Mercurial > repos > shellac > guppy_basecaller
comparison env/lib/python3.7/site-packages/cwltool/jshint/jshint.js @ 5:9b1c78e6ba9c draft default tip
"planemo upload commit 6c0a8142489327ece472c84e558c47da711a9142"
| author | shellac |
|---|---|
| date | Mon, 01 Jun 2020 08:59:25 -0400 |
| parents | 79f47841a781 |
| children |
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| 4:79f47841a781 | 5:9b1c78e6ba9c |
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| 1 /* | |
| 2 Copyright 2012 Anton Kovalyov (http://jshint.com) | |
| 3 | |
| 4 Permission is hereby granted, free of charge, to any person obtaining | |
| 5 a copy of this software and associated documentation files (the | |
| 6 "Software"), to deal in the Software without restriction, including | |
| 7 without limitation the rights to use, copy, modify, merge, publish, | |
| 8 distribute, sublicense, and/or sell copies of the Software, and to | |
| 9 permit persons to whom the Software is furnished to do so, subject to | |
| 10 the following conditions: | |
| 11 | |
| 12 The above copyright notice and this permission notice shall be | |
| 13 included in all copies or substantial portions of the Software. | |
| 14 | |
| 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| 16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
| 18 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | |
| 19 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
| 20 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| 21 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 22 */ | |
| 23 /*! 2.9.5 */ | |
| 24 var JSHINT; | |
| 25 if (typeof window === 'undefined') window = {}; | |
| 26 (function () { | |
| 27 var require; | |
| 28 require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ | |
| 29 var identifierStartTable = []; | |
| 30 | |
| 31 for (var i = 0; i < 128; i++) { | |
| 32 identifierStartTable[i] = | |
| 33 i === 36 || // $ | |
| 34 i >= 65 && i <= 90 || // A-Z | |
| 35 i === 95 || // _ | |
| 36 i >= 97 && i <= 122; // a-z | |
| 37 } | |
| 38 | |
| 39 var identifierPartTable = []; | |
| 40 | |
| 41 for (var i = 0; i < 128; i++) { | |
| 42 identifierPartTable[i] = | |
| 43 identifierStartTable[i] || // $, _, A-Z, a-z | |
| 44 i >= 48 && i <= 57; // 0-9 | |
| 45 } | |
| 46 | |
| 47 module.exports = { | |
| 48 asciiIdentifierStartTable: identifierStartTable, | |
| 49 asciiIdentifierPartTable: identifierPartTable | |
| 50 }; | |
| 51 | |
| 52 },{}],2:[function(require,module,exports){ | |
| 53 var str = 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| |
| 54 var arr = str.split(',').map(function(code) { | |
| 55 return parseInt(code, 10); | |
| 56 }); | |
| 57 module.exports = arr; | |
| 58 },{}],3:[function(require,module,exports){ | |
| 59 var str = 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| |
| 60 var arr = str.split(',').map(function(code) { | |
| 61 return parseInt(code, 10); | |
| 62 }); | |
| 63 module.exports = arr; | |
| 64 },{}],4:[function(require,module,exports){ | |
| 65 // http://wiki.commonjs.org/wiki/Unit_Testing/1.0 | |
| 66 // | |
| 67 // THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8! | |
| 68 // | |
| 69 // Originally from narwhal.js (http://narwhaljs.org) | |
| 70 // Copyright (c) 2009 Thomas Robinson <280north.com> | |
| 71 // | |
| 72 // Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 73 // of this software and associated documentation files (the 'Software'), to | |
| 74 // deal in the Software without restriction, including without limitation the | |
| 75 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
| 76 // sell copies of the Software, and to permit persons to whom the Software is | |
| 77 // furnished to do so, subject to the following conditions: | |
| 78 // | |
| 79 // The above copyright notice and this permission notice shall be included in | |
| 80 // all copies or substantial portions of the Software. | |
| 81 // | |
| 82 // THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 83 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 84 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 85 // AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
| 86 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| 87 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 88 | |
| 89 // when used in node, this will actually load the util module we depend on | |
| 90 // versus loading the builtin util module as happens otherwise | |
| 91 // this is a bug in node module loading as far as I am concerned | |
| 92 var util = require('util/'); | |
| 93 | |
| 94 var pSlice = Array.prototype.slice; | |
| 95 var hasOwn = Object.prototype.hasOwnProperty; | |
| 96 | |
| 97 // 1. The assert module provides functions that throw | |
| 98 // AssertionError's when particular conditions are not met. The | |
| 99 // assert module must conform to the following interface. | |
| 100 | |
| 101 var assert = module.exports = ok; | |
| 102 | |
| 103 // 2. The AssertionError is defined in assert. | |
| 104 // new assert.AssertionError({ message: message, | |
| 105 // actual: actual, | |
| 106 // expected: expected }) | |
| 107 | |
| 108 assert.AssertionError = function AssertionError(options) { | |
| 109 this.name = 'AssertionError'; | |
| 110 this.actual = options.actual; | |
| 111 this.expected = options.expected; | |
| 112 this.operator = options.operator; | |
| 113 if (options.message) { | |
| 114 this.message = options.message; | |
| 115 this.generatedMessage = false; | |
| 116 } else { | |
| 117 this.message = getMessage(this); | |
| 118 this.generatedMessage = true; | |
| 119 } | |
| 120 var stackStartFunction = options.stackStartFunction || fail; | |
| 121 | |
| 122 if (Error.captureStackTrace) { | |
| 123 Error.captureStackTrace(this, stackStartFunction); | |
| 124 } | |
| 125 else { | |
| 126 // non v8 browsers so we can have a stacktrace | |
| 127 var err = new Error(); | |
| 128 if (err.stack) { | |
| 129 var out = err.stack; | |
| 130 | |
| 131 // try to strip useless frames | |
| 132 var fn_name = stackStartFunction.name; | |
| 133 var idx = out.indexOf('\n' + fn_name); | |
| 134 if (idx >= 0) { | |
| 135 // once we have located the function frame | |
| 136 // we need to strip out everything before it (and its line) | |
| 137 var next_line = out.indexOf('\n', idx + 1); | |
| 138 out = out.substring(next_line + 1); | |
| 139 } | |
| 140 | |
| 141 this.stack = out; | |
| 142 } | |
| 143 } | |
| 144 }; | |
| 145 | |
| 146 // assert.AssertionError instanceof Error | |
| 147 util.inherits(assert.AssertionError, Error); | |
| 148 | |
| 149 function replacer(key, value) { | |
| 150 if (util.isUndefined(value)) { | |
| 151 return '' + value; | |
| 152 } | |
| 153 if (util.isNumber(value) && !isFinite(value)) { | |
| 154 return value.toString(); | |
| 155 } | |
| 156 if (util.isFunction(value) || util.isRegExp(value)) { | |
| 157 return value.toString(); | |
| 158 } | |
| 159 return value; | |
| 160 } | |
| 161 | |
| 162 function truncate(s, n) { | |
| 163 if (util.isString(s)) { | |
| 164 return s.length < n ? s : s.slice(0, n); | |
| 165 } else { | |
| 166 return s; | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 function getMessage(self) { | |
| 171 return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' + | |
| 172 self.operator + ' ' + | |
| 173 truncate(JSON.stringify(self.expected, replacer), 128); | |
| 174 } | |
| 175 | |
| 176 // At present only the three keys mentioned above are used and | |
| 177 // understood by the spec. Implementations or sub modules can pass | |
| 178 // other keys to the AssertionError's constructor - they will be | |
| 179 // ignored. | |
| 180 | |
| 181 // 3. All of the following functions must throw an AssertionError | |
| 182 // when a corresponding condition is not met, with a message that | |
| 183 // may be undefined if not provided. All assertion methods provide | |
| 184 // both the actual and expected values to the assertion error for | |
| 185 // display purposes. | |
| 186 | |
| 187 function fail(actual, expected, message, operator, stackStartFunction) { | |
| 188 throw new assert.AssertionError({ | |
| 189 message: message, | |
| 190 actual: actual, | |
| 191 expected: expected, | |
| 192 operator: operator, | |
| 193 stackStartFunction: stackStartFunction | |
| 194 }); | |
| 195 } | |
| 196 | |
| 197 // EXTENSION! allows for well behaved errors defined elsewhere. | |
| 198 assert.fail = fail; | |
| 199 | |
| 200 // 4. Pure assertion tests whether a value is truthy, as determined | |
| 201 // by !!guard. | |
| 202 // assert.ok(guard, message_opt); | |
| 203 // This statement is equivalent to assert.equal(true, !!guard, | |
| 204 // message_opt);. To test strictly for the value true, use | |
| 205 // assert.strictEqual(true, guard, message_opt);. | |
| 206 | |
| 207 function ok(value, message) { | |
| 208 if (!value) fail(value, true, message, '==', assert.ok); | |
| 209 } | |
| 210 assert.ok = ok; | |
| 211 | |
| 212 // 5. The equality assertion tests shallow, coercive equality with | |
| 213 // ==. | |
| 214 // assert.equal(actual, expected, message_opt); | |
| 215 | |
| 216 assert.equal = function equal(actual, expected, message) { | |
| 217 if (actual != expected) fail(actual, expected, message, '==', assert.equal); | |
| 218 }; | |
| 219 | |
| 220 // 6. The non-equality assertion tests for whether two objects are not equal | |
| 221 // with != assert.notEqual(actual, expected, message_opt); | |
| 222 | |
| 223 assert.notEqual = function notEqual(actual, expected, message) { | |
| 224 if (actual == expected) { | |
| 225 fail(actual, expected, message, '!=', assert.notEqual); | |
| 226 } | |
| 227 }; | |
| 228 | |
| 229 // 7. The equivalence assertion tests a deep equality relation. | |
| 230 // assert.deepEqual(actual, expected, message_opt); | |
| 231 | |
| 232 assert.deepEqual = function deepEqual(actual, expected, message) { | |
| 233 if (!_deepEqual(actual, expected)) { | |
| 234 fail(actual, expected, message, 'deepEqual', assert.deepEqual); | |
| 235 } | |
| 236 }; | |
| 237 | |
| 238 function _deepEqual(actual, expected) { | |
| 239 // 7.1. All identical values are equivalent, as determined by ===. | |
| 240 if (actual === expected) { | |
| 241 return true; | |
| 242 | |
| 243 } else if (util.isBuffer(actual) && util.isBuffer(expected)) { | |
| 244 if (actual.length != expected.length) return false; | |
| 245 | |
| 246 for (var i = 0; i < actual.length; i++) { | |
| 247 if (actual[i] !== expected[i]) return false; | |
| 248 } | |
| 249 | |
| 250 return true; | |
| 251 | |
| 252 // 7.2. If the expected value is a Date object, the actual value is | |
| 253 // equivalent if it is also a Date object that refers to the same time. | |
| 254 } else if (util.isDate(actual) && util.isDate(expected)) { | |
| 255 return actual.getTime() === expected.getTime(); | |
| 256 | |
| 257 // 7.3 If the expected value is a RegExp object, the actual value is | |
| 258 // equivalent if it is also a RegExp object with the same source and | |
| 259 // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`). | |
| 260 } else if (util.isRegExp(actual) && util.isRegExp(expected)) { | |
| 261 return actual.source === expected.source && | |
| 262 actual.global === expected.global && | |
| 263 actual.multiline === expected.multiline && | |
| 264 actual.lastIndex === expected.lastIndex && | |
| 265 actual.ignoreCase === expected.ignoreCase; | |
| 266 | |
| 267 // 7.4. Other pairs that do not both pass typeof value == 'object', | |
| 268 // equivalence is determined by ==. | |
| 269 } else if (!util.isObject(actual) && !util.isObject(expected)) { | |
| 270 return actual == expected; | |
| 271 | |
| 272 // 7.5 For all other Object pairs, including Array objects, equivalence is | |
| 273 // determined by having the same number of owned properties (as verified | |
| 274 // with Object.prototype.hasOwnProperty.call), the same set of keys | |
| 275 // (although not necessarily the same order), equivalent values for every | |
| 276 // corresponding key, and an identical 'prototype' property. Note: this | |
| 277 // accounts for both named and indexed properties on Arrays. | |
| 278 } else { | |
| 279 return objEquiv(actual, expected); | |
| 280 } | |
| 281 } | |
| 282 | |
| 283 function isArguments(object) { | |
| 284 return Object.prototype.toString.call(object) == '[object Arguments]'; | |
| 285 } | |
| 286 | |
| 287 function objEquiv(a, b) { | |
| 288 if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b)) | |
| 289 return false; | |
| 290 // an identical 'prototype' property. | |
| 291 if (a.prototype !== b.prototype) return false; | |
| 292 // if one is a primitive, the other must be same | |
| 293 if (util.isPrimitive(a) || util.isPrimitive(b)) { | |
| 294 return a === b; | |
| 295 } | |
| 296 var aIsArgs = isArguments(a), | |
| 297 bIsArgs = isArguments(b); | |
| 298 if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs)) | |
| 299 return false; | |
| 300 if (aIsArgs) { | |
| 301 a = pSlice.call(a); | |
| 302 b = pSlice.call(b); | |
| 303 return _deepEqual(a, b); | |
| 304 } | |
| 305 var ka = objectKeys(a), | |
| 306 kb = objectKeys(b), | |
| 307 key, i; | |
| 308 // having the same number of owned properties (keys incorporates | |
| 309 // hasOwnProperty) | |
| 310 if (ka.length != kb.length) | |
| 311 return false; | |
| 312 //the same set of keys (although not necessarily the same order), | |
| 313 ka.sort(); | |
| 314 kb.sort(); | |
| 315 //~~~cheap key test | |
| 316 for (i = ka.length - 1; i >= 0; i--) { | |
| 317 if (ka[i] != kb[i]) | |
| 318 return false; | |
| 319 } | |
| 320 //equivalent values for every corresponding key, and | |
| 321 //~~~possibly expensive deep test | |
| 322 for (i = ka.length - 1; i >= 0; i--) { | |
| 323 key = ka[i]; | |
| 324 if (!_deepEqual(a[key], b[key])) return false; | |
| 325 } | |
| 326 return true; | |
| 327 } | |
| 328 | |
| 329 // 8. The non-equivalence assertion tests for any deep inequality. | |
| 330 // assert.notDeepEqual(actual, expected, message_opt); | |
| 331 | |
| 332 assert.notDeepEqual = function notDeepEqual(actual, expected, message) { | |
| 333 if (_deepEqual(actual, expected)) { | |
| 334 fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); | |
| 335 } | |
| 336 }; | |
| 337 | |
| 338 // 9. The strict equality assertion tests strict equality, as determined by ===. | |
| 339 // assert.strictEqual(actual, expected, message_opt); | |
| 340 | |
| 341 assert.strictEqual = function strictEqual(actual, expected, message) { | |
| 342 if (actual !== expected) { | |
| 343 fail(actual, expected, message, '===', assert.strictEqual); | |
| 344 } | |
| 345 }; | |
| 346 | |
| 347 // 10. The strict non-equality assertion tests for strict inequality, as | |
| 348 // determined by !==. assert.notStrictEqual(actual, expected, message_opt); | |
| 349 | |
| 350 assert.notStrictEqual = function notStrictEqual(actual, expected, message) { | |
| 351 if (actual === expected) { | |
| 352 fail(actual, expected, message, '!==', assert.notStrictEqual); | |
| 353 } | |
| 354 }; | |
| 355 | |
| 356 function expectedException(actual, expected) { | |
| 357 if (!actual || !expected) { | |
| 358 return false; | |
| 359 } | |
| 360 | |
| 361 if (Object.prototype.toString.call(expected) == '[object RegExp]') { | |
| 362 return expected.test(actual); | |
| 363 } else if (actual instanceof expected) { | |
| 364 return true; | |
| 365 } else if (expected.call({}, actual) === true) { | |
| 366 return true; | |
| 367 } | |
| 368 | |
| 369 return false; | |
| 370 } | |
| 371 | |
| 372 function _throws(shouldThrow, block, expected, message) { | |
| 373 var actual; | |
| 374 | |
| 375 if (util.isString(expected)) { | |
| 376 message = expected; | |
| 377 expected = null; | |
| 378 } | |
| 379 | |
| 380 try { | |
| 381 block(); | |
| 382 } catch (e) { | |
| 383 actual = e; | |
| 384 } | |
| 385 | |
| 386 message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + | |
| 387 (message ? ' ' + message : '.'); | |
| 388 | |
| 389 if (shouldThrow && !actual) { | |
| 390 fail(actual, expected, 'Missing expected exception' + message); | |
| 391 } | |
| 392 | |
| 393 if (!shouldThrow && expectedException(actual, expected)) { | |
| 394 fail(actual, expected, 'Got unwanted exception' + message); | |
| 395 } | |
| 396 | |
| 397 if ((shouldThrow && actual && expected && | |
| 398 !expectedException(actual, expected)) || (!shouldThrow && actual)) { | |
| 399 throw actual; | |
| 400 } | |
| 401 } | |
| 402 | |
| 403 // 11. Expected to throw an error: | |
| 404 // assert.throws(block, Error_opt, message_opt); | |
| 405 | |
| 406 assert.throws = function(block, /*optional*/error, /*optional*/message) { | |
| 407 _throws.apply(this, [true].concat(pSlice.call(arguments))); | |
| 408 }; | |
| 409 | |
| 410 // EXTENSION! This is annoying to write outside this module. | |
| 411 assert.doesNotThrow = function(block, /*optional*/message) { | |
| 412 _throws.apply(this, [false].concat(pSlice.call(arguments))); | |
| 413 }; | |
| 414 | |
| 415 assert.ifError = function(err) { if (err) {throw err;}}; | |
| 416 | |
| 417 var objectKeys = Object.keys || function (obj) { | |
| 418 var keys = []; | |
| 419 for (var key in obj) { | |
| 420 if (hasOwn.call(obj, key)) keys.push(key); | |
| 421 } | |
| 422 return keys; | |
| 423 }; | |
| 424 | |
| 425 },{"util/":9}],5:[function(require,module,exports){ | |
| 426 // Copyright Joyent, Inc. and other Node contributors. | |
| 427 // | |
| 428 // Permission is hereby granted, free of charge, to any person obtaining a | |
| 429 // copy of this software and associated documentation files (the | |
| 430 // "Software"), to deal in the Software without restriction, including | |
| 431 // without limitation the rights to use, copy, modify, merge, publish, | |
| 432 // distribute, sublicense, and/or sell copies of the Software, and to permit | |
| 433 // persons to whom the Software is furnished to do so, subject to the | |
| 434 // following conditions: | |
| 435 // | |
| 436 // The above copyright notice and this permission notice shall be included | |
| 437 // in all copies or substantial portions of the Software. | |
| 438 // | |
| 439 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
| 440 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 441 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
| 442 // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
| 443 // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
| 444 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
| 445 // USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 446 | |
| 447 function EventEmitter() { | |
| 448 this._events = this._events || {}; | |
| 449 this._maxListeners = this._maxListeners || undefined; | |
| 450 } | |
| 451 module.exports = EventEmitter; | |
| 452 | |
| 453 // Backwards-compat with node 0.10.x | |
| 454 EventEmitter.EventEmitter = EventEmitter; | |
| 455 | |
| 456 EventEmitter.prototype._events = undefined; | |
| 457 EventEmitter.prototype._maxListeners = undefined; | |
| 458 | |
| 459 // By default EventEmitters will print a warning if more than 10 listeners are | |
| 460 // added to it. This is a useful default which helps finding memory leaks. | |
| 461 EventEmitter.defaultMaxListeners = 10; | |
| 462 | |
| 463 // Obviously not all Emitters should be limited to 10. This function allows | |
| 464 // that to be increased. Set to zero for unlimited. | |
| 465 EventEmitter.prototype.setMaxListeners = function(n) { | |
| 466 if (!isNumber(n) || n < 0 || isNaN(n)) | |
| 467 throw TypeError('n must be a positive number'); | |
| 468 this._maxListeners = n; | |
| 469 return this; | |
| 470 }; | |
| 471 | |
| 472 EventEmitter.prototype.emit = function(type) { | |
| 473 var er, handler, len, args, i, listeners; | |
| 474 | |
| 475 if (!this._events) | |
| 476 this._events = {}; | |
| 477 | |
| 478 // If there is no 'error' event listener then throw. | |
| 479 if (type === 'error') { | |
| 480 if (!this._events.error || | |
| 481 (isObject(this._events.error) && !this._events.error.length)) { | |
| 482 er = arguments[1]; | |
| 483 if (er instanceof Error) { | |
| 484 throw er; // Unhandled 'error' event | |
| 485 } | |
| 486 throw TypeError('Uncaught, unspecified "error" event.'); | |
| 487 } | |
| 488 } | |
| 489 | |
| 490 handler = this._events[type]; | |
| 491 | |
| 492 if (isUndefined(handler)) | |
| 493 return false; | |
| 494 | |
| 495 if (isFunction(handler)) { | |
| 496 switch (arguments.length) { | |
| 497 // fast cases | |
| 498 case 1: | |
| 499 handler.call(this); | |
| 500 break; | |
| 501 case 2: | |
| 502 handler.call(this, arguments[1]); | |
| 503 break; | |
| 504 case 3: | |
| 505 handler.call(this, arguments[1], arguments[2]); | |
| 506 break; | |
| 507 // slower | |
| 508 default: | |
| 509 len = arguments.length; | |
| 510 args = new Array(len - 1); | |
| 511 for (i = 1; i < len; i++) | |
| 512 args[i - 1] = arguments[i]; | |
| 513 handler.apply(this, args); | |
| 514 } | |
| 515 } else if (isObject(handler)) { | |
| 516 len = arguments.length; | |
| 517 args = new Array(len - 1); | |
| 518 for (i = 1; i < len; i++) | |
| 519 args[i - 1] = arguments[i]; | |
| 520 | |
| 521 listeners = handler.slice(); | |
| 522 len = listeners.length; | |
| 523 for (i = 0; i < len; i++) | |
| 524 listeners[i].apply(this, args); | |
| 525 } | |
| 526 | |
| 527 return true; | |
| 528 }; | |
| 529 | |
| 530 EventEmitter.prototype.addListener = function(type, listener) { | |
| 531 var m; | |
| 532 | |
| 533 if (!isFunction(listener)) | |
| 534 throw TypeError('listener must be a function'); | |
| 535 | |
| 536 if (!this._events) | |
| 537 this._events = {}; | |
| 538 | |
| 539 // To avoid recursion in the case that type === "newListener"! Before | |
| 540 // adding it to the listeners, first emit "newListener". | |
| 541 if (this._events.newListener) | |
| 542 this.emit('newListener', type, | |
| 543 isFunction(listener.listener) ? | |
| 544 listener.listener : listener); | |
| 545 | |
| 546 if (!this._events[type]) | |
| 547 // Optimize the case of one listener. Don't need the extra array object. | |
| 548 this._events[type] = listener; | |
| 549 else if (isObject(this._events[type])) | |
| 550 // If we've already got an array, just append. | |
| 551 this._events[type].push(listener); | |
| 552 else | |
| 553 // Adding the second element, need to change to array. | |
| 554 this._events[type] = [this._events[type], listener]; | |
| 555 | |
| 556 // Check for listener leak | |
| 557 if (isObject(this._events[type]) && !this._events[type].warned) { | |
| 558 var m; | |
| 559 if (!isUndefined(this._maxListeners)) { | |
| 560 m = this._maxListeners; | |
| 561 } else { | |
| 562 m = EventEmitter.defaultMaxListeners; | |
| 563 } | |
| 564 | |
| 565 if (m && m > 0 && this._events[type].length > m) { | |
| 566 this._events[type].warned = true; | |
| 567 console.error('(node) warning: possible EventEmitter memory ' + | |
| 568 'leak detected. %d listeners added. ' + | |
| 569 'Use emitter.setMaxListeners() to increase limit.', | |
| 570 this._events[type].length); | |
| 571 if (typeof console.trace === 'function') { | |
| 572 // not supported in IE 10 | |
| 573 console.trace(); | |
| 574 } | |
| 575 } | |
| 576 } | |
| 577 | |
| 578 return this; | |
| 579 }; | |
| 580 | |
| 581 EventEmitter.prototype.on = EventEmitter.prototype.addListener; | |
| 582 | |
| 583 EventEmitter.prototype.once = function(type, listener) { | |
| 584 if (!isFunction(listener)) | |
| 585 throw TypeError('listener must be a function'); | |
| 586 | |
| 587 var fired = false; | |
| 588 | |
| 589 function g() { | |
| 590 this.removeListener(type, g); | |
| 591 | |
| 592 if (!fired) { | |
| 593 fired = true; | |
| 594 listener.apply(this, arguments); | |
| 595 } | |
| 596 } | |
| 597 | |
| 598 g.listener = listener; | |
| 599 this.on(type, g); | |
| 600 | |
| 601 return this; | |
| 602 }; | |
| 603 | |
| 604 // emits a 'removeListener' event iff the listener was removed | |
| 605 EventEmitter.prototype.removeListener = function(type, listener) { | |
| 606 var list, position, length, i; | |
| 607 | |
| 608 if (!isFunction(listener)) | |
| 609 throw TypeError('listener must be a function'); | |
| 610 | |
| 611 if (!this._events || !this._events[type]) | |
| 612 return this; | |
| 613 | |
| 614 list = this._events[type]; | |
| 615 length = list.length; | |
| 616 position = -1; | |
| 617 | |
| 618 if (list === listener || | |
| 619 (isFunction(list.listener) && list.listener === listener)) { | |
| 620 delete this._events[type]; | |
| 621 if (this._events.removeListener) | |
| 622 this.emit('removeListener', type, listener); | |
| 623 | |
| 624 } else if (isObject(list)) { | |
| 625 for (i = length; i-- > 0;) { | |
| 626 if (list[i] === listener || | |
| 627 (list[i].listener && list[i].listener === listener)) { | |
| 628 position = i; | |
| 629 break; | |
| 630 } | |
| 631 } | |
| 632 | |
| 633 if (position < 0) | |
| 634 return this; | |
| 635 | |
| 636 if (list.length === 1) { | |
| 637 list.length = 0; | |
| 638 delete this._events[type]; | |
| 639 } else { | |
| 640 list.splice(position, 1); | |
| 641 } | |
| 642 | |
| 643 if (this._events.removeListener) | |
| 644 this.emit('removeListener', type, listener); | |
| 645 } | |
| 646 | |
| 647 return this; | |
| 648 }; | |
| 649 | |
| 650 EventEmitter.prototype.removeAllListeners = function(type) { | |
| 651 var key, listeners; | |
| 652 | |
| 653 if (!this._events) | |
| 654 return this; | |
| 655 | |
| 656 // not listening for removeListener, no need to emit | |
| 657 if (!this._events.removeListener) { | |
| 658 if (arguments.length === 0) | |
| 659 this._events = {}; | |
| 660 else if (this._events[type]) | |
| 661 delete this._events[type]; | |
| 662 return this; | |
| 663 } | |
| 664 | |
| 665 // emit removeListener for all listeners on all events | |
| 666 if (arguments.length === 0) { | |
| 667 for (key in this._events) { | |
| 668 if (key === 'removeListener') continue; | |
| 669 this.removeAllListeners(key); | |
| 670 } | |
| 671 this.removeAllListeners('removeListener'); | |
| 672 this._events = {}; | |
| 673 return this; | |
| 674 } | |
| 675 | |
| 676 listeners = this._events[type]; | |
| 677 | |
| 678 if (isFunction(listeners)) { | |
| 679 this.removeListener(type, listeners); | |
| 680 } else { | |
| 681 // LIFO order | |
| 682 while (listeners.length) | |
| 683 this.removeListener(type, listeners[listeners.length - 1]); | |
| 684 } | |
| 685 delete this._events[type]; | |
| 686 | |
| 687 return this; | |
| 688 }; | |
| 689 | |
| 690 EventEmitter.prototype.listeners = function(type) { | |
| 691 var ret; | |
| 692 if (!this._events || !this._events[type]) | |
| 693 ret = []; | |
| 694 else if (isFunction(this._events[type])) | |
| 695 ret = [this._events[type]]; | |
| 696 else | |
| 697 ret = this._events[type].slice(); | |
| 698 return ret; | |
| 699 }; | |
| 700 | |
| 701 EventEmitter.listenerCount = function(emitter, type) { | |
| 702 var ret; | |
| 703 if (!emitter._events || !emitter._events[type]) | |
| 704 ret = 0; | |
| 705 else if (isFunction(emitter._events[type])) | |
| 706 ret = 1; | |
| 707 else | |
| 708 ret = emitter._events[type].length; | |
| 709 return ret; | |
| 710 }; | |
| 711 | |
| 712 function isFunction(arg) { | |
| 713 return typeof arg === 'function'; | |
| 714 } | |
| 715 | |
| 716 function isNumber(arg) { | |
| 717 return typeof arg === 'number'; | |
| 718 } | |
| 719 | |
| 720 function isObject(arg) { | |
| 721 return typeof arg === 'object' && arg !== null; | |
| 722 } | |
| 723 | |
| 724 function isUndefined(arg) { | |
| 725 return arg === void 0; | |
| 726 } | |
| 727 | |
| 728 },{}],6:[function(require,module,exports){ | |
| 729 // shim for using process in browser | |
| 730 | |
| 731 var process = module.exports = {}; | |
| 732 var queue = []; | |
| 733 var draining = false; | |
| 734 | |
| 735 function drainQueue() { | |
| 736 if (draining) { | |
| 737 return; | |
| 738 } | |
| 739 draining = true; | |
| 740 var currentQueue; | |
| 741 var len = queue.length; | |
| 742 while(len) { | |
| 743 currentQueue = queue; | |
| 744 queue = []; | |
| 745 var i = -1; | |
| 746 while (++i < len) { | |
| 747 currentQueue[i](); | |
| 748 } | |
| 749 len = queue.length; | |
| 750 } | |
| 751 draining = false; | |
| 752 } | |
| 753 process.nextTick = function (fun) { | |
| 754 queue.push(fun); | |
| 755 if (!draining) { | |
| 756 setTimeout(drainQueue, 0); | |
| 757 } | |
| 758 }; | |
| 759 | |
| 760 process.title = 'browser'; | |
| 761 process.browser = true; | |
| 762 process.env = {}; | |
| 763 process.argv = []; | |
| 764 process.version = ''; // empty string to avoid regexp issues | |
| 765 process.versions = {}; | |
| 766 | |
| 767 function noop() {} | |
| 768 | |
| 769 process.on = noop; | |
| 770 process.addListener = noop; | |
| 771 process.once = noop; | |
| 772 process.off = noop; | |
| 773 process.removeListener = noop; | |
| 774 process.removeAllListeners = noop; | |
| 775 process.emit = noop; | |
| 776 | |
| 777 process.binding = function (name) { | |
| 778 throw new Error('process.binding is not supported'); | |
| 779 }; | |
| 780 | |
| 781 // TODO(shtylman) | |
| 782 process.cwd = function () { return '/' }; | |
| 783 process.chdir = function (dir) { | |
| 784 throw new Error('process.chdir is not supported'); | |
| 785 }; | |
| 786 process.umask = function() { return 0; }; | |
| 787 | |
| 788 },{}],7:[function(require,module,exports){ | |
| 789 if (typeof Object.create === 'function') { | |
| 790 // implementation from standard node.js 'util' module | |
| 791 module.exports = function inherits(ctor, superCtor) { | |
| 792 ctor.super_ = superCtor | |
| 793 ctor.prototype = Object.create(superCtor.prototype, { | |
| 794 constructor: { | |
| 795 value: ctor, | |
| 796 enumerable: false, | |
| 797 writable: true, | |
| 798 configurable: true | |
| 799 } | |
| 800 }); | |
| 801 }; | |
| 802 } else { | |
| 803 // old school shim for old browsers | |
| 804 module.exports = function inherits(ctor, superCtor) { | |
| 805 ctor.super_ = superCtor | |
| 806 var TempCtor = function () {} | |
| 807 TempCtor.prototype = superCtor.prototype | |
| 808 ctor.prototype = new TempCtor() | |
| 809 ctor.prototype.constructor = ctor | |
| 810 } | |
| 811 } | |
| 812 | |
| 813 },{}],8:[function(require,module,exports){ | |
| 814 module.exports = function isBuffer(arg) { | |
| 815 return arg && typeof arg === 'object' | |
| 816 && typeof arg.copy === 'function' | |
| 817 && typeof arg.fill === 'function' | |
| 818 && typeof arg.readUInt8 === 'function'; | |
| 819 } | |
| 820 },{}],9:[function(require,module,exports){ | |
| 821 (function (process,global){ | |
| 822 // Copyright Joyent, Inc. and other Node contributors. | |
| 823 // | |
| 824 // Permission is hereby granted, free of charge, to any person obtaining a | |
| 825 // copy of this software and associated documentation files (the | |
| 826 // "Software"), to deal in the Software without restriction, including | |
| 827 // without limitation the rights to use, copy, modify, merge, publish, | |
| 828 // distribute, sublicense, and/or sell copies of the Software, and to permit | |
| 829 // persons to whom the Software is furnished to do so, subject to the | |
| 830 // following conditions: | |
| 831 // | |
| 832 // The above copyright notice and this permission notice shall be included | |
| 833 // in all copies or substantial portions of the Software. | |
| 834 // | |
| 835 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
| 836 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 837 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
| 838 // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
| 839 // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
| 840 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
| 841 // USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 842 | |
| 843 var formatRegExp = /%[sdj%]/g; | |
| 844 exports.format = function(f) { | |
| 845 if (!isString(f)) { | |
| 846 var objects = []; | |
| 847 for (var i = 0; i < arguments.length; i++) { | |
| 848 objects.push(inspect(arguments[i])); | |
| 849 } | |
| 850 return objects.join(' '); | |
| 851 } | |
| 852 | |
| 853 var i = 1; | |
| 854 var args = arguments; | |
| 855 var len = args.length; | |
| 856 var str = String(f).replace(formatRegExp, function(x) { | |
| 857 if (x === '%%') return '%'; | |
| 858 if (i >= len) return x; | |
| 859 switch (x) { | |
| 860 case '%s': return String(args[i++]); | |
| 861 case '%d': return Number(args[i++]); | |
| 862 case '%j': | |
| 863 try { | |
| 864 return JSON.stringify(args[i++]); | |
| 865 } catch (_) { | |
| 866 return '[Circular]'; | |
| 867 } | |
| 868 default: | |
| 869 return x; | |
| 870 } | |
| 871 }); | |
| 872 for (var x = args[i]; i < len; x = args[++i]) { | |
| 873 if (isNull(x) || !isObject(x)) { | |
| 874 str += ' ' + x; | |
| 875 } else { | |
| 876 str += ' ' + inspect(x); | |
| 877 } | |
| 878 } | |
| 879 return str; | |
| 880 }; | |
| 881 | |
| 882 | |
| 883 // Mark that a method should not be used. | |
| 884 // Returns a modified function which warns once by default. | |
| 885 // If --no-deprecation is set, then it is a no-op. | |
| 886 exports.deprecate = function(fn, msg) { | |
| 887 // Allow for deprecating things in the process of starting up. | |
| 888 if (isUndefined(global.process)) { | |
| 889 return function() { | |
| 890 return exports.deprecate(fn, msg).apply(this, arguments); | |
| 891 }; | |
| 892 } | |
| 893 | |
| 894 if (process.noDeprecation === true) { | |
| 895 return fn; | |
| 896 } | |
| 897 | |
| 898 var warned = false; | |
| 899 function deprecated() { | |
| 900 if (!warned) { | |
| 901 if (process.throwDeprecation) { | |
| 902 throw new Error(msg); | |
| 903 } else if (process.traceDeprecation) { | |
| 904 console.trace(msg); | |
| 905 } else { | |
| 906 console.error(msg); | |
| 907 } | |
| 908 warned = true; | |
| 909 } | |
| 910 return fn.apply(this, arguments); | |
| 911 } | |
| 912 | |
| 913 return deprecated; | |
| 914 }; | |
| 915 | |
| 916 | |
| 917 var debugs = {}; | |
| 918 var debugEnviron; | |
| 919 exports.debuglog = function(set) { | |
| 920 if (isUndefined(debugEnviron)) | |
| 921 debugEnviron = process.env.NODE_DEBUG || ''; | |
| 922 set = set.toUpperCase(); | |
| 923 if (!debugs[set]) { | |
| 924 if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { | |
| 925 var pid = process.pid; | |
| 926 debugs[set] = function() { | |
| 927 var msg = exports.format.apply(exports, arguments); | |
| 928 console.error('%s %d: %s', set, pid, msg); | |
| 929 }; | |
| 930 } else { | |
| 931 debugs[set] = function() {}; | |
| 932 } | |
| 933 } | |
| 934 return debugs[set]; | |
| 935 }; | |
| 936 | |
| 937 | |
| 938 /** | |
| 939 * Echos the value of a value. Trys to print the value out | |
| 940 * in the best way possible given the different types. | |
| 941 * | |
| 942 * @param {Object} obj The object to print out. | |
| 943 * @param {Object} opts Optional options object that alters the output. | |
| 944 */ | |
| 945 /* legacy: obj, showHidden, depth, colors*/ | |
| 946 function inspect(obj, opts) { | |
| 947 // default options | |
| 948 var ctx = { | |
| 949 seen: [], | |
| 950 stylize: stylizeNoColor | |
| 951 }; | |
| 952 // legacy... | |
| 953 if (arguments.length >= 3) ctx.depth = arguments[2]; | |
| 954 if (arguments.length >= 4) ctx.colors = arguments[3]; | |
| 955 if (isBoolean(opts)) { | |
| 956 // legacy... | |
| 957 ctx.showHidden = opts; | |
| 958 } else if (opts) { | |
| 959 // got an "options" object | |
| 960 exports._extend(ctx, opts); | |
| 961 } | |
| 962 // set default options | |
| 963 if (isUndefined(ctx.showHidden)) ctx.showHidden = false; | |
| 964 if (isUndefined(ctx.depth)) ctx.depth = 2; | |
| 965 if (isUndefined(ctx.colors)) ctx.colors = false; | |
| 966 if (isUndefined(ctx.customInspect)) ctx.customInspect = true; | |
| 967 if (ctx.colors) ctx.stylize = stylizeWithColor; | |
| 968 return formatValue(ctx, obj, ctx.depth); | |
| 969 } | |
| 970 exports.inspect = inspect; | |
| 971 | |
| 972 | |
| 973 // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics | |
| 974 inspect.colors = { | |
| 975 'bold' : [1, 22], | |
| 976 'italic' : [3, 23], | |
| 977 'underline' : [4, 24], | |
| 978 'inverse' : [7, 27], | |
| 979 'white' : [37, 39], | |
| 980 'grey' : [90, 39], | |
| 981 'black' : [30, 39], | |
| 982 'blue' : [34, 39], | |
| 983 'cyan' : [36, 39], | |
| 984 'green' : [32, 39], | |
| 985 'magenta' : [35, 39], | |
| 986 'red' : [31, 39], | |
| 987 'yellow' : [33, 39] | |
| 988 }; | |
| 989 | |
| 990 // Don't use 'blue' not visible on cmd.exe | |
| 991 inspect.styles = { | |
| 992 'special': 'cyan', | |
| 993 'number': 'yellow', | |
| 994 'boolean': 'yellow', | |
| 995 'undefined': 'grey', | |
| 996 'null': 'bold', | |
| 997 'string': 'green', | |
| 998 'date': 'magenta', | |
| 999 // "name": intentionally not styling | |
| 1000 'regexp': 'red' | |
| 1001 }; | |
| 1002 | |
| 1003 | |
| 1004 function stylizeWithColor(str, styleType) { | |
| 1005 var style = inspect.styles[styleType]; | |
| 1006 | |
| 1007 if (style) { | |
| 1008 return '\u001b[' + inspect.colors[style][0] + 'm' + str + | |
| 1009 '\u001b[' + inspect.colors[style][1] + 'm'; | |
| 1010 } else { | |
| 1011 return str; | |
| 1012 } | |
| 1013 } | |
| 1014 | |
| 1015 | |
| 1016 function stylizeNoColor(str, styleType) { | |
| 1017 return str; | |
| 1018 } | |
| 1019 | |
| 1020 | |
| 1021 function arrayToHash(array) { | |
| 1022 var hash = {}; | |
| 1023 | |
| 1024 array.forEach(function(val, idx) { | |
| 1025 hash[val] = true; | |
| 1026 }); | |
| 1027 | |
| 1028 return hash; | |
| 1029 } | |
| 1030 | |
| 1031 | |
| 1032 function formatValue(ctx, value, recurseTimes) { | |
| 1033 // Provide a hook for user-specified inspect functions. | |
| 1034 // Check that value is an object with an inspect function on it | |
| 1035 if (ctx.customInspect && | |
| 1036 value && | |
| 1037 isFunction(value.inspect) && | |
| 1038 // Filter out the util module, it's inspect function is special | |
| 1039 value.inspect !== exports.inspect && | |
| 1040 // Also filter out any prototype objects using the circular check. | |
| 1041 !(value.constructor && value.constructor.prototype === value)) { | |
| 1042 var ret = value.inspect(recurseTimes, ctx); | |
| 1043 if (!isString(ret)) { | |
| 1044 ret = formatValue(ctx, ret, recurseTimes); | |
| 1045 } | |
| 1046 return ret; | |
| 1047 } | |
| 1048 | |
| 1049 // Primitive types cannot have properties | |
| 1050 var primitive = formatPrimitive(ctx, value); | |
| 1051 if (primitive) { | |
| 1052 return primitive; | |
| 1053 } | |
| 1054 | |
| 1055 // Look up the keys of the object. | |
| 1056 var keys = Object.keys(value); | |
| 1057 var visibleKeys = arrayToHash(keys); | |
| 1058 | |
| 1059 if (ctx.showHidden) { | |
| 1060 keys = Object.getOwnPropertyNames(value); | |
| 1061 } | |
| 1062 | |
| 1063 // IE doesn't make error fields non-enumerable | |
| 1064 // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx | |
| 1065 if (isError(value) | |
| 1066 && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { | |
| 1067 return formatError(value); | |
| 1068 } | |
| 1069 | |
| 1070 // Some type of object without properties can be shortcutted. | |
| 1071 if (keys.length === 0) { | |
| 1072 if (isFunction(value)) { | |
| 1073 var name = value.name ? ': ' + value.name : ''; | |
| 1074 return ctx.stylize('[Function' + name + ']', 'special'); | |
| 1075 } | |
| 1076 if (isRegExp(value)) { | |
| 1077 return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); | |
| 1078 } | |
| 1079 if (isDate(value)) { | |
| 1080 return ctx.stylize(Date.prototype.toString.call(value), 'date'); | |
| 1081 } | |
| 1082 if (isError(value)) { | |
| 1083 return formatError(value); | |
| 1084 } | |
| 1085 } | |
| 1086 | |
| 1087 var base = '', array = false, braces = ['{', '}']; | |
| 1088 | |
| 1089 // Make Array say that they are Array | |
| 1090 if (isArray(value)) { | |
| 1091 array = true; | |
| 1092 braces = ['[', ']']; | |
| 1093 } | |
| 1094 | |
| 1095 // Make functions say that they are functions | |
| 1096 if (isFunction(value)) { | |
| 1097 var n = value.name ? ': ' + value.name : ''; | |
| 1098 base = ' [Function' + n + ']'; | |
| 1099 } | |
| 1100 | |
| 1101 // Make RegExps say that they are RegExps | |
| 1102 if (isRegExp(value)) { | |
| 1103 base = ' ' + RegExp.prototype.toString.call(value); | |
| 1104 } | |
| 1105 | |
| 1106 // Make dates with properties first say the date | |
| 1107 if (isDate(value)) { | |
| 1108 base = ' ' + Date.prototype.toUTCString.call(value); | |
| 1109 } | |
| 1110 | |
| 1111 // Make error with message first say the error | |
| 1112 if (isError(value)) { | |
| 1113 base = ' ' + formatError(value); | |
| 1114 } | |
| 1115 | |
| 1116 if (keys.length === 0 && (!array || value.length == 0)) { | |
| 1117 return braces[0] + base + braces[1]; | |
| 1118 } | |
| 1119 | |
| 1120 if (recurseTimes < 0) { | |
| 1121 if (isRegExp(value)) { | |
| 1122 return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); | |
| 1123 } else { | |
| 1124 return ctx.stylize('[Object]', 'special'); | |
| 1125 } | |
| 1126 } | |
| 1127 | |
| 1128 ctx.seen.push(value); | |
| 1129 | |
| 1130 var output; | |
| 1131 if (array) { | |
| 1132 output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); | |
| 1133 } else { | |
| 1134 output = keys.map(function(key) { | |
| 1135 return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); | |
| 1136 }); | |
| 1137 } | |
| 1138 | |
| 1139 ctx.seen.pop(); | |
| 1140 | |
| 1141 return reduceToSingleString(output, base, braces); | |
| 1142 } | |
| 1143 | |
| 1144 | |
| 1145 function formatPrimitive(ctx, value) { | |
| 1146 if (isUndefined(value)) | |
| 1147 return ctx.stylize('undefined', 'undefined'); | |
| 1148 if (isString(value)) { | |
| 1149 var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') | |
| 1150 .replace(/'/g, "\\'") | |
| 1151 .replace(/\\"/g, '"') + '\''; | |
| 1152 return ctx.stylize(simple, 'string'); | |
| 1153 } | |
| 1154 if (isNumber(value)) | |
| 1155 return ctx.stylize('' + value, 'number'); | |
| 1156 if (isBoolean(value)) | |
| 1157 return ctx.stylize('' + value, 'boolean'); | |
| 1158 // For some reason typeof null is "object", so special case here. | |
| 1159 if (isNull(value)) | |
| 1160 return ctx.stylize('null', 'null'); | |
| 1161 } | |
| 1162 | |
| 1163 | |
| 1164 function formatError(value) { | |
| 1165 return '[' + Error.prototype.toString.call(value) + ']'; | |
| 1166 } | |
| 1167 | |
| 1168 | |
| 1169 function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { | |
| 1170 var output = []; | |
| 1171 for (var i = 0, l = value.length; i < l; ++i) { | |
| 1172 if (hasOwnProperty(value, String(i))) { | |
| 1173 output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, | |
| 1174 String(i), true)); | |
| 1175 } else { | |
| 1176 output.push(''); | |
| 1177 } | |
| 1178 } | |
| 1179 keys.forEach(function(key) { | |
| 1180 if (!key.match(/^\d+$/)) { | |
| 1181 output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, | |
| 1182 key, true)); | |
| 1183 } | |
| 1184 }); | |
| 1185 return output; | |
| 1186 } | |
| 1187 | |
| 1188 | |
| 1189 function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { | |
| 1190 var name, str, desc; | |
| 1191 desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; | |
| 1192 if (desc.get) { | |
| 1193 if (desc.set) { | |
| 1194 str = ctx.stylize('[Getter/Setter]', 'special'); | |
| 1195 } else { | |
| 1196 str = ctx.stylize('[Getter]', 'special'); | |
| 1197 } | |
| 1198 } else { | |
| 1199 if (desc.set) { | |
| 1200 str = ctx.stylize('[Setter]', 'special'); | |
| 1201 } | |
| 1202 } | |
| 1203 if (!hasOwnProperty(visibleKeys, key)) { | |
| 1204 name = '[' + key + ']'; | |
| 1205 } | |
| 1206 if (!str) { | |
| 1207 if (ctx.seen.indexOf(desc.value) < 0) { | |
| 1208 if (isNull(recurseTimes)) { | |
| 1209 str = formatValue(ctx, desc.value, null); | |
| 1210 } else { | |
| 1211 str = formatValue(ctx, desc.value, recurseTimes - 1); | |
| 1212 } | |
| 1213 if (str.indexOf('\n') > -1) { | |
| 1214 if (array) { | |
| 1215 str = str.split('\n').map(function(line) { | |
| 1216 return ' ' + line; | |
| 1217 }).join('\n').substr(2); | |
| 1218 } else { | |
| 1219 str = '\n' + str.split('\n').map(function(line) { | |
| 1220 return ' ' + line; | |
| 1221 }).join('\n'); | |
| 1222 } | |
| 1223 } | |
| 1224 } else { | |
| 1225 str = ctx.stylize('[Circular]', 'special'); | |
| 1226 } | |
| 1227 } | |
| 1228 if (isUndefined(name)) { | |
| 1229 if (array && key.match(/^\d+$/)) { | |
| 1230 return str; | |
| 1231 } | |
| 1232 name = JSON.stringify('' + key); | |
| 1233 if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { | |
| 1234 name = name.substr(1, name.length - 2); | |
| 1235 name = ctx.stylize(name, 'name'); | |
| 1236 } else { | |
| 1237 name = name.replace(/'/g, "\\'") | |
| 1238 .replace(/\\"/g, '"') | |
| 1239 .replace(/(^"|"$)/g, "'"); | |
| 1240 name = ctx.stylize(name, 'string'); | |
| 1241 } | |
| 1242 } | |
| 1243 | |
| 1244 return name + ': ' + str; | |
| 1245 } | |
| 1246 | |
| 1247 | |
| 1248 function reduceToSingleString(output, base, braces) { | |
| 1249 var numLinesEst = 0; | |
| 1250 var length = output.reduce(function(prev, cur) { | |
| 1251 numLinesEst++; | |
| 1252 if (cur.indexOf('\n') >= 0) numLinesEst++; | |
| 1253 return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; | |
| 1254 }, 0); | |
| 1255 | |
| 1256 if (length > 60) { | |
| 1257 return braces[0] + | |
| 1258 (base === '' ? '' : base + '\n ') + | |
| 1259 ' ' + | |
| 1260 output.join(',\n ') + | |
| 1261 ' ' + | |
| 1262 braces[1]; | |
| 1263 } | |
| 1264 | |
| 1265 return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; | |
| 1266 } | |
| 1267 | |
| 1268 | |
| 1269 // NOTE: These type checking functions intentionally don't use `instanceof` | |
| 1270 // because it is fragile and can be easily faked with `Object.create()`. | |
| 1271 function isArray(ar) { | |
| 1272 return Array.isArray(ar); | |
| 1273 } | |
| 1274 exports.isArray = isArray; | |
| 1275 | |
| 1276 function isBoolean(arg) { | |
| 1277 return typeof arg === 'boolean'; | |
| 1278 } | |
| 1279 exports.isBoolean = isBoolean; | |
| 1280 | |
| 1281 function isNull(arg) { | |
| 1282 return arg === null; | |
| 1283 } | |
| 1284 exports.isNull = isNull; | |
| 1285 | |
| 1286 function isNullOrUndefined(arg) { | |
| 1287 return arg == null; | |
| 1288 } | |
| 1289 exports.isNullOrUndefined = isNullOrUndefined; | |
| 1290 | |
| 1291 function isNumber(arg) { | |
| 1292 return typeof arg === 'number'; | |
| 1293 } | |
| 1294 exports.isNumber = isNumber; | |
| 1295 | |
| 1296 function isString(arg) { | |
| 1297 return typeof arg === 'string'; | |
| 1298 } | |
| 1299 exports.isString = isString; | |
| 1300 | |
| 1301 function isSymbol(arg) { | |
| 1302 return typeof arg === 'symbol'; | |
| 1303 } | |
| 1304 exports.isSymbol = isSymbol; | |
| 1305 | |
| 1306 function isUndefined(arg) { | |
| 1307 return arg === void 0; | |
| 1308 } | |
| 1309 exports.isUndefined = isUndefined; | |
| 1310 | |
| 1311 function isRegExp(re) { | |
| 1312 return isObject(re) && objectToString(re) === '[object RegExp]'; | |
| 1313 } | |
| 1314 exports.isRegExp = isRegExp; | |
| 1315 | |
| 1316 function isObject(arg) { | |
| 1317 return typeof arg === 'object' && arg !== null; | |
| 1318 } | |
| 1319 exports.isObject = isObject; | |
| 1320 | |
| 1321 function isDate(d) { | |
| 1322 return isObject(d) && objectToString(d) === '[object Date]'; | |
| 1323 } | |
| 1324 exports.isDate = isDate; | |
| 1325 | |
| 1326 function isError(e) { | |
| 1327 return isObject(e) && | |
| 1328 (objectToString(e) === '[object Error]' || e instanceof Error); | |
| 1329 } | |
| 1330 exports.isError = isError; | |
| 1331 | |
| 1332 function isFunction(arg) { | |
| 1333 return typeof arg === 'function'; | |
| 1334 } | |
| 1335 exports.isFunction = isFunction; | |
| 1336 | |
| 1337 function isPrimitive(arg) { | |
| 1338 return arg === null || | |
| 1339 typeof arg === 'boolean' || | |
| 1340 typeof arg === 'number' || | |
| 1341 typeof arg === 'string' || | |
| 1342 typeof arg === 'symbol' || // ES6 symbol | |
| 1343 typeof arg === 'undefined'; | |
| 1344 } | |
| 1345 exports.isPrimitive = isPrimitive; | |
| 1346 | |
| 1347 exports.isBuffer = require('./support/isBuffer'); | |
| 1348 | |
| 1349 function objectToString(o) { | |
| 1350 return Object.prototype.toString.call(o); | |
| 1351 } | |
| 1352 | |
| 1353 | |
| 1354 function pad(n) { | |
| 1355 return n < 10 ? '0' + n.toString(10) : n.toString(10); | |
| 1356 } | |
| 1357 | |
| 1358 | |
| 1359 var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', | |
| 1360 'Oct', 'Nov', 'Dec']; | |
| 1361 | |
| 1362 // 26 Feb 16:19:34 | |
| 1363 function timestamp() { | |
| 1364 var d = new Date(); | |
| 1365 var time = [pad(d.getHours()), | |
| 1366 pad(d.getMinutes()), | |
| 1367 pad(d.getSeconds())].join(':'); | |
| 1368 return [d.getDate(), months[d.getMonth()], time].join(' '); | |
| 1369 } | |
| 1370 | |
| 1371 | |
| 1372 // log is just a thin wrapper to console.log that prepends a timestamp | |
| 1373 exports.log = function() { | |
| 1374 console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); | |
| 1375 }; | |
| 1376 | |
| 1377 | |
| 1378 /** | |
| 1379 * Inherit the prototype methods from one constructor into another. | |
| 1380 * | |
| 1381 * The Function.prototype.inherits from lang.js rewritten as a standalone | |
| 1382 * function (not on Function.prototype). NOTE: If this file is to be loaded | |
| 1383 * during bootstrapping this function needs to be rewritten using some native | |
| 1384 * functions as prototype setup using normal JavaScript does not work as | |
| 1385 * expected during bootstrapping (see mirror.js in r114903). | |
| 1386 * | |
| 1387 * @param {function} ctor Constructor function which needs to inherit the | |
| 1388 * prototype. | |
| 1389 * @param {function} superCtor Constructor function to inherit prototype from. | |
| 1390 */ | |
| 1391 exports.inherits = require('inherits'); | |
| 1392 | |
| 1393 exports._extend = function(origin, add) { | |
| 1394 // Don't do anything if add isn't an object | |
| 1395 if (!add || !isObject(add)) return origin; | |
| 1396 | |
| 1397 var keys = Object.keys(add); | |
| 1398 var i = keys.length; | |
| 1399 while (i--) { | |
| 1400 origin[keys[i]] = add[keys[i]]; | |
| 1401 } | |
| 1402 return origin; | |
| 1403 }; | |
| 1404 | |
| 1405 function hasOwnProperty(obj, prop) { | |
| 1406 return Object.prototype.hasOwnProperty.call(obj, prop); | |
| 1407 } | |
| 1408 | |
| 1409 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
| 1410 },{"./support/isBuffer":8,"_process":6,"inherits":7}],10:[function(require,module,exports){ | |
| 1411 (function (global){ | |
| 1412 /*global window, global*/ | |
| 1413 var util = require("util") | |
| 1414 var assert = require("assert") | |
| 1415 var now = require("date-now") | |
| 1416 | |
| 1417 var slice = Array.prototype.slice | |
| 1418 var console | |
| 1419 var times = {} | |
| 1420 | |
| 1421 if (typeof global !== "undefined" && global.console) { | |
| 1422 console = global.console | |
| 1423 } else if (typeof window !== "undefined" && window.console) { | |
| 1424 console = window.console | |
| 1425 } else { | |
| 1426 console = {} | |
| 1427 } | |
| 1428 | |
| 1429 var functions = [ | |
| 1430 [log, "log"], | |
| 1431 [info, "info"], | |
| 1432 [warn, "warn"], | |
| 1433 [error, "error"], | |
| 1434 [time, "time"], | |
| 1435 [timeEnd, "timeEnd"], | |
| 1436 [trace, "trace"], | |
| 1437 [dir, "dir"], | |
| 1438 [consoleAssert, "assert"] | |
| 1439 ] | |
| 1440 | |
| 1441 for (var i = 0; i < functions.length; i++) { | |
| 1442 var tuple = functions[i] | |
| 1443 var f = tuple[0] | |
| 1444 var name = tuple[1] | |
| 1445 | |
| 1446 if (!console[name]) { | |
| 1447 console[name] = f | |
| 1448 } | |
| 1449 } | |
| 1450 | |
| 1451 module.exports = console | |
| 1452 | |
| 1453 function log() {} | |
| 1454 | |
| 1455 function info() { | |
| 1456 console.log.apply(console, arguments) | |
| 1457 } | |
| 1458 | |
| 1459 function warn() { | |
| 1460 console.log.apply(console, arguments) | |
| 1461 } | |
| 1462 | |
| 1463 function error() { | |
| 1464 console.warn.apply(console, arguments) | |
| 1465 } | |
| 1466 | |
| 1467 function time(label) { | |
| 1468 times[label] = now() | |
| 1469 } | |
| 1470 | |
| 1471 function timeEnd(label) { | |
| 1472 var time = times[label] | |
| 1473 if (!time) { | |
| 1474 throw new Error("No such label: " + label) | |
| 1475 } | |
| 1476 | |
| 1477 var duration = now() - time | |
| 1478 console.log(label + ": " + duration + "ms") | |
| 1479 } | |
| 1480 | |
| 1481 function trace() { | |
| 1482 var err = new Error() | |
| 1483 err.name = "Trace" | |
| 1484 err.message = util.format.apply(null, arguments) | |
| 1485 console.error(err.stack) | |
| 1486 } | |
| 1487 | |
| 1488 function dir(object) { | |
| 1489 console.log(util.inspect(object) + "\n") | |
| 1490 } | |
| 1491 | |
| 1492 function consoleAssert(expression) { | |
| 1493 if (!expression) { | |
| 1494 var arr = slice.call(arguments, 1) | |
| 1495 assert.ok(false, util.format.apply(null, arr)) | |
| 1496 } | |
| 1497 } | |
| 1498 | |
| 1499 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
| 1500 },{"assert":4,"date-now":11,"util":9}],11:[function(require,module,exports){ | |
| 1501 module.exports = now | |
| 1502 | |
| 1503 function now() { | |
| 1504 return new Date().getTime() | |
| 1505 } | |
| 1506 | |
| 1507 },{}],12:[function(require,module,exports){ | |
| 1508 (function (global){ | |
| 1509 /** | |
| 1510 * @license | |
| 1511 * lodash 3.7.0 (Custom Build) <https://lodash.com/> | |
| 1512 * Build: `lodash modern -d -o ./index.js` | |
| 1513 * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/> | |
| 1514 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE> | |
| 1515 * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors | |
| 1516 * Available under MIT license <https://lodash.com/license> | |
| 1517 */ | |
| 1518 ;(function() { | |
| 1519 | |
| 1520 /** Used as a safe reference for `undefined` in pre-ES5 environments. */ | |
| 1521 var undefined; | |
| 1522 | |
| 1523 /** Used as the semantic version number. */ | |
| 1524 var VERSION = '3.7.0'; | |
| 1525 | |
| 1526 /** Used to compose bitmasks for wrapper metadata. */ | |
| 1527 var BIND_FLAG = 1, | |
| 1528 BIND_KEY_FLAG = 2, | |
| 1529 CURRY_BOUND_FLAG = 4, | |
| 1530 CURRY_FLAG = 8, | |
| 1531 CURRY_RIGHT_FLAG = 16, | |
| 1532 PARTIAL_FLAG = 32, | |
| 1533 PARTIAL_RIGHT_FLAG = 64, | |
| 1534 ARY_FLAG = 128, | |
| 1535 REARG_FLAG = 256; | |
| 1536 | |
| 1537 /** Used as default options for `_.trunc`. */ | |
| 1538 var DEFAULT_TRUNC_LENGTH = 30, | |
| 1539 DEFAULT_TRUNC_OMISSION = '...'; | |
| 1540 | |
| 1541 /** Used to detect when a function becomes hot. */ | |
| 1542 var HOT_COUNT = 150, | |
| 1543 HOT_SPAN = 16; | |
| 1544 | |
| 1545 /** Used to indicate the type of lazy iteratees. */ | |
| 1546 var LAZY_DROP_WHILE_FLAG = 0, | |
| 1547 LAZY_FILTER_FLAG = 1, | |
| 1548 LAZY_MAP_FLAG = 2; | |
| 1549 | |
| 1550 /** Used as the `TypeError` message for "Functions" methods. */ | |
| 1551 var FUNC_ERROR_TEXT = 'Expected a function'; | |
| 1552 | |
| 1553 /** Used as the internal argument placeholder. */ | |
| 1554 var PLACEHOLDER = '__lodash_placeholder__'; | |
| 1555 | |
| 1556 /** `Object#toString` result references. */ | |
| 1557 var argsTag = '[object Arguments]', | |
| 1558 arrayTag = '[object Array]', | |
| 1559 boolTag = '[object Boolean]', | |
| 1560 dateTag = '[object Date]', | |
| 1561 errorTag = '[object Error]', | |
| 1562 funcTag = '[object Function]', | |
| 1563 mapTag = '[object Map]', | |
| 1564 numberTag = '[object Number]', | |
| 1565 objectTag = '[object Object]', | |
| 1566 regexpTag = '[object RegExp]', | |
| 1567 setTag = '[object Set]', | |
| 1568 stringTag = '[object String]', | |
| 1569 weakMapTag = '[object WeakMap]'; | |
| 1570 | |
| 1571 var arrayBufferTag = '[object ArrayBuffer]', | |
| 1572 float32Tag = '[object Float32Array]', | |
| 1573 float64Tag = '[object Float64Array]', | |
| 1574 int8Tag = '[object Int8Array]', | |
| 1575 int16Tag = '[object Int16Array]', | |
| 1576 int32Tag = '[object Int32Array]', | |
| 1577 uint8Tag = '[object Uint8Array]', | |
| 1578 uint8ClampedTag = '[object Uint8ClampedArray]', | |
| 1579 uint16Tag = '[object Uint16Array]', | |
| 1580 uint32Tag = '[object Uint32Array]'; | |
| 1581 | |
| 1582 /** Used to match empty string literals in compiled template source. */ | |
| 1583 var reEmptyStringLeading = /\b__p \+= '';/g, | |
| 1584 reEmptyStringMiddle = /\b(__p \+=) '' \+/g, | |
| 1585 reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; | |
| 1586 | |
| 1587 /** Used to match HTML entities and HTML characters. */ | |
| 1588 var reEscapedHtml = /&(?:amp|lt|gt|quot|#39|#96);/g, | |
| 1589 reUnescapedHtml = /[&<>"'`]/g, | |
| 1590 reHasEscapedHtml = RegExp(reEscapedHtml.source), | |
| 1591 reHasUnescapedHtml = RegExp(reUnescapedHtml.source); | |
| 1592 | |
| 1593 /** Used to match template delimiters. */ | |
| 1594 var reEscape = /<%-([\s\S]+?)%>/g, | |
| 1595 reEvaluate = /<%([\s\S]+?)%>/g, | |
| 1596 reInterpolate = /<%=([\s\S]+?)%>/g; | |
| 1597 | |
| 1598 /** Used to match property names within property paths. */ | |
| 1599 var reIsDeepProp = /\.|\[(?:[^[\]]+|(["'])(?:(?!\1)[^\n\\]|\\.)*?)\1\]/, | |
| 1600 reIsPlainProp = /^\w*$/, | |
| 1601 rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\n\\]|\\.)*?)\2)\]/g; | |
| 1602 | |
| 1603 /** | |
| 1604 * Used to match `RegExp` [special characters](http://www.regular-expressions.info/characters.html#special). | |
| 1605 * In addition to special characters the forward slash is escaped to allow for | |
| 1606 * easier `eval` use and `Function` compilation. | |
| 1607 */ | |
| 1608 var reRegExpChars = /[.*+?^${}()|[\]\/\\]/g, | |
| 1609 reHasRegExpChars = RegExp(reRegExpChars.source); | |
| 1610 | |
| 1611 /** Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). */ | |
| 1612 var reComboMark = /[\u0300-\u036f\ufe20-\ufe23]/g; | |
| 1613 | |
| 1614 /** Used to match backslashes in property paths. */ | |
| 1615 var reEscapeChar = /\\(\\)?/g; | |
| 1616 | |
| 1617 /** Used to match [ES template delimiters](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-template-literal-lexical-components). */ | |
| 1618 var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; | |
| 1619 | |
| 1620 /** Used to match `RegExp` flags from their coerced string values. */ | |
| 1621 var reFlags = /\w*$/; | |
| 1622 | |
| 1623 /** Used to detect hexadecimal string values. */ | |
| 1624 var reHasHexPrefix = /^0[xX]/; | |
| 1625 | |
| 1626 /** Used to detect host constructors (Safari > 5). */ | |
| 1627 var reIsHostCtor = /^\[object .+?Constructor\]$/; | |
| 1628 | |
| 1629 /** Used to match latin-1 supplementary letters (excluding mathematical operators). */ | |
| 1630 var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/g; | |
| 1631 | |
| 1632 /** Used to ensure capturing order of template delimiters. */ | |
| 1633 var reNoMatch = /($^)/; | |
| 1634 | |
| 1635 /** Used to match unescaped characters in compiled string literals. */ | |
| 1636 var reUnescapedString = /['\n\r\u2028\u2029\\]/g; | |
| 1637 | |
| 1638 /** Used to match words to create compound words. */ | |
| 1639 var reWords = (function() { | |
| 1640 var upper = '[A-Z\\xc0-\\xd6\\xd8-\\xde]', | |
| 1641 lower = '[a-z\\xdf-\\xf6\\xf8-\\xff]+'; | |
| 1642 | |
| 1643 return RegExp(upper + '+(?=' + upper + lower + ')|' + upper + '?' + lower + '|' + upper + '+|[0-9]+', 'g'); | |
| 1644 }()); | |
| 1645 | |
| 1646 /** Used to detect and test for whitespace. */ | |
| 1647 var whitespace = ( | |
| 1648 // Basic whitespace characters. | |
| 1649 ' \t\x0b\f\xa0\ufeff' + | |
| 1650 | |
| 1651 // Line terminators. | |
| 1652 '\n\r\u2028\u2029' + | |
| 1653 | |
| 1654 // Unicode category "Zs" space separators. | |
| 1655 '\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000' | |
| 1656 ); | |
| 1657 | |
| 1658 /** Used to assign default `context` object properties. */ | |
| 1659 var contextProps = [ | |
| 1660 'Array', 'ArrayBuffer', 'Date', 'Error', 'Float32Array', 'Float64Array', | |
| 1661 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Math', 'Number', | |
| 1662 'Object', 'RegExp', 'Set', 'String', '_', 'clearTimeout', 'document', | |
| 1663 'isFinite', 'parseInt', 'setTimeout', 'TypeError', 'Uint8Array', | |
| 1664 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', | |
| 1665 'window' | |
| 1666 ]; | |
| 1667 | |
| 1668 /** Used to make template sourceURLs easier to identify. */ | |
| 1669 var templateCounter = -1; | |
| 1670 | |
| 1671 /** Used to identify `toStringTag` values of typed arrays. */ | |
| 1672 var typedArrayTags = {}; | |
| 1673 typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = | |
| 1674 typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = | |
| 1675 typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = | |
| 1676 typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = | |
| 1677 typedArrayTags[uint32Tag] = true; | |
| 1678 typedArrayTags[argsTag] = typedArrayTags[arrayTag] = | |
| 1679 typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = | |
| 1680 typedArrayTags[dateTag] = typedArrayTags[errorTag] = | |
| 1681 typedArrayTags[funcTag] = typedArrayTags[mapTag] = | |
| 1682 typedArrayTags[numberTag] = typedArrayTags[objectTag] = | |
| 1683 typedArrayTags[regexpTag] = typedArrayTags[setTag] = | |
| 1684 typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false; | |
| 1685 | |
| 1686 /** Used to identify `toStringTag` values supported by `_.clone`. */ | |
| 1687 var cloneableTags = {}; | |
| 1688 cloneableTags[argsTag] = cloneableTags[arrayTag] = | |
| 1689 cloneableTags[arrayBufferTag] = cloneableTags[boolTag] = | |
| 1690 cloneableTags[dateTag] = cloneableTags[float32Tag] = | |
| 1691 cloneableTags[float64Tag] = cloneableTags[int8Tag] = | |
| 1692 cloneableTags[int16Tag] = cloneableTags[int32Tag] = | |
| 1693 cloneableTags[numberTag] = cloneableTags[objectTag] = | |
| 1694 cloneableTags[regexpTag] = cloneableTags[stringTag] = | |
| 1695 cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = | |
| 1696 cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true; | |
| 1697 cloneableTags[errorTag] = cloneableTags[funcTag] = | |
| 1698 cloneableTags[mapTag] = cloneableTags[setTag] = | |
| 1699 cloneableTags[weakMapTag] = false; | |
| 1700 | |
| 1701 /** Used as an internal `_.debounce` options object by `_.throttle`. */ | |
| 1702 var debounceOptions = { | |
| 1703 'leading': false, | |
| 1704 'maxWait': 0, | |
| 1705 'trailing': false | |
| 1706 }; | |
| 1707 | |
| 1708 /** Used to map latin-1 supplementary letters to basic latin letters. */ | |
| 1709 var deburredLetters = { | |
| 1710 '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A', | |
| 1711 '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a', | |
| 1712 '\xc7': 'C', '\xe7': 'c', | |
| 1713 '\xd0': 'D', '\xf0': 'd', | |
| 1714 '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E', | |
| 1715 '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e', | |
| 1716 '\xcC': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I', | |
| 1717 '\xeC': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i', | |
| 1718 '\xd1': 'N', '\xf1': 'n', | |
| 1719 '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O', | |
| 1720 '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o', | |
| 1721 '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U', | |
| 1722 '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u', | |
| 1723 '\xdd': 'Y', '\xfd': 'y', '\xff': 'y', | |
| 1724 '\xc6': 'Ae', '\xe6': 'ae', | |
| 1725 '\xde': 'Th', '\xfe': 'th', | |
| 1726 '\xdf': 'ss' | |
| 1727 }; | |
| 1728 | |
| 1729 /** Used to map characters to HTML entities. */ | |
| 1730 var htmlEscapes = { | |
| 1731 '&': '&', | |
| 1732 '<': '<', | |
| 1733 '>': '>', | |
| 1734 '"': '"', | |
| 1735 "'": ''', | |
| 1736 '`': '`' | |
| 1737 }; | |
| 1738 | |
| 1739 /** Used to map HTML entities to characters. */ | |
| 1740 var htmlUnescapes = { | |
| 1741 '&': '&', | |
| 1742 '<': '<', | |
| 1743 '>': '>', | |
| 1744 '"': '"', | |
| 1745 ''': "'", | |
| 1746 '`': '`' | |
| 1747 }; | |
| 1748 | |
| 1749 /** Used to determine if values are of the language type `Object`. */ | |
| 1750 var objectTypes = { | |
| 1751 'function': true, | |
| 1752 'object': true | |
| 1753 }; | |
| 1754 | |
| 1755 /** Used to escape characters for inclusion in compiled string literals. */ | |
| 1756 var stringEscapes = { | |
| 1757 '\\': '\\', | |
| 1758 "'": "'", | |
| 1759 '\n': 'n', | |
| 1760 '\r': 'r', | |
| 1761 '\u2028': 'u2028', | |
| 1762 '\u2029': 'u2029' | |
| 1763 }; | |
| 1764 | |
| 1765 /** Detect free variable `exports`. */ | |
| 1766 var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports; | |
| 1767 | |
| 1768 /** Detect free variable `module`. */ | |
| 1769 var freeModule = objectTypes[typeof module] && module && !module.nodeType && module; | |
| 1770 | |
| 1771 /** Detect free variable `global` from Node.js. */ | |
| 1772 var freeGlobal = freeExports && freeModule && typeof global == 'object' && global && global.Object && global; | |
| 1773 | |
| 1774 /** Detect free variable `self`. */ | |
| 1775 var freeSelf = objectTypes[typeof self] && self && self.Object && self; | |
| 1776 | |
| 1777 /** Detect free variable `window`. */ | |
| 1778 var freeWindow = objectTypes[typeof window] && window && window.Object && window; | |
| 1779 | |
| 1780 /** Detect the popular CommonJS extension `module.exports`. */ | |
| 1781 var moduleExports = freeModule && freeModule.exports === freeExports && freeExports; | |
| 1782 | |
| 1783 /** | |
| 1784 * Used as a reference to the global object. | |
| 1785 * | |
| 1786 * The `this` value is used if it is the global object to avoid Greasemonkey's | |
| 1787 * restricted `window` object, otherwise the `window` object is used. | |
| 1788 */ | |
| 1789 var root = freeGlobal || ((freeWindow !== (this && this.window)) && freeWindow) || freeSelf || this; | |
| 1790 | |
| 1791 /*--------------------------------------------------------------------------*/ | |
| 1792 | |
| 1793 /** | |
| 1794 * The base implementation of `compareAscending` which compares values and | |
| 1795 * sorts them in ascending order without guaranteeing a stable sort. | |
| 1796 * | |
| 1797 * @private | |
| 1798 * @param {*} value The value to compare to `other`. | |
| 1799 * @param {*} other The value to compare to `value`. | |
| 1800 * @returns {number} Returns the sort order indicator for `value`. | |
| 1801 */ | |
| 1802 function baseCompareAscending(value, other) { | |
| 1803 if (value !== other) { | |
| 1804 var valIsReflexive = value === value, | |
| 1805 othIsReflexive = other === other; | |
| 1806 | |
| 1807 if (value > other || !valIsReflexive || (value === undefined && othIsReflexive)) { | |
| 1808 return 1; | |
| 1809 } | |
| 1810 if (value < other || !othIsReflexive || (other === undefined && valIsReflexive)) { | |
| 1811 return -1; | |
| 1812 } | |
| 1813 } | |
| 1814 return 0; | |
| 1815 } | |
| 1816 | |
| 1817 /** | |
| 1818 * The base implementation of `_.findIndex` and `_.findLastIndex` without | |
| 1819 * support for callback shorthands and `this` binding. | |
| 1820 * | |
| 1821 * @private | |
| 1822 * @param {Array} array The array to search. | |
| 1823 * @param {Function} predicate The function invoked per iteration. | |
| 1824 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 1825 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 1826 */ | |
| 1827 function baseFindIndex(array, predicate, fromRight) { | |
| 1828 var length = array.length, | |
| 1829 index = fromRight ? length : -1; | |
| 1830 | |
| 1831 while ((fromRight ? index-- : ++index < length)) { | |
| 1832 if (predicate(array[index], index, array)) { | |
| 1833 return index; | |
| 1834 } | |
| 1835 } | |
| 1836 return -1; | |
| 1837 } | |
| 1838 | |
| 1839 /** | |
| 1840 * The base implementation of `_.indexOf` without support for binary searches. | |
| 1841 * | |
| 1842 * @private | |
| 1843 * @param {Array} array The array to search. | |
| 1844 * @param {*} value The value to search for. | |
| 1845 * @param {number} fromIndex The index to search from. | |
| 1846 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 1847 */ | |
| 1848 function baseIndexOf(array, value, fromIndex) { | |
| 1849 if (value !== value) { | |
| 1850 return indexOfNaN(array, fromIndex); | |
| 1851 } | |
| 1852 var index = fromIndex - 1, | |
| 1853 length = array.length; | |
| 1854 | |
| 1855 while (++index < length) { | |
| 1856 if (array[index] === value) { | |
| 1857 return index; | |
| 1858 } | |
| 1859 } | |
| 1860 return -1; | |
| 1861 } | |
| 1862 | |
| 1863 /** | |
| 1864 * The base implementation of `_.isFunction` without support for environments | |
| 1865 * with incorrect `typeof` results. | |
| 1866 * | |
| 1867 * @private | |
| 1868 * @param {*} value The value to check. | |
| 1869 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 1870 */ | |
| 1871 function baseIsFunction(value) { | |
| 1872 // Avoid a Chakra JIT bug in compatibility modes of IE 11. | |
| 1873 // See https://github.com/jashkenas/underscore/issues/1621 for more details. | |
| 1874 return typeof value == 'function' || false; | |
| 1875 } | |
| 1876 | |
| 1877 /** | |
| 1878 * Converts `value` to a string if it is not one. An empty string is returned | |
| 1879 * for `null` or `undefined` values. | |
| 1880 * | |
| 1881 * @private | |
| 1882 * @param {*} value The value to process. | |
| 1883 * @returns {string} Returns the string. | |
| 1884 */ | |
| 1885 function baseToString(value) { | |
| 1886 if (typeof value == 'string') { | |
| 1887 return value; | |
| 1888 } | |
| 1889 return value == null ? '' : (value + ''); | |
| 1890 } | |
| 1891 | |
| 1892 /** | |
| 1893 * Used by `_.max` and `_.min` as the default callback for string values. | |
| 1894 * | |
| 1895 * @private | |
| 1896 * @param {string} string The string to inspect. | |
| 1897 * @returns {number} Returns the code unit of the first character of the string. | |
| 1898 */ | |
| 1899 function charAtCallback(string) { | |
| 1900 return string.charCodeAt(0); | |
| 1901 } | |
| 1902 | |
| 1903 /** | |
| 1904 * Used by `_.trim` and `_.trimLeft` to get the index of the first character | |
| 1905 * of `string` that is not found in `chars`. | |
| 1906 * | |
| 1907 * @private | |
| 1908 * @param {string} string The string to inspect. | |
| 1909 * @param {string} chars The characters to find. | |
| 1910 * @returns {number} Returns the index of the first character not found in `chars`. | |
| 1911 */ | |
| 1912 function charsLeftIndex(string, chars) { | |
| 1913 var index = -1, | |
| 1914 length = string.length; | |
| 1915 | |
| 1916 while (++index < length && chars.indexOf(string.charAt(index)) > -1) {} | |
| 1917 return index; | |
| 1918 } | |
| 1919 | |
| 1920 /** | |
| 1921 * Used by `_.trim` and `_.trimRight` to get the index of the last character | |
| 1922 * of `string` that is not found in `chars`. | |
| 1923 * | |
| 1924 * @private | |
| 1925 * @param {string} string The string to inspect. | |
| 1926 * @param {string} chars The characters to find. | |
| 1927 * @returns {number} Returns the index of the last character not found in `chars`. | |
| 1928 */ | |
| 1929 function charsRightIndex(string, chars) { | |
| 1930 var index = string.length; | |
| 1931 | |
| 1932 while (index-- && chars.indexOf(string.charAt(index)) > -1) {} | |
| 1933 return index; | |
| 1934 } | |
| 1935 | |
| 1936 /** | |
| 1937 * Used by `_.sortBy` to compare transformed elements of a collection and stable | |
| 1938 * sort them in ascending order. | |
| 1939 * | |
| 1940 * @private | |
| 1941 * @param {Object} object The object to compare to `other`. | |
| 1942 * @param {Object} other The object to compare to `object`. | |
| 1943 * @returns {number} Returns the sort order indicator for `object`. | |
| 1944 */ | |
| 1945 function compareAscending(object, other) { | |
| 1946 return baseCompareAscending(object.criteria, other.criteria) || (object.index - other.index); | |
| 1947 } | |
| 1948 | |
| 1949 /** | |
| 1950 * Used by `_.sortByOrder` to compare multiple properties of each element | |
| 1951 * in a collection and stable sort them in the following order: | |
| 1952 * | |
| 1953 * If `orders` is unspecified, sort in ascending order for all properties. | |
| 1954 * Otherwise, for each property, sort in ascending order if its corresponding value in | |
| 1955 * orders is true, and descending order if false. | |
| 1956 * | |
| 1957 * @private | |
| 1958 * @param {Object} object The object to compare to `other`. | |
| 1959 * @param {Object} other The object to compare to `object`. | |
| 1960 * @param {boolean[]} orders The order to sort by for each property. | |
| 1961 * @returns {number} Returns the sort order indicator for `object`. | |
| 1962 */ | |
| 1963 function compareMultiple(object, other, orders) { | |
| 1964 var index = -1, | |
| 1965 objCriteria = object.criteria, | |
| 1966 othCriteria = other.criteria, | |
| 1967 length = objCriteria.length, | |
| 1968 ordersLength = orders.length; | |
| 1969 | |
| 1970 while (++index < length) { | |
| 1971 var result = baseCompareAscending(objCriteria[index], othCriteria[index]); | |
| 1972 if (result) { | |
| 1973 if (index >= ordersLength) { | |
| 1974 return result; | |
| 1975 } | |
| 1976 return result * (orders[index] ? 1 : -1); | |
| 1977 } | |
| 1978 } | |
| 1979 // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications | |
| 1980 // that causes it, under certain circumstances, to provide the same value for | |
| 1981 // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247 | |
| 1982 // for more details. | |
| 1983 // | |
| 1984 // This also ensures a stable sort in V8 and other engines. | |
| 1985 // See https://code.google.com/p/v8/issues/detail?id=90 for more details. | |
| 1986 return object.index - other.index; | |
| 1987 } | |
| 1988 | |
| 1989 /** | |
| 1990 * Used by `_.deburr` to convert latin-1 supplementary letters to basic latin letters. | |
| 1991 * | |
| 1992 * @private | |
| 1993 * @param {string} letter The matched letter to deburr. | |
| 1994 * @returns {string} Returns the deburred letter. | |
| 1995 */ | |
| 1996 function deburrLetter(letter) { | |
| 1997 return deburredLetters[letter]; | |
| 1998 } | |
| 1999 | |
| 2000 /** | |
| 2001 * Used by `_.escape` to convert characters to HTML entities. | |
| 2002 * | |
| 2003 * @private | |
| 2004 * @param {string} chr The matched character to escape. | |
| 2005 * @returns {string} Returns the escaped character. | |
| 2006 */ | |
| 2007 function escapeHtmlChar(chr) { | |
| 2008 return htmlEscapes[chr]; | |
| 2009 } | |
| 2010 | |
| 2011 /** | |
| 2012 * Used by `_.template` to escape characters for inclusion in compiled | |
| 2013 * string literals. | |
| 2014 * | |
| 2015 * @private | |
| 2016 * @param {string} chr The matched character to escape. | |
| 2017 * @returns {string} Returns the escaped character. | |
| 2018 */ | |
| 2019 function escapeStringChar(chr) { | |
| 2020 return '\\' + stringEscapes[chr]; | |
| 2021 } | |
| 2022 | |
| 2023 /** | |
| 2024 * Gets the index at which the first occurrence of `NaN` is found in `array`. | |
| 2025 * | |
| 2026 * @private | |
| 2027 * @param {Array} array The array to search. | |
| 2028 * @param {number} fromIndex The index to search from. | |
| 2029 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 2030 * @returns {number} Returns the index of the matched `NaN`, else `-1`. | |
| 2031 */ | |
| 2032 function indexOfNaN(array, fromIndex, fromRight) { | |
| 2033 var length = array.length, | |
| 2034 index = fromIndex + (fromRight ? 0 : -1); | |
| 2035 | |
| 2036 while ((fromRight ? index-- : ++index < length)) { | |
| 2037 var other = array[index]; | |
| 2038 if (other !== other) { | |
| 2039 return index; | |
| 2040 } | |
| 2041 } | |
| 2042 return -1; | |
| 2043 } | |
| 2044 | |
| 2045 /** | |
| 2046 * Checks if `value` is object-like. | |
| 2047 * | |
| 2048 * @private | |
| 2049 * @param {*} value The value to check. | |
| 2050 * @returns {boolean} Returns `true` if `value` is object-like, else `false`. | |
| 2051 */ | |
| 2052 function isObjectLike(value) { | |
| 2053 return !!value && typeof value == 'object'; | |
| 2054 } | |
| 2055 | |
| 2056 /** | |
| 2057 * Used by `trimmedLeftIndex` and `trimmedRightIndex` to determine if a | |
| 2058 * character code is whitespace. | |
| 2059 * | |
| 2060 * @private | |
| 2061 * @param {number} charCode The character code to inspect. | |
| 2062 * @returns {boolean} Returns `true` if `charCode` is whitespace, else `false`. | |
| 2063 */ | |
| 2064 function isSpace(charCode) { | |
| 2065 return ((charCode <= 160 && (charCode >= 9 && charCode <= 13) || charCode == 32 || charCode == 160) || charCode == 5760 || charCode == 6158 || | |
| 2066 (charCode >= 8192 && (charCode <= 8202 || charCode == 8232 || charCode == 8233 || charCode == 8239 || charCode == 8287 || charCode == 12288 || charCode == 65279))); | |
| 2067 } | |
| 2068 | |
| 2069 /** | |
| 2070 * Replaces all `placeholder` elements in `array` with an internal placeholder | |
| 2071 * and returns an array of their indexes. | |
| 2072 * | |
| 2073 * @private | |
| 2074 * @param {Array} array The array to modify. | |
| 2075 * @param {*} placeholder The placeholder to replace. | |
| 2076 * @returns {Array} Returns the new array of placeholder indexes. | |
| 2077 */ | |
| 2078 function replaceHolders(array, placeholder) { | |
| 2079 var index = -1, | |
| 2080 length = array.length, | |
| 2081 resIndex = -1, | |
| 2082 result = []; | |
| 2083 | |
| 2084 while (++index < length) { | |
| 2085 if (array[index] === placeholder) { | |
| 2086 array[index] = PLACEHOLDER; | |
| 2087 result[++resIndex] = index; | |
| 2088 } | |
| 2089 } | |
| 2090 return result; | |
| 2091 } | |
| 2092 | |
| 2093 /** | |
| 2094 * An implementation of `_.uniq` optimized for sorted arrays without support | |
| 2095 * for callback shorthands and `this` binding. | |
| 2096 * | |
| 2097 * @private | |
| 2098 * @param {Array} array The array to inspect. | |
| 2099 * @param {Function} [iteratee] The function invoked per iteration. | |
| 2100 * @returns {Array} Returns the new duplicate-value-free array. | |
| 2101 */ | |
| 2102 function sortedUniq(array, iteratee) { | |
| 2103 var seen, | |
| 2104 index = -1, | |
| 2105 length = array.length, | |
| 2106 resIndex = -1, | |
| 2107 result = []; | |
| 2108 | |
| 2109 while (++index < length) { | |
| 2110 var value = array[index], | |
| 2111 computed = iteratee ? iteratee(value, index, array) : value; | |
| 2112 | |
| 2113 if (!index || seen !== computed) { | |
| 2114 seen = computed; | |
| 2115 result[++resIndex] = value; | |
| 2116 } | |
| 2117 } | |
| 2118 return result; | |
| 2119 } | |
| 2120 | |
| 2121 /** | |
| 2122 * Used by `_.trim` and `_.trimLeft` to get the index of the first non-whitespace | |
| 2123 * character of `string`. | |
| 2124 * | |
| 2125 * @private | |
| 2126 * @param {string} string The string to inspect. | |
| 2127 * @returns {number} Returns the index of the first non-whitespace character. | |
| 2128 */ | |
| 2129 function trimmedLeftIndex(string) { | |
| 2130 var index = -1, | |
| 2131 length = string.length; | |
| 2132 | |
| 2133 while (++index < length && isSpace(string.charCodeAt(index))) {} | |
| 2134 return index; | |
| 2135 } | |
| 2136 | |
| 2137 /** | |
| 2138 * Used by `_.trim` and `_.trimRight` to get the index of the last non-whitespace | |
| 2139 * character of `string`. | |
| 2140 * | |
| 2141 * @private | |
| 2142 * @param {string} string The string to inspect. | |
| 2143 * @returns {number} Returns the index of the last non-whitespace character. | |
| 2144 */ | |
| 2145 function trimmedRightIndex(string) { | |
| 2146 var index = string.length; | |
| 2147 | |
| 2148 while (index-- && isSpace(string.charCodeAt(index))) {} | |
| 2149 return index; | |
| 2150 } | |
| 2151 | |
| 2152 /** | |
| 2153 * Used by `_.unescape` to convert HTML entities to characters. | |
| 2154 * | |
| 2155 * @private | |
| 2156 * @param {string} chr The matched character to unescape. | |
| 2157 * @returns {string} Returns the unescaped character. | |
| 2158 */ | |
| 2159 function unescapeHtmlChar(chr) { | |
| 2160 return htmlUnescapes[chr]; | |
| 2161 } | |
| 2162 | |
| 2163 /*--------------------------------------------------------------------------*/ | |
| 2164 | |
| 2165 /** | |
| 2166 * Create a new pristine `lodash` function using the given `context` object. | |
| 2167 * | |
| 2168 * @static | |
| 2169 * @memberOf _ | |
| 2170 * @category Utility | |
| 2171 * @param {Object} [context=root] The context object. | |
| 2172 * @returns {Function} Returns a new `lodash` function. | |
| 2173 * @example | |
| 2174 * | |
| 2175 * _.mixin({ 'foo': _.constant('foo') }); | |
| 2176 * | |
| 2177 * var lodash = _.runInContext(); | |
| 2178 * lodash.mixin({ 'bar': lodash.constant('bar') }); | |
| 2179 * | |
| 2180 * _.isFunction(_.foo); | |
| 2181 * // => true | |
| 2182 * _.isFunction(_.bar); | |
| 2183 * // => false | |
| 2184 * | |
| 2185 * lodash.isFunction(lodash.foo); | |
| 2186 * // => false | |
| 2187 * lodash.isFunction(lodash.bar); | |
| 2188 * // => true | |
| 2189 * | |
| 2190 * // using `context` to mock `Date#getTime` use in `_.now` | |
| 2191 * var mock = _.runInContext({ | |
| 2192 * 'Date': function() { | |
| 2193 * return { 'getTime': getTimeMock }; | |
| 2194 * } | |
| 2195 * }); | |
| 2196 * | |
| 2197 * // or creating a suped-up `defer` in Node.js | |
| 2198 * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer; | |
| 2199 */ | |
| 2200 function runInContext(context) { | |
| 2201 // Avoid issues with some ES3 environments that attempt to use values, named | |
| 2202 // after built-in constructors like `Object`, for the creation of literals. | |
| 2203 // ES5 clears this up by stating that literals must use built-in constructors. | |
| 2204 // See https://es5.github.io/#x11.1.5 for more details. | |
| 2205 context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root; | |
| 2206 | |
| 2207 /** Native constructor references. */ | |
| 2208 var Array = context.Array, | |
| 2209 Date = context.Date, | |
| 2210 Error = context.Error, | |
| 2211 Function = context.Function, | |
| 2212 Math = context.Math, | |
| 2213 Number = context.Number, | |
| 2214 Object = context.Object, | |
| 2215 RegExp = context.RegExp, | |
| 2216 String = context.String, | |
| 2217 TypeError = context.TypeError; | |
| 2218 | |
| 2219 /** Used for native method references. */ | |
| 2220 var arrayProto = Array.prototype, | |
| 2221 objectProto = Object.prototype, | |
| 2222 stringProto = String.prototype; | |
| 2223 | |
| 2224 /** Used to detect DOM support. */ | |
| 2225 var document = (document = context.window) && document.document; | |
| 2226 | |
| 2227 /** Used to resolve the decompiled source of functions. */ | |
| 2228 var fnToString = Function.prototype.toString; | |
| 2229 | |
| 2230 /** Used to check objects for own properties. */ | |
| 2231 var hasOwnProperty = objectProto.hasOwnProperty; | |
| 2232 | |
| 2233 /** Used to generate unique IDs. */ | |
| 2234 var idCounter = 0; | |
| 2235 | |
| 2236 /** | |
| 2237 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring) | |
| 2238 * of values. | |
| 2239 */ | |
| 2240 var objToString = objectProto.toString; | |
| 2241 | |
| 2242 /** Used to restore the original `_` reference in `_.noConflict`. */ | |
| 2243 var oldDash = context._; | |
| 2244 | |
| 2245 /** Used to detect if a method is native. */ | |
| 2246 var reIsNative = RegExp('^' + | |
| 2247 escapeRegExp(objToString) | |
| 2248 .replace(/toString|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' | |
| 2249 ); | |
| 2250 | |
| 2251 /** Native method references. */ | |
| 2252 var ArrayBuffer = isNative(ArrayBuffer = context.ArrayBuffer) && ArrayBuffer, | |
| 2253 bufferSlice = isNative(bufferSlice = ArrayBuffer && new ArrayBuffer(0).slice) && bufferSlice, | |
| 2254 ceil = Math.ceil, | |
| 2255 clearTimeout = context.clearTimeout, | |
| 2256 floor = Math.floor, | |
| 2257 getOwnPropertySymbols = isNative(getOwnPropertySymbols = Object.getOwnPropertySymbols) && getOwnPropertySymbols, | |
| 2258 getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf, | |
| 2259 push = arrayProto.push, | |
| 2260 preventExtensions = isNative(Object.preventExtensions = Object.preventExtensions) && preventExtensions, | |
| 2261 propertyIsEnumerable = objectProto.propertyIsEnumerable, | |
| 2262 Set = isNative(Set = context.Set) && Set, | |
| 2263 setTimeout = context.setTimeout, | |
| 2264 splice = arrayProto.splice, | |
| 2265 Uint8Array = isNative(Uint8Array = context.Uint8Array) && Uint8Array, | |
| 2266 WeakMap = isNative(WeakMap = context.WeakMap) && WeakMap; | |
| 2267 | |
| 2268 /** Used to clone array buffers. */ | |
| 2269 var Float64Array = (function() { | |
| 2270 // Safari 5 errors when using an array buffer to initialize a typed array | |
| 2271 // where the array buffer's `byteLength` is not a multiple of the typed | |
| 2272 // array's `BYTES_PER_ELEMENT`. | |
| 2273 try { | |
| 2274 var func = isNative(func = context.Float64Array) && func, | |
| 2275 result = new func(new ArrayBuffer(10), 0, 1) && func; | |
| 2276 } catch(e) {} | |
| 2277 return result; | |
| 2278 }()); | |
| 2279 | |
| 2280 /** Used as `baseAssign`. */ | |
| 2281 var nativeAssign = (function() { | |
| 2282 // Avoid `Object.assign` in Firefox 34-37 which have an early implementation | |
| 2283 // with a now defunct try/catch behavior. See https://bugzilla.mozilla.org/show_bug.cgi?id=1103344 | |
| 2284 // for more details. | |
| 2285 // | |
| 2286 // Use `Object.preventExtensions` on a plain object instead of simply using | |
| 2287 // `Object('x')` because Chrome and IE fail to throw an error when attempting | |
| 2288 // to assign values to readonly indexes of strings in strict mode. | |
| 2289 var object = { '1': 0 }, | |
| 2290 func = preventExtensions && isNative(func = Object.assign) && func; | |
| 2291 | |
| 2292 try { func(preventExtensions(object), 'xo'); } catch(e) {} | |
| 2293 return !object[1] && func; | |
| 2294 }()); | |
| 2295 | |
| 2296 /* Native method references for those with the same name as other `lodash` methods. */ | |
| 2297 var nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray, | |
| 2298 nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate, | |
| 2299 nativeIsFinite = context.isFinite, | |
| 2300 nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys, | |
| 2301 nativeMax = Math.max, | |
| 2302 nativeMin = Math.min, | |
| 2303 nativeNow = isNative(nativeNow = Date.now) && nativeNow, | |
| 2304 nativeNumIsFinite = isNative(nativeNumIsFinite = Number.isFinite) && nativeNumIsFinite, | |
| 2305 nativeParseInt = context.parseInt, | |
| 2306 nativeRandom = Math.random; | |
| 2307 | |
| 2308 /** Used as references for `-Infinity` and `Infinity`. */ | |
| 2309 var NEGATIVE_INFINITY = Number.NEGATIVE_INFINITY, | |
| 2310 POSITIVE_INFINITY = Number.POSITIVE_INFINITY; | |
| 2311 | |
| 2312 /** Used as references for the maximum length and index of an array. */ | |
| 2313 var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1, | |
| 2314 MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1, | |
| 2315 HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; | |
| 2316 | |
| 2317 /** Used as the size, in bytes, of each `Float64Array` element. */ | |
| 2318 var FLOAT64_BYTES_PER_ELEMENT = Float64Array ? Float64Array.BYTES_PER_ELEMENT : 0; | |
| 2319 | |
| 2320 /** | |
| 2321 * Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer) | |
| 2322 * of an array-like value. | |
| 2323 */ | |
| 2324 var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1; | |
| 2325 | |
| 2326 /** Used to store function metadata. */ | |
| 2327 var metaMap = WeakMap && new WeakMap; | |
| 2328 | |
| 2329 /** Used to lookup unminified function names. */ | |
| 2330 var realNames = {}; | |
| 2331 | |
| 2332 /*------------------------------------------------------------------------*/ | |
| 2333 | |
| 2334 /** | |
| 2335 * Creates a `lodash` object which wraps `value` to enable implicit chaining. | |
| 2336 * Methods that operate on and return arrays, collections, and functions can | |
| 2337 * be chained together. Methods that return a boolean or single value will | |
| 2338 * automatically end the chain returning the unwrapped value. Explicit chaining | |
| 2339 * may be enabled using `_.chain`. The execution of chained methods is lazy, | |
| 2340 * that is, execution is deferred until `_#value` is implicitly or explicitly | |
| 2341 * called. | |
| 2342 * | |
| 2343 * Lazy evaluation allows several methods to support shortcut fusion. Shortcut | |
| 2344 * fusion is an optimization that merges iteratees to avoid creating intermediate | |
| 2345 * arrays and reduce the number of iteratee executions. | |
| 2346 * | |
| 2347 * Chaining is supported in custom builds as long as the `_#value` method is | |
| 2348 * directly or indirectly included in the build. | |
| 2349 * | |
| 2350 * In addition to lodash methods, wrappers have `Array` and `String` methods. | |
| 2351 * | |
| 2352 * The wrapper `Array` methods are: | |
| 2353 * `concat`, `join`, `pop`, `push`, `reverse`, `shift`, `slice`, `sort`, | |
| 2354 * `splice`, and `unshift` | |
| 2355 * | |
| 2356 * The wrapper `String` methods are: | |
| 2357 * `replace` and `split` | |
| 2358 * | |
| 2359 * The wrapper methods that support shortcut fusion are: | |
| 2360 * `compact`, `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `filter`, | |
| 2361 * `first`, `initial`, `last`, `map`, `pluck`, `reject`, `rest`, `reverse`, | |
| 2362 * `slice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `toArray`, | |
| 2363 * and `where` | |
| 2364 * | |
| 2365 * The chainable wrapper methods are: | |
| 2366 * `after`, `ary`, `assign`, `at`, `before`, `bind`, `bindAll`, `bindKey`, | |
| 2367 * `callback`, `chain`, `chunk`, `commit`, `compact`, `concat`, `constant`, | |
| 2368 * `countBy`, `create`, `curry`, `debounce`, `defaults`, `defer`, `delay`, | |
| 2369 * `difference`, `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `fill`, | |
| 2370 * `filter`, `flatten`, `flattenDeep`, `flow`, `flowRight`, `forEach`, | |
| 2371 * `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `functions`, | |
| 2372 * `groupBy`, `indexBy`, `initial`, `intersection`, `invert`, `invoke`, `keys`, | |
| 2373 * `keysIn`, `map`, `mapValues`, `matches`, `matchesProperty`, `memoize`, | |
| 2374 * `merge`, `mixin`, `negate`, `omit`, `once`, `pairs`, `partial`, `partialRight`, | |
| 2375 * `partition`, `pick`, `plant`, `pluck`, `property`, `propertyOf`, `pull`, | |
| 2376 * `pullAt`, `push`, `range`, `rearg`, `reject`, `remove`, `rest`, `reverse`, | |
| 2377 * `shuffle`, `slice`, `sort`, `sortBy`, `sortByAll`, `sortByOrder`, `splice`, | |
| 2378 * `spread`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `tap`, | |
| 2379 * `throttle`, `thru`, `times`, `toArray`, `toPlainObject`, `transform`, | |
| 2380 * `union`, `uniq`, `unshift`, `unzip`, `values`, `valuesIn`, `where`, | |
| 2381 * `without`, `wrap`, `xor`, `zip`, and `zipObject` | |
| 2382 * | |
| 2383 * The wrapper methods that are **not** chainable by default are: | |
| 2384 * `add`, `attempt`, `camelCase`, `capitalize`, `clone`, `cloneDeep`, `deburr`, | |
| 2385 * `endsWith`, `escape`, `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, | |
| 2386 * `findLast`, `findLastIndex`, `findLastKey`, `findWhere`, `first`, `has`, | |
| 2387 * `identity`, `includes`, `indexOf`, `inRange`, `isArguments`, `isArray`, | |
| 2388 * `isBoolean`, `isDate`, `isElement`, `isEmpty`, `isEqual`, `isError`, `isFinite` | |
| 2389 * `isFunction`, `isMatch`, `isNative`, `isNaN`, `isNull`, `isNumber`, `isObject`, | |
| 2390 * `isPlainObject`, `isRegExp`, `isString`, `isUndefined`, `isTypedArray`, | |
| 2391 * `join`, `kebabCase`, `last`, `lastIndexOf`, `max`, `min`, `noConflict`, | |
| 2392 * `noop`, `now`, `pad`, `padLeft`, `padRight`, `parseInt`, `pop`, `random`, | |
| 2393 * `reduce`, `reduceRight`, `repeat`, `result`, `runInContext`, `shift`, `size`, | |
| 2394 * `snakeCase`, `some`, `sortedIndex`, `sortedLastIndex`, `startCase`, `startsWith`, | |
| 2395 * `sum`, `template`, `trim`, `trimLeft`, `trimRight`, `trunc`, `unescape`, | |
| 2396 * `uniqueId`, `value`, and `words` | |
| 2397 * | |
| 2398 * The wrapper method `sample` will return a wrapped value when `n` is provided, | |
| 2399 * otherwise an unwrapped value is returned. | |
| 2400 * | |
| 2401 * @name _ | |
| 2402 * @constructor | |
| 2403 * @category Chain | |
| 2404 * @param {*} value The value to wrap in a `lodash` instance. | |
| 2405 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 2406 * @example | |
| 2407 * | |
| 2408 * var wrapped = _([1, 2, 3]); | |
| 2409 * | |
| 2410 * // returns an unwrapped value | |
| 2411 * wrapped.reduce(function(total, n) { | |
| 2412 * return total + n; | |
| 2413 * }); | |
| 2414 * // => 6 | |
| 2415 * | |
| 2416 * // returns a wrapped value | |
| 2417 * var squares = wrapped.map(function(n) { | |
| 2418 * return n * n; | |
| 2419 * }); | |
| 2420 * | |
| 2421 * _.isArray(squares); | |
| 2422 * // => false | |
| 2423 * | |
| 2424 * _.isArray(squares.value()); | |
| 2425 * // => true | |
| 2426 */ | |
| 2427 function lodash(value) { | |
| 2428 if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) { | |
| 2429 if (value instanceof LodashWrapper) { | |
| 2430 return value; | |
| 2431 } | |
| 2432 if (hasOwnProperty.call(value, '__chain__') && hasOwnProperty.call(value, '__wrapped__')) { | |
| 2433 return wrapperClone(value); | |
| 2434 } | |
| 2435 } | |
| 2436 return new LodashWrapper(value); | |
| 2437 } | |
| 2438 | |
| 2439 /** | |
| 2440 * The function whose prototype all chaining wrappers inherit from. | |
| 2441 * | |
| 2442 * @private | |
| 2443 */ | |
| 2444 function baseLodash() { | |
| 2445 // No operation performed. | |
| 2446 } | |
| 2447 | |
| 2448 /** | |
| 2449 * The base constructor for creating `lodash` wrapper objects. | |
| 2450 * | |
| 2451 * @private | |
| 2452 * @param {*} value The value to wrap. | |
| 2453 * @param {boolean} [chainAll] Enable chaining for all wrapper methods. | |
| 2454 * @param {Array} [actions=[]] Actions to peform to resolve the unwrapped value. | |
| 2455 */ | |
| 2456 function LodashWrapper(value, chainAll, actions) { | |
| 2457 this.__wrapped__ = value; | |
| 2458 this.__actions__ = actions || []; | |
| 2459 this.__chain__ = !!chainAll; | |
| 2460 } | |
| 2461 | |
| 2462 /** | |
| 2463 * An object environment feature flags. | |
| 2464 * | |
| 2465 * @static | |
| 2466 * @memberOf _ | |
| 2467 * @type Object | |
| 2468 */ | |
| 2469 var support = lodash.support = {}; | |
| 2470 | |
| 2471 (function(x) { | |
| 2472 var Ctor = function() { this.x = x; }, | |
| 2473 object = { '0': x, 'length': x }, | |
| 2474 props = []; | |
| 2475 | |
| 2476 Ctor.prototype = { 'valueOf': x, 'y': x }; | |
| 2477 for (var key in new Ctor) { props.push(key); } | |
| 2478 | |
| 2479 /** | |
| 2480 * Detect if functions can be decompiled by `Function#toString` | |
| 2481 * (all but Firefox OS certified apps, older Opera mobile browsers, and | |
| 2482 * the PlayStation 3; forced `false` for Windows 8 apps). | |
| 2483 * | |
| 2484 * @memberOf _.support | |
| 2485 * @type boolean | |
| 2486 */ | |
| 2487 support.funcDecomp = /\bthis\b/.test(function() { return this; }); | |
| 2488 | |
| 2489 /** | |
| 2490 * Detect if `Function#name` is supported (all but IE). | |
| 2491 * | |
| 2492 * @memberOf _.support | |
| 2493 * @type boolean | |
| 2494 */ | |
| 2495 support.funcNames = typeof Function.name == 'string'; | |
| 2496 | |
| 2497 /** | |
| 2498 * Detect if the DOM is supported. | |
| 2499 * | |
| 2500 * @memberOf _.support | |
| 2501 * @type boolean | |
| 2502 */ | |
| 2503 try { | |
| 2504 support.dom = document.createDocumentFragment().nodeType === 11; | |
| 2505 } catch(e) { | |
| 2506 support.dom = false; | |
| 2507 } | |
| 2508 | |
| 2509 /** | |
| 2510 * Detect if `arguments` object indexes are non-enumerable. | |
| 2511 * | |
| 2512 * In Firefox < 4, IE < 9, PhantomJS, and Safari < 5.1 `arguments` object | |
| 2513 * indexes are non-enumerable. Chrome < 25 and Node.js < 0.11.0 treat | |
| 2514 * `arguments` object indexes as non-enumerable and fail `hasOwnProperty` | |
| 2515 * checks for indexes that exceed the number of function parameters and | |
| 2516 * whose associated argument values are `0`. | |
| 2517 * | |
| 2518 * @memberOf _.support | |
| 2519 * @type boolean | |
| 2520 */ | |
| 2521 try { | |
| 2522 support.nonEnumArgs = !propertyIsEnumerable.call(arguments, 1); | |
| 2523 } catch(e) { | |
| 2524 support.nonEnumArgs = true; | |
| 2525 } | |
| 2526 }(1, 0)); | |
| 2527 | |
| 2528 /** | |
| 2529 * By default, the template delimiters used by lodash are like those in | |
| 2530 * embedded Ruby (ERB). Change the following template settings to use | |
| 2531 * alternative delimiters. | |
| 2532 * | |
| 2533 * @static | |
| 2534 * @memberOf _ | |
| 2535 * @type Object | |
| 2536 */ | |
| 2537 lodash.templateSettings = { | |
| 2538 | |
| 2539 /** | |
| 2540 * Used to detect `data` property values to be HTML-escaped. | |
| 2541 * | |
| 2542 * @memberOf _.templateSettings | |
| 2543 * @type RegExp | |
| 2544 */ | |
| 2545 'escape': reEscape, | |
| 2546 | |
| 2547 /** | |
| 2548 * Used to detect code to be evaluated. | |
| 2549 * | |
| 2550 * @memberOf _.templateSettings | |
| 2551 * @type RegExp | |
| 2552 */ | |
| 2553 'evaluate': reEvaluate, | |
| 2554 | |
| 2555 /** | |
| 2556 * Used to detect `data` property values to inject. | |
| 2557 * | |
| 2558 * @memberOf _.templateSettings | |
| 2559 * @type RegExp | |
| 2560 */ | |
| 2561 'interpolate': reInterpolate, | |
| 2562 | |
| 2563 /** | |
| 2564 * Used to reference the data object in the template text. | |
| 2565 * | |
| 2566 * @memberOf _.templateSettings | |
| 2567 * @type string | |
| 2568 */ | |
| 2569 'variable': '', | |
| 2570 | |
| 2571 /** | |
| 2572 * Used to import variables into the compiled template. | |
| 2573 * | |
| 2574 * @memberOf _.templateSettings | |
| 2575 * @type Object | |
| 2576 */ | |
| 2577 'imports': { | |
| 2578 | |
| 2579 /** | |
| 2580 * A reference to the `lodash` function. | |
| 2581 * | |
| 2582 * @memberOf _.templateSettings.imports | |
| 2583 * @type Function | |
| 2584 */ | |
| 2585 '_': lodash | |
| 2586 } | |
| 2587 }; | |
| 2588 | |
| 2589 /*------------------------------------------------------------------------*/ | |
| 2590 | |
| 2591 /** | |
| 2592 * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation. | |
| 2593 * | |
| 2594 * @private | |
| 2595 * @param {*} value The value to wrap. | |
| 2596 */ | |
| 2597 function LazyWrapper(value) { | |
| 2598 this.__wrapped__ = value; | |
| 2599 this.__actions__ = null; | |
| 2600 this.__dir__ = 1; | |
| 2601 this.__dropCount__ = 0; | |
| 2602 this.__filtered__ = false; | |
| 2603 this.__iteratees__ = null; | |
| 2604 this.__takeCount__ = POSITIVE_INFINITY; | |
| 2605 this.__views__ = null; | |
| 2606 } | |
| 2607 | |
| 2608 /** | |
| 2609 * Creates a clone of the lazy wrapper object. | |
| 2610 * | |
| 2611 * @private | |
| 2612 * @name clone | |
| 2613 * @memberOf LazyWrapper | |
| 2614 * @returns {Object} Returns the cloned `LazyWrapper` object. | |
| 2615 */ | |
| 2616 function lazyClone() { | |
| 2617 var actions = this.__actions__, | |
| 2618 iteratees = this.__iteratees__, | |
| 2619 views = this.__views__, | |
| 2620 result = new LazyWrapper(this.__wrapped__); | |
| 2621 | |
| 2622 result.__actions__ = actions ? arrayCopy(actions) : null; | |
| 2623 result.__dir__ = this.__dir__; | |
| 2624 result.__filtered__ = this.__filtered__; | |
| 2625 result.__iteratees__ = iteratees ? arrayCopy(iteratees) : null; | |
| 2626 result.__takeCount__ = this.__takeCount__; | |
| 2627 result.__views__ = views ? arrayCopy(views) : null; | |
| 2628 return result; | |
| 2629 } | |
| 2630 | |
| 2631 /** | |
| 2632 * Reverses the direction of lazy iteration. | |
| 2633 * | |
| 2634 * @private | |
| 2635 * @name reverse | |
| 2636 * @memberOf LazyWrapper | |
| 2637 * @returns {Object} Returns the new reversed `LazyWrapper` object. | |
| 2638 */ | |
| 2639 function lazyReverse() { | |
| 2640 if (this.__filtered__) { | |
| 2641 var result = new LazyWrapper(this); | |
| 2642 result.__dir__ = -1; | |
| 2643 result.__filtered__ = true; | |
| 2644 } else { | |
| 2645 result = this.clone(); | |
| 2646 result.__dir__ *= -1; | |
| 2647 } | |
| 2648 return result; | |
| 2649 } | |
| 2650 | |
| 2651 /** | |
| 2652 * Extracts the unwrapped value from its lazy wrapper. | |
| 2653 * | |
| 2654 * @private | |
| 2655 * @name value | |
| 2656 * @memberOf LazyWrapper | |
| 2657 * @returns {*} Returns the unwrapped value. | |
| 2658 */ | |
| 2659 function lazyValue() { | |
| 2660 var array = this.__wrapped__.value(); | |
| 2661 if (!isArray(array)) { | |
| 2662 return baseWrapperValue(array, this.__actions__); | |
| 2663 } | |
| 2664 var dir = this.__dir__, | |
| 2665 isRight = dir < 0, | |
| 2666 view = getView(0, array.length, this.__views__), | |
| 2667 start = view.start, | |
| 2668 end = view.end, | |
| 2669 length = end - start, | |
| 2670 index = isRight ? end : (start - 1), | |
| 2671 takeCount = nativeMin(length, this.__takeCount__), | |
| 2672 iteratees = this.__iteratees__, | |
| 2673 iterLength = iteratees ? iteratees.length : 0, | |
| 2674 resIndex = 0, | |
| 2675 result = []; | |
| 2676 | |
| 2677 outer: | |
| 2678 while (length-- && resIndex < takeCount) { | |
| 2679 index += dir; | |
| 2680 | |
| 2681 var iterIndex = -1, | |
| 2682 value = array[index]; | |
| 2683 | |
| 2684 while (++iterIndex < iterLength) { | |
| 2685 var data = iteratees[iterIndex], | |
| 2686 iteratee = data.iteratee, | |
| 2687 type = data.type; | |
| 2688 | |
| 2689 if (type == LAZY_DROP_WHILE_FLAG) { | |
| 2690 if (data.done && (isRight ? (index > data.index) : (index < data.index))) { | |
| 2691 data.count = 0; | |
| 2692 data.done = false; | |
| 2693 } | |
| 2694 data.index = index; | |
| 2695 if (!data.done) { | |
| 2696 var limit = data.limit; | |
| 2697 if (!(data.done = limit > -1 ? (data.count++ >= limit) : !iteratee(value))) { | |
| 2698 continue outer; | |
| 2699 } | |
| 2700 } | |
| 2701 } else { | |
| 2702 var computed = iteratee(value); | |
| 2703 if (type == LAZY_MAP_FLAG) { | |
| 2704 value = computed; | |
| 2705 } else if (!computed) { | |
| 2706 if (type == LAZY_FILTER_FLAG) { | |
| 2707 continue outer; | |
| 2708 } else { | |
| 2709 break outer; | |
| 2710 } | |
| 2711 } | |
| 2712 } | |
| 2713 } | |
| 2714 result[resIndex++] = value; | |
| 2715 } | |
| 2716 return result; | |
| 2717 } | |
| 2718 | |
| 2719 /*------------------------------------------------------------------------*/ | |
| 2720 | |
| 2721 /** | |
| 2722 * Creates a cache object to store key/value pairs. | |
| 2723 * | |
| 2724 * @private | |
| 2725 * @static | |
| 2726 * @name Cache | |
| 2727 * @memberOf _.memoize | |
| 2728 */ | |
| 2729 function MapCache() { | |
| 2730 this.__data__ = {}; | |
| 2731 } | |
| 2732 | |
| 2733 /** | |
| 2734 * Removes `key` and its value from the cache. | |
| 2735 * | |
| 2736 * @private | |
| 2737 * @name delete | |
| 2738 * @memberOf _.memoize.Cache | |
| 2739 * @param {string} key The key of the value to remove. | |
| 2740 * @returns {boolean} Returns `true` if the entry was removed successfully, else `false`. | |
| 2741 */ | |
| 2742 function mapDelete(key) { | |
| 2743 return this.has(key) && delete this.__data__[key]; | |
| 2744 } | |
| 2745 | |
| 2746 /** | |
| 2747 * Gets the cached value for `key`. | |
| 2748 * | |
| 2749 * @private | |
| 2750 * @name get | |
| 2751 * @memberOf _.memoize.Cache | |
| 2752 * @param {string} key The key of the value to get. | |
| 2753 * @returns {*} Returns the cached value. | |
| 2754 */ | |
| 2755 function mapGet(key) { | |
| 2756 return key == '__proto__' ? undefined : this.__data__[key]; | |
| 2757 } | |
| 2758 | |
| 2759 /** | |
| 2760 * Checks if a cached value for `key` exists. | |
| 2761 * | |
| 2762 * @private | |
| 2763 * @name has | |
| 2764 * @memberOf _.memoize.Cache | |
| 2765 * @param {string} key The key of the entry to check. | |
| 2766 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. | |
| 2767 */ | |
| 2768 function mapHas(key) { | |
| 2769 return key != '__proto__' && hasOwnProperty.call(this.__data__, key); | |
| 2770 } | |
| 2771 | |
| 2772 /** | |
| 2773 * Sets `value` to `key` of the cache. | |
| 2774 * | |
| 2775 * @private | |
| 2776 * @name set | |
| 2777 * @memberOf _.memoize.Cache | |
| 2778 * @param {string} key The key of the value to cache. | |
| 2779 * @param {*} value The value to cache. | |
| 2780 * @returns {Object} Returns the cache object. | |
| 2781 */ | |
| 2782 function mapSet(key, value) { | |
| 2783 if (key != '__proto__') { | |
| 2784 this.__data__[key] = value; | |
| 2785 } | |
| 2786 return this; | |
| 2787 } | |
| 2788 | |
| 2789 /*------------------------------------------------------------------------*/ | |
| 2790 | |
| 2791 /** | |
| 2792 * | |
| 2793 * Creates a cache object to store unique values. | |
| 2794 * | |
| 2795 * @private | |
| 2796 * @param {Array} [values] The values to cache. | |
| 2797 */ | |
| 2798 function SetCache(values) { | |
| 2799 var length = values ? values.length : 0; | |
| 2800 | |
| 2801 this.data = { 'hash': nativeCreate(null), 'set': new Set }; | |
| 2802 while (length--) { | |
| 2803 this.push(values[length]); | |
| 2804 } | |
| 2805 } | |
| 2806 | |
| 2807 /** | |
| 2808 * Checks if `value` is in `cache` mimicking the return signature of | |
| 2809 * `_.indexOf` by returning `0` if the value is found, else `-1`. | |
| 2810 * | |
| 2811 * @private | |
| 2812 * @param {Object} cache The cache to search. | |
| 2813 * @param {*} value The value to search for. | |
| 2814 * @returns {number} Returns `0` if `value` is found, else `-1`. | |
| 2815 */ | |
| 2816 function cacheIndexOf(cache, value) { | |
| 2817 var data = cache.data, | |
| 2818 result = (typeof value == 'string' || isObject(value)) ? data.set.has(value) : data.hash[value]; | |
| 2819 | |
| 2820 return result ? 0 : -1; | |
| 2821 } | |
| 2822 | |
| 2823 /** | |
| 2824 * Adds `value` to the cache. | |
| 2825 * | |
| 2826 * @private | |
| 2827 * @name push | |
| 2828 * @memberOf SetCache | |
| 2829 * @param {*} value The value to cache. | |
| 2830 */ | |
| 2831 function cachePush(value) { | |
| 2832 var data = this.data; | |
| 2833 if (typeof value == 'string' || isObject(value)) { | |
| 2834 data.set.add(value); | |
| 2835 } else { | |
| 2836 data.hash[value] = true; | |
| 2837 } | |
| 2838 } | |
| 2839 | |
| 2840 /*------------------------------------------------------------------------*/ | |
| 2841 | |
| 2842 /** | |
| 2843 * Copies the values of `source` to `array`. | |
| 2844 * | |
| 2845 * @private | |
| 2846 * @param {Array} source The array to copy values from. | |
| 2847 * @param {Array} [array=[]] The array to copy values to. | |
| 2848 * @returns {Array} Returns `array`. | |
| 2849 */ | |
| 2850 function arrayCopy(source, array) { | |
| 2851 var index = -1, | |
| 2852 length = source.length; | |
| 2853 | |
| 2854 array || (array = Array(length)); | |
| 2855 while (++index < length) { | |
| 2856 array[index] = source[index]; | |
| 2857 } | |
| 2858 return array; | |
| 2859 } | |
| 2860 | |
| 2861 /** | |
| 2862 * A specialized version of `_.forEach` for arrays without support for callback | |
| 2863 * shorthands and `this` binding. | |
| 2864 * | |
| 2865 * @private | |
| 2866 * @param {Array} array The array to iterate over. | |
| 2867 * @param {Function} iteratee The function invoked per iteration. | |
| 2868 * @returns {Array} Returns `array`. | |
| 2869 */ | |
| 2870 function arrayEach(array, iteratee) { | |
| 2871 var index = -1, | |
| 2872 length = array.length; | |
| 2873 | |
| 2874 while (++index < length) { | |
| 2875 if (iteratee(array[index], index, array) === false) { | |
| 2876 break; | |
| 2877 } | |
| 2878 } | |
| 2879 return array; | |
| 2880 } | |
| 2881 | |
| 2882 /** | |
| 2883 * A specialized version of `_.forEachRight` for arrays without support for | |
| 2884 * callback shorthands and `this` binding. | |
| 2885 * | |
| 2886 * @private | |
| 2887 * @param {Array} array The array to iterate over. | |
| 2888 * @param {Function} iteratee The function invoked per iteration. | |
| 2889 * @returns {Array} Returns `array`. | |
| 2890 */ | |
| 2891 function arrayEachRight(array, iteratee) { | |
| 2892 var length = array.length; | |
| 2893 | |
| 2894 while (length--) { | |
| 2895 if (iteratee(array[length], length, array) === false) { | |
| 2896 break; | |
| 2897 } | |
| 2898 } | |
| 2899 return array; | |
| 2900 } | |
| 2901 | |
| 2902 /** | |
| 2903 * A specialized version of `_.every` for arrays without support for callback | |
| 2904 * shorthands and `this` binding. | |
| 2905 * | |
| 2906 * @private | |
| 2907 * @param {Array} array The array to iterate over. | |
| 2908 * @param {Function} predicate The function invoked per iteration. | |
| 2909 * @returns {boolean} Returns `true` if all elements pass the predicate check, | |
| 2910 * else `false`. | |
| 2911 */ | |
| 2912 function arrayEvery(array, predicate) { | |
| 2913 var index = -1, | |
| 2914 length = array.length; | |
| 2915 | |
| 2916 while (++index < length) { | |
| 2917 if (!predicate(array[index], index, array)) { | |
| 2918 return false; | |
| 2919 } | |
| 2920 } | |
| 2921 return true; | |
| 2922 } | |
| 2923 | |
| 2924 /** | |
| 2925 * A specialized version of `_.filter` for arrays without support for callback | |
| 2926 * shorthands and `this` binding. | |
| 2927 * | |
| 2928 * @private | |
| 2929 * @param {Array} array The array to iterate over. | |
| 2930 * @param {Function} predicate The function invoked per iteration. | |
| 2931 * @returns {Array} Returns the new filtered array. | |
| 2932 */ | |
| 2933 function arrayFilter(array, predicate) { | |
| 2934 var index = -1, | |
| 2935 length = array.length, | |
| 2936 resIndex = -1, | |
| 2937 result = []; | |
| 2938 | |
| 2939 while (++index < length) { | |
| 2940 var value = array[index]; | |
| 2941 if (predicate(value, index, array)) { | |
| 2942 result[++resIndex] = value; | |
| 2943 } | |
| 2944 } | |
| 2945 return result; | |
| 2946 } | |
| 2947 | |
| 2948 /** | |
| 2949 * A specialized version of `_.map` for arrays without support for callback | |
| 2950 * shorthands and `this` binding. | |
| 2951 * | |
| 2952 * @private | |
| 2953 * @param {Array} array The array to iterate over. | |
| 2954 * @param {Function} iteratee The function invoked per iteration. | |
| 2955 * @returns {Array} Returns the new mapped array. | |
| 2956 */ | |
| 2957 function arrayMap(array, iteratee) { | |
| 2958 var index = -1, | |
| 2959 length = array.length, | |
| 2960 result = Array(length); | |
| 2961 | |
| 2962 while (++index < length) { | |
| 2963 result[index] = iteratee(array[index], index, array); | |
| 2964 } | |
| 2965 return result; | |
| 2966 } | |
| 2967 | |
| 2968 /** | |
| 2969 * A specialized version of `_.max` for arrays without support for iteratees. | |
| 2970 * | |
| 2971 * @private | |
| 2972 * @param {Array} array The array to iterate over. | |
| 2973 * @returns {*} Returns the maximum value. | |
| 2974 */ | |
| 2975 function arrayMax(array) { | |
| 2976 var index = -1, | |
| 2977 length = array.length, | |
| 2978 result = NEGATIVE_INFINITY; | |
| 2979 | |
| 2980 while (++index < length) { | |
| 2981 var value = array[index]; | |
| 2982 if (value > result) { | |
| 2983 result = value; | |
| 2984 } | |
| 2985 } | |
| 2986 return result; | |
| 2987 } | |
| 2988 | |
| 2989 /** | |
| 2990 * A specialized version of `_.min` for arrays without support for iteratees. | |
| 2991 * | |
| 2992 * @private | |
| 2993 * @param {Array} array The array to iterate over. | |
| 2994 * @returns {*} Returns the minimum value. | |
| 2995 */ | |
| 2996 function arrayMin(array) { | |
| 2997 var index = -1, | |
| 2998 length = array.length, | |
| 2999 result = POSITIVE_INFINITY; | |
| 3000 | |
| 3001 while (++index < length) { | |
| 3002 var value = array[index]; | |
| 3003 if (value < result) { | |
| 3004 result = value; | |
| 3005 } | |
| 3006 } | |
| 3007 return result; | |
| 3008 } | |
| 3009 | |
| 3010 /** | |
| 3011 * A specialized version of `_.reduce` for arrays without support for callback | |
| 3012 * shorthands and `this` binding. | |
| 3013 * | |
| 3014 * @private | |
| 3015 * @param {Array} array The array to iterate over. | |
| 3016 * @param {Function} iteratee The function invoked per iteration. | |
| 3017 * @param {*} [accumulator] The initial value. | |
| 3018 * @param {boolean} [initFromArray] Specify using the first element of `array` | |
| 3019 * as the initial value. | |
| 3020 * @returns {*} Returns the accumulated value. | |
| 3021 */ | |
| 3022 function arrayReduce(array, iteratee, accumulator, initFromArray) { | |
| 3023 var index = -1, | |
| 3024 length = array.length; | |
| 3025 | |
| 3026 if (initFromArray && length) { | |
| 3027 accumulator = array[++index]; | |
| 3028 } | |
| 3029 while (++index < length) { | |
| 3030 accumulator = iteratee(accumulator, array[index], index, array); | |
| 3031 } | |
| 3032 return accumulator; | |
| 3033 } | |
| 3034 | |
| 3035 /** | |
| 3036 * A specialized version of `_.reduceRight` for arrays without support for | |
| 3037 * callback shorthands and `this` binding. | |
| 3038 * | |
| 3039 * @private | |
| 3040 * @param {Array} array The array to iterate over. | |
| 3041 * @param {Function} iteratee The function invoked per iteration. | |
| 3042 * @param {*} [accumulator] The initial value. | |
| 3043 * @param {boolean} [initFromArray] Specify using the last element of `array` | |
| 3044 * as the initial value. | |
| 3045 * @returns {*} Returns the accumulated value. | |
| 3046 */ | |
| 3047 function arrayReduceRight(array, iteratee, accumulator, initFromArray) { | |
| 3048 var length = array.length; | |
| 3049 if (initFromArray && length) { | |
| 3050 accumulator = array[--length]; | |
| 3051 } | |
| 3052 while (length--) { | |
| 3053 accumulator = iteratee(accumulator, array[length], length, array); | |
| 3054 } | |
| 3055 return accumulator; | |
| 3056 } | |
| 3057 | |
| 3058 /** | |
| 3059 * A specialized version of `_.some` for arrays without support for callback | |
| 3060 * shorthands and `this` binding. | |
| 3061 * | |
| 3062 * @private | |
| 3063 * @param {Array} array The array to iterate over. | |
| 3064 * @param {Function} predicate The function invoked per iteration. | |
| 3065 * @returns {boolean} Returns `true` if any element passes the predicate check, | |
| 3066 * else `false`. | |
| 3067 */ | |
| 3068 function arraySome(array, predicate) { | |
| 3069 var index = -1, | |
| 3070 length = array.length; | |
| 3071 | |
| 3072 while (++index < length) { | |
| 3073 if (predicate(array[index], index, array)) { | |
| 3074 return true; | |
| 3075 } | |
| 3076 } | |
| 3077 return false; | |
| 3078 } | |
| 3079 | |
| 3080 /** | |
| 3081 * A specialized version of `_.sum` for arrays without support for iteratees. | |
| 3082 * | |
| 3083 * @private | |
| 3084 * @param {Array} array The array to iterate over. | |
| 3085 * @returns {number} Returns the sum. | |
| 3086 */ | |
| 3087 function arraySum(array) { | |
| 3088 var length = array.length, | |
| 3089 result = 0; | |
| 3090 | |
| 3091 while (length--) { | |
| 3092 result += +array[length] || 0; | |
| 3093 } | |
| 3094 return result; | |
| 3095 } | |
| 3096 | |
| 3097 /** | |
| 3098 * Used by `_.defaults` to customize its `_.assign` use. | |
| 3099 * | |
| 3100 * @private | |
| 3101 * @param {*} objectValue The destination object property value. | |
| 3102 * @param {*} sourceValue The source object property value. | |
| 3103 * @returns {*} Returns the value to assign to the destination object. | |
| 3104 */ | |
| 3105 function assignDefaults(objectValue, sourceValue) { | |
| 3106 return objectValue === undefined ? sourceValue : objectValue; | |
| 3107 } | |
| 3108 | |
| 3109 /** | |
| 3110 * Used by `_.template` to customize its `_.assign` use. | |
| 3111 * | |
| 3112 * **Note:** This function is like `assignDefaults` except that it ignores | |
| 3113 * inherited property values when checking if a property is `undefined`. | |
| 3114 * | |
| 3115 * @private | |
| 3116 * @param {*} objectValue The destination object property value. | |
| 3117 * @param {*} sourceValue The source object property value. | |
| 3118 * @param {string} key The key associated with the object and source values. | |
| 3119 * @param {Object} object The destination object. | |
| 3120 * @returns {*} Returns the value to assign to the destination object. | |
| 3121 */ | |
| 3122 function assignOwnDefaults(objectValue, sourceValue, key, object) { | |
| 3123 return (objectValue === undefined || !hasOwnProperty.call(object, key)) | |
| 3124 ? sourceValue | |
| 3125 : objectValue; | |
| 3126 } | |
| 3127 | |
| 3128 /** | |
| 3129 * A specialized version of `_.assign` for customizing assigned values without | |
| 3130 * support for argument juggling, multiple sources, and `this` binding `customizer` | |
| 3131 * functions. | |
| 3132 * | |
| 3133 * @private | |
| 3134 * @param {Object} object The destination object. | |
| 3135 * @param {Object} source The source object. | |
| 3136 * @param {Function} customizer The function to customize assigned values. | |
| 3137 * @returns {Object} Returns `object`. | |
| 3138 */ | |
| 3139 function assignWith(object, source, customizer) { | |
| 3140 var props = keys(source); | |
| 3141 push.apply(props, getSymbols(source)); | |
| 3142 | |
| 3143 var index = -1, | |
| 3144 length = props.length; | |
| 3145 | |
| 3146 while (++index < length) { | |
| 3147 var key = props[index], | |
| 3148 value = object[key], | |
| 3149 result = customizer(value, source[key], key, object, source); | |
| 3150 | |
| 3151 if ((result === result ? (result !== value) : (value === value)) || | |
| 3152 (value === undefined && !(key in object))) { | |
| 3153 object[key] = result; | |
| 3154 } | |
| 3155 } | |
| 3156 return object; | |
| 3157 } | |
| 3158 | |
| 3159 /** | |
| 3160 * The base implementation of `_.assign` without support for argument juggling, | |
| 3161 * multiple sources, and `customizer` functions. | |
| 3162 * | |
| 3163 * @private | |
| 3164 * @param {Object} object The destination object. | |
| 3165 * @param {Object} source The source object. | |
| 3166 * @returns {Object} Returns `object`. | |
| 3167 */ | |
| 3168 var baseAssign = nativeAssign || function(object, source) { | |
| 3169 return source == null | |
| 3170 ? object | |
| 3171 : baseCopy(source, getSymbols(source), baseCopy(source, keys(source), object)); | |
| 3172 }; | |
| 3173 | |
| 3174 /** | |
| 3175 * The base implementation of `_.at` without support for string collections | |
| 3176 * and individual key arguments. | |
| 3177 * | |
| 3178 * @private | |
| 3179 * @param {Array|Object} collection The collection to iterate over. | |
| 3180 * @param {number[]|string[]} props The property names or indexes of elements to pick. | |
| 3181 * @returns {Array} Returns the new array of picked elements. | |
| 3182 */ | |
| 3183 function baseAt(collection, props) { | |
| 3184 var index = -1, | |
| 3185 length = collection.length, | |
| 3186 isArr = isLength(length), | |
| 3187 propsLength = props.length, | |
| 3188 result = Array(propsLength); | |
| 3189 | |
| 3190 while(++index < propsLength) { | |
| 3191 var key = props[index]; | |
| 3192 if (isArr) { | |
| 3193 result[index] = isIndex(key, length) ? collection[key] : undefined; | |
| 3194 } else { | |
| 3195 result[index] = collection[key]; | |
| 3196 } | |
| 3197 } | |
| 3198 return result; | |
| 3199 } | |
| 3200 | |
| 3201 /** | |
| 3202 * Copies properties of `source` to `object`. | |
| 3203 * | |
| 3204 * @private | |
| 3205 * @param {Object} source The object to copy properties from. | |
| 3206 * @param {Array} props The property names to copy. | |
| 3207 * @param {Object} [object={}] The object to copy properties to. | |
| 3208 * @returns {Object} Returns `object`. | |
| 3209 */ | |
| 3210 function baseCopy(source, props, object) { | |
| 3211 object || (object = {}); | |
| 3212 | |
| 3213 var index = -1, | |
| 3214 length = props.length; | |
| 3215 | |
| 3216 while (++index < length) { | |
| 3217 var key = props[index]; | |
| 3218 object[key] = source[key]; | |
| 3219 } | |
| 3220 return object; | |
| 3221 } | |
| 3222 | |
| 3223 /** | |
| 3224 * The base implementation of `_.callback` which supports specifying the | |
| 3225 * number of arguments to provide to `func`. | |
| 3226 * | |
| 3227 * @private | |
| 3228 * @param {*} [func=_.identity] The value to convert to a callback. | |
| 3229 * @param {*} [thisArg] The `this` binding of `func`. | |
| 3230 * @param {number} [argCount] The number of arguments to provide to `func`. | |
| 3231 * @returns {Function} Returns the callback. | |
| 3232 */ | |
| 3233 function baseCallback(func, thisArg, argCount) { | |
| 3234 var type = typeof func; | |
| 3235 if (type == 'function') { | |
| 3236 return thisArg === undefined | |
| 3237 ? func | |
| 3238 : bindCallback(func, thisArg, argCount); | |
| 3239 } | |
| 3240 if (func == null) { | |
| 3241 return identity; | |
| 3242 } | |
| 3243 if (type == 'object') { | |
| 3244 return baseMatches(func); | |
| 3245 } | |
| 3246 return thisArg === undefined | |
| 3247 ? property(func) | |
| 3248 : baseMatchesProperty(func, thisArg); | |
| 3249 } | |
| 3250 | |
| 3251 /** | |
| 3252 * The base implementation of `_.clone` without support for argument juggling | |
| 3253 * and `this` binding `customizer` functions. | |
| 3254 * | |
| 3255 * @private | |
| 3256 * @param {*} value The value to clone. | |
| 3257 * @param {boolean} [isDeep] Specify a deep clone. | |
| 3258 * @param {Function} [customizer] The function to customize cloning values. | |
| 3259 * @param {string} [key] The key of `value`. | |
| 3260 * @param {Object} [object] The object `value` belongs to. | |
| 3261 * @param {Array} [stackA=[]] Tracks traversed source objects. | |
| 3262 * @param {Array} [stackB=[]] Associates clones with source counterparts. | |
| 3263 * @returns {*} Returns the cloned value. | |
| 3264 */ | |
| 3265 function baseClone(value, isDeep, customizer, key, object, stackA, stackB) { | |
| 3266 var result; | |
| 3267 if (customizer) { | |
| 3268 result = object ? customizer(value, key, object) : customizer(value); | |
| 3269 } | |
| 3270 if (result !== undefined) { | |
| 3271 return result; | |
| 3272 } | |
| 3273 if (!isObject(value)) { | |
| 3274 return value; | |
| 3275 } | |
| 3276 var isArr = isArray(value); | |
| 3277 if (isArr) { | |
| 3278 result = initCloneArray(value); | |
| 3279 if (!isDeep) { | |
| 3280 return arrayCopy(value, result); | |
| 3281 } | |
| 3282 } else { | |
| 3283 var tag = objToString.call(value), | |
| 3284 isFunc = tag == funcTag; | |
| 3285 | |
| 3286 if (tag == objectTag || tag == argsTag || (isFunc && !object)) { | |
| 3287 result = initCloneObject(isFunc ? {} : value); | |
| 3288 if (!isDeep) { | |
| 3289 return baseAssign(result, value); | |
| 3290 } | |
| 3291 } else { | |
| 3292 return cloneableTags[tag] | |
| 3293 ? initCloneByTag(value, tag, isDeep) | |
| 3294 : (object ? value : {}); | |
| 3295 } | |
| 3296 } | |
| 3297 // Check for circular references and return corresponding clone. | |
| 3298 stackA || (stackA = []); | |
| 3299 stackB || (stackB = []); | |
| 3300 | |
| 3301 var length = stackA.length; | |
| 3302 while (length--) { | |
| 3303 if (stackA[length] == value) { | |
| 3304 return stackB[length]; | |
| 3305 } | |
| 3306 } | |
| 3307 // Add the source value to the stack of traversed objects and associate it with its clone. | |
| 3308 stackA.push(value); | |
| 3309 stackB.push(result); | |
| 3310 | |
| 3311 // Recursively populate clone (susceptible to call stack limits). | |
| 3312 (isArr ? arrayEach : baseForOwn)(value, function(subValue, key) { | |
| 3313 result[key] = baseClone(subValue, isDeep, customizer, key, value, stackA, stackB); | |
| 3314 }); | |
| 3315 return result; | |
| 3316 } | |
| 3317 | |
| 3318 /** | |
| 3319 * The base implementation of `_.create` without support for assigning | |
| 3320 * properties to the created object. | |
| 3321 * | |
| 3322 * @private | |
| 3323 * @param {Object} prototype The object to inherit from. | |
| 3324 * @returns {Object} Returns the new object. | |
| 3325 */ | |
| 3326 var baseCreate = (function() { | |
| 3327 function Object() {} | |
| 3328 return function(prototype) { | |
| 3329 if (isObject(prototype)) { | |
| 3330 Object.prototype = prototype; | |
| 3331 var result = new Object; | |
| 3332 Object.prototype = null; | |
| 3333 } | |
| 3334 return result || context.Object(); | |
| 3335 }; | |
| 3336 }()); | |
| 3337 | |
| 3338 /** | |
| 3339 * The base implementation of `_.delay` and `_.defer` which accepts an index | |
| 3340 * of where to slice the arguments to provide to `func`. | |
| 3341 * | |
| 3342 * @private | |
| 3343 * @param {Function} func The function to delay. | |
| 3344 * @param {number} wait The number of milliseconds to delay invocation. | |
| 3345 * @param {Object} args The arguments provide to `func`. | |
| 3346 * @returns {number} Returns the timer id. | |
| 3347 */ | |
| 3348 function baseDelay(func, wait, args) { | |
| 3349 if (typeof func != 'function') { | |
| 3350 throw new TypeError(FUNC_ERROR_TEXT); | |
| 3351 } | |
| 3352 return setTimeout(function() { func.apply(undefined, args); }, wait); | |
| 3353 } | |
| 3354 | |
| 3355 /** | |
| 3356 * The base implementation of `_.difference` which accepts a single array | |
| 3357 * of values to exclude. | |
| 3358 * | |
| 3359 * @private | |
| 3360 * @param {Array} array The array to inspect. | |
| 3361 * @param {Array} values The values to exclude. | |
| 3362 * @returns {Array} Returns the new array of filtered values. | |
| 3363 */ | |
| 3364 function baseDifference(array, values) { | |
| 3365 var length = array ? array.length : 0, | |
| 3366 result = []; | |
| 3367 | |
| 3368 if (!length) { | |
| 3369 return result; | |
| 3370 } | |
| 3371 var index = -1, | |
| 3372 indexOf = getIndexOf(), | |
| 3373 isCommon = indexOf == baseIndexOf, | |
| 3374 cache = (isCommon && values.length >= 200) ? createCache(values) : null, | |
| 3375 valuesLength = values.length; | |
| 3376 | |
| 3377 if (cache) { | |
| 3378 indexOf = cacheIndexOf; | |
| 3379 isCommon = false; | |
| 3380 values = cache; | |
| 3381 } | |
| 3382 outer: | |
| 3383 while (++index < length) { | |
| 3384 var value = array[index]; | |
| 3385 | |
| 3386 if (isCommon && value === value) { | |
| 3387 var valuesIndex = valuesLength; | |
| 3388 while (valuesIndex--) { | |
| 3389 if (values[valuesIndex] === value) { | |
| 3390 continue outer; | |
| 3391 } | |
| 3392 } | |
| 3393 result.push(value); | |
| 3394 } | |
| 3395 else if (indexOf(values, value, 0) < 0) { | |
| 3396 result.push(value); | |
| 3397 } | |
| 3398 } | |
| 3399 return result; | |
| 3400 } | |
| 3401 | |
| 3402 /** | |
| 3403 * The base implementation of `_.forEach` without support for callback | |
| 3404 * shorthands and `this` binding. | |
| 3405 * | |
| 3406 * @private | |
| 3407 * @param {Array|Object|string} collection The collection to iterate over. | |
| 3408 * @param {Function} iteratee The function invoked per iteration. | |
| 3409 * @returns {Array|Object|string} Returns `collection`. | |
| 3410 */ | |
| 3411 var baseEach = createBaseEach(baseForOwn); | |
| 3412 | |
| 3413 /** | |
| 3414 * The base implementation of `_.forEachRight` without support for callback | |
| 3415 * shorthands and `this` binding. | |
| 3416 * | |
| 3417 * @private | |
| 3418 * @param {Array|Object|string} collection The collection to iterate over. | |
| 3419 * @param {Function} iteratee The function invoked per iteration. | |
| 3420 * @returns {Array|Object|string} Returns `collection`. | |
| 3421 */ | |
| 3422 var baseEachRight = createBaseEach(baseForOwnRight, true); | |
| 3423 | |
| 3424 /** | |
| 3425 * The base implementation of `_.every` without support for callback | |
| 3426 * shorthands and `this` binding. | |
| 3427 * | |
| 3428 * @private | |
| 3429 * @param {Array|Object|string} collection The collection to iterate over. | |
| 3430 * @param {Function} predicate The function invoked per iteration. | |
| 3431 * @returns {boolean} Returns `true` if all elements pass the predicate check, | |
| 3432 * else `false` | |
| 3433 */ | |
| 3434 function baseEvery(collection, predicate) { | |
| 3435 var result = true; | |
| 3436 baseEach(collection, function(value, index, collection) { | |
| 3437 result = !!predicate(value, index, collection); | |
| 3438 return result; | |
| 3439 }); | |
| 3440 return result; | |
| 3441 } | |
| 3442 | |
| 3443 /** | |
| 3444 * The base implementation of `_.fill` without an iteratee call guard. | |
| 3445 * | |
| 3446 * @private | |
| 3447 * @param {Array} array The array to fill. | |
| 3448 * @param {*} value The value to fill `array` with. | |
| 3449 * @param {number} [start=0] The start position. | |
| 3450 * @param {number} [end=array.length] The end position. | |
| 3451 * @returns {Array} Returns `array`. | |
| 3452 */ | |
| 3453 function baseFill(array, value, start, end) { | |
| 3454 var length = array.length; | |
| 3455 | |
| 3456 start = start == null ? 0 : (+start || 0); | |
| 3457 if (start < 0) { | |
| 3458 start = -start > length ? 0 : (length + start); | |
| 3459 } | |
| 3460 end = (end === undefined || end > length) ? length : (+end || 0); | |
| 3461 if (end < 0) { | |
| 3462 end += length; | |
| 3463 } | |
| 3464 length = start > end ? 0 : (end >>> 0); | |
| 3465 start >>>= 0; | |
| 3466 | |
| 3467 while (start < length) { | |
| 3468 array[start++] = value; | |
| 3469 } | |
| 3470 return array; | |
| 3471 } | |
| 3472 | |
| 3473 /** | |
| 3474 * The base implementation of `_.filter` without support for callback | |
| 3475 * shorthands and `this` binding. | |
| 3476 * | |
| 3477 * @private | |
| 3478 * @param {Array|Object|string} collection The collection to iterate over. | |
| 3479 * @param {Function} predicate The function invoked per iteration. | |
| 3480 * @returns {Array} Returns the new filtered array. | |
| 3481 */ | |
| 3482 function baseFilter(collection, predicate) { | |
| 3483 var result = []; | |
| 3484 baseEach(collection, function(value, index, collection) { | |
| 3485 if (predicate(value, index, collection)) { | |
| 3486 result.push(value); | |
| 3487 } | |
| 3488 }); | |
| 3489 return result; | |
| 3490 } | |
| 3491 | |
| 3492 /** | |
| 3493 * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`, | |
| 3494 * without support for callback shorthands and `this` binding, which iterates | |
| 3495 * over `collection` using the provided `eachFunc`. | |
| 3496 * | |
| 3497 * @private | |
| 3498 * @param {Array|Object|string} collection The collection to search. | |
| 3499 * @param {Function} predicate The function invoked per iteration. | |
| 3500 * @param {Function} eachFunc The function to iterate over `collection`. | |
| 3501 * @param {boolean} [retKey] Specify returning the key of the found element | |
| 3502 * instead of the element itself. | |
| 3503 * @returns {*} Returns the found element or its key, else `undefined`. | |
| 3504 */ | |
| 3505 function baseFind(collection, predicate, eachFunc, retKey) { | |
| 3506 var result; | |
| 3507 eachFunc(collection, function(value, key, collection) { | |
| 3508 if (predicate(value, key, collection)) { | |
| 3509 result = retKey ? key : value; | |
| 3510 return false; | |
| 3511 } | |
| 3512 }); | |
| 3513 return result; | |
| 3514 } | |
| 3515 | |
| 3516 /** | |
| 3517 * The base implementation of `_.flatten` with added support for restricting | |
| 3518 * flattening and specifying the start index. | |
| 3519 * | |
| 3520 * @private | |
| 3521 * @param {Array} array The array to flatten. | |
| 3522 * @param {boolean} isDeep Specify a deep flatten. | |
| 3523 * @param {boolean} isStrict Restrict flattening to arrays and `arguments` objects. | |
| 3524 * @returns {Array} Returns the new flattened array. | |
| 3525 */ | |
| 3526 function baseFlatten(array, isDeep, isStrict) { | |
| 3527 var index = -1, | |
| 3528 length = array.length, | |
| 3529 resIndex = -1, | |
| 3530 result = []; | |
| 3531 | |
| 3532 while (++index < length) { | |
| 3533 var value = array[index]; | |
| 3534 | |
| 3535 if (isObjectLike(value) && isLength(value.length) && (isArray(value) || isArguments(value))) { | |
| 3536 if (isDeep) { | |
| 3537 // Recursively flatten arrays (susceptible to call stack limits). | |
| 3538 value = baseFlatten(value, isDeep, isStrict); | |
| 3539 } | |
| 3540 var valIndex = -1, | |
| 3541 valLength = value.length; | |
| 3542 | |
| 3543 result.length += valLength; | |
| 3544 while (++valIndex < valLength) { | |
| 3545 result[++resIndex] = value[valIndex]; | |
| 3546 } | |
| 3547 } else if (!isStrict) { | |
| 3548 result[++resIndex] = value; | |
| 3549 } | |
| 3550 } | |
| 3551 return result; | |
| 3552 } | |
| 3553 | |
| 3554 /** | |
| 3555 * The base implementation of `baseForIn` and `baseForOwn` which iterates | |
| 3556 * over `object` properties returned by `keysFunc` invoking `iteratee` for | |
| 3557 * each property. Iteratee functions may exit iteration early by explicitly | |
| 3558 * returning `false`. | |
| 3559 * | |
| 3560 * @private | |
| 3561 * @param {Object} object The object to iterate over. | |
| 3562 * @param {Function} iteratee The function invoked per iteration. | |
| 3563 * @param {Function} keysFunc The function to get the keys of `object`. | |
| 3564 * @returns {Object} Returns `object`. | |
| 3565 */ | |
| 3566 var baseFor = createBaseFor(); | |
| 3567 | |
| 3568 /** | |
| 3569 * This function is like `baseFor` except that it iterates over properties | |
| 3570 * in the opposite order. | |
| 3571 * | |
| 3572 * @private | |
| 3573 * @param {Object} object The object to iterate over. | |
| 3574 * @param {Function} iteratee The function invoked per iteration. | |
| 3575 * @param {Function} keysFunc The function to get the keys of `object`. | |
| 3576 * @returns {Object} Returns `object`. | |
| 3577 */ | |
| 3578 var baseForRight = createBaseFor(true); | |
| 3579 | |
| 3580 /** | |
| 3581 * The base implementation of `_.forIn` without support for callback | |
| 3582 * shorthands and `this` binding. | |
| 3583 * | |
| 3584 * @private | |
| 3585 * @param {Object} object The object to iterate over. | |
| 3586 * @param {Function} iteratee The function invoked per iteration. | |
| 3587 * @returns {Object} Returns `object`. | |
| 3588 */ | |
| 3589 function baseForIn(object, iteratee) { | |
| 3590 return baseFor(object, iteratee, keysIn); | |
| 3591 } | |
| 3592 | |
| 3593 /** | |
| 3594 * The base implementation of `_.forOwn` without support for callback | |
| 3595 * shorthands and `this` binding. | |
| 3596 * | |
| 3597 * @private | |
| 3598 * @param {Object} object The object to iterate over. | |
| 3599 * @param {Function} iteratee The function invoked per iteration. | |
| 3600 * @returns {Object} Returns `object`. | |
| 3601 */ | |
| 3602 function baseForOwn(object, iteratee) { | |
| 3603 return baseFor(object, iteratee, keys); | |
| 3604 } | |
| 3605 | |
| 3606 /** | |
| 3607 * The base implementation of `_.forOwnRight` without support for callback | |
| 3608 * shorthands and `this` binding. | |
| 3609 * | |
| 3610 * @private | |
| 3611 * @param {Object} object The object to iterate over. | |
| 3612 * @param {Function} iteratee The function invoked per iteration. | |
| 3613 * @returns {Object} Returns `object`. | |
| 3614 */ | |
| 3615 function baseForOwnRight(object, iteratee) { | |
| 3616 return baseForRight(object, iteratee, keys); | |
| 3617 } | |
| 3618 | |
| 3619 /** | |
| 3620 * The base implementation of `_.functions` which creates an array of | |
| 3621 * `object` function property names filtered from those provided. | |
| 3622 * | |
| 3623 * @private | |
| 3624 * @param {Object} object The object to inspect. | |
| 3625 * @param {Array} props The property names to filter. | |
| 3626 * @returns {Array} Returns the new array of filtered property names. | |
| 3627 */ | |
| 3628 function baseFunctions(object, props) { | |
| 3629 var index = -1, | |
| 3630 length = props.length, | |
| 3631 resIndex = -1, | |
| 3632 result = []; | |
| 3633 | |
| 3634 while (++index < length) { | |
| 3635 var key = props[index]; | |
| 3636 if (isFunction(object[key])) { | |
| 3637 result[++resIndex] = key; | |
| 3638 } | |
| 3639 } | |
| 3640 return result; | |
| 3641 } | |
| 3642 | |
| 3643 /** | |
| 3644 * The base implementation of `get` without support for string paths | |
| 3645 * and default values. | |
| 3646 * | |
| 3647 * @private | |
| 3648 * @param {Object} object The object to query. | |
| 3649 * @param {Array} path The path of the property to get. | |
| 3650 * @param {string} [pathKey] The key representation of path. | |
| 3651 * @returns {*} Returns the resolved value. | |
| 3652 */ | |
| 3653 function baseGet(object, path, pathKey) { | |
| 3654 if (object == null) { | |
| 3655 return; | |
| 3656 } | |
| 3657 if (pathKey !== undefined && pathKey in toObject(object)) { | |
| 3658 path = [pathKey]; | |
| 3659 } | |
| 3660 var index = -1, | |
| 3661 length = path.length; | |
| 3662 | |
| 3663 while (object != null && ++index < length) { | |
| 3664 var result = object = object[path[index]]; | |
| 3665 } | |
| 3666 return result; | |
| 3667 } | |
| 3668 | |
| 3669 /** | |
| 3670 * The base implementation of `_.isEqual` without support for `this` binding | |
| 3671 * `customizer` functions. | |
| 3672 * | |
| 3673 * @private | |
| 3674 * @param {*} value The value to compare. | |
| 3675 * @param {*} other The other value to compare. | |
| 3676 * @param {Function} [customizer] The function to customize comparing values. | |
| 3677 * @param {boolean} [isLoose] Specify performing partial comparisons. | |
| 3678 * @param {Array} [stackA] Tracks traversed `value` objects. | |
| 3679 * @param {Array} [stackB] Tracks traversed `other` objects. | |
| 3680 * @returns {boolean} Returns `true` if the values are equivalent, else `false`. | |
| 3681 */ | |
| 3682 function baseIsEqual(value, other, customizer, isLoose, stackA, stackB) { | |
| 3683 // Exit early for identical values. | |
| 3684 if (value === other) { | |
| 3685 // Treat `+0` vs. `-0` as not equal. | |
| 3686 return value !== 0 || (1 / value == 1 / other); | |
| 3687 } | |
| 3688 var valType = typeof value, | |
| 3689 othType = typeof other; | |
| 3690 | |
| 3691 // Exit early for unlike primitive values. | |
| 3692 if ((valType != 'function' && valType != 'object' && othType != 'function' && othType != 'object') || | |
| 3693 value == null || other == null) { | |
| 3694 // Return `false` unless both values are `NaN`. | |
| 3695 return value !== value && other !== other; | |
| 3696 } | |
| 3697 return baseIsEqualDeep(value, other, baseIsEqual, customizer, isLoose, stackA, stackB); | |
| 3698 } | |
| 3699 | |
| 3700 /** | |
| 3701 * A specialized version of `baseIsEqual` for arrays and objects which performs | |
| 3702 * deep comparisons and tracks traversed objects enabling objects with circular | |
| 3703 * references to be compared. | |
| 3704 * | |
| 3705 * @private | |
| 3706 * @param {Object} object The object to compare. | |
| 3707 * @param {Object} other The other object to compare. | |
| 3708 * @param {Function} equalFunc The function to determine equivalents of values. | |
| 3709 * @param {Function} [customizer] The function to customize comparing objects. | |
| 3710 * @param {boolean} [isLoose] Specify performing partial comparisons. | |
| 3711 * @param {Array} [stackA=[]] Tracks traversed `value` objects. | |
| 3712 * @param {Array} [stackB=[]] Tracks traversed `other` objects. | |
| 3713 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. | |
| 3714 */ | |
| 3715 function baseIsEqualDeep(object, other, equalFunc, customizer, isLoose, stackA, stackB) { | |
| 3716 var objIsArr = isArray(object), | |
| 3717 othIsArr = isArray(other), | |
| 3718 objTag = arrayTag, | |
| 3719 othTag = arrayTag; | |
| 3720 | |
| 3721 if (!objIsArr) { | |
| 3722 objTag = objToString.call(object); | |
| 3723 if (objTag == argsTag) { | |
| 3724 objTag = objectTag; | |
| 3725 } else if (objTag != objectTag) { | |
| 3726 objIsArr = isTypedArray(object); | |
| 3727 } | |
| 3728 } | |
| 3729 if (!othIsArr) { | |
| 3730 othTag = objToString.call(other); | |
| 3731 if (othTag == argsTag) { | |
| 3732 othTag = objectTag; | |
| 3733 } else if (othTag != objectTag) { | |
| 3734 othIsArr = isTypedArray(other); | |
| 3735 } | |
| 3736 } | |
| 3737 var objIsObj = objTag == objectTag, | |
| 3738 othIsObj = othTag == objectTag, | |
| 3739 isSameTag = objTag == othTag; | |
| 3740 | |
| 3741 if (isSameTag && !(objIsArr || objIsObj)) { | |
| 3742 return equalByTag(object, other, objTag); | |
| 3743 } | |
| 3744 if (!isLoose) { | |
| 3745 var valWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), | |
| 3746 othWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); | |
| 3747 | |
| 3748 if (valWrapped || othWrapped) { | |
| 3749 return equalFunc(valWrapped ? object.value() : object, othWrapped ? other.value() : other, customizer, isLoose, stackA, stackB); | |
| 3750 } | |
| 3751 } | |
| 3752 if (!isSameTag) { | |
| 3753 return false; | |
| 3754 } | |
| 3755 // Assume cyclic values are equal. | |
| 3756 // For more information on detecting circular references see https://es5.github.io/#JO. | |
| 3757 stackA || (stackA = []); | |
| 3758 stackB || (stackB = []); | |
| 3759 | |
| 3760 var length = stackA.length; | |
| 3761 while (length--) { | |
| 3762 if (stackA[length] == object) { | |
| 3763 return stackB[length] == other; | |
| 3764 } | |
| 3765 } | |
| 3766 // Add `object` and `other` to the stack of traversed objects. | |
| 3767 stackA.push(object); | |
| 3768 stackB.push(other); | |
| 3769 | |
| 3770 var result = (objIsArr ? equalArrays : equalObjects)(object, other, equalFunc, customizer, isLoose, stackA, stackB); | |
| 3771 | |
| 3772 stackA.pop(); | |
| 3773 stackB.pop(); | |
| 3774 | |
| 3775 return result; | |
| 3776 } | |
| 3777 | |
| 3778 /** | |
| 3779 * The base implementation of `_.isMatch` without support for callback | |
| 3780 * shorthands and `this` binding. | |
| 3781 * | |
| 3782 * @private | |
| 3783 * @param {Object} object The object to inspect. | |
| 3784 * @param {Array} props The source property names to match. | |
| 3785 * @param {Array} values The source values to match. | |
| 3786 * @param {Array} strictCompareFlags Strict comparison flags for source values. | |
| 3787 * @param {Function} [customizer] The function to customize comparing objects. | |
| 3788 * @returns {boolean} Returns `true` if `object` is a match, else `false`. | |
| 3789 */ | |
| 3790 function baseIsMatch(object, props, values, strictCompareFlags, customizer) { | |
| 3791 var index = -1, | |
| 3792 length = props.length, | |
| 3793 noCustomizer = !customizer; | |
| 3794 | |
| 3795 while (++index < length) { | |
| 3796 if ((noCustomizer && strictCompareFlags[index]) | |
| 3797 ? values[index] !== object[props[index]] | |
| 3798 : !(props[index] in object) | |
| 3799 ) { | |
| 3800 return false; | |
| 3801 } | |
| 3802 } | |
| 3803 index = -1; | |
| 3804 while (++index < length) { | |
| 3805 var key = props[index], | |
| 3806 objValue = object[key], | |
| 3807 srcValue = values[index]; | |
| 3808 | |
| 3809 if (noCustomizer && strictCompareFlags[index]) { | |
| 3810 var result = objValue !== undefined || (key in object); | |
| 3811 } else { | |
| 3812 result = customizer ? customizer(objValue, srcValue, key) : undefined; | |
| 3813 if (result === undefined) { | |
| 3814 result = baseIsEqual(srcValue, objValue, customizer, true); | |
| 3815 } | |
| 3816 } | |
| 3817 if (!result) { | |
| 3818 return false; | |
| 3819 } | |
| 3820 } | |
| 3821 return true; | |
| 3822 } | |
| 3823 | |
| 3824 /** | |
| 3825 * The base implementation of `_.map` without support for callback shorthands | |
| 3826 * and `this` binding. | |
| 3827 * | |
| 3828 * @private | |
| 3829 * @param {Array|Object|string} collection The collection to iterate over. | |
| 3830 * @param {Function} iteratee The function invoked per iteration. | |
| 3831 * @returns {Array} Returns the new mapped array. | |
| 3832 */ | |
| 3833 function baseMap(collection, iteratee) { | |
| 3834 var index = -1, | |
| 3835 length = getLength(collection), | |
| 3836 result = isLength(length) ? Array(length) : []; | |
| 3837 | |
| 3838 baseEach(collection, function(value, key, collection) { | |
| 3839 result[++index] = iteratee(value, key, collection); | |
| 3840 }); | |
| 3841 return result; | |
| 3842 } | |
| 3843 | |
| 3844 /** | |
| 3845 * The base implementation of `_.matches` which does not clone `source`. | |
| 3846 * | |
| 3847 * @private | |
| 3848 * @param {Object} source The object of property values to match. | |
| 3849 * @returns {Function} Returns the new function. | |
| 3850 */ | |
| 3851 function baseMatches(source) { | |
| 3852 var props = keys(source), | |
| 3853 length = props.length; | |
| 3854 | |
| 3855 if (!length) { | |
| 3856 return constant(true); | |
| 3857 } | |
| 3858 if (length == 1) { | |
| 3859 var key = props[0], | |
| 3860 value = source[key]; | |
| 3861 | |
| 3862 if (isStrictComparable(value)) { | |
| 3863 return function(object) { | |
| 3864 if (object == null) { | |
| 3865 return false; | |
| 3866 } | |
| 3867 return object[key] === value && (value !== undefined || (key in toObject(object))); | |
| 3868 }; | |
| 3869 } | |
| 3870 } | |
| 3871 var values = Array(length), | |
| 3872 strictCompareFlags = Array(length); | |
| 3873 | |
| 3874 while (length--) { | |
| 3875 value = source[props[length]]; | |
| 3876 values[length] = value; | |
| 3877 strictCompareFlags[length] = isStrictComparable(value); | |
| 3878 } | |
| 3879 return function(object) { | |
| 3880 return object != null && baseIsMatch(toObject(object), props, values, strictCompareFlags); | |
| 3881 }; | |
| 3882 } | |
| 3883 | |
| 3884 /** | |
| 3885 * The base implementation of `_.matchesProperty` which does not which does | |
| 3886 * not clone `value`. | |
| 3887 * | |
| 3888 * @private | |
| 3889 * @param {string} path The path of the property to get. | |
| 3890 * @param {*} value The value to compare. | |
| 3891 * @returns {Function} Returns the new function. | |
| 3892 */ | |
| 3893 function baseMatchesProperty(path, value) { | |
| 3894 var isArr = isArray(path), | |
| 3895 isCommon = isKey(path) && isStrictComparable(value), | |
| 3896 pathKey = (path + ''); | |
| 3897 | |
| 3898 path = toPath(path); | |
| 3899 return function(object) { | |
| 3900 if (object == null) { | |
| 3901 return false; | |
| 3902 } | |
| 3903 var key = pathKey; | |
| 3904 object = toObject(object); | |
| 3905 if ((isArr || !isCommon) && !(key in object)) { | |
| 3906 object = path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1)); | |
| 3907 if (object == null) { | |
| 3908 return false; | |
| 3909 } | |
| 3910 key = last(path); | |
| 3911 object = toObject(object); | |
| 3912 } | |
| 3913 return object[key] === value | |
| 3914 ? (value !== undefined || (key in object)) | |
| 3915 : baseIsEqual(value, object[key], null, true); | |
| 3916 }; | |
| 3917 } | |
| 3918 | |
| 3919 /** | |
| 3920 * The base implementation of `_.merge` without support for argument juggling, | |
| 3921 * multiple sources, and `this` binding `customizer` functions. | |
| 3922 * | |
| 3923 * @private | |
| 3924 * @param {Object} object The destination object. | |
| 3925 * @param {Object} source The source object. | |
| 3926 * @param {Function} [customizer] The function to customize merging properties. | |
| 3927 * @param {Array} [stackA=[]] Tracks traversed source objects. | |
| 3928 * @param {Array} [stackB=[]] Associates values with source counterparts. | |
| 3929 * @returns {Object} Returns `object`. | |
| 3930 */ | |
| 3931 function baseMerge(object, source, customizer, stackA, stackB) { | |
| 3932 if (!isObject(object)) { | |
| 3933 return object; | |
| 3934 } | |
| 3935 var isSrcArr = isLength(source.length) && (isArray(source) || isTypedArray(source)); | |
| 3936 if (!isSrcArr) { | |
| 3937 var props = keys(source); | |
| 3938 push.apply(props, getSymbols(source)); | |
| 3939 } | |
| 3940 arrayEach(props || source, function(srcValue, key) { | |
| 3941 if (props) { | |
| 3942 key = srcValue; | |
| 3943 srcValue = source[key]; | |
| 3944 } | |
| 3945 if (isObjectLike(srcValue)) { | |
| 3946 stackA || (stackA = []); | |
| 3947 stackB || (stackB = []); | |
| 3948 baseMergeDeep(object, source, key, baseMerge, customizer, stackA, stackB); | |
| 3949 } | |
| 3950 else { | |
| 3951 var value = object[key], | |
| 3952 result = customizer ? customizer(value, srcValue, key, object, source) : undefined, | |
| 3953 isCommon = result === undefined; | |
| 3954 | |
| 3955 if (isCommon) { | |
| 3956 result = srcValue; | |
| 3957 } | |
| 3958 if ((isSrcArr || result !== undefined) && | |
| 3959 (isCommon || (result === result ? (result !== value) : (value === value)))) { | |
| 3960 object[key] = result; | |
| 3961 } | |
| 3962 } | |
| 3963 }); | |
| 3964 return object; | |
| 3965 } | |
| 3966 | |
| 3967 /** | |
| 3968 * A specialized version of `baseMerge` for arrays and objects which performs | |
| 3969 * deep merges and tracks traversed objects enabling objects with circular | |
| 3970 * references to be merged. | |
| 3971 * | |
| 3972 * @private | |
| 3973 * @param {Object} object The destination object. | |
| 3974 * @param {Object} source The source object. | |
| 3975 * @param {string} key The key of the value to merge. | |
| 3976 * @param {Function} mergeFunc The function to merge values. | |
| 3977 * @param {Function} [customizer] The function to customize merging properties. | |
| 3978 * @param {Array} [stackA=[]] Tracks traversed source objects. | |
| 3979 * @param {Array} [stackB=[]] Associates values with source counterparts. | |
| 3980 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. | |
| 3981 */ | |
| 3982 function baseMergeDeep(object, source, key, mergeFunc, customizer, stackA, stackB) { | |
| 3983 var length = stackA.length, | |
| 3984 srcValue = source[key]; | |
| 3985 | |
| 3986 while (length--) { | |
| 3987 if (stackA[length] == srcValue) { | |
| 3988 object[key] = stackB[length]; | |
| 3989 return; | |
| 3990 } | |
| 3991 } | |
| 3992 var value = object[key], | |
| 3993 result = customizer ? customizer(value, srcValue, key, object, source) : undefined, | |
| 3994 isCommon = result === undefined; | |
| 3995 | |
| 3996 if (isCommon) { | |
| 3997 result = srcValue; | |
| 3998 if (isLength(srcValue.length) && (isArray(srcValue) || isTypedArray(srcValue))) { | |
| 3999 result = isArray(value) | |
| 4000 ? value | |
| 4001 : (getLength(value) ? arrayCopy(value) : []); | |
| 4002 } | |
| 4003 else if (isPlainObject(srcValue) || isArguments(srcValue)) { | |
| 4004 result = isArguments(value) | |
| 4005 ? toPlainObject(value) | |
| 4006 : (isPlainObject(value) ? value : {}); | |
| 4007 } | |
| 4008 else { | |
| 4009 isCommon = false; | |
| 4010 } | |
| 4011 } | |
| 4012 // Add the source value to the stack of traversed objects and associate | |
| 4013 // it with its merged value. | |
| 4014 stackA.push(srcValue); | |
| 4015 stackB.push(result); | |
| 4016 | |
| 4017 if (isCommon) { | |
| 4018 // Recursively merge objects and arrays (susceptible to call stack limits). | |
| 4019 object[key] = mergeFunc(result, srcValue, customizer, stackA, stackB); | |
| 4020 } else if (result === result ? (result !== value) : (value === value)) { | |
| 4021 object[key] = result; | |
| 4022 } | |
| 4023 } | |
| 4024 | |
| 4025 /** | |
| 4026 * The base implementation of `_.property` without support for deep paths. | |
| 4027 * | |
| 4028 * @private | |
| 4029 * @param {string} key The key of the property to get. | |
| 4030 * @returns {Function} Returns the new function. | |
| 4031 */ | |
| 4032 function baseProperty(key) { | |
| 4033 return function(object) { | |
| 4034 return object == null ? undefined : object[key]; | |
| 4035 }; | |
| 4036 } | |
| 4037 | |
| 4038 /** | |
| 4039 * A specialized version of `baseProperty` which supports deep paths. | |
| 4040 * | |
| 4041 * @private | |
| 4042 * @param {Array|string} path The path of the property to get. | |
| 4043 * @returns {Function} Returns the new function. | |
| 4044 */ | |
| 4045 function basePropertyDeep(path) { | |
| 4046 var pathKey = (path + ''); | |
| 4047 path = toPath(path); | |
| 4048 return function(object) { | |
| 4049 return baseGet(object, path, pathKey); | |
| 4050 }; | |
| 4051 } | |
| 4052 | |
| 4053 /** | |
| 4054 * The base implementation of `_.pullAt` without support for individual | |
| 4055 * index arguments and capturing the removed elements. | |
| 4056 * | |
| 4057 * @private | |
| 4058 * @param {Array} array The array to modify. | |
| 4059 * @param {number[]} indexes The indexes of elements to remove. | |
| 4060 * @returns {Array} Returns `array`. | |
| 4061 */ | |
| 4062 function basePullAt(array, indexes) { | |
| 4063 var length = indexes.length; | |
| 4064 while (length--) { | |
| 4065 var index = parseFloat(indexes[length]); | |
| 4066 if (index != previous && isIndex(index)) { | |
| 4067 var previous = index; | |
| 4068 splice.call(array, index, 1); | |
| 4069 } | |
| 4070 } | |
| 4071 return array; | |
| 4072 } | |
| 4073 | |
| 4074 /** | |
| 4075 * The base implementation of `_.random` without support for argument juggling | |
| 4076 * and returning floating-point numbers. | |
| 4077 * | |
| 4078 * @private | |
| 4079 * @param {number} min The minimum possible value. | |
| 4080 * @param {number} max The maximum possible value. | |
| 4081 * @returns {number} Returns the random number. | |
| 4082 */ | |
| 4083 function baseRandom(min, max) { | |
| 4084 return min + floor(nativeRandom() * (max - min + 1)); | |
| 4085 } | |
| 4086 | |
| 4087 /** | |
| 4088 * The base implementation of `_.reduce` and `_.reduceRight` without support | |
| 4089 * for callback shorthands and `this` binding, which iterates over `collection` | |
| 4090 * using the provided `eachFunc`. | |
| 4091 * | |
| 4092 * @private | |
| 4093 * @param {Array|Object|string} collection The collection to iterate over. | |
| 4094 * @param {Function} iteratee The function invoked per iteration. | |
| 4095 * @param {*} accumulator The initial value. | |
| 4096 * @param {boolean} initFromCollection Specify using the first or last element | |
| 4097 * of `collection` as the initial value. | |
| 4098 * @param {Function} eachFunc The function to iterate over `collection`. | |
| 4099 * @returns {*} Returns the accumulated value. | |
| 4100 */ | |
| 4101 function baseReduce(collection, iteratee, accumulator, initFromCollection, eachFunc) { | |
| 4102 eachFunc(collection, function(value, index, collection) { | |
| 4103 accumulator = initFromCollection | |
| 4104 ? (initFromCollection = false, value) | |
| 4105 : iteratee(accumulator, value, index, collection); | |
| 4106 }); | |
| 4107 return accumulator; | |
| 4108 } | |
| 4109 | |
| 4110 /** | |
| 4111 * The base implementation of `setData` without support for hot loop detection. | |
| 4112 * | |
| 4113 * @private | |
| 4114 * @param {Function} func The function to associate metadata with. | |
| 4115 * @param {*} data The metadata. | |
| 4116 * @returns {Function} Returns `func`. | |
| 4117 */ | |
| 4118 var baseSetData = !metaMap ? identity : function(func, data) { | |
| 4119 metaMap.set(func, data); | |
| 4120 return func; | |
| 4121 }; | |
| 4122 | |
| 4123 /** | |
| 4124 * The base implementation of `_.slice` without an iteratee call guard. | |
| 4125 * | |
| 4126 * @private | |
| 4127 * @param {Array} array The array to slice. | |
| 4128 * @param {number} [start=0] The start position. | |
| 4129 * @param {number} [end=array.length] The end position. | |
| 4130 * @returns {Array} Returns the slice of `array`. | |
| 4131 */ | |
| 4132 function baseSlice(array, start, end) { | |
| 4133 var index = -1, | |
| 4134 length = array.length; | |
| 4135 | |
| 4136 start = start == null ? 0 : (+start || 0); | |
| 4137 if (start < 0) { | |
| 4138 start = -start > length ? 0 : (length + start); | |
| 4139 } | |
| 4140 end = (end === undefined || end > length) ? length : (+end || 0); | |
| 4141 if (end < 0) { | |
| 4142 end += length; | |
| 4143 } | |
| 4144 length = start > end ? 0 : ((end - start) >>> 0); | |
| 4145 start >>>= 0; | |
| 4146 | |
| 4147 var result = Array(length); | |
| 4148 while (++index < length) { | |
| 4149 result[index] = array[index + start]; | |
| 4150 } | |
| 4151 return result; | |
| 4152 } | |
| 4153 | |
| 4154 /** | |
| 4155 * The base implementation of `_.some` without support for callback shorthands | |
| 4156 * and `this` binding. | |
| 4157 * | |
| 4158 * @private | |
| 4159 * @param {Array|Object|string} collection The collection to iterate over. | |
| 4160 * @param {Function} predicate The function invoked per iteration. | |
| 4161 * @returns {boolean} Returns `true` if any element passes the predicate check, | |
| 4162 * else `false`. | |
| 4163 */ | |
| 4164 function baseSome(collection, predicate) { | |
| 4165 var result; | |
| 4166 | |
| 4167 baseEach(collection, function(value, index, collection) { | |
| 4168 result = predicate(value, index, collection); | |
| 4169 return !result; | |
| 4170 }); | |
| 4171 return !!result; | |
| 4172 } | |
| 4173 | |
| 4174 /** | |
| 4175 * The base implementation of `_.sortBy` which uses `comparer` to define | |
| 4176 * the sort order of `array` and replaces criteria objects with their | |
| 4177 * corresponding values. | |
| 4178 * | |
| 4179 * @private | |
| 4180 * @param {Array} array The array to sort. | |
| 4181 * @param {Function} comparer The function to define sort order. | |
| 4182 * @returns {Array} Returns `array`. | |
| 4183 */ | |
| 4184 function baseSortBy(array, comparer) { | |
| 4185 var length = array.length; | |
| 4186 | |
| 4187 array.sort(comparer); | |
| 4188 while (length--) { | |
| 4189 array[length] = array[length].value; | |
| 4190 } | |
| 4191 return array; | |
| 4192 } | |
| 4193 | |
| 4194 /** | |
| 4195 * The base implementation of `_.sortByOrder` without param guards. | |
| 4196 * | |
| 4197 * @private | |
| 4198 * @param {Array|Object|string} collection The collection to iterate over. | |
| 4199 * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. | |
| 4200 * @param {boolean[]} orders The sort orders of `iteratees`. | |
| 4201 * @returns {Array} Returns the new sorted array. | |
| 4202 */ | |
| 4203 function baseSortByOrder(collection, iteratees, orders) { | |
| 4204 var callback = getCallback(), | |
| 4205 index = -1; | |
| 4206 | |
| 4207 iteratees = arrayMap(iteratees, function(iteratee) { return callback(iteratee); }); | |
| 4208 | |
| 4209 var result = baseMap(collection, function(value) { | |
| 4210 var criteria = arrayMap(iteratees, function(iteratee) { return iteratee(value); }); | |
| 4211 return { 'criteria': criteria, 'index': ++index, 'value': value }; | |
| 4212 }); | |
| 4213 | |
| 4214 return baseSortBy(result, function(object, other) { | |
| 4215 return compareMultiple(object, other, orders); | |
| 4216 }); | |
| 4217 } | |
| 4218 | |
| 4219 /** | |
| 4220 * The base implementation of `_.sum` without support for callback shorthands | |
| 4221 * and `this` binding. | |
| 4222 * | |
| 4223 * @private | |
| 4224 * @param {Array|Object|string} collection The collection to iterate over. | |
| 4225 * @param {Function} iteratee The function invoked per iteration. | |
| 4226 * @returns {number} Returns the sum. | |
| 4227 */ | |
| 4228 function baseSum(collection, iteratee) { | |
| 4229 var result = 0; | |
| 4230 baseEach(collection, function(value, index, collection) { | |
| 4231 result += +iteratee(value, index, collection) || 0; | |
| 4232 }); | |
| 4233 return result; | |
| 4234 } | |
| 4235 | |
| 4236 /** | |
| 4237 * The base implementation of `_.uniq` without support for callback shorthands | |
| 4238 * and `this` binding. | |
| 4239 * | |
| 4240 * @private | |
| 4241 * @param {Array} array The array to inspect. | |
| 4242 * @param {Function} [iteratee] The function invoked per iteration. | |
| 4243 * @returns {Array} Returns the new duplicate-value-free array. | |
| 4244 */ | |
| 4245 function baseUniq(array, iteratee) { | |
| 4246 var index = -1, | |
| 4247 indexOf = getIndexOf(), | |
| 4248 length = array.length, | |
| 4249 isCommon = indexOf == baseIndexOf, | |
| 4250 isLarge = isCommon && length >= 200, | |
| 4251 seen = isLarge ? createCache() : null, | |
| 4252 result = []; | |
| 4253 | |
| 4254 if (seen) { | |
| 4255 indexOf = cacheIndexOf; | |
| 4256 isCommon = false; | |
| 4257 } else { | |
| 4258 isLarge = false; | |
| 4259 seen = iteratee ? [] : result; | |
| 4260 } | |
| 4261 outer: | |
| 4262 while (++index < length) { | |
| 4263 var value = array[index], | |
| 4264 computed = iteratee ? iteratee(value, index, array) : value; | |
| 4265 | |
| 4266 if (isCommon && value === value) { | |
| 4267 var seenIndex = seen.length; | |
| 4268 while (seenIndex--) { | |
| 4269 if (seen[seenIndex] === computed) { | |
| 4270 continue outer; | |
| 4271 } | |
| 4272 } | |
| 4273 if (iteratee) { | |
| 4274 seen.push(computed); | |
| 4275 } | |
| 4276 result.push(value); | |
| 4277 } | |
| 4278 else if (indexOf(seen, computed, 0) < 0) { | |
| 4279 if (iteratee || isLarge) { | |
| 4280 seen.push(computed); | |
| 4281 } | |
| 4282 result.push(value); | |
| 4283 } | |
| 4284 } | |
| 4285 return result; | |
| 4286 } | |
| 4287 | |
| 4288 /** | |
| 4289 * The base implementation of `_.values` and `_.valuesIn` which creates an | |
| 4290 * array of `object` property values corresponding to the property names | |
| 4291 * of `props`. | |
| 4292 * | |
| 4293 * @private | |
| 4294 * @param {Object} object The object to query. | |
| 4295 * @param {Array} props The property names to get values for. | |
| 4296 * @returns {Object} Returns the array of property values. | |
| 4297 */ | |
| 4298 function baseValues(object, props) { | |
| 4299 var index = -1, | |
| 4300 length = props.length, | |
| 4301 result = Array(length); | |
| 4302 | |
| 4303 while (++index < length) { | |
| 4304 result[index] = object[props[index]]; | |
| 4305 } | |
| 4306 return result; | |
| 4307 } | |
| 4308 | |
| 4309 /** | |
| 4310 * The base implementation of `_.dropRightWhile`, `_.dropWhile`, `_.takeRightWhile`, | |
| 4311 * and `_.takeWhile` without support for callback shorthands and `this` binding. | |
| 4312 * | |
| 4313 * @private | |
| 4314 * @param {Array} array The array to query. | |
| 4315 * @param {Function} predicate The function invoked per iteration. | |
| 4316 * @param {boolean} [isDrop] Specify dropping elements instead of taking them. | |
| 4317 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 4318 * @returns {Array} Returns the slice of `array`. | |
| 4319 */ | |
| 4320 function baseWhile(array, predicate, isDrop, fromRight) { | |
| 4321 var length = array.length, | |
| 4322 index = fromRight ? length : -1; | |
| 4323 | |
| 4324 while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {} | |
| 4325 return isDrop | |
| 4326 ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length)) | |
| 4327 : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index)); | |
| 4328 } | |
| 4329 | |
| 4330 /** | |
| 4331 * The base implementation of `wrapperValue` which returns the result of | |
| 4332 * performing a sequence of actions on the unwrapped `value`, where each | |
| 4333 * successive action is supplied the return value of the previous. | |
| 4334 * | |
| 4335 * @private | |
| 4336 * @param {*} value The unwrapped value. | |
| 4337 * @param {Array} actions Actions to peform to resolve the unwrapped value. | |
| 4338 * @returns {*} Returns the resolved value. | |
| 4339 */ | |
| 4340 function baseWrapperValue(value, actions) { | |
| 4341 var result = value; | |
| 4342 if (result instanceof LazyWrapper) { | |
| 4343 result = result.value(); | |
| 4344 } | |
| 4345 var index = -1, | |
| 4346 length = actions.length; | |
| 4347 | |
| 4348 while (++index < length) { | |
| 4349 var args = [result], | |
| 4350 action = actions[index]; | |
| 4351 | |
| 4352 push.apply(args, action.args); | |
| 4353 result = action.func.apply(action.thisArg, args); | |
| 4354 } | |
| 4355 return result; | |
| 4356 } | |
| 4357 | |
| 4358 /** | |
| 4359 * Performs a binary search of `array` to determine the index at which `value` | |
| 4360 * should be inserted into `array` in order to maintain its sort order. | |
| 4361 * | |
| 4362 * @private | |
| 4363 * @param {Array} array The sorted array to inspect. | |
| 4364 * @param {*} value The value to evaluate. | |
| 4365 * @param {boolean} [retHighest] Specify returning the highest qualified index. | |
| 4366 * @returns {number} Returns the index at which `value` should be inserted | |
| 4367 * into `array`. | |
| 4368 */ | |
| 4369 function binaryIndex(array, value, retHighest) { | |
| 4370 var low = 0, | |
| 4371 high = array ? array.length : low; | |
| 4372 | |
| 4373 if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { | |
| 4374 while (low < high) { | |
| 4375 var mid = (low + high) >>> 1, | |
| 4376 computed = array[mid]; | |
| 4377 | |
| 4378 if (retHighest ? (computed <= value) : (computed < value)) { | |
| 4379 low = mid + 1; | |
| 4380 } else { | |
| 4381 high = mid; | |
| 4382 } | |
| 4383 } | |
| 4384 return high; | |
| 4385 } | |
| 4386 return binaryIndexBy(array, value, identity, retHighest); | |
| 4387 } | |
| 4388 | |
| 4389 /** | |
| 4390 * This function is like `binaryIndex` except that it invokes `iteratee` for | |
| 4391 * `value` and each element of `array` to compute their sort ranking. The | |
| 4392 * iteratee is invoked with one argument; (value). | |
| 4393 * | |
| 4394 * @private | |
| 4395 * @param {Array} array The sorted array to inspect. | |
| 4396 * @param {*} value The value to evaluate. | |
| 4397 * @param {Function} iteratee The function invoked per iteration. | |
| 4398 * @param {boolean} [retHighest] Specify returning the highest qualified index. | |
| 4399 * @returns {number} Returns the index at which `value` should be inserted | |
| 4400 * into `array`. | |
| 4401 */ | |
| 4402 function binaryIndexBy(array, value, iteratee, retHighest) { | |
| 4403 value = iteratee(value); | |
| 4404 | |
| 4405 var low = 0, | |
| 4406 high = array ? array.length : 0, | |
| 4407 valIsNaN = value !== value, | |
| 4408 valIsUndef = value === undefined; | |
| 4409 | |
| 4410 while (low < high) { | |
| 4411 var mid = floor((low + high) / 2), | |
| 4412 computed = iteratee(array[mid]), | |
| 4413 isReflexive = computed === computed; | |
| 4414 | |
| 4415 if (valIsNaN) { | |
| 4416 var setLow = isReflexive || retHighest; | |
| 4417 } else if (valIsUndef) { | |
| 4418 setLow = isReflexive && (retHighest || computed !== undefined); | |
| 4419 } else { | |
| 4420 setLow = retHighest ? (computed <= value) : (computed < value); | |
| 4421 } | |
| 4422 if (setLow) { | |
| 4423 low = mid + 1; | |
| 4424 } else { | |
| 4425 high = mid; | |
| 4426 } | |
| 4427 } | |
| 4428 return nativeMin(high, MAX_ARRAY_INDEX); | |
| 4429 } | |
| 4430 | |
| 4431 /** | |
| 4432 * A specialized version of `baseCallback` which only supports `this` binding | |
| 4433 * and specifying the number of arguments to provide to `func`. | |
| 4434 * | |
| 4435 * @private | |
| 4436 * @param {Function} func The function to bind. | |
| 4437 * @param {*} thisArg The `this` binding of `func`. | |
| 4438 * @param {number} [argCount] The number of arguments to provide to `func`. | |
| 4439 * @returns {Function} Returns the callback. | |
| 4440 */ | |
| 4441 function bindCallback(func, thisArg, argCount) { | |
| 4442 if (typeof func != 'function') { | |
| 4443 return identity; | |
| 4444 } | |
| 4445 if (thisArg === undefined) { | |
| 4446 return func; | |
| 4447 } | |
| 4448 switch (argCount) { | |
| 4449 case 1: return function(value) { | |
| 4450 return func.call(thisArg, value); | |
| 4451 }; | |
| 4452 case 3: return function(value, index, collection) { | |
| 4453 return func.call(thisArg, value, index, collection); | |
| 4454 }; | |
| 4455 case 4: return function(accumulator, value, index, collection) { | |
| 4456 return func.call(thisArg, accumulator, value, index, collection); | |
| 4457 }; | |
| 4458 case 5: return function(value, other, key, object, source) { | |
| 4459 return func.call(thisArg, value, other, key, object, source); | |
| 4460 }; | |
| 4461 } | |
| 4462 return function() { | |
| 4463 return func.apply(thisArg, arguments); | |
| 4464 }; | |
| 4465 } | |
| 4466 | |
| 4467 /** | |
| 4468 * Creates a clone of the given array buffer. | |
| 4469 * | |
| 4470 * @private | |
| 4471 * @param {ArrayBuffer} buffer The array buffer to clone. | |
| 4472 * @returns {ArrayBuffer} Returns the cloned array buffer. | |
| 4473 */ | |
| 4474 function bufferClone(buffer) { | |
| 4475 return bufferSlice.call(buffer, 0); | |
| 4476 } | |
| 4477 if (!bufferSlice) { | |
| 4478 // PhantomJS has `ArrayBuffer` and `Uint8Array` but not `Float64Array`. | |
| 4479 bufferClone = !(ArrayBuffer && Uint8Array) ? constant(null) : function(buffer) { | |
| 4480 var byteLength = buffer.byteLength, | |
| 4481 floatLength = Float64Array ? floor(byteLength / FLOAT64_BYTES_PER_ELEMENT) : 0, | |
| 4482 offset = floatLength * FLOAT64_BYTES_PER_ELEMENT, | |
| 4483 result = new ArrayBuffer(byteLength); | |
| 4484 | |
| 4485 if (floatLength) { | |
| 4486 var view = new Float64Array(result, 0, floatLength); | |
| 4487 view.set(new Float64Array(buffer, 0, floatLength)); | |
| 4488 } | |
| 4489 if (byteLength != offset) { | |
| 4490 view = new Uint8Array(result, offset); | |
| 4491 view.set(new Uint8Array(buffer, offset)); | |
| 4492 } | |
| 4493 return result; | |
| 4494 }; | |
| 4495 } | |
| 4496 | |
| 4497 /** | |
| 4498 * Creates an array that is the composition of partially applied arguments, | |
| 4499 * placeholders, and provided arguments into a single array of arguments. | |
| 4500 * | |
| 4501 * @private | |
| 4502 * @param {Array|Object} args The provided arguments. | |
| 4503 * @param {Array} partials The arguments to prepend to those provided. | |
| 4504 * @param {Array} holders The `partials` placeholder indexes. | |
| 4505 * @returns {Array} Returns the new array of composed arguments. | |
| 4506 */ | |
| 4507 function composeArgs(args, partials, holders) { | |
| 4508 var holdersLength = holders.length, | |
| 4509 argsIndex = -1, | |
| 4510 argsLength = nativeMax(args.length - holdersLength, 0), | |
| 4511 leftIndex = -1, | |
| 4512 leftLength = partials.length, | |
| 4513 result = Array(argsLength + leftLength); | |
| 4514 | |
| 4515 while (++leftIndex < leftLength) { | |
| 4516 result[leftIndex] = partials[leftIndex]; | |
| 4517 } | |
| 4518 while (++argsIndex < holdersLength) { | |
| 4519 result[holders[argsIndex]] = args[argsIndex]; | |
| 4520 } | |
| 4521 while (argsLength--) { | |
| 4522 result[leftIndex++] = args[argsIndex++]; | |
| 4523 } | |
| 4524 return result; | |
| 4525 } | |
| 4526 | |
| 4527 /** | |
| 4528 * This function is like `composeArgs` except that the arguments composition | |
| 4529 * is tailored for `_.partialRight`. | |
| 4530 * | |
| 4531 * @private | |
| 4532 * @param {Array|Object} args The provided arguments. | |
| 4533 * @param {Array} partials The arguments to append to those provided. | |
| 4534 * @param {Array} holders The `partials` placeholder indexes. | |
| 4535 * @returns {Array} Returns the new array of composed arguments. | |
| 4536 */ | |
| 4537 function composeArgsRight(args, partials, holders) { | |
| 4538 var holdersIndex = -1, | |
| 4539 holdersLength = holders.length, | |
| 4540 argsIndex = -1, | |
| 4541 argsLength = nativeMax(args.length - holdersLength, 0), | |
| 4542 rightIndex = -1, | |
| 4543 rightLength = partials.length, | |
| 4544 result = Array(argsLength + rightLength); | |
| 4545 | |
| 4546 while (++argsIndex < argsLength) { | |
| 4547 result[argsIndex] = args[argsIndex]; | |
| 4548 } | |
| 4549 var pad = argsIndex; | |
| 4550 while (++rightIndex < rightLength) { | |
| 4551 result[pad + rightIndex] = partials[rightIndex]; | |
| 4552 } | |
| 4553 while (++holdersIndex < holdersLength) { | |
| 4554 result[pad + holders[holdersIndex]] = args[argsIndex++]; | |
| 4555 } | |
| 4556 return result; | |
| 4557 } | |
| 4558 | |
| 4559 /** | |
| 4560 * Creates a function that aggregates a collection, creating an accumulator | |
| 4561 * object composed from the results of running each element in the collection | |
| 4562 * through an iteratee. | |
| 4563 * | |
| 4564 * **Note:** This function is used to create `_.countBy`, `_.groupBy`, `_.indexBy`, | |
| 4565 * and `_.partition`. | |
| 4566 * | |
| 4567 * @private | |
| 4568 * @param {Function} setter The function to set keys and values of the accumulator object. | |
| 4569 * @param {Function} [initializer] The function to initialize the accumulator object. | |
| 4570 * @returns {Function} Returns the new aggregator function. | |
| 4571 */ | |
| 4572 function createAggregator(setter, initializer) { | |
| 4573 return function(collection, iteratee, thisArg) { | |
| 4574 var result = initializer ? initializer() : {}; | |
| 4575 iteratee = getCallback(iteratee, thisArg, 3); | |
| 4576 | |
| 4577 if (isArray(collection)) { | |
| 4578 var index = -1, | |
| 4579 length = collection.length; | |
| 4580 | |
| 4581 while (++index < length) { | |
| 4582 var value = collection[index]; | |
| 4583 setter(result, value, iteratee(value, index, collection), collection); | |
| 4584 } | |
| 4585 } else { | |
| 4586 baseEach(collection, function(value, key, collection) { | |
| 4587 setter(result, value, iteratee(value, key, collection), collection); | |
| 4588 }); | |
| 4589 } | |
| 4590 return result; | |
| 4591 }; | |
| 4592 } | |
| 4593 | |
| 4594 /** | |
| 4595 * Creates a function that assigns properties of source object(s) to a given | |
| 4596 * destination object. | |
| 4597 * | |
| 4598 * **Note:** This function is used to create `_.assign`, `_.defaults`, and `_.merge`. | |
| 4599 * | |
| 4600 * @private | |
| 4601 * @param {Function} assigner The function to assign values. | |
| 4602 * @returns {Function} Returns the new assigner function. | |
| 4603 */ | |
| 4604 function createAssigner(assigner) { | |
| 4605 return restParam(function(object, sources) { | |
| 4606 var index = -1, | |
| 4607 length = object == null ? 0 : sources.length, | |
| 4608 customizer = length > 2 && sources[length - 2], | |
| 4609 guard = length > 2 && sources[2], | |
| 4610 thisArg = length > 1 && sources[length - 1]; | |
| 4611 | |
| 4612 if (typeof customizer == 'function') { | |
| 4613 customizer = bindCallback(customizer, thisArg, 5); | |
| 4614 length -= 2; | |
| 4615 } else { | |
| 4616 customizer = typeof thisArg == 'function' ? thisArg : null; | |
| 4617 length -= (customizer ? 1 : 0); | |
| 4618 } | |
| 4619 if (guard && isIterateeCall(sources[0], sources[1], guard)) { | |
| 4620 customizer = length < 3 ? null : customizer; | |
| 4621 length = 1; | |
| 4622 } | |
| 4623 while (++index < length) { | |
| 4624 var source = sources[index]; | |
| 4625 if (source) { | |
| 4626 assigner(object, source, customizer); | |
| 4627 } | |
| 4628 } | |
| 4629 return object; | |
| 4630 }); | |
| 4631 } | |
| 4632 | |
| 4633 /** | |
| 4634 * Creates a `baseEach` or `baseEachRight` function. | |
| 4635 * | |
| 4636 * @private | |
| 4637 * @param {Function} eachFunc The function to iterate over a collection. | |
| 4638 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 4639 * @returns {Function} Returns the new base function. | |
| 4640 */ | |
| 4641 function createBaseEach(eachFunc, fromRight) { | |
| 4642 return function(collection, iteratee) { | |
| 4643 var length = collection ? getLength(collection) : 0; | |
| 4644 if (!isLength(length)) { | |
| 4645 return eachFunc(collection, iteratee); | |
| 4646 } | |
| 4647 var index = fromRight ? length : -1, | |
| 4648 iterable = toObject(collection); | |
| 4649 | |
| 4650 while ((fromRight ? index-- : ++index < length)) { | |
| 4651 if (iteratee(iterable[index], index, iterable) === false) { | |
| 4652 break; | |
| 4653 } | |
| 4654 } | |
| 4655 return collection; | |
| 4656 }; | |
| 4657 } | |
| 4658 | |
| 4659 /** | |
| 4660 * Creates a base function for `_.forIn` or `_.forInRight`. | |
| 4661 * | |
| 4662 * @private | |
| 4663 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 4664 * @returns {Function} Returns the new base function. | |
| 4665 */ | |
| 4666 function createBaseFor(fromRight) { | |
| 4667 return function(object, iteratee, keysFunc) { | |
| 4668 var iterable = toObject(object), | |
| 4669 props = keysFunc(object), | |
| 4670 length = props.length, | |
| 4671 index = fromRight ? length : -1; | |
| 4672 | |
| 4673 while ((fromRight ? index-- : ++index < length)) { | |
| 4674 var key = props[index]; | |
| 4675 if (iteratee(iterable[key], key, iterable) === false) { | |
| 4676 break; | |
| 4677 } | |
| 4678 } | |
| 4679 return object; | |
| 4680 }; | |
| 4681 } | |
| 4682 | |
| 4683 /** | |
| 4684 * Creates a function that wraps `func` and invokes it with the `this` | |
| 4685 * binding of `thisArg`. | |
| 4686 * | |
| 4687 * @private | |
| 4688 * @param {Function} func The function to bind. | |
| 4689 * @param {*} [thisArg] The `this` binding of `func`. | |
| 4690 * @returns {Function} Returns the new bound function. | |
| 4691 */ | |
| 4692 function createBindWrapper(func, thisArg) { | |
| 4693 var Ctor = createCtorWrapper(func); | |
| 4694 | |
| 4695 function wrapper() { | |
| 4696 var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; | |
| 4697 return fn.apply(thisArg, arguments); | |
| 4698 } | |
| 4699 return wrapper; | |
| 4700 } | |
| 4701 | |
| 4702 /** | |
| 4703 * Creates a `Set` cache object to optimize linear searches of large arrays. | |
| 4704 * | |
| 4705 * @private | |
| 4706 * @param {Array} [values] The values to cache. | |
| 4707 * @returns {null|Object} Returns the new cache object if `Set` is supported, else `null`. | |
| 4708 */ | |
| 4709 var createCache = !(nativeCreate && Set) ? constant(null) : function(values) { | |
| 4710 return new SetCache(values); | |
| 4711 }; | |
| 4712 | |
| 4713 /** | |
| 4714 * Creates a function that produces compound words out of the words in a | |
| 4715 * given string. | |
| 4716 * | |
| 4717 * @private | |
| 4718 * @param {Function} callback The function to combine each word. | |
| 4719 * @returns {Function} Returns the new compounder function. | |
| 4720 */ | |
| 4721 function createCompounder(callback) { | |
| 4722 return function(string) { | |
| 4723 var index = -1, | |
| 4724 array = words(deburr(string)), | |
| 4725 length = array.length, | |
| 4726 result = ''; | |
| 4727 | |
| 4728 while (++index < length) { | |
| 4729 result = callback(result, array[index], index); | |
| 4730 } | |
| 4731 return result; | |
| 4732 }; | |
| 4733 } | |
| 4734 | |
| 4735 /** | |
| 4736 * Creates a function that produces an instance of `Ctor` regardless of | |
| 4737 * whether it was invoked as part of a `new` expression or by `call` or `apply`. | |
| 4738 * | |
| 4739 * @private | |
| 4740 * @param {Function} Ctor The constructor to wrap. | |
| 4741 * @returns {Function} Returns the new wrapped function. | |
| 4742 */ | |
| 4743 function createCtorWrapper(Ctor) { | |
| 4744 return function() { | |
| 4745 var thisBinding = baseCreate(Ctor.prototype), | |
| 4746 result = Ctor.apply(thisBinding, arguments); | |
| 4747 | |
| 4748 // Mimic the constructor's `return` behavior. | |
| 4749 // See https://es5.github.io/#x13.2.2 for more details. | |
| 4750 return isObject(result) ? result : thisBinding; | |
| 4751 }; | |
| 4752 } | |
| 4753 | |
| 4754 /** | |
| 4755 * Creates a `_.curry` or `_.curryRight` function. | |
| 4756 * | |
| 4757 * @private | |
| 4758 * @param {boolean} flag The curry bit flag. | |
| 4759 * @returns {Function} Returns the new curry function. | |
| 4760 */ | |
| 4761 function createCurry(flag) { | |
| 4762 function curryFunc(func, arity, guard) { | |
| 4763 if (guard && isIterateeCall(func, arity, guard)) { | |
| 4764 arity = null; | |
| 4765 } | |
| 4766 var result = createWrapper(func, flag, null, null, null, null, null, arity); | |
| 4767 result.placeholder = curryFunc.placeholder; | |
| 4768 return result; | |
| 4769 } | |
| 4770 return curryFunc; | |
| 4771 } | |
| 4772 | |
| 4773 /** | |
| 4774 * Creates a `_.max` or `_.min` function. | |
| 4775 * | |
| 4776 * @private | |
| 4777 * @param {Function} arrayFunc The function to get the extremum value from an array. | |
| 4778 * @param {boolean} [isMin] Specify returning the minimum, instead of the maximum, | |
| 4779 * extremum value. | |
| 4780 * @returns {Function} Returns the new extremum function. | |
| 4781 */ | |
| 4782 function createExtremum(arrayFunc, isMin) { | |
| 4783 return function(collection, iteratee, thisArg) { | |
| 4784 if (thisArg && isIterateeCall(collection, iteratee, thisArg)) { | |
| 4785 iteratee = null; | |
| 4786 } | |
| 4787 var func = getCallback(), | |
| 4788 noIteratee = iteratee == null; | |
| 4789 | |
| 4790 if (!(func === baseCallback && noIteratee)) { | |
| 4791 noIteratee = false; | |
| 4792 iteratee = func(iteratee, thisArg, 3); | |
| 4793 } | |
| 4794 if (noIteratee) { | |
| 4795 var isArr = isArray(collection); | |
| 4796 if (!isArr && isString(collection)) { | |
| 4797 iteratee = charAtCallback; | |
| 4798 } else { | |
| 4799 return arrayFunc(isArr ? collection : toIterable(collection)); | |
| 4800 } | |
| 4801 } | |
| 4802 return extremumBy(collection, iteratee, isMin); | |
| 4803 }; | |
| 4804 } | |
| 4805 | |
| 4806 /** | |
| 4807 * Creates a `_.find` or `_.findLast` function. | |
| 4808 * | |
| 4809 * @private | |
| 4810 * @param {Function} eachFunc The function to iterate over a collection. | |
| 4811 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 4812 * @returns {Function} Returns the new find function. | |
| 4813 */ | |
| 4814 function createFind(eachFunc, fromRight) { | |
| 4815 return function(collection, predicate, thisArg) { | |
| 4816 predicate = getCallback(predicate, thisArg, 3); | |
| 4817 if (isArray(collection)) { | |
| 4818 var index = baseFindIndex(collection, predicate, fromRight); | |
| 4819 return index > -1 ? collection[index] : undefined; | |
| 4820 } | |
| 4821 return baseFind(collection, predicate, eachFunc); | |
| 4822 } | |
| 4823 } | |
| 4824 | |
| 4825 /** | |
| 4826 * Creates a `_.findIndex` or `_.findLastIndex` function. | |
| 4827 * | |
| 4828 * @private | |
| 4829 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 4830 * @returns {Function} Returns the new find function. | |
| 4831 */ | |
| 4832 function createFindIndex(fromRight) { | |
| 4833 return function(array, predicate, thisArg) { | |
| 4834 if (!(array && array.length)) { | |
| 4835 return -1; | |
| 4836 } | |
| 4837 predicate = getCallback(predicate, thisArg, 3); | |
| 4838 return baseFindIndex(array, predicate, fromRight); | |
| 4839 }; | |
| 4840 } | |
| 4841 | |
| 4842 /** | |
| 4843 * Creates a `_.findKey` or `_.findLastKey` function. | |
| 4844 * | |
| 4845 * @private | |
| 4846 * @param {Function} objectFunc The function to iterate over an object. | |
| 4847 * @returns {Function} Returns the new find function. | |
| 4848 */ | |
| 4849 function createFindKey(objectFunc) { | |
| 4850 return function(object, predicate, thisArg) { | |
| 4851 predicate = getCallback(predicate, thisArg, 3); | |
| 4852 return baseFind(object, predicate, objectFunc, true); | |
| 4853 }; | |
| 4854 } | |
| 4855 | |
| 4856 /** | |
| 4857 * Creates a `_.flow` or `_.flowRight` function. | |
| 4858 * | |
| 4859 * @private | |
| 4860 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 4861 * @returns {Function} Returns the new flow function. | |
| 4862 */ | |
| 4863 function createFlow(fromRight) { | |
| 4864 return function() { | |
| 4865 var length = arguments.length; | |
| 4866 if (!length) { | |
| 4867 return function() { return arguments[0]; }; | |
| 4868 } | |
| 4869 var wrapper, | |
| 4870 index = fromRight ? length : -1, | |
| 4871 leftIndex = 0, | |
| 4872 funcs = Array(length); | |
| 4873 | |
| 4874 while ((fromRight ? index-- : ++index < length)) { | |
| 4875 var func = funcs[leftIndex++] = arguments[index]; | |
| 4876 if (typeof func != 'function') { | |
| 4877 throw new TypeError(FUNC_ERROR_TEXT); | |
| 4878 } | |
| 4879 var funcName = wrapper ? '' : getFuncName(func); | |
| 4880 wrapper = funcName == 'wrapper' ? new LodashWrapper([]) : wrapper; | |
| 4881 } | |
| 4882 index = wrapper ? -1 : length; | |
| 4883 while (++index < length) { | |
| 4884 func = funcs[index]; | |
| 4885 funcName = getFuncName(func); | |
| 4886 | |
| 4887 var data = funcName == 'wrapper' ? getData(func) : null; | |
| 4888 if (data && isLaziable(data[0])) { | |
| 4889 wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]); | |
| 4890 } else { | |
| 4891 wrapper = (func.length == 1 && isLaziable(func)) ? wrapper[funcName]() : wrapper.thru(func); | |
| 4892 } | |
| 4893 } | |
| 4894 return function() { | |
| 4895 var args = arguments; | |
| 4896 if (wrapper && args.length == 1 && isArray(args[0])) { | |
| 4897 return wrapper.plant(args[0]).value(); | |
| 4898 } | |
| 4899 var index = 0, | |
| 4900 result = funcs[index].apply(this, args); | |
| 4901 | |
| 4902 while (++index < length) { | |
| 4903 result = funcs[index].call(this, result); | |
| 4904 } | |
| 4905 return result; | |
| 4906 }; | |
| 4907 }; | |
| 4908 } | |
| 4909 | |
| 4910 /** | |
| 4911 * Creates a function for `_.forEach` or `_.forEachRight`. | |
| 4912 * | |
| 4913 * @private | |
| 4914 * @param {Function} arrayFunc The function to iterate over an array. | |
| 4915 * @param {Function} eachFunc The function to iterate over a collection. | |
| 4916 * @returns {Function} Returns the new each function. | |
| 4917 */ | |
| 4918 function createForEach(arrayFunc, eachFunc) { | |
| 4919 return function(collection, iteratee, thisArg) { | |
| 4920 return (typeof iteratee == 'function' && thisArg === undefined && isArray(collection)) | |
| 4921 ? arrayFunc(collection, iteratee) | |
| 4922 : eachFunc(collection, bindCallback(iteratee, thisArg, 3)); | |
| 4923 }; | |
| 4924 } | |
| 4925 | |
| 4926 /** | |
| 4927 * Creates a function for `_.forIn` or `_.forInRight`. | |
| 4928 * | |
| 4929 * @private | |
| 4930 * @param {Function} objectFunc The function to iterate over an object. | |
| 4931 * @returns {Function} Returns the new each function. | |
| 4932 */ | |
| 4933 function createForIn(objectFunc) { | |
| 4934 return function(object, iteratee, thisArg) { | |
| 4935 if (typeof iteratee != 'function' || thisArg !== undefined) { | |
| 4936 iteratee = bindCallback(iteratee, thisArg, 3); | |
| 4937 } | |
| 4938 return objectFunc(object, iteratee, keysIn); | |
| 4939 }; | |
| 4940 } | |
| 4941 | |
| 4942 /** | |
| 4943 * Creates a function for `_.forOwn` or `_.forOwnRight`. | |
| 4944 * | |
| 4945 * @private | |
| 4946 * @param {Function} objectFunc The function to iterate over an object. | |
| 4947 * @returns {Function} Returns the new each function. | |
| 4948 */ | |
| 4949 function createForOwn(objectFunc) { | |
| 4950 return function(object, iteratee, thisArg) { | |
| 4951 if (typeof iteratee != 'function' || thisArg !== undefined) { | |
| 4952 iteratee = bindCallback(iteratee, thisArg, 3); | |
| 4953 } | |
| 4954 return objectFunc(object, iteratee); | |
| 4955 }; | |
| 4956 } | |
| 4957 | |
| 4958 /** | |
| 4959 * Creates a function for `_.padLeft` or `_.padRight`. | |
| 4960 * | |
| 4961 * @private | |
| 4962 * @param {boolean} [fromRight] Specify padding from the right. | |
| 4963 * @returns {Function} Returns the new pad function. | |
| 4964 */ | |
| 4965 function createPadDir(fromRight) { | |
| 4966 return function(string, length, chars) { | |
| 4967 string = baseToString(string); | |
| 4968 return string && ((fromRight ? string : '') + createPadding(string, length, chars) + (fromRight ? '' : string)); | |
| 4969 }; | |
| 4970 } | |
| 4971 | |
| 4972 /** | |
| 4973 * Creates a `_.partial` or `_.partialRight` function. | |
| 4974 * | |
| 4975 * @private | |
| 4976 * @param {boolean} flag The partial bit flag. | |
| 4977 * @returns {Function} Returns the new partial function. | |
| 4978 */ | |
| 4979 function createPartial(flag) { | |
| 4980 var partialFunc = restParam(function(func, partials) { | |
| 4981 var holders = replaceHolders(partials, partialFunc.placeholder); | |
| 4982 return createWrapper(func, flag, null, partials, holders); | |
| 4983 }); | |
| 4984 return partialFunc; | |
| 4985 } | |
| 4986 | |
| 4987 /** | |
| 4988 * Creates a function for `_.reduce` or `_.reduceRight`. | |
| 4989 * | |
| 4990 * @private | |
| 4991 * @param {Function} arrayFunc The function to iterate over an array. | |
| 4992 * @param {Function} eachFunc The function to iterate over a collection. | |
| 4993 * @returns {Function} Returns the new each function. | |
| 4994 */ | |
| 4995 function createReduce(arrayFunc, eachFunc) { | |
| 4996 return function(collection, iteratee, accumulator, thisArg) { | |
| 4997 var initFromArray = arguments.length < 3; | |
| 4998 return (typeof iteratee == 'function' && thisArg === undefined && isArray(collection)) | |
| 4999 ? arrayFunc(collection, iteratee, accumulator, initFromArray) | |
| 5000 : baseReduce(collection, getCallback(iteratee, thisArg, 4), accumulator, initFromArray, eachFunc); | |
| 5001 }; | |
| 5002 } | |
| 5003 | |
| 5004 /** | |
| 5005 * Creates a function that wraps `func` and invokes it with optional `this` | |
| 5006 * binding of, partial application, and currying. | |
| 5007 * | |
| 5008 * @private | |
| 5009 * @param {Function|string} func The function or method name to reference. | |
| 5010 * @param {number} bitmask The bitmask of flags. See `createWrapper` for more details. | |
| 5011 * @param {*} [thisArg] The `this` binding of `func`. | |
| 5012 * @param {Array} [partials] The arguments to prepend to those provided to the new function. | |
| 5013 * @param {Array} [holders] The `partials` placeholder indexes. | |
| 5014 * @param {Array} [partialsRight] The arguments to append to those provided to the new function. | |
| 5015 * @param {Array} [holdersRight] The `partialsRight` placeholder indexes. | |
| 5016 * @param {Array} [argPos] The argument positions of the new function. | |
| 5017 * @param {number} [ary] The arity cap of `func`. | |
| 5018 * @param {number} [arity] The arity of `func`. | |
| 5019 * @returns {Function} Returns the new wrapped function. | |
| 5020 */ | |
| 5021 function createHybridWrapper(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) { | |
| 5022 var isAry = bitmask & ARY_FLAG, | |
| 5023 isBind = bitmask & BIND_FLAG, | |
| 5024 isBindKey = bitmask & BIND_KEY_FLAG, | |
| 5025 isCurry = bitmask & CURRY_FLAG, | |
| 5026 isCurryBound = bitmask & CURRY_BOUND_FLAG, | |
| 5027 isCurryRight = bitmask & CURRY_RIGHT_FLAG; | |
| 5028 | |
| 5029 var Ctor = !isBindKey && createCtorWrapper(func), | |
| 5030 key = func; | |
| 5031 | |
| 5032 function wrapper() { | |
| 5033 // Avoid `arguments` object use disqualifying optimizations by | |
| 5034 // converting it to an array before providing it to other functions. | |
| 5035 var length = arguments.length, | |
| 5036 index = length, | |
| 5037 args = Array(length); | |
| 5038 | |
| 5039 while (index--) { | |
| 5040 args[index] = arguments[index]; | |
| 5041 } | |
| 5042 if (partials) { | |
| 5043 args = composeArgs(args, partials, holders); | |
| 5044 } | |
| 5045 if (partialsRight) { | |
| 5046 args = composeArgsRight(args, partialsRight, holdersRight); | |
| 5047 } | |
| 5048 if (isCurry || isCurryRight) { | |
| 5049 var placeholder = wrapper.placeholder, | |
| 5050 argsHolders = replaceHolders(args, placeholder); | |
| 5051 | |
| 5052 length -= argsHolders.length; | |
| 5053 if (length < arity) { | |
| 5054 var newArgPos = argPos ? arrayCopy(argPos) : null, | |
| 5055 newArity = nativeMax(arity - length, 0), | |
| 5056 newsHolders = isCurry ? argsHolders : null, | |
| 5057 newHoldersRight = isCurry ? null : argsHolders, | |
| 5058 newPartials = isCurry ? args : null, | |
| 5059 newPartialsRight = isCurry ? null : args; | |
| 5060 | |
| 5061 bitmask |= (isCurry ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG); | |
| 5062 bitmask &= ~(isCurry ? PARTIAL_RIGHT_FLAG : PARTIAL_FLAG); | |
| 5063 | |
| 5064 if (!isCurryBound) { | |
| 5065 bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG); | |
| 5066 } | |
| 5067 var newData = [func, bitmask, thisArg, newPartials, newsHolders, newPartialsRight, newHoldersRight, newArgPos, ary, newArity], | |
| 5068 result = createHybridWrapper.apply(undefined, newData); | |
| 5069 | |
| 5070 if (isLaziable(func)) { | |
| 5071 setData(result, newData); | |
| 5072 } | |
| 5073 result.placeholder = placeholder; | |
| 5074 return result; | |
| 5075 } | |
| 5076 } | |
| 5077 var thisBinding = isBind ? thisArg : this; | |
| 5078 if (isBindKey) { | |
| 5079 func = thisBinding[key]; | |
| 5080 } | |
| 5081 if (argPos) { | |
| 5082 args = reorder(args, argPos); | |
| 5083 } | |
| 5084 if (isAry && ary < args.length) { | |
| 5085 args.length = ary; | |
| 5086 } | |
| 5087 var fn = (this && this !== root && this instanceof wrapper) ? (Ctor || createCtorWrapper(func)) : func; | |
| 5088 return fn.apply(thisBinding, args); | |
| 5089 } | |
| 5090 return wrapper; | |
| 5091 } | |
| 5092 | |
| 5093 /** | |
| 5094 * Creates the padding required for `string` based on the given `length`. | |
| 5095 * The `chars` string is truncated if the number of characters exceeds `length`. | |
| 5096 * | |
| 5097 * @private | |
| 5098 * @param {string} string The string to create padding for. | |
| 5099 * @param {number} [length=0] The padding length. | |
| 5100 * @param {string} [chars=' '] The string used as padding. | |
| 5101 * @returns {string} Returns the pad for `string`. | |
| 5102 */ | |
| 5103 function createPadding(string, length, chars) { | |
| 5104 var strLength = string.length; | |
| 5105 length = +length; | |
| 5106 | |
| 5107 if (strLength >= length || !nativeIsFinite(length)) { | |
| 5108 return ''; | |
| 5109 } | |
| 5110 var padLength = length - strLength; | |
| 5111 chars = chars == null ? ' ' : (chars + ''); | |
| 5112 return repeat(chars, ceil(padLength / chars.length)).slice(0, padLength); | |
| 5113 } | |
| 5114 | |
| 5115 /** | |
| 5116 * Creates a function that wraps `func` and invokes it with the optional `this` | |
| 5117 * binding of `thisArg` and the `partials` prepended to those provided to | |
| 5118 * the wrapper. | |
| 5119 * | |
| 5120 * @private | |
| 5121 * @param {Function} func The function to partially apply arguments to. | |
| 5122 * @param {number} bitmask The bitmask of flags. See `createWrapper` for more details. | |
| 5123 * @param {*} thisArg The `this` binding of `func`. | |
| 5124 * @param {Array} partials The arguments to prepend to those provided to the new function. | |
| 5125 * @returns {Function} Returns the new bound function. | |
| 5126 */ | |
| 5127 function createPartialWrapper(func, bitmask, thisArg, partials) { | |
| 5128 var isBind = bitmask & BIND_FLAG, | |
| 5129 Ctor = createCtorWrapper(func); | |
| 5130 | |
| 5131 function wrapper() { | |
| 5132 // Avoid `arguments` object use disqualifying optimizations by | |
| 5133 // converting it to an array before providing it `func`. | |
| 5134 var argsIndex = -1, | |
| 5135 argsLength = arguments.length, | |
| 5136 leftIndex = -1, | |
| 5137 leftLength = partials.length, | |
| 5138 args = Array(argsLength + leftLength); | |
| 5139 | |
| 5140 while (++leftIndex < leftLength) { | |
| 5141 args[leftIndex] = partials[leftIndex]; | |
| 5142 } | |
| 5143 while (argsLength--) { | |
| 5144 args[leftIndex++] = arguments[++argsIndex]; | |
| 5145 } | |
| 5146 var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; | |
| 5147 return fn.apply(isBind ? thisArg : this, args); | |
| 5148 } | |
| 5149 return wrapper; | |
| 5150 } | |
| 5151 | |
| 5152 /** | |
| 5153 * Creates a `_.sortedIndex` or `_.sortedLastIndex` function. | |
| 5154 * | |
| 5155 * @private | |
| 5156 * @param {boolean} [retHighest] Specify returning the highest qualified index. | |
| 5157 * @returns {Function} Returns the new index function. | |
| 5158 */ | |
| 5159 function createSortedIndex(retHighest) { | |
| 5160 return function(array, value, iteratee, thisArg) { | |
| 5161 var func = getCallback(iteratee); | |
| 5162 return (func === baseCallback && iteratee == null) | |
| 5163 ? binaryIndex(array, value, retHighest) | |
| 5164 : binaryIndexBy(array, value, func(iteratee, thisArg, 1), retHighest); | |
| 5165 }; | |
| 5166 } | |
| 5167 | |
| 5168 /** | |
| 5169 * Creates a function that either curries or invokes `func` with optional | |
| 5170 * `this` binding and partially applied arguments. | |
| 5171 * | |
| 5172 * @private | |
| 5173 * @param {Function|string} func The function or method name to reference. | |
| 5174 * @param {number} bitmask The bitmask of flags. | |
| 5175 * The bitmask may be composed of the following flags: | |
| 5176 * 1 - `_.bind` | |
| 5177 * 2 - `_.bindKey` | |
| 5178 * 4 - `_.curry` or `_.curryRight` of a bound function | |
| 5179 * 8 - `_.curry` | |
| 5180 * 16 - `_.curryRight` | |
| 5181 * 32 - `_.partial` | |
| 5182 * 64 - `_.partialRight` | |
| 5183 * 128 - `_.rearg` | |
| 5184 * 256 - `_.ary` | |
| 5185 * @param {*} [thisArg] The `this` binding of `func`. | |
| 5186 * @param {Array} [partials] The arguments to be partially applied. | |
| 5187 * @param {Array} [holders] The `partials` placeholder indexes. | |
| 5188 * @param {Array} [argPos] The argument positions of the new function. | |
| 5189 * @param {number} [ary] The arity cap of `func`. | |
| 5190 * @param {number} [arity] The arity of `func`. | |
| 5191 * @returns {Function} Returns the new wrapped function. | |
| 5192 */ | |
| 5193 function createWrapper(func, bitmask, thisArg, partials, holders, argPos, ary, arity) { | |
| 5194 var isBindKey = bitmask & BIND_KEY_FLAG; | |
| 5195 if (!isBindKey && typeof func != 'function') { | |
| 5196 throw new TypeError(FUNC_ERROR_TEXT); | |
| 5197 } | |
| 5198 var length = partials ? partials.length : 0; | |
| 5199 if (!length) { | |
| 5200 bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG); | |
| 5201 partials = holders = null; | |
| 5202 } | |
| 5203 length -= (holders ? holders.length : 0); | |
| 5204 if (bitmask & PARTIAL_RIGHT_FLAG) { | |
| 5205 var partialsRight = partials, | |
| 5206 holdersRight = holders; | |
| 5207 | |
| 5208 partials = holders = null; | |
| 5209 } | |
| 5210 var data = isBindKey ? null : getData(func), | |
| 5211 newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity]; | |
| 5212 | |
| 5213 if (data) { | |
| 5214 mergeData(newData, data); | |
| 5215 bitmask = newData[1]; | |
| 5216 arity = newData[9]; | |
| 5217 } | |
| 5218 newData[9] = arity == null | |
| 5219 ? (isBindKey ? 0 : func.length) | |
| 5220 : (nativeMax(arity - length, 0) || 0); | |
| 5221 | |
| 5222 if (bitmask == BIND_FLAG) { | |
| 5223 var result = createBindWrapper(newData[0], newData[2]); | |
| 5224 } else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !newData[4].length) { | |
| 5225 result = createPartialWrapper.apply(undefined, newData); | |
| 5226 } else { | |
| 5227 result = createHybridWrapper.apply(undefined, newData); | |
| 5228 } | |
| 5229 var setter = data ? baseSetData : setData; | |
| 5230 return setter(result, newData); | |
| 5231 } | |
| 5232 | |
| 5233 /** | |
| 5234 * A specialized version of `baseIsEqualDeep` for arrays with support for | |
| 5235 * partial deep comparisons. | |
| 5236 * | |
| 5237 * @private | |
| 5238 * @param {Array} array The array to compare. | |
| 5239 * @param {Array} other The other array to compare. | |
| 5240 * @param {Function} equalFunc The function to determine equivalents of values. | |
| 5241 * @param {Function} [customizer] The function to customize comparing arrays. | |
| 5242 * @param {boolean} [isLoose] Specify performing partial comparisons. | |
| 5243 * @param {Array} [stackA] Tracks traversed `value` objects. | |
| 5244 * @param {Array} [stackB] Tracks traversed `other` objects. | |
| 5245 * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`. | |
| 5246 */ | |
| 5247 function equalArrays(array, other, equalFunc, customizer, isLoose, stackA, stackB) { | |
| 5248 var index = -1, | |
| 5249 arrLength = array.length, | |
| 5250 othLength = other.length, | |
| 5251 result = true; | |
| 5252 | |
| 5253 if (arrLength != othLength && !(isLoose && othLength > arrLength)) { | |
| 5254 return false; | |
| 5255 } | |
| 5256 // Deep compare the contents, ignoring non-numeric properties. | |
| 5257 while (result && ++index < arrLength) { | |
| 5258 var arrValue = array[index], | |
| 5259 othValue = other[index]; | |
| 5260 | |
| 5261 result = undefined; | |
| 5262 if (customizer) { | |
| 5263 result = isLoose | |
| 5264 ? customizer(othValue, arrValue, index) | |
| 5265 : customizer(arrValue, othValue, index); | |
| 5266 } | |
| 5267 if (result === undefined) { | |
| 5268 // Recursively compare arrays (susceptible to call stack limits). | |
| 5269 if (isLoose) { | |
| 5270 var othIndex = othLength; | |
| 5271 while (othIndex--) { | |
| 5272 othValue = other[othIndex]; | |
| 5273 result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isLoose, stackA, stackB); | |
| 5274 if (result) { | |
| 5275 break; | |
| 5276 } | |
| 5277 } | |
| 5278 } else { | |
| 5279 result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isLoose, stackA, stackB); | |
| 5280 } | |
| 5281 } | |
| 5282 } | |
| 5283 return !!result; | |
| 5284 } | |
| 5285 | |
| 5286 /** | |
| 5287 * A specialized version of `baseIsEqualDeep` for comparing objects of | |
| 5288 * the same `toStringTag`. | |
| 5289 * | |
| 5290 * **Note:** This function only supports comparing values with tags of | |
| 5291 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. | |
| 5292 * | |
| 5293 * @private | |
| 5294 * @param {Object} value The object to compare. | |
| 5295 * @param {Object} other The other object to compare. | |
| 5296 * @param {string} tag The `toStringTag` of the objects to compare. | |
| 5297 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. | |
| 5298 */ | |
| 5299 function equalByTag(object, other, tag) { | |
| 5300 switch (tag) { | |
| 5301 case boolTag: | |
| 5302 case dateTag: | |
| 5303 // Coerce dates and booleans to numbers, dates to milliseconds and booleans | |
| 5304 // to `1` or `0` treating invalid dates coerced to `NaN` as not equal. | |
| 5305 return +object == +other; | |
| 5306 | |
| 5307 case errorTag: | |
| 5308 return object.name == other.name && object.message == other.message; | |
| 5309 | |
| 5310 case numberTag: | |
| 5311 // Treat `NaN` vs. `NaN` as equal. | |
| 5312 return (object != +object) | |
| 5313 ? other != +other | |
| 5314 // But, treat `-0` vs. `+0` as not equal. | |
| 5315 : (object == 0 ? ((1 / object) == (1 / other)) : object == +other); | |
| 5316 | |
| 5317 case regexpTag: | |
| 5318 case stringTag: | |
| 5319 // Coerce regexes to strings and treat strings primitives and string | |
| 5320 // objects as equal. See https://es5.github.io/#x15.10.6.4 for more details. | |
| 5321 return object == (other + ''); | |
| 5322 } | |
| 5323 return false; | |
| 5324 } | |
| 5325 | |
| 5326 /** | |
| 5327 * A specialized version of `baseIsEqualDeep` for objects with support for | |
| 5328 * partial deep comparisons. | |
| 5329 * | |
| 5330 * @private | |
| 5331 * @param {Object} object The object to compare. | |
| 5332 * @param {Object} other The other object to compare. | |
| 5333 * @param {Function} equalFunc The function to determine equivalents of values. | |
| 5334 * @param {Function} [customizer] The function to customize comparing values. | |
| 5335 * @param {boolean} [isLoose] Specify performing partial comparisons. | |
| 5336 * @param {Array} [stackA] Tracks traversed `value` objects. | |
| 5337 * @param {Array} [stackB] Tracks traversed `other` objects. | |
| 5338 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. | |
| 5339 */ | |
| 5340 function equalObjects(object, other, equalFunc, customizer, isLoose, stackA, stackB) { | |
| 5341 var objProps = keys(object), | |
| 5342 objLength = objProps.length, | |
| 5343 othProps = keys(other), | |
| 5344 othLength = othProps.length; | |
| 5345 | |
| 5346 if (objLength != othLength && !isLoose) { | |
| 5347 return false; | |
| 5348 } | |
| 5349 var skipCtor = isLoose, | |
| 5350 index = -1; | |
| 5351 | |
| 5352 while (++index < objLength) { | |
| 5353 var key = objProps[index], | |
| 5354 result = isLoose ? key in other : hasOwnProperty.call(other, key); | |
| 5355 | |
| 5356 if (result) { | |
| 5357 var objValue = object[key], | |
| 5358 othValue = other[key]; | |
| 5359 | |
| 5360 result = undefined; | |
| 5361 if (customizer) { | |
| 5362 result = isLoose | |
| 5363 ? customizer(othValue, objValue, key) | |
| 5364 : customizer(objValue, othValue, key); | |
| 5365 } | |
| 5366 if (result === undefined) { | |
| 5367 // Recursively compare objects (susceptible to call stack limits). | |
| 5368 result = (objValue && objValue === othValue) || equalFunc(objValue, othValue, customizer, isLoose, stackA, stackB); | |
| 5369 } | |
| 5370 } | |
| 5371 if (!result) { | |
| 5372 return false; | |
| 5373 } | |
| 5374 skipCtor || (skipCtor = key == 'constructor'); | |
| 5375 } | |
| 5376 if (!skipCtor) { | |
| 5377 var objCtor = object.constructor, | |
| 5378 othCtor = other.constructor; | |
| 5379 | |
| 5380 // Non `Object` object instances with different constructors are not equal. | |
| 5381 if (objCtor != othCtor && | |
| 5382 ('constructor' in object && 'constructor' in other) && | |
| 5383 !(typeof objCtor == 'function' && objCtor instanceof objCtor && | |
| 5384 typeof othCtor == 'function' && othCtor instanceof othCtor)) { | |
| 5385 return false; | |
| 5386 } | |
| 5387 } | |
| 5388 return true; | |
| 5389 } | |
| 5390 | |
| 5391 /** | |
| 5392 * Gets the extremum value of `collection` invoking `iteratee` for each value | |
| 5393 * in `collection` to generate the criterion by which the value is ranked. | |
| 5394 * The `iteratee` is invoked with three arguments: (value, index, collection). | |
| 5395 * | |
| 5396 * @private | |
| 5397 * @param {Array|Object|string} collection The collection to iterate over. | |
| 5398 * @param {Function} iteratee The function invoked per iteration. | |
| 5399 * @param {boolean} [isMin] Specify returning the minimum, instead of the | |
| 5400 * maximum, extremum value. | |
| 5401 * @returns {*} Returns the extremum value. | |
| 5402 */ | |
| 5403 function extremumBy(collection, iteratee, isMin) { | |
| 5404 var exValue = isMin ? POSITIVE_INFINITY : NEGATIVE_INFINITY, | |
| 5405 computed = exValue, | |
| 5406 result = computed; | |
| 5407 | |
| 5408 baseEach(collection, function(value, index, collection) { | |
| 5409 var current = iteratee(value, index, collection); | |
| 5410 if ((isMin ? (current < computed) : (current > computed)) || | |
| 5411 (current === exValue && current === result)) { | |
| 5412 computed = current; | |
| 5413 result = value; | |
| 5414 } | |
| 5415 }); | |
| 5416 return result; | |
| 5417 } | |
| 5418 | |
| 5419 /** | |
| 5420 * Gets the appropriate "callback" function. If the `_.callback` method is | |
| 5421 * customized this function returns the custom method, otherwise it returns | |
| 5422 * the `baseCallback` function. If arguments are provided the chosen function | |
| 5423 * is invoked with them and its result is returned. | |
| 5424 * | |
| 5425 * @private | |
| 5426 * @returns {Function} Returns the chosen function or its result. | |
| 5427 */ | |
| 5428 function getCallback(func, thisArg, argCount) { | |
| 5429 var result = lodash.callback || callback; | |
| 5430 result = result === callback ? baseCallback : result; | |
| 5431 return argCount ? result(func, thisArg, argCount) : result; | |
| 5432 } | |
| 5433 | |
| 5434 /** | |
| 5435 * Gets metadata for `func`. | |
| 5436 * | |
| 5437 * @private | |
| 5438 * @param {Function} func The function to query. | |
| 5439 * @returns {*} Returns the metadata for `func`. | |
| 5440 */ | |
| 5441 var getData = !metaMap ? noop : function(func) { | |
| 5442 return metaMap.get(func); | |
| 5443 }; | |
| 5444 | |
| 5445 /** | |
| 5446 * Gets the name of `func`. | |
| 5447 * | |
| 5448 * @private | |
| 5449 * @param {Function} func The function to query. | |
| 5450 * @returns {string} Returns the function name. | |
| 5451 */ | |
| 5452 var getFuncName = (function() { | |
| 5453 if (!support.funcNames) { | |
| 5454 return constant(''); | |
| 5455 } | |
| 5456 if (constant.name == 'constant') { | |
| 5457 return baseProperty('name'); | |
| 5458 } | |
| 5459 return function(func) { | |
| 5460 var result = func.name, | |
| 5461 array = realNames[result], | |
| 5462 length = array ? array.length : 0; | |
| 5463 | |
| 5464 while (length--) { | |
| 5465 var data = array[length], | |
| 5466 otherFunc = data.func; | |
| 5467 | |
| 5468 if (otherFunc == null || otherFunc == func) { | |
| 5469 return data.name; | |
| 5470 } | |
| 5471 } | |
| 5472 return result; | |
| 5473 }; | |
| 5474 }()); | |
| 5475 | |
| 5476 /** | |
| 5477 * Gets the appropriate "indexOf" function. If the `_.indexOf` method is | |
| 5478 * customized this function returns the custom method, otherwise it returns | |
| 5479 * the `baseIndexOf` function. If arguments are provided the chosen function | |
| 5480 * is invoked with them and its result is returned. | |
| 5481 * | |
| 5482 * @private | |
| 5483 * @returns {Function|number} Returns the chosen function or its result. | |
| 5484 */ | |
| 5485 function getIndexOf(collection, target, fromIndex) { | |
| 5486 var result = lodash.indexOf || indexOf; | |
| 5487 result = result === indexOf ? baseIndexOf : result; | |
| 5488 return collection ? result(collection, target, fromIndex) : result; | |
| 5489 } | |
| 5490 | |
| 5491 /** | |
| 5492 * Gets the "length" property value of `object`. | |
| 5493 * | |
| 5494 * **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) | |
| 5495 * in Safari on iOS 8.1 ARM64. | |
| 5496 * | |
| 5497 * @private | |
| 5498 * @param {Object} object The object to query. | |
| 5499 * @returns {*} Returns the "length" value. | |
| 5500 */ | |
| 5501 var getLength = baseProperty('length'); | |
| 5502 | |
| 5503 /** | |
| 5504 * Creates an array of the own symbols of `object`. | |
| 5505 * | |
| 5506 * @private | |
| 5507 * @param {Object} object The object to query. | |
| 5508 * @returns {Array} Returns the array of symbols. | |
| 5509 */ | |
| 5510 var getSymbols = !getOwnPropertySymbols ? constant([]) : function(object) { | |
| 5511 return getOwnPropertySymbols(toObject(object)); | |
| 5512 }; | |
| 5513 | |
| 5514 /** | |
| 5515 * Gets the view, applying any `transforms` to the `start` and `end` positions. | |
| 5516 * | |
| 5517 * @private | |
| 5518 * @param {number} start The start of the view. | |
| 5519 * @param {number} end The end of the view. | |
| 5520 * @param {Array} [transforms] The transformations to apply to the view. | |
| 5521 * @returns {Object} Returns an object containing the `start` and `end` | |
| 5522 * positions of the view. | |
| 5523 */ | |
| 5524 function getView(start, end, transforms) { | |
| 5525 var index = -1, | |
| 5526 length = transforms ? transforms.length : 0; | |
| 5527 | |
| 5528 while (++index < length) { | |
| 5529 var data = transforms[index], | |
| 5530 size = data.size; | |
| 5531 | |
| 5532 switch (data.type) { | |
| 5533 case 'drop': start += size; break; | |
| 5534 case 'dropRight': end -= size; break; | |
| 5535 case 'take': end = nativeMin(end, start + size); break; | |
| 5536 case 'takeRight': start = nativeMax(start, end - size); break; | |
| 5537 } | |
| 5538 } | |
| 5539 return { 'start': start, 'end': end }; | |
| 5540 } | |
| 5541 | |
| 5542 /** | |
| 5543 * Initializes an array clone. | |
| 5544 * | |
| 5545 * @private | |
| 5546 * @param {Array} array The array to clone. | |
| 5547 * @returns {Array} Returns the initialized clone. | |
| 5548 */ | |
| 5549 function initCloneArray(array) { | |
| 5550 var length = array.length, | |
| 5551 result = new array.constructor(length); | |
| 5552 | |
| 5553 // Add array properties assigned by `RegExp#exec`. | |
| 5554 if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) { | |
| 5555 result.index = array.index; | |
| 5556 result.input = array.input; | |
| 5557 } | |
| 5558 return result; | |
| 5559 } | |
| 5560 | |
| 5561 /** | |
| 5562 * Initializes an object clone. | |
| 5563 * | |
| 5564 * @private | |
| 5565 * @param {Object} object The object to clone. | |
| 5566 * @returns {Object} Returns the initialized clone. | |
| 5567 */ | |
| 5568 function initCloneObject(object) { | |
| 5569 var Ctor = object.constructor; | |
| 5570 if (!(typeof Ctor == 'function' && Ctor instanceof Ctor)) { | |
| 5571 Ctor = Object; | |
| 5572 } | |
| 5573 return new Ctor; | |
| 5574 } | |
| 5575 | |
| 5576 /** | |
| 5577 * Initializes an object clone based on its `toStringTag`. | |
| 5578 * | |
| 5579 * **Note:** This function only supports cloning values with tags of | |
| 5580 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. | |
| 5581 * | |
| 5582 * @private | |
| 5583 * @param {Object} object The object to clone. | |
| 5584 * @param {string} tag The `toStringTag` of the object to clone. | |
| 5585 * @param {boolean} [isDeep] Specify a deep clone. | |
| 5586 * @returns {Object} Returns the initialized clone. | |
| 5587 */ | |
| 5588 function initCloneByTag(object, tag, isDeep) { | |
| 5589 var Ctor = object.constructor; | |
| 5590 switch (tag) { | |
| 5591 case arrayBufferTag: | |
| 5592 return bufferClone(object); | |
| 5593 | |
| 5594 case boolTag: | |
| 5595 case dateTag: | |
| 5596 return new Ctor(+object); | |
| 5597 | |
| 5598 case float32Tag: case float64Tag: | |
| 5599 case int8Tag: case int16Tag: case int32Tag: | |
| 5600 case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag: | |
| 5601 var buffer = object.buffer; | |
| 5602 return new Ctor(isDeep ? bufferClone(buffer) : buffer, object.byteOffset, object.length); | |
| 5603 | |
| 5604 case numberTag: | |
| 5605 case stringTag: | |
| 5606 return new Ctor(object); | |
| 5607 | |
| 5608 case regexpTag: | |
| 5609 var result = new Ctor(object.source, reFlags.exec(object)); | |
| 5610 result.lastIndex = object.lastIndex; | |
| 5611 } | |
| 5612 return result; | |
| 5613 } | |
| 5614 | |
| 5615 /** | |
| 5616 * Invokes the method at `path` on `object`. | |
| 5617 * | |
| 5618 * @private | |
| 5619 * @param {Object} object The object to query. | |
| 5620 * @param {Array|string} path The path of the method to invoke. | |
| 5621 * @param {Array} args The arguments to invoke the method with. | |
| 5622 * @returns {*} Returns the result of the invoked method. | |
| 5623 */ | |
| 5624 function invokePath(object, path, args) { | |
| 5625 if (object != null && !isKey(path, object)) { | |
| 5626 path = toPath(path); | |
| 5627 object = path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1)); | |
| 5628 path = last(path); | |
| 5629 } | |
| 5630 var func = object == null ? object : object[path]; | |
| 5631 return func == null ? undefined : func.apply(object, args); | |
| 5632 } | |
| 5633 | |
| 5634 /** | |
| 5635 * Checks if `value` is a valid array-like index. | |
| 5636 * | |
| 5637 * @private | |
| 5638 * @param {*} value The value to check. | |
| 5639 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. | |
| 5640 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. | |
| 5641 */ | |
| 5642 function isIndex(value, length) { | |
| 5643 value = +value; | |
| 5644 length = length == null ? MAX_SAFE_INTEGER : length; | |
| 5645 return value > -1 && value % 1 == 0 && value < length; | |
| 5646 } | |
| 5647 | |
| 5648 /** | |
| 5649 * Checks if the provided arguments are from an iteratee call. | |
| 5650 * | |
| 5651 * @private | |
| 5652 * @param {*} value The potential iteratee value argument. | |
| 5653 * @param {*} index The potential iteratee index or key argument. | |
| 5654 * @param {*} object The potential iteratee object argument. | |
| 5655 * @returns {boolean} Returns `true` if the arguments are from an iteratee call, else `false`. | |
| 5656 */ | |
| 5657 function isIterateeCall(value, index, object) { | |
| 5658 if (!isObject(object)) { | |
| 5659 return false; | |
| 5660 } | |
| 5661 var type = typeof index; | |
| 5662 if (type == 'number') { | |
| 5663 var length = getLength(object), | |
| 5664 prereq = isLength(length) && isIndex(index, length); | |
| 5665 } else { | |
| 5666 prereq = type == 'string' && index in object; | |
| 5667 } | |
| 5668 if (prereq) { | |
| 5669 var other = object[index]; | |
| 5670 return value === value ? (value === other) : (other !== other); | |
| 5671 } | |
| 5672 return false; | |
| 5673 } | |
| 5674 | |
| 5675 /** | |
| 5676 * Checks if `value` is a property name and not a property path. | |
| 5677 * | |
| 5678 * @private | |
| 5679 * @param {*} value The value to check. | |
| 5680 * @param {Object} [object] The object to query keys on. | |
| 5681 * @returns {boolean} Returns `true` if `value` is a property name, else `false`. | |
| 5682 */ | |
| 5683 function isKey(value, object) { | |
| 5684 var type = typeof value; | |
| 5685 if ((type == 'string' && reIsPlainProp.test(value)) || type == 'number') { | |
| 5686 return true; | |
| 5687 } | |
| 5688 if (isArray(value)) { | |
| 5689 return false; | |
| 5690 } | |
| 5691 var result = !reIsDeepProp.test(value); | |
| 5692 return result || (object != null && value in toObject(object)); | |
| 5693 } | |
| 5694 | |
| 5695 /** | |
| 5696 * Checks if `func` has a lazy counterpart. | |
| 5697 * | |
| 5698 * @private | |
| 5699 * @param {Function} func The function to check. | |
| 5700 * @returns {boolean} Returns `true` if `func` has a lazy counterpart, else `false`. | |
| 5701 */ | |
| 5702 function isLaziable(func) { | |
| 5703 var funcName = getFuncName(func); | |
| 5704 return !!funcName && func === lodash[funcName] && funcName in LazyWrapper.prototype; | |
| 5705 } | |
| 5706 | |
| 5707 /** | |
| 5708 * Checks if `value` is a valid array-like length. | |
| 5709 * | |
| 5710 * **Note:** This function is based on [`ToLength`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength). | |
| 5711 * | |
| 5712 * @private | |
| 5713 * @param {*} value The value to check. | |
| 5714 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. | |
| 5715 */ | |
| 5716 function isLength(value) { | |
| 5717 return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER; | |
| 5718 } | |
| 5719 | |
| 5720 /** | |
| 5721 * Checks if `value` is suitable for strict equality comparisons, i.e. `===`. | |
| 5722 * | |
| 5723 * @private | |
| 5724 * @param {*} value The value to check. | |
| 5725 * @returns {boolean} Returns `true` if `value` if suitable for strict | |
| 5726 * equality comparisons, else `false`. | |
| 5727 */ | |
| 5728 function isStrictComparable(value) { | |
| 5729 return value === value && (value === 0 ? ((1 / value) > 0) : !isObject(value)); | |
| 5730 } | |
| 5731 | |
| 5732 /** | |
| 5733 * Merges the function metadata of `source` into `data`. | |
| 5734 * | |
| 5735 * Merging metadata reduces the number of wrappers required to invoke a function. | |
| 5736 * This is possible because methods like `_.bind`, `_.curry`, and `_.partial` | |
| 5737 * may be applied regardless of execution order. Methods like `_.ary` and `_.rearg` | |
| 5738 * augment function arguments, making the order in which they are executed important, | |
| 5739 * preventing the merging of metadata. However, we make an exception for a safe | |
| 5740 * common case where curried functions have `_.ary` and or `_.rearg` applied. | |
| 5741 * | |
| 5742 * @private | |
| 5743 * @param {Array} data The destination metadata. | |
| 5744 * @param {Array} source The source metadata. | |
| 5745 * @returns {Array} Returns `data`. | |
| 5746 */ | |
| 5747 function mergeData(data, source) { | |
| 5748 var bitmask = data[1], | |
| 5749 srcBitmask = source[1], | |
| 5750 newBitmask = bitmask | srcBitmask, | |
| 5751 isCommon = newBitmask < ARY_FLAG; | |
| 5752 | |
| 5753 var isCombo = | |
| 5754 (srcBitmask == ARY_FLAG && bitmask == CURRY_FLAG) || | |
| 5755 (srcBitmask == ARY_FLAG && bitmask == REARG_FLAG && data[7].length <= source[8]) || | |
| 5756 (srcBitmask == (ARY_FLAG | REARG_FLAG) && bitmask == CURRY_FLAG); | |
| 5757 | |
| 5758 // Exit early if metadata can't be merged. | |
| 5759 if (!(isCommon || isCombo)) { | |
| 5760 return data; | |
| 5761 } | |
| 5762 // Use source `thisArg` if available. | |
| 5763 if (srcBitmask & BIND_FLAG) { | |
| 5764 data[2] = source[2]; | |
| 5765 // Set when currying a bound function. | |
| 5766 newBitmask |= (bitmask & BIND_FLAG) ? 0 : CURRY_BOUND_FLAG; | |
| 5767 } | |
| 5768 // Compose partial arguments. | |
| 5769 var value = source[3]; | |
| 5770 if (value) { | |
| 5771 var partials = data[3]; | |
| 5772 data[3] = partials ? composeArgs(partials, value, source[4]) : arrayCopy(value); | |
| 5773 data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : arrayCopy(source[4]); | |
| 5774 } | |
| 5775 // Compose partial right arguments. | |
| 5776 value = source[5]; | |
| 5777 if (value) { | |
| 5778 partials = data[5]; | |
| 5779 data[5] = partials ? composeArgsRight(partials, value, source[6]) : arrayCopy(value); | |
| 5780 data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : arrayCopy(source[6]); | |
| 5781 } | |
| 5782 // Use source `argPos` if available. | |
| 5783 value = source[7]; | |
| 5784 if (value) { | |
| 5785 data[7] = arrayCopy(value); | |
| 5786 } | |
| 5787 // Use source `ary` if it's smaller. | |
| 5788 if (srcBitmask & ARY_FLAG) { | |
| 5789 data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]); | |
| 5790 } | |
| 5791 // Use source `arity` if one is not provided. | |
| 5792 if (data[9] == null) { | |
| 5793 data[9] = source[9]; | |
| 5794 } | |
| 5795 // Use source `func` and merge bitmasks. | |
| 5796 data[0] = source[0]; | |
| 5797 data[1] = newBitmask; | |
| 5798 | |
| 5799 return data; | |
| 5800 } | |
| 5801 | |
| 5802 /** | |
| 5803 * A specialized version of `_.pick` that picks `object` properties specified | |
| 5804 * by `props`. | |
| 5805 * | |
| 5806 * @private | |
| 5807 * @param {Object} object The source object. | |
| 5808 * @param {string[]} props The property names to pick. | |
| 5809 * @returns {Object} Returns the new object. | |
| 5810 */ | |
| 5811 function pickByArray(object, props) { | |
| 5812 object = toObject(object); | |
| 5813 | |
| 5814 var index = -1, | |
| 5815 length = props.length, | |
| 5816 result = {}; | |
| 5817 | |
| 5818 while (++index < length) { | |
| 5819 var key = props[index]; | |
| 5820 if (key in object) { | |
| 5821 result[key] = object[key]; | |
| 5822 } | |
| 5823 } | |
| 5824 return result; | |
| 5825 } | |
| 5826 | |
| 5827 /** | |
| 5828 * A specialized version of `_.pick` that picks `object` properties `predicate` | |
| 5829 * returns truthy for. | |
| 5830 * | |
| 5831 * @private | |
| 5832 * @param {Object} object The source object. | |
| 5833 * @param {Function} predicate The function invoked per iteration. | |
| 5834 * @returns {Object} Returns the new object. | |
| 5835 */ | |
| 5836 function pickByCallback(object, predicate) { | |
| 5837 var result = {}; | |
| 5838 baseForIn(object, function(value, key, object) { | |
| 5839 if (predicate(value, key, object)) { | |
| 5840 result[key] = value; | |
| 5841 } | |
| 5842 }); | |
| 5843 return result; | |
| 5844 } | |
| 5845 | |
| 5846 /** | |
| 5847 * Reorder `array` according to the specified indexes where the element at | |
| 5848 * the first index is assigned as the first element, the element at | |
| 5849 * the second index is assigned as the second element, and so on. | |
| 5850 * | |
| 5851 * @private | |
| 5852 * @param {Array} array The array to reorder. | |
| 5853 * @param {Array} indexes The arranged array indexes. | |
| 5854 * @returns {Array} Returns `array`. | |
| 5855 */ | |
| 5856 function reorder(array, indexes) { | |
| 5857 var arrLength = array.length, | |
| 5858 length = nativeMin(indexes.length, arrLength), | |
| 5859 oldArray = arrayCopy(array); | |
| 5860 | |
| 5861 while (length--) { | |
| 5862 var index = indexes[length]; | |
| 5863 array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined; | |
| 5864 } | |
| 5865 return array; | |
| 5866 } | |
| 5867 | |
| 5868 /** | |
| 5869 * Sets metadata for `func`. | |
| 5870 * | |
| 5871 * **Note:** If this function becomes hot, i.e. is invoked a lot in a short | |
| 5872 * period of time, it will trip its breaker and transition to an identity function | |
| 5873 * to avoid garbage collection pauses in V8. See [V8 issue 2070](https://code.google.com/p/v8/issues/detail?id=2070) | |
| 5874 * for more details. | |
| 5875 * | |
| 5876 * @private | |
| 5877 * @param {Function} func The function to associate metadata with. | |
| 5878 * @param {*} data The metadata. | |
| 5879 * @returns {Function} Returns `func`. | |
| 5880 */ | |
| 5881 var setData = (function() { | |
| 5882 var count = 0, | |
| 5883 lastCalled = 0; | |
| 5884 | |
| 5885 return function(key, value) { | |
| 5886 var stamp = now(), | |
| 5887 remaining = HOT_SPAN - (stamp - lastCalled); | |
| 5888 | |
| 5889 lastCalled = stamp; | |
| 5890 if (remaining > 0) { | |
| 5891 if (++count >= HOT_COUNT) { | |
| 5892 return key; | |
| 5893 } | |
| 5894 } else { | |
| 5895 count = 0; | |
| 5896 } | |
| 5897 return baseSetData(key, value); | |
| 5898 }; | |
| 5899 }()); | |
| 5900 | |
| 5901 /** | |
| 5902 * A fallback implementation of `_.isPlainObject` which checks if `value` | |
| 5903 * is an object created by the `Object` constructor or has a `[[Prototype]]` | |
| 5904 * of `null`. | |
| 5905 * | |
| 5906 * @private | |
| 5907 * @param {*} value The value to check. | |
| 5908 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. | |
| 5909 */ | |
| 5910 function shimIsPlainObject(value) { | |
| 5911 var Ctor, | |
| 5912 support = lodash.support; | |
| 5913 | |
| 5914 // Exit early for non `Object` objects. | |
| 5915 if (!(isObjectLike(value) && objToString.call(value) == objectTag) || | |
| 5916 (!hasOwnProperty.call(value, 'constructor') && | |
| 5917 (Ctor = value.constructor, typeof Ctor == 'function' && !(Ctor instanceof Ctor)))) { | |
| 5918 return false; | |
| 5919 } | |
| 5920 // IE < 9 iterates inherited properties before own properties. If the first | |
| 5921 // iterated property is an object's own property then there are no inherited | |
| 5922 // enumerable properties. | |
| 5923 var result; | |
| 5924 // In most environments an object's own properties are iterated before | |
| 5925 // its inherited properties. If the last iterated property is an object's | |
| 5926 // own property then there are no inherited enumerable properties. | |
| 5927 baseForIn(value, function(subValue, key) { | |
| 5928 result = key; | |
| 5929 }); | |
| 5930 return result === undefined || hasOwnProperty.call(value, result); | |
| 5931 } | |
| 5932 | |
| 5933 /** | |
| 5934 * A fallback implementation of `Object.keys` which creates an array of the | |
| 5935 * own enumerable property names of `object`. | |
| 5936 * | |
| 5937 * @private | |
| 5938 * @param {Object} object The object to query. | |
| 5939 * @returns {Array} Returns the array of property names. | |
| 5940 */ | |
| 5941 function shimKeys(object) { | |
| 5942 var props = keysIn(object), | |
| 5943 propsLength = props.length, | |
| 5944 length = propsLength && object.length, | |
| 5945 support = lodash.support; | |
| 5946 | |
| 5947 var allowIndexes = length && isLength(length) && | |
| 5948 (isArray(object) || (support.nonEnumArgs && isArguments(object))); | |
| 5949 | |
| 5950 var index = -1, | |
| 5951 result = []; | |
| 5952 | |
| 5953 while (++index < propsLength) { | |
| 5954 var key = props[index]; | |
| 5955 if ((allowIndexes && isIndex(key, length)) || hasOwnProperty.call(object, key)) { | |
| 5956 result.push(key); | |
| 5957 } | |
| 5958 } | |
| 5959 return result; | |
| 5960 } | |
| 5961 | |
| 5962 /** | |
| 5963 * Converts `value` to an array-like object if it is not one. | |
| 5964 * | |
| 5965 * @private | |
| 5966 * @param {*} value The value to process. | |
| 5967 * @returns {Array|Object} Returns the array-like object. | |
| 5968 */ | |
| 5969 function toIterable(value) { | |
| 5970 if (value == null) { | |
| 5971 return []; | |
| 5972 } | |
| 5973 if (!isLength(getLength(value))) { | |
| 5974 return values(value); | |
| 5975 } | |
| 5976 return isObject(value) ? value : Object(value); | |
| 5977 } | |
| 5978 | |
| 5979 /** | |
| 5980 * Converts `value` to an object if it is not one. | |
| 5981 * | |
| 5982 * @private | |
| 5983 * @param {*} value The value to process. | |
| 5984 * @returns {Object} Returns the object. | |
| 5985 */ | |
| 5986 function toObject(value) { | |
| 5987 return isObject(value) ? value : Object(value); | |
| 5988 } | |
| 5989 | |
| 5990 /** | |
| 5991 * Converts `value` to property path array if it is not one. | |
| 5992 * | |
| 5993 * @private | |
| 5994 * @param {*} value The value to process. | |
| 5995 * @returns {Array} Returns the property path array. | |
| 5996 */ | |
| 5997 function toPath(value) { | |
| 5998 if (isArray(value)) { | |
| 5999 return value; | |
| 6000 } | |
| 6001 var result = []; | |
| 6002 baseToString(value).replace(rePropName, function(match, number, quote, string) { | |
| 6003 result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match)); | |
| 6004 }); | |
| 6005 return result; | |
| 6006 } | |
| 6007 | |
| 6008 /** | |
| 6009 * Creates a clone of `wrapper`. | |
| 6010 * | |
| 6011 * @private | |
| 6012 * @param {Object} wrapper The wrapper to clone. | |
| 6013 * @returns {Object} Returns the cloned wrapper. | |
| 6014 */ | |
| 6015 function wrapperClone(wrapper) { | |
| 6016 return wrapper instanceof LazyWrapper | |
| 6017 ? wrapper.clone() | |
| 6018 : new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__, arrayCopy(wrapper.__actions__)); | |
| 6019 } | |
| 6020 | |
| 6021 /*------------------------------------------------------------------------*/ | |
| 6022 | |
| 6023 /** | |
| 6024 * Creates an array of elements split into groups the length of `size`. | |
| 6025 * If `collection` can't be split evenly, the final chunk will be the remaining | |
| 6026 * elements. | |
| 6027 * | |
| 6028 * @static | |
| 6029 * @memberOf _ | |
| 6030 * @category Array | |
| 6031 * @param {Array} array The array to process. | |
| 6032 * @param {number} [size=1] The length of each chunk. | |
| 6033 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 6034 * @returns {Array} Returns the new array containing chunks. | |
| 6035 * @example | |
| 6036 * | |
| 6037 * _.chunk(['a', 'b', 'c', 'd'], 2); | |
| 6038 * // => [['a', 'b'], ['c', 'd']] | |
| 6039 * | |
| 6040 * _.chunk(['a', 'b', 'c', 'd'], 3); | |
| 6041 * // => [['a', 'b', 'c'], ['d']] | |
| 6042 */ | |
| 6043 function chunk(array, size, guard) { | |
| 6044 if (guard ? isIterateeCall(array, size, guard) : size == null) { | |
| 6045 size = 1; | |
| 6046 } else { | |
| 6047 size = nativeMax(+size || 1, 1); | |
| 6048 } | |
| 6049 var index = 0, | |
| 6050 length = array ? array.length : 0, | |
| 6051 resIndex = -1, | |
| 6052 result = Array(ceil(length / size)); | |
| 6053 | |
| 6054 while (index < length) { | |
| 6055 result[++resIndex] = baseSlice(array, index, (index += size)); | |
| 6056 } | |
| 6057 return result; | |
| 6058 } | |
| 6059 | |
| 6060 /** | |
| 6061 * Creates an array with all falsey values removed. The values `false`, `null`, | |
| 6062 * `0`, `""`, `undefined`, and `NaN` are falsey. | |
| 6063 * | |
| 6064 * @static | |
| 6065 * @memberOf _ | |
| 6066 * @category Array | |
| 6067 * @param {Array} array The array to compact. | |
| 6068 * @returns {Array} Returns the new array of filtered values. | |
| 6069 * @example | |
| 6070 * | |
| 6071 * _.compact([0, 1, false, 2, '', 3]); | |
| 6072 * // => [1, 2, 3] | |
| 6073 */ | |
| 6074 function compact(array) { | |
| 6075 var index = -1, | |
| 6076 length = array ? array.length : 0, | |
| 6077 resIndex = -1, | |
| 6078 result = []; | |
| 6079 | |
| 6080 while (++index < length) { | |
| 6081 var value = array[index]; | |
| 6082 if (value) { | |
| 6083 result[++resIndex] = value; | |
| 6084 } | |
| 6085 } | |
| 6086 return result; | |
| 6087 } | |
| 6088 | |
| 6089 /** | |
| 6090 * Creates an array excluding all values of the provided arrays using | |
| 6091 * `SameValueZero` for equality comparisons. | |
| 6092 * | |
| 6093 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 6094 * comparisons are like strict equality comparisons, e.g. `===`, except that | |
| 6095 * `NaN` matches `NaN`. | |
| 6096 * | |
| 6097 * @static | |
| 6098 * @memberOf _ | |
| 6099 * @category Array | |
| 6100 * @param {Array} array The array to inspect. | |
| 6101 * @param {...Array} [values] The arrays of values to exclude. | |
| 6102 * @returns {Array} Returns the new array of filtered values. | |
| 6103 * @example | |
| 6104 * | |
| 6105 * _.difference([1, 2, 3], [4, 2]); | |
| 6106 * // => [1, 3] | |
| 6107 */ | |
| 6108 var difference = restParam(function(array, values) { | |
| 6109 return (isArray(array) || isArguments(array)) | |
| 6110 ? baseDifference(array, baseFlatten(values, false, true)) | |
| 6111 : []; | |
| 6112 }); | |
| 6113 | |
| 6114 /** | |
| 6115 * Creates a slice of `array` with `n` elements dropped from the beginning. | |
| 6116 * | |
| 6117 * @static | |
| 6118 * @memberOf _ | |
| 6119 * @category Array | |
| 6120 * @param {Array} array The array to query. | |
| 6121 * @param {number} [n=1] The number of elements to drop. | |
| 6122 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 6123 * @returns {Array} Returns the slice of `array`. | |
| 6124 * @example | |
| 6125 * | |
| 6126 * _.drop([1, 2, 3]); | |
| 6127 * // => [2, 3] | |
| 6128 * | |
| 6129 * _.drop([1, 2, 3], 2); | |
| 6130 * // => [3] | |
| 6131 * | |
| 6132 * _.drop([1, 2, 3], 5); | |
| 6133 * // => [] | |
| 6134 * | |
| 6135 * _.drop([1, 2, 3], 0); | |
| 6136 * // => [1, 2, 3] | |
| 6137 */ | |
| 6138 function drop(array, n, guard) { | |
| 6139 var length = array ? array.length : 0; | |
| 6140 if (!length) { | |
| 6141 return []; | |
| 6142 } | |
| 6143 if (guard ? isIterateeCall(array, n, guard) : n == null) { | |
| 6144 n = 1; | |
| 6145 } | |
| 6146 return baseSlice(array, n < 0 ? 0 : n); | |
| 6147 } | |
| 6148 | |
| 6149 /** | |
| 6150 * Creates a slice of `array` with `n` elements dropped from the end. | |
| 6151 * | |
| 6152 * @static | |
| 6153 * @memberOf _ | |
| 6154 * @category Array | |
| 6155 * @param {Array} array The array to query. | |
| 6156 * @param {number} [n=1] The number of elements to drop. | |
| 6157 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 6158 * @returns {Array} Returns the slice of `array`. | |
| 6159 * @example | |
| 6160 * | |
| 6161 * _.dropRight([1, 2, 3]); | |
| 6162 * // => [1, 2] | |
| 6163 * | |
| 6164 * _.dropRight([1, 2, 3], 2); | |
| 6165 * // => [1] | |
| 6166 * | |
| 6167 * _.dropRight([1, 2, 3], 5); | |
| 6168 * // => [] | |
| 6169 * | |
| 6170 * _.dropRight([1, 2, 3], 0); | |
| 6171 * // => [1, 2, 3] | |
| 6172 */ | |
| 6173 function dropRight(array, n, guard) { | |
| 6174 var length = array ? array.length : 0; | |
| 6175 if (!length) { | |
| 6176 return []; | |
| 6177 } | |
| 6178 if (guard ? isIterateeCall(array, n, guard) : n == null) { | |
| 6179 n = 1; | |
| 6180 } | |
| 6181 n = length - (+n || 0); | |
| 6182 return baseSlice(array, 0, n < 0 ? 0 : n); | |
| 6183 } | |
| 6184 | |
| 6185 /** | |
| 6186 * Creates a slice of `array` excluding elements dropped from the end. | |
| 6187 * Elements are dropped until `predicate` returns falsey. The predicate is | |
| 6188 * bound to `thisArg` and invoked with three arguments: (value, index, array). | |
| 6189 * | |
| 6190 * If a property name is provided for `predicate` the created `_.property` | |
| 6191 * style callback returns the property value of the given element. | |
| 6192 * | |
| 6193 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 6194 * style callback returns `true` for elements that have a matching property | |
| 6195 * value, else `false`. | |
| 6196 * | |
| 6197 * If an object is provided for `predicate` the created `_.matches` style | |
| 6198 * callback returns `true` for elements that match the properties of the given | |
| 6199 * object, else `false`. | |
| 6200 * | |
| 6201 * @static | |
| 6202 * @memberOf _ | |
| 6203 * @category Array | |
| 6204 * @param {Array} array The array to query. | |
| 6205 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 6206 * per iteration. | |
| 6207 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 6208 * @returns {Array} Returns the slice of `array`. | |
| 6209 * @example | |
| 6210 * | |
| 6211 * _.dropRightWhile([1, 2, 3], function(n) { | |
| 6212 * return n > 1; | |
| 6213 * }); | |
| 6214 * // => [1] | |
| 6215 * | |
| 6216 * var users = [ | |
| 6217 * { 'user': 'barney', 'active': true }, | |
| 6218 * { 'user': 'fred', 'active': false }, | |
| 6219 * { 'user': 'pebbles', 'active': false } | |
| 6220 * ]; | |
| 6221 * | |
| 6222 * // using the `_.matches` callback shorthand | |
| 6223 * _.pluck(_.dropRightWhile(users, { 'user': 'pebbles', 'active': false }), 'user'); | |
| 6224 * // => ['barney', 'fred'] | |
| 6225 * | |
| 6226 * // using the `_.matchesProperty` callback shorthand | |
| 6227 * _.pluck(_.dropRightWhile(users, 'active', false), 'user'); | |
| 6228 * // => ['barney'] | |
| 6229 * | |
| 6230 * // using the `_.property` callback shorthand | |
| 6231 * _.pluck(_.dropRightWhile(users, 'active'), 'user'); | |
| 6232 * // => ['barney', 'fred', 'pebbles'] | |
| 6233 */ | |
| 6234 function dropRightWhile(array, predicate, thisArg) { | |
| 6235 return (array && array.length) | |
| 6236 ? baseWhile(array, getCallback(predicate, thisArg, 3), true, true) | |
| 6237 : []; | |
| 6238 } | |
| 6239 | |
| 6240 /** | |
| 6241 * Creates a slice of `array` excluding elements dropped from the beginning. | |
| 6242 * Elements are dropped until `predicate` returns falsey. The predicate is | |
| 6243 * bound to `thisArg` and invoked with three arguments: (value, index, array). | |
| 6244 * | |
| 6245 * If a property name is provided for `predicate` the created `_.property` | |
| 6246 * style callback returns the property value of the given element. | |
| 6247 * | |
| 6248 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 6249 * style callback returns `true` for elements that have a matching property | |
| 6250 * value, else `false`. | |
| 6251 * | |
| 6252 * If an object is provided for `predicate` the created `_.matches` style | |
| 6253 * callback returns `true` for elements that have the properties of the given | |
| 6254 * object, else `false`. | |
| 6255 * | |
| 6256 * @static | |
| 6257 * @memberOf _ | |
| 6258 * @category Array | |
| 6259 * @param {Array} array The array to query. | |
| 6260 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 6261 * per iteration. | |
| 6262 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 6263 * @returns {Array} Returns the slice of `array`. | |
| 6264 * @example | |
| 6265 * | |
| 6266 * _.dropWhile([1, 2, 3], function(n) { | |
| 6267 * return n < 3; | |
| 6268 * }); | |
| 6269 * // => [3] | |
| 6270 * | |
| 6271 * var users = [ | |
| 6272 * { 'user': 'barney', 'active': false }, | |
| 6273 * { 'user': 'fred', 'active': false }, | |
| 6274 * { 'user': 'pebbles', 'active': true } | |
| 6275 * ]; | |
| 6276 * | |
| 6277 * // using the `_.matches` callback shorthand | |
| 6278 * _.pluck(_.dropWhile(users, { 'user': 'barney', 'active': false }), 'user'); | |
| 6279 * // => ['fred', 'pebbles'] | |
| 6280 * | |
| 6281 * // using the `_.matchesProperty` callback shorthand | |
| 6282 * _.pluck(_.dropWhile(users, 'active', false), 'user'); | |
| 6283 * // => ['pebbles'] | |
| 6284 * | |
| 6285 * // using the `_.property` callback shorthand | |
| 6286 * _.pluck(_.dropWhile(users, 'active'), 'user'); | |
| 6287 * // => ['barney', 'fred', 'pebbles'] | |
| 6288 */ | |
| 6289 function dropWhile(array, predicate, thisArg) { | |
| 6290 return (array && array.length) | |
| 6291 ? baseWhile(array, getCallback(predicate, thisArg, 3), true) | |
| 6292 : []; | |
| 6293 } | |
| 6294 | |
| 6295 /** | |
| 6296 * Fills elements of `array` with `value` from `start` up to, but not | |
| 6297 * including, `end`. | |
| 6298 * | |
| 6299 * **Note:** This method mutates `array`. | |
| 6300 * | |
| 6301 * @static | |
| 6302 * @memberOf _ | |
| 6303 * @category Array | |
| 6304 * @param {Array} array The array to fill. | |
| 6305 * @param {*} value The value to fill `array` with. | |
| 6306 * @param {number} [start=0] The start position. | |
| 6307 * @param {number} [end=array.length] The end position. | |
| 6308 * @returns {Array} Returns `array`. | |
| 6309 * @example | |
| 6310 * | |
| 6311 * var array = [1, 2, 3]; | |
| 6312 * | |
| 6313 * _.fill(array, 'a'); | |
| 6314 * console.log(array); | |
| 6315 * // => ['a', 'a', 'a'] | |
| 6316 * | |
| 6317 * _.fill(Array(3), 2); | |
| 6318 * // => [2, 2, 2] | |
| 6319 * | |
| 6320 * _.fill([4, 6, 8], '*', 1, 2); | |
| 6321 * // => [4, '*', 8] | |
| 6322 */ | |
| 6323 function fill(array, value, start, end) { | |
| 6324 var length = array ? array.length : 0; | |
| 6325 if (!length) { | |
| 6326 return []; | |
| 6327 } | |
| 6328 if (start && typeof start != 'number' && isIterateeCall(array, value, start)) { | |
| 6329 start = 0; | |
| 6330 end = length; | |
| 6331 } | |
| 6332 return baseFill(array, value, start, end); | |
| 6333 } | |
| 6334 | |
| 6335 /** | |
| 6336 * This method is like `_.find` except that it returns the index of the first | |
| 6337 * element `predicate` returns truthy for instead of the element itself. | |
| 6338 * | |
| 6339 * If a property name is provided for `predicate` the created `_.property` | |
| 6340 * style callback returns the property value of the given element. | |
| 6341 * | |
| 6342 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 6343 * style callback returns `true` for elements that have a matching property | |
| 6344 * value, else `false`. | |
| 6345 * | |
| 6346 * If an object is provided for `predicate` the created `_.matches` style | |
| 6347 * callback returns `true` for elements that have the properties of the given | |
| 6348 * object, else `false`. | |
| 6349 * | |
| 6350 * @static | |
| 6351 * @memberOf _ | |
| 6352 * @category Array | |
| 6353 * @param {Array} array The array to search. | |
| 6354 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 6355 * per iteration. | |
| 6356 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 6357 * @returns {number} Returns the index of the found element, else `-1`. | |
| 6358 * @example | |
| 6359 * | |
| 6360 * var users = [ | |
| 6361 * { 'user': 'barney', 'active': false }, | |
| 6362 * { 'user': 'fred', 'active': false }, | |
| 6363 * { 'user': 'pebbles', 'active': true } | |
| 6364 * ]; | |
| 6365 * | |
| 6366 * _.findIndex(users, function(chr) { | |
| 6367 * return chr.user == 'barney'; | |
| 6368 * }); | |
| 6369 * // => 0 | |
| 6370 * | |
| 6371 * // using the `_.matches` callback shorthand | |
| 6372 * _.findIndex(users, { 'user': 'fred', 'active': false }); | |
| 6373 * // => 1 | |
| 6374 * | |
| 6375 * // using the `_.matchesProperty` callback shorthand | |
| 6376 * _.findIndex(users, 'active', false); | |
| 6377 * // => 0 | |
| 6378 * | |
| 6379 * // using the `_.property` callback shorthand | |
| 6380 * _.findIndex(users, 'active'); | |
| 6381 * // => 2 | |
| 6382 */ | |
| 6383 var findIndex = createFindIndex(); | |
| 6384 | |
| 6385 /** | |
| 6386 * This method is like `_.findIndex` except that it iterates over elements | |
| 6387 * of `collection` from right to left. | |
| 6388 * | |
| 6389 * If a property name is provided for `predicate` the created `_.property` | |
| 6390 * style callback returns the property value of the given element. | |
| 6391 * | |
| 6392 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 6393 * style callback returns `true` for elements that have a matching property | |
| 6394 * value, else `false`. | |
| 6395 * | |
| 6396 * If an object is provided for `predicate` the created `_.matches` style | |
| 6397 * callback returns `true` for elements that have the properties of the given | |
| 6398 * object, else `false`. | |
| 6399 * | |
| 6400 * @static | |
| 6401 * @memberOf _ | |
| 6402 * @category Array | |
| 6403 * @param {Array} array The array to search. | |
| 6404 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 6405 * per iteration. | |
| 6406 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 6407 * @returns {number} Returns the index of the found element, else `-1`. | |
| 6408 * @example | |
| 6409 * | |
| 6410 * var users = [ | |
| 6411 * { 'user': 'barney', 'active': true }, | |
| 6412 * { 'user': 'fred', 'active': false }, | |
| 6413 * { 'user': 'pebbles', 'active': false } | |
| 6414 * ]; | |
| 6415 * | |
| 6416 * _.findLastIndex(users, function(chr) { | |
| 6417 * return chr.user == 'pebbles'; | |
| 6418 * }); | |
| 6419 * // => 2 | |
| 6420 * | |
| 6421 * // using the `_.matches` callback shorthand | |
| 6422 * _.findLastIndex(users, { 'user': 'barney', 'active': true }); | |
| 6423 * // => 0 | |
| 6424 * | |
| 6425 * // using the `_.matchesProperty` callback shorthand | |
| 6426 * _.findLastIndex(users, 'active', false); | |
| 6427 * // => 2 | |
| 6428 * | |
| 6429 * // using the `_.property` callback shorthand | |
| 6430 * _.findLastIndex(users, 'active'); | |
| 6431 * // => 0 | |
| 6432 */ | |
| 6433 var findLastIndex = createFindIndex(true); | |
| 6434 | |
| 6435 /** | |
| 6436 * Gets the first element of `array`. | |
| 6437 * | |
| 6438 * @static | |
| 6439 * @memberOf _ | |
| 6440 * @alias head | |
| 6441 * @category Array | |
| 6442 * @param {Array} array The array to query. | |
| 6443 * @returns {*} Returns the first element of `array`. | |
| 6444 * @example | |
| 6445 * | |
| 6446 * _.first([1, 2, 3]); | |
| 6447 * // => 1 | |
| 6448 * | |
| 6449 * _.first([]); | |
| 6450 * // => undefined | |
| 6451 */ | |
| 6452 function first(array) { | |
| 6453 return array ? array[0] : undefined; | |
| 6454 } | |
| 6455 | |
| 6456 /** | |
| 6457 * Flattens a nested array. If `isDeep` is `true` the array is recursively | |
| 6458 * flattened, otherwise it is only flattened a single level. | |
| 6459 * | |
| 6460 * @static | |
| 6461 * @memberOf _ | |
| 6462 * @category Array | |
| 6463 * @param {Array} array The array to flatten. | |
| 6464 * @param {boolean} [isDeep] Specify a deep flatten. | |
| 6465 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 6466 * @returns {Array} Returns the new flattened array. | |
| 6467 * @example | |
| 6468 * | |
| 6469 * _.flatten([1, [2, 3, [4]]]); | |
| 6470 * // => [1, 2, 3, [4]] | |
| 6471 * | |
| 6472 * // using `isDeep` | |
| 6473 * _.flatten([1, [2, 3, [4]]], true); | |
| 6474 * // => [1, 2, 3, 4] | |
| 6475 */ | |
| 6476 function flatten(array, isDeep, guard) { | |
| 6477 var length = array ? array.length : 0; | |
| 6478 if (guard && isIterateeCall(array, isDeep, guard)) { | |
| 6479 isDeep = false; | |
| 6480 } | |
| 6481 return length ? baseFlatten(array, isDeep) : []; | |
| 6482 } | |
| 6483 | |
| 6484 /** | |
| 6485 * Recursively flattens a nested array. | |
| 6486 * | |
| 6487 * @static | |
| 6488 * @memberOf _ | |
| 6489 * @category Array | |
| 6490 * @param {Array} array The array to recursively flatten. | |
| 6491 * @returns {Array} Returns the new flattened array. | |
| 6492 * @example | |
| 6493 * | |
| 6494 * _.flattenDeep([1, [2, 3, [4]]]); | |
| 6495 * // => [1, 2, 3, 4] | |
| 6496 */ | |
| 6497 function flattenDeep(array) { | |
| 6498 var length = array ? array.length : 0; | |
| 6499 return length ? baseFlatten(array, true) : []; | |
| 6500 } | |
| 6501 | |
| 6502 /** | |
| 6503 * Gets the index at which the first occurrence of `value` is found in `array` | |
| 6504 * using `SameValueZero` for equality comparisons. If `fromIndex` is negative, | |
| 6505 * it is used as the offset from the end of `array`. If `array` is sorted | |
| 6506 * providing `true` for `fromIndex` performs a faster binary search. | |
| 6507 * | |
| 6508 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 6509 * comparisons are like strict equality comparisons, e.g. `===`, except that | |
| 6510 * `NaN` matches `NaN`. | |
| 6511 * | |
| 6512 * @static | |
| 6513 * @memberOf _ | |
| 6514 * @category Array | |
| 6515 * @param {Array} array The array to search. | |
| 6516 * @param {*} value The value to search for. | |
| 6517 * @param {boolean|number} [fromIndex=0] The index to search from or `true` | |
| 6518 * to perform a binary search on a sorted array. | |
| 6519 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 6520 * @example | |
| 6521 * | |
| 6522 * _.indexOf([1, 2, 1, 2], 2); | |
| 6523 * // => 1 | |
| 6524 * | |
| 6525 * // using `fromIndex` | |
| 6526 * _.indexOf([1, 2, 1, 2], 2, 2); | |
| 6527 * // => 3 | |
| 6528 * | |
| 6529 * // performing a binary search | |
| 6530 * _.indexOf([1, 1, 2, 2], 2, true); | |
| 6531 * // => 2 | |
| 6532 */ | |
| 6533 function indexOf(array, value, fromIndex) { | |
| 6534 var length = array ? array.length : 0; | |
| 6535 if (!length) { | |
| 6536 return -1; | |
| 6537 } | |
| 6538 if (typeof fromIndex == 'number') { | |
| 6539 fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : fromIndex; | |
| 6540 } else if (fromIndex) { | |
| 6541 var index = binaryIndex(array, value), | |
| 6542 other = array[index]; | |
| 6543 | |
| 6544 if (value === value ? (value === other) : (other !== other)) { | |
| 6545 return index; | |
| 6546 } | |
| 6547 return -1; | |
| 6548 } | |
| 6549 return baseIndexOf(array, value, fromIndex || 0); | |
| 6550 } | |
| 6551 | |
| 6552 /** | |
| 6553 * Gets all but the last element of `array`. | |
| 6554 * | |
| 6555 * @static | |
| 6556 * @memberOf _ | |
| 6557 * @category Array | |
| 6558 * @param {Array} array The array to query. | |
| 6559 * @returns {Array} Returns the slice of `array`. | |
| 6560 * @example | |
| 6561 * | |
| 6562 * _.initial([1, 2, 3]); | |
| 6563 * // => [1, 2] | |
| 6564 */ | |
| 6565 function initial(array) { | |
| 6566 return dropRight(array, 1); | |
| 6567 } | |
| 6568 | |
| 6569 /** | |
| 6570 * Creates an array of unique values in all provided arrays using `SameValueZero` | |
| 6571 * for equality comparisons. | |
| 6572 * | |
| 6573 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 6574 * comparisons are like strict equality comparisons, e.g. `===`, except that | |
| 6575 * `NaN` matches `NaN`. | |
| 6576 * | |
| 6577 * @static | |
| 6578 * @memberOf _ | |
| 6579 * @category Array | |
| 6580 * @param {...Array} [arrays] The arrays to inspect. | |
| 6581 * @returns {Array} Returns the new array of shared values. | |
| 6582 * @example | |
| 6583 * _.intersection([1, 2], [4, 2], [2, 1]); | |
| 6584 * // => [2] | |
| 6585 */ | |
| 6586 function intersection() { | |
| 6587 var args = [], | |
| 6588 argsIndex = -1, | |
| 6589 argsLength = arguments.length, | |
| 6590 caches = [], | |
| 6591 indexOf = getIndexOf(), | |
| 6592 isCommon = indexOf == baseIndexOf, | |
| 6593 result = []; | |
| 6594 | |
| 6595 while (++argsIndex < argsLength) { | |
| 6596 var value = arguments[argsIndex]; | |
| 6597 if (isArray(value) || isArguments(value)) { | |
| 6598 args.push(value); | |
| 6599 caches.push((isCommon && value.length >= 120) ? createCache(argsIndex && value) : null); | |
| 6600 } | |
| 6601 } | |
| 6602 argsLength = args.length; | |
| 6603 if (argsLength < 2) { | |
| 6604 return result; | |
| 6605 } | |
| 6606 var array = args[0], | |
| 6607 index = -1, | |
| 6608 length = array ? array.length : 0, | |
| 6609 seen = caches[0]; | |
| 6610 | |
| 6611 outer: | |
| 6612 while (++index < length) { | |
| 6613 value = array[index]; | |
| 6614 if ((seen ? cacheIndexOf(seen, value) : indexOf(result, value, 0)) < 0) { | |
| 6615 argsIndex = argsLength; | |
| 6616 while (--argsIndex) { | |
| 6617 var cache = caches[argsIndex]; | |
| 6618 if ((cache ? cacheIndexOf(cache, value) : indexOf(args[argsIndex], value, 0)) < 0) { | |
| 6619 continue outer; | |
| 6620 } | |
| 6621 } | |
| 6622 if (seen) { | |
| 6623 seen.push(value); | |
| 6624 } | |
| 6625 result.push(value); | |
| 6626 } | |
| 6627 } | |
| 6628 return result; | |
| 6629 } | |
| 6630 | |
| 6631 /** | |
| 6632 * Gets the last element of `array`. | |
| 6633 * | |
| 6634 * @static | |
| 6635 * @memberOf _ | |
| 6636 * @category Array | |
| 6637 * @param {Array} array The array to query. | |
| 6638 * @returns {*} Returns the last element of `array`. | |
| 6639 * @example | |
| 6640 * | |
| 6641 * _.last([1, 2, 3]); | |
| 6642 * // => 3 | |
| 6643 */ | |
| 6644 function last(array) { | |
| 6645 var length = array ? array.length : 0; | |
| 6646 return length ? array[length - 1] : undefined; | |
| 6647 } | |
| 6648 | |
| 6649 /** | |
| 6650 * This method is like `_.indexOf` except that it iterates over elements of | |
| 6651 * `array` from right to left. | |
| 6652 * | |
| 6653 * @static | |
| 6654 * @memberOf _ | |
| 6655 * @category Array | |
| 6656 * @param {Array} array The array to search. | |
| 6657 * @param {*} value The value to search for. | |
| 6658 * @param {boolean|number} [fromIndex=array.length-1] The index to search from | |
| 6659 * or `true` to perform a binary search on a sorted array. | |
| 6660 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 6661 * @example | |
| 6662 * | |
| 6663 * _.lastIndexOf([1, 2, 1, 2], 2); | |
| 6664 * // => 3 | |
| 6665 * | |
| 6666 * // using `fromIndex` | |
| 6667 * _.lastIndexOf([1, 2, 1, 2], 2, 2); | |
| 6668 * // => 1 | |
| 6669 * | |
| 6670 * // performing a binary search | |
| 6671 * _.lastIndexOf([1, 1, 2, 2], 2, true); | |
| 6672 * // => 3 | |
| 6673 */ | |
| 6674 function lastIndexOf(array, value, fromIndex) { | |
| 6675 var length = array ? array.length : 0; | |
| 6676 if (!length) { | |
| 6677 return -1; | |
| 6678 } | |
| 6679 var index = length; | |
| 6680 if (typeof fromIndex == 'number') { | |
| 6681 index = (fromIndex < 0 ? nativeMax(length + fromIndex, 0) : nativeMin(fromIndex || 0, length - 1)) + 1; | |
| 6682 } else if (fromIndex) { | |
| 6683 index = binaryIndex(array, value, true) - 1; | |
| 6684 var other = array[index]; | |
| 6685 if (value === value ? (value === other) : (other !== other)) { | |
| 6686 return index; | |
| 6687 } | |
| 6688 return -1; | |
| 6689 } | |
| 6690 if (value !== value) { | |
| 6691 return indexOfNaN(array, index, true); | |
| 6692 } | |
| 6693 while (index--) { | |
| 6694 if (array[index] === value) { | |
| 6695 return index; | |
| 6696 } | |
| 6697 } | |
| 6698 return -1; | |
| 6699 } | |
| 6700 | |
| 6701 /** | |
| 6702 * Removes all provided values from `array` using `SameValueZero` for equality | |
| 6703 * comparisons. | |
| 6704 * | |
| 6705 * **Notes:** | |
| 6706 * - Unlike `_.without`, this method mutates `array` | |
| 6707 * - [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 6708 * comparisons are like strict equality comparisons, e.g. `===`, except | |
| 6709 * that `NaN` matches `NaN` | |
| 6710 * | |
| 6711 * @static | |
| 6712 * @memberOf _ | |
| 6713 * @category Array | |
| 6714 * @param {Array} array The array to modify. | |
| 6715 * @param {...*} [values] The values to remove. | |
| 6716 * @returns {Array} Returns `array`. | |
| 6717 * @example | |
| 6718 * | |
| 6719 * var array = [1, 2, 3, 1, 2, 3]; | |
| 6720 * | |
| 6721 * _.pull(array, 2, 3); | |
| 6722 * console.log(array); | |
| 6723 * // => [1, 1] | |
| 6724 */ | |
| 6725 function pull() { | |
| 6726 var args = arguments, | |
| 6727 array = args[0]; | |
| 6728 | |
| 6729 if (!(array && array.length)) { | |
| 6730 return array; | |
| 6731 } | |
| 6732 var index = 0, | |
| 6733 indexOf = getIndexOf(), | |
| 6734 length = args.length; | |
| 6735 | |
| 6736 while (++index < length) { | |
| 6737 var fromIndex = 0, | |
| 6738 value = args[index]; | |
| 6739 | |
| 6740 while ((fromIndex = indexOf(array, value, fromIndex)) > -1) { | |
| 6741 splice.call(array, fromIndex, 1); | |
| 6742 } | |
| 6743 } | |
| 6744 return array; | |
| 6745 } | |
| 6746 | |
| 6747 /** | |
| 6748 * Removes elements from `array` corresponding to the given indexes and returns | |
| 6749 * an array of the removed elements. Indexes may be specified as an array of | |
| 6750 * indexes or as individual arguments. | |
| 6751 * | |
| 6752 * **Note:** Unlike `_.at`, this method mutates `array`. | |
| 6753 * | |
| 6754 * @static | |
| 6755 * @memberOf _ | |
| 6756 * @category Array | |
| 6757 * @param {Array} array The array to modify. | |
| 6758 * @param {...(number|number[])} [indexes] The indexes of elements to remove, | |
| 6759 * specified as individual indexes or arrays of indexes. | |
| 6760 * @returns {Array} Returns the new array of removed elements. | |
| 6761 * @example | |
| 6762 * | |
| 6763 * var array = [5, 10, 15, 20]; | |
| 6764 * var evens = _.pullAt(array, 1, 3); | |
| 6765 * | |
| 6766 * console.log(array); | |
| 6767 * // => [5, 15] | |
| 6768 * | |
| 6769 * console.log(evens); | |
| 6770 * // => [10, 20] | |
| 6771 */ | |
| 6772 var pullAt = restParam(function(array, indexes) { | |
| 6773 array || (array = []); | |
| 6774 indexes = baseFlatten(indexes); | |
| 6775 | |
| 6776 var result = baseAt(array, indexes); | |
| 6777 basePullAt(array, indexes.sort(baseCompareAscending)); | |
| 6778 return result; | |
| 6779 }); | |
| 6780 | |
| 6781 /** | |
| 6782 * Removes all elements from `array` that `predicate` returns truthy for | |
| 6783 * and returns an array of the removed elements. The predicate is bound to | |
| 6784 * `thisArg` and invoked with three arguments: (value, index, array). | |
| 6785 * | |
| 6786 * If a property name is provided for `predicate` the created `_.property` | |
| 6787 * style callback returns the property value of the given element. | |
| 6788 * | |
| 6789 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 6790 * style callback returns `true` for elements that have a matching property | |
| 6791 * value, else `false`. | |
| 6792 * | |
| 6793 * If an object is provided for `predicate` the created `_.matches` style | |
| 6794 * callback returns `true` for elements that have the properties of the given | |
| 6795 * object, else `false`. | |
| 6796 * | |
| 6797 * **Note:** Unlike `_.filter`, this method mutates `array`. | |
| 6798 * | |
| 6799 * @static | |
| 6800 * @memberOf _ | |
| 6801 * @category Array | |
| 6802 * @param {Array} array The array to modify. | |
| 6803 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 6804 * per iteration. | |
| 6805 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 6806 * @returns {Array} Returns the new array of removed elements. | |
| 6807 * @example | |
| 6808 * | |
| 6809 * var array = [1, 2, 3, 4]; | |
| 6810 * var evens = _.remove(array, function(n) { | |
| 6811 * return n % 2 == 0; | |
| 6812 * }); | |
| 6813 * | |
| 6814 * console.log(array); | |
| 6815 * // => [1, 3] | |
| 6816 * | |
| 6817 * console.log(evens); | |
| 6818 * // => [2, 4] | |
| 6819 */ | |
| 6820 function remove(array, predicate, thisArg) { | |
| 6821 var result = []; | |
| 6822 if (!(array && array.length)) { | |
| 6823 return result; | |
| 6824 } | |
| 6825 var index = -1, | |
| 6826 indexes = [], | |
| 6827 length = array.length; | |
| 6828 | |
| 6829 predicate = getCallback(predicate, thisArg, 3); | |
| 6830 while (++index < length) { | |
| 6831 var value = array[index]; | |
| 6832 if (predicate(value, index, array)) { | |
| 6833 result.push(value); | |
| 6834 indexes.push(index); | |
| 6835 } | |
| 6836 } | |
| 6837 basePullAt(array, indexes); | |
| 6838 return result; | |
| 6839 } | |
| 6840 | |
| 6841 /** | |
| 6842 * Gets all but the first element of `array`. | |
| 6843 * | |
| 6844 * @static | |
| 6845 * @memberOf _ | |
| 6846 * @alias tail | |
| 6847 * @category Array | |
| 6848 * @param {Array} array The array to query. | |
| 6849 * @returns {Array} Returns the slice of `array`. | |
| 6850 * @example | |
| 6851 * | |
| 6852 * _.rest([1, 2, 3]); | |
| 6853 * // => [2, 3] | |
| 6854 */ | |
| 6855 function rest(array) { | |
| 6856 return drop(array, 1); | |
| 6857 } | |
| 6858 | |
| 6859 /** | |
| 6860 * Creates a slice of `array` from `start` up to, but not including, `end`. | |
| 6861 * | |
| 6862 * **Note:** This method is used instead of `Array#slice` to support node | |
| 6863 * lists in IE < 9 and to ensure dense arrays are returned. | |
| 6864 * | |
| 6865 * @static | |
| 6866 * @memberOf _ | |
| 6867 * @category Array | |
| 6868 * @param {Array} array The array to slice. | |
| 6869 * @param {number} [start=0] The start position. | |
| 6870 * @param {number} [end=array.length] The end position. | |
| 6871 * @returns {Array} Returns the slice of `array`. | |
| 6872 */ | |
| 6873 function slice(array, start, end) { | |
| 6874 var length = array ? array.length : 0; | |
| 6875 if (!length) { | |
| 6876 return []; | |
| 6877 } | |
| 6878 if (end && typeof end != 'number' && isIterateeCall(array, start, end)) { | |
| 6879 start = 0; | |
| 6880 end = length; | |
| 6881 } | |
| 6882 return baseSlice(array, start, end); | |
| 6883 } | |
| 6884 | |
| 6885 /** | |
| 6886 * Uses a binary search to determine the lowest index at which `value` should | |
| 6887 * be inserted into `array` in order to maintain its sort order. If an iteratee | |
| 6888 * function is provided it is invoked for `value` and each element of `array` | |
| 6889 * to compute their sort ranking. The iteratee is bound to `thisArg` and | |
| 6890 * invoked with one argument; (value). | |
| 6891 * | |
| 6892 * If a property name is provided for `iteratee` the created `_.property` | |
| 6893 * style callback returns the property value of the given element. | |
| 6894 * | |
| 6895 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 6896 * style callback returns `true` for elements that have a matching property | |
| 6897 * value, else `false`. | |
| 6898 * | |
| 6899 * If an object is provided for `iteratee` the created `_.matches` style | |
| 6900 * callback returns `true` for elements that have the properties of the given | |
| 6901 * object, else `false`. | |
| 6902 * | |
| 6903 * @static | |
| 6904 * @memberOf _ | |
| 6905 * @category Array | |
| 6906 * @param {Array} array The sorted array to inspect. | |
| 6907 * @param {*} value The value to evaluate. | |
| 6908 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 6909 * per iteration. | |
| 6910 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 6911 * @returns {number} Returns the index at which `value` should be inserted | |
| 6912 * into `array`. | |
| 6913 * @example | |
| 6914 * | |
| 6915 * _.sortedIndex([30, 50], 40); | |
| 6916 * // => 1 | |
| 6917 * | |
| 6918 * _.sortedIndex([4, 4, 5, 5], 5); | |
| 6919 * // => 2 | |
| 6920 * | |
| 6921 * var dict = { 'data': { 'thirty': 30, 'forty': 40, 'fifty': 50 } }; | |
| 6922 * | |
| 6923 * // using an iteratee function | |
| 6924 * _.sortedIndex(['thirty', 'fifty'], 'forty', function(word) { | |
| 6925 * return this.data[word]; | |
| 6926 * }, dict); | |
| 6927 * // => 1 | |
| 6928 * | |
| 6929 * // using the `_.property` callback shorthand | |
| 6930 * _.sortedIndex([{ 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x'); | |
| 6931 * // => 1 | |
| 6932 */ | |
| 6933 var sortedIndex = createSortedIndex(); | |
| 6934 | |
| 6935 /** | |
| 6936 * This method is like `_.sortedIndex` except that it returns the highest | |
| 6937 * index at which `value` should be inserted into `array` in order to | |
| 6938 * maintain its sort order. | |
| 6939 * | |
| 6940 * @static | |
| 6941 * @memberOf _ | |
| 6942 * @category Array | |
| 6943 * @param {Array} array The sorted array to inspect. | |
| 6944 * @param {*} value The value to evaluate. | |
| 6945 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 6946 * per iteration. | |
| 6947 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 6948 * @returns {number} Returns the index at which `value` should be inserted | |
| 6949 * into `array`. | |
| 6950 * @example | |
| 6951 * | |
| 6952 * _.sortedLastIndex([4, 4, 5, 5], 5); | |
| 6953 * // => 4 | |
| 6954 */ | |
| 6955 var sortedLastIndex = createSortedIndex(true); | |
| 6956 | |
| 6957 /** | |
| 6958 * Creates a slice of `array` with `n` elements taken from the beginning. | |
| 6959 * | |
| 6960 * @static | |
| 6961 * @memberOf _ | |
| 6962 * @category Array | |
| 6963 * @param {Array} array The array to query. | |
| 6964 * @param {number} [n=1] The number of elements to take. | |
| 6965 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 6966 * @returns {Array} Returns the slice of `array`. | |
| 6967 * @example | |
| 6968 * | |
| 6969 * _.take([1, 2, 3]); | |
| 6970 * // => [1] | |
| 6971 * | |
| 6972 * _.take([1, 2, 3], 2); | |
| 6973 * // => [1, 2] | |
| 6974 * | |
| 6975 * _.take([1, 2, 3], 5); | |
| 6976 * // => [1, 2, 3] | |
| 6977 * | |
| 6978 * _.take([1, 2, 3], 0); | |
| 6979 * // => [] | |
| 6980 */ | |
| 6981 function take(array, n, guard) { | |
| 6982 var length = array ? array.length : 0; | |
| 6983 if (!length) { | |
| 6984 return []; | |
| 6985 } | |
| 6986 if (guard ? isIterateeCall(array, n, guard) : n == null) { | |
| 6987 n = 1; | |
| 6988 } | |
| 6989 return baseSlice(array, 0, n < 0 ? 0 : n); | |
| 6990 } | |
| 6991 | |
| 6992 /** | |
| 6993 * Creates a slice of `array` with `n` elements taken from the end. | |
| 6994 * | |
| 6995 * @static | |
| 6996 * @memberOf _ | |
| 6997 * @category Array | |
| 6998 * @param {Array} array The array to query. | |
| 6999 * @param {number} [n=1] The number of elements to take. | |
| 7000 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 7001 * @returns {Array} Returns the slice of `array`. | |
| 7002 * @example | |
| 7003 * | |
| 7004 * _.takeRight([1, 2, 3]); | |
| 7005 * // => [3] | |
| 7006 * | |
| 7007 * _.takeRight([1, 2, 3], 2); | |
| 7008 * // => [2, 3] | |
| 7009 * | |
| 7010 * _.takeRight([1, 2, 3], 5); | |
| 7011 * // => [1, 2, 3] | |
| 7012 * | |
| 7013 * _.takeRight([1, 2, 3], 0); | |
| 7014 * // => [] | |
| 7015 */ | |
| 7016 function takeRight(array, n, guard) { | |
| 7017 var length = array ? array.length : 0; | |
| 7018 if (!length) { | |
| 7019 return []; | |
| 7020 } | |
| 7021 if (guard ? isIterateeCall(array, n, guard) : n == null) { | |
| 7022 n = 1; | |
| 7023 } | |
| 7024 n = length - (+n || 0); | |
| 7025 return baseSlice(array, n < 0 ? 0 : n); | |
| 7026 } | |
| 7027 | |
| 7028 /** | |
| 7029 * Creates a slice of `array` with elements taken from the end. Elements are | |
| 7030 * taken until `predicate` returns falsey. The predicate is bound to `thisArg` | |
| 7031 * and invoked with three arguments: (value, index, array). | |
| 7032 * | |
| 7033 * If a property name is provided for `predicate` the created `_.property` | |
| 7034 * style callback returns the property value of the given element. | |
| 7035 * | |
| 7036 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7037 * style callback returns `true` for elements that have a matching property | |
| 7038 * value, else `false`. | |
| 7039 * | |
| 7040 * If an object is provided for `predicate` the created `_.matches` style | |
| 7041 * callback returns `true` for elements that have the properties of the given | |
| 7042 * object, else `false`. | |
| 7043 * | |
| 7044 * @static | |
| 7045 * @memberOf _ | |
| 7046 * @category Array | |
| 7047 * @param {Array} array The array to query. | |
| 7048 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 7049 * per iteration. | |
| 7050 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 7051 * @returns {Array} Returns the slice of `array`. | |
| 7052 * @example | |
| 7053 * | |
| 7054 * _.takeRightWhile([1, 2, 3], function(n) { | |
| 7055 * return n > 1; | |
| 7056 * }); | |
| 7057 * // => [2, 3] | |
| 7058 * | |
| 7059 * var users = [ | |
| 7060 * { 'user': 'barney', 'active': true }, | |
| 7061 * { 'user': 'fred', 'active': false }, | |
| 7062 * { 'user': 'pebbles', 'active': false } | |
| 7063 * ]; | |
| 7064 * | |
| 7065 * // using the `_.matches` callback shorthand | |
| 7066 * _.pluck(_.takeRightWhile(users, { 'user': 'pebbles', 'active': false }), 'user'); | |
| 7067 * // => ['pebbles'] | |
| 7068 * | |
| 7069 * // using the `_.matchesProperty` callback shorthand | |
| 7070 * _.pluck(_.takeRightWhile(users, 'active', false), 'user'); | |
| 7071 * // => ['fred', 'pebbles'] | |
| 7072 * | |
| 7073 * // using the `_.property` callback shorthand | |
| 7074 * _.pluck(_.takeRightWhile(users, 'active'), 'user'); | |
| 7075 * // => [] | |
| 7076 */ | |
| 7077 function takeRightWhile(array, predicate, thisArg) { | |
| 7078 return (array && array.length) | |
| 7079 ? baseWhile(array, getCallback(predicate, thisArg, 3), false, true) | |
| 7080 : []; | |
| 7081 } | |
| 7082 | |
| 7083 /** | |
| 7084 * Creates a slice of `array` with elements taken from the beginning. Elements | |
| 7085 * are taken until `predicate` returns falsey. The predicate is bound to | |
| 7086 * `thisArg` and invoked with three arguments: (value, index, array). | |
| 7087 * | |
| 7088 * If a property name is provided for `predicate` the created `_.property` | |
| 7089 * style callback returns the property value of the given element. | |
| 7090 * | |
| 7091 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7092 * style callback returns `true` for elements that have a matching property | |
| 7093 * value, else `false`. | |
| 7094 * | |
| 7095 * If an object is provided for `predicate` the created `_.matches` style | |
| 7096 * callback returns `true` for elements that have the properties of the given | |
| 7097 * object, else `false`. | |
| 7098 * | |
| 7099 * @static | |
| 7100 * @memberOf _ | |
| 7101 * @category Array | |
| 7102 * @param {Array} array The array to query. | |
| 7103 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 7104 * per iteration. | |
| 7105 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 7106 * @returns {Array} Returns the slice of `array`. | |
| 7107 * @example | |
| 7108 * | |
| 7109 * _.takeWhile([1, 2, 3], function(n) { | |
| 7110 * return n < 3; | |
| 7111 * }); | |
| 7112 * // => [1, 2] | |
| 7113 * | |
| 7114 * var users = [ | |
| 7115 * { 'user': 'barney', 'active': false }, | |
| 7116 * { 'user': 'fred', 'active': false}, | |
| 7117 * { 'user': 'pebbles', 'active': true } | |
| 7118 * ]; | |
| 7119 * | |
| 7120 * // using the `_.matches` callback shorthand | |
| 7121 * _.pluck(_.takeWhile(users, { 'user': 'barney', 'active': false }), 'user'); | |
| 7122 * // => ['barney'] | |
| 7123 * | |
| 7124 * // using the `_.matchesProperty` callback shorthand | |
| 7125 * _.pluck(_.takeWhile(users, 'active', false), 'user'); | |
| 7126 * // => ['barney', 'fred'] | |
| 7127 * | |
| 7128 * // using the `_.property` callback shorthand | |
| 7129 * _.pluck(_.takeWhile(users, 'active'), 'user'); | |
| 7130 * // => [] | |
| 7131 */ | |
| 7132 function takeWhile(array, predicate, thisArg) { | |
| 7133 return (array && array.length) | |
| 7134 ? baseWhile(array, getCallback(predicate, thisArg, 3)) | |
| 7135 : []; | |
| 7136 } | |
| 7137 | |
| 7138 /** | |
| 7139 * Creates an array of unique values, in order, of the provided arrays using | |
| 7140 * `SameValueZero` for equality comparisons. | |
| 7141 * | |
| 7142 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 7143 * comparisons are like strict equality comparisons, e.g. `===`, except that | |
| 7144 * `NaN` matches `NaN`. | |
| 7145 * | |
| 7146 * @static | |
| 7147 * @memberOf _ | |
| 7148 * @category Array | |
| 7149 * @param {...Array} [arrays] The arrays to inspect. | |
| 7150 * @returns {Array} Returns the new array of combined values. | |
| 7151 * @example | |
| 7152 * | |
| 7153 * _.union([1, 2], [4, 2], [2, 1]); | |
| 7154 * // => [1, 2, 4] | |
| 7155 */ | |
| 7156 var union = restParam(function(arrays) { | |
| 7157 return baseUniq(baseFlatten(arrays, false, true)); | |
| 7158 }); | |
| 7159 | |
| 7160 /** | |
| 7161 * Creates a duplicate-free version of an array, using `SameValueZero` for | |
| 7162 * equality comparisons, in which only the first occurence of each element | |
| 7163 * is kept. Providing `true` for `isSorted` performs a faster search algorithm | |
| 7164 * for sorted arrays. If an iteratee function is provided it is invoked for | |
| 7165 * each element in the array to generate the criterion by which uniqueness | |
| 7166 * is computed. The `iteratee` is bound to `thisArg` and invoked with three | |
| 7167 * arguments: (value, index, array). | |
| 7168 * | |
| 7169 * If a property name is provided for `iteratee` the created `_.property` | |
| 7170 * style callback returns the property value of the given element. | |
| 7171 * | |
| 7172 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7173 * style callback returns `true` for elements that have a matching property | |
| 7174 * value, else `false`. | |
| 7175 * | |
| 7176 * If an object is provided for `iteratee` the created `_.matches` style | |
| 7177 * callback returns `true` for elements that have the properties of the given | |
| 7178 * object, else `false`. | |
| 7179 * | |
| 7180 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 7181 * comparisons are like strict equality comparisons, e.g. `===`, except that | |
| 7182 * `NaN` matches `NaN`. | |
| 7183 * | |
| 7184 * @static | |
| 7185 * @memberOf _ | |
| 7186 * @alias unique | |
| 7187 * @category Array | |
| 7188 * @param {Array} array The array to inspect. | |
| 7189 * @param {boolean} [isSorted] Specify the array is sorted. | |
| 7190 * @param {Function|Object|string} [iteratee] The function invoked per iteration. | |
| 7191 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 7192 * @returns {Array} Returns the new duplicate-value-free array. | |
| 7193 * @example | |
| 7194 * | |
| 7195 * _.uniq([2, 1, 2]); | |
| 7196 * // => [2, 1] | |
| 7197 * | |
| 7198 * // using `isSorted` | |
| 7199 * _.uniq([1, 1, 2], true); | |
| 7200 * // => [1, 2] | |
| 7201 * | |
| 7202 * // using an iteratee function | |
| 7203 * _.uniq([1, 2.5, 1.5, 2], function(n) { | |
| 7204 * return this.floor(n); | |
| 7205 * }, Math); | |
| 7206 * // => [1, 2.5] | |
| 7207 * | |
| 7208 * // using the `_.property` callback shorthand | |
| 7209 * _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); | |
| 7210 * // => [{ 'x': 1 }, { 'x': 2 }] | |
| 7211 */ | |
| 7212 function uniq(array, isSorted, iteratee, thisArg) { | |
| 7213 var length = array ? array.length : 0; | |
| 7214 if (!length) { | |
| 7215 return []; | |
| 7216 } | |
| 7217 if (isSorted != null && typeof isSorted != 'boolean') { | |
| 7218 thisArg = iteratee; | |
| 7219 iteratee = isIterateeCall(array, isSorted, thisArg) ? null : isSorted; | |
| 7220 isSorted = false; | |
| 7221 } | |
| 7222 var func = getCallback(); | |
| 7223 if (!(func === baseCallback && iteratee == null)) { | |
| 7224 iteratee = func(iteratee, thisArg, 3); | |
| 7225 } | |
| 7226 return (isSorted && getIndexOf() == baseIndexOf) | |
| 7227 ? sortedUniq(array, iteratee) | |
| 7228 : baseUniq(array, iteratee); | |
| 7229 } | |
| 7230 | |
| 7231 /** | |
| 7232 * This method is like `_.zip` except that it accepts an array of grouped | |
| 7233 * elements and creates an array regrouping the elements to their pre-`_.zip` | |
| 7234 * configuration. | |
| 7235 * | |
| 7236 * @static | |
| 7237 * @memberOf _ | |
| 7238 * @category Array | |
| 7239 * @param {Array} array The array of grouped elements to process. | |
| 7240 * @returns {Array} Returns the new array of regrouped elements. | |
| 7241 * @example | |
| 7242 * | |
| 7243 * var zipped = _.zip(['fred', 'barney'], [30, 40], [true, false]); | |
| 7244 * // => [['fred', 30, true], ['barney', 40, false]] | |
| 7245 * | |
| 7246 * _.unzip(zipped); | |
| 7247 * // => [['fred', 'barney'], [30, 40], [true, false]] | |
| 7248 */ | |
| 7249 function unzip(array) { | |
| 7250 var index = -1, | |
| 7251 length = (array && array.length && arrayMax(arrayMap(array, getLength))) >>> 0, | |
| 7252 result = Array(length); | |
| 7253 | |
| 7254 while (++index < length) { | |
| 7255 result[index] = arrayMap(array, baseProperty(index)); | |
| 7256 } | |
| 7257 return result; | |
| 7258 } | |
| 7259 | |
| 7260 /** | |
| 7261 * Creates an array excluding all provided values using `SameValueZero` for | |
| 7262 * equality comparisons. | |
| 7263 * | |
| 7264 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 7265 * comparisons are like strict equality comparisons, e.g. `===`, except that | |
| 7266 * `NaN` matches `NaN`. | |
| 7267 * | |
| 7268 * @static | |
| 7269 * @memberOf _ | |
| 7270 * @category Array | |
| 7271 * @param {Array} array The array to filter. | |
| 7272 * @param {...*} [values] The values to exclude. | |
| 7273 * @returns {Array} Returns the new array of filtered values. | |
| 7274 * @example | |
| 7275 * | |
| 7276 * _.without([1, 2, 1, 3], 1, 2); | |
| 7277 * // => [3] | |
| 7278 */ | |
| 7279 var without = restParam(function(array, values) { | |
| 7280 return (isArray(array) || isArguments(array)) | |
| 7281 ? baseDifference(array, values) | |
| 7282 : []; | |
| 7283 }); | |
| 7284 | |
| 7285 /** | |
| 7286 * Creates an array that is the [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference) | |
| 7287 * of the provided arrays. | |
| 7288 * | |
| 7289 * @static | |
| 7290 * @memberOf _ | |
| 7291 * @category Array | |
| 7292 * @param {...Array} [arrays] The arrays to inspect. | |
| 7293 * @returns {Array} Returns the new array of values. | |
| 7294 * @example | |
| 7295 * | |
| 7296 * _.xor([1, 2], [4, 2]); | |
| 7297 * // => [1, 4] | |
| 7298 */ | |
| 7299 function xor() { | |
| 7300 var index = -1, | |
| 7301 length = arguments.length; | |
| 7302 | |
| 7303 while (++index < length) { | |
| 7304 var array = arguments[index]; | |
| 7305 if (isArray(array) || isArguments(array)) { | |
| 7306 var result = result | |
| 7307 ? baseDifference(result, array).concat(baseDifference(array, result)) | |
| 7308 : array; | |
| 7309 } | |
| 7310 } | |
| 7311 return result ? baseUniq(result) : []; | |
| 7312 } | |
| 7313 | |
| 7314 /** | |
| 7315 * Creates an array of grouped elements, the first of which contains the first | |
| 7316 * elements of the given arrays, the second of which contains the second elements | |
| 7317 * of the given arrays, and so on. | |
| 7318 * | |
| 7319 * @static | |
| 7320 * @memberOf _ | |
| 7321 * @category Array | |
| 7322 * @param {...Array} [arrays] The arrays to process. | |
| 7323 * @returns {Array} Returns the new array of grouped elements. | |
| 7324 * @example | |
| 7325 * | |
| 7326 * _.zip(['fred', 'barney'], [30, 40], [true, false]); | |
| 7327 * // => [['fred', 30, true], ['barney', 40, false]] | |
| 7328 */ | |
| 7329 var zip = restParam(unzip); | |
| 7330 | |
| 7331 /** | |
| 7332 * The inverse of `_.pairs`; this method returns an object composed from arrays | |
| 7333 * of property names and values. Provide either a single two dimensional array, | |
| 7334 * e.g. `[[key1, value1], [key2, value2]]` or two arrays, one of property names | |
| 7335 * and one of corresponding values. | |
| 7336 * | |
| 7337 * @static | |
| 7338 * @memberOf _ | |
| 7339 * @alias object | |
| 7340 * @category Array | |
| 7341 * @param {Array} props The property names. | |
| 7342 * @param {Array} [values=[]] The property values. | |
| 7343 * @returns {Object} Returns the new object. | |
| 7344 * @example | |
| 7345 * | |
| 7346 * _.zipObject([['fred', 30], ['barney', 40]]); | |
| 7347 * // => { 'fred': 30, 'barney': 40 } | |
| 7348 * | |
| 7349 * _.zipObject(['fred', 'barney'], [30, 40]); | |
| 7350 * // => { 'fred': 30, 'barney': 40 } | |
| 7351 */ | |
| 7352 function zipObject(props, values) { | |
| 7353 var index = -1, | |
| 7354 length = props ? props.length : 0, | |
| 7355 result = {}; | |
| 7356 | |
| 7357 if (length && !values && !isArray(props[0])) { | |
| 7358 values = []; | |
| 7359 } | |
| 7360 while (++index < length) { | |
| 7361 var key = props[index]; | |
| 7362 if (values) { | |
| 7363 result[key] = values[index]; | |
| 7364 } else if (key) { | |
| 7365 result[key[0]] = key[1]; | |
| 7366 } | |
| 7367 } | |
| 7368 return result; | |
| 7369 } | |
| 7370 | |
| 7371 /*------------------------------------------------------------------------*/ | |
| 7372 | |
| 7373 /** | |
| 7374 * Creates a `lodash` object that wraps `value` with explicit method | |
| 7375 * chaining enabled. | |
| 7376 * | |
| 7377 * @static | |
| 7378 * @memberOf _ | |
| 7379 * @category Chain | |
| 7380 * @param {*} value The value to wrap. | |
| 7381 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 7382 * @example | |
| 7383 * | |
| 7384 * var users = [ | |
| 7385 * { 'user': 'barney', 'age': 36 }, | |
| 7386 * { 'user': 'fred', 'age': 40 }, | |
| 7387 * { 'user': 'pebbles', 'age': 1 } | |
| 7388 * ]; | |
| 7389 * | |
| 7390 * var youngest = _.chain(users) | |
| 7391 * .sortBy('age') | |
| 7392 * .map(function(chr) { | |
| 7393 * return chr.user + ' is ' + chr.age; | |
| 7394 * }) | |
| 7395 * .first() | |
| 7396 * .value(); | |
| 7397 * // => 'pebbles is 1' | |
| 7398 */ | |
| 7399 function chain(value) { | |
| 7400 var result = lodash(value); | |
| 7401 result.__chain__ = true; | |
| 7402 return result; | |
| 7403 } | |
| 7404 | |
| 7405 /** | |
| 7406 * This method invokes `interceptor` and returns `value`. The interceptor is | |
| 7407 * bound to `thisArg` and invoked with one argument; (value). The purpose of | |
| 7408 * this method is to "tap into" a method chain in order to perform operations | |
| 7409 * on intermediate results within the chain. | |
| 7410 * | |
| 7411 * @static | |
| 7412 * @memberOf _ | |
| 7413 * @category Chain | |
| 7414 * @param {*} value The value to provide to `interceptor`. | |
| 7415 * @param {Function} interceptor The function to invoke. | |
| 7416 * @param {*} [thisArg] The `this` binding of `interceptor`. | |
| 7417 * @returns {*} Returns `value`. | |
| 7418 * @example | |
| 7419 * | |
| 7420 * _([1, 2, 3]) | |
| 7421 * .tap(function(array) { | |
| 7422 * array.pop(); | |
| 7423 * }) | |
| 7424 * .reverse() | |
| 7425 * .value(); | |
| 7426 * // => [2, 1] | |
| 7427 */ | |
| 7428 function tap(value, interceptor, thisArg) { | |
| 7429 interceptor.call(thisArg, value); | |
| 7430 return value; | |
| 7431 } | |
| 7432 | |
| 7433 /** | |
| 7434 * This method is like `_.tap` except that it returns the result of `interceptor`. | |
| 7435 * | |
| 7436 * @static | |
| 7437 * @memberOf _ | |
| 7438 * @category Chain | |
| 7439 * @param {*} value The value to provide to `interceptor`. | |
| 7440 * @param {Function} interceptor The function to invoke. | |
| 7441 * @param {*} [thisArg] The `this` binding of `interceptor`. | |
| 7442 * @returns {*} Returns the result of `interceptor`. | |
| 7443 * @example | |
| 7444 * | |
| 7445 * _(' abc ') | |
| 7446 * .chain() | |
| 7447 * .trim() | |
| 7448 * .thru(function(value) { | |
| 7449 * return [value]; | |
| 7450 * }) | |
| 7451 * .value(); | |
| 7452 * // => ['abc'] | |
| 7453 */ | |
| 7454 function thru(value, interceptor, thisArg) { | |
| 7455 return interceptor.call(thisArg, value); | |
| 7456 } | |
| 7457 | |
| 7458 /** | |
| 7459 * Enables explicit method chaining on the wrapper object. | |
| 7460 * | |
| 7461 * @name chain | |
| 7462 * @memberOf _ | |
| 7463 * @category Chain | |
| 7464 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 7465 * @example | |
| 7466 * | |
| 7467 * var users = [ | |
| 7468 * { 'user': 'barney', 'age': 36 }, | |
| 7469 * { 'user': 'fred', 'age': 40 } | |
| 7470 * ]; | |
| 7471 * | |
| 7472 * // without explicit chaining | |
| 7473 * _(users).first(); | |
| 7474 * // => { 'user': 'barney', 'age': 36 } | |
| 7475 * | |
| 7476 * // with explicit chaining | |
| 7477 * _(users).chain() | |
| 7478 * .first() | |
| 7479 * .pick('user') | |
| 7480 * .value(); | |
| 7481 * // => { 'user': 'barney' } | |
| 7482 */ | |
| 7483 function wrapperChain() { | |
| 7484 return chain(this); | |
| 7485 } | |
| 7486 | |
| 7487 /** | |
| 7488 * Executes the chained sequence and returns the wrapped result. | |
| 7489 * | |
| 7490 * @name commit | |
| 7491 * @memberOf _ | |
| 7492 * @category Chain | |
| 7493 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 7494 * @example | |
| 7495 * | |
| 7496 * var array = [1, 2]; | |
| 7497 * var wrapper = _(array).push(3); | |
| 7498 * | |
| 7499 * console.log(array); | |
| 7500 * // => [1, 2] | |
| 7501 * | |
| 7502 * wrapper = wrapper.commit(); | |
| 7503 * console.log(array); | |
| 7504 * // => [1, 2, 3] | |
| 7505 * | |
| 7506 * wrapper.last(); | |
| 7507 * // => 3 | |
| 7508 * | |
| 7509 * console.log(array); | |
| 7510 * // => [1, 2, 3] | |
| 7511 */ | |
| 7512 function wrapperCommit() { | |
| 7513 return new LodashWrapper(this.value(), this.__chain__); | |
| 7514 } | |
| 7515 | |
| 7516 /** | |
| 7517 * Creates a clone of the chained sequence planting `value` as the wrapped value. | |
| 7518 * | |
| 7519 * @name plant | |
| 7520 * @memberOf _ | |
| 7521 * @category Chain | |
| 7522 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 7523 * @example | |
| 7524 * | |
| 7525 * var array = [1, 2]; | |
| 7526 * var wrapper = _(array).map(function(value) { | |
| 7527 * return Math.pow(value, 2); | |
| 7528 * }); | |
| 7529 * | |
| 7530 * var other = [3, 4]; | |
| 7531 * var otherWrapper = wrapper.plant(other); | |
| 7532 * | |
| 7533 * otherWrapper.value(); | |
| 7534 * // => [9, 16] | |
| 7535 * | |
| 7536 * wrapper.value(); | |
| 7537 * // => [1, 4] | |
| 7538 */ | |
| 7539 function wrapperPlant(value) { | |
| 7540 var result, | |
| 7541 parent = this; | |
| 7542 | |
| 7543 while (parent instanceof baseLodash) { | |
| 7544 var clone = wrapperClone(parent); | |
| 7545 if (result) { | |
| 7546 previous.__wrapped__ = clone; | |
| 7547 } else { | |
| 7548 result = clone; | |
| 7549 } | |
| 7550 var previous = clone; | |
| 7551 parent = parent.__wrapped__; | |
| 7552 } | |
| 7553 previous.__wrapped__ = value; | |
| 7554 return result; | |
| 7555 } | |
| 7556 | |
| 7557 /** | |
| 7558 * Reverses the wrapped array so the first element becomes the last, the | |
| 7559 * second element becomes the second to last, and so on. | |
| 7560 * | |
| 7561 * **Note:** This method mutates the wrapped array. | |
| 7562 * | |
| 7563 * @name reverse | |
| 7564 * @memberOf _ | |
| 7565 * @category Chain | |
| 7566 * @returns {Object} Returns the new reversed `lodash` wrapper instance. | |
| 7567 * @example | |
| 7568 * | |
| 7569 * var array = [1, 2, 3]; | |
| 7570 * | |
| 7571 * _(array).reverse().value() | |
| 7572 * // => [3, 2, 1] | |
| 7573 * | |
| 7574 * console.log(array); | |
| 7575 * // => [3, 2, 1] | |
| 7576 */ | |
| 7577 function wrapperReverse() { | |
| 7578 var value = this.__wrapped__; | |
| 7579 if (value instanceof LazyWrapper) { | |
| 7580 if (this.__actions__.length) { | |
| 7581 value = new LazyWrapper(this); | |
| 7582 } | |
| 7583 return new LodashWrapper(value.reverse(), this.__chain__); | |
| 7584 } | |
| 7585 return this.thru(function(value) { | |
| 7586 return value.reverse(); | |
| 7587 }); | |
| 7588 } | |
| 7589 | |
| 7590 /** | |
| 7591 * Produces the result of coercing the unwrapped value to a string. | |
| 7592 * | |
| 7593 * @name toString | |
| 7594 * @memberOf _ | |
| 7595 * @category Chain | |
| 7596 * @returns {string} Returns the coerced string value. | |
| 7597 * @example | |
| 7598 * | |
| 7599 * _([1, 2, 3]).toString(); | |
| 7600 * // => '1,2,3' | |
| 7601 */ | |
| 7602 function wrapperToString() { | |
| 7603 return (this.value() + ''); | |
| 7604 } | |
| 7605 | |
| 7606 /** | |
| 7607 * Executes the chained sequence to extract the unwrapped value. | |
| 7608 * | |
| 7609 * @name value | |
| 7610 * @memberOf _ | |
| 7611 * @alias run, toJSON, valueOf | |
| 7612 * @category Chain | |
| 7613 * @returns {*} Returns the resolved unwrapped value. | |
| 7614 * @example | |
| 7615 * | |
| 7616 * _([1, 2, 3]).value(); | |
| 7617 * // => [1, 2, 3] | |
| 7618 */ | |
| 7619 function wrapperValue() { | |
| 7620 return baseWrapperValue(this.__wrapped__, this.__actions__); | |
| 7621 } | |
| 7622 | |
| 7623 /*------------------------------------------------------------------------*/ | |
| 7624 | |
| 7625 /** | |
| 7626 * Creates an array of elements corresponding to the given keys, or indexes, | |
| 7627 * of `collection`. Keys may be specified as individual arguments or as arrays | |
| 7628 * of keys. | |
| 7629 * | |
| 7630 * @static | |
| 7631 * @memberOf _ | |
| 7632 * @category Collection | |
| 7633 * @param {Array|Object|string} collection The collection to iterate over. | |
| 7634 * @param {...(number|number[]|string|string[])} [props] The property names | |
| 7635 * or indexes of elements to pick, specified individually or in arrays. | |
| 7636 * @returns {Array} Returns the new array of picked elements. | |
| 7637 * @example | |
| 7638 * | |
| 7639 * _.at(['a', 'b', 'c'], [0, 2]); | |
| 7640 * // => ['a', 'c'] | |
| 7641 * | |
| 7642 * _.at(['barney', 'fred', 'pebbles'], 0, 2); | |
| 7643 * // => ['barney', 'pebbles'] | |
| 7644 */ | |
| 7645 var at = restParam(function(collection, props) { | |
| 7646 var length = collection ? getLength(collection) : 0; | |
| 7647 if (isLength(length)) { | |
| 7648 collection = toIterable(collection); | |
| 7649 } | |
| 7650 return baseAt(collection, baseFlatten(props)); | |
| 7651 }); | |
| 7652 | |
| 7653 /** | |
| 7654 * Creates an object composed of keys generated from the results of running | |
| 7655 * each element of `collection` through `iteratee`. The corresponding value | |
| 7656 * of each key is the number of times the key was returned by `iteratee`. | |
| 7657 * The `iteratee` is bound to `thisArg` and invoked with three arguments: | |
| 7658 * (value, index|key, collection). | |
| 7659 * | |
| 7660 * If a property name is provided for `iteratee` the created `_.property` | |
| 7661 * style callback returns the property value of the given element. | |
| 7662 * | |
| 7663 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7664 * style callback returns `true` for elements that have a matching property | |
| 7665 * value, else `false`. | |
| 7666 * | |
| 7667 * If an object is provided for `iteratee` the created `_.matches` style | |
| 7668 * callback returns `true` for elements that have the properties of the given | |
| 7669 * object, else `false`. | |
| 7670 * | |
| 7671 * @static | |
| 7672 * @memberOf _ | |
| 7673 * @category Collection | |
| 7674 * @param {Array|Object|string} collection The collection to iterate over. | |
| 7675 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 7676 * per iteration. | |
| 7677 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 7678 * @returns {Object} Returns the composed aggregate object. | |
| 7679 * @example | |
| 7680 * | |
| 7681 * _.countBy([4.3, 6.1, 6.4], function(n) { | |
| 7682 * return Math.floor(n); | |
| 7683 * }); | |
| 7684 * // => { '4': 1, '6': 2 } | |
| 7685 * | |
| 7686 * _.countBy([4.3, 6.1, 6.4], function(n) { | |
| 7687 * return this.floor(n); | |
| 7688 * }, Math); | |
| 7689 * // => { '4': 1, '6': 2 } | |
| 7690 * | |
| 7691 * _.countBy(['one', 'two', 'three'], 'length'); | |
| 7692 * // => { '3': 2, '5': 1 } | |
| 7693 */ | |
| 7694 var countBy = createAggregator(function(result, value, key) { | |
| 7695 hasOwnProperty.call(result, key) ? ++result[key] : (result[key] = 1); | |
| 7696 }); | |
| 7697 | |
| 7698 /** | |
| 7699 * Checks if `predicate` returns truthy for **all** elements of `collection`. | |
| 7700 * The predicate is bound to `thisArg` and invoked with three arguments: | |
| 7701 * (value, index|key, collection). | |
| 7702 * | |
| 7703 * If a property name is provided for `predicate` the created `_.property` | |
| 7704 * style callback returns the property value of the given element. | |
| 7705 * | |
| 7706 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7707 * style callback returns `true` for elements that have a matching property | |
| 7708 * value, else `false`. | |
| 7709 * | |
| 7710 * If an object is provided for `predicate` the created `_.matches` style | |
| 7711 * callback returns `true` for elements that have the properties of the given | |
| 7712 * object, else `false`. | |
| 7713 * | |
| 7714 * @static | |
| 7715 * @memberOf _ | |
| 7716 * @alias all | |
| 7717 * @category Collection | |
| 7718 * @param {Array|Object|string} collection The collection to iterate over. | |
| 7719 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 7720 * per iteration. | |
| 7721 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 7722 * @returns {boolean} Returns `true` if all elements pass the predicate check, | |
| 7723 * else `false`. | |
| 7724 * @example | |
| 7725 * | |
| 7726 * _.every([true, 1, null, 'yes'], Boolean); | |
| 7727 * // => false | |
| 7728 * | |
| 7729 * var users = [ | |
| 7730 * { 'user': 'barney', 'active': false }, | |
| 7731 * { 'user': 'fred', 'active': false } | |
| 7732 * ]; | |
| 7733 * | |
| 7734 * // using the `_.matches` callback shorthand | |
| 7735 * _.every(users, { 'user': 'barney', 'active': false }); | |
| 7736 * // => false | |
| 7737 * | |
| 7738 * // using the `_.matchesProperty` callback shorthand | |
| 7739 * _.every(users, 'active', false); | |
| 7740 * // => true | |
| 7741 * | |
| 7742 * // using the `_.property` callback shorthand | |
| 7743 * _.every(users, 'active'); | |
| 7744 * // => false | |
| 7745 */ | |
| 7746 function every(collection, predicate, thisArg) { | |
| 7747 var func = isArray(collection) ? arrayEvery : baseEvery; | |
| 7748 if (thisArg && isIterateeCall(collection, predicate, thisArg)) { | |
| 7749 predicate = null; | |
| 7750 } | |
| 7751 if (typeof predicate != 'function' || thisArg !== undefined) { | |
| 7752 predicate = getCallback(predicate, thisArg, 3); | |
| 7753 } | |
| 7754 return func(collection, predicate); | |
| 7755 } | |
| 7756 | |
| 7757 /** | |
| 7758 * Iterates over elements of `collection`, returning an array of all elements | |
| 7759 * `predicate` returns truthy for. The predicate is bound to `thisArg` and | |
| 7760 * invoked with three arguments: (value, index|key, collection). | |
| 7761 * | |
| 7762 * If a property name is provided for `predicate` the created `_.property` | |
| 7763 * style callback returns the property value of the given element. | |
| 7764 * | |
| 7765 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7766 * style callback returns `true` for elements that have a matching property | |
| 7767 * value, else `false`. | |
| 7768 * | |
| 7769 * If an object is provided for `predicate` the created `_.matches` style | |
| 7770 * callback returns `true` for elements that have the properties of the given | |
| 7771 * object, else `false`. | |
| 7772 * | |
| 7773 * @static | |
| 7774 * @memberOf _ | |
| 7775 * @alias select | |
| 7776 * @category Collection | |
| 7777 * @param {Array|Object|string} collection The collection to iterate over. | |
| 7778 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 7779 * per iteration. | |
| 7780 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 7781 * @returns {Array} Returns the new filtered array. | |
| 7782 * @example | |
| 7783 * | |
| 7784 * _.filter([4, 5, 6], function(n) { | |
| 7785 * return n % 2 == 0; | |
| 7786 * }); | |
| 7787 * // => [4, 6] | |
| 7788 * | |
| 7789 * var users = [ | |
| 7790 * { 'user': 'barney', 'age': 36, 'active': true }, | |
| 7791 * { 'user': 'fred', 'age': 40, 'active': false } | |
| 7792 * ]; | |
| 7793 * | |
| 7794 * // using the `_.matches` callback shorthand | |
| 7795 * _.pluck(_.filter(users, { 'age': 36, 'active': true }), 'user'); | |
| 7796 * // => ['barney'] | |
| 7797 * | |
| 7798 * // using the `_.matchesProperty` callback shorthand | |
| 7799 * _.pluck(_.filter(users, 'active', false), 'user'); | |
| 7800 * // => ['fred'] | |
| 7801 * | |
| 7802 * // using the `_.property` callback shorthand | |
| 7803 * _.pluck(_.filter(users, 'active'), 'user'); | |
| 7804 * // => ['barney'] | |
| 7805 */ | |
| 7806 function filter(collection, predicate, thisArg) { | |
| 7807 var func = isArray(collection) ? arrayFilter : baseFilter; | |
| 7808 predicate = getCallback(predicate, thisArg, 3); | |
| 7809 return func(collection, predicate); | |
| 7810 } | |
| 7811 | |
| 7812 /** | |
| 7813 * Iterates over elements of `collection`, returning the first element | |
| 7814 * `predicate` returns truthy for. The predicate is bound to `thisArg` and | |
| 7815 * invoked with three arguments: (value, index|key, collection). | |
| 7816 * | |
| 7817 * If a property name is provided for `predicate` the created `_.property` | |
| 7818 * style callback returns the property value of the given element. | |
| 7819 * | |
| 7820 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7821 * style callback returns `true` for elements that have a matching property | |
| 7822 * value, else `false`. | |
| 7823 * | |
| 7824 * If an object is provided for `predicate` the created `_.matches` style | |
| 7825 * callback returns `true` for elements that have the properties of the given | |
| 7826 * object, else `false`. | |
| 7827 * | |
| 7828 * @static | |
| 7829 * @memberOf _ | |
| 7830 * @alias detect | |
| 7831 * @category Collection | |
| 7832 * @param {Array|Object|string} collection The collection to search. | |
| 7833 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 7834 * per iteration. | |
| 7835 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 7836 * @returns {*} Returns the matched element, else `undefined`. | |
| 7837 * @example | |
| 7838 * | |
| 7839 * var users = [ | |
| 7840 * { 'user': 'barney', 'age': 36, 'active': true }, | |
| 7841 * { 'user': 'fred', 'age': 40, 'active': false }, | |
| 7842 * { 'user': 'pebbles', 'age': 1, 'active': true } | |
| 7843 * ]; | |
| 7844 * | |
| 7845 * _.result(_.find(users, function(chr) { | |
| 7846 * return chr.age < 40; | |
| 7847 * }), 'user'); | |
| 7848 * // => 'barney' | |
| 7849 * | |
| 7850 * // using the `_.matches` callback shorthand | |
| 7851 * _.result(_.find(users, { 'age': 1, 'active': true }), 'user'); | |
| 7852 * // => 'pebbles' | |
| 7853 * | |
| 7854 * // using the `_.matchesProperty` callback shorthand | |
| 7855 * _.result(_.find(users, 'active', false), 'user'); | |
| 7856 * // => 'fred' | |
| 7857 * | |
| 7858 * // using the `_.property` callback shorthand | |
| 7859 * _.result(_.find(users, 'active'), 'user'); | |
| 7860 * // => 'barney' | |
| 7861 */ | |
| 7862 var find = createFind(baseEach); | |
| 7863 | |
| 7864 /** | |
| 7865 * This method is like `_.find` except that it iterates over elements of | |
| 7866 * `collection` from right to left. | |
| 7867 * | |
| 7868 * @static | |
| 7869 * @memberOf _ | |
| 7870 * @category Collection | |
| 7871 * @param {Array|Object|string} collection The collection to search. | |
| 7872 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 7873 * per iteration. | |
| 7874 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 7875 * @returns {*} Returns the matched element, else `undefined`. | |
| 7876 * @example | |
| 7877 * | |
| 7878 * _.findLast([1, 2, 3, 4], function(n) { | |
| 7879 * return n % 2 == 1; | |
| 7880 * }); | |
| 7881 * // => 3 | |
| 7882 */ | |
| 7883 var findLast = createFind(baseEachRight, true); | |
| 7884 | |
| 7885 /** | |
| 7886 * Performs a deep comparison between each element in `collection` and the | |
| 7887 * source object, returning the first element that has equivalent property | |
| 7888 * values. | |
| 7889 * | |
| 7890 * **Note:** This method supports comparing arrays, booleans, `Date` objects, | |
| 7891 * numbers, `Object` objects, regexes, and strings. Objects are compared by | |
| 7892 * their own, not inherited, enumerable properties. For comparing a single | |
| 7893 * own or inherited property value see `_.matchesProperty`. | |
| 7894 * | |
| 7895 * @static | |
| 7896 * @memberOf _ | |
| 7897 * @category Collection | |
| 7898 * @param {Array|Object|string} collection The collection to search. | |
| 7899 * @param {Object} source The object of property values to match. | |
| 7900 * @returns {*} Returns the matched element, else `undefined`. | |
| 7901 * @example | |
| 7902 * | |
| 7903 * var users = [ | |
| 7904 * { 'user': 'barney', 'age': 36, 'active': true }, | |
| 7905 * { 'user': 'fred', 'age': 40, 'active': false } | |
| 7906 * ]; | |
| 7907 * | |
| 7908 * _.result(_.findWhere(users, { 'age': 36, 'active': true }), 'user'); | |
| 7909 * // => 'barney' | |
| 7910 * | |
| 7911 * _.result(_.findWhere(users, { 'age': 40, 'active': false }), 'user'); | |
| 7912 * // => 'fred' | |
| 7913 */ | |
| 7914 function findWhere(collection, source) { | |
| 7915 return find(collection, baseMatches(source)); | |
| 7916 } | |
| 7917 | |
| 7918 /** | |
| 7919 * Iterates over elements of `collection` invoking `iteratee` for each element. | |
| 7920 * The `iteratee` is bound to `thisArg` and invoked with three arguments: | |
| 7921 * (value, index|key, collection). Iteratee functions may exit iteration early | |
| 7922 * by explicitly returning `false`. | |
| 7923 * | |
| 7924 * **Note:** As with other "Collections" methods, objects with a "length" property | |
| 7925 * are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn` | |
| 7926 * may be used for object iteration. | |
| 7927 * | |
| 7928 * @static | |
| 7929 * @memberOf _ | |
| 7930 * @alias each | |
| 7931 * @category Collection | |
| 7932 * @param {Array|Object|string} collection The collection to iterate over. | |
| 7933 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 7934 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 7935 * @returns {Array|Object|string} Returns `collection`. | |
| 7936 * @example | |
| 7937 * | |
| 7938 * _([1, 2]).forEach(function(n) { | |
| 7939 * console.log(n); | |
| 7940 * }).value(); | |
| 7941 * // => logs each value from left to right and returns the array | |
| 7942 * | |
| 7943 * _.forEach({ 'a': 1, 'b': 2 }, function(n, key) { | |
| 7944 * console.log(n, key); | |
| 7945 * }); | |
| 7946 * // => logs each value-key pair and returns the object (iteration order is not guaranteed) | |
| 7947 */ | |
| 7948 var forEach = createForEach(arrayEach, baseEach); | |
| 7949 | |
| 7950 /** | |
| 7951 * This method is like `_.forEach` except that it iterates over elements of | |
| 7952 * `collection` from right to left. | |
| 7953 * | |
| 7954 * @static | |
| 7955 * @memberOf _ | |
| 7956 * @alias eachRight | |
| 7957 * @category Collection | |
| 7958 * @param {Array|Object|string} collection The collection to iterate over. | |
| 7959 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 7960 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 7961 * @returns {Array|Object|string} Returns `collection`. | |
| 7962 * @example | |
| 7963 * | |
| 7964 * _([1, 2]).forEachRight(function(n) { | |
| 7965 * console.log(n); | |
| 7966 * }).value(); | |
| 7967 * // => logs each value from right to left and returns the array | |
| 7968 */ | |
| 7969 var forEachRight = createForEach(arrayEachRight, baseEachRight); | |
| 7970 | |
| 7971 /** | |
| 7972 * Creates an object composed of keys generated from the results of running | |
| 7973 * each element of `collection` through `iteratee`. The corresponding value | |
| 7974 * of each key is an array of the elements responsible for generating the key. | |
| 7975 * The `iteratee` is bound to `thisArg` and invoked with three arguments: | |
| 7976 * (value, index|key, collection). | |
| 7977 * | |
| 7978 * If a property name is provided for `iteratee` the created `_.property` | |
| 7979 * style callback returns the property value of the given element. | |
| 7980 * | |
| 7981 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 7982 * style callback returns `true` for elements that have a matching property | |
| 7983 * value, else `false`. | |
| 7984 * | |
| 7985 * If an object is provided for `iteratee` the created `_.matches` style | |
| 7986 * callback returns `true` for elements that have the properties of the given | |
| 7987 * object, else `false`. | |
| 7988 * | |
| 7989 * @static | |
| 7990 * @memberOf _ | |
| 7991 * @category Collection | |
| 7992 * @param {Array|Object|string} collection The collection to iterate over. | |
| 7993 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 7994 * per iteration. | |
| 7995 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 7996 * @returns {Object} Returns the composed aggregate object. | |
| 7997 * @example | |
| 7998 * | |
| 7999 * _.groupBy([4.2, 6.1, 6.4], function(n) { | |
| 8000 * return Math.floor(n); | |
| 8001 * }); | |
| 8002 * // => { '4': [4.2], '6': [6.1, 6.4] } | |
| 8003 * | |
| 8004 * _.groupBy([4.2, 6.1, 6.4], function(n) { | |
| 8005 * return this.floor(n); | |
| 8006 * }, Math); | |
| 8007 * // => { '4': [4.2], '6': [6.1, 6.4] } | |
| 8008 * | |
| 8009 * // using the `_.property` callback shorthand | |
| 8010 * _.groupBy(['one', 'two', 'three'], 'length'); | |
| 8011 * // => { '3': ['one', 'two'], '5': ['three'] } | |
| 8012 */ | |
| 8013 var groupBy = createAggregator(function(result, value, key) { | |
| 8014 if (hasOwnProperty.call(result, key)) { | |
| 8015 result[key].push(value); | |
| 8016 } else { | |
| 8017 result[key] = [value]; | |
| 8018 } | |
| 8019 }); | |
| 8020 | |
| 8021 /** | |
| 8022 * Checks if `value` is in `collection` using `SameValueZero` for equality | |
| 8023 * comparisons. If `fromIndex` is negative, it is used as the offset from | |
| 8024 * the end of `collection`. | |
| 8025 * | |
| 8026 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero) | |
| 8027 * comparisons are like strict equality comparisons, e.g. `===`, except that | |
| 8028 * `NaN` matches `NaN`. | |
| 8029 * | |
| 8030 * @static | |
| 8031 * @memberOf _ | |
| 8032 * @alias contains, include | |
| 8033 * @category Collection | |
| 8034 * @param {Array|Object|string} collection The collection to search. | |
| 8035 * @param {*} target The value to search for. | |
| 8036 * @param {number} [fromIndex=0] The index to search from. | |
| 8037 * @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`. | |
| 8038 * @returns {boolean} Returns `true` if a matching element is found, else `false`. | |
| 8039 * @example | |
| 8040 * | |
| 8041 * _.includes([1, 2, 3], 1); | |
| 8042 * // => true | |
| 8043 * | |
| 8044 * _.includes([1, 2, 3], 1, 2); | |
| 8045 * // => false | |
| 8046 * | |
| 8047 * _.includes({ 'user': 'fred', 'age': 40 }, 'fred'); | |
| 8048 * // => true | |
| 8049 * | |
| 8050 * _.includes('pebbles', 'eb'); | |
| 8051 * // => true | |
| 8052 */ | |
| 8053 function includes(collection, target, fromIndex, guard) { | |
| 8054 var length = collection ? getLength(collection) : 0; | |
| 8055 if (!isLength(length)) { | |
| 8056 collection = values(collection); | |
| 8057 length = collection.length; | |
| 8058 } | |
| 8059 if (!length) { | |
| 8060 return false; | |
| 8061 } | |
| 8062 if (typeof fromIndex != 'number' || (guard && isIterateeCall(target, fromIndex, guard))) { | |
| 8063 fromIndex = 0; | |
| 8064 } else { | |
| 8065 fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0); | |
| 8066 } | |
| 8067 return (typeof collection == 'string' || !isArray(collection) && isString(collection)) | |
| 8068 ? (fromIndex < length && collection.indexOf(target, fromIndex) > -1) | |
| 8069 : (getIndexOf(collection, target, fromIndex) > -1); | |
| 8070 } | |
| 8071 | |
| 8072 /** | |
| 8073 * Creates an object composed of keys generated from the results of running | |
| 8074 * each element of `collection` through `iteratee`. The corresponding value | |
| 8075 * of each key is the last element responsible for generating the key. The | |
| 8076 * iteratee function is bound to `thisArg` and invoked with three arguments: | |
| 8077 * (value, index|key, collection). | |
| 8078 * | |
| 8079 * If a property name is provided for `iteratee` the created `_.property` | |
| 8080 * style callback returns the property value of the given element. | |
| 8081 * | |
| 8082 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 8083 * style callback returns `true` for elements that have a matching property | |
| 8084 * value, else `false`. | |
| 8085 * | |
| 8086 * If an object is provided for `iteratee` the created `_.matches` style | |
| 8087 * callback returns `true` for elements that have the properties of the given | |
| 8088 * object, else `false`. | |
| 8089 * | |
| 8090 * @static | |
| 8091 * @memberOf _ | |
| 8092 * @category Collection | |
| 8093 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8094 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 8095 * per iteration. | |
| 8096 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 8097 * @returns {Object} Returns the composed aggregate object. | |
| 8098 * @example | |
| 8099 * | |
| 8100 * var keyData = [ | |
| 8101 * { 'dir': 'left', 'code': 97 }, | |
| 8102 * { 'dir': 'right', 'code': 100 } | |
| 8103 * ]; | |
| 8104 * | |
| 8105 * _.indexBy(keyData, 'dir'); | |
| 8106 * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } | |
| 8107 * | |
| 8108 * _.indexBy(keyData, function(object) { | |
| 8109 * return String.fromCharCode(object.code); | |
| 8110 * }); | |
| 8111 * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } | |
| 8112 * | |
| 8113 * _.indexBy(keyData, function(object) { | |
| 8114 * return this.fromCharCode(object.code); | |
| 8115 * }, String); | |
| 8116 * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } | |
| 8117 */ | |
| 8118 var indexBy = createAggregator(function(result, value, key) { | |
| 8119 result[key] = value; | |
| 8120 }); | |
| 8121 | |
| 8122 /** | |
| 8123 * Invokes the method at `path` on each element in `collection`, returning | |
| 8124 * an array of the results of each invoked method. Any additional arguments | |
| 8125 * are provided to each invoked method. If `methodName` is a function it is | |
| 8126 * invoked for, and `this` bound to, each element in `collection`. | |
| 8127 * | |
| 8128 * @static | |
| 8129 * @memberOf _ | |
| 8130 * @category Collection | |
| 8131 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8132 * @param {Array|Function|string} path The path of the method to invoke or | |
| 8133 * the function invoked per iteration. | |
| 8134 * @param {...*} [args] The arguments to invoke the method with. | |
| 8135 * @returns {Array} Returns the array of results. | |
| 8136 * @example | |
| 8137 * | |
| 8138 * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort'); | |
| 8139 * // => [[1, 5, 7], [1, 2, 3]] | |
| 8140 * | |
| 8141 * _.invoke([123, 456], String.prototype.split, ''); | |
| 8142 * // => [['1', '2', '3'], ['4', '5', '6']] | |
| 8143 */ | |
| 8144 var invoke = restParam(function(collection, path, args) { | |
| 8145 var index = -1, | |
| 8146 isFunc = typeof path == 'function', | |
| 8147 isProp = isKey(path), | |
| 8148 length = getLength(collection), | |
| 8149 result = isLength(length) ? Array(length) : []; | |
| 8150 | |
| 8151 baseEach(collection, function(value) { | |
| 8152 var func = isFunc ? path : (isProp && value != null && value[path]); | |
| 8153 result[++index] = func ? func.apply(value, args) : invokePath(value, path, args); | |
| 8154 }); | |
| 8155 return result; | |
| 8156 }); | |
| 8157 | |
| 8158 /** | |
| 8159 * Creates an array of values by running each element in `collection` through | |
| 8160 * `iteratee`. The `iteratee` is bound to `thisArg` and invoked with three | |
| 8161 * arguments: (value, index|key, collection). | |
| 8162 * | |
| 8163 * If a property name is provided for `iteratee` the created `_.property` | |
| 8164 * style callback returns the property value of the given element. | |
| 8165 * | |
| 8166 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 8167 * style callback returns `true` for elements that have a matching property | |
| 8168 * value, else `false`. | |
| 8169 * | |
| 8170 * If an object is provided for `iteratee` the created `_.matches` style | |
| 8171 * callback returns `true` for elements that have the properties of the given | |
| 8172 * object, else `false`. | |
| 8173 * | |
| 8174 * Many lodash methods are guarded to work as interatees for methods like | |
| 8175 * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`. | |
| 8176 * | |
| 8177 * The guarded methods are: | |
| 8178 * `ary`, `callback`, `chunk`, `clone`, `create`, `curry`, `curryRight`, `drop`, | |
| 8179 * `dropRight`, `every`, `fill`, `flatten`, `invert`, `max`, `min`, `parseInt`, | |
| 8180 * `slice`, `sortBy`, `take`, `takeRight`, `template`, `trim`, `trimLeft`, | |
| 8181 * `trimRight`, `trunc`, `random`, `range`, `sample`, `some`, `uniq`, and `words` | |
| 8182 * | |
| 8183 * @static | |
| 8184 * @memberOf _ | |
| 8185 * @alias collect | |
| 8186 * @category Collection | |
| 8187 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8188 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 8189 * per iteration. | |
| 8190 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 8191 * @returns {Array} Returns the new mapped array. | |
| 8192 * @example | |
| 8193 * | |
| 8194 * function timesThree(n) { | |
| 8195 * return n * 3; | |
| 8196 * } | |
| 8197 * | |
| 8198 * _.map([1, 2], timesThree); | |
| 8199 * // => [3, 6] | |
| 8200 * | |
| 8201 * _.map({ 'a': 1, 'b': 2 }, timesThree); | |
| 8202 * // => [3, 6] (iteration order is not guaranteed) | |
| 8203 * | |
| 8204 * var users = [ | |
| 8205 * { 'user': 'barney' }, | |
| 8206 * { 'user': 'fred' } | |
| 8207 * ]; | |
| 8208 * | |
| 8209 * // using the `_.property` callback shorthand | |
| 8210 * _.map(users, 'user'); | |
| 8211 * // => ['barney', 'fred'] | |
| 8212 */ | |
| 8213 function map(collection, iteratee, thisArg) { | |
| 8214 var func = isArray(collection) ? arrayMap : baseMap; | |
| 8215 iteratee = getCallback(iteratee, thisArg, 3); | |
| 8216 return func(collection, iteratee); | |
| 8217 } | |
| 8218 | |
| 8219 /** | |
| 8220 * Creates an array of elements split into two groups, the first of which | |
| 8221 * contains elements `predicate` returns truthy for, while the second of which | |
| 8222 * contains elements `predicate` returns falsey for. The predicate is bound | |
| 8223 * to `thisArg` and invoked with three arguments: (value, index|key, collection). | |
| 8224 * | |
| 8225 * If a property name is provided for `predicate` the created `_.property` | |
| 8226 * style callback returns the property value of the given element. | |
| 8227 * | |
| 8228 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 8229 * style callback returns `true` for elements that have a matching property | |
| 8230 * value, else `false`. | |
| 8231 * | |
| 8232 * If an object is provided for `predicate` the created `_.matches` style | |
| 8233 * callback returns `true` for elements that have the properties of the given | |
| 8234 * object, else `false`. | |
| 8235 * | |
| 8236 * @static | |
| 8237 * @memberOf _ | |
| 8238 * @category Collection | |
| 8239 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8240 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 8241 * per iteration. | |
| 8242 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 8243 * @returns {Array} Returns the array of grouped elements. | |
| 8244 * @example | |
| 8245 * | |
| 8246 * _.partition([1, 2, 3], function(n) { | |
| 8247 * return n % 2; | |
| 8248 * }); | |
| 8249 * // => [[1, 3], [2]] | |
| 8250 * | |
| 8251 * _.partition([1.2, 2.3, 3.4], function(n) { | |
| 8252 * return this.floor(n) % 2; | |
| 8253 * }, Math); | |
| 8254 * // => [[1.2, 3.4], [2.3]] | |
| 8255 * | |
| 8256 * var users = [ | |
| 8257 * { 'user': 'barney', 'age': 36, 'active': false }, | |
| 8258 * { 'user': 'fred', 'age': 40, 'active': true }, | |
| 8259 * { 'user': 'pebbles', 'age': 1, 'active': false } | |
| 8260 * ]; | |
| 8261 * | |
| 8262 * var mapper = function(array) { | |
| 8263 * return _.pluck(array, 'user'); | |
| 8264 * }; | |
| 8265 * | |
| 8266 * // using the `_.matches` callback shorthand | |
| 8267 * _.map(_.partition(users, { 'age': 1, 'active': false }), mapper); | |
| 8268 * // => [['pebbles'], ['barney', 'fred']] | |
| 8269 * | |
| 8270 * // using the `_.matchesProperty` callback shorthand | |
| 8271 * _.map(_.partition(users, 'active', false), mapper); | |
| 8272 * // => [['barney', 'pebbles'], ['fred']] | |
| 8273 * | |
| 8274 * // using the `_.property` callback shorthand | |
| 8275 * _.map(_.partition(users, 'active'), mapper); | |
| 8276 * // => [['fred'], ['barney', 'pebbles']] | |
| 8277 */ | |
| 8278 var partition = createAggregator(function(result, value, key) { | |
| 8279 result[key ? 0 : 1].push(value); | |
| 8280 }, function() { return [[], []]; }); | |
| 8281 | |
| 8282 /** | |
| 8283 * Gets the property value of `path` from all elements in `collection`. | |
| 8284 * | |
| 8285 * @static | |
| 8286 * @memberOf _ | |
| 8287 * @category Collection | |
| 8288 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8289 * @param {Array|string} path The path of the property to pluck. | |
| 8290 * @returns {Array} Returns the property values. | |
| 8291 * @example | |
| 8292 * | |
| 8293 * var users = [ | |
| 8294 * { 'user': 'barney', 'age': 36 }, | |
| 8295 * { 'user': 'fred', 'age': 40 } | |
| 8296 * ]; | |
| 8297 * | |
| 8298 * _.pluck(users, 'user'); | |
| 8299 * // => ['barney', 'fred'] | |
| 8300 * | |
| 8301 * var userIndex = _.indexBy(users, 'user'); | |
| 8302 * _.pluck(userIndex, 'age'); | |
| 8303 * // => [36, 40] (iteration order is not guaranteed) | |
| 8304 */ | |
| 8305 function pluck(collection, path) { | |
| 8306 return map(collection, property(path)); | |
| 8307 } | |
| 8308 | |
| 8309 /** | |
| 8310 * Reduces `collection` to a value which is the accumulated result of running | |
| 8311 * each element in `collection` through `iteratee`, where each successive | |
| 8312 * invocation is supplied the return value of the previous. If `accumulator` | |
| 8313 * is not provided the first element of `collection` is used as the initial | |
| 8314 * value. The `iteratee` is bound to `thisArg` and invoked with four arguments: | |
| 8315 * (accumulator, value, index|key, collection). | |
| 8316 * | |
| 8317 * Many lodash methods are guarded to work as interatees for methods like | |
| 8318 * `_.reduce`, `_.reduceRight`, and `_.transform`. | |
| 8319 * | |
| 8320 * The guarded methods are: | |
| 8321 * `assign`, `defaults`, `includes`, `merge`, `sortByAll`, and `sortByOrder` | |
| 8322 * | |
| 8323 * @static | |
| 8324 * @memberOf _ | |
| 8325 * @alias foldl, inject | |
| 8326 * @category Collection | |
| 8327 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8328 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 8329 * @param {*} [accumulator] The initial value. | |
| 8330 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 8331 * @returns {*} Returns the accumulated value. | |
| 8332 * @example | |
| 8333 * | |
| 8334 * _.reduce([1, 2], function(total, n) { | |
| 8335 * return total + n; | |
| 8336 * }); | |
| 8337 * // => 3 | |
| 8338 * | |
| 8339 * _.reduce({ 'a': 1, 'b': 2 }, function(result, n, key) { | |
| 8340 * result[key] = n * 3; | |
| 8341 * return result; | |
| 8342 * }, {}); | |
| 8343 * // => { 'a': 3, 'b': 6 } (iteration order is not guaranteed) | |
| 8344 */ | |
| 8345 var reduce = createReduce(arrayReduce, baseEach); | |
| 8346 | |
| 8347 /** | |
| 8348 * This method is like `_.reduce` except that it iterates over elements of | |
| 8349 * `collection` from right to left. | |
| 8350 * | |
| 8351 * @static | |
| 8352 * @memberOf _ | |
| 8353 * @alias foldr | |
| 8354 * @category Collection | |
| 8355 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8356 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 8357 * @param {*} [accumulator] The initial value. | |
| 8358 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 8359 * @returns {*} Returns the accumulated value. | |
| 8360 * @example | |
| 8361 * | |
| 8362 * var array = [[0, 1], [2, 3], [4, 5]]; | |
| 8363 * | |
| 8364 * _.reduceRight(array, function(flattened, other) { | |
| 8365 * return flattened.concat(other); | |
| 8366 * }, []); | |
| 8367 * // => [4, 5, 2, 3, 0, 1] | |
| 8368 */ | |
| 8369 var reduceRight = createReduce(arrayReduceRight, baseEachRight); | |
| 8370 | |
| 8371 /** | |
| 8372 * The opposite of `_.filter`; this method returns the elements of `collection` | |
| 8373 * that `predicate` does **not** return truthy for. | |
| 8374 * | |
| 8375 * If a property name is provided for `predicate` the created `_.property` | |
| 8376 * style callback returns the property value of the given element. | |
| 8377 * | |
| 8378 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 8379 * style callback returns `true` for elements that have a matching property | |
| 8380 * value, else `false`. | |
| 8381 * | |
| 8382 * If an object is provided for `predicate` the created `_.matches` style | |
| 8383 * callback returns `true` for elements that have the properties of the given | |
| 8384 * object, else `false`. | |
| 8385 * | |
| 8386 * @static | |
| 8387 * @memberOf _ | |
| 8388 * @category Collection | |
| 8389 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8390 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 8391 * per iteration. | |
| 8392 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 8393 * @returns {Array} Returns the new filtered array. | |
| 8394 * @example | |
| 8395 * | |
| 8396 * _.reject([1, 2, 3, 4], function(n) { | |
| 8397 * return n % 2 == 0; | |
| 8398 * }); | |
| 8399 * // => [1, 3] | |
| 8400 * | |
| 8401 * var users = [ | |
| 8402 * { 'user': 'barney', 'age': 36, 'active': false }, | |
| 8403 * { 'user': 'fred', 'age': 40, 'active': true } | |
| 8404 * ]; | |
| 8405 * | |
| 8406 * // using the `_.matches` callback shorthand | |
| 8407 * _.pluck(_.reject(users, { 'age': 40, 'active': true }), 'user'); | |
| 8408 * // => ['barney'] | |
| 8409 * | |
| 8410 * // using the `_.matchesProperty` callback shorthand | |
| 8411 * _.pluck(_.reject(users, 'active', false), 'user'); | |
| 8412 * // => ['fred'] | |
| 8413 * | |
| 8414 * // using the `_.property` callback shorthand | |
| 8415 * _.pluck(_.reject(users, 'active'), 'user'); | |
| 8416 * // => ['barney'] | |
| 8417 */ | |
| 8418 function reject(collection, predicate, thisArg) { | |
| 8419 var func = isArray(collection) ? arrayFilter : baseFilter; | |
| 8420 predicate = getCallback(predicate, thisArg, 3); | |
| 8421 return func(collection, function(value, index, collection) { | |
| 8422 return !predicate(value, index, collection); | |
| 8423 }); | |
| 8424 } | |
| 8425 | |
| 8426 /** | |
| 8427 * Gets a random element or `n` random elements from a collection. | |
| 8428 * | |
| 8429 * @static | |
| 8430 * @memberOf _ | |
| 8431 * @category Collection | |
| 8432 * @param {Array|Object|string} collection The collection to sample. | |
| 8433 * @param {number} [n] The number of elements to sample. | |
| 8434 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 8435 * @returns {*} Returns the random sample(s). | |
| 8436 * @example | |
| 8437 * | |
| 8438 * _.sample([1, 2, 3, 4]); | |
| 8439 * // => 2 | |
| 8440 * | |
| 8441 * _.sample([1, 2, 3, 4], 2); | |
| 8442 * // => [3, 1] | |
| 8443 */ | |
| 8444 function sample(collection, n, guard) { | |
| 8445 if (guard ? isIterateeCall(collection, n, guard) : n == null) { | |
| 8446 collection = toIterable(collection); | |
| 8447 var length = collection.length; | |
| 8448 return length > 0 ? collection[baseRandom(0, length - 1)] : undefined; | |
| 8449 } | |
| 8450 var result = shuffle(collection); | |
| 8451 result.length = nativeMin(n < 0 ? 0 : (+n || 0), result.length); | |
| 8452 return result; | |
| 8453 } | |
| 8454 | |
| 8455 /** | |
| 8456 * Creates an array of shuffled values, using a version of the | |
| 8457 * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle). | |
| 8458 * | |
| 8459 * @static | |
| 8460 * @memberOf _ | |
| 8461 * @category Collection | |
| 8462 * @param {Array|Object|string} collection The collection to shuffle. | |
| 8463 * @returns {Array} Returns the new shuffled array. | |
| 8464 * @example | |
| 8465 * | |
| 8466 * _.shuffle([1, 2, 3, 4]); | |
| 8467 * // => [4, 1, 3, 2] | |
| 8468 */ | |
| 8469 function shuffle(collection) { | |
| 8470 collection = toIterable(collection); | |
| 8471 | |
| 8472 var index = -1, | |
| 8473 length = collection.length, | |
| 8474 result = Array(length); | |
| 8475 | |
| 8476 while (++index < length) { | |
| 8477 var rand = baseRandom(0, index); | |
| 8478 if (index != rand) { | |
| 8479 result[index] = result[rand]; | |
| 8480 } | |
| 8481 result[rand] = collection[index]; | |
| 8482 } | |
| 8483 return result; | |
| 8484 } | |
| 8485 | |
| 8486 /** | |
| 8487 * Gets the size of `collection` by returning its length for array-like | |
| 8488 * values or the number of own enumerable properties for objects. | |
| 8489 * | |
| 8490 * @static | |
| 8491 * @memberOf _ | |
| 8492 * @category Collection | |
| 8493 * @param {Array|Object|string} collection The collection to inspect. | |
| 8494 * @returns {number} Returns the size of `collection`. | |
| 8495 * @example | |
| 8496 * | |
| 8497 * _.size([1, 2, 3]); | |
| 8498 * // => 3 | |
| 8499 * | |
| 8500 * _.size({ 'a': 1, 'b': 2 }); | |
| 8501 * // => 2 | |
| 8502 * | |
| 8503 * _.size('pebbles'); | |
| 8504 * // => 7 | |
| 8505 */ | |
| 8506 function size(collection) { | |
| 8507 var length = collection ? getLength(collection) : 0; | |
| 8508 return isLength(length) ? length : keys(collection).length; | |
| 8509 } | |
| 8510 | |
| 8511 /** | |
| 8512 * Checks if `predicate` returns truthy for **any** element of `collection`. | |
| 8513 * The function returns as soon as it finds a passing value and does not iterate | |
| 8514 * over the entire collection. The predicate is bound to `thisArg` and invoked | |
| 8515 * with three arguments: (value, index|key, collection). | |
| 8516 * | |
| 8517 * If a property name is provided for `predicate` the created `_.property` | |
| 8518 * style callback returns the property value of the given element. | |
| 8519 * | |
| 8520 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 8521 * style callback returns `true` for elements that have a matching property | |
| 8522 * value, else `false`. | |
| 8523 * | |
| 8524 * If an object is provided for `predicate` the created `_.matches` style | |
| 8525 * callback returns `true` for elements that have the properties of the given | |
| 8526 * object, else `false`. | |
| 8527 * | |
| 8528 * @static | |
| 8529 * @memberOf _ | |
| 8530 * @alias any | |
| 8531 * @category Collection | |
| 8532 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8533 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 8534 * per iteration. | |
| 8535 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 8536 * @returns {boolean} Returns `true` if any element passes the predicate check, | |
| 8537 * else `false`. | |
| 8538 * @example | |
| 8539 * | |
| 8540 * _.some([null, 0, 'yes', false], Boolean); | |
| 8541 * // => true | |
| 8542 * | |
| 8543 * var users = [ | |
| 8544 * { 'user': 'barney', 'active': true }, | |
| 8545 * { 'user': 'fred', 'active': false } | |
| 8546 * ]; | |
| 8547 * | |
| 8548 * // using the `_.matches` callback shorthand | |
| 8549 * _.some(users, { 'user': 'barney', 'active': false }); | |
| 8550 * // => false | |
| 8551 * | |
| 8552 * // using the `_.matchesProperty` callback shorthand | |
| 8553 * _.some(users, 'active', false); | |
| 8554 * // => true | |
| 8555 * | |
| 8556 * // using the `_.property` callback shorthand | |
| 8557 * _.some(users, 'active'); | |
| 8558 * // => true | |
| 8559 */ | |
| 8560 function some(collection, predicate, thisArg) { | |
| 8561 var func = isArray(collection) ? arraySome : baseSome; | |
| 8562 if (thisArg && isIterateeCall(collection, predicate, thisArg)) { | |
| 8563 predicate = null; | |
| 8564 } | |
| 8565 if (typeof predicate != 'function' || thisArg !== undefined) { | |
| 8566 predicate = getCallback(predicate, thisArg, 3); | |
| 8567 } | |
| 8568 return func(collection, predicate); | |
| 8569 } | |
| 8570 | |
| 8571 /** | |
| 8572 * Creates an array of elements, sorted in ascending order by the results of | |
| 8573 * running each element in a collection through `iteratee`. This method performs | |
| 8574 * a stable sort, that is, it preserves the original sort order of equal elements. | |
| 8575 * The `iteratee` is bound to `thisArg` and invoked with three arguments: | |
| 8576 * (value, index|key, collection). | |
| 8577 * | |
| 8578 * If a property name is provided for `iteratee` the created `_.property` | |
| 8579 * style callback returns the property value of the given element. | |
| 8580 * | |
| 8581 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 8582 * style callback returns `true` for elements that have a matching property | |
| 8583 * value, else `false`. | |
| 8584 * | |
| 8585 * If an object is provided for `iteratee` the created `_.matches` style | |
| 8586 * callback returns `true` for elements that have the properties of the given | |
| 8587 * object, else `false`. | |
| 8588 * | |
| 8589 * @static | |
| 8590 * @memberOf _ | |
| 8591 * @category Collection | |
| 8592 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8593 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 8594 * per iteration. | |
| 8595 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 8596 * @returns {Array} Returns the new sorted array. | |
| 8597 * @example | |
| 8598 * | |
| 8599 * _.sortBy([1, 2, 3], function(n) { | |
| 8600 * return Math.sin(n); | |
| 8601 * }); | |
| 8602 * // => [3, 1, 2] | |
| 8603 * | |
| 8604 * _.sortBy([1, 2, 3], function(n) { | |
| 8605 * return this.sin(n); | |
| 8606 * }, Math); | |
| 8607 * // => [3, 1, 2] | |
| 8608 * | |
| 8609 * var users = [ | |
| 8610 * { 'user': 'fred' }, | |
| 8611 * { 'user': 'pebbles' }, | |
| 8612 * { 'user': 'barney' } | |
| 8613 * ]; | |
| 8614 * | |
| 8615 * // using the `_.property` callback shorthand | |
| 8616 * _.pluck(_.sortBy(users, 'user'), 'user'); | |
| 8617 * // => ['barney', 'fred', 'pebbles'] | |
| 8618 */ | |
| 8619 function sortBy(collection, iteratee, thisArg) { | |
| 8620 if (collection == null) { | |
| 8621 return []; | |
| 8622 } | |
| 8623 if (thisArg && isIterateeCall(collection, iteratee, thisArg)) { | |
| 8624 iteratee = null; | |
| 8625 } | |
| 8626 var index = -1; | |
| 8627 iteratee = getCallback(iteratee, thisArg, 3); | |
| 8628 | |
| 8629 var result = baseMap(collection, function(value, key, collection) { | |
| 8630 return { 'criteria': iteratee(value, key, collection), 'index': ++index, 'value': value }; | |
| 8631 }); | |
| 8632 return baseSortBy(result, compareAscending); | |
| 8633 } | |
| 8634 | |
| 8635 /** | |
| 8636 * This method is like `_.sortBy` except that it can sort by multiple iteratees | |
| 8637 * or property names. | |
| 8638 * | |
| 8639 * If a property name is provided for an iteratee the created `_.property` | |
| 8640 * style callback returns the property value of the given element. | |
| 8641 * | |
| 8642 * If an object is provided for an iteratee the created `_.matches` style | |
| 8643 * callback returns `true` for elements that have the properties of the given | |
| 8644 * object, else `false`. | |
| 8645 * | |
| 8646 * @static | |
| 8647 * @memberOf _ | |
| 8648 * @category Collection | |
| 8649 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8650 * @param {...(Function|Function[]|Object|Object[]|string|string[])} iteratees | |
| 8651 * The iteratees to sort by, specified as individual values or arrays of values. | |
| 8652 * @returns {Array} Returns the new sorted array. | |
| 8653 * @example | |
| 8654 * | |
| 8655 * var users = [ | |
| 8656 * { 'user': 'fred', 'age': 48 }, | |
| 8657 * { 'user': 'barney', 'age': 36 }, | |
| 8658 * { 'user': 'fred', 'age': 42 }, | |
| 8659 * { 'user': 'barney', 'age': 34 } | |
| 8660 * ]; | |
| 8661 * | |
| 8662 * _.map(_.sortByAll(users, ['user', 'age']), _.values); | |
| 8663 * // => [['barney', 34], ['barney', 36], ['fred', 42], ['fred', 48]] | |
| 8664 * | |
| 8665 * _.map(_.sortByAll(users, 'user', function(chr) { | |
| 8666 * return Math.floor(chr.age / 10); | |
| 8667 * }), _.values); | |
| 8668 * // => [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]] | |
| 8669 */ | |
| 8670 var sortByAll = restParam(function(collection, iteratees) { | |
| 8671 if (collection == null) { | |
| 8672 return []; | |
| 8673 } | |
| 8674 var guard = iteratees[2]; | |
| 8675 if (guard && isIterateeCall(iteratees[0], iteratees[1], guard)) { | |
| 8676 iteratees.length = 1; | |
| 8677 } | |
| 8678 return baseSortByOrder(collection, baseFlatten(iteratees), []); | |
| 8679 }); | |
| 8680 | |
| 8681 /** | |
| 8682 * This method is like `_.sortByAll` except that it allows specifying the | |
| 8683 * sort orders of the iteratees to sort by. A truthy value in `orders` will | |
| 8684 * sort the corresponding property name in ascending order while a falsey | |
| 8685 * value will sort it in descending order. | |
| 8686 * | |
| 8687 * If a property name is provided for an iteratee the created `_.property` | |
| 8688 * style callback returns the property value of the given element. | |
| 8689 * | |
| 8690 * If an object is provided for an iteratee the created `_.matches` style | |
| 8691 * callback returns `true` for elements that have the properties of the given | |
| 8692 * object, else `false`. | |
| 8693 * | |
| 8694 * @static | |
| 8695 * @memberOf _ | |
| 8696 * @category Collection | |
| 8697 * @param {Array|Object|string} collection The collection to iterate over. | |
| 8698 * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. | |
| 8699 * @param {boolean[]} orders The sort orders of `iteratees`. | |
| 8700 * @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`. | |
| 8701 * @returns {Array} Returns the new sorted array. | |
| 8702 * @example | |
| 8703 * | |
| 8704 * var users = [ | |
| 8705 * { 'user': 'fred', 'age': 48 }, | |
| 8706 * { 'user': 'barney', 'age': 34 }, | |
| 8707 * { 'user': 'fred', 'age': 42 }, | |
| 8708 * { 'user': 'barney', 'age': 36 } | |
| 8709 * ]; | |
| 8710 * | |
| 8711 * // sort by `user` in ascending order and by `age` in descending order | |
| 8712 * _.map(_.sortByOrder(users, ['user', 'age'], [true, false]), _.values); | |
| 8713 * // => [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]] | |
| 8714 */ | |
| 8715 function sortByOrder(collection, iteratees, orders, guard) { | |
| 8716 if (collection == null) { | |
| 8717 return []; | |
| 8718 } | |
| 8719 if (guard && isIterateeCall(iteratees, orders, guard)) { | |
| 8720 orders = null; | |
| 8721 } | |
| 8722 if (!isArray(iteratees)) { | |
| 8723 iteratees = iteratees == null ? [] : [iteratees]; | |
| 8724 } | |
| 8725 if (!isArray(orders)) { | |
| 8726 orders = orders == null ? [] : [orders]; | |
| 8727 } | |
| 8728 return baseSortByOrder(collection, iteratees, orders); | |
| 8729 } | |
| 8730 | |
| 8731 /** | |
| 8732 * Performs a deep comparison between each element in `collection` and the | |
| 8733 * source object, returning an array of all elements that have equivalent | |
| 8734 * property values. | |
| 8735 * | |
| 8736 * **Note:** This method supports comparing arrays, booleans, `Date` objects, | |
| 8737 * numbers, `Object` objects, regexes, and strings. Objects are compared by | |
| 8738 * their own, not inherited, enumerable properties. For comparing a single | |
| 8739 * own or inherited property value see `_.matchesProperty`. | |
| 8740 * | |
| 8741 * @static | |
| 8742 * @memberOf _ | |
| 8743 * @category Collection | |
| 8744 * @param {Array|Object|string} collection The collection to search. | |
| 8745 * @param {Object} source The object of property values to match. | |
| 8746 * @returns {Array} Returns the new filtered array. | |
| 8747 * @example | |
| 8748 * | |
| 8749 * var users = [ | |
| 8750 * { 'user': 'barney', 'age': 36, 'active': false, 'pets': ['hoppy'] }, | |
| 8751 * { 'user': 'fred', 'age': 40, 'active': true, 'pets': ['baby puss', 'dino'] } | |
| 8752 * ]; | |
| 8753 * | |
| 8754 * _.pluck(_.where(users, { 'age': 36, 'active': false }), 'user'); | |
| 8755 * // => ['barney'] | |
| 8756 * | |
| 8757 * _.pluck(_.where(users, { 'pets': ['dino'] }), 'user'); | |
| 8758 * // => ['fred'] | |
| 8759 */ | |
| 8760 function where(collection, source) { | |
| 8761 return filter(collection, baseMatches(source)); | |
| 8762 } | |
| 8763 | |
| 8764 /*------------------------------------------------------------------------*/ | |
| 8765 | |
| 8766 /** | |
| 8767 * Gets the number of milliseconds that have elapsed since the Unix epoch | |
| 8768 * (1 January 1970 00:00:00 UTC). | |
| 8769 * | |
| 8770 * @static | |
| 8771 * @memberOf _ | |
| 8772 * @category Date | |
| 8773 * @example | |
| 8774 * | |
| 8775 * _.defer(function(stamp) { | |
| 8776 * console.log(_.now() - stamp); | |
| 8777 * }, _.now()); | |
| 8778 * // => logs the number of milliseconds it took for the deferred function to be invoked | |
| 8779 */ | |
| 8780 var now = nativeNow || function() { | |
| 8781 return new Date().getTime(); | |
| 8782 }; | |
| 8783 | |
| 8784 /*------------------------------------------------------------------------*/ | |
| 8785 | |
| 8786 /** | |
| 8787 * The opposite of `_.before`; this method creates a function that invokes | |
| 8788 * `func` once it is called `n` or more times. | |
| 8789 * | |
| 8790 * @static | |
| 8791 * @memberOf _ | |
| 8792 * @category Function | |
| 8793 * @param {number} n The number of calls before `func` is invoked. | |
| 8794 * @param {Function} func The function to restrict. | |
| 8795 * @returns {Function} Returns the new restricted function. | |
| 8796 * @example | |
| 8797 * | |
| 8798 * var saves = ['profile', 'settings']; | |
| 8799 * | |
| 8800 * var done = _.after(saves.length, function() { | |
| 8801 * console.log('done saving!'); | |
| 8802 * }); | |
| 8803 * | |
| 8804 * _.forEach(saves, function(type) { | |
| 8805 * asyncSave({ 'type': type, 'complete': done }); | |
| 8806 * }); | |
| 8807 * // => logs 'done saving!' after the two async saves have completed | |
| 8808 */ | |
| 8809 function after(n, func) { | |
| 8810 if (typeof func != 'function') { | |
| 8811 if (typeof n == 'function') { | |
| 8812 var temp = n; | |
| 8813 n = func; | |
| 8814 func = temp; | |
| 8815 } else { | |
| 8816 throw new TypeError(FUNC_ERROR_TEXT); | |
| 8817 } | |
| 8818 } | |
| 8819 n = nativeIsFinite(n = +n) ? n : 0; | |
| 8820 return function() { | |
| 8821 if (--n < 1) { | |
| 8822 return func.apply(this, arguments); | |
| 8823 } | |
| 8824 }; | |
| 8825 } | |
| 8826 | |
| 8827 /** | |
| 8828 * Creates a function that accepts up to `n` arguments ignoring any | |
| 8829 * additional arguments. | |
| 8830 * | |
| 8831 * @static | |
| 8832 * @memberOf _ | |
| 8833 * @category Function | |
| 8834 * @param {Function} func The function to cap arguments for. | |
| 8835 * @param {number} [n=func.length] The arity cap. | |
| 8836 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 8837 * @returns {Function} Returns the new function. | |
| 8838 * @example | |
| 8839 * | |
| 8840 * _.map(['6', '8', '10'], _.ary(parseInt, 1)); | |
| 8841 * // => [6, 8, 10] | |
| 8842 */ | |
| 8843 function ary(func, n, guard) { | |
| 8844 if (guard && isIterateeCall(func, n, guard)) { | |
| 8845 n = null; | |
| 8846 } | |
| 8847 n = (func && n == null) ? func.length : nativeMax(+n || 0, 0); | |
| 8848 return createWrapper(func, ARY_FLAG, null, null, null, null, n); | |
| 8849 } | |
| 8850 | |
| 8851 /** | |
| 8852 * Creates a function that invokes `func`, with the `this` binding and arguments | |
| 8853 * of the created function, while it is called less than `n` times. Subsequent | |
| 8854 * calls to the created function return the result of the last `func` invocation. | |
| 8855 * | |
| 8856 * @static | |
| 8857 * @memberOf _ | |
| 8858 * @category Function | |
| 8859 * @param {number} n The number of calls at which `func` is no longer invoked. | |
| 8860 * @param {Function} func The function to restrict. | |
| 8861 * @returns {Function} Returns the new restricted function. | |
| 8862 * @example | |
| 8863 * | |
| 8864 * jQuery('#add').on('click', _.before(5, addContactToList)); | |
| 8865 * // => allows adding up to 4 contacts to the list | |
| 8866 */ | |
| 8867 function before(n, func) { | |
| 8868 var result; | |
| 8869 if (typeof func != 'function') { | |
| 8870 if (typeof n == 'function') { | |
| 8871 var temp = n; | |
| 8872 n = func; | |
| 8873 func = temp; | |
| 8874 } else { | |
| 8875 throw new TypeError(FUNC_ERROR_TEXT); | |
| 8876 } | |
| 8877 } | |
| 8878 return function() { | |
| 8879 if (--n > 0) { | |
| 8880 result = func.apply(this, arguments); | |
| 8881 } | |
| 8882 if (n <= 1) { | |
| 8883 func = null; | |
| 8884 } | |
| 8885 return result; | |
| 8886 }; | |
| 8887 } | |
| 8888 | |
| 8889 /** | |
| 8890 * Creates a function that invokes `func` with the `this` binding of `thisArg` | |
| 8891 * and prepends any additional `_.bind` arguments to those provided to the | |
| 8892 * bound function. | |
| 8893 * | |
| 8894 * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, | |
| 8895 * may be used as a placeholder for partially applied arguments. | |
| 8896 * | |
| 8897 * **Note:** Unlike native `Function#bind` this method does not set the "length" | |
| 8898 * property of bound functions. | |
| 8899 * | |
| 8900 * @static | |
| 8901 * @memberOf _ | |
| 8902 * @category Function | |
| 8903 * @param {Function} func The function to bind. | |
| 8904 * @param {*} thisArg The `this` binding of `func`. | |
| 8905 * @param {...*} [partials] The arguments to be partially applied. | |
| 8906 * @returns {Function} Returns the new bound function. | |
| 8907 * @example | |
| 8908 * | |
| 8909 * var greet = function(greeting, punctuation) { | |
| 8910 * return greeting + ' ' + this.user + punctuation; | |
| 8911 * }; | |
| 8912 * | |
| 8913 * var object = { 'user': 'fred' }; | |
| 8914 * | |
| 8915 * var bound = _.bind(greet, object, 'hi'); | |
| 8916 * bound('!'); | |
| 8917 * // => 'hi fred!' | |
| 8918 * | |
| 8919 * // using placeholders | |
| 8920 * var bound = _.bind(greet, object, _, '!'); | |
| 8921 * bound('hi'); | |
| 8922 * // => 'hi fred!' | |
| 8923 */ | |
| 8924 var bind = restParam(function(func, thisArg, partials) { | |
| 8925 var bitmask = BIND_FLAG; | |
| 8926 if (partials.length) { | |
| 8927 var holders = replaceHolders(partials, bind.placeholder); | |
| 8928 bitmask |= PARTIAL_FLAG; | |
| 8929 } | |
| 8930 return createWrapper(func, bitmask, thisArg, partials, holders); | |
| 8931 }); | |
| 8932 | |
| 8933 /** | |
| 8934 * Binds methods of an object to the object itself, overwriting the existing | |
| 8935 * method. Method names may be specified as individual arguments or as arrays | |
| 8936 * of method names. If no method names are provided all enumerable function | |
| 8937 * properties, own and inherited, of `object` are bound. | |
| 8938 * | |
| 8939 * **Note:** This method does not set the "length" property of bound functions. | |
| 8940 * | |
| 8941 * @static | |
| 8942 * @memberOf _ | |
| 8943 * @category Function | |
| 8944 * @param {Object} object The object to bind and assign the bound methods to. | |
| 8945 * @param {...(string|string[])} [methodNames] The object method names to bind, | |
| 8946 * specified as individual method names or arrays of method names. | |
| 8947 * @returns {Object} Returns `object`. | |
| 8948 * @example | |
| 8949 * | |
| 8950 * var view = { | |
| 8951 * 'label': 'docs', | |
| 8952 * 'onClick': function() { | |
| 8953 * console.log('clicked ' + this.label); | |
| 8954 * } | |
| 8955 * }; | |
| 8956 * | |
| 8957 * _.bindAll(view); | |
| 8958 * jQuery('#docs').on('click', view.onClick); | |
| 8959 * // => logs 'clicked docs' when the element is clicked | |
| 8960 */ | |
| 8961 var bindAll = restParam(function(object, methodNames) { | |
| 8962 methodNames = methodNames.length ? baseFlatten(methodNames) : functions(object); | |
| 8963 | |
| 8964 var index = -1, | |
| 8965 length = methodNames.length; | |
| 8966 | |
| 8967 while (++index < length) { | |
| 8968 var key = methodNames[index]; | |
| 8969 object[key] = createWrapper(object[key], BIND_FLAG, object); | |
| 8970 } | |
| 8971 return object; | |
| 8972 }); | |
| 8973 | |
| 8974 /** | |
| 8975 * Creates a function that invokes the method at `object[key]` and prepends | |
| 8976 * any additional `_.bindKey` arguments to those provided to the bound function. | |
| 8977 * | |
| 8978 * This method differs from `_.bind` by allowing bound functions to reference | |
| 8979 * methods that may be redefined or don't yet exist. | |
| 8980 * See [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern) | |
| 8981 * for more details. | |
| 8982 * | |
| 8983 * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic | |
| 8984 * builds, may be used as a placeholder for partially applied arguments. | |
| 8985 * | |
| 8986 * @static | |
| 8987 * @memberOf _ | |
| 8988 * @category Function | |
| 8989 * @param {Object} object The object the method belongs to. | |
| 8990 * @param {string} key The key of the method. | |
| 8991 * @param {...*} [partials] The arguments to be partially applied. | |
| 8992 * @returns {Function} Returns the new bound function. | |
| 8993 * @example | |
| 8994 * | |
| 8995 * var object = { | |
| 8996 * 'user': 'fred', | |
| 8997 * 'greet': function(greeting, punctuation) { | |
| 8998 * return greeting + ' ' + this.user + punctuation; | |
| 8999 * } | |
| 9000 * }; | |
| 9001 * | |
| 9002 * var bound = _.bindKey(object, 'greet', 'hi'); | |
| 9003 * bound('!'); | |
| 9004 * // => 'hi fred!' | |
| 9005 * | |
| 9006 * object.greet = function(greeting, punctuation) { | |
| 9007 * return greeting + 'ya ' + this.user + punctuation; | |
| 9008 * }; | |
| 9009 * | |
| 9010 * bound('!'); | |
| 9011 * // => 'hiya fred!' | |
| 9012 * | |
| 9013 * // using placeholders | |
| 9014 * var bound = _.bindKey(object, 'greet', _, '!'); | |
| 9015 * bound('hi'); | |
| 9016 * // => 'hiya fred!' | |
| 9017 */ | |
| 9018 var bindKey = restParam(function(object, key, partials) { | |
| 9019 var bitmask = BIND_FLAG | BIND_KEY_FLAG; | |
| 9020 if (partials.length) { | |
| 9021 var holders = replaceHolders(partials, bindKey.placeholder); | |
| 9022 bitmask |= PARTIAL_FLAG; | |
| 9023 } | |
| 9024 return createWrapper(key, bitmask, object, partials, holders); | |
| 9025 }); | |
| 9026 | |
| 9027 /** | |
| 9028 * Creates a function that accepts one or more arguments of `func` that when | |
| 9029 * called either invokes `func` returning its result, if all `func` arguments | |
| 9030 * have been provided, or returns a function that accepts one or more of the | |
| 9031 * remaining `func` arguments, and so on. The arity of `func` may be specified | |
| 9032 * if `func.length` is not sufficient. | |
| 9033 * | |
| 9034 * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds, | |
| 9035 * may be used as a placeholder for provided arguments. | |
| 9036 * | |
| 9037 * **Note:** This method does not set the "length" property of curried functions. | |
| 9038 * | |
| 9039 * @static | |
| 9040 * @memberOf _ | |
| 9041 * @category Function | |
| 9042 * @param {Function} func The function to curry. | |
| 9043 * @param {number} [arity=func.length] The arity of `func`. | |
| 9044 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 9045 * @returns {Function} Returns the new curried function. | |
| 9046 * @example | |
| 9047 * | |
| 9048 * var abc = function(a, b, c) { | |
| 9049 * return [a, b, c]; | |
| 9050 * }; | |
| 9051 * | |
| 9052 * var curried = _.curry(abc); | |
| 9053 * | |
| 9054 * curried(1)(2)(3); | |
| 9055 * // => [1, 2, 3] | |
| 9056 * | |
| 9057 * curried(1, 2)(3); | |
| 9058 * // => [1, 2, 3] | |
| 9059 * | |
| 9060 * curried(1, 2, 3); | |
| 9061 * // => [1, 2, 3] | |
| 9062 * | |
| 9063 * // using placeholders | |
| 9064 * curried(1)(_, 3)(2); | |
| 9065 * // => [1, 2, 3] | |
| 9066 */ | |
| 9067 var curry = createCurry(CURRY_FLAG); | |
| 9068 | |
| 9069 /** | |
| 9070 * This method is like `_.curry` except that arguments are applied to `func` | |
| 9071 * in the manner of `_.partialRight` instead of `_.partial`. | |
| 9072 * | |
| 9073 * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic | |
| 9074 * builds, may be used as a placeholder for provided arguments. | |
| 9075 * | |
| 9076 * **Note:** This method does not set the "length" property of curried functions. | |
| 9077 * | |
| 9078 * @static | |
| 9079 * @memberOf _ | |
| 9080 * @category Function | |
| 9081 * @param {Function} func The function to curry. | |
| 9082 * @param {number} [arity=func.length] The arity of `func`. | |
| 9083 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 9084 * @returns {Function} Returns the new curried function. | |
| 9085 * @example | |
| 9086 * | |
| 9087 * var abc = function(a, b, c) { | |
| 9088 * return [a, b, c]; | |
| 9089 * }; | |
| 9090 * | |
| 9091 * var curried = _.curryRight(abc); | |
| 9092 * | |
| 9093 * curried(3)(2)(1); | |
| 9094 * // => [1, 2, 3] | |
| 9095 * | |
| 9096 * curried(2, 3)(1); | |
| 9097 * // => [1, 2, 3] | |
| 9098 * | |
| 9099 * curried(1, 2, 3); | |
| 9100 * // => [1, 2, 3] | |
| 9101 * | |
| 9102 * // using placeholders | |
| 9103 * curried(3)(1, _)(2); | |
| 9104 * // => [1, 2, 3] | |
| 9105 */ | |
| 9106 var curryRight = createCurry(CURRY_RIGHT_FLAG); | |
| 9107 | |
| 9108 /** | |
| 9109 * Creates a function that delays invoking `func` until after `wait` milliseconds | |
| 9110 * have elapsed since the last time it was invoked. The created function comes | |
| 9111 * with a `cancel` method to cancel delayed invocations. Provide an options | |
| 9112 * object to indicate that `func` should be invoked on the leading and/or | |
| 9113 * trailing edge of the `wait` timeout. Subsequent calls to the debounced | |
| 9114 * function return the result of the last `func` invocation. | |
| 9115 * | |
| 9116 * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked | |
| 9117 * on the trailing edge of the timeout only if the the debounced function is | |
| 9118 * invoked more than once during the `wait` timeout. | |
| 9119 * | |
| 9120 * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation) | |
| 9121 * for details over the differences between `_.debounce` and `_.throttle`. | |
| 9122 * | |
| 9123 * @static | |
| 9124 * @memberOf _ | |
| 9125 * @category Function | |
| 9126 * @param {Function} func The function to debounce. | |
| 9127 * @param {number} [wait=0] The number of milliseconds to delay. | |
| 9128 * @param {Object} [options] The options object. | |
| 9129 * @param {boolean} [options.leading=false] Specify invoking on the leading | |
| 9130 * edge of the timeout. | |
| 9131 * @param {number} [options.maxWait] The maximum time `func` is allowed to be | |
| 9132 * delayed before it is invoked. | |
| 9133 * @param {boolean} [options.trailing=true] Specify invoking on the trailing | |
| 9134 * edge of the timeout. | |
| 9135 * @returns {Function} Returns the new debounced function. | |
| 9136 * @example | |
| 9137 * | |
| 9138 * // avoid costly calculations while the window size is in flux | |
| 9139 * jQuery(window).on('resize', _.debounce(calculateLayout, 150)); | |
| 9140 * | |
| 9141 * // invoke `sendMail` when the click event is fired, debouncing subsequent calls | |
| 9142 * jQuery('#postbox').on('click', _.debounce(sendMail, 300, { | |
| 9143 * 'leading': true, | |
| 9144 * 'trailing': false | |
| 9145 * })); | |
| 9146 * | |
| 9147 * // ensure `batchLog` is invoked once after 1 second of debounced calls | |
| 9148 * var source = new EventSource('/stream'); | |
| 9149 * jQuery(source).on('message', _.debounce(batchLog, 250, { | |
| 9150 * 'maxWait': 1000 | |
| 9151 * })); | |
| 9152 * | |
| 9153 * // cancel a debounced call | |
| 9154 * var todoChanges = _.debounce(batchLog, 1000); | |
| 9155 * Object.observe(models.todo, todoChanges); | |
| 9156 * | |
| 9157 * Object.observe(models, function(changes) { | |
| 9158 * if (_.find(changes, { 'user': 'todo', 'type': 'delete'})) { | |
| 9159 * todoChanges.cancel(); | |
| 9160 * } | |
| 9161 * }, ['delete']); | |
| 9162 * | |
| 9163 * // ...at some point `models.todo` is changed | |
| 9164 * models.todo.completed = true; | |
| 9165 * | |
| 9166 * // ...before 1 second has passed `models.todo` is deleted | |
| 9167 * // which cancels the debounced `todoChanges` call | |
| 9168 * delete models.todo; | |
| 9169 */ | |
| 9170 function debounce(func, wait, options) { | |
| 9171 var args, | |
| 9172 maxTimeoutId, | |
| 9173 result, | |
| 9174 stamp, | |
| 9175 thisArg, | |
| 9176 timeoutId, | |
| 9177 trailingCall, | |
| 9178 lastCalled = 0, | |
| 9179 maxWait = false, | |
| 9180 trailing = true; | |
| 9181 | |
| 9182 if (typeof func != 'function') { | |
| 9183 throw new TypeError(FUNC_ERROR_TEXT); | |
| 9184 } | |
| 9185 wait = wait < 0 ? 0 : (+wait || 0); | |
| 9186 if (options === true) { | |
| 9187 var leading = true; | |
| 9188 trailing = false; | |
| 9189 } else if (isObject(options)) { | |
| 9190 leading = options.leading; | |
| 9191 maxWait = 'maxWait' in options && nativeMax(+options.maxWait || 0, wait); | |
| 9192 trailing = 'trailing' in options ? options.trailing : trailing; | |
| 9193 } | |
| 9194 | |
| 9195 function cancel() { | |
| 9196 if (timeoutId) { | |
| 9197 clearTimeout(timeoutId); | |
| 9198 } | |
| 9199 if (maxTimeoutId) { | |
| 9200 clearTimeout(maxTimeoutId); | |
| 9201 } | |
| 9202 maxTimeoutId = timeoutId = trailingCall = undefined; | |
| 9203 } | |
| 9204 | |
| 9205 function delayed() { | |
| 9206 var remaining = wait - (now() - stamp); | |
| 9207 if (remaining <= 0 || remaining > wait) { | |
| 9208 if (maxTimeoutId) { | |
| 9209 clearTimeout(maxTimeoutId); | |
| 9210 } | |
| 9211 var isCalled = trailingCall; | |
| 9212 maxTimeoutId = timeoutId = trailingCall = undefined; | |
| 9213 if (isCalled) { | |
| 9214 lastCalled = now(); | |
| 9215 result = func.apply(thisArg, args); | |
| 9216 if (!timeoutId && !maxTimeoutId) { | |
| 9217 args = thisArg = null; | |
| 9218 } | |
| 9219 } | |
| 9220 } else { | |
| 9221 timeoutId = setTimeout(delayed, remaining); | |
| 9222 } | |
| 9223 } | |
| 9224 | |
| 9225 function maxDelayed() { | |
| 9226 if (timeoutId) { | |
| 9227 clearTimeout(timeoutId); | |
| 9228 } | |
| 9229 maxTimeoutId = timeoutId = trailingCall = undefined; | |
| 9230 if (trailing || (maxWait !== wait)) { | |
| 9231 lastCalled = now(); | |
| 9232 result = func.apply(thisArg, args); | |
| 9233 if (!timeoutId && !maxTimeoutId) { | |
| 9234 args = thisArg = null; | |
| 9235 } | |
| 9236 } | |
| 9237 } | |
| 9238 | |
| 9239 function debounced() { | |
| 9240 args = arguments; | |
| 9241 stamp = now(); | |
| 9242 thisArg = this; | |
| 9243 trailingCall = trailing && (timeoutId || !leading); | |
| 9244 | |
| 9245 if (maxWait === false) { | |
| 9246 var leadingCall = leading && !timeoutId; | |
| 9247 } else { | |
| 9248 if (!maxTimeoutId && !leading) { | |
| 9249 lastCalled = stamp; | |
| 9250 } | |
| 9251 var remaining = maxWait - (stamp - lastCalled), | |
| 9252 isCalled = remaining <= 0 || remaining > maxWait; | |
| 9253 | |
| 9254 if (isCalled) { | |
| 9255 if (maxTimeoutId) { | |
| 9256 maxTimeoutId = clearTimeout(maxTimeoutId); | |
| 9257 } | |
| 9258 lastCalled = stamp; | |
| 9259 result = func.apply(thisArg, args); | |
| 9260 } | |
| 9261 else if (!maxTimeoutId) { | |
| 9262 maxTimeoutId = setTimeout(maxDelayed, remaining); | |
| 9263 } | |
| 9264 } | |
| 9265 if (isCalled && timeoutId) { | |
| 9266 timeoutId = clearTimeout(timeoutId); | |
| 9267 } | |
| 9268 else if (!timeoutId && wait !== maxWait) { | |
| 9269 timeoutId = setTimeout(delayed, wait); | |
| 9270 } | |
| 9271 if (leadingCall) { | |
| 9272 isCalled = true; | |
| 9273 result = func.apply(thisArg, args); | |
| 9274 } | |
| 9275 if (isCalled && !timeoutId && !maxTimeoutId) { | |
| 9276 args = thisArg = null; | |
| 9277 } | |
| 9278 return result; | |
| 9279 } | |
| 9280 debounced.cancel = cancel; | |
| 9281 return debounced; | |
| 9282 } | |
| 9283 | |
| 9284 /** | |
| 9285 * Defers invoking the `func` until the current call stack has cleared. Any | |
| 9286 * additional arguments are provided to `func` when it is invoked. | |
| 9287 * | |
| 9288 * @static | |
| 9289 * @memberOf _ | |
| 9290 * @category Function | |
| 9291 * @param {Function} func The function to defer. | |
| 9292 * @param {...*} [args] The arguments to invoke the function with. | |
| 9293 * @returns {number} Returns the timer id. | |
| 9294 * @example | |
| 9295 * | |
| 9296 * _.defer(function(text) { | |
| 9297 * console.log(text); | |
| 9298 * }, 'deferred'); | |
| 9299 * // logs 'deferred' after one or more milliseconds | |
| 9300 */ | |
| 9301 var defer = restParam(function(func, args) { | |
| 9302 return baseDelay(func, 1, args); | |
| 9303 }); | |
| 9304 | |
| 9305 /** | |
| 9306 * Invokes `func` after `wait` milliseconds. Any additional arguments are | |
| 9307 * provided to `func` when it is invoked. | |
| 9308 * | |
| 9309 * @static | |
| 9310 * @memberOf _ | |
| 9311 * @category Function | |
| 9312 * @param {Function} func The function to delay. | |
| 9313 * @param {number} wait The number of milliseconds to delay invocation. | |
| 9314 * @param {...*} [args] The arguments to invoke the function with. | |
| 9315 * @returns {number} Returns the timer id. | |
| 9316 * @example | |
| 9317 * | |
| 9318 * _.delay(function(text) { | |
| 9319 * console.log(text); | |
| 9320 * }, 1000, 'later'); | |
| 9321 * // => logs 'later' after one second | |
| 9322 */ | |
| 9323 var delay = restParam(function(func, wait, args) { | |
| 9324 return baseDelay(func, wait, args); | |
| 9325 }); | |
| 9326 | |
| 9327 /** | |
| 9328 * Creates a function that returns the result of invoking the provided | |
| 9329 * functions with the `this` binding of the created function, where each | |
| 9330 * successive invocation is supplied the return value of the previous. | |
| 9331 * | |
| 9332 * @static | |
| 9333 * @memberOf _ | |
| 9334 * @category Function | |
| 9335 * @param {...Function} [funcs] Functions to invoke. | |
| 9336 * @returns {Function} Returns the new function. | |
| 9337 * @example | |
| 9338 * | |
| 9339 * function square(n) { | |
| 9340 * return n * n; | |
| 9341 * } | |
| 9342 * | |
| 9343 * var addSquare = _.flow(_.add, square); | |
| 9344 * addSquare(1, 2); | |
| 9345 * // => 9 | |
| 9346 */ | |
| 9347 var flow = createFlow(); | |
| 9348 | |
| 9349 /** | |
| 9350 * This method is like `_.flow` except that it creates a function that | |
| 9351 * invokes the provided functions from right to left. | |
| 9352 * | |
| 9353 * @static | |
| 9354 * @memberOf _ | |
| 9355 * @alias backflow, compose | |
| 9356 * @category Function | |
| 9357 * @param {...Function} [funcs] Functions to invoke. | |
| 9358 * @returns {Function} Returns the new function. | |
| 9359 * @example | |
| 9360 * | |
| 9361 * function square(n) { | |
| 9362 * return n * n; | |
| 9363 * } | |
| 9364 * | |
| 9365 * var addSquare = _.flowRight(square, _.add); | |
| 9366 * addSquare(1, 2); | |
| 9367 * // => 9 | |
| 9368 */ | |
| 9369 var flowRight = createFlow(true); | |
| 9370 | |
| 9371 /** | |
| 9372 * Creates a function that memoizes the result of `func`. If `resolver` is | |
| 9373 * provided it determines the cache key for storing the result based on the | |
| 9374 * arguments provided to the memoized function. By default, the first argument | |
| 9375 * provided to the memoized function is coerced to a string and used as the | |
| 9376 * cache key. The `func` is invoked with the `this` binding of the memoized | |
| 9377 * function. | |
| 9378 * | |
| 9379 * **Note:** The cache is exposed as the `cache` property on the memoized | |
| 9380 * function. Its creation may be customized by replacing the `_.memoize.Cache` | |
| 9381 * constructor with one whose instances implement the [`Map`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-properties-of-the-map-prototype-object) | |
| 9382 * method interface of `get`, `has`, and `set`. | |
| 9383 * | |
| 9384 * @static | |
| 9385 * @memberOf _ | |
| 9386 * @category Function | |
| 9387 * @param {Function} func The function to have its output memoized. | |
| 9388 * @param {Function} [resolver] The function to resolve the cache key. | |
| 9389 * @returns {Function} Returns the new memoizing function. | |
| 9390 * @example | |
| 9391 * | |
| 9392 * var upperCase = _.memoize(function(string) { | |
| 9393 * return string.toUpperCase(); | |
| 9394 * }); | |
| 9395 * | |
| 9396 * upperCase('fred'); | |
| 9397 * // => 'FRED' | |
| 9398 * | |
| 9399 * // modifying the result cache | |
| 9400 * upperCase.cache.set('fred', 'BARNEY'); | |
| 9401 * upperCase('fred'); | |
| 9402 * // => 'BARNEY' | |
| 9403 * | |
| 9404 * // replacing `_.memoize.Cache` | |
| 9405 * var object = { 'user': 'fred' }; | |
| 9406 * var other = { 'user': 'barney' }; | |
| 9407 * var identity = _.memoize(_.identity); | |
| 9408 * | |
| 9409 * identity(object); | |
| 9410 * // => { 'user': 'fred' } | |
| 9411 * identity(other); | |
| 9412 * // => { 'user': 'fred' } | |
| 9413 * | |
| 9414 * _.memoize.Cache = WeakMap; | |
| 9415 * var identity = _.memoize(_.identity); | |
| 9416 * | |
| 9417 * identity(object); | |
| 9418 * // => { 'user': 'fred' } | |
| 9419 * identity(other); | |
| 9420 * // => { 'user': 'barney' } | |
| 9421 */ | |
| 9422 function memoize(func, resolver) { | |
| 9423 if (typeof func != 'function' || (resolver && typeof resolver != 'function')) { | |
| 9424 throw new TypeError(FUNC_ERROR_TEXT); | |
| 9425 } | |
| 9426 var memoized = function() { | |
| 9427 var args = arguments, | |
| 9428 cache = memoized.cache, | |
| 9429 key = resolver ? resolver.apply(this, args) : args[0]; | |
| 9430 | |
| 9431 if (cache.has(key)) { | |
| 9432 return cache.get(key); | |
| 9433 } | |
| 9434 var result = func.apply(this, args); | |
| 9435 cache.set(key, result); | |
| 9436 return result; | |
| 9437 }; | |
| 9438 memoized.cache = new memoize.Cache; | |
| 9439 return memoized; | |
| 9440 } | |
| 9441 | |
| 9442 /** | |
| 9443 * Creates a function that negates the result of the predicate `func`. The | |
| 9444 * `func` predicate is invoked with the `this` binding and arguments of the | |
| 9445 * created function. | |
| 9446 * | |
| 9447 * @static | |
| 9448 * @memberOf _ | |
| 9449 * @category Function | |
| 9450 * @param {Function} predicate The predicate to negate. | |
| 9451 * @returns {Function} Returns the new function. | |
| 9452 * @example | |
| 9453 * | |
| 9454 * function isEven(n) { | |
| 9455 * return n % 2 == 0; | |
| 9456 * } | |
| 9457 * | |
| 9458 * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)); | |
| 9459 * // => [1, 3, 5] | |
| 9460 */ | |
| 9461 function negate(predicate) { | |
| 9462 if (typeof predicate != 'function') { | |
| 9463 throw new TypeError(FUNC_ERROR_TEXT); | |
| 9464 } | |
| 9465 return function() { | |
| 9466 return !predicate.apply(this, arguments); | |
| 9467 }; | |
| 9468 } | |
| 9469 | |
| 9470 /** | |
| 9471 * Creates a function that is restricted to invoking `func` once. Repeat calls | |
| 9472 * to the function return the value of the first call. The `func` is invoked | |
| 9473 * with the `this` binding and arguments of the created function. | |
| 9474 * | |
| 9475 * @static | |
| 9476 * @memberOf _ | |
| 9477 * @category Function | |
| 9478 * @param {Function} func The function to restrict. | |
| 9479 * @returns {Function} Returns the new restricted function. | |
| 9480 * @example | |
| 9481 * | |
| 9482 * var initialize = _.once(createApplication); | |
| 9483 * initialize(); | |
| 9484 * initialize(); | |
| 9485 * // `initialize` invokes `createApplication` once | |
| 9486 */ | |
| 9487 function once(func) { | |
| 9488 return before(2, func); | |
| 9489 } | |
| 9490 | |
| 9491 /** | |
| 9492 * Creates a function that invokes `func` with `partial` arguments prepended | |
| 9493 * to those provided to the new function. This method is like `_.bind` except | |
| 9494 * it does **not** alter the `this` binding. | |
| 9495 * | |
| 9496 * The `_.partial.placeholder` value, which defaults to `_` in monolithic | |
| 9497 * builds, may be used as a placeholder for partially applied arguments. | |
| 9498 * | |
| 9499 * **Note:** This method does not set the "length" property of partially | |
| 9500 * applied functions. | |
| 9501 * | |
| 9502 * @static | |
| 9503 * @memberOf _ | |
| 9504 * @category Function | |
| 9505 * @param {Function} func The function to partially apply arguments to. | |
| 9506 * @param {...*} [partials] The arguments to be partially applied. | |
| 9507 * @returns {Function} Returns the new partially applied function. | |
| 9508 * @example | |
| 9509 * | |
| 9510 * var greet = function(greeting, name) { | |
| 9511 * return greeting + ' ' + name; | |
| 9512 * }; | |
| 9513 * | |
| 9514 * var sayHelloTo = _.partial(greet, 'hello'); | |
| 9515 * sayHelloTo('fred'); | |
| 9516 * // => 'hello fred' | |
| 9517 * | |
| 9518 * // using placeholders | |
| 9519 * var greetFred = _.partial(greet, _, 'fred'); | |
| 9520 * greetFred('hi'); | |
| 9521 * // => 'hi fred' | |
| 9522 */ | |
| 9523 var partial = createPartial(PARTIAL_FLAG); | |
| 9524 | |
| 9525 /** | |
| 9526 * This method is like `_.partial` except that partially applied arguments | |
| 9527 * are appended to those provided to the new function. | |
| 9528 * | |
| 9529 * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic | |
| 9530 * builds, may be used as a placeholder for partially applied arguments. | |
| 9531 * | |
| 9532 * **Note:** This method does not set the "length" property of partially | |
| 9533 * applied functions. | |
| 9534 * | |
| 9535 * @static | |
| 9536 * @memberOf _ | |
| 9537 * @category Function | |
| 9538 * @param {Function} func The function to partially apply arguments to. | |
| 9539 * @param {...*} [partials] The arguments to be partially applied. | |
| 9540 * @returns {Function} Returns the new partially applied function. | |
| 9541 * @example | |
| 9542 * | |
| 9543 * var greet = function(greeting, name) { | |
| 9544 * return greeting + ' ' + name; | |
| 9545 * }; | |
| 9546 * | |
| 9547 * var greetFred = _.partialRight(greet, 'fred'); | |
| 9548 * greetFred('hi'); | |
| 9549 * // => 'hi fred' | |
| 9550 * | |
| 9551 * // using placeholders | |
| 9552 * var sayHelloTo = _.partialRight(greet, 'hello', _); | |
| 9553 * sayHelloTo('fred'); | |
| 9554 * // => 'hello fred' | |
| 9555 */ | |
| 9556 var partialRight = createPartial(PARTIAL_RIGHT_FLAG); | |
| 9557 | |
| 9558 /** | |
| 9559 * Creates a function that invokes `func` with arguments arranged according | |
| 9560 * to the specified indexes where the argument value at the first index is | |
| 9561 * provided as the first argument, the argument value at the second index is | |
| 9562 * provided as the second argument, and so on. | |
| 9563 * | |
| 9564 * @static | |
| 9565 * @memberOf _ | |
| 9566 * @category Function | |
| 9567 * @param {Function} func The function to rearrange arguments for. | |
| 9568 * @param {...(number|number[])} indexes The arranged argument indexes, | |
| 9569 * specified as individual indexes or arrays of indexes. | |
| 9570 * @returns {Function} Returns the new function. | |
| 9571 * @example | |
| 9572 * | |
| 9573 * var rearged = _.rearg(function(a, b, c) { | |
| 9574 * return [a, b, c]; | |
| 9575 * }, 2, 0, 1); | |
| 9576 * | |
| 9577 * rearged('b', 'c', 'a') | |
| 9578 * // => ['a', 'b', 'c'] | |
| 9579 * | |
| 9580 * var map = _.rearg(_.map, [1, 0]); | |
| 9581 * map(function(n) { | |
| 9582 * return n * 3; | |
| 9583 * }, [1, 2, 3]); | |
| 9584 * // => [3, 6, 9] | |
| 9585 */ | |
| 9586 var rearg = restParam(function(func, indexes) { | |
| 9587 return createWrapper(func, REARG_FLAG, null, null, null, baseFlatten(indexes)); | |
| 9588 }); | |
| 9589 | |
| 9590 /** | |
| 9591 * Creates a function that invokes `func` with the `this` binding of the | |
| 9592 * created function and arguments from `start` and beyond provided as an array. | |
| 9593 * | |
| 9594 * **Note:** This method is based on the [rest parameter](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters). | |
| 9595 * | |
| 9596 * @static | |
| 9597 * @memberOf _ | |
| 9598 * @category Function | |
| 9599 * @param {Function} func The function to apply a rest parameter to. | |
| 9600 * @param {number} [start=func.length-1] The start position of the rest parameter. | |
| 9601 * @returns {Function} Returns the new function. | |
| 9602 * @example | |
| 9603 * | |
| 9604 * var say = _.restParam(function(what, names) { | |
| 9605 * return what + ' ' + _.initial(names).join(', ') + | |
| 9606 * (_.size(names) > 1 ? ', & ' : '') + _.last(names); | |
| 9607 * }); | |
| 9608 * | |
| 9609 * say('hello', 'fred', 'barney', 'pebbles'); | |
| 9610 * // => 'hello fred, barney, & pebbles' | |
| 9611 */ | |
| 9612 function restParam(func, start) { | |
| 9613 if (typeof func != 'function') { | |
| 9614 throw new TypeError(FUNC_ERROR_TEXT); | |
| 9615 } | |
| 9616 start = nativeMax(start === undefined ? (func.length - 1) : (+start || 0), 0); | |
| 9617 return function() { | |
| 9618 var args = arguments, | |
| 9619 index = -1, | |
| 9620 length = nativeMax(args.length - start, 0), | |
| 9621 rest = Array(length); | |
| 9622 | |
| 9623 while (++index < length) { | |
| 9624 rest[index] = args[start + index]; | |
| 9625 } | |
| 9626 switch (start) { | |
| 9627 case 0: return func.call(this, rest); | |
| 9628 case 1: return func.call(this, args[0], rest); | |
| 9629 case 2: return func.call(this, args[0], args[1], rest); | |
| 9630 } | |
| 9631 var otherArgs = Array(start + 1); | |
| 9632 index = -1; | |
| 9633 while (++index < start) { | |
| 9634 otherArgs[index] = args[index]; | |
| 9635 } | |
| 9636 otherArgs[start] = rest; | |
| 9637 return func.apply(this, otherArgs); | |
| 9638 }; | |
| 9639 } | |
| 9640 | |
| 9641 /** | |
| 9642 * Creates a function that invokes `func` with the `this` binding of the created | |
| 9643 * function and an array of arguments much like [`Function#apply`](https://es5.github.io/#x15.3.4.3). | |
| 9644 * | |
| 9645 * **Note:** This method is based on the [spread operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator). | |
| 9646 * | |
| 9647 * @static | |
| 9648 * @memberOf _ | |
| 9649 * @category Function | |
| 9650 * @param {Function} func The function to spread arguments over. | |
| 9651 * @returns {Function} Returns the new function. | |
| 9652 * @example | |
| 9653 * | |
| 9654 * var say = _.spread(function(who, what) { | |
| 9655 * return who + ' says ' + what; | |
| 9656 * }); | |
| 9657 * | |
| 9658 * say(['fred', 'hello']); | |
| 9659 * // => 'fred says hello' | |
| 9660 * | |
| 9661 * // with a Promise | |
| 9662 * var numbers = Promise.all([ | |
| 9663 * Promise.resolve(40), | |
| 9664 * Promise.resolve(36) | |
| 9665 * ]); | |
| 9666 * | |
| 9667 * numbers.then(_.spread(function(x, y) { | |
| 9668 * return x + y; | |
| 9669 * })); | |
| 9670 * // => a Promise of 76 | |
| 9671 */ | |
| 9672 function spread(func) { | |
| 9673 if (typeof func != 'function') { | |
| 9674 throw new TypeError(FUNC_ERROR_TEXT); | |
| 9675 } | |
| 9676 return function(array) { | |
| 9677 return func.apply(this, array); | |
| 9678 }; | |
| 9679 } | |
| 9680 | |
| 9681 /** | |
| 9682 * Creates a function that only invokes `func` at most once per every `wait` | |
| 9683 * milliseconds. The created function comes with a `cancel` method to cancel | |
| 9684 * delayed invocations. Provide an options object to indicate that `func` | |
| 9685 * should be invoked on the leading and/or trailing edge of the `wait` timeout. | |
| 9686 * Subsequent calls to the throttled function return the result of the last | |
| 9687 * `func` call. | |
| 9688 * | |
| 9689 * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked | |
| 9690 * on the trailing edge of the timeout only if the the throttled function is | |
| 9691 * invoked more than once during the `wait` timeout. | |
| 9692 * | |
| 9693 * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation) | |
| 9694 * for details over the differences between `_.throttle` and `_.debounce`. | |
| 9695 * | |
| 9696 * @static | |
| 9697 * @memberOf _ | |
| 9698 * @category Function | |
| 9699 * @param {Function} func The function to throttle. | |
| 9700 * @param {number} [wait=0] The number of milliseconds to throttle invocations to. | |
| 9701 * @param {Object} [options] The options object. | |
| 9702 * @param {boolean} [options.leading=true] Specify invoking on the leading | |
| 9703 * edge of the timeout. | |
| 9704 * @param {boolean} [options.trailing=true] Specify invoking on the trailing | |
| 9705 * edge of the timeout. | |
| 9706 * @returns {Function} Returns the new throttled function. | |
| 9707 * @example | |
| 9708 * | |
| 9709 * // avoid excessively updating the position while scrolling | |
| 9710 * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); | |
| 9711 * | |
| 9712 * // invoke `renewToken` when the click event is fired, but not more than once every 5 minutes | |
| 9713 * jQuery('.interactive').on('click', _.throttle(renewToken, 300000, { | |
| 9714 * 'trailing': false | |
| 9715 * })); | |
| 9716 * | |
| 9717 * // cancel a trailing throttled call | |
| 9718 * jQuery(window).on('popstate', throttled.cancel); | |
| 9719 */ | |
| 9720 function throttle(func, wait, options) { | |
| 9721 var leading = true, | |
| 9722 trailing = true; | |
| 9723 | |
| 9724 if (typeof func != 'function') { | |
| 9725 throw new TypeError(FUNC_ERROR_TEXT); | |
| 9726 } | |
| 9727 if (options === false) { | |
| 9728 leading = false; | |
| 9729 } else if (isObject(options)) { | |
| 9730 leading = 'leading' in options ? !!options.leading : leading; | |
| 9731 trailing = 'trailing' in options ? !!options.trailing : trailing; | |
| 9732 } | |
| 9733 debounceOptions.leading = leading; | |
| 9734 debounceOptions.maxWait = +wait; | |
| 9735 debounceOptions.trailing = trailing; | |
| 9736 return debounce(func, wait, debounceOptions); | |
| 9737 } | |
| 9738 | |
| 9739 /** | |
| 9740 * Creates a function that provides `value` to the wrapper function as its | |
| 9741 * first argument. Any additional arguments provided to the function are | |
| 9742 * appended to those provided to the wrapper function. The wrapper is invoked | |
| 9743 * with the `this` binding of the created function. | |
| 9744 * | |
| 9745 * @static | |
| 9746 * @memberOf _ | |
| 9747 * @category Function | |
| 9748 * @param {*} value The value to wrap. | |
| 9749 * @param {Function} wrapper The wrapper function. | |
| 9750 * @returns {Function} Returns the new function. | |
| 9751 * @example | |
| 9752 * | |
| 9753 * var p = _.wrap(_.escape, function(func, text) { | |
| 9754 * return '<p>' + func(text) + '</p>'; | |
| 9755 * }); | |
| 9756 * | |
| 9757 * p('fred, barney, & pebbles'); | |
| 9758 * // => '<p>fred, barney, & pebbles</p>' | |
| 9759 */ | |
| 9760 function wrap(value, wrapper) { | |
| 9761 wrapper = wrapper == null ? identity : wrapper; | |
| 9762 return createWrapper(wrapper, PARTIAL_FLAG, null, [value], []); | |
| 9763 } | |
| 9764 | |
| 9765 /*------------------------------------------------------------------------*/ | |
| 9766 | |
| 9767 /** | |
| 9768 * Creates a clone of `value`. If `isDeep` is `true` nested objects are cloned, | |
| 9769 * otherwise they are assigned by reference. If `customizer` is provided it is | |
| 9770 * invoked to produce the cloned values. If `customizer` returns `undefined` | |
| 9771 * cloning is handled by the method instead. The `customizer` is bound to | |
| 9772 * `thisArg` and invoked with two argument; (value [, index|key, object]). | |
| 9773 * | |
| 9774 * **Note:** This method is loosely based on the | |
| 9775 * [structured clone algorithm](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm). | |
| 9776 * The enumerable properties of `arguments` objects and objects created by | |
| 9777 * constructors other than `Object` are cloned to plain `Object` objects. An | |
| 9778 * empty object is returned for uncloneable values such as functions, DOM nodes, | |
| 9779 * Maps, Sets, and WeakMaps. | |
| 9780 * | |
| 9781 * @static | |
| 9782 * @memberOf _ | |
| 9783 * @category Lang | |
| 9784 * @param {*} value The value to clone. | |
| 9785 * @param {boolean} [isDeep] Specify a deep clone. | |
| 9786 * @param {Function} [customizer] The function to customize cloning values. | |
| 9787 * @param {*} [thisArg] The `this` binding of `customizer`. | |
| 9788 * @returns {*} Returns the cloned value. | |
| 9789 * @example | |
| 9790 * | |
| 9791 * var users = [ | |
| 9792 * { 'user': 'barney' }, | |
| 9793 * { 'user': 'fred' } | |
| 9794 * ]; | |
| 9795 * | |
| 9796 * var shallow = _.clone(users); | |
| 9797 * shallow[0] === users[0]; | |
| 9798 * // => true | |
| 9799 * | |
| 9800 * var deep = _.clone(users, true); | |
| 9801 * deep[0] === users[0]; | |
| 9802 * // => false | |
| 9803 * | |
| 9804 * // using a customizer callback | |
| 9805 * var el = _.clone(document.body, function(value) { | |
| 9806 * if (_.isElement(value)) { | |
| 9807 * return value.cloneNode(false); | |
| 9808 * } | |
| 9809 * }); | |
| 9810 * | |
| 9811 * el === document.body | |
| 9812 * // => false | |
| 9813 * el.nodeName | |
| 9814 * // => BODY | |
| 9815 * el.childNodes.length; | |
| 9816 * // => 0 | |
| 9817 */ | |
| 9818 function clone(value, isDeep, customizer, thisArg) { | |
| 9819 if (isDeep && typeof isDeep != 'boolean' && isIterateeCall(value, isDeep, customizer)) { | |
| 9820 isDeep = false; | |
| 9821 } | |
| 9822 else if (typeof isDeep == 'function') { | |
| 9823 thisArg = customizer; | |
| 9824 customizer = isDeep; | |
| 9825 isDeep = false; | |
| 9826 } | |
| 9827 customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1); | |
| 9828 return baseClone(value, isDeep, customizer); | |
| 9829 } | |
| 9830 | |
| 9831 /** | |
| 9832 * Creates a deep clone of `value`. If `customizer` is provided it is invoked | |
| 9833 * to produce the cloned values. If `customizer` returns `undefined` cloning | |
| 9834 * is handled by the method instead. The `customizer` is bound to `thisArg` | |
| 9835 * and invoked with two argument; (value [, index|key, object]). | |
| 9836 * | |
| 9837 * **Note:** This method is loosely based on the | |
| 9838 * [structured clone algorithm](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm). | |
| 9839 * The enumerable properties of `arguments` objects and objects created by | |
| 9840 * constructors other than `Object` are cloned to plain `Object` objects. An | |
| 9841 * empty object is returned for uncloneable values such as functions, DOM nodes, | |
| 9842 * Maps, Sets, and WeakMaps. | |
| 9843 * | |
| 9844 * @static | |
| 9845 * @memberOf _ | |
| 9846 * @category Lang | |
| 9847 * @param {*} value The value to deep clone. | |
| 9848 * @param {Function} [customizer] The function to customize cloning values. | |
| 9849 * @param {*} [thisArg] The `this` binding of `customizer`. | |
| 9850 * @returns {*} Returns the deep cloned value. | |
| 9851 * @example | |
| 9852 * | |
| 9853 * var users = [ | |
| 9854 * { 'user': 'barney' }, | |
| 9855 * { 'user': 'fred' } | |
| 9856 * ]; | |
| 9857 * | |
| 9858 * var deep = _.cloneDeep(users); | |
| 9859 * deep[0] === users[0]; | |
| 9860 * // => false | |
| 9861 * | |
| 9862 * // using a customizer callback | |
| 9863 * var el = _.cloneDeep(document.body, function(value) { | |
| 9864 * if (_.isElement(value)) { | |
| 9865 * return value.cloneNode(true); | |
| 9866 * } | |
| 9867 * }); | |
| 9868 * | |
| 9869 * el === document.body | |
| 9870 * // => false | |
| 9871 * el.nodeName | |
| 9872 * // => BODY | |
| 9873 * el.childNodes.length; | |
| 9874 * // => 20 | |
| 9875 */ | |
| 9876 function cloneDeep(value, customizer, thisArg) { | |
| 9877 customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1); | |
| 9878 return baseClone(value, true, customizer); | |
| 9879 } | |
| 9880 | |
| 9881 /** | |
| 9882 * Checks if `value` is classified as an `arguments` object. | |
| 9883 * | |
| 9884 * @static | |
| 9885 * @memberOf _ | |
| 9886 * @category Lang | |
| 9887 * @param {*} value The value to check. | |
| 9888 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 9889 * @example | |
| 9890 * | |
| 9891 * _.isArguments(function() { return arguments; }()); | |
| 9892 * // => true | |
| 9893 * | |
| 9894 * _.isArguments([1, 2, 3]); | |
| 9895 * // => false | |
| 9896 */ | |
| 9897 function isArguments(value) { | |
| 9898 var length = isObjectLike(value) ? value.length : undefined; | |
| 9899 return isLength(length) && objToString.call(value) == argsTag; | |
| 9900 } | |
| 9901 | |
| 9902 /** | |
| 9903 * Checks if `value` is classified as an `Array` object. | |
| 9904 * | |
| 9905 * @static | |
| 9906 * @memberOf _ | |
| 9907 * @category Lang | |
| 9908 * @param {*} value The value to check. | |
| 9909 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 9910 * @example | |
| 9911 * | |
| 9912 * _.isArray([1, 2, 3]); | |
| 9913 * // => true | |
| 9914 * | |
| 9915 * _.isArray(function() { return arguments; }()); | |
| 9916 * // => false | |
| 9917 */ | |
| 9918 var isArray = nativeIsArray || function(value) { | |
| 9919 return isObjectLike(value) && isLength(value.length) && objToString.call(value) == arrayTag; | |
| 9920 }; | |
| 9921 | |
| 9922 /** | |
| 9923 * Checks if `value` is classified as a boolean primitive or object. | |
| 9924 * | |
| 9925 * @static | |
| 9926 * @memberOf _ | |
| 9927 * @category Lang | |
| 9928 * @param {*} value The value to check. | |
| 9929 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 9930 * @example | |
| 9931 * | |
| 9932 * _.isBoolean(false); | |
| 9933 * // => true | |
| 9934 * | |
| 9935 * _.isBoolean(null); | |
| 9936 * // => false | |
| 9937 */ | |
| 9938 function isBoolean(value) { | |
| 9939 return value === true || value === false || (isObjectLike(value) && objToString.call(value) == boolTag); | |
| 9940 } | |
| 9941 | |
| 9942 /** | |
| 9943 * Checks if `value` is classified as a `Date` object. | |
| 9944 * | |
| 9945 * @static | |
| 9946 * @memberOf _ | |
| 9947 * @category Lang | |
| 9948 * @param {*} value The value to check. | |
| 9949 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 9950 * @example | |
| 9951 * | |
| 9952 * _.isDate(new Date); | |
| 9953 * // => true | |
| 9954 * | |
| 9955 * _.isDate('Mon April 23 2012'); | |
| 9956 * // => false | |
| 9957 */ | |
| 9958 function isDate(value) { | |
| 9959 return isObjectLike(value) && objToString.call(value) == dateTag; | |
| 9960 } | |
| 9961 | |
| 9962 /** | |
| 9963 * Checks if `value` is a DOM element. | |
| 9964 * | |
| 9965 * @static | |
| 9966 * @memberOf _ | |
| 9967 * @category Lang | |
| 9968 * @param {*} value The value to check. | |
| 9969 * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`. | |
| 9970 * @example | |
| 9971 * | |
| 9972 * _.isElement(document.body); | |
| 9973 * // => true | |
| 9974 * | |
| 9975 * _.isElement('<body>'); | |
| 9976 * // => false | |
| 9977 */ | |
| 9978 function isElement(value) { | |
| 9979 return !!value && value.nodeType === 1 && isObjectLike(value) && | |
| 9980 (objToString.call(value).indexOf('Element') > -1); | |
| 9981 } | |
| 9982 // Fallback for environments without DOM support. | |
| 9983 if (!support.dom) { | |
| 9984 isElement = function(value) { | |
| 9985 return !!value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value); | |
| 9986 }; | |
| 9987 } | |
| 9988 | |
| 9989 /** | |
| 9990 * Checks if `value` is empty. A value is considered empty unless it is an | |
| 9991 * `arguments` object, array, string, or jQuery-like collection with a length | |
| 9992 * greater than `0` or an object with own enumerable properties. | |
| 9993 * | |
| 9994 * @static | |
| 9995 * @memberOf _ | |
| 9996 * @category Lang | |
| 9997 * @param {Array|Object|string} value The value to inspect. | |
| 9998 * @returns {boolean} Returns `true` if `value` is empty, else `false`. | |
| 9999 * @example | |
| 10000 * | |
| 10001 * _.isEmpty(null); | |
| 10002 * // => true | |
| 10003 * | |
| 10004 * _.isEmpty(true); | |
| 10005 * // => true | |
| 10006 * | |
| 10007 * _.isEmpty(1); | |
| 10008 * // => true | |
| 10009 * | |
| 10010 * _.isEmpty([1, 2, 3]); | |
| 10011 * // => false | |
| 10012 * | |
| 10013 * _.isEmpty({ 'a': 1 }); | |
| 10014 * // => false | |
| 10015 */ | |
| 10016 function isEmpty(value) { | |
| 10017 if (value == null) { | |
| 10018 return true; | |
| 10019 } | |
| 10020 var length = getLength(value); | |
| 10021 if (isLength(length) && (isArray(value) || isString(value) || isArguments(value) || | |
| 10022 (isObjectLike(value) && isFunction(value.splice)))) { | |
| 10023 return !length; | |
| 10024 } | |
| 10025 return !keys(value).length; | |
| 10026 } | |
| 10027 | |
| 10028 /** | |
| 10029 * Performs a deep comparison between two values to determine if they are | |
| 10030 * equivalent. If `customizer` is provided it is invoked to compare values. | |
| 10031 * If `customizer` returns `undefined` comparisons are handled by the method | |
| 10032 * instead. The `customizer` is bound to `thisArg` and invoked with three | |
| 10033 * arguments: (value, other [, index|key]). | |
| 10034 * | |
| 10035 * **Note:** This method supports comparing arrays, booleans, `Date` objects, | |
| 10036 * numbers, `Object` objects, regexes, and strings. Objects are compared by | |
| 10037 * their own, not inherited, enumerable properties. Functions and DOM nodes | |
| 10038 * are **not** supported. Provide a customizer function to extend support | |
| 10039 * for comparing other values. | |
| 10040 * | |
| 10041 * @static | |
| 10042 * @memberOf _ | |
| 10043 * @category Lang | |
| 10044 * @param {*} value The value to compare. | |
| 10045 * @param {*} other The other value to compare. | |
| 10046 * @param {Function} [customizer] The function to customize value comparisons. | |
| 10047 * @param {*} [thisArg] The `this` binding of `customizer`. | |
| 10048 * @returns {boolean} Returns `true` if the values are equivalent, else `false`. | |
| 10049 * @example | |
| 10050 * | |
| 10051 * var object = { 'user': 'fred' }; | |
| 10052 * var other = { 'user': 'fred' }; | |
| 10053 * | |
| 10054 * object == other; | |
| 10055 * // => false | |
| 10056 * | |
| 10057 * _.isEqual(object, other); | |
| 10058 * // => true | |
| 10059 * | |
| 10060 * // using a customizer callback | |
| 10061 * var array = ['hello', 'goodbye']; | |
| 10062 * var other = ['hi', 'goodbye']; | |
| 10063 * | |
| 10064 * _.isEqual(array, other, function(value, other) { | |
| 10065 * if (_.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/)) { | |
| 10066 * return true; | |
| 10067 * } | |
| 10068 * }); | |
| 10069 * // => true | |
| 10070 */ | |
| 10071 function isEqual(value, other, customizer, thisArg) { | |
| 10072 customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 3); | |
| 10073 if (!customizer && isStrictComparable(value) && isStrictComparable(other)) { | |
| 10074 return value === other; | |
| 10075 } | |
| 10076 var result = customizer ? customizer(value, other) : undefined; | |
| 10077 return result === undefined ? baseIsEqual(value, other, customizer) : !!result; | |
| 10078 } | |
| 10079 | |
| 10080 /** | |
| 10081 * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, | |
| 10082 * `SyntaxError`, `TypeError`, or `URIError` object. | |
| 10083 * | |
| 10084 * @static | |
| 10085 * @memberOf _ | |
| 10086 * @category Lang | |
| 10087 * @param {*} value The value to check. | |
| 10088 * @returns {boolean} Returns `true` if `value` is an error object, else `false`. | |
| 10089 * @example | |
| 10090 * | |
| 10091 * _.isError(new Error); | |
| 10092 * // => true | |
| 10093 * | |
| 10094 * _.isError(Error); | |
| 10095 * // => false | |
| 10096 */ | |
| 10097 function isError(value) { | |
| 10098 return isObjectLike(value) && typeof value.message == 'string' && objToString.call(value) == errorTag; | |
| 10099 } | |
| 10100 | |
| 10101 /** | |
| 10102 * Checks if `value` is a finite primitive number. | |
| 10103 * | |
| 10104 * **Note:** This method is based on [`Number.isFinite`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.isfinite). | |
| 10105 * | |
| 10106 * @static | |
| 10107 * @memberOf _ | |
| 10108 * @category Lang | |
| 10109 * @param {*} value The value to check. | |
| 10110 * @returns {boolean} Returns `true` if `value` is a finite number, else `false`. | |
| 10111 * @example | |
| 10112 * | |
| 10113 * _.isFinite(10); | |
| 10114 * // => true | |
| 10115 * | |
| 10116 * _.isFinite('10'); | |
| 10117 * // => false | |
| 10118 * | |
| 10119 * _.isFinite(true); | |
| 10120 * // => false | |
| 10121 * | |
| 10122 * _.isFinite(Object(10)); | |
| 10123 * // => false | |
| 10124 * | |
| 10125 * _.isFinite(Infinity); | |
| 10126 * // => false | |
| 10127 */ | |
| 10128 var isFinite = nativeNumIsFinite || function(value) { | |
| 10129 return typeof value == 'number' && nativeIsFinite(value); | |
| 10130 }; | |
| 10131 | |
| 10132 /** | |
| 10133 * Checks if `value` is classified as a `Function` object. | |
| 10134 * | |
| 10135 * @static | |
| 10136 * @memberOf _ | |
| 10137 * @category Lang | |
| 10138 * @param {*} value The value to check. | |
| 10139 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 10140 * @example | |
| 10141 * | |
| 10142 * _.isFunction(_); | |
| 10143 * // => true | |
| 10144 * | |
| 10145 * _.isFunction(/abc/); | |
| 10146 * // => false | |
| 10147 */ | |
| 10148 var isFunction = !(baseIsFunction(/x/) || (Uint8Array && !baseIsFunction(Uint8Array))) ? baseIsFunction : function(value) { | |
| 10149 // The use of `Object#toString` avoids issues with the `typeof` operator | |
| 10150 // in older versions of Chrome and Safari which return 'function' for regexes | |
| 10151 // and Safari 8 equivalents which return 'object' for typed array constructors. | |
| 10152 return objToString.call(value) == funcTag; | |
| 10153 }; | |
| 10154 | |
| 10155 /** | |
| 10156 * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`. | |
| 10157 * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) | |
| 10158 * | |
| 10159 * @static | |
| 10160 * @memberOf _ | |
| 10161 * @category Lang | |
| 10162 * @param {*} value The value to check. | |
| 10163 * @returns {boolean} Returns `true` if `value` is an object, else `false`. | |
| 10164 * @example | |
| 10165 * | |
| 10166 * _.isObject({}); | |
| 10167 * // => true | |
| 10168 * | |
| 10169 * _.isObject([1, 2, 3]); | |
| 10170 * // => true | |
| 10171 * | |
| 10172 * _.isObject(1); | |
| 10173 * // => false | |
| 10174 */ | |
| 10175 function isObject(value) { | |
| 10176 // Avoid a V8 JIT bug in Chrome 19-20. | |
| 10177 // See https://code.google.com/p/v8/issues/detail?id=2291 for more details. | |
| 10178 var type = typeof value; | |
| 10179 return type == 'function' || (!!value && type == 'object'); | |
| 10180 } | |
| 10181 | |
| 10182 /** | |
| 10183 * Performs a deep comparison between `object` and `source` to determine if | |
| 10184 * `object` contains equivalent property values. If `customizer` is provided | |
| 10185 * it is invoked to compare values. If `customizer` returns `undefined` | |
| 10186 * comparisons are handled by the method instead. The `customizer` is bound | |
| 10187 * to `thisArg` and invoked with three arguments: (value, other, index|key). | |
| 10188 * | |
| 10189 * **Note:** This method supports comparing properties of arrays, booleans, | |
| 10190 * `Date` objects, numbers, `Object` objects, regexes, and strings. Functions | |
| 10191 * and DOM nodes are **not** supported. Provide a customizer function to extend | |
| 10192 * support for comparing other values. | |
| 10193 * | |
| 10194 * @static | |
| 10195 * @memberOf _ | |
| 10196 * @category Lang | |
| 10197 * @param {Object} object The object to inspect. | |
| 10198 * @param {Object} source The object of property values to match. | |
| 10199 * @param {Function} [customizer] The function to customize value comparisons. | |
| 10200 * @param {*} [thisArg] The `this` binding of `customizer`. | |
| 10201 * @returns {boolean} Returns `true` if `object` is a match, else `false`. | |
| 10202 * @example | |
| 10203 * | |
| 10204 * var object = { 'user': 'fred', 'age': 40 }; | |
| 10205 * | |
| 10206 * _.isMatch(object, { 'age': 40 }); | |
| 10207 * // => true | |
| 10208 * | |
| 10209 * _.isMatch(object, { 'age': 36 }); | |
| 10210 * // => false | |
| 10211 * | |
| 10212 * // using a customizer callback | |
| 10213 * var object = { 'greeting': 'hello' }; | |
| 10214 * var source = { 'greeting': 'hi' }; | |
| 10215 * | |
| 10216 * _.isMatch(object, source, function(value, other) { | |
| 10217 * return _.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/) || undefined; | |
| 10218 * }); | |
| 10219 * // => true | |
| 10220 */ | |
| 10221 function isMatch(object, source, customizer, thisArg) { | |
| 10222 var props = keys(source), | |
| 10223 length = props.length; | |
| 10224 | |
| 10225 if (!length) { | |
| 10226 return true; | |
| 10227 } | |
| 10228 if (object == null) { | |
| 10229 return false; | |
| 10230 } | |
| 10231 customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 3); | |
| 10232 object = toObject(object); | |
| 10233 if (!customizer && length == 1) { | |
| 10234 var key = props[0], | |
| 10235 value = source[key]; | |
| 10236 | |
| 10237 if (isStrictComparable(value)) { | |
| 10238 return value === object[key] && (value !== undefined || (key in object)); | |
| 10239 } | |
| 10240 } | |
| 10241 var values = Array(length), | |
| 10242 strictCompareFlags = Array(length); | |
| 10243 | |
| 10244 while (length--) { | |
| 10245 value = values[length] = source[props[length]]; | |
| 10246 strictCompareFlags[length] = isStrictComparable(value); | |
| 10247 } | |
| 10248 return baseIsMatch(object, props, values, strictCompareFlags, customizer); | |
| 10249 } | |
| 10250 | |
| 10251 /** | |
| 10252 * Checks if `value` is `NaN`. | |
| 10253 * | |
| 10254 * **Note:** This method is not the same as [`isNaN`](https://es5.github.io/#x15.1.2.4) | |
| 10255 * which returns `true` for `undefined` and other non-numeric values. | |
| 10256 * | |
| 10257 * @static | |
| 10258 * @memberOf _ | |
| 10259 * @category Lang | |
| 10260 * @param {*} value The value to check. | |
| 10261 * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. | |
| 10262 * @example | |
| 10263 * | |
| 10264 * _.isNaN(NaN); | |
| 10265 * // => true | |
| 10266 * | |
| 10267 * _.isNaN(new Number(NaN)); | |
| 10268 * // => true | |
| 10269 * | |
| 10270 * isNaN(undefined); | |
| 10271 * // => true | |
| 10272 * | |
| 10273 * _.isNaN(undefined); | |
| 10274 * // => false | |
| 10275 */ | |
| 10276 function isNaN(value) { | |
| 10277 // An `NaN` primitive is the only value that is not equal to itself. | |
| 10278 // Perform the `toStringTag` check first to avoid errors with some host objects in IE. | |
| 10279 return isNumber(value) && value != +value; | |
| 10280 } | |
| 10281 | |
| 10282 /** | |
| 10283 * Checks if `value` is a native function. | |
| 10284 * | |
| 10285 * @static | |
| 10286 * @memberOf _ | |
| 10287 * @category Lang | |
| 10288 * @param {*} value The value to check. | |
| 10289 * @returns {boolean} Returns `true` if `value` is a native function, else `false`. | |
| 10290 * @example | |
| 10291 * | |
| 10292 * _.isNative(Array.prototype.push); | |
| 10293 * // => true | |
| 10294 * | |
| 10295 * _.isNative(_); | |
| 10296 * // => false | |
| 10297 */ | |
| 10298 function isNative(value) { | |
| 10299 if (value == null) { | |
| 10300 return false; | |
| 10301 } | |
| 10302 if (objToString.call(value) == funcTag) { | |
| 10303 return reIsNative.test(fnToString.call(value)); | |
| 10304 } | |
| 10305 return isObjectLike(value) && reIsHostCtor.test(value); | |
| 10306 } | |
| 10307 | |
| 10308 /** | |
| 10309 * Checks if `value` is `null`. | |
| 10310 * | |
| 10311 * @static | |
| 10312 * @memberOf _ | |
| 10313 * @category Lang | |
| 10314 * @param {*} value The value to check. | |
| 10315 * @returns {boolean} Returns `true` if `value` is `null`, else `false`. | |
| 10316 * @example | |
| 10317 * | |
| 10318 * _.isNull(null); | |
| 10319 * // => true | |
| 10320 * | |
| 10321 * _.isNull(void 0); | |
| 10322 * // => false | |
| 10323 */ | |
| 10324 function isNull(value) { | |
| 10325 return value === null; | |
| 10326 } | |
| 10327 | |
| 10328 /** | |
| 10329 * Checks if `value` is classified as a `Number` primitive or object. | |
| 10330 * | |
| 10331 * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are classified | |
| 10332 * as numbers, use the `_.isFinite` method. | |
| 10333 * | |
| 10334 * @static | |
| 10335 * @memberOf _ | |
| 10336 * @category Lang | |
| 10337 * @param {*} value The value to check. | |
| 10338 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 10339 * @example | |
| 10340 * | |
| 10341 * _.isNumber(8.4); | |
| 10342 * // => true | |
| 10343 * | |
| 10344 * _.isNumber(NaN); | |
| 10345 * // => true | |
| 10346 * | |
| 10347 * _.isNumber('8.4'); | |
| 10348 * // => false | |
| 10349 */ | |
| 10350 function isNumber(value) { | |
| 10351 return typeof value == 'number' || (isObjectLike(value) && objToString.call(value) == numberTag); | |
| 10352 } | |
| 10353 | |
| 10354 /** | |
| 10355 * Checks if `value` is a plain object, that is, an object created by the | |
| 10356 * `Object` constructor or one with a `[[Prototype]]` of `null`. | |
| 10357 * | |
| 10358 * **Note:** This method assumes objects created by the `Object` constructor | |
| 10359 * have no inherited enumerable properties. | |
| 10360 * | |
| 10361 * @static | |
| 10362 * @memberOf _ | |
| 10363 * @category Lang | |
| 10364 * @param {*} value The value to check. | |
| 10365 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. | |
| 10366 * @example | |
| 10367 * | |
| 10368 * function Foo() { | |
| 10369 * this.a = 1; | |
| 10370 * } | |
| 10371 * | |
| 10372 * _.isPlainObject(new Foo); | |
| 10373 * // => false | |
| 10374 * | |
| 10375 * _.isPlainObject([1, 2, 3]); | |
| 10376 * // => false | |
| 10377 * | |
| 10378 * _.isPlainObject({ 'x': 0, 'y': 0 }); | |
| 10379 * // => true | |
| 10380 * | |
| 10381 * _.isPlainObject(Object.create(null)); | |
| 10382 * // => true | |
| 10383 */ | |
| 10384 var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) { | |
| 10385 if (!(value && objToString.call(value) == objectTag)) { | |
| 10386 return false; | |
| 10387 } | |
| 10388 var valueOf = value.valueOf, | |
| 10389 objProto = isNative(valueOf) && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto); | |
| 10390 | |
| 10391 return objProto | |
| 10392 ? (value == objProto || getPrototypeOf(value) == objProto) | |
| 10393 : shimIsPlainObject(value); | |
| 10394 }; | |
| 10395 | |
| 10396 /** | |
| 10397 * Checks if `value` is classified as a `RegExp` object. | |
| 10398 * | |
| 10399 * @static | |
| 10400 * @memberOf _ | |
| 10401 * @category Lang | |
| 10402 * @param {*} value The value to check. | |
| 10403 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 10404 * @example | |
| 10405 * | |
| 10406 * _.isRegExp(/abc/); | |
| 10407 * // => true | |
| 10408 * | |
| 10409 * _.isRegExp('/abc/'); | |
| 10410 * // => false | |
| 10411 */ | |
| 10412 function isRegExp(value) { | |
| 10413 return (isObjectLike(value) && objToString.call(value) == regexpTag) || false; | |
| 10414 } | |
| 10415 | |
| 10416 /** | |
| 10417 * Checks if `value` is classified as a `String` primitive or object. | |
| 10418 * | |
| 10419 * @static | |
| 10420 * @memberOf _ | |
| 10421 * @category Lang | |
| 10422 * @param {*} value The value to check. | |
| 10423 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 10424 * @example | |
| 10425 * | |
| 10426 * _.isString('abc'); | |
| 10427 * // => true | |
| 10428 * | |
| 10429 * _.isString(1); | |
| 10430 * // => false | |
| 10431 */ | |
| 10432 function isString(value) { | |
| 10433 return typeof value == 'string' || (isObjectLike(value) && objToString.call(value) == stringTag); | |
| 10434 } | |
| 10435 | |
| 10436 /** | |
| 10437 * Checks if `value` is classified as a typed array. | |
| 10438 * | |
| 10439 * @static | |
| 10440 * @memberOf _ | |
| 10441 * @category Lang | |
| 10442 * @param {*} value The value to check. | |
| 10443 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. | |
| 10444 * @example | |
| 10445 * | |
| 10446 * _.isTypedArray(new Uint8Array); | |
| 10447 * // => true | |
| 10448 * | |
| 10449 * _.isTypedArray([]); | |
| 10450 * // => false | |
| 10451 */ | |
| 10452 function isTypedArray(value) { | |
| 10453 return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[objToString.call(value)]; | |
| 10454 } | |
| 10455 | |
| 10456 /** | |
| 10457 * Checks if `value` is `undefined`. | |
| 10458 * | |
| 10459 * @static | |
| 10460 * @memberOf _ | |
| 10461 * @category Lang | |
| 10462 * @param {*} value The value to check. | |
| 10463 * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. | |
| 10464 * @example | |
| 10465 * | |
| 10466 * _.isUndefined(void 0); | |
| 10467 * // => true | |
| 10468 * | |
| 10469 * _.isUndefined(null); | |
| 10470 * // => false | |
| 10471 */ | |
| 10472 function isUndefined(value) { | |
| 10473 return value === undefined; | |
| 10474 } | |
| 10475 | |
| 10476 /** | |
| 10477 * Converts `value` to an array. | |
| 10478 * | |
| 10479 * @static | |
| 10480 * @memberOf _ | |
| 10481 * @category Lang | |
| 10482 * @param {*} value The value to convert. | |
| 10483 * @returns {Array} Returns the converted array. | |
| 10484 * @example | |
| 10485 * | |
| 10486 * (function() { | |
| 10487 * return _.toArray(arguments).slice(1); | |
| 10488 * }(1, 2, 3)); | |
| 10489 * // => [2, 3] | |
| 10490 */ | |
| 10491 function toArray(value) { | |
| 10492 var length = value ? getLength(value) : 0; | |
| 10493 if (!isLength(length)) { | |
| 10494 return values(value); | |
| 10495 } | |
| 10496 if (!length) { | |
| 10497 return []; | |
| 10498 } | |
| 10499 return arrayCopy(value); | |
| 10500 } | |
| 10501 | |
| 10502 /** | |
| 10503 * Converts `value` to a plain object flattening inherited enumerable | |
| 10504 * properties of `value` to own properties of the plain object. | |
| 10505 * | |
| 10506 * @static | |
| 10507 * @memberOf _ | |
| 10508 * @category Lang | |
| 10509 * @param {*} value The value to convert. | |
| 10510 * @returns {Object} Returns the converted plain object. | |
| 10511 * @example | |
| 10512 * | |
| 10513 * function Foo() { | |
| 10514 * this.b = 2; | |
| 10515 * } | |
| 10516 * | |
| 10517 * Foo.prototype.c = 3; | |
| 10518 * | |
| 10519 * _.assign({ 'a': 1 }, new Foo); | |
| 10520 * // => { 'a': 1, 'b': 2 } | |
| 10521 * | |
| 10522 * _.assign({ 'a': 1 }, _.toPlainObject(new Foo)); | |
| 10523 * // => { 'a': 1, 'b': 2, 'c': 3 } | |
| 10524 */ | |
| 10525 function toPlainObject(value) { | |
| 10526 return baseCopy(value, keysIn(value)); | |
| 10527 } | |
| 10528 | |
| 10529 /*------------------------------------------------------------------------*/ | |
| 10530 | |
| 10531 /** | |
| 10532 * Assigns own enumerable properties of source object(s) to the destination | |
| 10533 * object. Subsequent sources overwrite property assignments of previous sources. | |
| 10534 * If `customizer` is provided it is invoked to produce the assigned values. | |
| 10535 * The `customizer` is bound to `thisArg` and invoked with five arguments: | |
| 10536 * (objectValue, sourceValue, key, object, source). | |
| 10537 * | |
| 10538 * **Note:** This method mutates `object` and is based on | |
| 10539 * [`Object.assign`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign). | |
| 10540 * | |
| 10541 * | |
| 10542 * @static | |
| 10543 * @memberOf _ | |
| 10544 * @alias extend | |
| 10545 * @category Object | |
| 10546 * @param {Object} object The destination object. | |
| 10547 * @param {...Object} [sources] The source objects. | |
| 10548 * @param {Function} [customizer] The function to customize assigned values. | |
| 10549 * @param {*} [thisArg] The `this` binding of `customizer`. | |
| 10550 * @returns {Object} Returns `object`. | |
| 10551 * @example | |
| 10552 * | |
| 10553 * _.assign({ 'user': 'barney' }, { 'age': 40 }, { 'user': 'fred' }); | |
| 10554 * // => { 'user': 'fred', 'age': 40 } | |
| 10555 * | |
| 10556 * // using a customizer callback | |
| 10557 * var defaults = _.partialRight(_.assign, function(value, other) { | |
| 10558 * return _.isUndefined(value) ? other : value; | |
| 10559 * }); | |
| 10560 * | |
| 10561 * defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' }); | |
| 10562 * // => { 'user': 'barney', 'age': 36 } | |
| 10563 */ | |
| 10564 var assign = createAssigner(function(object, source, customizer) { | |
| 10565 return customizer | |
| 10566 ? assignWith(object, source, customizer) | |
| 10567 : baseAssign(object, source); | |
| 10568 }); | |
| 10569 | |
| 10570 /** | |
| 10571 * Creates an object that inherits from the given `prototype` object. If a | |
| 10572 * `properties` object is provided its own enumerable properties are assigned | |
| 10573 * to the created object. | |
| 10574 * | |
| 10575 * @static | |
| 10576 * @memberOf _ | |
| 10577 * @category Object | |
| 10578 * @param {Object} prototype The object to inherit from. | |
| 10579 * @param {Object} [properties] The properties to assign to the object. | |
| 10580 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 10581 * @returns {Object} Returns the new object. | |
| 10582 * @example | |
| 10583 * | |
| 10584 * function Shape() { | |
| 10585 * this.x = 0; | |
| 10586 * this.y = 0; | |
| 10587 * } | |
| 10588 * | |
| 10589 * function Circle() { | |
| 10590 * Shape.call(this); | |
| 10591 * } | |
| 10592 * | |
| 10593 * Circle.prototype = _.create(Shape.prototype, { | |
| 10594 * 'constructor': Circle | |
| 10595 * }); | |
| 10596 * | |
| 10597 * var circle = new Circle; | |
| 10598 * circle instanceof Circle; | |
| 10599 * // => true | |
| 10600 * | |
| 10601 * circle instanceof Shape; | |
| 10602 * // => true | |
| 10603 */ | |
| 10604 function create(prototype, properties, guard) { | |
| 10605 var result = baseCreate(prototype); | |
| 10606 if (guard && isIterateeCall(prototype, properties, guard)) { | |
| 10607 properties = null; | |
| 10608 } | |
| 10609 return properties ? baseAssign(result, properties) : result; | |
| 10610 } | |
| 10611 | |
| 10612 /** | |
| 10613 * Assigns own enumerable properties of source object(s) to the destination | |
| 10614 * object for all destination properties that resolve to `undefined`. Once a | |
| 10615 * property is set, additional values of the same property are ignored. | |
| 10616 * | |
| 10617 * **Note:** This method mutates `object`. | |
| 10618 * | |
| 10619 * @static | |
| 10620 * @memberOf _ | |
| 10621 * @category Object | |
| 10622 * @param {Object} object The destination object. | |
| 10623 * @param {...Object} [sources] The source objects. | |
| 10624 * @returns {Object} Returns `object`. | |
| 10625 * @example | |
| 10626 * | |
| 10627 * _.defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' }); | |
| 10628 * // => { 'user': 'barney', 'age': 36 } | |
| 10629 */ | |
| 10630 var defaults = restParam(function(args) { | |
| 10631 var object = args[0]; | |
| 10632 if (object == null) { | |
| 10633 return object; | |
| 10634 } | |
| 10635 args.push(assignDefaults); | |
| 10636 return assign.apply(undefined, args); | |
| 10637 }); | |
| 10638 | |
| 10639 /** | |
| 10640 * This method is like `_.find` except that it returns the key of the first | |
| 10641 * element `predicate` returns truthy for instead of the element itself. | |
| 10642 * | |
| 10643 * If a property name is provided for `predicate` the created `_.property` | |
| 10644 * style callback returns the property value of the given element. | |
| 10645 * | |
| 10646 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 10647 * style callback returns `true` for elements that have a matching property | |
| 10648 * value, else `false`. | |
| 10649 * | |
| 10650 * If an object is provided for `predicate` the created `_.matches` style | |
| 10651 * callback returns `true` for elements that have the properties of the given | |
| 10652 * object, else `false`. | |
| 10653 * | |
| 10654 * @static | |
| 10655 * @memberOf _ | |
| 10656 * @category Object | |
| 10657 * @param {Object} object The object to search. | |
| 10658 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 10659 * per iteration. | |
| 10660 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 10661 * @returns {string|undefined} Returns the key of the matched element, else `undefined`. | |
| 10662 * @example | |
| 10663 * | |
| 10664 * var users = { | |
| 10665 * 'barney': { 'age': 36, 'active': true }, | |
| 10666 * 'fred': { 'age': 40, 'active': false }, | |
| 10667 * 'pebbles': { 'age': 1, 'active': true } | |
| 10668 * }; | |
| 10669 * | |
| 10670 * _.findKey(users, function(chr) { | |
| 10671 * return chr.age < 40; | |
| 10672 * }); | |
| 10673 * // => 'barney' (iteration order is not guaranteed) | |
| 10674 * | |
| 10675 * // using the `_.matches` callback shorthand | |
| 10676 * _.findKey(users, { 'age': 1, 'active': true }); | |
| 10677 * // => 'pebbles' | |
| 10678 * | |
| 10679 * // using the `_.matchesProperty` callback shorthand | |
| 10680 * _.findKey(users, 'active', false); | |
| 10681 * // => 'fred' | |
| 10682 * | |
| 10683 * // using the `_.property` callback shorthand | |
| 10684 * _.findKey(users, 'active'); | |
| 10685 * // => 'barney' | |
| 10686 */ | |
| 10687 var findKey = createFindKey(baseForOwn); | |
| 10688 | |
| 10689 /** | |
| 10690 * This method is like `_.findKey` except that it iterates over elements of | |
| 10691 * a collection in the opposite order. | |
| 10692 * | |
| 10693 * If a property name is provided for `predicate` the created `_.property` | |
| 10694 * style callback returns the property value of the given element. | |
| 10695 * | |
| 10696 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 10697 * style callback returns `true` for elements that have a matching property | |
| 10698 * value, else `false`. | |
| 10699 * | |
| 10700 * If an object is provided for `predicate` the created `_.matches` style | |
| 10701 * callback returns `true` for elements that have the properties of the given | |
| 10702 * object, else `false`. | |
| 10703 * | |
| 10704 * @static | |
| 10705 * @memberOf _ | |
| 10706 * @category Object | |
| 10707 * @param {Object} object The object to search. | |
| 10708 * @param {Function|Object|string} [predicate=_.identity] The function invoked | |
| 10709 * per iteration. | |
| 10710 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 10711 * @returns {string|undefined} Returns the key of the matched element, else `undefined`. | |
| 10712 * @example | |
| 10713 * | |
| 10714 * var users = { | |
| 10715 * 'barney': { 'age': 36, 'active': true }, | |
| 10716 * 'fred': { 'age': 40, 'active': false }, | |
| 10717 * 'pebbles': { 'age': 1, 'active': true } | |
| 10718 * }; | |
| 10719 * | |
| 10720 * _.findLastKey(users, function(chr) { | |
| 10721 * return chr.age < 40; | |
| 10722 * }); | |
| 10723 * // => returns `pebbles` assuming `_.findKey` returns `barney` | |
| 10724 * | |
| 10725 * // using the `_.matches` callback shorthand | |
| 10726 * _.findLastKey(users, { 'age': 36, 'active': true }); | |
| 10727 * // => 'barney' | |
| 10728 * | |
| 10729 * // using the `_.matchesProperty` callback shorthand | |
| 10730 * _.findLastKey(users, 'active', false); | |
| 10731 * // => 'fred' | |
| 10732 * | |
| 10733 * // using the `_.property` callback shorthand | |
| 10734 * _.findLastKey(users, 'active'); | |
| 10735 * // => 'pebbles' | |
| 10736 */ | |
| 10737 var findLastKey = createFindKey(baseForOwnRight); | |
| 10738 | |
| 10739 /** | |
| 10740 * Iterates over own and inherited enumerable properties of an object invoking | |
| 10741 * `iteratee` for each property. The `iteratee` is bound to `thisArg` and invoked | |
| 10742 * with three arguments: (value, key, object). Iteratee functions may exit | |
| 10743 * iteration early by explicitly returning `false`. | |
| 10744 * | |
| 10745 * @static | |
| 10746 * @memberOf _ | |
| 10747 * @category Object | |
| 10748 * @param {Object} object The object to iterate over. | |
| 10749 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10750 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 10751 * @returns {Object} Returns `object`. | |
| 10752 * @example | |
| 10753 * | |
| 10754 * function Foo() { | |
| 10755 * this.a = 1; | |
| 10756 * this.b = 2; | |
| 10757 * } | |
| 10758 * | |
| 10759 * Foo.prototype.c = 3; | |
| 10760 * | |
| 10761 * _.forIn(new Foo, function(value, key) { | |
| 10762 * console.log(key); | |
| 10763 * }); | |
| 10764 * // => logs 'a', 'b', and 'c' (iteration order is not guaranteed) | |
| 10765 */ | |
| 10766 var forIn = createForIn(baseFor); | |
| 10767 | |
| 10768 /** | |
| 10769 * This method is like `_.forIn` except that it iterates over properties of | |
| 10770 * `object` in the opposite order. | |
| 10771 * | |
| 10772 * @static | |
| 10773 * @memberOf _ | |
| 10774 * @category Object | |
| 10775 * @param {Object} object The object to iterate over. | |
| 10776 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10777 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 10778 * @returns {Object} Returns `object`. | |
| 10779 * @example | |
| 10780 * | |
| 10781 * function Foo() { | |
| 10782 * this.a = 1; | |
| 10783 * this.b = 2; | |
| 10784 * } | |
| 10785 * | |
| 10786 * Foo.prototype.c = 3; | |
| 10787 * | |
| 10788 * _.forInRight(new Foo, function(value, key) { | |
| 10789 * console.log(key); | |
| 10790 * }); | |
| 10791 * // => logs 'c', 'b', and 'a' assuming `_.forIn ` logs 'a', 'b', and 'c' | |
| 10792 */ | |
| 10793 var forInRight = createForIn(baseForRight); | |
| 10794 | |
| 10795 /** | |
| 10796 * Iterates over own enumerable properties of an object invoking `iteratee` | |
| 10797 * for each property. The `iteratee` is bound to `thisArg` and invoked with | |
| 10798 * three arguments: (value, key, object). Iteratee functions may exit iteration | |
| 10799 * early by explicitly returning `false`. | |
| 10800 * | |
| 10801 * @static | |
| 10802 * @memberOf _ | |
| 10803 * @category Object | |
| 10804 * @param {Object} object The object to iterate over. | |
| 10805 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10806 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 10807 * @returns {Object} Returns `object`. | |
| 10808 * @example | |
| 10809 * | |
| 10810 * function Foo() { | |
| 10811 * this.a = 1; | |
| 10812 * this.b = 2; | |
| 10813 * } | |
| 10814 * | |
| 10815 * Foo.prototype.c = 3; | |
| 10816 * | |
| 10817 * _.forOwn(new Foo, function(value, key) { | |
| 10818 * console.log(key); | |
| 10819 * }); | |
| 10820 * // => logs 'a' and 'b' (iteration order is not guaranteed) | |
| 10821 */ | |
| 10822 var forOwn = createForOwn(baseForOwn); | |
| 10823 | |
| 10824 /** | |
| 10825 * This method is like `_.forOwn` except that it iterates over properties of | |
| 10826 * `object` in the opposite order. | |
| 10827 * | |
| 10828 * @static | |
| 10829 * @memberOf _ | |
| 10830 * @category Object | |
| 10831 * @param {Object} object The object to iterate over. | |
| 10832 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10833 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 10834 * @returns {Object} Returns `object`. | |
| 10835 * @example | |
| 10836 * | |
| 10837 * function Foo() { | |
| 10838 * this.a = 1; | |
| 10839 * this.b = 2; | |
| 10840 * } | |
| 10841 * | |
| 10842 * Foo.prototype.c = 3; | |
| 10843 * | |
| 10844 * _.forOwnRight(new Foo, function(value, key) { | |
| 10845 * console.log(key); | |
| 10846 * }); | |
| 10847 * // => logs 'b' and 'a' assuming `_.forOwn` logs 'a' and 'b' | |
| 10848 */ | |
| 10849 var forOwnRight = createForOwn(baseForOwnRight); | |
| 10850 | |
| 10851 /** | |
| 10852 * Creates an array of function property names from all enumerable properties, | |
| 10853 * own and inherited, of `object`. | |
| 10854 * | |
| 10855 * @static | |
| 10856 * @memberOf _ | |
| 10857 * @alias methods | |
| 10858 * @category Object | |
| 10859 * @param {Object} object The object to inspect. | |
| 10860 * @returns {Array} Returns the new array of property names. | |
| 10861 * @example | |
| 10862 * | |
| 10863 * _.functions(_); | |
| 10864 * // => ['after', 'ary', 'assign', ...] | |
| 10865 */ | |
| 10866 function functions(object) { | |
| 10867 return baseFunctions(object, keysIn(object)); | |
| 10868 } | |
| 10869 | |
| 10870 /** | |
| 10871 * Gets the property value of `path` on `object`. If the resolved value is | |
| 10872 * `undefined` the `defaultValue` is used in its place. | |
| 10873 * | |
| 10874 * @static | |
| 10875 * @memberOf _ | |
| 10876 * @category Object | |
| 10877 * @param {Object} object The object to query. | |
| 10878 * @param {Array|string} path The path of the property to get. | |
| 10879 * @param {*} [defaultValue] The value returned if the resolved value is `undefined`. | |
| 10880 * @returns {*} Returns the resolved value. | |
| 10881 * @example | |
| 10882 * | |
| 10883 * var object = { 'a': [{ 'b': { 'c': 3 } }] }; | |
| 10884 * | |
| 10885 * _.get(object, 'a[0].b.c'); | |
| 10886 * // => 3 | |
| 10887 * | |
| 10888 * _.get(object, ['a', '0', 'b', 'c']); | |
| 10889 * // => 3 | |
| 10890 * | |
| 10891 * _.get(object, 'a.b.c', 'default'); | |
| 10892 * // => 'default' | |
| 10893 */ | |
| 10894 function get(object, path, defaultValue) { | |
| 10895 var result = object == null ? undefined : baseGet(object, toPath(path), path + ''); | |
| 10896 return result === undefined ? defaultValue : result; | |
| 10897 } | |
| 10898 | |
| 10899 /** | |
| 10900 * Checks if `path` is a direct property. | |
| 10901 * | |
| 10902 * @static | |
| 10903 * @memberOf _ | |
| 10904 * @category Object | |
| 10905 * @param {Object} object The object to query. | |
| 10906 * @param {Array|string} path The path to check. | |
| 10907 * @returns {boolean} Returns `true` if `path` is a direct property, else `false`. | |
| 10908 * @example | |
| 10909 * | |
| 10910 * var object = { 'a': { 'b': { 'c': 3 } } }; | |
| 10911 * | |
| 10912 * _.has(object, 'a'); | |
| 10913 * // => true | |
| 10914 * | |
| 10915 * _.has(object, 'a.b.c'); | |
| 10916 * // => true | |
| 10917 * | |
| 10918 * _.has(object, ['a', 'b', 'c']); | |
| 10919 * // => true | |
| 10920 */ | |
| 10921 function has(object, path) { | |
| 10922 if (object == null) { | |
| 10923 return false; | |
| 10924 } | |
| 10925 var result = hasOwnProperty.call(object, path); | |
| 10926 if (!result && !isKey(path)) { | |
| 10927 path = toPath(path); | |
| 10928 object = path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1)); | |
| 10929 path = last(path); | |
| 10930 result = object != null && hasOwnProperty.call(object, path); | |
| 10931 } | |
| 10932 return result; | |
| 10933 } | |
| 10934 | |
| 10935 /** | |
| 10936 * Creates an object composed of the inverted keys and values of `object`. | |
| 10937 * If `object` contains duplicate values, subsequent values overwrite property | |
| 10938 * assignments of previous values unless `multiValue` is `true`. | |
| 10939 * | |
| 10940 * @static | |
| 10941 * @memberOf _ | |
| 10942 * @category Object | |
| 10943 * @param {Object} object The object to invert. | |
| 10944 * @param {boolean} [multiValue] Allow multiple values per key. | |
| 10945 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 10946 * @returns {Object} Returns the new inverted object. | |
| 10947 * @example | |
| 10948 * | |
| 10949 * var object = { 'a': 1, 'b': 2, 'c': 1 }; | |
| 10950 * | |
| 10951 * _.invert(object); | |
| 10952 * // => { '1': 'c', '2': 'b' } | |
| 10953 * | |
| 10954 * // with `multiValue` | |
| 10955 * _.invert(object, true); | |
| 10956 * // => { '1': ['a', 'c'], '2': ['b'] } | |
| 10957 */ | |
| 10958 function invert(object, multiValue, guard) { | |
| 10959 if (guard && isIterateeCall(object, multiValue, guard)) { | |
| 10960 multiValue = null; | |
| 10961 } | |
| 10962 var index = -1, | |
| 10963 props = keys(object), | |
| 10964 length = props.length, | |
| 10965 result = {}; | |
| 10966 | |
| 10967 while (++index < length) { | |
| 10968 var key = props[index], | |
| 10969 value = object[key]; | |
| 10970 | |
| 10971 if (multiValue) { | |
| 10972 if (hasOwnProperty.call(result, value)) { | |
| 10973 result[value].push(key); | |
| 10974 } else { | |
| 10975 result[value] = [key]; | |
| 10976 } | |
| 10977 } | |
| 10978 else { | |
| 10979 result[value] = key; | |
| 10980 } | |
| 10981 } | |
| 10982 return result; | |
| 10983 } | |
| 10984 | |
| 10985 /** | |
| 10986 * Creates an array of the own enumerable property names of `object`. | |
| 10987 * | |
| 10988 * **Note:** Non-object values are coerced to objects. See the | |
| 10989 * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.keys) | |
| 10990 * for more details. | |
| 10991 * | |
| 10992 * @static | |
| 10993 * @memberOf _ | |
| 10994 * @category Object | |
| 10995 * @param {Object} object The object to query. | |
| 10996 * @returns {Array} Returns the array of property names. | |
| 10997 * @example | |
| 10998 * | |
| 10999 * function Foo() { | |
| 11000 * this.a = 1; | |
| 11001 * this.b = 2; | |
| 11002 * } | |
| 11003 * | |
| 11004 * Foo.prototype.c = 3; | |
| 11005 * | |
| 11006 * _.keys(new Foo); | |
| 11007 * // => ['a', 'b'] (iteration order is not guaranteed) | |
| 11008 * | |
| 11009 * _.keys('hi'); | |
| 11010 * // => ['0', '1'] | |
| 11011 */ | |
| 11012 var keys = !nativeKeys ? shimKeys : function(object) { | |
| 11013 if (object) { | |
| 11014 var Ctor = object.constructor, | |
| 11015 length = object.length; | |
| 11016 } | |
| 11017 if ((typeof Ctor == 'function' && Ctor.prototype === object) || | |
| 11018 (typeof object != 'function' && isLength(length))) { | |
| 11019 return shimKeys(object); | |
| 11020 } | |
| 11021 return isObject(object) ? nativeKeys(object) : []; | |
| 11022 }; | |
| 11023 | |
| 11024 /** | |
| 11025 * Creates an array of the own and inherited enumerable property names of `object`. | |
| 11026 * | |
| 11027 * **Note:** Non-object values are coerced to objects. | |
| 11028 * | |
| 11029 * @static | |
| 11030 * @memberOf _ | |
| 11031 * @category Object | |
| 11032 * @param {Object} object The object to query. | |
| 11033 * @returns {Array} Returns the array of property names. | |
| 11034 * @example | |
| 11035 * | |
| 11036 * function Foo() { | |
| 11037 * this.a = 1; | |
| 11038 * this.b = 2; | |
| 11039 * } | |
| 11040 * | |
| 11041 * Foo.prototype.c = 3; | |
| 11042 * | |
| 11043 * _.keysIn(new Foo); | |
| 11044 * // => ['a', 'b', 'c'] (iteration order is not guaranteed) | |
| 11045 */ | |
| 11046 function keysIn(object) { | |
| 11047 if (object == null) { | |
| 11048 return []; | |
| 11049 } | |
| 11050 if (!isObject(object)) { | |
| 11051 object = Object(object); | |
| 11052 } | |
| 11053 var length = object.length; | |
| 11054 length = (length && isLength(length) && | |
| 11055 (isArray(object) || (support.nonEnumArgs && isArguments(object))) && length) || 0; | |
| 11056 | |
| 11057 var Ctor = object.constructor, | |
| 11058 index = -1, | |
| 11059 isProto = typeof Ctor == 'function' && Ctor.prototype === object, | |
| 11060 result = Array(length), | |
| 11061 skipIndexes = length > 0; | |
| 11062 | |
| 11063 while (++index < length) { | |
| 11064 result[index] = (index + ''); | |
| 11065 } | |
| 11066 for (var key in object) { | |
| 11067 if (!(skipIndexes && isIndex(key, length)) && | |
| 11068 !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { | |
| 11069 result.push(key); | |
| 11070 } | |
| 11071 } | |
| 11072 return result; | |
| 11073 } | |
| 11074 | |
| 11075 /** | |
| 11076 * Creates an object with the same keys as `object` and values generated by | |
| 11077 * running each own enumerable property of `object` through `iteratee`. The | |
| 11078 * iteratee function is bound to `thisArg` and invoked with three arguments: | |
| 11079 * (value, key, object). | |
| 11080 * | |
| 11081 * If a property name is provided for `iteratee` the created `_.property` | |
| 11082 * style callback returns the property value of the given element. | |
| 11083 * | |
| 11084 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 11085 * style callback returns `true` for elements that have a matching property | |
| 11086 * value, else `false`. | |
| 11087 * | |
| 11088 * If an object is provided for `iteratee` the created `_.matches` style | |
| 11089 * callback returns `true` for elements that have the properties of the given | |
| 11090 * object, else `false`. | |
| 11091 * | |
| 11092 * @static | |
| 11093 * @memberOf _ | |
| 11094 * @category Object | |
| 11095 * @param {Object} object The object to iterate over. | |
| 11096 * @param {Function|Object|string} [iteratee=_.identity] The function invoked | |
| 11097 * per iteration. | |
| 11098 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 11099 * @returns {Object} Returns the new mapped object. | |
| 11100 * @example | |
| 11101 * | |
| 11102 * _.mapValues({ 'a': 1, 'b': 2 }, function(n) { | |
| 11103 * return n * 3; | |
| 11104 * }); | |
| 11105 * // => { 'a': 3, 'b': 6 } | |
| 11106 * | |
| 11107 * var users = { | |
| 11108 * 'fred': { 'user': 'fred', 'age': 40 }, | |
| 11109 * 'pebbles': { 'user': 'pebbles', 'age': 1 } | |
| 11110 * }; | |
| 11111 * | |
| 11112 * // using the `_.property` callback shorthand | |
| 11113 * _.mapValues(users, 'age'); | |
| 11114 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) | |
| 11115 */ | |
| 11116 function mapValues(object, iteratee, thisArg) { | |
| 11117 var result = {}; | |
| 11118 iteratee = getCallback(iteratee, thisArg, 3); | |
| 11119 | |
| 11120 baseForOwn(object, function(value, key, object) { | |
| 11121 result[key] = iteratee(value, key, object); | |
| 11122 }); | |
| 11123 return result; | |
| 11124 } | |
| 11125 | |
| 11126 /** | |
| 11127 * Recursively merges own enumerable properties of the source object(s), that | |
| 11128 * don't resolve to `undefined` into the destination object. Subsequent sources | |
| 11129 * overwrite property assignments of previous sources. If `customizer` is | |
| 11130 * provided it is invoked to produce the merged values of the destination and | |
| 11131 * source properties. If `customizer` returns `undefined` merging is handled | |
| 11132 * by the method instead. The `customizer` is bound to `thisArg` and invoked | |
| 11133 * with five arguments: (objectValue, sourceValue, key, object, source). | |
| 11134 * | |
| 11135 * @static | |
| 11136 * @memberOf _ | |
| 11137 * @category Object | |
| 11138 * @param {Object} object The destination object. | |
| 11139 * @param {...Object} [sources] The source objects. | |
| 11140 * @param {Function} [customizer] The function to customize assigned values. | |
| 11141 * @param {*} [thisArg] The `this` binding of `customizer`. | |
| 11142 * @returns {Object} Returns `object`. | |
| 11143 * @example | |
| 11144 * | |
| 11145 * var users = { | |
| 11146 * 'data': [{ 'user': 'barney' }, { 'user': 'fred' }] | |
| 11147 * }; | |
| 11148 * | |
| 11149 * var ages = { | |
| 11150 * 'data': [{ 'age': 36 }, { 'age': 40 }] | |
| 11151 * }; | |
| 11152 * | |
| 11153 * _.merge(users, ages); | |
| 11154 * // => { 'data': [{ 'user': 'barney', 'age': 36 }, { 'user': 'fred', 'age': 40 }] } | |
| 11155 * | |
| 11156 * // using a customizer callback | |
| 11157 * var object = { | |
| 11158 * 'fruits': ['apple'], | |
| 11159 * 'vegetables': ['beet'] | |
| 11160 * }; | |
| 11161 * | |
| 11162 * var other = { | |
| 11163 * 'fruits': ['banana'], | |
| 11164 * 'vegetables': ['carrot'] | |
| 11165 * }; | |
| 11166 * | |
| 11167 * _.merge(object, other, function(a, b) { | |
| 11168 * if (_.isArray(a)) { | |
| 11169 * return a.concat(b); | |
| 11170 * } | |
| 11171 * }); | |
| 11172 * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot'] } | |
| 11173 */ | |
| 11174 var merge = createAssigner(baseMerge); | |
| 11175 | |
| 11176 /** | |
| 11177 * The opposite of `_.pick`; this method creates an object composed of the | |
| 11178 * own and inherited enumerable properties of `object` that are not omitted. | |
| 11179 * Property names may be specified as individual arguments or as arrays of | |
| 11180 * property names. If `predicate` is provided it is invoked for each property | |
| 11181 * of `object` omitting the properties `predicate` returns truthy for. The | |
| 11182 * predicate is bound to `thisArg` and invoked with three arguments: | |
| 11183 * (value, key, object). | |
| 11184 * | |
| 11185 * @static | |
| 11186 * @memberOf _ | |
| 11187 * @category Object | |
| 11188 * @param {Object} object The source object. | |
| 11189 * @param {Function|...(string|string[])} [predicate] The function invoked per | |
| 11190 * iteration or property names to omit, specified as individual property | |
| 11191 * names or arrays of property names. | |
| 11192 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 11193 * @returns {Object} Returns the new object. | |
| 11194 * @example | |
| 11195 * | |
| 11196 * var object = { 'user': 'fred', 'age': 40 }; | |
| 11197 * | |
| 11198 * _.omit(object, 'age'); | |
| 11199 * // => { 'user': 'fred' } | |
| 11200 * | |
| 11201 * _.omit(object, _.isNumber); | |
| 11202 * // => { 'user': 'fred' } | |
| 11203 */ | |
| 11204 var omit = restParam(function(object, props) { | |
| 11205 if (object == null) { | |
| 11206 return {}; | |
| 11207 } | |
| 11208 if (typeof props[0] != 'function') { | |
| 11209 var props = arrayMap(baseFlatten(props), String); | |
| 11210 return pickByArray(object, baseDifference(keysIn(object), props)); | |
| 11211 } | |
| 11212 var predicate = bindCallback(props[0], props[1], 3); | |
| 11213 return pickByCallback(object, function(value, key, object) { | |
| 11214 return !predicate(value, key, object); | |
| 11215 }); | |
| 11216 }); | |
| 11217 | |
| 11218 /** | |
| 11219 * Creates a two dimensional array of the key-value pairs for `object`, | |
| 11220 * e.g. `[[key1, value1], [key2, value2]]`. | |
| 11221 * | |
| 11222 * @static | |
| 11223 * @memberOf _ | |
| 11224 * @category Object | |
| 11225 * @param {Object} object The object to query. | |
| 11226 * @returns {Array} Returns the new array of key-value pairs. | |
| 11227 * @example | |
| 11228 * | |
| 11229 * _.pairs({ 'barney': 36, 'fred': 40 }); | |
| 11230 * // => [['barney', 36], ['fred', 40]] (iteration order is not guaranteed) | |
| 11231 */ | |
| 11232 function pairs(object) { | |
| 11233 var index = -1, | |
| 11234 props = keys(object), | |
| 11235 length = props.length, | |
| 11236 result = Array(length); | |
| 11237 | |
| 11238 while (++index < length) { | |
| 11239 var key = props[index]; | |
| 11240 result[index] = [key, object[key]]; | |
| 11241 } | |
| 11242 return result; | |
| 11243 } | |
| 11244 | |
| 11245 /** | |
| 11246 * Creates an object composed of the picked `object` properties. Property | |
| 11247 * names may be specified as individual arguments or as arrays of property | |
| 11248 * names. If `predicate` is provided it is invoked for each property of `object` | |
| 11249 * picking the properties `predicate` returns truthy for. The predicate is | |
| 11250 * bound to `thisArg` and invoked with three arguments: (value, key, object). | |
| 11251 * | |
| 11252 * @static | |
| 11253 * @memberOf _ | |
| 11254 * @category Object | |
| 11255 * @param {Object} object The source object. | |
| 11256 * @param {Function|...(string|string[])} [predicate] The function invoked per | |
| 11257 * iteration or property names to pick, specified as individual property | |
| 11258 * names or arrays of property names. | |
| 11259 * @param {*} [thisArg] The `this` binding of `predicate`. | |
| 11260 * @returns {Object} Returns the new object. | |
| 11261 * @example | |
| 11262 * | |
| 11263 * var object = { 'user': 'fred', 'age': 40 }; | |
| 11264 * | |
| 11265 * _.pick(object, 'user'); | |
| 11266 * // => { 'user': 'fred' } | |
| 11267 * | |
| 11268 * _.pick(object, _.isString); | |
| 11269 * // => { 'user': 'fred' } | |
| 11270 */ | |
| 11271 var pick = restParam(function(object, props) { | |
| 11272 if (object == null) { | |
| 11273 return {}; | |
| 11274 } | |
| 11275 return typeof props[0] == 'function' | |
| 11276 ? pickByCallback(object, bindCallback(props[0], props[1], 3)) | |
| 11277 : pickByArray(object, baseFlatten(props)); | |
| 11278 }); | |
| 11279 | |
| 11280 /** | |
| 11281 * This method is like `_.get` except that if the resolved value is a function | |
| 11282 * it is invoked with the `this` binding of its parent object and its result | |
| 11283 * is returned. | |
| 11284 * | |
| 11285 * @static | |
| 11286 * @memberOf _ | |
| 11287 * @category Object | |
| 11288 * @param {Object} object The object to query. | |
| 11289 * @param {Array|string} path The path of the property to resolve. | |
| 11290 * @param {*} [defaultValue] The value returned if the resolved value is `undefined`. | |
| 11291 * @returns {*} Returns the resolved value. | |
| 11292 * @example | |
| 11293 * | |
| 11294 * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] }; | |
| 11295 * | |
| 11296 * _.result(object, 'a[0].b.c1'); | |
| 11297 * // => 3 | |
| 11298 * | |
| 11299 * _.result(object, 'a[0].b.c2'); | |
| 11300 * // => 4 | |
| 11301 * | |
| 11302 * _.result(object, 'a.b.c', 'default'); | |
| 11303 * // => 'default' | |
| 11304 * | |
| 11305 * _.result(object, 'a.b.c', _.constant('default')); | |
| 11306 * // => 'default' | |
| 11307 */ | |
| 11308 function result(object, path, defaultValue) { | |
| 11309 var result = object == null ? undefined : object[path]; | |
| 11310 if (result === undefined) { | |
| 11311 if (object != null && !isKey(path, object)) { | |
| 11312 path = toPath(path); | |
| 11313 object = path.length == 1 ? object : baseGet(object, baseSlice(path, 0, -1)); | |
| 11314 result = object == null ? undefined : object[last(path)]; | |
| 11315 } | |
| 11316 result = result === undefined ? defaultValue : result; | |
| 11317 } | |
| 11318 return isFunction(result) ? result.call(object) : result; | |
| 11319 } | |
| 11320 | |
| 11321 /** | |
| 11322 * Sets the property value of `path` on `object`. If a portion of `path` | |
| 11323 * does not exist it is created. | |
| 11324 * | |
| 11325 * @static | |
| 11326 * @memberOf _ | |
| 11327 * @category Object | |
| 11328 * @param {Object} object The object to augment. | |
| 11329 * @param {Array|string} path The path of the property to set. | |
| 11330 * @param {*} value The value to set. | |
| 11331 * @returns {Object} Returns `object`. | |
| 11332 * @example | |
| 11333 * | |
| 11334 * var object = { 'a': [{ 'b': { 'c': 3 } }] }; | |
| 11335 * | |
| 11336 * _.set(object, 'a[0].b.c', 4); | |
| 11337 * console.log(object.a[0].b.c); | |
| 11338 * // => 4 | |
| 11339 * | |
| 11340 * _.set(object, 'x[0].y.z', 5); | |
| 11341 * console.log(object.x[0].y.z); | |
| 11342 * // => 5 | |
| 11343 */ | |
| 11344 function set(object, path, value) { | |
| 11345 if (object == null) { | |
| 11346 return object; | |
| 11347 } | |
| 11348 var pathKey = (path + ''); | |
| 11349 path = (object[pathKey] != null || isKey(path, object)) ? [pathKey] : toPath(path); | |
| 11350 | |
| 11351 var index = -1, | |
| 11352 length = path.length, | |
| 11353 endIndex = length - 1, | |
| 11354 nested = object; | |
| 11355 | |
| 11356 while (nested != null && ++index < length) { | |
| 11357 var key = path[index]; | |
| 11358 if (isObject(nested)) { | |
| 11359 if (index == endIndex) { | |
| 11360 nested[key] = value; | |
| 11361 } else if (nested[key] == null) { | |
| 11362 nested[key] = isIndex(path[index + 1]) ? [] : {}; | |
| 11363 } | |
| 11364 } | |
| 11365 nested = nested[key]; | |
| 11366 } | |
| 11367 return object; | |
| 11368 } | |
| 11369 | |
| 11370 /** | |
| 11371 * An alternative to `_.reduce`; this method transforms `object` to a new | |
| 11372 * `accumulator` object which is the result of running each of its own enumerable | |
| 11373 * properties through `iteratee`, with each invocation potentially mutating | |
| 11374 * the `accumulator` object. The `iteratee` is bound to `thisArg` and invoked | |
| 11375 * with four arguments: (accumulator, value, key, object). Iteratee functions | |
| 11376 * may exit iteration early by explicitly returning `false`. | |
| 11377 * | |
| 11378 * @static | |
| 11379 * @memberOf _ | |
| 11380 * @category Object | |
| 11381 * @param {Array|Object} object The object to iterate over. | |
| 11382 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 11383 * @param {*} [accumulator] The custom accumulator value. | |
| 11384 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 11385 * @returns {*} Returns the accumulated value. | |
| 11386 * @example | |
| 11387 * | |
| 11388 * _.transform([2, 3, 4], function(result, n) { | |
| 11389 * result.push(n *= n); | |
| 11390 * return n % 2 == 0; | |
| 11391 * }); | |
| 11392 * // => [4, 9] | |
| 11393 * | |
| 11394 * _.transform({ 'a': 1, 'b': 2 }, function(result, n, key) { | |
| 11395 * result[key] = n * 3; | |
| 11396 * }); | |
| 11397 * // => { 'a': 3, 'b': 6 } | |
| 11398 */ | |
| 11399 function transform(object, iteratee, accumulator, thisArg) { | |
| 11400 var isArr = isArray(object) || isTypedArray(object); | |
| 11401 iteratee = getCallback(iteratee, thisArg, 4); | |
| 11402 | |
| 11403 if (accumulator == null) { | |
| 11404 if (isArr || isObject(object)) { | |
| 11405 var Ctor = object.constructor; | |
| 11406 if (isArr) { | |
| 11407 accumulator = isArray(object) ? new Ctor : []; | |
| 11408 } else { | |
| 11409 accumulator = baseCreate(isFunction(Ctor) && Ctor.prototype); | |
| 11410 } | |
| 11411 } else { | |
| 11412 accumulator = {}; | |
| 11413 } | |
| 11414 } | |
| 11415 (isArr ? arrayEach : baseForOwn)(object, function(value, index, object) { | |
| 11416 return iteratee(accumulator, value, index, object); | |
| 11417 }); | |
| 11418 return accumulator; | |
| 11419 } | |
| 11420 | |
| 11421 /** | |
| 11422 * Creates an array of the own enumerable property values of `object`. | |
| 11423 * | |
| 11424 * **Note:** Non-object values are coerced to objects. | |
| 11425 * | |
| 11426 * @static | |
| 11427 * @memberOf _ | |
| 11428 * @category Object | |
| 11429 * @param {Object} object The object to query. | |
| 11430 * @returns {Array} Returns the array of property values. | |
| 11431 * @example | |
| 11432 * | |
| 11433 * function Foo() { | |
| 11434 * this.a = 1; | |
| 11435 * this.b = 2; | |
| 11436 * } | |
| 11437 * | |
| 11438 * Foo.prototype.c = 3; | |
| 11439 * | |
| 11440 * _.values(new Foo); | |
| 11441 * // => [1, 2] (iteration order is not guaranteed) | |
| 11442 * | |
| 11443 * _.values('hi'); | |
| 11444 * // => ['h', 'i'] | |
| 11445 */ | |
| 11446 function values(object) { | |
| 11447 return baseValues(object, keys(object)); | |
| 11448 } | |
| 11449 | |
| 11450 /** | |
| 11451 * Creates an array of the own and inherited enumerable property values | |
| 11452 * of `object`. | |
| 11453 * | |
| 11454 * **Note:** Non-object values are coerced to objects. | |
| 11455 * | |
| 11456 * @static | |
| 11457 * @memberOf _ | |
| 11458 * @category Object | |
| 11459 * @param {Object} object The object to query. | |
| 11460 * @returns {Array} Returns the array of property values. | |
| 11461 * @example | |
| 11462 * | |
| 11463 * function Foo() { | |
| 11464 * this.a = 1; | |
| 11465 * this.b = 2; | |
| 11466 * } | |
| 11467 * | |
| 11468 * Foo.prototype.c = 3; | |
| 11469 * | |
| 11470 * _.valuesIn(new Foo); | |
| 11471 * // => [1, 2, 3] (iteration order is not guaranteed) | |
| 11472 */ | |
| 11473 function valuesIn(object) { | |
| 11474 return baseValues(object, keysIn(object)); | |
| 11475 } | |
| 11476 | |
| 11477 /*------------------------------------------------------------------------*/ | |
| 11478 | |
| 11479 /** | |
| 11480 * Checks if `n` is between `start` and up to but not including, `end`. If | |
| 11481 * `end` is not specified it is set to `start` with `start` then set to `0`. | |
| 11482 * | |
| 11483 * @static | |
| 11484 * @memberOf _ | |
| 11485 * @category Number | |
| 11486 * @param {number} n The number to check. | |
| 11487 * @param {number} [start=0] The start of the range. | |
| 11488 * @param {number} end The end of the range. | |
| 11489 * @returns {boolean} Returns `true` if `n` is in the range, else `false`. | |
| 11490 * @example | |
| 11491 * | |
| 11492 * _.inRange(3, 2, 4); | |
| 11493 * // => true | |
| 11494 * | |
| 11495 * _.inRange(4, 8); | |
| 11496 * // => true | |
| 11497 * | |
| 11498 * _.inRange(4, 2); | |
| 11499 * // => false | |
| 11500 * | |
| 11501 * _.inRange(2, 2); | |
| 11502 * // => false | |
| 11503 * | |
| 11504 * _.inRange(1.2, 2); | |
| 11505 * // => true | |
| 11506 * | |
| 11507 * _.inRange(5.2, 4); | |
| 11508 * // => false | |
| 11509 */ | |
| 11510 function inRange(value, start, end) { | |
| 11511 start = +start || 0; | |
| 11512 if (typeof end === 'undefined') { | |
| 11513 end = start; | |
| 11514 start = 0; | |
| 11515 } else { | |
| 11516 end = +end || 0; | |
| 11517 } | |
| 11518 return value >= nativeMin(start, end) && value < nativeMax(start, end); | |
| 11519 } | |
| 11520 | |
| 11521 /** | |
| 11522 * Produces a random number between `min` and `max` (inclusive). If only one | |
| 11523 * argument is provided a number between `0` and the given number is returned. | |
| 11524 * If `floating` is `true`, or either `min` or `max` are floats, a floating-point | |
| 11525 * number is returned instead of an integer. | |
| 11526 * | |
| 11527 * @static | |
| 11528 * @memberOf _ | |
| 11529 * @category Number | |
| 11530 * @param {number} [min=0] The minimum possible value. | |
| 11531 * @param {number} [max=1] The maximum possible value. | |
| 11532 * @param {boolean} [floating] Specify returning a floating-point number. | |
| 11533 * @returns {number} Returns the random number. | |
| 11534 * @example | |
| 11535 * | |
| 11536 * _.random(0, 5); | |
| 11537 * // => an integer between 0 and 5 | |
| 11538 * | |
| 11539 * _.random(5); | |
| 11540 * // => also an integer between 0 and 5 | |
| 11541 * | |
| 11542 * _.random(5, true); | |
| 11543 * // => a floating-point number between 0 and 5 | |
| 11544 * | |
| 11545 * _.random(1.2, 5.2); | |
| 11546 * // => a floating-point number between 1.2 and 5.2 | |
| 11547 */ | |
| 11548 function random(min, max, floating) { | |
| 11549 if (floating && isIterateeCall(min, max, floating)) { | |
| 11550 max = floating = null; | |
| 11551 } | |
| 11552 var noMin = min == null, | |
| 11553 noMax = max == null; | |
| 11554 | |
| 11555 if (floating == null) { | |
| 11556 if (noMax && typeof min == 'boolean') { | |
| 11557 floating = min; | |
| 11558 min = 1; | |
| 11559 } | |
| 11560 else if (typeof max == 'boolean') { | |
| 11561 floating = max; | |
| 11562 noMax = true; | |
| 11563 } | |
| 11564 } | |
| 11565 if (noMin && noMax) { | |
| 11566 max = 1; | |
| 11567 noMax = false; | |
| 11568 } | |
| 11569 min = +min || 0; | |
| 11570 if (noMax) { | |
| 11571 max = min; | |
| 11572 min = 0; | |
| 11573 } else { | |
| 11574 max = +max || 0; | |
| 11575 } | |
| 11576 if (floating || min % 1 || max % 1) { | |
| 11577 var rand = nativeRandom(); | |
| 11578 return nativeMin(min + (rand * (max - min + parseFloat('1e-' + ((rand + '').length - 1)))), max); | |
| 11579 } | |
| 11580 return baseRandom(min, max); | |
| 11581 } | |
| 11582 | |
| 11583 /*------------------------------------------------------------------------*/ | |
| 11584 | |
| 11585 /** | |
| 11586 * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase). | |
| 11587 * | |
| 11588 * @static | |
| 11589 * @memberOf _ | |
| 11590 * @category String | |
| 11591 * @param {string} [string=''] The string to convert. | |
| 11592 * @returns {string} Returns the camel cased string. | |
| 11593 * @example | |
| 11594 * | |
| 11595 * _.camelCase('Foo Bar'); | |
| 11596 * // => 'fooBar' | |
| 11597 * | |
| 11598 * _.camelCase('--foo-bar'); | |
| 11599 * // => 'fooBar' | |
| 11600 * | |
| 11601 * _.camelCase('__foo_bar__'); | |
| 11602 * // => 'fooBar' | |
| 11603 */ | |
| 11604 var camelCase = createCompounder(function(result, word, index) { | |
| 11605 word = word.toLowerCase(); | |
| 11606 return result + (index ? (word.charAt(0).toUpperCase() + word.slice(1)) : word); | |
| 11607 }); | |
| 11608 | |
| 11609 /** | |
| 11610 * Capitalizes the first character of `string`. | |
| 11611 * | |
| 11612 * @static | |
| 11613 * @memberOf _ | |
| 11614 * @category String | |
| 11615 * @param {string} [string=''] The string to capitalize. | |
| 11616 * @returns {string} Returns the capitalized string. | |
| 11617 * @example | |
| 11618 * | |
| 11619 * _.capitalize('fred'); | |
| 11620 * // => 'Fred' | |
| 11621 */ | |
| 11622 function capitalize(string) { | |
| 11623 string = baseToString(string); | |
| 11624 return string && (string.charAt(0).toUpperCase() + string.slice(1)); | |
| 11625 } | |
| 11626 | |
| 11627 /** | |
| 11628 * Deburrs `string` by converting [latin-1 supplementary letters](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table) | |
| 11629 * to basic latin letters and removing [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). | |
| 11630 * | |
| 11631 * @static | |
| 11632 * @memberOf _ | |
| 11633 * @category String | |
| 11634 * @param {string} [string=''] The string to deburr. | |
| 11635 * @returns {string} Returns the deburred string. | |
| 11636 * @example | |
| 11637 * | |
| 11638 * _.deburr('déjà vu'); | |
| 11639 * // => 'deja vu' | |
| 11640 */ | |
| 11641 function deburr(string) { | |
| 11642 string = baseToString(string); | |
| 11643 return string && string.replace(reLatin1, deburrLetter).replace(reComboMark, ''); | |
| 11644 } | |
| 11645 | |
| 11646 /** | |
| 11647 * Checks if `string` ends with the given target string. | |
| 11648 * | |
| 11649 * @static | |
| 11650 * @memberOf _ | |
| 11651 * @category String | |
| 11652 * @param {string} [string=''] The string to search. | |
| 11653 * @param {string} [target] The string to search for. | |
| 11654 * @param {number} [position=string.length] The position to search from. | |
| 11655 * @returns {boolean} Returns `true` if `string` ends with `target`, else `false`. | |
| 11656 * @example | |
| 11657 * | |
| 11658 * _.endsWith('abc', 'c'); | |
| 11659 * // => true | |
| 11660 * | |
| 11661 * _.endsWith('abc', 'b'); | |
| 11662 * // => false | |
| 11663 * | |
| 11664 * _.endsWith('abc', 'b', 2); | |
| 11665 * // => true | |
| 11666 */ | |
| 11667 function endsWith(string, target, position) { | |
| 11668 string = baseToString(string); | |
| 11669 target = (target + ''); | |
| 11670 | |
| 11671 var length = string.length; | |
| 11672 position = position === undefined | |
| 11673 ? length | |
| 11674 : nativeMin(position < 0 ? 0 : (+position || 0), length); | |
| 11675 | |
| 11676 position -= target.length; | |
| 11677 return position >= 0 && string.indexOf(target, position) == position; | |
| 11678 } | |
| 11679 | |
| 11680 /** | |
| 11681 * Converts the characters "&", "<", ">", '"', "'", and "\`", in `string` to | |
| 11682 * their corresponding HTML entities. | |
| 11683 * | |
| 11684 * **Note:** No other characters are escaped. To escape additional characters | |
| 11685 * use a third-party library like [_he_](https://mths.be/he). | |
| 11686 * | |
| 11687 * Though the ">" character is escaped for symmetry, characters like | |
| 11688 * ">" and "/" don't require escaping in HTML and have no special meaning | |
| 11689 * unless they're part of a tag or unquoted attribute value. | |
| 11690 * See [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) | |
| 11691 * (under "semi-related fun fact") for more details. | |
| 11692 * | |
| 11693 * Backticks are escaped because in Internet Explorer < 9, they can break out | |
| 11694 * of attribute values or HTML comments. See [#59](https://html5sec.org/#59), | |
| 11695 * [#102](https://html5sec.org/#102), [#108](https://html5sec.org/#108), and | |
| 11696 * [#133](https://html5sec.org/#133) of the [HTML5 Security Cheatsheet](https://html5sec.org/) | |
| 11697 * for more details. | |
| 11698 * | |
| 11699 * When working with HTML you should always [quote attribute values](http://wonko.com/post/html-escaping) | |
| 11700 * to reduce XSS vectors. | |
| 11701 * | |
| 11702 * @static | |
| 11703 * @memberOf _ | |
| 11704 * @category String | |
| 11705 * @param {string} [string=''] The string to escape. | |
| 11706 * @returns {string} Returns the escaped string. | |
| 11707 * @example | |
| 11708 * | |
| 11709 * _.escape('fred, barney, & pebbles'); | |
| 11710 * // => 'fred, barney, & pebbles' | |
| 11711 */ | |
| 11712 function escape(string) { | |
| 11713 // Reset `lastIndex` because in IE < 9 `String#replace` does not. | |
| 11714 string = baseToString(string); | |
| 11715 return (string && reHasUnescapedHtml.test(string)) | |
| 11716 ? string.replace(reUnescapedHtml, escapeHtmlChar) | |
| 11717 : string; | |
| 11718 } | |
| 11719 | |
| 11720 /** | |
| 11721 * Escapes the `RegExp` special characters "\", "/", "^", "$", ".", "|", "?", | |
| 11722 * "*", "+", "(", ")", "[", "]", "{" and "}" in `string`. | |
| 11723 * | |
| 11724 * @static | |
| 11725 * @memberOf _ | |
| 11726 * @category String | |
| 11727 * @param {string} [string=''] The string to escape. | |
| 11728 * @returns {string} Returns the escaped string. | |
| 11729 * @example | |
| 11730 * | |
| 11731 * _.escapeRegExp('[lodash](https://lodash.com/)'); | |
| 11732 * // => '\[lodash\]\(https:\/\/lodash\.com\/\)' | |
| 11733 */ | |
| 11734 function escapeRegExp(string) { | |
| 11735 string = baseToString(string); | |
| 11736 return (string && reHasRegExpChars.test(string)) | |
| 11737 ? string.replace(reRegExpChars, '\\$&') | |
| 11738 : string; | |
| 11739 } | |
| 11740 | |
| 11741 /** | |
| 11742 * Converts `string` to [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles). | |
| 11743 * | |
| 11744 * @static | |
| 11745 * @memberOf _ | |
| 11746 * @category String | |
| 11747 * @param {string} [string=''] The string to convert. | |
| 11748 * @returns {string} Returns the kebab cased string. | |
| 11749 * @example | |
| 11750 * | |
| 11751 * _.kebabCase('Foo Bar'); | |
| 11752 * // => 'foo-bar' | |
| 11753 * | |
| 11754 * _.kebabCase('fooBar'); | |
| 11755 * // => 'foo-bar' | |
| 11756 * | |
| 11757 * _.kebabCase('__foo_bar__'); | |
| 11758 * // => 'foo-bar' | |
| 11759 */ | |
| 11760 var kebabCase = createCompounder(function(result, word, index) { | |
| 11761 return result + (index ? '-' : '') + word.toLowerCase(); | |
| 11762 }); | |
| 11763 | |
| 11764 /** | |
| 11765 * Pads `string` on the left and right sides if it is shorter than `length`. | |
| 11766 * Padding characters are truncated if they can't be evenly divided by `length`. | |
| 11767 * | |
| 11768 * @static | |
| 11769 * @memberOf _ | |
| 11770 * @category String | |
| 11771 * @param {string} [string=''] The string to pad. | |
| 11772 * @param {number} [length=0] The padding length. | |
| 11773 * @param {string} [chars=' '] The string used as padding. | |
| 11774 * @returns {string} Returns the padded string. | |
| 11775 * @example | |
| 11776 * | |
| 11777 * _.pad('abc', 8); | |
| 11778 * // => ' abc ' | |
| 11779 * | |
| 11780 * _.pad('abc', 8, '_-'); | |
| 11781 * // => '_-abc_-_' | |
| 11782 * | |
| 11783 * _.pad('abc', 3); | |
| 11784 * // => 'abc' | |
| 11785 */ | |
| 11786 function pad(string, length, chars) { | |
| 11787 string = baseToString(string); | |
| 11788 length = +length; | |
| 11789 | |
| 11790 var strLength = string.length; | |
| 11791 if (strLength >= length || !nativeIsFinite(length)) { | |
| 11792 return string; | |
| 11793 } | |
| 11794 var mid = (length - strLength) / 2, | |
| 11795 leftLength = floor(mid), | |
| 11796 rightLength = ceil(mid); | |
| 11797 | |
| 11798 chars = createPadding('', rightLength, chars); | |
| 11799 return chars.slice(0, leftLength) + string + chars; | |
| 11800 } | |
| 11801 | |
| 11802 /** | |
| 11803 * Pads `string` on the left side if it is shorter than `length`. Padding | |
| 11804 * characters are truncated if they exceed `length`. | |
| 11805 * | |
| 11806 * @static | |
| 11807 * @memberOf _ | |
| 11808 * @category String | |
| 11809 * @param {string} [string=''] The string to pad. | |
| 11810 * @param {number} [length=0] The padding length. | |
| 11811 * @param {string} [chars=' '] The string used as padding. | |
| 11812 * @returns {string} Returns the padded string. | |
| 11813 * @example | |
| 11814 * | |
| 11815 * _.padLeft('abc', 6); | |
| 11816 * // => ' abc' | |
| 11817 * | |
| 11818 * _.padLeft('abc', 6, '_-'); | |
| 11819 * // => '_-_abc' | |
| 11820 * | |
| 11821 * _.padLeft('abc', 3); | |
| 11822 * // => 'abc' | |
| 11823 */ | |
| 11824 var padLeft = createPadDir(); | |
| 11825 | |
| 11826 /** | |
| 11827 * Pads `string` on the right side if it is shorter than `length`. Padding | |
| 11828 * characters are truncated if they exceed `length`. | |
| 11829 * | |
| 11830 * @static | |
| 11831 * @memberOf _ | |
| 11832 * @category String | |
| 11833 * @param {string} [string=''] The string to pad. | |
| 11834 * @param {number} [length=0] The padding length. | |
| 11835 * @param {string} [chars=' '] The string used as padding. | |
| 11836 * @returns {string} Returns the padded string. | |
| 11837 * @example | |
| 11838 * | |
| 11839 * _.padRight('abc', 6); | |
| 11840 * // => 'abc ' | |
| 11841 * | |
| 11842 * _.padRight('abc', 6, '_-'); | |
| 11843 * // => 'abc_-_' | |
| 11844 * | |
| 11845 * _.padRight('abc', 3); | |
| 11846 * // => 'abc' | |
| 11847 */ | |
| 11848 var padRight = createPadDir(true); | |
| 11849 | |
| 11850 /** | |
| 11851 * Converts `string` to an integer of the specified radix. If `radix` is | |
| 11852 * `undefined` or `0`, a `radix` of `10` is used unless `value` is a hexadecimal, | |
| 11853 * in which case a `radix` of `16` is used. | |
| 11854 * | |
| 11855 * **Note:** This method aligns with the [ES5 implementation](https://es5.github.io/#E) | |
| 11856 * of `parseInt`. | |
| 11857 * | |
| 11858 * @static | |
| 11859 * @memberOf _ | |
| 11860 * @category String | |
| 11861 * @param {string} string The string to convert. | |
| 11862 * @param {number} [radix] The radix to interpret `value` by. | |
| 11863 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 11864 * @returns {number} Returns the converted integer. | |
| 11865 * @example | |
| 11866 * | |
| 11867 * _.parseInt('08'); | |
| 11868 * // => 8 | |
| 11869 * | |
| 11870 * _.map(['6', '08', '10'], _.parseInt); | |
| 11871 * // => [6, 8, 10] | |
| 11872 */ | |
| 11873 function parseInt(string, radix, guard) { | |
| 11874 if (guard && isIterateeCall(string, radix, guard)) { | |
| 11875 radix = 0; | |
| 11876 } | |
| 11877 return nativeParseInt(string, radix); | |
| 11878 } | |
| 11879 // Fallback for environments with pre-ES5 implementations. | |
| 11880 if (nativeParseInt(whitespace + '08') != 8) { | |
| 11881 parseInt = function(string, radix, guard) { | |
| 11882 // Firefox < 21 and Opera < 15 follow ES3 for `parseInt`. | |
| 11883 // Chrome fails to trim leading <BOM> whitespace characters. | |
| 11884 // See https://code.google.com/p/v8/issues/detail?id=3109 for more details. | |
| 11885 if (guard ? isIterateeCall(string, radix, guard) : radix == null) { | |
| 11886 radix = 0; | |
| 11887 } else if (radix) { | |
| 11888 radix = +radix; | |
| 11889 } | |
| 11890 string = trim(string); | |
| 11891 return nativeParseInt(string, radix || (reHasHexPrefix.test(string) ? 16 : 10)); | |
| 11892 }; | |
| 11893 } | |
| 11894 | |
| 11895 /** | |
| 11896 * Repeats the given string `n` times. | |
| 11897 * | |
| 11898 * @static | |
| 11899 * @memberOf _ | |
| 11900 * @category String | |
| 11901 * @param {string} [string=''] The string to repeat. | |
| 11902 * @param {number} [n=0] The number of times to repeat the string. | |
| 11903 * @returns {string} Returns the repeated string. | |
| 11904 * @example | |
| 11905 * | |
| 11906 * _.repeat('*', 3); | |
| 11907 * // => '***' | |
| 11908 * | |
| 11909 * _.repeat('abc', 2); | |
| 11910 * // => 'abcabc' | |
| 11911 * | |
| 11912 * _.repeat('abc', 0); | |
| 11913 * // => '' | |
| 11914 */ | |
| 11915 function repeat(string, n) { | |
| 11916 var result = ''; | |
| 11917 string = baseToString(string); | |
| 11918 n = +n; | |
| 11919 if (n < 1 || !string || !nativeIsFinite(n)) { | |
| 11920 return result; | |
| 11921 } | |
| 11922 // Leverage the exponentiation by squaring algorithm for a faster repeat. | |
| 11923 // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. | |
| 11924 do { | |
| 11925 if (n % 2) { | |
| 11926 result += string; | |
| 11927 } | |
| 11928 n = floor(n / 2); | |
| 11929 string += string; | |
| 11930 } while (n); | |
| 11931 | |
| 11932 return result; | |
| 11933 } | |
| 11934 | |
| 11935 /** | |
| 11936 * Converts `string` to [snake case](https://en.wikipedia.org/wiki/Snake_case). | |
| 11937 * | |
| 11938 * @static | |
| 11939 * @memberOf _ | |
| 11940 * @category String | |
| 11941 * @param {string} [string=''] The string to convert. | |
| 11942 * @returns {string} Returns the snake cased string. | |
| 11943 * @example | |
| 11944 * | |
| 11945 * _.snakeCase('Foo Bar'); | |
| 11946 * // => 'foo_bar' | |
| 11947 * | |
| 11948 * _.snakeCase('fooBar'); | |
| 11949 * // => 'foo_bar' | |
| 11950 * | |
| 11951 * _.snakeCase('--foo-bar'); | |
| 11952 * // => 'foo_bar' | |
| 11953 */ | |
| 11954 var snakeCase = createCompounder(function(result, word, index) { | |
| 11955 return result + (index ? '_' : '') + word.toLowerCase(); | |
| 11956 }); | |
| 11957 | |
| 11958 /** | |
| 11959 * Converts `string` to [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage). | |
| 11960 * | |
| 11961 * @static | |
| 11962 * @memberOf _ | |
| 11963 * @category String | |
| 11964 * @param {string} [string=''] The string to convert. | |
| 11965 * @returns {string} Returns the start cased string. | |
| 11966 * @example | |
| 11967 * | |
| 11968 * _.startCase('--foo-bar'); | |
| 11969 * // => 'Foo Bar' | |
| 11970 * | |
| 11971 * _.startCase('fooBar'); | |
| 11972 * // => 'Foo Bar' | |
| 11973 * | |
| 11974 * _.startCase('__foo_bar__'); | |
| 11975 * // => 'Foo Bar' | |
| 11976 */ | |
| 11977 var startCase = createCompounder(function(result, word, index) { | |
| 11978 return result + (index ? ' ' : '') + (word.charAt(0).toUpperCase() + word.slice(1)); | |
| 11979 }); | |
| 11980 | |
| 11981 /** | |
| 11982 * Checks if `string` starts with the given target string. | |
| 11983 * | |
| 11984 * @static | |
| 11985 * @memberOf _ | |
| 11986 * @category String | |
| 11987 * @param {string} [string=''] The string to search. | |
| 11988 * @param {string} [target] The string to search for. | |
| 11989 * @param {number} [position=0] The position to search from. | |
| 11990 * @returns {boolean} Returns `true` if `string` starts with `target`, else `false`. | |
| 11991 * @example | |
| 11992 * | |
| 11993 * _.startsWith('abc', 'a'); | |
| 11994 * // => true | |
| 11995 * | |
| 11996 * _.startsWith('abc', 'b'); | |
| 11997 * // => false | |
| 11998 * | |
| 11999 * _.startsWith('abc', 'b', 1); | |
| 12000 * // => true | |
| 12001 */ | |
| 12002 function startsWith(string, target, position) { | |
| 12003 string = baseToString(string); | |
| 12004 position = position == null | |
| 12005 ? 0 | |
| 12006 : nativeMin(position < 0 ? 0 : (+position || 0), string.length); | |
| 12007 | |
| 12008 return string.lastIndexOf(target, position) == position; | |
| 12009 } | |
| 12010 | |
| 12011 /** | |
| 12012 * Creates a compiled template function that can interpolate data properties | |
| 12013 * in "interpolate" delimiters, HTML-escape interpolated data properties in | |
| 12014 * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data | |
| 12015 * properties may be accessed as free variables in the template. If a setting | |
| 12016 * object is provided it takes precedence over `_.templateSettings` values. | |
| 12017 * | |
| 12018 * **Note:** In the development build `_.template` utilizes | |
| 12019 * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) | |
| 12020 * for easier debugging. | |
| 12021 * | |
| 12022 * For more information on precompiling templates see | |
| 12023 * [lodash's custom builds documentation](https://lodash.com/custom-builds). | |
| 12024 * | |
| 12025 * For more information on Chrome extension sandboxes see | |
| 12026 * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). | |
| 12027 * | |
| 12028 * @static | |
| 12029 * @memberOf _ | |
| 12030 * @category String | |
| 12031 * @param {string} [string=''] The template string. | |
| 12032 * @param {Object} [options] The options object. | |
| 12033 * @param {RegExp} [options.escape] The HTML "escape" delimiter. | |
| 12034 * @param {RegExp} [options.evaluate] The "evaluate" delimiter. | |
| 12035 * @param {Object} [options.imports] An object to import into the template as free variables. | |
| 12036 * @param {RegExp} [options.interpolate] The "interpolate" delimiter. | |
| 12037 * @param {string} [options.sourceURL] The sourceURL of the template's compiled source. | |
| 12038 * @param {string} [options.variable] The data object variable name. | |
| 12039 * @param- {Object} [otherOptions] Enables the legacy `options` param signature. | |
| 12040 * @returns {Function} Returns the compiled template function. | |
| 12041 * @example | |
| 12042 * | |
| 12043 * // using the "interpolate" delimiter to create a compiled template | |
| 12044 * var compiled = _.template('hello <%= user %>!'); | |
| 12045 * compiled({ 'user': 'fred' }); | |
| 12046 * // => 'hello fred!' | |
| 12047 * | |
| 12048 * // using the HTML "escape" delimiter to escape data property values | |
| 12049 * var compiled = _.template('<b><%- value %></b>'); | |
| 12050 * compiled({ 'value': '<script>' }); | |
| 12051 * // => '<b><script></b>' | |
| 12052 * | |
| 12053 * // using the "evaluate" delimiter to execute JavaScript and generate HTML | |
| 12054 * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>'); | |
| 12055 * compiled({ 'users': ['fred', 'barney'] }); | |
| 12056 * // => '<li>fred</li><li>barney</li>' | |
| 12057 * | |
| 12058 * // using the internal `print` function in "evaluate" delimiters | |
| 12059 * var compiled = _.template('<% print("hello " + user); %>!'); | |
| 12060 * compiled({ 'user': 'barney' }); | |
| 12061 * // => 'hello barney!' | |
| 12062 * | |
| 12063 * // using the ES delimiter as an alternative to the default "interpolate" delimiter | |
| 12064 * var compiled = _.template('hello ${ user }!'); | |
| 12065 * compiled({ 'user': 'pebbles' }); | |
| 12066 * // => 'hello pebbles!' | |
| 12067 * | |
| 12068 * // using custom template delimiters | |
| 12069 * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g; | |
| 12070 * var compiled = _.template('hello {{ user }}!'); | |
| 12071 * compiled({ 'user': 'mustache' }); | |
| 12072 * // => 'hello mustache!' | |
| 12073 * | |
| 12074 * // using backslashes to treat delimiters as plain text | |
| 12075 * var compiled = _.template('<%= "\\<%- value %\\>" %>'); | |
| 12076 * compiled({ 'value': 'ignored' }); | |
| 12077 * // => '<%- value %>' | |
| 12078 * | |
| 12079 * // using the `imports` option to import `jQuery` as `jq` | |
| 12080 * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>'; | |
| 12081 * var compiled = _.template(text, { 'imports': { 'jq': jQuery } }); | |
| 12082 * compiled({ 'users': ['fred', 'barney'] }); | |
| 12083 * // => '<li>fred</li><li>barney</li>' | |
| 12084 * | |
| 12085 * // using the `sourceURL` option to specify a custom sourceURL for the template | |
| 12086 * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' }); | |
| 12087 * compiled(data); | |
| 12088 * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector | |
| 12089 * | |
| 12090 * // using the `variable` option to ensure a with-statement isn't used in the compiled template | |
| 12091 * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' }); | |
| 12092 * compiled.source; | |
| 12093 * // => function(data) { | |
| 12094 * // var __t, __p = ''; | |
| 12095 * // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!'; | |
| 12096 * // return __p; | |
| 12097 * // } | |
| 12098 * | |
| 12099 * // using the `source` property to inline compiled templates for meaningful | |
| 12100 * // line numbers in error messages and a stack trace | |
| 12101 * fs.writeFileSync(path.join(cwd, 'jst.js'), '\ | |
| 12102 * var JST = {\ | |
| 12103 * "main": ' + _.template(mainText).source + '\ | |
| 12104 * };\ | |
| 12105 * '); | |
| 12106 */ | |
| 12107 function template(string, options, otherOptions) { | |
| 12108 // Based on John Resig's `tmpl` implementation (http://ejohn.org/blog/javascript-micro-templating/) | |
| 12109 // and Laura Doktorova's doT.js (https://github.com/olado/doT). | |
| 12110 var settings = lodash.templateSettings; | |
| 12111 | |
| 12112 if (otherOptions && isIterateeCall(string, options, otherOptions)) { | |
| 12113 options = otherOptions = null; | |
| 12114 } | |
| 12115 string = baseToString(string); | |
| 12116 options = assignWith(baseAssign({}, otherOptions || options), settings, assignOwnDefaults); | |
| 12117 | |
| 12118 var imports = assignWith(baseAssign({}, options.imports), settings.imports, assignOwnDefaults), | |
| 12119 importsKeys = keys(imports), | |
| 12120 importsValues = baseValues(imports, importsKeys); | |
| 12121 | |
| 12122 var isEscaping, | |
| 12123 isEvaluating, | |
| 12124 index = 0, | |
| 12125 interpolate = options.interpolate || reNoMatch, | |
| 12126 source = "__p += '"; | |
| 12127 | |
| 12128 // Compile the regexp to match each delimiter. | |
| 12129 var reDelimiters = RegExp( | |
| 12130 (options.escape || reNoMatch).source + '|' + | |
| 12131 interpolate.source + '|' + | |
| 12132 (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + | |
| 12133 (options.evaluate || reNoMatch).source + '|$' | |
| 12134 , 'g'); | |
| 12135 | |
| 12136 // Use a sourceURL for easier debugging. | |
| 12137 var sourceURL = '//# sourceURL=' + | |
| 12138 ('sourceURL' in options | |
| 12139 ? options.sourceURL | |
| 12140 : ('lodash.templateSources[' + (++templateCounter) + ']') | |
| 12141 ) + '\n'; | |
| 12142 | |
| 12143 string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) { | |
| 12144 interpolateValue || (interpolateValue = esTemplateValue); | |
| 12145 | |
| 12146 // Escape characters that can't be included in string literals. | |
| 12147 source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar); | |
| 12148 | |
| 12149 // Replace delimiters with snippets. | |
| 12150 if (escapeValue) { | |
| 12151 isEscaping = true; | |
| 12152 source += "' +\n__e(" + escapeValue + ") +\n'"; | |
| 12153 } | |
| 12154 if (evaluateValue) { | |
| 12155 isEvaluating = true; | |
| 12156 source += "';\n" + evaluateValue + ";\n__p += '"; | |
| 12157 } | |
| 12158 if (interpolateValue) { | |
| 12159 source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'"; | |
| 12160 } | |
| 12161 index = offset + match.length; | |
| 12162 | |
| 12163 // The JS engine embedded in Adobe products requires returning the `match` | |
| 12164 // string in order to produce the correct `offset` value. | |
| 12165 return match; | |
| 12166 }); | |
| 12167 | |
| 12168 source += "';\n"; | |
| 12169 | |
| 12170 // If `variable` is not specified wrap a with-statement around the generated | |
| 12171 // code to add the data object to the top of the scope chain. | |
| 12172 var variable = options.variable; | |
| 12173 if (!variable) { | |
| 12174 source = 'with (obj) {\n' + source + '\n}\n'; | |
| 12175 } | |
| 12176 // Cleanup code by stripping empty strings. | |
| 12177 source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source) | |
| 12178 .replace(reEmptyStringMiddle, '$1') | |
| 12179 .replace(reEmptyStringTrailing, '$1;'); | |
| 12180 | |
| 12181 // Frame code as the function body. | |
| 12182 source = 'function(' + (variable || 'obj') + ') {\n' + | |
| 12183 (variable | |
| 12184 ? '' | |
| 12185 : 'obj || (obj = {});\n' | |
| 12186 ) + | |
| 12187 "var __t, __p = ''" + | |
| 12188 (isEscaping | |
| 12189 ? ', __e = _.escape' | |
| 12190 : '' | |
| 12191 ) + | |
| 12192 (isEvaluating | |
| 12193 ? ', __j = Array.prototype.join;\n' + | |
| 12194 "function print() { __p += __j.call(arguments, '') }\n" | |
| 12195 : ';\n' | |
| 12196 ) + | |
| 12197 source + | |
| 12198 'return __p\n}'; | |
| 12199 | |
| 12200 var result = attempt(function() { | |
| 12201 return Function(importsKeys, sourceURL + 'return ' + source).apply(undefined, importsValues); | |
| 12202 }); | |
| 12203 | |
| 12204 // Provide the compiled function's source by its `toString` method or | |
| 12205 // the `source` property as a convenience for inlining compiled templates. | |
| 12206 result.source = source; | |
| 12207 if (isError(result)) { | |
| 12208 throw result; | |
| 12209 } | |
| 12210 return result; | |
| 12211 } | |
| 12212 | |
| 12213 /** | |
| 12214 * Removes leading and trailing whitespace or specified characters from `string`. | |
| 12215 * | |
| 12216 * @static | |
| 12217 * @memberOf _ | |
| 12218 * @category String | |
| 12219 * @param {string} [string=''] The string to trim. | |
| 12220 * @param {string} [chars=whitespace] The characters to trim. | |
| 12221 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 12222 * @returns {string} Returns the trimmed string. | |
| 12223 * @example | |
| 12224 * | |
| 12225 * _.trim(' abc '); | |
| 12226 * // => 'abc' | |
| 12227 * | |
| 12228 * _.trim('-_-abc-_-', '_-'); | |
| 12229 * // => 'abc' | |
| 12230 * | |
| 12231 * _.map([' foo ', ' bar '], _.trim); | |
| 12232 * // => ['foo', 'bar'] | |
| 12233 */ | |
| 12234 function trim(string, chars, guard) { | |
| 12235 var value = string; | |
| 12236 string = baseToString(string); | |
| 12237 if (!string) { | |
| 12238 return string; | |
| 12239 } | |
| 12240 if (guard ? isIterateeCall(value, chars, guard) : chars == null) { | |
| 12241 return string.slice(trimmedLeftIndex(string), trimmedRightIndex(string) + 1); | |
| 12242 } | |
| 12243 chars = (chars + ''); | |
| 12244 return string.slice(charsLeftIndex(string, chars), charsRightIndex(string, chars) + 1); | |
| 12245 } | |
| 12246 | |
| 12247 /** | |
| 12248 * Removes leading whitespace or specified characters from `string`. | |
| 12249 * | |
| 12250 * @static | |
| 12251 * @memberOf _ | |
| 12252 * @category String | |
| 12253 * @param {string} [string=''] The string to trim. | |
| 12254 * @param {string} [chars=whitespace] The characters to trim. | |
| 12255 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 12256 * @returns {string} Returns the trimmed string. | |
| 12257 * @example | |
| 12258 * | |
| 12259 * _.trimLeft(' abc '); | |
| 12260 * // => 'abc ' | |
| 12261 * | |
| 12262 * _.trimLeft('-_-abc-_-', '_-'); | |
| 12263 * // => 'abc-_-' | |
| 12264 */ | |
| 12265 function trimLeft(string, chars, guard) { | |
| 12266 var value = string; | |
| 12267 string = baseToString(string); | |
| 12268 if (!string) { | |
| 12269 return string; | |
| 12270 } | |
| 12271 if (guard ? isIterateeCall(value, chars, guard) : chars == null) { | |
| 12272 return string.slice(trimmedLeftIndex(string)); | |
| 12273 } | |
| 12274 return string.slice(charsLeftIndex(string, (chars + ''))); | |
| 12275 } | |
| 12276 | |
| 12277 /** | |
| 12278 * Removes trailing whitespace or specified characters from `string`. | |
| 12279 * | |
| 12280 * @static | |
| 12281 * @memberOf _ | |
| 12282 * @category String | |
| 12283 * @param {string} [string=''] The string to trim. | |
| 12284 * @param {string} [chars=whitespace] The characters to trim. | |
| 12285 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 12286 * @returns {string} Returns the trimmed string. | |
| 12287 * @example | |
| 12288 * | |
| 12289 * _.trimRight(' abc '); | |
| 12290 * // => ' abc' | |
| 12291 * | |
| 12292 * _.trimRight('-_-abc-_-', '_-'); | |
| 12293 * // => '-_-abc' | |
| 12294 */ | |
| 12295 function trimRight(string, chars, guard) { | |
| 12296 var value = string; | |
| 12297 string = baseToString(string); | |
| 12298 if (!string) { | |
| 12299 return string; | |
| 12300 } | |
| 12301 if (guard ? isIterateeCall(value, chars, guard) : chars == null) { | |
| 12302 return string.slice(0, trimmedRightIndex(string) + 1); | |
| 12303 } | |
| 12304 return string.slice(0, charsRightIndex(string, (chars + '')) + 1); | |
| 12305 } | |
| 12306 | |
| 12307 /** | |
| 12308 * Truncates `string` if it is longer than the given maximum string length. | |
| 12309 * The last characters of the truncated string are replaced with the omission | |
| 12310 * string which defaults to "...". | |
| 12311 * | |
| 12312 * @static | |
| 12313 * @memberOf _ | |
| 12314 * @category String | |
| 12315 * @param {string} [string=''] The string to truncate. | |
| 12316 * @param {Object|number} [options] The options object or maximum string length. | |
| 12317 * @param {number} [options.length=30] The maximum string length. | |
| 12318 * @param {string} [options.omission='...'] The string to indicate text is omitted. | |
| 12319 * @param {RegExp|string} [options.separator] The separator pattern to truncate to. | |
| 12320 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 12321 * @returns {string} Returns the truncated string. | |
| 12322 * @example | |
| 12323 * | |
| 12324 * _.trunc('hi-diddly-ho there, neighborino'); | |
| 12325 * // => 'hi-diddly-ho there, neighbo...' | |
| 12326 * | |
| 12327 * _.trunc('hi-diddly-ho there, neighborino', 24); | |
| 12328 * // => 'hi-diddly-ho there, n...' | |
| 12329 * | |
| 12330 * _.trunc('hi-diddly-ho there, neighborino', { | |
| 12331 * 'length': 24, | |
| 12332 * 'separator': ' ' | |
| 12333 * }); | |
| 12334 * // => 'hi-diddly-ho there,...' | |
| 12335 * | |
| 12336 * _.trunc('hi-diddly-ho there, neighborino', { | |
| 12337 * 'length': 24, | |
| 12338 * 'separator': /,? +/ | |
| 12339 * }); | |
| 12340 * // => 'hi-diddly-ho there...' | |
| 12341 * | |
| 12342 * _.trunc('hi-diddly-ho there, neighborino', { | |
| 12343 * 'omission': ' [...]' | |
| 12344 * }); | |
| 12345 * // => 'hi-diddly-ho there, neig [...]' | |
| 12346 */ | |
| 12347 function trunc(string, options, guard) { | |
| 12348 if (guard && isIterateeCall(string, options, guard)) { | |
| 12349 options = null; | |
| 12350 } | |
| 12351 var length = DEFAULT_TRUNC_LENGTH, | |
| 12352 omission = DEFAULT_TRUNC_OMISSION; | |
| 12353 | |
| 12354 if (options != null) { | |
| 12355 if (isObject(options)) { | |
| 12356 var separator = 'separator' in options ? options.separator : separator; | |
| 12357 length = 'length' in options ? (+options.length || 0) : length; | |
| 12358 omission = 'omission' in options ? baseToString(options.omission) : omission; | |
| 12359 } else { | |
| 12360 length = +options || 0; | |
| 12361 } | |
| 12362 } | |
| 12363 string = baseToString(string); | |
| 12364 if (length >= string.length) { | |
| 12365 return string; | |
| 12366 } | |
| 12367 var end = length - omission.length; | |
| 12368 if (end < 1) { | |
| 12369 return omission; | |
| 12370 } | |
| 12371 var result = string.slice(0, end); | |
| 12372 if (separator == null) { | |
| 12373 return result + omission; | |
| 12374 } | |
| 12375 if (isRegExp(separator)) { | |
| 12376 if (string.slice(end).search(separator)) { | |
| 12377 var match, | |
| 12378 newEnd, | |
| 12379 substring = string.slice(0, end); | |
| 12380 | |
| 12381 if (!separator.global) { | |
| 12382 separator = RegExp(separator.source, (reFlags.exec(separator) || '') + 'g'); | |
| 12383 } | |
| 12384 separator.lastIndex = 0; | |
| 12385 while ((match = separator.exec(substring))) { | |
| 12386 newEnd = match.index; | |
| 12387 } | |
| 12388 result = result.slice(0, newEnd == null ? end : newEnd); | |
| 12389 } | |
| 12390 } else if (string.indexOf(separator, end) != end) { | |
| 12391 var index = result.lastIndexOf(separator); | |
| 12392 if (index > -1) { | |
| 12393 result = result.slice(0, index); | |
| 12394 } | |
| 12395 } | |
| 12396 return result + omission; | |
| 12397 } | |
| 12398 | |
| 12399 /** | |
| 12400 * The inverse of `_.escape`; this method converts the HTML entities | |
| 12401 * `&`, `<`, `>`, `"`, `'`, and ``` in `string` to their | |
| 12402 * corresponding characters. | |
| 12403 * | |
| 12404 * **Note:** No other HTML entities are unescaped. To unescape additional HTML | |
| 12405 * entities use a third-party library like [_he_](https://mths.be/he). | |
| 12406 * | |
| 12407 * @static | |
| 12408 * @memberOf _ | |
| 12409 * @category String | |
| 12410 * @param {string} [string=''] The string to unescape. | |
| 12411 * @returns {string} Returns the unescaped string. | |
| 12412 * @example | |
| 12413 * | |
| 12414 * _.unescape('fred, barney, & pebbles'); | |
| 12415 * // => 'fred, barney, & pebbles' | |
| 12416 */ | |
| 12417 function unescape(string) { | |
| 12418 string = baseToString(string); | |
| 12419 return (string && reHasEscapedHtml.test(string)) | |
| 12420 ? string.replace(reEscapedHtml, unescapeHtmlChar) | |
| 12421 : string; | |
| 12422 } | |
| 12423 | |
| 12424 /** | |
| 12425 * Splits `string` into an array of its words. | |
| 12426 * | |
| 12427 * @static | |
| 12428 * @memberOf _ | |
| 12429 * @category String | |
| 12430 * @param {string} [string=''] The string to inspect. | |
| 12431 * @param {RegExp|string} [pattern] The pattern to match words. | |
| 12432 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 12433 * @returns {Array} Returns the words of `string`. | |
| 12434 * @example | |
| 12435 * | |
| 12436 * _.words('fred, barney, & pebbles'); | |
| 12437 * // => ['fred', 'barney', 'pebbles'] | |
| 12438 * | |
| 12439 * _.words('fred, barney, & pebbles', /[^, ]+/g); | |
| 12440 * // => ['fred', 'barney', '&', 'pebbles'] | |
| 12441 */ | |
| 12442 function words(string, pattern, guard) { | |
| 12443 if (guard && isIterateeCall(string, pattern, guard)) { | |
| 12444 pattern = null; | |
| 12445 } | |
| 12446 string = baseToString(string); | |
| 12447 return string.match(pattern || reWords) || []; | |
| 12448 } | |
| 12449 | |
| 12450 /*------------------------------------------------------------------------*/ | |
| 12451 | |
| 12452 /** | |
| 12453 * Attempts to invoke `func`, returning either the result or the caught error | |
| 12454 * object. Any additional arguments are provided to `func` when it is invoked. | |
| 12455 * | |
| 12456 * @static | |
| 12457 * @memberOf _ | |
| 12458 * @category Utility | |
| 12459 * @param {Function} func The function to attempt. | |
| 12460 * @returns {*} Returns the `func` result or error object. | |
| 12461 * @example | |
| 12462 * | |
| 12463 * // avoid throwing errors for invalid selectors | |
| 12464 * var elements = _.attempt(function(selector) { | |
| 12465 * return document.querySelectorAll(selector); | |
| 12466 * }, '>_>'); | |
| 12467 * | |
| 12468 * if (_.isError(elements)) { | |
| 12469 * elements = []; | |
| 12470 * } | |
| 12471 */ | |
| 12472 var attempt = restParam(function(func, args) { | |
| 12473 try { | |
| 12474 return func.apply(undefined, args); | |
| 12475 } catch(e) { | |
| 12476 return isError(e) ? e : new Error(e); | |
| 12477 } | |
| 12478 }); | |
| 12479 | |
| 12480 /** | |
| 12481 * Creates a function that invokes `func` with the `this` binding of `thisArg` | |
| 12482 * and arguments of the created function. If `func` is a property name the | |
| 12483 * created callback returns the property value for a given element. If `func` | |
| 12484 * is an object the created callback returns `true` for elements that contain | |
| 12485 * the equivalent object properties, otherwise it returns `false`. | |
| 12486 * | |
| 12487 * @static | |
| 12488 * @memberOf _ | |
| 12489 * @alias iteratee | |
| 12490 * @category Utility | |
| 12491 * @param {*} [func=_.identity] The value to convert to a callback. | |
| 12492 * @param {*} [thisArg] The `this` binding of `func`. | |
| 12493 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. | |
| 12494 * @returns {Function} Returns the callback. | |
| 12495 * @example | |
| 12496 * | |
| 12497 * var users = [ | |
| 12498 * { 'user': 'barney', 'age': 36 }, | |
| 12499 * { 'user': 'fred', 'age': 40 } | |
| 12500 * ]; | |
| 12501 * | |
| 12502 * // wrap to create custom callback shorthands | |
| 12503 * _.callback = _.wrap(_.callback, function(callback, func, thisArg) { | |
| 12504 * var match = /^(.+?)__([gl]t)(.+)$/.exec(func); | |
| 12505 * if (!match) { | |
| 12506 * return callback(func, thisArg); | |
| 12507 * } | |
| 12508 * return function(object) { | |
| 12509 * return match[2] == 'gt' | |
| 12510 * ? object[match[1]] > match[3] | |
| 12511 * : object[match[1]] < match[3]; | |
| 12512 * }; | |
| 12513 * }); | |
| 12514 * | |
| 12515 * _.filter(users, 'age__gt36'); | |
| 12516 * // => [{ 'user': 'fred', 'age': 40 }] | |
| 12517 */ | |
| 12518 function callback(func, thisArg, guard) { | |
| 12519 if (guard && isIterateeCall(func, thisArg, guard)) { | |
| 12520 thisArg = null; | |
| 12521 } | |
| 12522 return baseCallback(func, thisArg); | |
| 12523 } | |
| 12524 | |
| 12525 /** | |
| 12526 * Creates a function that returns `value`. | |
| 12527 * | |
| 12528 * @static | |
| 12529 * @memberOf _ | |
| 12530 * @category Utility | |
| 12531 * @param {*} value The value to return from the new function. | |
| 12532 * @returns {Function} Returns the new function. | |
| 12533 * @example | |
| 12534 * | |
| 12535 * var object = { 'user': 'fred' }; | |
| 12536 * var getter = _.constant(object); | |
| 12537 * | |
| 12538 * getter() === object; | |
| 12539 * // => true | |
| 12540 */ | |
| 12541 function constant(value) { | |
| 12542 return function() { | |
| 12543 return value; | |
| 12544 }; | |
| 12545 } | |
| 12546 | |
| 12547 /** | |
| 12548 * This method returns the first argument provided to it. | |
| 12549 * | |
| 12550 * @static | |
| 12551 * @memberOf _ | |
| 12552 * @category Utility | |
| 12553 * @param {*} value Any value. | |
| 12554 * @returns {*} Returns `value`. | |
| 12555 * @example | |
| 12556 * | |
| 12557 * var object = { 'user': 'fred' }; | |
| 12558 * | |
| 12559 * _.identity(object) === object; | |
| 12560 * // => true | |
| 12561 */ | |
| 12562 function identity(value) { | |
| 12563 return value; | |
| 12564 } | |
| 12565 | |
| 12566 /** | |
| 12567 * Creates a function which performs a deep comparison between a given object | |
| 12568 * and `source`, returning `true` if the given object has equivalent property | |
| 12569 * values, else `false`. | |
| 12570 * | |
| 12571 * **Note:** This method supports comparing arrays, booleans, `Date` objects, | |
| 12572 * numbers, `Object` objects, regexes, and strings. Objects are compared by | |
| 12573 * their own, not inherited, enumerable properties. For comparing a single | |
| 12574 * own or inherited property value see `_.matchesProperty`. | |
| 12575 * | |
| 12576 * @static | |
| 12577 * @memberOf _ | |
| 12578 * @category Utility | |
| 12579 * @param {Object} source The object of property values to match. | |
| 12580 * @returns {Function} Returns the new function. | |
| 12581 * @example | |
| 12582 * | |
| 12583 * var users = [ | |
| 12584 * { 'user': 'barney', 'age': 36, 'active': true }, | |
| 12585 * { 'user': 'fred', 'age': 40, 'active': false } | |
| 12586 * ]; | |
| 12587 * | |
| 12588 * _.filter(users, _.matches({ 'age': 40, 'active': false })); | |
| 12589 * // => [{ 'user': 'fred', 'age': 40, 'active': false }] | |
| 12590 */ | |
| 12591 function matches(source) { | |
| 12592 return baseMatches(baseClone(source, true)); | |
| 12593 } | |
| 12594 | |
| 12595 /** | |
| 12596 * Creates a function which compares the property value of `path` on a given | |
| 12597 * object to `value`. | |
| 12598 * | |
| 12599 * **Note:** This method supports comparing arrays, booleans, `Date` objects, | |
| 12600 * numbers, `Object` objects, regexes, and strings. Objects are compared by | |
| 12601 * their own, not inherited, enumerable properties. | |
| 12602 * | |
| 12603 * @static | |
| 12604 * @memberOf _ | |
| 12605 * @category Utility | |
| 12606 * @param {Array|string} path The path of the property to get. | |
| 12607 * @param {*} value The value to compare. | |
| 12608 * @returns {Function} Returns the new function. | |
| 12609 * @example | |
| 12610 * | |
| 12611 * var users = [ | |
| 12612 * { 'user': 'barney' }, | |
| 12613 * { 'user': 'fred' } | |
| 12614 * ]; | |
| 12615 * | |
| 12616 * _.find(users, _.matchesProperty('user', 'fred')); | |
| 12617 * // => { 'user': 'fred' } | |
| 12618 */ | |
| 12619 function matchesProperty(path, value) { | |
| 12620 return baseMatchesProperty(path, baseClone(value, true)); | |
| 12621 } | |
| 12622 | |
| 12623 /** | |
| 12624 * Creates a function which invokes the method at `path` on a given object. | |
| 12625 * | |
| 12626 * @static | |
| 12627 * @memberOf _ | |
| 12628 * @category Utility | |
| 12629 * @param {Array|string} path The path of the method to invoke. | |
| 12630 * @returns {Function} Returns the new function. | |
| 12631 * @example | |
| 12632 * | |
| 12633 * var objects = [ | |
| 12634 * { 'a': { 'b': { 'c': _.constant(2) } } }, | |
| 12635 * { 'a': { 'b': { 'c': _.constant(1) } } } | |
| 12636 * ]; | |
| 12637 * | |
| 12638 * _.map(objects, _.method('a.b.c')); | |
| 12639 * // => [2, 1] | |
| 12640 * | |
| 12641 * _.invoke(_.sortBy(objects, _.method(['a', 'b', 'c'])), 'a.b.c'); | |
| 12642 * // => [1, 2] | |
| 12643 */ | |
| 12644 var method = restParam(function(path, args) { | |
| 12645 return function(object) { | |
| 12646 return invokePath(object, path, args); | |
| 12647 } | |
| 12648 }); | |
| 12649 | |
| 12650 /** | |
| 12651 * The opposite of `_.method`; this method creates a function which invokes | |
| 12652 * the method at a given path on `object`. | |
| 12653 * | |
| 12654 * @static | |
| 12655 * @memberOf _ | |
| 12656 * @category Utility | |
| 12657 * @param {Object} object The object to query. | |
| 12658 * @returns {Function} Returns the new function. | |
| 12659 * @example | |
| 12660 * | |
| 12661 * var array = _.times(3, _.constant), | |
| 12662 * object = { 'a': array, 'b': array, 'c': array }; | |
| 12663 * | |
| 12664 * _.map(['a[2]', 'c[0]'], _.methodOf(object)); | |
| 12665 * // => [2, 0] | |
| 12666 * | |
| 12667 * _.map([['a', '2'], ['c', '0']], _.methodOf(object)); | |
| 12668 * // => [2, 0] | |
| 12669 */ | |
| 12670 var methodOf = restParam(function(object, args) { | |
| 12671 return function(path) { | |
| 12672 return invokePath(object, path, args); | |
| 12673 }; | |
| 12674 }); | |
| 12675 | |
| 12676 /** | |
| 12677 * Adds all own enumerable function properties of a source object to the | |
| 12678 * destination object. If `object` is a function then methods are added to | |
| 12679 * its prototype as well. | |
| 12680 * | |
| 12681 * **Note:** Use `_.runInContext` to create a pristine `lodash` function to | |
| 12682 * avoid conflicts caused by modifying the original. | |
| 12683 * | |
| 12684 * @static | |
| 12685 * @memberOf _ | |
| 12686 * @category Utility | |
| 12687 * @param {Function|Object} [object=lodash] The destination object. | |
| 12688 * @param {Object} source The object of functions to add. | |
| 12689 * @param {Object} [options] The options object. | |
| 12690 * @param {boolean} [options.chain=true] Specify whether the functions added | |
| 12691 * are chainable. | |
| 12692 * @returns {Function|Object} Returns `object`. | |
| 12693 * @example | |
| 12694 * | |
| 12695 * function vowels(string) { | |
| 12696 * return _.filter(string, function(v) { | |
| 12697 * return /[aeiou]/i.test(v); | |
| 12698 * }); | |
| 12699 * } | |
| 12700 * | |
| 12701 * // use `_.runInContext` to avoid conflicts (esp. in Node.js) | |
| 12702 * var _ = require('lodash').runInContext(); | |
| 12703 * | |
| 12704 * _.mixin({ 'vowels': vowels }); | |
| 12705 * _.vowels('fred'); | |
| 12706 * // => ['e'] | |
| 12707 * | |
| 12708 * _('fred').vowels().value(); | |
| 12709 * // => ['e'] | |
| 12710 * | |
| 12711 * _.mixin({ 'vowels': vowels }, { 'chain': false }); | |
| 12712 * _('fred').vowels(); | |
| 12713 * // => ['e'] | |
| 12714 */ | |
| 12715 function mixin(object, source, options) { | |
| 12716 if (options == null) { | |
| 12717 var isObj = isObject(source), | |
| 12718 props = isObj && keys(source), | |
| 12719 methodNames = props && props.length && baseFunctions(source, props); | |
| 12720 | |
| 12721 if (!(methodNames ? methodNames.length : isObj)) { | |
| 12722 methodNames = false; | |
| 12723 options = source; | |
| 12724 source = object; | |
| 12725 object = this; | |
| 12726 } | |
| 12727 } | |
| 12728 if (!methodNames) { | |
| 12729 methodNames = baseFunctions(source, keys(source)); | |
| 12730 } | |
| 12731 var chain = true, | |
| 12732 index = -1, | |
| 12733 isFunc = isFunction(object), | |
| 12734 length = methodNames.length; | |
| 12735 | |
| 12736 if (options === false) { | |
| 12737 chain = false; | |
| 12738 } else if (isObject(options) && 'chain' in options) { | |
| 12739 chain = options.chain; | |
| 12740 } | |
| 12741 while (++index < length) { | |
| 12742 var methodName = methodNames[index], | |
| 12743 func = source[methodName]; | |
| 12744 | |
| 12745 object[methodName] = func; | |
| 12746 if (isFunc) { | |
| 12747 object.prototype[methodName] = (function(func) { | |
| 12748 return function() { | |
| 12749 var chainAll = this.__chain__; | |
| 12750 if (chain || chainAll) { | |
| 12751 var result = object(this.__wrapped__), | |
| 12752 actions = result.__actions__ = arrayCopy(this.__actions__); | |
| 12753 | |
| 12754 actions.push({ 'func': func, 'args': arguments, 'thisArg': object }); | |
| 12755 result.__chain__ = chainAll; | |
| 12756 return result; | |
| 12757 } | |
| 12758 var args = [this.value()]; | |
| 12759 push.apply(args, arguments); | |
| 12760 return func.apply(object, args); | |
| 12761 }; | |
| 12762 }(func)); | |
| 12763 } | |
| 12764 } | |
| 12765 return object; | |
| 12766 } | |
| 12767 | |
| 12768 /** | |
| 12769 * Reverts the `_` variable to its previous value and returns a reference to | |
| 12770 * the `lodash` function. | |
| 12771 * | |
| 12772 * @static | |
| 12773 * @memberOf _ | |
| 12774 * @category Utility | |
| 12775 * @returns {Function} Returns the `lodash` function. | |
| 12776 * @example | |
| 12777 * | |
| 12778 * var lodash = _.noConflict(); | |
| 12779 */ | |
| 12780 function noConflict() { | |
| 12781 context._ = oldDash; | |
| 12782 return this; | |
| 12783 } | |
| 12784 | |
| 12785 /** | |
| 12786 * A no-operation function which returns `undefined` regardless of the | |
| 12787 * arguments it receives. | |
| 12788 * | |
| 12789 * @static | |
| 12790 * @memberOf _ | |
| 12791 * @category Utility | |
| 12792 * @example | |
| 12793 * | |
| 12794 * var object = { 'user': 'fred' }; | |
| 12795 * | |
| 12796 * _.noop(object) === undefined; | |
| 12797 * // => true | |
| 12798 */ | |
| 12799 function noop() { | |
| 12800 // No operation performed. | |
| 12801 } | |
| 12802 | |
| 12803 /** | |
| 12804 * Creates a function which returns the property value at `path` on a | |
| 12805 * given object. | |
| 12806 * | |
| 12807 * @static | |
| 12808 * @memberOf _ | |
| 12809 * @category Utility | |
| 12810 * @param {Array|string} path The path of the property to get. | |
| 12811 * @returns {Function} Returns the new function. | |
| 12812 * @example | |
| 12813 * | |
| 12814 * var objects = [ | |
| 12815 * { 'a': { 'b': { 'c': 2 } } }, | |
| 12816 * { 'a': { 'b': { 'c': 1 } } } | |
| 12817 * ]; | |
| 12818 * | |
| 12819 * _.map(objects, _.property('a.b.c')); | |
| 12820 * // => [2, 1] | |
| 12821 * | |
| 12822 * _.pluck(_.sortBy(objects, _.property(['a', 'b', 'c'])), 'a.b.c'); | |
| 12823 * // => [1, 2] | |
| 12824 */ | |
| 12825 function property(path) { | |
| 12826 return isKey(path) ? baseProperty(path) : basePropertyDeep(path); | |
| 12827 } | |
| 12828 | |
| 12829 /** | |
| 12830 * The opposite of `_.property`; this method creates a function which returns | |
| 12831 * the property value at a given path on `object`. | |
| 12832 * | |
| 12833 * @static | |
| 12834 * @memberOf _ | |
| 12835 * @category Utility | |
| 12836 * @param {Object} object The object to query. | |
| 12837 * @returns {Function} Returns the new function. | |
| 12838 * @example | |
| 12839 * | |
| 12840 * var array = [0, 1, 2], | |
| 12841 * object = { 'a': array, 'b': array, 'c': array }; | |
| 12842 * | |
| 12843 * _.map(['a[2]', 'c[0]'], _.propertyOf(object)); | |
| 12844 * // => [2, 0] | |
| 12845 * | |
| 12846 * _.map([['a', '2'], ['c', '0']], _.propertyOf(object)); | |
| 12847 * // => [2, 0] | |
| 12848 */ | |
| 12849 function propertyOf(object) { | |
| 12850 return function(path) { | |
| 12851 return baseGet(object, toPath(path), path + ''); | |
| 12852 }; | |
| 12853 } | |
| 12854 | |
| 12855 /** | |
| 12856 * Creates an array of numbers (positive and/or negative) progressing from | |
| 12857 * `start` up to, but not including, `end`. If `end` is not specified it is | |
| 12858 * set to `start` with `start` then set to `0`. If `end` is less than `start` | |
| 12859 * a zero-length range is created unless a negative `step` is specified. | |
| 12860 * | |
| 12861 * @static | |
| 12862 * @memberOf _ | |
| 12863 * @category Utility | |
| 12864 * @param {number} [start=0] The start of the range. | |
| 12865 * @param {number} end The end of the range. | |
| 12866 * @param {number} [step=1] The value to increment or decrement by. | |
| 12867 * @returns {Array} Returns the new array of numbers. | |
| 12868 * @example | |
| 12869 * | |
| 12870 * _.range(4); | |
| 12871 * // => [0, 1, 2, 3] | |
| 12872 * | |
| 12873 * _.range(1, 5); | |
| 12874 * // => [1, 2, 3, 4] | |
| 12875 * | |
| 12876 * _.range(0, 20, 5); | |
| 12877 * // => [0, 5, 10, 15] | |
| 12878 * | |
| 12879 * _.range(0, -4, -1); | |
| 12880 * // => [0, -1, -2, -3] | |
| 12881 * | |
| 12882 * _.range(1, 4, 0); | |
| 12883 * // => [1, 1, 1] | |
| 12884 * | |
| 12885 * _.range(0); | |
| 12886 * // => [] | |
| 12887 */ | |
| 12888 function range(start, end, step) { | |
| 12889 if (step && isIterateeCall(start, end, step)) { | |
| 12890 end = step = null; | |
| 12891 } | |
| 12892 start = +start || 0; | |
| 12893 step = step == null ? 1 : (+step || 0); | |
| 12894 | |
| 12895 if (end == null) { | |
| 12896 end = start; | |
| 12897 start = 0; | |
| 12898 } else { | |
| 12899 end = +end || 0; | |
| 12900 } | |
| 12901 // Use `Array(length)` so engines like Chakra and V8 avoid slower modes. | |
| 12902 // See https://youtu.be/XAqIpGU8ZZk#t=17m25s for more details. | |
| 12903 var index = -1, | |
| 12904 length = nativeMax(ceil((end - start) / (step || 1)), 0), | |
| 12905 result = Array(length); | |
| 12906 | |
| 12907 while (++index < length) { | |
| 12908 result[index] = start; | |
| 12909 start += step; | |
| 12910 } | |
| 12911 return result; | |
| 12912 } | |
| 12913 | |
| 12914 /** | |
| 12915 * Invokes the iteratee function `n` times, returning an array of the results | |
| 12916 * of each invocation. The `iteratee` is bound to `thisArg` and invoked with | |
| 12917 * one argument; (index). | |
| 12918 * | |
| 12919 * @static | |
| 12920 * @memberOf _ | |
| 12921 * @category Utility | |
| 12922 * @param {number} n The number of times to invoke `iteratee`. | |
| 12923 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 12924 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 12925 * @returns {Array} Returns the array of results. | |
| 12926 * @example | |
| 12927 * | |
| 12928 * var diceRolls = _.times(3, _.partial(_.random, 1, 6, false)); | |
| 12929 * // => [3, 6, 4] | |
| 12930 * | |
| 12931 * _.times(3, function(n) { | |
| 12932 * mage.castSpell(n); | |
| 12933 * }); | |
| 12934 * // => invokes `mage.castSpell(n)` three times with `n` of `0`, `1`, and `2` | |
| 12935 * | |
| 12936 * _.times(3, function(n) { | |
| 12937 * this.cast(n); | |
| 12938 * }, mage); | |
| 12939 * // => also invokes `mage.castSpell(n)` three times | |
| 12940 */ | |
| 12941 function times(n, iteratee, thisArg) { | |
| 12942 n = floor(n); | |
| 12943 | |
| 12944 // Exit early to avoid a JSC JIT bug in Safari 8 | |
| 12945 // where `Array(0)` is treated as `Array(1)`. | |
| 12946 if (n < 1 || !nativeIsFinite(n)) { | |
| 12947 return []; | |
| 12948 } | |
| 12949 var index = -1, | |
| 12950 result = Array(nativeMin(n, MAX_ARRAY_LENGTH)); | |
| 12951 | |
| 12952 iteratee = bindCallback(iteratee, thisArg, 1); | |
| 12953 while (++index < n) { | |
| 12954 if (index < MAX_ARRAY_LENGTH) { | |
| 12955 result[index] = iteratee(index); | |
| 12956 } else { | |
| 12957 iteratee(index); | |
| 12958 } | |
| 12959 } | |
| 12960 return result; | |
| 12961 } | |
| 12962 | |
| 12963 /** | |
| 12964 * Generates a unique ID. If `prefix` is provided the ID is appended to it. | |
| 12965 * | |
| 12966 * @static | |
| 12967 * @memberOf _ | |
| 12968 * @category Utility | |
| 12969 * @param {string} [prefix] The value to prefix the ID with. | |
| 12970 * @returns {string} Returns the unique ID. | |
| 12971 * @example | |
| 12972 * | |
| 12973 * _.uniqueId('contact_'); | |
| 12974 * // => 'contact_104' | |
| 12975 * | |
| 12976 * _.uniqueId(); | |
| 12977 * // => '105' | |
| 12978 */ | |
| 12979 function uniqueId(prefix) { | |
| 12980 var id = ++idCounter; | |
| 12981 return baseToString(prefix) + id; | |
| 12982 } | |
| 12983 | |
| 12984 /*------------------------------------------------------------------------*/ | |
| 12985 | |
| 12986 /** | |
| 12987 * Adds two numbers. | |
| 12988 * | |
| 12989 * @static | |
| 12990 * @memberOf _ | |
| 12991 * @category Math | |
| 12992 * @param {number} augend The first number to add. | |
| 12993 * @param {number} addend The second number to add. | |
| 12994 * @returns {number} Returns the sum. | |
| 12995 * @example | |
| 12996 * | |
| 12997 * _.add(6, 4); | |
| 12998 * // => 10 | |
| 12999 */ | |
| 13000 function add(augend, addend) { | |
| 13001 return (+augend || 0) + (+addend || 0); | |
| 13002 } | |
| 13003 | |
| 13004 /** | |
| 13005 * Gets the maximum value of `collection`. If `collection` is empty or falsey | |
| 13006 * `-Infinity` is returned. If an iteratee function is provided it is invoked | |
| 13007 * for each value in `collection` to generate the criterion by which the value | |
| 13008 * is ranked. The `iteratee` is bound to `thisArg` and invoked with three | |
| 13009 * arguments: (value, index, collection). | |
| 13010 * | |
| 13011 * If a property name is provided for `iteratee` the created `_.property` | |
| 13012 * style callback returns the property value of the given element. | |
| 13013 * | |
| 13014 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 13015 * style callback returns `true` for elements that have a matching property | |
| 13016 * value, else `false`. | |
| 13017 * | |
| 13018 * If an object is provided for `iteratee` the created `_.matches` style | |
| 13019 * callback returns `true` for elements that have the properties of the given | |
| 13020 * object, else `false`. | |
| 13021 * | |
| 13022 * @static | |
| 13023 * @memberOf _ | |
| 13024 * @category Math | |
| 13025 * @param {Array|Object|string} collection The collection to iterate over. | |
| 13026 * @param {Function|Object|string} [iteratee] The function invoked per iteration. | |
| 13027 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 13028 * @returns {*} Returns the maximum value. | |
| 13029 * @example | |
| 13030 * | |
| 13031 * _.max([4, 2, 8, 6]); | |
| 13032 * // => 8 | |
| 13033 * | |
| 13034 * _.max([]); | |
| 13035 * // => -Infinity | |
| 13036 * | |
| 13037 * var users = [ | |
| 13038 * { 'user': 'barney', 'age': 36 }, | |
| 13039 * { 'user': 'fred', 'age': 40 } | |
| 13040 * ]; | |
| 13041 * | |
| 13042 * _.max(users, function(chr) { | |
| 13043 * return chr.age; | |
| 13044 * }); | |
| 13045 * // => { 'user': 'fred', 'age': 40 } | |
| 13046 * | |
| 13047 * // using the `_.property` callback shorthand | |
| 13048 * _.max(users, 'age'); | |
| 13049 * // => { 'user': 'fred', 'age': 40 } | |
| 13050 */ | |
| 13051 var max = createExtremum(arrayMax); | |
| 13052 | |
| 13053 /** | |
| 13054 * Gets the minimum value of `collection`. If `collection` is empty or falsey | |
| 13055 * `Infinity` is returned. If an iteratee function is provided it is invoked | |
| 13056 * for each value in `collection` to generate the criterion by which the value | |
| 13057 * is ranked. The `iteratee` is bound to `thisArg` and invoked with three | |
| 13058 * arguments: (value, index, collection). | |
| 13059 * | |
| 13060 * If a property name is provided for `iteratee` the created `_.property` | |
| 13061 * style callback returns the property value of the given element. | |
| 13062 * | |
| 13063 * If a value is also provided for `thisArg` the created `_.matchesProperty` | |
| 13064 * style callback returns `true` for elements that have a matching property | |
| 13065 * value, else `false`. | |
| 13066 * | |
| 13067 * If an object is provided for `iteratee` the created `_.matches` style | |
| 13068 * callback returns `true` for elements that have the properties of the given | |
| 13069 * object, else `false`. | |
| 13070 * | |
| 13071 * @static | |
| 13072 * @memberOf _ | |
| 13073 * @category Math | |
| 13074 * @param {Array|Object|string} collection The collection to iterate over. | |
| 13075 * @param {Function|Object|string} [iteratee] The function invoked per iteration. | |
| 13076 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 13077 * @returns {*} Returns the minimum value. | |
| 13078 * @example | |
| 13079 * | |
| 13080 * _.min([4, 2, 8, 6]); | |
| 13081 * // => 2 | |
| 13082 * | |
| 13083 * _.min([]); | |
| 13084 * // => Infinity | |
| 13085 * | |
| 13086 * var users = [ | |
| 13087 * { 'user': 'barney', 'age': 36 }, | |
| 13088 * { 'user': 'fred', 'age': 40 } | |
| 13089 * ]; | |
| 13090 * | |
| 13091 * _.min(users, function(chr) { | |
| 13092 * return chr.age; | |
| 13093 * }); | |
| 13094 * // => { 'user': 'barney', 'age': 36 } | |
| 13095 * | |
| 13096 * // using the `_.property` callback shorthand | |
| 13097 * _.min(users, 'age'); | |
| 13098 * // => { 'user': 'barney', 'age': 36 } | |
| 13099 */ | |
| 13100 var min = createExtremum(arrayMin, true); | |
| 13101 | |
| 13102 /** | |
| 13103 * Gets the sum of the values in `collection`. | |
| 13104 * | |
| 13105 * @static | |
| 13106 * @memberOf _ | |
| 13107 * @category Math | |
| 13108 * @param {Array|Object|string} collection The collection to iterate over. | |
| 13109 * @param {Function|Object|string} [iteratee] The function invoked per iteration. | |
| 13110 * @param {*} [thisArg] The `this` binding of `iteratee`. | |
| 13111 * @returns {number} Returns the sum. | |
| 13112 * @example | |
| 13113 * | |
| 13114 * _.sum([4, 6]); | |
| 13115 * // => 10 | |
| 13116 * | |
| 13117 * _.sum({ 'a': 4, 'b': 6 }); | |
| 13118 * // => 10 | |
| 13119 * | |
| 13120 * var objects = [ | |
| 13121 * { 'n': 4 }, | |
| 13122 * { 'n': 6 } | |
| 13123 * ]; | |
| 13124 * | |
| 13125 * _.sum(objects, function(object) { | |
| 13126 * return object.n; | |
| 13127 * }); | |
| 13128 * // => 10 | |
| 13129 * | |
| 13130 * // using the `_.property` callback shorthand | |
| 13131 * _.sum(objects, 'n'); | |
| 13132 * // => 10 | |
| 13133 */ | |
| 13134 function sum(collection, iteratee, thisArg) { | |
| 13135 if (thisArg && isIterateeCall(collection, iteratee, thisArg)) { | |
| 13136 iteratee = null; | |
| 13137 } | |
| 13138 var func = getCallback(), | |
| 13139 noIteratee = iteratee == null; | |
| 13140 | |
| 13141 if (!(func === baseCallback && noIteratee)) { | |
| 13142 noIteratee = false; | |
| 13143 iteratee = func(iteratee, thisArg, 3); | |
| 13144 } | |
| 13145 return noIteratee | |
| 13146 ? arraySum(isArray(collection) ? collection : toIterable(collection)) | |
| 13147 : baseSum(collection, iteratee); | |
| 13148 } | |
| 13149 | |
| 13150 /*------------------------------------------------------------------------*/ | |
| 13151 | |
| 13152 // Ensure wrappers are instances of `baseLodash`. | |
| 13153 lodash.prototype = baseLodash.prototype; | |
| 13154 | |
| 13155 LodashWrapper.prototype = baseCreate(baseLodash.prototype); | |
| 13156 LodashWrapper.prototype.constructor = LodashWrapper; | |
| 13157 | |
| 13158 LazyWrapper.prototype = baseCreate(baseLodash.prototype); | |
| 13159 LazyWrapper.prototype.constructor = LazyWrapper; | |
| 13160 | |
| 13161 // Add functions to the `Map` cache. | |
| 13162 MapCache.prototype['delete'] = mapDelete; | |
| 13163 MapCache.prototype.get = mapGet; | |
| 13164 MapCache.prototype.has = mapHas; | |
| 13165 MapCache.prototype.set = mapSet; | |
| 13166 | |
| 13167 // Add functions to the `Set` cache. | |
| 13168 SetCache.prototype.push = cachePush; | |
| 13169 | |
| 13170 // Assign cache to `_.memoize`. | |
| 13171 memoize.Cache = MapCache; | |
| 13172 | |
| 13173 // Add functions that return wrapped values when chaining. | |
| 13174 lodash.after = after; | |
| 13175 lodash.ary = ary; | |
| 13176 lodash.assign = assign; | |
| 13177 lodash.at = at; | |
| 13178 lodash.before = before; | |
| 13179 lodash.bind = bind; | |
| 13180 lodash.bindAll = bindAll; | |
| 13181 lodash.bindKey = bindKey; | |
| 13182 lodash.callback = callback; | |
| 13183 lodash.chain = chain; | |
| 13184 lodash.chunk = chunk; | |
| 13185 lodash.compact = compact; | |
| 13186 lodash.constant = constant; | |
| 13187 lodash.countBy = countBy; | |
| 13188 lodash.create = create; | |
| 13189 lodash.curry = curry; | |
| 13190 lodash.curryRight = curryRight; | |
| 13191 lodash.debounce = debounce; | |
| 13192 lodash.defaults = defaults; | |
| 13193 lodash.defer = defer; | |
| 13194 lodash.delay = delay; | |
| 13195 lodash.difference = difference; | |
| 13196 lodash.drop = drop; | |
| 13197 lodash.dropRight = dropRight; | |
| 13198 lodash.dropRightWhile = dropRightWhile; | |
| 13199 lodash.dropWhile = dropWhile; | |
| 13200 lodash.fill = fill; | |
| 13201 lodash.filter = filter; | |
| 13202 lodash.flatten = flatten; | |
| 13203 lodash.flattenDeep = flattenDeep; | |
| 13204 lodash.flow = flow; | |
| 13205 lodash.flowRight = flowRight; | |
| 13206 lodash.forEach = forEach; | |
| 13207 lodash.forEachRight = forEachRight; | |
| 13208 lodash.forIn = forIn; | |
| 13209 lodash.forInRight = forInRight; | |
| 13210 lodash.forOwn = forOwn; | |
| 13211 lodash.forOwnRight = forOwnRight; | |
| 13212 lodash.functions = functions; | |
| 13213 lodash.groupBy = groupBy; | |
| 13214 lodash.indexBy = indexBy; | |
| 13215 lodash.initial = initial; | |
| 13216 lodash.intersection = intersection; | |
| 13217 lodash.invert = invert; | |
| 13218 lodash.invoke = invoke; | |
| 13219 lodash.keys = keys; | |
| 13220 lodash.keysIn = keysIn; | |
| 13221 lodash.map = map; | |
| 13222 lodash.mapValues = mapValues; | |
| 13223 lodash.matches = matches; | |
| 13224 lodash.matchesProperty = matchesProperty; | |
| 13225 lodash.memoize = memoize; | |
| 13226 lodash.merge = merge; | |
| 13227 lodash.method = method; | |
| 13228 lodash.methodOf = methodOf; | |
| 13229 lodash.mixin = mixin; | |
| 13230 lodash.negate = negate; | |
| 13231 lodash.omit = omit; | |
| 13232 lodash.once = once; | |
| 13233 lodash.pairs = pairs; | |
| 13234 lodash.partial = partial; | |
| 13235 lodash.partialRight = partialRight; | |
| 13236 lodash.partition = partition; | |
| 13237 lodash.pick = pick; | |
| 13238 lodash.pluck = pluck; | |
| 13239 lodash.property = property; | |
| 13240 lodash.propertyOf = propertyOf; | |
| 13241 lodash.pull = pull; | |
| 13242 lodash.pullAt = pullAt; | |
| 13243 lodash.range = range; | |
| 13244 lodash.rearg = rearg; | |
| 13245 lodash.reject = reject; | |
| 13246 lodash.remove = remove; | |
| 13247 lodash.rest = rest; | |
| 13248 lodash.restParam = restParam; | |
| 13249 lodash.set = set; | |
| 13250 lodash.shuffle = shuffle; | |
| 13251 lodash.slice = slice; | |
| 13252 lodash.sortBy = sortBy; | |
| 13253 lodash.sortByAll = sortByAll; | |
| 13254 lodash.sortByOrder = sortByOrder; | |
| 13255 lodash.spread = spread; | |
| 13256 lodash.take = take; | |
| 13257 lodash.takeRight = takeRight; | |
| 13258 lodash.takeRightWhile = takeRightWhile; | |
| 13259 lodash.takeWhile = takeWhile; | |
| 13260 lodash.tap = tap; | |
| 13261 lodash.throttle = throttle; | |
| 13262 lodash.thru = thru; | |
| 13263 lodash.times = times; | |
| 13264 lodash.toArray = toArray; | |
| 13265 lodash.toPlainObject = toPlainObject; | |
| 13266 lodash.transform = transform; | |
| 13267 lodash.union = union; | |
| 13268 lodash.uniq = uniq; | |
| 13269 lodash.unzip = unzip; | |
| 13270 lodash.values = values; | |
| 13271 lodash.valuesIn = valuesIn; | |
| 13272 lodash.where = where; | |
| 13273 lodash.without = without; | |
| 13274 lodash.wrap = wrap; | |
| 13275 lodash.xor = xor; | |
| 13276 lodash.zip = zip; | |
| 13277 lodash.zipObject = zipObject; | |
| 13278 | |
| 13279 // Add aliases. | |
| 13280 lodash.backflow = flowRight; | |
| 13281 lodash.collect = map; | |
| 13282 lodash.compose = flowRight; | |
| 13283 lodash.each = forEach; | |
| 13284 lodash.eachRight = forEachRight; | |
| 13285 lodash.extend = assign; | |
| 13286 lodash.iteratee = callback; | |
| 13287 lodash.methods = functions; | |
| 13288 lodash.object = zipObject; | |
| 13289 lodash.select = filter; | |
| 13290 lodash.tail = rest; | |
| 13291 lodash.unique = uniq; | |
| 13292 | |
| 13293 // Add functions to `lodash.prototype`. | |
| 13294 mixin(lodash, lodash); | |
| 13295 | |
| 13296 /*------------------------------------------------------------------------*/ | |
| 13297 | |
| 13298 // Add functions that return unwrapped values when chaining. | |
| 13299 lodash.add = add; | |
| 13300 lodash.attempt = attempt; | |
| 13301 lodash.camelCase = camelCase; | |
| 13302 lodash.capitalize = capitalize; | |
| 13303 lodash.clone = clone; | |
| 13304 lodash.cloneDeep = cloneDeep; | |
| 13305 lodash.deburr = deburr; | |
| 13306 lodash.endsWith = endsWith; | |
| 13307 lodash.escape = escape; | |
| 13308 lodash.escapeRegExp = escapeRegExp; | |
| 13309 lodash.every = every; | |
| 13310 lodash.find = find; | |
| 13311 lodash.findIndex = findIndex; | |
| 13312 lodash.findKey = findKey; | |
| 13313 lodash.findLast = findLast; | |
| 13314 lodash.findLastIndex = findLastIndex; | |
| 13315 lodash.findLastKey = findLastKey; | |
| 13316 lodash.findWhere = findWhere; | |
| 13317 lodash.first = first; | |
| 13318 lodash.get = get; | |
| 13319 lodash.has = has; | |
| 13320 lodash.identity = identity; | |
| 13321 lodash.includes = includes; | |
| 13322 lodash.indexOf = indexOf; | |
| 13323 lodash.inRange = inRange; | |
| 13324 lodash.isArguments = isArguments; | |
| 13325 lodash.isArray = isArray; | |
| 13326 lodash.isBoolean = isBoolean; | |
| 13327 lodash.isDate = isDate; | |
| 13328 lodash.isElement = isElement; | |
| 13329 lodash.isEmpty = isEmpty; | |
| 13330 lodash.isEqual = isEqual; | |
| 13331 lodash.isError = isError; | |
| 13332 lodash.isFinite = isFinite; | |
| 13333 lodash.isFunction = isFunction; | |
| 13334 lodash.isMatch = isMatch; | |
| 13335 lodash.isNaN = isNaN; | |
| 13336 lodash.isNative = isNative; | |
| 13337 lodash.isNull = isNull; | |
| 13338 lodash.isNumber = isNumber; | |
| 13339 lodash.isObject = isObject; | |
| 13340 lodash.isPlainObject = isPlainObject; | |
| 13341 lodash.isRegExp = isRegExp; | |
| 13342 lodash.isString = isString; | |
| 13343 lodash.isTypedArray = isTypedArray; | |
| 13344 lodash.isUndefined = isUndefined; | |
| 13345 lodash.kebabCase = kebabCase; | |
| 13346 lodash.last = last; | |
| 13347 lodash.lastIndexOf = lastIndexOf; | |
| 13348 lodash.max = max; | |
| 13349 lodash.min = min; | |
| 13350 lodash.noConflict = noConflict; | |
| 13351 lodash.noop = noop; | |
| 13352 lodash.now = now; | |
| 13353 lodash.pad = pad; | |
| 13354 lodash.padLeft = padLeft; | |
| 13355 lodash.padRight = padRight; | |
| 13356 lodash.parseInt = parseInt; | |
| 13357 lodash.random = random; | |
| 13358 lodash.reduce = reduce; | |
| 13359 lodash.reduceRight = reduceRight; | |
| 13360 lodash.repeat = repeat; | |
| 13361 lodash.result = result; | |
| 13362 lodash.runInContext = runInContext; | |
| 13363 lodash.size = size; | |
| 13364 lodash.snakeCase = snakeCase; | |
| 13365 lodash.some = some; | |
| 13366 lodash.sortedIndex = sortedIndex; | |
| 13367 lodash.sortedLastIndex = sortedLastIndex; | |
| 13368 lodash.startCase = startCase; | |
| 13369 lodash.startsWith = startsWith; | |
| 13370 lodash.sum = sum; | |
| 13371 lodash.template = template; | |
| 13372 lodash.trim = trim; | |
| 13373 lodash.trimLeft = trimLeft; | |
| 13374 lodash.trimRight = trimRight; | |
| 13375 lodash.trunc = trunc; | |
| 13376 lodash.unescape = unescape; | |
| 13377 lodash.uniqueId = uniqueId; | |
| 13378 lodash.words = words; | |
| 13379 | |
| 13380 // Add aliases. | |
| 13381 lodash.all = every; | |
| 13382 lodash.any = some; | |
| 13383 lodash.contains = includes; | |
| 13384 lodash.detect = find; | |
| 13385 lodash.foldl = reduce; | |
| 13386 lodash.foldr = reduceRight; | |
| 13387 lodash.head = first; | |
| 13388 lodash.include = includes; | |
| 13389 lodash.inject = reduce; | |
| 13390 | |
| 13391 mixin(lodash, (function() { | |
| 13392 var source = {}; | |
| 13393 baseForOwn(lodash, function(func, methodName) { | |
| 13394 if (!lodash.prototype[methodName]) { | |
| 13395 source[methodName] = func; | |
| 13396 } | |
| 13397 }); | |
| 13398 return source; | |
| 13399 }()), false); | |
| 13400 | |
| 13401 /*------------------------------------------------------------------------*/ | |
| 13402 | |
| 13403 // Add functions capable of returning wrapped and unwrapped values when chaining. | |
| 13404 lodash.sample = sample; | |
| 13405 | |
| 13406 lodash.prototype.sample = function(n) { | |
| 13407 if (!this.__chain__ && n == null) { | |
| 13408 return sample(this.value()); | |
| 13409 } | |
| 13410 return this.thru(function(value) { | |
| 13411 return sample(value, n); | |
| 13412 }); | |
| 13413 }; | |
| 13414 | |
| 13415 /*------------------------------------------------------------------------*/ | |
| 13416 | |
| 13417 /** | |
| 13418 * The semantic version number. | |
| 13419 * | |
| 13420 * @static | |
| 13421 * @memberOf _ | |
| 13422 * @type string | |
| 13423 */ | |
| 13424 lodash.VERSION = VERSION; | |
| 13425 | |
| 13426 // Assign default placeholders. | |
| 13427 arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) { | |
| 13428 lodash[methodName].placeholder = lodash; | |
| 13429 }); | |
| 13430 | |
| 13431 // Add `LazyWrapper` methods that accept an `iteratee` value. | |
| 13432 arrayEach(['dropWhile', 'filter', 'map', 'takeWhile'], function(methodName, type) { | |
| 13433 var isFilter = type != LAZY_MAP_FLAG, | |
| 13434 isDropWhile = type == LAZY_DROP_WHILE_FLAG; | |
| 13435 | |
| 13436 LazyWrapper.prototype[methodName] = function(iteratee, thisArg) { | |
| 13437 var filtered = this.__filtered__, | |
| 13438 result = (filtered && isDropWhile) ? new LazyWrapper(this) : this.clone(), | |
| 13439 iteratees = result.__iteratees__ || (result.__iteratees__ = []); | |
| 13440 | |
| 13441 iteratees.push({ | |
| 13442 'done': false, | |
| 13443 'count': 0, | |
| 13444 'index': 0, | |
| 13445 'iteratee': getCallback(iteratee, thisArg, 1), | |
| 13446 'limit': -1, | |
| 13447 'type': type | |
| 13448 }); | |
| 13449 | |
| 13450 result.__filtered__ = filtered || isFilter; | |
| 13451 return result; | |
| 13452 }; | |
| 13453 }); | |
| 13454 | |
| 13455 // Add `LazyWrapper` methods for `_.drop` and `_.take` variants. | |
| 13456 arrayEach(['drop', 'take'], function(methodName, index) { | |
| 13457 var whileName = methodName + 'While'; | |
| 13458 | |
| 13459 LazyWrapper.prototype[methodName] = function(n) { | |
| 13460 var filtered = this.__filtered__, | |
| 13461 result = (filtered && !index) ? this.dropWhile() : this.clone(); | |
| 13462 | |
| 13463 n = n == null ? 1 : nativeMax(floor(n) || 0, 0); | |
| 13464 if (filtered) { | |
| 13465 if (index) { | |
| 13466 result.__takeCount__ = nativeMin(result.__takeCount__, n); | |
| 13467 } else { | |
| 13468 last(result.__iteratees__).limit = n; | |
| 13469 } | |
| 13470 } else { | |
| 13471 var views = result.__views__ || (result.__views__ = []); | |
| 13472 views.push({ 'size': n, 'type': methodName + (result.__dir__ < 0 ? 'Right' : '') }); | |
| 13473 } | |
| 13474 return result; | |
| 13475 }; | |
| 13476 | |
| 13477 LazyWrapper.prototype[methodName + 'Right'] = function(n) { | |
| 13478 return this.reverse()[methodName](n).reverse(); | |
| 13479 }; | |
| 13480 | |
| 13481 LazyWrapper.prototype[methodName + 'RightWhile'] = function(predicate, thisArg) { | |
| 13482 return this.reverse()[whileName](predicate, thisArg).reverse(); | |
| 13483 }; | |
| 13484 }); | |
| 13485 | |
| 13486 // Add `LazyWrapper` methods for `_.first` and `_.last`. | |
| 13487 arrayEach(['first', 'last'], function(methodName, index) { | |
| 13488 var takeName = 'take' + (index ? 'Right' : ''); | |
| 13489 | |
| 13490 LazyWrapper.prototype[methodName] = function() { | |
| 13491 return this[takeName](1).value()[0]; | |
| 13492 }; | |
| 13493 }); | |
| 13494 | |
| 13495 // Add `LazyWrapper` methods for `_.initial` and `_.rest`. | |
| 13496 arrayEach(['initial', 'rest'], function(methodName, index) { | |
| 13497 var dropName = 'drop' + (index ? '' : 'Right'); | |
| 13498 | |
| 13499 LazyWrapper.prototype[methodName] = function() { | |
| 13500 return this[dropName](1); | |
| 13501 }; | |
| 13502 }); | |
| 13503 | |
| 13504 // Add `LazyWrapper` methods for `_.pluck` and `_.where`. | |
| 13505 arrayEach(['pluck', 'where'], function(methodName, index) { | |
| 13506 var operationName = index ? 'filter' : 'map', | |
| 13507 createCallback = index ? baseMatches : property; | |
| 13508 | |
| 13509 LazyWrapper.prototype[methodName] = function(value) { | |
| 13510 return this[operationName](createCallback(value)); | |
| 13511 }; | |
| 13512 }); | |
| 13513 | |
| 13514 LazyWrapper.prototype.compact = function() { | |
| 13515 return this.filter(identity); | |
| 13516 }; | |
| 13517 | |
| 13518 LazyWrapper.prototype.reject = function(predicate, thisArg) { | |
| 13519 predicate = getCallback(predicate, thisArg, 1); | |
| 13520 return this.filter(function(value) { | |
| 13521 return !predicate(value); | |
| 13522 }); | |
| 13523 }; | |
| 13524 | |
| 13525 LazyWrapper.prototype.slice = function(start, end) { | |
| 13526 start = start == null ? 0 : (+start || 0); | |
| 13527 var result = start < 0 ? this.takeRight(-start) : this.drop(start); | |
| 13528 | |
| 13529 if (end !== undefined) { | |
| 13530 end = (+end || 0); | |
| 13531 result = end < 0 ? result.dropRight(-end) : result.take(end - start); | |
| 13532 } | |
| 13533 return result; | |
| 13534 }; | |
| 13535 | |
| 13536 LazyWrapper.prototype.toArray = function() { | |
| 13537 return this.drop(0); | |
| 13538 }; | |
| 13539 | |
| 13540 // Add `LazyWrapper` methods to `lodash.prototype`. | |
| 13541 baseForOwn(LazyWrapper.prototype, function(func, methodName) { | |
| 13542 var lodashFunc = lodash[methodName]; | |
| 13543 if (!lodashFunc) { | |
| 13544 return; | |
| 13545 } | |
| 13546 var checkIteratee = /^(?:filter|map|reject)|While$/.test(methodName), | |
| 13547 retUnwrapped = /^(?:first|last)$/.test(methodName); | |
| 13548 | |
| 13549 lodash.prototype[methodName] = function() { | |
| 13550 var args = arguments, | |
| 13551 length = args.length, | |
| 13552 chainAll = this.__chain__, | |
| 13553 value = this.__wrapped__, | |
| 13554 isHybrid = !!this.__actions__.length, | |
| 13555 isLazy = value instanceof LazyWrapper, | |
| 13556 iteratee = args[0], | |
| 13557 useLazy = isLazy || isArray(value); | |
| 13558 | |
| 13559 if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) { | |
| 13560 // avoid lazy use if the iteratee has a "length" value other than `1` | |
| 13561 isLazy = useLazy = false; | |
| 13562 } | |
| 13563 var onlyLazy = isLazy && !isHybrid; | |
| 13564 if (retUnwrapped && !chainAll) { | |
| 13565 return onlyLazy | |
| 13566 ? func.call(value) | |
| 13567 : lodashFunc.call(lodash, this.value()); | |
| 13568 } | |
| 13569 var interceptor = function(value) { | |
| 13570 var otherArgs = [value]; | |
| 13571 push.apply(otherArgs, args); | |
| 13572 return lodashFunc.apply(lodash, otherArgs); | |
| 13573 }; | |
| 13574 if (useLazy) { | |
| 13575 var wrapper = onlyLazy ? value : new LazyWrapper(this), | |
| 13576 result = func.apply(wrapper, args); | |
| 13577 | |
| 13578 if (!retUnwrapped && (isHybrid || result.__actions__)) { | |
| 13579 var actions = result.__actions__ || (result.__actions__ = []); | |
| 13580 actions.push({ 'func': thru, 'args': [interceptor], 'thisArg': lodash }); | |
| 13581 } | |
| 13582 return new LodashWrapper(result, chainAll); | |
| 13583 } | |
| 13584 return this.thru(interceptor); | |
| 13585 }; | |
| 13586 }); | |
| 13587 | |
| 13588 // Add `Array` and `String` methods to `lodash.prototype`. | |
| 13589 arrayEach(['concat', 'join', 'pop', 'push', 'replace', 'shift', 'sort', 'splice', 'split', 'unshift'], function(methodName) { | |
| 13590 var func = (/^(?:replace|split)$/.test(methodName) ? stringProto : arrayProto)[methodName], | |
| 13591 chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru', | |
| 13592 retUnwrapped = /^(?:join|pop|replace|shift)$/.test(methodName); | |
| 13593 | |
| 13594 lodash.prototype[methodName] = function() { | |
| 13595 var args = arguments; | |
| 13596 if (retUnwrapped && !this.__chain__) { | |
| 13597 return func.apply(this.value(), args); | |
| 13598 } | |
| 13599 return this[chainName](function(value) { | |
| 13600 return func.apply(value, args); | |
| 13601 }); | |
| 13602 }; | |
| 13603 }); | |
| 13604 | |
| 13605 // Map minified function names to their real names. | |
| 13606 baseForOwn(LazyWrapper.prototype, function(func, methodName) { | |
| 13607 var lodashFunc = lodash[methodName]; | |
| 13608 if (lodashFunc) { | |
| 13609 var key = lodashFunc.name, | |
| 13610 names = realNames[key] || (realNames[key] = []); | |
| 13611 | |
| 13612 names.push({ 'name': methodName, 'func': lodashFunc }); | |
| 13613 } | |
| 13614 }); | |
| 13615 | |
| 13616 realNames[createHybridWrapper(null, BIND_KEY_FLAG).name] = [{ 'name': 'wrapper', 'func': null }]; | |
| 13617 | |
| 13618 // Add functions to the lazy wrapper. | |
| 13619 LazyWrapper.prototype.clone = lazyClone; | |
| 13620 LazyWrapper.prototype.reverse = lazyReverse; | |
| 13621 LazyWrapper.prototype.value = lazyValue; | |
| 13622 | |
| 13623 // Add chaining functions to the `lodash` wrapper. | |
| 13624 lodash.prototype.chain = wrapperChain; | |
| 13625 lodash.prototype.commit = wrapperCommit; | |
| 13626 lodash.prototype.plant = wrapperPlant; | |
| 13627 lodash.prototype.reverse = wrapperReverse; | |
| 13628 lodash.prototype.toString = wrapperToString; | |
| 13629 lodash.prototype.run = lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue; | |
| 13630 | |
| 13631 // Add function aliases to the `lodash` wrapper. | |
| 13632 lodash.prototype.collect = lodash.prototype.map; | |
| 13633 lodash.prototype.head = lodash.prototype.first; | |
| 13634 lodash.prototype.select = lodash.prototype.filter; | |
| 13635 lodash.prototype.tail = lodash.prototype.rest; | |
| 13636 | |
| 13637 return lodash; | |
| 13638 } | |
| 13639 | |
| 13640 /*--------------------------------------------------------------------------*/ | |
| 13641 | |
| 13642 // Export lodash. | |
| 13643 var _ = runInContext(); | |
| 13644 | |
| 13645 // Some AMD build optimizers like r.js check for condition patterns like the following: | |
| 13646 if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) { | |
| 13647 // Expose lodash to the global object when an AMD loader is present to avoid | |
| 13648 // errors in cases where lodash is loaded by a script tag and not intended | |
| 13649 // as an AMD module. See http://requirejs.org/docs/errors.html#mismatch for | |
| 13650 // more details. | |
| 13651 root._ = _; | |
| 13652 | |
| 13653 // Define as an anonymous module so, through path mapping, it can be | |
| 13654 // referenced as the "underscore" module. | |
| 13655 define(function() { | |
| 13656 return _; | |
| 13657 }); | |
| 13658 } | |
| 13659 // Check for `exports` after `define` in case a build optimizer adds an `exports` object. | |
| 13660 else if (freeExports && freeModule) { | |
| 13661 // Export for Node.js or RingoJS. | |
| 13662 if (moduleExports) { | |
| 13663 (freeModule.exports = _)._ = _; | |
| 13664 } | |
| 13665 // Export for Narwhal or Rhino -require. | |
| 13666 else { | |
| 13667 freeExports._ = _; | |
| 13668 } | |
| 13669 } | |
| 13670 else { | |
| 13671 // Export for a browser or Rhino. | |
| 13672 root._ = _; | |
| 13673 } | |
| 13674 }.call(this)); | |
| 13675 | |
| 13676 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
| 13677 },{}],13:[function(require,module,exports){ | |
| 13678 /* | |
| 13679 * Lexical analysis and token construction. | |
| 13680 */ | |
| 13681 | |
| 13682 "use strict"; | |
| 13683 | |
| 13684 var _ = require("lodash"); | |
| 13685 var events = require("events"); | |
| 13686 var reg = require("./reg.js"); | |
| 13687 var state = require("./state.js").state; | |
| 13688 | |
| 13689 var unicodeData = require("../data/ascii-identifier-data.js"); | |
| 13690 var asciiIdentifierStartTable = unicodeData.asciiIdentifierStartTable; | |
| 13691 var asciiIdentifierPartTable = unicodeData.asciiIdentifierPartTable; | |
| 13692 var nonAsciiIdentifierStartTable = require("../data/non-ascii-identifier-start.js"); | |
| 13693 var nonAsciiIdentifierPartTable = require("../data/non-ascii-identifier-part-only.js"); | |
| 13694 | |
| 13695 // Some of these token types are from JavaScript Parser API | |
| 13696 // while others are specific to JSHint parser. | |
| 13697 // JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API | |
| 13698 | |
| 13699 var Token = { | |
| 13700 Identifier: 1, | |
| 13701 Punctuator: 2, | |
| 13702 NumericLiteral: 3, | |
| 13703 StringLiteral: 4, | |
| 13704 Comment: 5, | |
| 13705 Keyword: 6, | |
| 13706 NullLiteral: 7, | |
| 13707 BooleanLiteral: 8, | |
| 13708 RegExp: 9, | |
| 13709 TemplateHead: 10, | |
| 13710 TemplateMiddle: 11, | |
| 13711 TemplateTail: 12, | |
| 13712 NoSubstTemplate: 13 | |
| 13713 }; | |
| 13714 | |
| 13715 var Context = { | |
| 13716 Block: 1, | |
| 13717 Template: 2 | |
| 13718 }; | |
| 13719 | |
| 13720 function isHex(str) { | |
| 13721 return /^[0-9a-fA-F]+$/.test(str); | |
| 13722 } | |
| 13723 | |
| 13724 function isHexDigit(str) { | |
| 13725 return str.length === 1 && isHex(str); | |
| 13726 } | |
| 13727 | |
| 13728 // Object that handles postponed lexing verifications that checks the parsed | |
| 13729 // environment state. | |
| 13730 | |
| 13731 function asyncTrigger() { | |
| 13732 var _checks = []; | |
| 13733 | |
| 13734 return { | |
| 13735 push: function(fn) { | |
| 13736 _checks.push(fn); | |
| 13737 }, | |
| 13738 | |
| 13739 check: function() { | |
| 13740 for (var check = 0; check < _checks.length; ++check) { | |
| 13741 _checks[check](); | |
| 13742 } | |
| 13743 | |
| 13744 _checks.splice(0, _checks.length); | |
| 13745 } | |
| 13746 }; | |
| 13747 } | |
| 13748 | |
| 13749 /* | |
| 13750 * Lexer for JSHint. | |
| 13751 * | |
| 13752 * This object does a char-by-char scan of the provided source code | |
| 13753 * and produces a sequence of tokens. | |
| 13754 * | |
| 13755 * var lex = new Lexer("var i = 0;"); | |
| 13756 * lex.start(); | |
| 13757 * lex.token(); // returns the next token | |
| 13758 * | |
| 13759 * You have to use the token() method to move the lexer forward | |
| 13760 * but you don't have to use its return value to get tokens. In addition | |
| 13761 * to token() method returning the next token, the Lexer object also | |
| 13762 * emits events. | |
| 13763 * | |
| 13764 * lex.on("Identifier", function(data) { | |
| 13765 * if (data.name.indexOf("_") >= 0) { | |
| 13766 * // Produce a warning. | |
| 13767 * } | |
| 13768 * }); | |
| 13769 * | |
| 13770 * Note that the token() method returns tokens in a JSLint-compatible | |
| 13771 * format while the event emitter uses a slightly modified version of | |
| 13772 * Mozilla's JavaScript Parser API. Eventually, we will move away from | |
| 13773 * JSLint format. | |
| 13774 */ | |
| 13775 function Lexer(source) { | |
| 13776 var lines = source; | |
| 13777 | |
| 13778 if (typeof lines === "string") { | |
| 13779 lines = lines | |
| 13780 .replace(/\r\n/g, "\n") | |
| 13781 .replace(/\r/g, "\n") | |
| 13782 .split("\n"); | |
| 13783 } | |
| 13784 | |
| 13785 // If the first line is a shebang (#!), make it a blank and move on. | |
| 13786 // Shebangs are used by Node scripts. | |
| 13787 | |
| 13788 if (lines[0] && lines[0].substr(0, 2) === "#!") { | |
| 13789 if (lines[0].indexOf("node") !== -1) { | |
| 13790 state.option.node = true; | |
| 13791 } | |
| 13792 lines[0] = ""; | |
| 13793 } | |
| 13794 | |
| 13795 this.emitter = new events.EventEmitter(); | |
| 13796 this.source = source; | |
| 13797 this.setLines(lines); | |
| 13798 this.prereg = true; | |
| 13799 | |
| 13800 this.line = 0; | |
| 13801 this.char = 1; | |
| 13802 this.from = 1; | |
| 13803 this.input = ""; | |
| 13804 this.inComment = false; | |
| 13805 this.context = []; | |
| 13806 this.templateStarts = []; | |
| 13807 | |
| 13808 for (var i = 0; i < state.option.indent; i += 1) { | |
| 13809 state.tab += " "; | |
| 13810 } | |
| 13811 } | |
| 13812 | |
| 13813 Lexer.prototype = { | |
| 13814 _lines: [], | |
| 13815 | |
| 13816 inContext: function(ctxType) { | |
| 13817 return this.context.length > 0 && this.context[this.context.length - 1].type === ctxType; | |
| 13818 }, | |
| 13819 | |
| 13820 pushContext: function(ctxType) { | |
| 13821 this.context.push({ type: ctxType }); | |
| 13822 }, | |
| 13823 | |
| 13824 popContext: function() { | |
| 13825 return this.context.pop(); | |
| 13826 }, | |
| 13827 | |
| 13828 isContext: function(context) { | |
| 13829 return this.context.length > 0 && this.context[this.context.length - 1] === context; | |
| 13830 }, | |
| 13831 | |
| 13832 currentContext: function() { | |
| 13833 return this.context.length > 0 && this.context[this.context.length - 1]; | |
| 13834 }, | |
| 13835 | |
| 13836 getLines: function() { | |
| 13837 this._lines = state.lines; | |
| 13838 return this._lines; | |
| 13839 }, | |
| 13840 | |
| 13841 setLines: function(val) { | |
| 13842 this._lines = val; | |
| 13843 state.lines = this._lines; | |
| 13844 }, | |
| 13845 | |
| 13846 /* | |
| 13847 * Return the next i character without actually moving the | |
| 13848 * char pointer. | |
| 13849 */ | |
| 13850 peek: function(i) { | |
| 13851 return this.input.charAt(i || 0); | |
| 13852 }, | |
| 13853 | |
| 13854 /* | |
| 13855 * Move the char pointer forward i times. | |
| 13856 */ | |
| 13857 skip: function(i) { | |
| 13858 i = i || 1; | |
| 13859 this.char += i; | |
| 13860 this.input = this.input.slice(i); | |
| 13861 }, | |
| 13862 | |
| 13863 /* | |
| 13864 * Subscribe to a token event. The API for this method is similar | |
| 13865 * Underscore.js i.e. you can subscribe to multiple events with | |
| 13866 * one call: | |
| 13867 * | |
| 13868 * lex.on("Identifier Number", function(data) { | |
| 13869 * // ... | |
| 13870 * }); | |
| 13871 */ | |
| 13872 on: function(names, listener) { | |
| 13873 names.split(" ").forEach(function(name) { | |
| 13874 this.emitter.on(name, listener); | |
| 13875 }.bind(this)); | |
| 13876 }, | |
| 13877 | |
| 13878 /* | |
| 13879 * Trigger a token event. All arguments will be passed to each | |
| 13880 * listener. | |
| 13881 */ | |
| 13882 trigger: function() { | |
| 13883 this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments)); | |
| 13884 }, | |
| 13885 | |
| 13886 /* | |
| 13887 * Postpone a token event. the checking condition is set as | |
| 13888 * last parameter, and the trigger function is called in a | |
| 13889 * stored callback. To be later called using the check() function | |
| 13890 * by the parser. This avoids parser's peek() to give the lexer | |
| 13891 * a false context. | |
| 13892 */ | |
| 13893 triggerAsync: function(type, args, checks, fn) { | |
| 13894 checks.push(function() { | |
| 13895 if (fn()) { | |
| 13896 this.trigger(type, args); | |
| 13897 } | |
| 13898 }.bind(this)); | |
| 13899 }, | |
| 13900 | |
| 13901 /* | |
| 13902 * Extract a punctuator out of the next sequence of characters | |
| 13903 * or return 'null' if its not possible. | |
| 13904 * | |
| 13905 * This method's implementation was heavily influenced by the | |
| 13906 * scanPunctuator function in the Esprima parser's source code. | |
| 13907 */ | |
| 13908 scanPunctuator: function() { | |
| 13909 var ch1 = this.peek(); | |
| 13910 var ch2, ch3, ch4; | |
| 13911 | |
| 13912 switch (ch1) { | |
| 13913 // Most common single-character punctuators | |
| 13914 case ".": | |
| 13915 if ((/^[0-9]$/).test(this.peek(1))) { | |
| 13916 return null; | |
| 13917 } | |
| 13918 if (this.peek(1) === "." && this.peek(2) === ".") { | |
| 13919 return { | |
| 13920 type: Token.Punctuator, | |
| 13921 value: "..." | |
| 13922 }; | |
| 13923 } | |
| 13924 /* falls through */ | |
| 13925 case "(": | |
| 13926 case ")": | |
| 13927 case ";": | |
| 13928 case ",": | |
| 13929 case "[": | |
| 13930 case "]": | |
| 13931 case ":": | |
| 13932 case "~": | |
| 13933 case "?": | |
| 13934 return { | |
| 13935 type: Token.Punctuator, | |
| 13936 value: ch1 | |
| 13937 }; | |
| 13938 | |
| 13939 // A block/object opener | |
| 13940 case "{": | |
| 13941 this.pushContext(Context.Block); | |
| 13942 return { | |
| 13943 type: Token.Punctuator, | |
| 13944 value: ch1 | |
| 13945 }; | |
| 13946 | |
| 13947 // A block/object closer | |
| 13948 case "}": | |
| 13949 if (this.inContext(Context.Block)) { | |
| 13950 this.popContext(); | |
| 13951 } | |
| 13952 return { | |
| 13953 type: Token.Punctuator, | |
| 13954 value: ch1 | |
| 13955 }; | |
| 13956 | |
| 13957 // A pound sign (for Node shebangs) | |
| 13958 case "#": | |
| 13959 return { | |
| 13960 type: Token.Punctuator, | |
| 13961 value: ch1 | |
| 13962 }; | |
| 13963 | |
| 13964 // We're at the end of input | |
| 13965 case "": | |
| 13966 return null; | |
| 13967 } | |
| 13968 | |
| 13969 // Peek more characters | |
| 13970 | |
| 13971 ch2 = this.peek(1); | |
| 13972 ch3 = this.peek(2); | |
| 13973 ch4 = this.peek(3); | |
| 13974 | |
| 13975 // 4-character punctuator: >>>= | |
| 13976 | |
| 13977 if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") { | |
| 13978 return { | |
| 13979 type: Token.Punctuator, | |
| 13980 value: ">>>=" | |
| 13981 }; | |
| 13982 } | |
| 13983 | |
| 13984 // 3-character punctuators: === !== >>> <<= >>= | |
| 13985 | |
| 13986 if (ch1 === "=" && ch2 === "=" && ch3 === "=") { | |
| 13987 return { | |
| 13988 type: Token.Punctuator, | |
| 13989 value: "===" | |
| 13990 }; | |
| 13991 } | |
| 13992 | |
| 13993 if (ch1 === "!" && ch2 === "=" && ch3 === "=") { | |
| 13994 return { | |
| 13995 type: Token.Punctuator, | |
| 13996 value: "!==" | |
| 13997 }; | |
| 13998 } | |
| 13999 | |
| 14000 if (ch1 === ">" && ch2 === ">" && ch3 === ">") { | |
| 14001 return { | |
| 14002 type: Token.Punctuator, | |
| 14003 value: ">>>" | |
| 14004 }; | |
| 14005 } | |
| 14006 | |
| 14007 if (ch1 === "<" && ch2 === "<" && ch3 === "=") { | |
| 14008 return { | |
| 14009 type: Token.Punctuator, | |
| 14010 value: "<<=" | |
| 14011 }; | |
| 14012 } | |
| 14013 | |
| 14014 if (ch1 === ">" && ch2 === ">" && ch3 === "=") { | |
| 14015 return { | |
| 14016 type: Token.Punctuator, | |
| 14017 value: ">>=" | |
| 14018 }; | |
| 14019 } | |
| 14020 | |
| 14021 // Fat arrow punctuator | |
| 14022 if (ch1 === "=" && ch2 === ">") { | |
| 14023 return { | |
| 14024 type: Token.Punctuator, | |
| 14025 value: ch1 + ch2 | |
| 14026 }; | |
| 14027 } | |
| 14028 | |
| 14029 // 2-character punctuators: <= >= == != ++ -- << >> && || | |
| 14030 // += -= *= %= &= |= ^= /= | |
| 14031 if (ch1 === ch2 && ("+-<>&|".indexOf(ch1) >= 0)) { | |
| 14032 return { | |
| 14033 type: Token.Punctuator, | |
| 14034 value: ch1 + ch2 | |
| 14035 }; | |
| 14036 } | |
| 14037 | |
| 14038 if ("<>=!+-*%&|^/".indexOf(ch1) >= 0) { | |
| 14039 if (ch2 === "=") { | |
| 14040 return { | |
| 14041 type: Token.Punctuator, | |
| 14042 value: ch1 + ch2 | |
| 14043 }; | |
| 14044 } | |
| 14045 | |
| 14046 return { | |
| 14047 type: Token.Punctuator, | |
| 14048 value: ch1 | |
| 14049 }; | |
| 14050 } | |
| 14051 | |
| 14052 return null; | |
| 14053 }, | |
| 14054 | |
| 14055 /* | |
| 14056 * Extract a comment out of the next sequence of characters and/or | |
| 14057 * lines or return 'null' if its not possible. Since comments can | |
| 14058 * span across multiple lines this method has to move the char | |
| 14059 * pointer. | |
| 14060 * | |
| 14061 * In addition to normal JavaScript comments (// and /*) this method | |
| 14062 * also recognizes JSHint- and JSLint-specific comments such as | |
| 14063 * /*jshint, /*jslint, /*globals and so on. | |
| 14064 */ | |
| 14065 scanComments: function(checks) { | |
| 14066 var ch1 = this.peek(); | |
| 14067 var ch2 = this.peek(1); | |
| 14068 var rest = this.input.substr(2); | |
| 14069 var startLine = this.line; | |
| 14070 var startChar = this.char; | |
| 14071 var self = this; | |
| 14072 | |
| 14073 // Create a comment token object and make sure it | |
| 14074 // has all the data JSHint needs to work with special | |
| 14075 // comments. | |
| 14076 | |
| 14077 function commentToken(label, body, opt) { | |
| 14078 var special = ["jshint", "jslint", "members", "member", "globals", "global", "exported"]; | |
| 14079 var isSpecial = false; | |
| 14080 var value = label + body; | |
| 14081 var commentType = "plain"; | |
| 14082 opt = opt || {}; | |
| 14083 | |
| 14084 if (opt.isMultiline) { | |
| 14085 value += "*/"; | |
| 14086 } | |
| 14087 | |
| 14088 body = body.replace(/\n/g, " "); | |
| 14089 | |
| 14090 if (label === "/*" && reg.fallsThrough.test(body)) { | |
| 14091 isSpecial = true; | |
| 14092 commentType = "falls through"; | |
| 14093 } | |
| 14094 | |
| 14095 special.forEach(function(str) { | |
| 14096 if (isSpecial) { | |
| 14097 return; | |
| 14098 } | |
| 14099 | |
| 14100 // Don't recognize any special comments other than jshint for single-line | |
| 14101 // comments. This introduced many problems with legit comments. | |
| 14102 if (label === "//" && str !== "jshint") { | |
| 14103 return; | |
| 14104 } | |
| 14105 | |
| 14106 if (body.charAt(str.length) === " " && body.substr(0, str.length) === str) { | |
| 14107 isSpecial = true; | |
| 14108 label = label + str; | |
| 14109 body = body.substr(str.length); | |
| 14110 } | |
| 14111 | |
| 14112 if (!isSpecial && body.charAt(0) === " " && body.charAt(str.length + 1) === " " && | |
| 14113 body.substr(1, str.length) === str) { | |
| 14114 isSpecial = true; | |
| 14115 label = label + " " + str; | |
| 14116 body = body.substr(str.length + 1); | |
| 14117 } | |
| 14118 | |
| 14119 if (!isSpecial) { | |
| 14120 return; | |
| 14121 } | |
| 14122 | |
| 14123 switch (str) { | |
| 14124 case "member": | |
| 14125 commentType = "members"; | |
| 14126 break; | |
| 14127 case "global": | |
| 14128 commentType = "globals"; | |
| 14129 break; | |
| 14130 default: | |
| 14131 var options = body.split(":").map(function(v) { | |
| 14132 return v.replace(/^\s+/, "").replace(/\s+$/, ""); | |
| 14133 }); | |
| 14134 | |
| 14135 if (options.length === 2) { | |
| 14136 switch (options[0]) { | |
| 14137 case "ignore": | |
| 14138 switch (options[1]) { | |
| 14139 case "start": | |
| 14140 self.ignoringLinterErrors = true; | |
| 14141 isSpecial = false; | |
| 14142 break; | |
| 14143 case "end": | |
| 14144 self.ignoringLinterErrors = false; | |
| 14145 isSpecial = false; | |
| 14146 break; | |
| 14147 } | |
| 14148 } | |
| 14149 } | |
| 14150 | |
| 14151 commentType = str; | |
| 14152 } | |
| 14153 }); | |
| 14154 | |
| 14155 return { | |
| 14156 type: Token.Comment, | |
| 14157 commentType: commentType, | |
| 14158 value: value, | |
| 14159 body: body, | |
| 14160 isSpecial: isSpecial, | |
| 14161 isMultiline: opt.isMultiline || false, | |
| 14162 isMalformed: opt.isMalformed || false | |
| 14163 }; | |
| 14164 } | |
| 14165 | |
| 14166 // End of unbegun comment. Raise an error and skip that input. | |
| 14167 if (ch1 === "*" && ch2 === "/") { | |
| 14168 this.trigger("error", { | |
| 14169 code: "E018", | |
| 14170 line: startLine, | |
| 14171 character: startChar | |
| 14172 }); | |
| 14173 | |
| 14174 this.skip(2); | |
| 14175 return null; | |
| 14176 } | |
| 14177 | |
| 14178 // Comments must start either with // or /* | |
| 14179 if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) { | |
| 14180 return null; | |
| 14181 } | |
| 14182 | |
| 14183 // One-line comment | |
| 14184 if (ch2 === "/") { | |
| 14185 this.skip(this.input.length); // Skip to the EOL. | |
| 14186 return commentToken("//", rest); | |
| 14187 } | |
| 14188 | |
| 14189 var body = ""; | |
| 14190 | |
| 14191 /* Multi-line comment */ | |
| 14192 if (ch2 === "*") { | |
| 14193 this.inComment = true; | |
| 14194 this.skip(2); | |
| 14195 | |
| 14196 while (this.peek() !== "*" || this.peek(1) !== "/") { | |
| 14197 if (this.peek() === "") { // End of Line | |
| 14198 body += "\n"; | |
| 14199 | |
| 14200 // If we hit EOF and our comment is still unclosed, | |
| 14201 // trigger an error and end the comment implicitly. | |
| 14202 if (!this.nextLine(checks)) { | |
| 14203 this.trigger("error", { | |
| 14204 code: "E017", | |
| 14205 line: startLine, | |
| 14206 character: startChar | |
| 14207 }); | |
| 14208 | |
| 14209 this.inComment = false; | |
| 14210 return commentToken("/*", body, { | |
| 14211 isMultiline: true, | |
| 14212 isMalformed: true | |
| 14213 }); | |
| 14214 } | |
| 14215 } else { | |
| 14216 body += this.peek(); | |
| 14217 this.skip(); | |
| 14218 } | |
| 14219 } | |
| 14220 | |
| 14221 this.skip(2); | |
| 14222 this.inComment = false; | |
| 14223 return commentToken("/*", body, { isMultiline: true }); | |
| 14224 } | |
| 14225 }, | |
| 14226 | |
| 14227 /* | |
| 14228 * Extract a keyword out of the next sequence of characters or | |
| 14229 * return 'null' if its not possible. | |
| 14230 */ | |
| 14231 scanKeyword: function() { | |
| 14232 var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input); | |
| 14233 var keywords = [ | |
| 14234 "if", "in", "do", "var", "for", "new", | |
| 14235 "try", "let", "this", "else", "case", | |
| 14236 "void", "with", "enum", "while", "break", | |
| 14237 "catch", "throw", "const", "yield", "class", | |
| 14238 "super", "return", "typeof", "delete", | |
| 14239 "switch", "export", "import", "default", | |
| 14240 "finally", "extends", "function", "continue", | |
| 14241 "debugger", "instanceof" | |
| 14242 ]; | |
| 14243 | |
| 14244 if (result && keywords.indexOf(result[0]) >= 0) { | |
| 14245 return { | |
| 14246 type: Token.Keyword, | |
| 14247 value: result[0] | |
| 14248 }; | |
| 14249 } | |
| 14250 | |
| 14251 return null; | |
| 14252 }, | |
| 14253 | |
| 14254 /* | |
| 14255 * Extract a JavaScript identifier out of the next sequence of | |
| 14256 * characters or return 'null' if its not possible. In addition, | |
| 14257 * to Identifier this method can also produce BooleanLiteral | |
| 14258 * (true/false) and NullLiteral (null). | |
| 14259 */ | |
| 14260 scanIdentifier: function() { | |
| 14261 var id = ""; | |
| 14262 var index = 0; | |
| 14263 var type, char; | |
| 14264 | |
| 14265 function isNonAsciiIdentifierStart(code) { | |
| 14266 return nonAsciiIdentifierStartTable.indexOf(code) > -1; | |
| 14267 } | |
| 14268 | |
| 14269 function isNonAsciiIdentifierPart(code) { | |
| 14270 return isNonAsciiIdentifierStart(code) || nonAsciiIdentifierPartTable.indexOf(code) > -1; | |
| 14271 } | |
| 14272 | |
| 14273 var readUnicodeEscapeSequence = function() { | |
| 14274 /*jshint validthis:true */ | |
| 14275 index += 1; | |
| 14276 | |
| 14277 if (this.peek(index) !== "u") { | |
| 14278 return null; | |
| 14279 } | |
| 14280 | |
| 14281 var sequence = this.peek(index + 1) + this.peek(index + 2) + | |
| 14282 this.peek(index + 3) + this.peek(index + 4); | |
| 14283 var code; | |
| 14284 | |
| 14285 if (isHex(sequence)) { | |
| 14286 code = parseInt(sequence, 16); | |
| 14287 | |
| 14288 if (asciiIdentifierPartTable[code] || isNonAsciiIdentifierPart(code)) { | |
| 14289 index += 5; | |
| 14290 return "\\u" + sequence; | |
| 14291 } | |
| 14292 | |
| 14293 return null; | |
| 14294 } | |
| 14295 | |
| 14296 return null; | |
| 14297 }.bind(this); | |
| 14298 | |
| 14299 var getIdentifierStart = function() { | |
| 14300 /*jshint validthis:true */ | |
| 14301 var chr = this.peek(index); | |
| 14302 var code = chr.charCodeAt(0); | |
| 14303 | |
| 14304 if (code === 92) { | |
| 14305 return readUnicodeEscapeSequence(); | |
| 14306 } | |
| 14307 | |
| 14308 if (code < 128) { | |
| 14309 if (asciiIdentifierStartTable[code]) { | |
| 14310 index += 1; | |
| 14311 return chr; | |
| 14312 } | |
| 14313 | |
| 14314 return null; | |
| 14315 } | |
| 14316 | |
| 14317 if (isNonAsciiIdentifierStart(code)) { | |
| 14318 index += 1; | |
| 14319 return chr; | |
| 14320 } | |
| 14321 | |
| 14322 return null; | |
| 14323 }.bind(this); | |
| 14324 | |
| 14325 var getIdentifierPart = function() { | |
| 14326 /*jshint validthis:true */ | |
| 14327 var chr = this.peek(index); | |
| 14328 var code = chr.charCodeAt(0); | |
| 14329 | |
| 14330 if (code === 92) { | |
| 14331 return readUnicodeEscapeSequence(); | |
| 14332 } | |
| 14333 | |
| 14334 if (code < 128) { | |
| 14335 if (asciiIdentifierPartTable[code]) { | |
| 14336 index += 1; | |
| 14337 return chr; | |
| 14338 } | |
| 14339 | |
| 14340 return null; | |
| 14341 } | |
| 14342 | |
| 14343 if (isNonAsciiIdentifierPart(code)) { | |
| 14344 index += 1; | |
| 14345 return chr; | |
| 14346 } | |
| 14347 | |
| 14348 return null; | |
| 14349 }.bind(this); | |
| 14350 | |
| 14351 function removeEscapeSequences(id) { | |
| 14352 return id.replace(/\\u([0-9a-fA-F]{4})/g, function(m0, codepoint) { | |
| 14353 return String.fromCharCode(parseInt(codepoint, 16)); | |
| 14354 }); | |
| 14355 } | |
| 14356 | |
| 14357 char = getIdentifierStart(); | |
| 14358 if (char === null) { | |
| 14359 return null; | |
| 14360 } | |
| 14361 | |
| 14362 id = char; | |
| 14363 for (;;) { | |
| 14364 char = getIdentifierPart(); | |
| 14365 | |
| 14366 if (char === null) { | |
| 14367 break; | |
| 14368 } | |
| 14369 | |
| 14370 id += char; | |
| 14371 } | |
| 14372 | |
| 14373 switch (id) { | |
| 14374 case "true": | |
| 14375 case "false": | |
| 14376 type = Token.BooleanLiteral; | |
| 14377 break; | |
| 14378 case "null": | |
| 14379 type = Token.NullLiteral; | |
| 14380 break; | |
| 14381 default: | |
| 14382 type = Token.Identifier; | |
| 14383 } | |
| 14384 | |
| 14385 return { | |
| 14386 type: type, | |
| 14387 value: removeEscapeSequences(id), | |
| 14388 text: id, | |
| 14389 tokenLength: id.length | |
| 14390 }; | |
| 14391 }, | |
| 14392 | |
| 14393 /* | |
| 14394 * Extract a numeric literal out of the next sequence of | |
| 14395 * characters or return 'null' if its not possible. This method | |
| 14396 * supports all numeric literals described in section 7.8.3 | |
| 14397 * of the EcmaScript 5 specification. | |
| 14398 * | |
| 14399 * This method's implementation was heavily influenced by the | |
| 14400 * scanNumericLiteral function in the Esprima parser's source code. | |
| 14401 */ | |
| 14402 scanNumericLiteral: function(checks) { | |
| 14403 var index = 0; | |
| 14404 var value = ""; | |
| 14405 var length = this.input.length; | |
| 14406 var char = this.peek(index); | |
| 14407 var bad; | |
| 14408 var isAllowedDigit = isDecimalDigit; | |
| 14409 var base = 10; | |
| 14410 var isLegacy = false; | |
| 14411 | |
| 14412 function isDecimalDigit(str) { | |
| 14413 return (/^[0-9]$/).test(str); | |
| 14414 } | |
| 14415 | |
| 14416 function isOctalDigit(str) { | |
| 14417 return (/^[0-7]$/).test(str); | |
| 14418 } | |
| 14419 | |
| 14420 function isBinaryDigit(str) { | |
| 14421 return (/^[01]$/).test(str); | |
| 14422 } | |
| 14423 | |
| 14424 function isIdentifierStart(ch) { | |
| 14425 return (ch === "$") || (ch === "_") || (ch === "\\") || | |
| 14426 (ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z"); | |
| 14427 } | |
| 14428 | |
| 14429 // Numbers must start either with a decimal digit or a point. | |
| 14430 | |
| 14431 if (char !== "." && !isDecimalDigit(char)) { | |
| 14432 return null; | |
| 14433 } | |
| 14434 | |
| 14435 if (char !== ".") { | |
| 14436 value = this.peek(index); | |
| 14437 index += 1; | |
| 14438 char = this.peek(index); | |
| 14439 | |
| 14440 if (value === "0") { | |
| 14441 // Base-16 numbers. | |
| 14442 if (char === "x" || char === "X") { | |
| 14443 isAllowedDigit = isHexDigit; | |
| 14444 base = 16; | |
| 14445 | |
| 14446 index += 1; | |
| 14447 value += char; | |
| 14448 } | |
| 14449 | |
| 14450 // Base-8 numbers. | |
| 14451 if (char === "o" || char === "O") { | |
| 14452 isAllowedDigit = isOctalDigit; | |
| 14453 base = 8; | |
| 14454 | |
| 14455 if (!state.inES6(true)) { | |
| 14456 this.triggerAsync( | |
| 14457 "warning", | |
| 14458 { | |
| 14459 code: "W119", | |
| 14460 line: this.line, | |
| 14461 character: this.char, | |
| 14462 data: [ "Octal integer literal", "6" ] | |
| 14463 }, | |
| 14464 checks, | |
| 14465 function() { return true; } | |
| 14466 ); | |
| 14467 } | |
| 14468 | |
| 14469 index += 1; | |
| 14470 value += char; | |
| 14471 } | |
| 14472 | |
| 14473 // Base-2 numbers. | |
| 14474 if (char === "b" || char === "B") { | |
| 14475 isAllowedDigit = isBinaryDigit; | |
| 14476 base = 2; | |
| 14477 | |
| 14478 if (!state.inES6(true)) { | |
| 14479 this.triggerAsync( | |
| 14480 "warning", | |
| 14481 { | |
| 14482 code: "W119", | |
| 14483 line: this.line, | |
| 14484 character: this.char, | |
| 14485 data: [ "Binary integer literal", "6" ] | |
| 14486 }, | |
| 14487 checks, | |
| 14488 function() { return true; } | |
| 14489 ); | |
| 14490 } | |
| 14491 | |
| 14492 index += 1; | |
| 14493 value += char; | |
| 14494 } | |
| 14495 | |
| 14496 // Legacy base-8 numbers. | |
| 14497 if (isOctalDigit(char)) { | |
| 14498 isAllowedDigit = isOctalDigit; | |
| 14499 base = 8; | |
| 14500 isLegacy = true; | |
| 14501 bad = false; | |
| 14502 | |
| 14503 index += 1; | |
| 14504 value += char; | |
| 14505 } | |
| 14506 | |
| 14507 // Decimal numbers that start with '0' such as '09' are illegal | |
| 14508 // but we still parse them and return as malformed. | |
| 14509 | |
| 14510 if (!isOctalDigit(char) && isDecimalDigit(char)) { | |
| 14511 index += 1; | |
| 14512 value += char; | |
| 14513 } | |
| 14514 } | |
| 14515 | |
| 14516 while (index < length) { | |
| 14517 char = this.peek(index); | |
| 14518 | |
| 14519 if (isLegacy && isDecimalDigit(char)) { | |
| 14520 // Numbers like '019' (note the 9) are not valid octals | |
| 14521 // but we still parse them and mark as malformed. | |
| 14522 bad = true; | |
| 14523 } else if (!isAllowedDigit(char)) { | |
| 14524 break; | |
| 14525 } | |
| 14526 value += char; | |
| 14527 index += 1; | |
| 14528 } | |
| 14529 | |
| 14530 if (isAllowedDigit !== isDecimalDigit) { | |
| 14531 if (!isLegacy && value.length <= 2) { // 0x | |
| 14532 return { | |
| 14533 type: Token.NumericLiteral, | |
| 14534 value: value, | |
| 14535 isMalformed: true | |
| 14536 }; | |
| 14537 } | |
| 14538 | |
| 14539 if (index < length) { | |
| 14540 char = this.peek(index); | |
| 14541 if (isIdentifierStart(char)) { | |
| 14542 return null; | |
| 14543 } | |
| 14544 } | |
| 14545 | |
| 14546 return { | |
| 14547 type: Token.NumericLiteral, | |
| 14548 value: value, | |
| 14549 base: base, | |
| 14550 isLegacy: isLegacy, | |
| 14551 isMalformed: false | |
| 14552 }; | |
| 14553 } | |
| 14554 } | |
| 14555 | |
| 14556 // Decimal digits. | |
| 14557 | |
| 14558 if (char === ".") { | |
| 14559 value += char; | |
| 14560 index += 1; | |
| 14561 | |
| 14562 while (index < length) { | |
| 14563 char = this.peek(index); | |
| 14564 if (!isDecimalDigit(char)) { | |
| 14565 break; | |
| 14566 } | |
| 14567 value += char; | |
| 14568 index += 1; | |
| 14569 } | |
| 14570 } | |
| 14571 | |
| 14572 // Exponent part. | |
| 14573 | |
| 14574 if (char === "e" || char === "E") { | |
| 14575 value += char; | |
| 14576 index += 1; | |
| 14577 char = this.peek(index); | |
| 14578 | |
| 14579 if (char === "+" || char === "-") { | |
| 14580 value += this.peek(index); | |
| 14581 index += 1; | |
| 14582 } | |
| 14583 | |
| 14584 char = this.peek(index); | |
| 14585 if (isDecimalDigit(char)) { | |
| 14586 value += char; | |
| 14587 index += 1; | |
| 14588 | |
| 14589 while (index < length) { | |
| 14590 char = this.peek(index); | |
| 14591 if (!isDecimalDigit(char)) { | |
| 14592 break; | |
| 14593 } | |
| 14594 value += char; | |
| 14595 index += 1; | |
| 14596 } | |
| 14597 } else { | |
| 14598 return null; | |
| 14599 } | |
| 14600 } | |
| 14601 | |
| 14602 if (index < length) { | |
| 14603 char = this.peek(index); | |
| 14604 if (isIdentifierStart(char)) { | |
| 14605 return null; | |
| 14606 } | |
| 14607 } | |
| 14608 | |
| 14609 return { | |
| 14610 type: Token.NumericLiteral, | |
| 14611 value: value, | |
| 14612 base: base, | |
| 14613 isMalformed: !isFinite(value) | |
| 14614 }; | |
| 14615 }, | |
| 14616 | |
| 14617 | |
| 14618 // Assumes previously parsed character was \ (=== '\\') and was not skipped. | |
| 14619 scanEscapeSequence: function(checks) { | |
| 14620 var allowNewLine = false; | |
| 14621 var jump = 1; | |
| 14622 this.skip(); | |
| 14623 var char = this.peek(); | |
| 14624 | |
| 14625 switch (char) { | |
| 14626 case "'": | |
| 14627 this.triggerAsync("warning", { | |
| 14628 code: "W114", | |
| 14629 line: this.line, | |
| 14630 character: this.char, | |
| 14631 data: [ "\\'" ] | |
| 14632 }, checks, function() {return state.jsonMode; }); | |
| 14633 break; | |
| 14634 case "b": | |
| 14635 char = "\\b"; | |
| 14636 break; | |
| 14637 case "f": | |
| 14638 char = "\\f"; | |
| 14639 break; | |
| 14640 case "n": | |
| 14641 char = "\\n"; | |
| 14642 break; | |
| 14643 case "r": | |
| 14644 char = "\\r"; | |
| 14645 break; | |
| 14646 case "t": | |
| 14647 char = "\\t"; | |
| 14648 break; | |
| 14649 case "0": | |
| 14650 char = "\\0"; | |
| 14651 | |
| 14652 // Octal literals fail in strict mode. | |
| 14653 // Check if the number is between 00 and 07. | |
| 14654 var n = parseInt(this.peek(1), 10); | |
| 14655 this.triggerAsync("warning", { | |
| 14656 code: "W115", | |
| 14657 line: this.line, | |
| 14658 character: this.char | |
| 14659 }, checks, | |
| 14660 function() { return n >= 0 && n <= 7 && state.isStrict(); }); | |
| 14661 break; | |
| 14662 case "1": | |
| 14663 case "2": | |
| 14664 case "3": | |
| 14665 case "4": | |
| 14666 case "5": | |
| 14667 case "6": | |
| 14668 case "7": | |
| 14669 char = "\\" + char; | |
| 14670 this.triggerAsync("warning", { | |
| 14671 code: "W115", | |
| 14672 line: this.line, | |
| 14673 character: this.char | |
| 14674 }, checks, | |
| 14675 function() { return state.isStrict(); }); | |
| 14676 break; | |
| 14677 case "u": | |
| 14678 var sequence = this.input.substr(1, 4); | |
| 14679 var code = parseInt(sequence, 16); | |
| 14680 if (!isHex(sequence)) { | |
| 14681 // This condition unequivocally describes a syntax error. | |
| 14682 // TODO: Re-factor as an "error" (not a "warning"). | |
| 14683 this.trigger("warning", { | |
| 14684 code: "W052", | |
| 14685 line: this.line, | |
| 14686 character: this.char, | |
| 14687 data: [ "u" + sequence ] | |
| 14688 }); | |
| 14689 } | |
| 14690 char = String.fromCharCode(code); | |
| 14691 jump = 5; | |
| 14692 break; | |
| 14693 case "v": | |
| 14694 this.triggerAsync("warning", { | |
| 14695 code: "W114", | |
| 14696 line: this.line, | |
| 14697 character: this.char, | |
| 14698 data: [ "\\v" ] | |
| 14699 }, checks, function() { return state.jsonMode; }); | |
| 14700 | |
| 14701 char = "\v"; | |
| 14702 break; | |
| 14703 case "x": | |
| 14704 var x = parseInt(this.input.substr(1, 2), 16); | |
| 14705 | |
| 14706 this.triggerAsync("warning", { | |
| 14707 code: "W114", | |
| 14708 line: this.line, | |
| 14709 character: this.char, | |
| 14710 data: [ "\\x-" ] | |
| 14711 }, checks, function() { return state.jsonMode; }); | |
| 14712 | |
| 14713 char = String.fromCharCode(x); | |
| 14714 jump = 3; | |
| 14715 break; | |
| 14716 case "\\": | |
| 14717 char = "\\\\"; | |
| 14718 break; | |
| 14719 case "\"": | |
| 14720 char = "\\\""; | |
| 14721 break; | |
| 14722 case "/": | |
| 14723 break; | |
| 14724 case "": | |
| 14725 allowNewLine = true; | |
| 14726 char = ""; | |
| 14727 break; | |
| 14728 } | |
| 14729 | |
| 14730 return { char: char, jump: jump, allowNewLine: allowNewLine }; | |
| 14731 }, | |
| 14732 | |
| 14733 /* | |
| 14734 * Extract a template literal out of the next sequence of characters | |
| 14735 * and/or lines or return 'null' if its not possible. Since template | |
| 14736 * literals can span across multiple lines, this method has to move | |
| 14737 * the char pointer. | |
| 14738 */ | |
| 14739 scanTemplateLiteral: function(checks) { | |
| 14740 var tokenType; | |
| 14741 var value = ""; | |
| 14742 var ch; | |
| 14743 var startLine = this.line; | |
| 14744 var startChar = this.char; | |
| 14745 var depth = this.templateStarts.length; | |
| 14746 | |
| 14747 if (this.peek() === "`") { | |
| 14748 if (!state.inES6(true)) { | |
| 14749 this.triggerAsync( | |
| 14750 "warning", | |
| 14751 { | |
| 14752 code: "W119", | |
| 14753 line: this.line, | |
| 14754 character: this.char, | |
| 14755 data: ["template literal syntax", "6"] | |
| 14756 }, | |
| 14757 checks, | |
| 14758 function() { return true; } | |
| 14759 ); | |
| 14760 } | |
| 14761 // Template must start with a backtick. | |
| 14762 tokenType = Token.TemplateHead; | |
| 14763 this.templateStarts.push({ line: this.line, char: this.char }); | |
| 14764 depth = this.templateStarts.length; | |
| 14765 this.skip(1); | |
| 14766 this.pushContext(Context.Template); | |
| 14767 } else if (this.inContext(Context.Template) && this.peek() === "}") { | |
| 14768 // If we're in a template context, and we have a '}', lex a TemplateMiddle. | |
| 14769 tokenType = Token.TemplateMiddle; | |
| 14770 } else { | |
| 14771 // Go lex something else. | |
| 14772 return null; | |
| 14773 } | |
| 14774 | |
| 14775 while (this.peek() !== "`") { | |
| 14776 while ((ch = this.peek()) === "") { | |
| 14777 value += "\n"; | |
| 14778 if (!this.nextLine(checks)) { | |
| 14779 // Unclosed template literal --- point to the starting "`" | |
| 14780 var startPos = this.templateStarts.pop(); | |
| 14781 this.trigger("error", { | |
| 14782 code: "E052", | |
| 14783 line: startPos.line, | |
| 14784 character: startPos.char | |
| 14785 }); | |
| 14786 return { | |
| 14787 type: tokenType, | |
| 14788 value: value, | |
| 14789 startLine: startLine, | |
| 14790 startChar: startChar, | |
| 14791 isUnclosed: true, | |
| 14792 depth: depth, | |
| 14793 context: this.popContext() | |
| 14794 }; | |
| 14795 } | |
| 14796 } | |
| 14797 | |
| 14798 if (ch === '$' && this.peek(1) === '{') { | |
| 14799 value += '${'; | |
| 14800 this.skip(2); | |
| 14801 return { | |
| 14802 type: tokenType, | |
| 14803 value: value, | |
| 14804 startLine: startLine, | |
| 14805 startChar: startChar, | |
| 14806 isUnclosed: false, | |
| 14807 depth: depth, | |
| 14808 context: this.currentContext() | |
| 14809 }; | |
| 14810 } else if (ch === '\\') { | |
| 14811 var escape = this.scanEscapeSequence(checks); | |
| 14812 value += escape.char; | |
| 14813 this.skip(escape.jump); | |
| 14814 } else if (ch !== '`') { | |
| 14815 // Otherwise, append the value and continue. | |
| 14816 value += ch; | |
| 14817 this.skip(1); | |
| 14818 } | |
| 14819 } | |
| 14820 | |
| 14821 // Final value is either NoSubstTemplate or TemplateTail | |
| 14822 tokenType = tokenType === Token.TemplateHead ? Token.NoSubstTemplate : Token.TemplateTail; | |
| 14823 this.skip(1); | |
| 14824 this.templateStarts.pop(); | |
| 14825 | |
| 14826 return { | |
| 14827 type: tokenType, | |
| 14828 value: value, | |
| 14829 startLine: startLine, | |
| 14830 startChar: startChar, | |
| 14831 isUnclosed: false, | |
| 14832 depth: depth, | |
| 14833 context: this.popContext() | |
| 14834 }; | |
| 14835 }, | |
| 14836 | |
| 14837 /* | |
| 14838 * Extract a string out of the next sequence of characters and/or | |
| 14839 * lines or return 'null' if its not possible. Since strings can | |
| 14840 * span across multiple lines this method has to move the char | |
| 14841 * pointer. | |
| 14842 * | |
| 14843 * This method recognizes pseudo-multiline JavaScript strings: | |
| 14844 * | |
| 14845 * var str = "hello\ | |
| 14846 * world"; | |
| 14847 */ | |
| 14848 scanStringLiteral: function(checks) { | |
| 14849 /*jshint loopfunc:true */ | |
| 14850 var quote = this.peek(); | |
| 14851 | |
| 14852 // String must start with a quote. | |
| 14853 if (quote !== "\"" && quote !== "'") { | |
| 14854 return null; | |
| 14855 } | |
| 14856 | |
| 14857 // In JSON strings must always use double quotes. | |
| 14858 this.triggerAsync("warning", { | |
| 14859 code: "W108", | |
| 14860 line: this.line, | |
| 14861 character: this.char // +1? | |
| 14862 }, checks, function() { return state.jsonMode && quote !== "\""; }); | |
| 14863 | |
| 14864 var value = ""; | |
| 14865 var startLine = this.line; | |
| 14866 var startChar = this.char; | |
| 14867 var allowNewLine = false; | |
| 14868 | |
| 14869 this.skip(); | |
| 14870 | |
| 14871 while (this.peek() !== quote) { | |
| 14872 if (this.peek() === "") { // End Of Line | |
| 14873 | |
| 14874 // If an EOL is not preceded by a backslash, show a warning | |
| 14875 // and proceed like it was a legit multi-line string where | |
| 14876 // author simply forgot to escape the newline symbol. | |
| 14877 // | |
| 14878 // Another approach is to implicitly close a string on EOL | |
| 14879 // but it generates too many false positives. | |
| 14880 | |
| 14881 if (!allowNewLine) { | |
| 14882 // This condition unequivocally describes a syntax error. | |
| 14883 // TODO: Re-factor as an "error" (not a "warning"). | |
| 14884 this.trigger("warning", { | |
| 14885 code: "W112", | |
| 14886 line: this.line, | |
| 14887 character: this.char | |
| 14888 }); | |
| 14889 } else { | |
| 14890 allowNewLine = false; | |
| 14891 | |
| 14892 // Otherwise show a warning if multistr option was not set. | |
| 14893 // For JSON, show warning no matter what. | |
| 14894 | |
| 14895 this.triggerAsync("warning", { | |
| 14896 code: "W043", | |
| 14897 line: this.line, | |
| 14898 character: this.char | |
| 14899 }, checks, function() { return !state.option.multistr; }); | |
| 14900 | |
| 14901 this.triggerAsync("warning", { | |
| 14902 code: "W042", | |
| 14903 line: this.line, | |
| 14904 character: this.char | |
| 14905 }, checks, function() { return state.jsonMode && state.option.multistr; }); | |
| 14906 } | |
| 14907 | |
| 14908 // If we get an EOF inside of an unclosed string, show an | |
| 14909 // error and implicitly close it at the EOF point. | |
| 14910 | |
| 14911 if (!this.nextLine(checks)) { | |
| 14912 this.trigger("error", { | |
| 14913 code: "E029", | |
| 14914 line: startLine, | |
| 14915 character: startChar | |
| 14916 }); | |
| 14917 | |
| 14918 return { | |
| 14919 type: Token.StringLiteral, | |
| 14920 value: value, | |
| 14921 startLine: startLine, | |
| 14922 startChar: startChar, | |
| 14923 isUnclosed: true, | |
| 14924 quote: quote | |
| 14925 }; | |
| 14926 } | |
| 14927 | |
| 14928 } else { // Any character other than End Of Line | |
| 14929 | |
| 14930 allowNewLine = false; | |
| 14931 var char = this.peek(); | |
| 14932 var jump = 1; // A length of a jump, after we're done | |
| 14933 // parsing this character. | |
| 14934 | |
| 14935 if (char < " ") { | |
| 14936 // Warn about a control character in a string. | |
| 14937 this.triggerAsync( | |
| 14938 "warning", | |
| 14939 { | |
| 14940 code: "W113", | |
| 14941 line: this.line, | |
| 14942 character: this.char, | |
| 14943 data: [ "<non-printable>" ] | |
| 14944 }, | |
| 14945 checks, | |
| 14946 function() { return true; } | |
| 14947 ); | |
| 14948 } | |
| 14949 | |
| 14950 // Special treatment for some escaped characters. | |
| 14951 if (char === "\\") { | |
| 14952 var parsed = this.scanEscapeSequence(checks); | |
| 14953 char = parsed.char; | |
| 14954 jump = parsed.jump; | |
| 14955 allowNewLine = parsed.allowNewLine; | |
| 14956 } | |
| 14957 | |
| 14958 value += char; | |
| 14959 this.skip(jump); | |
| 14960 } | |
| 14961 } | |
| 14962 | |
| 14963 this.skip(); | |
| 14964 return { | |
| 14965 type: Token.StringLiteral, | |
| 14966 value: value, | |
| 14967 startLine: startLine, | |
| 14968 startChar: startChar, | |
| 14969 isUnclosed: false, | |
| 14970 quote: quote | |
| 14971 }; | |
| 14972 }, | |
| 14973 | |
| 14974 /* | |
| 14975 * Extract a regular expression out of the next sequence of | |
| 14976 * characters and/or lines or return 'null' if its not possible. | |
| 14977 * | |
| 14978 * This method is platform dependent: it accepts almost any | |
| 14979 * regular expression values but then tries to compile and run | |
| 14980 * them using system's RegExp object. This means that there are | |
| 14981 * rare edge cases where one JavaScript engine complains about | |
| 14982 * your regular expression while others don't. | |
| 14983 */ | |
| 14984 scanRegExp: function(checks) { | |
| 14985 var index = 0; | |
| 14986 var length = this.input.length; | |
| 14987 var char = this.peek(); | |
| 14988 var value = char; | |
| 14989 var body = ""; | |
| 14990 var flags = []; | |
| 14991 var malformed = false; | |
| 14992 var isCharSet = false; | |
| 14993 var terminated, malformedDesc; | |
| 14994 | |
| 14995 var scanUnexpectedChars = function() { | |
| 14996 // Unexpected control character | |
| 14997 if (char < " ") { | |
| 14998 malformed = true; | |
| 14999 this.triggerAsync( | |
| 15000 "warning", | |
| 15001 { | |
| 15002 code: "W048", | |
| 15003 line: this.line, | |
| 15004 character: this.char | |
| 15005 }, | |
| 15006 checks, | |
| 15007 function() { return true; } | |
| 15008 ); | |
| 15009 } | |
| 15010 | |
| 15011 // Unexpected escaped character | |
| 15012 if (char === "<") { | |
| 15013 malformed = true; | |
| 15014 this.triggerAsync( | |
| 15015 "warning", | |
| 15016 { | |
| 15017 code: "W049", | |
| 15018 line: this.line, | |
| 15019 character: this.char, | |
| 15020 data: [ char ] | |
| 15021 }, | |
| 15022 checks, | |
| 15023 function() { return true; } | |
| 15024 ); | |
| 15025 } | |
| 15026 }.bind(this); | |
| 15027 | |
| 15028 // Regular expressions must start with '/' | |
| 15029 if (!this.prereg || char !== "/") { | |
| 15030 return null; | |
| 15031 } | |
| 15032 | |
| 15033 index += 1; | |
| 15034 terminated = false; | |
| 15035 | |
| 15036 // Try to get everything in between slashes. A couple of | |
| 15037 // cases aside (see scanUnexpectedChars) we don't really | |
| 15038 // care whether the resulting expression is valid or not. | |
| 15039 // We will check that later using the RegExp object. | |
| 15040 | |
| 15041 while (index < length) { | |
| 15042 char = this.peek(index); | |
| 15043 value += char; | |
| 15044 body += char; | |
| 15045 | |
| 15046 if (isCharSet) { | |
| 15047 if (char === "]") { | |
| 15048 if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") { | |
| 15049 isCharSet = false; | |
| 15050 } | |
| 15051 } | |
| 15052 | |
| 15053 if (char === "\\") { | |
| 15054 index += 1; | |
| 15055 char = this.peek(index); | |
| 15056 body += char; | |
| 15057 value += char; | |
| 15058 | |
| 15059 scanUnexpectedChars(); | |
| 15060 } | |
| 15061 | |
| 15062 index += 1; | |
| 15063 continue; | |
| 15064 } | |
| 15065 | |
| 15066 if (char === "\\") { | |
| 15067 index += 1; | |
| 15068 char = this.peek(index); | |
| 15069 body += char; | |
| 15070 value += char; | |
| 15071 | |
| 15072 scanUnexpectedChars(); | |
| 15073 | |
| 15074 if (char === "/") { | |
| 15075 index += 1; | |
| 15076 continue; | |
| 15077 } | |
| 15078 | |
| 15079 if (char === "[") { | |
| 15080 index += 1; | |
| 15081 continue; | |
| 15082 } | |
| 15083 } | |
| 15084 | |
| 15085 if (char === "[") { | |
| 15086 isCharSet = true; | |
| 15087 index += 1; | |
| 15088 continue; | |
| 15089 } | |
| 15090 | |
| 15091 if (char === "/") { | |
| 15092 body = body.substr(0, body.length - 1); | |
| 15093 terminated = true; | |
| 15094 index += 1; | |
| 15095 break; | |
| 15096 } | |
| 15097 | |
| 15098 index += 1; | |
| 15099 } | |
| 15100 | |
| 15101 // A regular expression that was never closed is an | |
| 15102 // error from which we cannot recover. | |
| 15103 | |
| 15104 if (!terminated) { | |
| 15105 this.trigger("error", { | |
| 15106 code: "E015", | |
| 15107 line: this.line, | |
| 15108 character: this.from | |
| 15109 }); | |
| 15110 | |
| 15111 return void this.trigger("fatal", { | |
| 15112 line: this.line, | |
| 15113 from: this.from | |
| 15114 }); | |
| 15115 } | |
| 15116 | |
| 15117 // Parse flags (if any). | |
| 15118 | |
| 15119 while (index < length) { | |
| 15120 char = this.peek(index); | |
| 15121 if (!/[gimy]/.test(char)) { | |
| 15122 break; | |
| 15123 } | |
| 15124 if (char === "y") { | |
| 15125 if (!state.inES6(true)) { | |
| 15126 this.triggerAsync( | |
| 15127 "warning", | |
| 15128 { | |
| 15129 code: "W119", | |
| 15130 line: this.line, | |
| 15131 character: this.char, | |
| 15132 data: [ "Sticky RegExp flag", "6" ] | |
| 15133 }, | |
| 15134 checks, | |
| 15135 function() { return true; } | |
| 15136 ); | |
| 15137 } | |
| 15138 if (value.indexOf("y") > -1) { | |
| 15139 malformedDesc = "Duplicate RegExp flag"; | |
| 15140 } | |
| 15141 } else { | |
| 15142 flags.push(char); | |
| 15143 } | |
| 15144 value += char; | |
| 15145 index += 1; | |
| 15146 } | |
| 15147 | |
| 15148 // Check regular expression for correctness. | |
| 15149 | |
| 15150 try { | |
| 15151 new RegExp(body, flags.join("")); | |
| 15152 } catch (err) { | |
| 15153 /** | |
| 15154 * Because JSHint relies on the current engine's RegExp parser to | |
| 15155 * validate RegExp literals, the description (exposed as the "data" | |
| 15156 * property on the error object) is platform dependent. | |
| 15157 */ | |
| 15158 malformedDesc = err.message; | |
| 15159 } | |
| 15160 | |
| 15161 if (malformedDesc) { | |
| 15162 malformed = true; | |
| 15163 this.trigger("error", { | |
| 15164 code: "E016", | |
| 15165 line: this.line, | |
| 15166 character: this.char, | |
| 15167 data: [ malformedDesc ] | |
| 15168 }); | |
| 15169 } | |
| 15170 | |
| 15171 return { | |
| 15172 type: Token.RegExp, | |
| 15173 value: value, | |
| 15174 flags: flags, | |
| 15175 isMalformed: malformed | |
| 15176 }; | |
| 15177 }, | |
| 15178 | |
| 15179 /* | |
| 15180 * Scan for any occurrence of non-breaking spaces. Non-breaking spaces | |
| 15181 * can be mistakenly typed on OS X with option-space. Non UTF-8 web | |
| 15182 * pages with non-breaking pages produce syntax errors. | |
| 15183 */ | |
| 15184 scanNonBreakingSpaces: function() { | |
| 15185 return state.option.nonbsp ? | |
| 15186 this.input.search(/(\u00A0)/) : -1; | |
| 15187 }, | |
| 15188 | |
| 15189 /* | |
| 15190 * Scan for characters that get silently deleted by one or more browsers. | |
| 15191 */ | |
| 15192 scanUnsafeChars: function() { | |
| 15193 return this.input.search(reg.unsafeChars); | |
| 15194 }, | |
| 15195 | |
| 15196 /* | |
| 15197 * Produce the next raw token or return 'null' if no tokens can be matched. | |
| 15198 * This method skips over all space characters. | |
| 15199 */ | |
| 15200 next: function(checks) { | |
| 15201 this.from = this.char; | |
| 15202 | |
| 15203 // Move to the next non-space character. | |
| 15204 while (/\s/.test(this.peek())) { | |
| 15205 this.from += 1; | |
| 15206 this.skip(); | |
| 15207 } | |
| 15208 | |
| 15209 // Methods that work with multi-line structures and move the | |
| 15210 // character pointer. | |
| 15211 | |
| 15212 var match = this.scanComments(checks) || | |
| 15213 this.scanStringLiteral(checks) || | |
| 15214 this.scanTemplateLiteral(checks); | |
| 15215 | |
| 15216 if (match) { | |
| 15217 return match; | |
| 15218 } | |
| 15219 | |
| 15220 // Methods that don't move the character pointer. | |
| 15221 | |
| 15222 match = | |
| 15223 this.scanRegExp(checks) || | |
| 15224 this.scanPunctuator() || | |
| 15225 this.scanKeyword() || | |
| 15226 this.scanIdentifier() || | |
| 15227 this.scanNumericLiteral(checks); | |
| 15228 | |
| 15229 if (match) { | |
| 15230 this.skip(match.tokenLength || match.value.length); | |
| 15231 return match; | |
| 15232 } | |
| 15233 | |
| 15234 // No token could be matched, give up. | |
| 15235 | |
| 15236 return null; | |
| 15237 }, | |
| 15238 | |
| 15239 /* | |
| 15240 * Switch to the next line and reset all char pointers. Once | |
| 15241 * switched, this method also checks for other minor warnings. | |
| 15242 */ | |
| 15243 nextLine: function(checks) { | |
| 15244 var char; | |
| 15245 | |
| 15246 if (this.line >= this.getLines().length) { | |
| 15247 return false; | |
| 15248 } | |
| 15249 | |
| 15250 this.input = this.getLines()[this.line]; | |
| 15251 this.line += 1; | |
| 15252 this.char = 1; | |
| 15253 this.from = 1; | |
| 15254 | |
| 15255 var inputTrimmed = this.input.trim(); | |
| 15256 | |
| 15257 var startsWith = function() { | |
| 15258 return _.some(arguments, function(prefix) { | |
| 15259 return inputTrimmed.indexOf(prefix) === 0; | |
| 15260 }); | |
| 15261 }; | |
| 15262 | |
| 15263 var endsWith = function() { | |
| 15264 return _.some(arguments, function(suffix) { | |
| 15265 return inputTrimmed.indexOf(suffix, inputTrimmed.length - suffix.length) !== -1; | |
| 15266 }); | |
| 15267 }; | |
| 15268 | |
| 15269 // If we are ignoring linter errors, replace the input with empty string | |
| 15270 // if it doesn't already at least start or end a multi-line comment | |
| 15271 if (this.ignoringLinterErrors === true) { | |
| 15272 if (!startsWith("/*", "//") && !(this.inComment && endsWith("*/"))) { | |
| 15273 this.input = ""; | |
| 15274 } | |
| 15275 } | |
| 15276 | |
| 15277 char = this.scanNonBreakingSpaces(); | |
| 15278 if (char >= 0) { | |
| 15279 this.triggerAsync( | |
| 15280 "warning", | |
| 15281 { code: "W125", line: this.line, character: char + 1 }, | |
| 15282 checks, | |
| 15283 function() { return true; } | |
| 15284 ); | |
| 15285 } | |
| 15286 | |
| 15287 this.input = this.input.replace(/\t/g, state.tab); | |
| 15288 char = this.scanUnsafeChars(); | |
| 15289 | |
| 15290 if (char >= 0) { | |
| 15291 this.triggerAsync( | |
| 15292 "warning", | |
| 15293 { code: "W100", line: this.line, character: char }, | |
| 15294 checks, | |
| 15295 function() { return true; } | |
| 15296 ); | |
| 15297 } | |
| 15298 | |
| 15299 // If there is a limit on line length, warn when lines get too | |
| 15300 // long. | |
| 15301 | |
| 15302 if (!this.ignoringLinterErrors && state.option.maxlen && | |
| 15303 state.option.maxlen < this.input.length) { | |
| 15304 var inComment = this.inComment || | |
| 15305 startsWith.call(inputTrimmed, "//") || | |
| 15306 startsWith.call(inputTrimmed, "/*"); | |
| 15307 | |
| 15308 var shouldTriggerError = !inComment || !reg.maxlenException.test(inputTrimmed); | |
| 15309 | |
| 15310 if (shouldTriggerError) { | |
| 15311 this.triggerAsync( | |
| 15312 "warning", | |
| 15313 { code: "W101", line: this.line, character: this.input.length }, | |
| 15314 checks, | |
| 15315 function() { return true; } | |
| 15316 ); | |
| 15317 } | |
| 15318 } | |
| 15319 | |
| 15320 return true; | |
| 15321 }, | |
| 15322 | |
| 15323 /* | |
| 15324 * Produce the next token. This function is called by advance() to get | |
| 15325 * the next token. It returns a token in a JSLint-compatible format. | |
| 15326 */ | |
| 15327 token: function() { | |
| 15328 /*jshint loopfunc:true */ | |
| 15329 var checks = asyncTrigger(); | |
| 15330 var token; | |
| 15331 | |
| 15332 | |
| 15333 function isReserved(token, isProperty) { | |
| 15334 if (!token.reserved) { | |
| 15335 return false; | |
| 15336 } | |
| 15337 var meta = token.meta; | |
| 15338 | |
| 15339 if (meta && meta.isFutureReservedWord && state.inES5()) { | |
| 15340 // ES3 FutureReservedWord in an ES5 environment. | |
| 15341 if (!meta.es5) { | |
| 15342 return false; | |
| 15343 } | |
| 15344 | |
| 15345 // Some ES5 FutureReservedWord identifiers are active only | |
| 15346 // within a strict mode environment. | |
| 15347 if (meta.strictOnly) { | |
| 15348 if (!state.option.strict && !state.isStrict()) { | |
| 15349 return false; | |
| 15350 } | |
| 15351 } | |
| 15352 | |
| 15353 if (isProperty) { | |
| 15354 return false; | |
| 15355 } | |
| 15356 } | |
| 15357 | |
| 15358 return true; | |
| 15359 } | |
| 15360 | |
| 15361 // Produce a token object. | |
| 15362 var create = function(type, value, isProperty, token) { | |
| 15363 /*jshint validthis:true */ | |
| 15364 var obj; | |
| 15365 | |
| 15366 if (type !== "(endline)" && type !== "(end)") { | |
| 15367 this.prereg = false; | |
| 15368 } | |
| 15369 | |
| 15370 if (type === "(punctuator)") { | |
| 15371 switch (value) { | |
| 15372 case ".": | |
| 15373 case ")": | |
| 15374 case "~": | |
| 15375 case "#": | |
| 15376 case "]": | |
| 15377 case "++": | |
| 15378 case "--": | |
| 15379 this.prereg = false; | |
| 15380 break; | |
| 15381 default: | |
| 15382 this.prereg = true; | |
| 15383 } | |
| 15384 | |
| 15385 obj = Object.create(state.syntax[value] || state.syntax["(error)"]); | |
| 15386 } | |
| 15387 | |
| 15388 if (type === "(identifier)") { | |
| 15389 if (value === "return" || value === "case" || value === "yield" || | |
| 15390 value === "typeof" || value === "instanceof") { | |
| 15391 this.prereg = true; | |
| 15392 } | |
| 15393 | |
| 15394 if (_.has(state.syntax, value)) { | |
| 15395 obj = Object.create(state.syntax[value] || state.syntax["(error)"]); | |
| 15396 | |
| 15397 // If this can't be a reserved keyword, reset the object. | |
| 15398 if (!isReserved(obj, isProperty && type === "(identifier)")) { | |
| 15399 obj = null; | |
| 15400 } | |
| 15401 } | |
| 15402 } | |
| 15403 | |
| 15404 if (type === "(template)" || type === "(template middle)") { | |
| 15405 this.prereg = true; | |
| 15406 } | |
| 15407 | |
| 15408 if (!obj) { | |
| 15409 obj = Object.create(state.syntax[type]); | |
| 15410 } | |
| 15411 | |
| 15412 obj.identifier = (type === "(identifier)"); | |
| 15413 obj.type = obj.type || type; | |
| 15414 obj.value = value; | |
| 15415 obj.line = this.line; | |
| 15416 obj.character = this.char; | |
| 15417 obj.from = this.from; | |
| 15418 if (obj.identifier && token) obj.raw_text = token.text || token.value; | |
| 15419 if (token && token.startLine && token.startLine !== this.line) { | |
| 15420 obj.startLine = token.startLine; | |
| 15421 } | |
| 15422 if (token && token.context) { | |
| 15423 // Context of current token | |
| 15424 obj.context = token.context; | |
| 15425 } | |
| 15426 if (token && token.depth) { | |
| 15427 // Nested template depth | |
| 15428 obj.depth = token.depth; | |
| 15429 } | |
| 15430 if (token && token.isUnclosed) { | |
| 15431 // Mark token as unclosed string / template literal | |
| 15432 obj.isUnclosed = token.isUnclosed; | |
| 15433 } | |
| 15434 | |
| 15435 if (isProperty && obj.identifier) { | |
| 15436 obj.isProperty = isProperty; | |
| 15437 } | |
| 15438 | |
| 15439 obj.check = checks.check; | |
| 15440 | |
| 15441 return obj; | |
| 15442 }.bind(this); | |
| 15443 | |
| 15444 for (;;) { | |
| 15445 if (!this.input.length) { | |
| 15446 if (this.nextLine(checks)) { | |
| 15447 return create("(endline)", ""); | |
| 15448 } | |
| 15449 | |
| 15450 if (this.exhausted) { | |
| 15451 return null; | |
| 15452 } | |
| 15453 | |
| 15454 this.exhausted = true; | |
| 15455 return create("(end)", ""); | |
| 15456 } | |
| 15457 | |
| 15458 token = this.next(checks); | |
| 15459 | |
| 15460 if (!token) { | |
| 15461 if (this.input.length) { | |
| 15462 // Unexpected character. | |
| 15463 this.trigger("error", { | |
| 15464 code: "E024", | |
| 15465 line: this.line, | |
| 15466 character: this.char, | |
| 15467 data: [ this.peek() ] | |
| 15468 }); | |
| 15469 | |
| 15470 this.input = ""; | |
| 15471 } | |
| 15472 | |
| 15473 continue; | |
| 15474 } | |
| 15475 | |
| 15476 switch (token.type) { | |
| 15477 case Token.StringLiteral: | |
| 15478 this.triggerAsync("String", { | |
| 15479 line: this.line, | |
| 15480 char: this.char, | |
| 15481 from: this.from, | |
| 15482 startLine: token.startLine, | |
| 15483 startChar: token.startChar, | |
| 15484 value: token.value, | |
| 15485 quote: token.quote | |
| 15486 }, checks, function() { return true; }); | |
| 15487 | |
| 15488 return create("(string)", token.value, null, token); | |
| 15489 | |
| 15490 case Token.TemplateHead: | |
| 15491 this.trigger("TemplateHead", { | |
| 15492 line: this.line, | |
| 15493 char: this.char, | |
| 15494 from: this.from, | |
| 15495 startLine: token.startLine, | |
| 15496 startChar: token.startChar, | |
| 15497 value: token.value | |
| 15498 }); | |
| 15499 return create("(template)", token.value, null, token); | |
| 15500 | |
| 15501 case Token.TemplateMiddle: | |
| 15502 this.trigger("TemplateMiddle", { | |
| 15503 line: this.line, | |
| 15504 char: this.char, | |
| 15505 from: this.from, | |
| 15506 startLine: token.startLine, | |
| 15507 startChar: token.startChar, | |
| 15508 value: token.value | |
| 15509 }); | |
| 15510 return create("(template middle)", token.value, null, token); | |
| 15511 | |
| 15512 case Token.TemplateTail: | |
| 15513 this.trigger("TemplateTail", { | |
| 15514 line: this.line, | |
| 15515 char: this.char, | |
| 15516 from: this.from, | |
| 15517 startLine: token.startLine, | |
| 15518 startChar: token.startChar, | |
| 15519 value: token.value | |
| 15520 }); | |
| 15521 return create("(template tail)", token.value, null, token); | |
| 15522 | |
| 15523 case Token.NoSubstTemplate: | |
| 15524 this.trigger("NoSubstTemplate", { | |
| 15525 line: this.line, | |
| 15526 char: this.char, | |
| 15527 from: this.from, | |
| 15528 startLine: token.startLine, | |
| 15529 startChar: token.startChar, | |
| 15530 value: token.value | |
| 15531 }); | |
| 15532 return create("(no subst template)", token.value, null, token); | |
| 15533 | |
| 15534 case Token.Identifier: | |
| 15535 this.triggerAsync("Identifier", { | |
| 15536 line: this.line, | |
| 15537 char: this.char, | |
| 15538 from: this.from, | |
| 15539 name: token.value, | |
| 15540 raw_name: token.text, | |
| 15541 isProperty: state.tokens.curr.id === "." | |
| 15542 }, checks, function() { return true; }); | |
| 15543 | |
| 15544 /* falls through */ | |
| 15545 case Token.Keyword: | |
| 15546 case Token.NullLiteral: | |
| 15547 case Token.BooleanLiteral: | |
| 15548 return create("(identifier)", token.value, state.tokens.curr.id === ".", token); | |
| 15549 | |
| 15550 case Token.NumericLiteral: | |
| 15551 if (token.isMalformed) { | |
| 15552 // This condition unequivocally describes a syntax error. | |
| 15553 // TODO: Re-factor as an "error" (not a "warning"). | |
| 15554 this.trigger("warning", { | |
| 15555 code: "W045", | |
| 15556 line: this.line, | |
| 15557 character: this.char, | |
| 15558 data: [ token.value ] | |
| 15559 }); | |
| 15560 } | |
| 15561 | |
| 15562 this.triggerAsync("warning", { | |
| 15563 code: "W114", | |
| 15564 line: this.line, | |
| 15565 character: this.char, | |
| 15566 data: [ "0x-" ] | |
| 15567 }, checks, function() { return token.base === 16 && state.jsonMode; }); | |
| 15568 | |
| 15569 this.triggerAsync("warning", { | |
| 15570 code: "W115", | |
| 15571 line: this.line, | |
| 15572 character: this.char | |
| 15573 }, checks, function() { | |
| 15574 return state.isStrict() && token.base === 8 && token.isLegacy; | |
| 15575 }); | |
| 15576 | |
| 15577 this.trigger("Number", { | |
| 15578 line: this.line, | |
| 15579 char: this.char, | |
| 15580 from: this.from, | |
| 15581 value: token.value, | |
| 15582 base: token.base, | |
| 15583 isMalformed: token.malformed | |
| 15584 }); | |
| 15585 | |
| 15586 return create("(number)", token.value); | |
| 15587 | |
| 15588 case Token.RegExp: | |
| 15589 return create("(regexp)", token.value); | |
| 15590 | |
| 15591 case Token.Comment: | |
| 15592 state.tokens.curr.comment = true; | |
| 15593 | |
| 15594 if (token.isSpecial) { | |
| 15595 return { | |
| 15596 id: '(comment)', | |
| 15597 value: token.value, | |
| 15598 body: token.body, | |
| 15599 type: token.commentType, | |
| 15600 isSpecial: token.isSpecial, | |
| 15601 line: this.line, | |
| 15602 character: this.char, | |
| 15603 from: this.from | |
| 15604 }; | |
| 15605 } | |
| 15606 | |
| 15607 break; | |
| 15608 | |
| 15609 case "": | |
| 15610 break; | |
| 15611 | |
| 15612 default: | |
| 15613 return create("(punctuator)", token.value); | |
| 15614 } | |
| 15615 } | |
| 15616 } | |
| 15617 }; | |
| 15618 | |
| 15619 exports.Lexer = Lexer; | |
| 15620 exports.Context = Context; | |
| 15621 | |
| 15622 },{"../data/ascii-identifier-data.js":1,"../data/non-ascii-identifier-part-only.js":2,"../data/non-ascii-identifier-start.js":3,"./reg.js":17,"./state.js":19,"events":5,"lodash":12}],14:[function(require,module,exports){ | |
| 15623 "use strict"; | |
| 15624 | |
| 15625 var _ = require("lodash"); | |
| 15626 | |
| 15627 var errors = { | |
| 15628 // JSHint options | |
| 15629 E001: "Bad option: '{a}'.", | |
| 15630 E002: "Bad option value.", | |
| 15631 | |
| 15632 // JSHint input | |
| 15633 E003: "Expected a JSON value.", | |
| 15634 E004: "Input is neither a string nor an array of strings.", | |
| 15635 E005: "Input is empty.", | |
| 15636 E006: "Unexpected early end of program.", | |
| 15637 | |
| 15638 // Strict mode | |
| 15639 E007: "Missing \"use strict\" statement.", | |
| 15640 E008: "Strict violation.", | |
| 15641 E009: "Option 'validthis' can't be used in a global scope.", | |
| 15642 E010: "'with' is not allowed in strict mode.", | |
| 15643 | |
| 15644 // Constants | |
| 15645 E011: "'{a}' has already been declared.", | |
| 15646 E012: "const '{a}' is initialized to 'undefined'.", | |
| 15647 E013: "Attempting to override '{a}' which is a constant.", | |
| 15648 | |
| 15649 // Regular expressions | |
| 15650 E014: "A regular expression literal can be confused with '/='.", | |
| 15651 E015: "Unclosed regular expression.", | |
| 15652 E016: "Invalid regular expression.", | |
| 15653 | |
| 15654 // Tokens | |
| 15655 E017: "Unclosed comment.", | |
| 15656 E018: "Unbegun comment.", | |
| 15657 E019: "Unmatched '{a}'.", | |
| 15658 E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.", | |
| 15659 E021: "Expected '{a}' and instead saw '{b}'.", | |
| 15660 E022: "Line breaking error '{a}'.", | |
| 15661 E023: "Missing '{a}'.", | |
| 15662 E024: "Unexpected '{a}'.", | |
| 15663 E025: "Missing ':' on a case clause.", | |
| 15664 E026: "Missing '}' to match '{' from line {a}.", | |
| 15665 E027: "Missing ']' to match '[' from line {a}.", | |
| 15666 E028: "Illegal comma.", | |
| 15667 E029: "Unclosed string.", | |
| 15668 | |
| 15669 // Everything else | |
| 15670 E030: "Expected an identifier and instead saw '{a}'.", | |
| 15671 E031: "Bad assignment.", // FIXME: Rephrase | |
| 15672 E032: "Expected a small integer or 'false' and instead saw '{a}'.", | |
| 15673 E033: "Expected an operator and instead saw '{a}'.", | |
| 15674 E034: "get/set are ES5 features.", | |
| 15675 E035: "Missing property name.", | |
| 15676 E036: "Expected to see a statement and instead saw a block.", | |
| 15677 E037: null, | |
| 15678 E038: null, | |
| 15679 E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.", | |
| 15680 E040: "Each value should have its own case label.", | |
| 15681 E041: "Unrecoverable syntax error.", | |
| 15682 E042: "Stopping.", | |
| 15683 E043: "Too many errors.", | |
| 15684 E044: null, | |
| 15685 E045: "Invalid for each loop.", | |
| 15686 E046: "Yield expressions may only occur within generator functions.", | |
| 15687 E047: null, | |
| 15688 E048: "{a} declaration not directly within block.", | |
| 15689 E049: "A {a} cannot be named '{b}'.", | |
| 15690 E050: "Mozilla requires the yield expression to be parenthesized here.", | |
| 15691 E051: null, | |
| 15692 E052: "Unclosed template literal.", | |
| 15693 E053: "{a} declarations are only allowed at the top level of module scope.", | |
| 15694 E054: "Class properties must be methods. Expected '(' but instead saw '{a}'.", | |
| 15695 E055: "The '{a}' option cannot be set after any executable code.", | |
| 15696 E056: "'{a}' was used before it was declared, which is illegal for '{b}' variables.", | |
| 15697 E057: "Invalid meta property: '{a}.{b}'.", | |
| 15698 E058: "Missing semicolon.", | |
| 15699 E059: "Incompatible values for the '{a}' and '{b}' linting options.", | |
| 15700 E060: "Non-callable values cannot be used as the second operand to instanceof.", | |
| 15701 E061: "Invalid position for 'yield' expression (consider wrapping in parenthesis)." | |
| 15702 }; | |
| 15703 | |
| 15704 var warnings = { | |
| 15705 W001: "'hasOwnProperty' is a really bad name.", | |
| 15706 W002: "Value of '{a}' may be overwritten in IE 8 and earlier.", | |
| 15707 W003: "'{a}' was used before it was defined.", | |
| 15708 W004: "'{a}' is already defined.", | |
| 15709 W005: "A dot following a number can be confused with a decimal point.", | |
| 15710 W006: "Confusing minuses.", | |
| 15711 W007: "Confusing plusses.", | |
| 15712 W008: "A leading decimal point can be confused with a dot: '{a}'.", | |
| 15713 W009: "The array literal notation [] is preferable.", | |
| 15714 W010: "The object literal notation {} is preferable.", | |
| 15715 W011: null, | |
| 15716 W012: null, | |
| 15717 W013: null, | |
| 15718 W014: "Misleading line break before '{a}'; readers may interpret this as an expression boundary.", | |
| 15719 W015: null, | |
| 15720 W016: "Unexpected use of '{a}'.", | |
| 15721 W017: "Bad operand.", | |
| 15722 W018: "Confusing use of '{a}'.", | |
| 15723 W019: "Use the isNaN function to compare with NaN.", | |
| 15724 W020: "Read only.", | |
| 15725 W021: "Reassignment of '{a}', which is is a {b}. " + | |
| 15726 "Use 'var' or 'let' to declare bindings that may change.", | |
| 15727 W022: "Do not assign to the exception parameter.", | |
| 15728 W023: "Expected an identifier in an assignment and instead saw a function invocation.", | |
| 15729 W024: "Expected an identifier and instead saw '{a}' (a reserved word).", | |
| 15730 W025: "Missing name in function declaration.", | |
| 15731 W026: "Inner functions should be listed at the top of the outer function.", | |
| 15732 W027: "Unreachable '{a}' after '{b}'.", | |
| 15733 W028: "Label '{a}' on {b} statement.", | |
| 15734 W030: "Expected an assignment or function call and instead saw an expression.", | |
| 15735 W031: "Do not use 'new' for side effects.", | |
| 15736 W032: "Unnecessary semicolon.", | |
| 15737 W033: "Missing semicolon.", | |
| 15738 W034: "Unnecessary directive \"{a}\".", | |
| 15739 W035: "Empty block.", | |
| 15740 W036: "Unexpected /*member '{a}'.", | |
| 15741 W037: "'{a}' is a statement label.", | |
| 15742 W038: "'{a}' used out of scope.", | |
| 15743 W039: "'{a}' is not allowed.", | |
| 15744 W040: "If a strict mode function is executed using function invocation, " + | |
| 15745 "its 'this' value will be undefined.", | |
| 15746 W041: null, | |
| 15747 W042: "Avoid EOL escaping.", | |
| 15748 W043: "Bad escaping of EOL. Use option multistr if needed.", | |
| 15749 W044: "Bad or unnecessary escaping.", /* TODO(caitp): remove W044 */ | |
| 15750 W045: "Bad number '{a}'.", | |
| 15751 W046: "Don't use extra leading zeros '{a}'.", | |
| 15752 W047: "A trailing decimal point can be confused with a dot: '{a}'.", | |
| 15753 W048: "Unexpected control character in regular expression.", | |
| 15754 W049: "Unexpected escaped character '{a}' in regular expression.", | |
| 15755 W050: "JavaScript URL.", | |
| 15756 W051: "Variables should not be deleted.", | |
| 15757 W052: "Unexpected '{a}'.", | |
| 15758 W053: "Do not use {a} as a constructor.", | |
| 15759 W054: "The Function constructor is a form of eval.", | |
| 15760 W055: "A constructor name should start with an uppercase letter.", | |
| 15761 W056: "Bad constructor.", | |
| 15762 W057: "Weird construction. Is 'new' necessary?", | |
| 15763 W058: "Missing '()' invoking a constructor.", | |
| 15764 W059: "Avoid arguments.{a}.", | |
| 15765 W060: "document.write can be a form of eval.", | |
| 15766 W061: "eval can be harmful.", | |
| 15767 W062: "Wrap an immediate function invocation in parens " + | |
| 15768 "to assist the reader in understanding that the expression " + | |
| 15769 "is the result of a function, and not the function itself.", | |
| 15770 W063: "Math is not a function.", | |
| 15771 W064: "Missing 'new' prefix when invoking a constructor.", | |
| 15772 W065: "Missing radix parameter.", | |
| 15773 W066: "Implied eval. Consider passing a function instead of a string.", | |
| 15774 W067: "Bad invocation.", | |
| 15775 W068: "Wrapping non-IIFE function literals in parens is unnecessary.", | |
| 15776 W069: "['{a}'] is better written in dot notation.", | |
| 15777 W070: "Extra comma. (it breaks older versions of IE)", | |
| 15778 W071: "This function has too many statements. ({a})", | |
| 15779 W072: "This function has too many parameters. ({a})", | |
| 15780 W073: "Blocks are nested too deeply. ({a})", | |
| 15781 W074: "This function's cyclomatic complexity is too high. ({a})", | |
| 15782 W075: "Duplicate {a} '{b}'.", | |
| 15783 W076: "Unexpected parameter '{a}' in get {b} function.", | |
| 15784 W077: "Expected a single parameter in set {a} function.", | |
| 15785 W078: "Setter is defined without getter.", | |
| 15786 W079: "Redefinition of '{a}'.", | |
| 15787 W080: "It's not necessary to initialize '{a}' to 'undefined'.", | |
| 15788 W081: null, | |
| 15789 W082: "Function declarations should not be placed in blocks. " + | |
| 15790 "Use a function expression or move the statement to the top of " + | |
| 15791 "the outer function.", | |
| 15792 W083: "Functions declared within loops referencing an outer scoped " + | |
| 15793 "variable may lead to confusing semantics.", | |
| 15794 W084: "Expected a conditional expression and instead saw an assignment.", | |
| 15795 W085: "Don't use 'with'.", | |
| 15796 W086: "Expected a 'break' statement before '{a}'.", | |
| 15797 W087: "Forgotten 'debugger' statement?", | |
| 15798 W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.", | |
| 15799 W089: "The body of a for in should be wrapped in an if statement to filter " + | |
| 15800 "unwanted properties from the prototype.", | |
| 15801 W090: "'{a}' is not a statement label.", | |
| 15802 W091: null, | |
| 15803 W093: "Did you mean to return a conditional instead of an assignment?", | |
| 15804 W094: "Unexpected comma.", | |
| 15805 W095: "Expected a string and instead saw {a}.", | |
| 15806 W096: "The '{a}' key may produce unexpected results.", | |
| 15807 W097: "Use the function form of \"use strict\".", | |
| 15808 W098: "'{a}' is defined but never used.", | |
| 15809 W099: null, | |
| 15810 W100: "This character may get silently deleted by one or more browsers.", | |
| 15811 W101: "Line is too long.", | |
| 15812 W102: null, | |
| 15813 W103: "The '{a}' property is deprecated.", | |
| 15814 W104: "'{a}' is available in ES{b} (use 'esversion: {b}') or Mozilla JS extensions (use moz).", | |
| 15815 W105: "Unexpected {a} in '{b}'.", | |
| 15816 W106: "Identifier '{a}' is not in camel case.", | |
| 15817 W107: "Script URL.", | |
| 15818 W108: "Strings must use doublequote.", | |
| 15819 W109: "Strings must use singlequote.", | |
| 15820 W110: "Mixed double and single quotes.", | |
| 15821 W112: "Unclosed string.", | |
| 15822 W113: "Control character in string: {a}.", | |
| 15823 W114: "Avoid {a}.", | |
| 15824 W115: "Octal literals are not allowed in strict mode.", | |
| 15825 W116: "Expected '{a}' and instead saw '{b}'.", | |
| 15826 W117: "'{a}' is not defined.", | |
| 15827 W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).", | |
| 15828 W119: "'{a}' is only available in ES{b} (use 'esversion: {b}').", | |
| 15829 W120: "You might be leaking a variable ({a}) here.", | |
| 15830 W121: "Extending prototype of native object: '{a}'.", | |
| 15831 W122: "Invalid typeof value '{a}'", | |
| 15832 W123: "'{a}' is already defined in outer scope.", | |
| 15833 W124: "A generator function should contain at least one yield expression.", | |
| 15834 W125: "This line contains non-breaking spaces: http://jshint.com/docs/options/#nonbsp", | |
| 15835 W126: "Unnecessary grouping operator.", | |
| 15836 W127: "Unexpected use of a comma operator.", | |
| 15837 W128: "Empty array elements require elision=true.", | |
| 15838 W129: "'{a}' is defined in a future version of JavaScript. Use a " + | |
| 15839 "different variable name to avoid migration issues.", | |
| 15840 W130: "Invalid element after rest element.", | |
| 15841 W131: "Invalid parameter after rest parameter.", | |
| 15842 W132: "`var` declarations are forbidden. Use `let` or `const` instead.", | |
| 15843 W133: "Invalid for-{a} loop left-hand-side: {b}.", | |
| 15844 W134: "The '{a}' option is only available when linting ECMAScript {b} code.", | |
| 15845 W135: "{a} may not be supported by non-browser environments.", | |
| 15846 W136: "'{a}' must be in function scope.", | |
| 15847 W137: "Empty destructuring.", | |
| 15848 W138: "Regular parameters should not come after default parameters.", | |
| 15849 W139: "Function expressions should not be used as the second operand to instanceof.", | |
| 15850 W140: "Missing comma." | |
| 15851 }; | |
| 15852 | |
| 15853 var info = { | |
| 15854 I001: "Comma warnings can be turned off with 'laxcomma'.", | |
| 15855 I002: null, | |
| 15856 I003: "ES5 option is now set per default" | |
| 15857 }; | |
| 15858 | |
| 15859 exports.errors = {}; | |
| 15860 exports.warnings = {}; | |
| 15861 exports.info = {}; | |
| 15862 | |
| 15863 _.each(errors, function(desc, code) { | |
| 15864 exports.errors[code] = { code: code, desc: desc }; | |
| 15865 }); | |
| 15866 | |
| 15867 _.each(warnings, function(desc, code) { | |
| 15868 exports.warnings[code] = { code: code, desc: desc }; | |
| 15869 }); | |
| 15870 | |
| 15871 _.each(info, function(desc, code) { | |
| 15872 exports.info[code] = { code: code, desc: desc }; | |
| 15873 }); | |
| 15874 | |
| 15875 },{"lodash":12}],15:[function(require,module,exports){ | |
| 15876 "use strict"; | |
| 15877 | |
| 15878 function NameStack() { | |
| 15879 this._stack = []; | |
| 15880 } | |
| 15881 | |
| 15882 Object.defineProperty(NameStack.prototype, "length", { | |
| 15883 get: function() { | |
| 15884 return this._stack.length; | |
| 15885 } | |
| 15886 }); | |
| 15887 | |
| 15888 /** | |
| 15889 * Create a new entry in the stack. Useful for tracking names across | |
| 15890 * expressions. | |
| 15891 */ | |
| 15892 NameStack.prototype.push = function() { | |
| 15893 this._stack.push(null); | |
| 15894 }; | |
| 15895 | |
| 15896 /** | |
| 15897 * Discard the most recently-created name on the stack. | |
| 15898 */ | |
| 15899 NameStack.prototype.pop = function() { | |
| 15900 this._stack.pop(); | |
| 15901 }; | |
| 15902 | |
| 15903 /** | |
| 15904 * Update the most recent name on the top of the stack. | |
| 15905 * | |
| 15906 * @param {object} token The token to consider as the source for the most | |
| 15907 * recent name. | |
| 15908 */ | |
| 15909 NameStack.prototype.set = function(token) { | |
| 15910 this._stack[this.length - 1] = token; | |
| 15911 }; | |
| 15912 | |
| 15913 /** | |
| 15914 * Generate a string representation of the most recent name. | |
| 15915 * | |
| 15916 * @returns {string} | |
| 15917 */ | |
| 15918 NameStack.prototype.infer = function() { | |
| 15919 var nameToken = this._stack[this.length - 1]; | |
| 15920 var prefix = ""; | |
| 15921 var type; | |
| 15922 | |
| 15923 // During expected operation, the topmost entry on the stack will only | |
| 15924 // reflect the current function's name when the function is declared without | |
| 15925 // the `function` keyword (i.e. for in-line accessor methods). In other | |
| 15926 // cases, the `function` expression itself will introduce an empty entry on | |
| 15927 // the top of the stack, and this should be ignored. | |
| 15928 if (!nameToken || nameToken.type === "class") { | |
| 15929 nameToken = this._stack[this.length - 2]; | |
| 15930 } | |
| 15931 | |
| 15932 if (!nameToken) { | |
| 15933 return "(empty)"; | |
| 15934 } | |
| 15935 | |
| 15936 type = nameToken.type; | |
| 15937 | |
| 15938 if (type !== "(string)" && type !== "(number)" && type !== "(identifier)" && type !== "default") { | |
| 15939 return "(expression)"; | |
| 15940 } | |
| 15941 | |
| 15942 if (nameToken.accessorType) { | |
| 15943 prefix = nameToken.accessorType + " "; | |
| 15944 } | |
| 15945 | |
| 15946 return prefix + nameToken.value; | |
| 15947 }; | |
| 15948 | |
| 15949 module.exports = NameStack; | |
| 15950 | |
| 15951 },{}],16:[function(require,module,exports){ | |
| 15952 "use strict"; | |
| 15953 | |
| 15954 // These are the JSHint boolean options. | |
| 15955 exports.bool = { | |
| 15956 enforcing: { | |
| 15957 | |
| 15958 /** | |
| 15959 * This option prohibits the use of bitwise operators such as `^` (XOR), | |
| 15960 * `|` (OR) and others. Bitwise operators are very rare in JavaScript | |
| 15961 * programs and quite often `&` is simply a mistyped `&&`. | |
| 15962 */ | |
| 15963 bitwise : true, | |
| 15964 | |
| 15965 /** | |
| 15966 * | |
| 15967 * This options prohibits overwriting prototypes of native objects such as | |
| 15968 * `Array`, `Date` and so on. | |
| 15969 * | |
| 15970 * // jshint freeze:true | |
| 15971 * Array.prototype.count = function (value) { return 4; }; | |
| 15972 * // -> Warning: Extending prototype of native object: 'Array'. | |
| 15973 */ | |
| 15974 freeze : true, | |
| 15975 | |
| 15976 /** | |
| 15977 * This option allows you to force all variable names to use either | |
| 15978 * camelCase style or UPPER_CASE with underscores. | |
| 15979 * | |
| 15980 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 15981 * If you would like to enforce rules relating to code style, | |
| 15982 * check out [the JSCS | |
| 15983 * project](https://github.com/jscs-dev/node-jscs). | |
| 15984 */ | |
| 15985 camelcase : true, | |
| 15986 | |
| 15987 /** | |
| 15988 * This option requires you to always put curly braces around blocks in | |
| 15989 * loops and conditionals. JavaScript allows you to omit curly braces when | |
| 15990 * the block consists of only one statement, for example: | |
| 15991 * | |
| 15992 * while (day) | |
| 15993 * shuffle(); | |
| 15994 * | |
| 15995 * However, in some circumstances, it can lead to bugs (you'd think that | |
| 15996 * `sleep()` is a part of the loop while in reality it is not): | |
| 15997 * | |
| 15998 * while (day) | |
| 15999 * shuffle(); | |
| 16000 * sleep(); | |
| 16001 */ | |
| 16002 curly : true, | |
| 16003 | |
| 16004 /** | |
| 16005 * This options prohibits the use of `==` and `!=` in favor of `===` and | |
| 16006 * `!==`. The former try to coerce values before comparing them which can | |
| 16007 * lead to some unexpected results. The latter don't do any coercion so | |
| 16008 * they are generally safer. If you would like to learn more about type | |
| 16009 * coercion in JavaScript, we recommend [Truth, Equality and | |
| 16010 * JavaScript](http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/) | |
| 16011 * by Angus Croll. | |
| 16012 */ | |
| 16013 eqeqeq : true, | |
| 16014 | |
| 16015 /** | |
| 16016 * This option enables warnings about the use of identifiers which are | |
| 16017 * defined in future versions of JavaScript. Although overwriting them has | |
| 16018 * no effect in contexts where they are not implemented, this practice can | |
| 16019 * cause issues when migrating codebases to newer versions of the language. | |
| 16020 */ | |
| 16021 futurehostile: true, | |
| 16022 | |
| 16023 /** | |
| 16024 * This option tells JSHint that your code needs to adhere to ECMAScript 3 | |
| 16025 * specification. Use this option if you need your program to be executable | |
| 16026 * in older browsers—such as Internet Explorer 6/7/8/9—and other legacy | |
| 16027 * JavaScript environments. | |
| 16028 * | |
| 16029 * @deprecated Use `esversion: 3` instead. | |
| 16030 */ | |
| 16031 es3 : true, | |
| 16032 | |
| 16033 /** | |
| 16034 * This option enables syntax first defined in [the ECMAScript 5.1 | |
| 16035 * specification](http://es5.github.io/). This includes allowing reserved | |
| 16036 * keywords as object properties. | |
| 16037 * | |
| 16038 * @deprecated Use `esversion: 5` instead. | |
| 16039 */ | |
| 16040 es5 : true, | |
| 16041 | |
| 16042 /** | |
| 16043 * This option requires all `for in` loops to filter object's items. The | |
| 16044 * for in statement allows for looping through the names of all of the | |
| 16045 * properties of an object including those inherited through the prototype | |
| 16046 * chain. This behavior can lead to unexpected items in your object so it | |
| 16047 * is generally safer to always filter inherited properties out as shown in | |
| 16048 * the example: | |
| 16049 * | |
| 16050 * for (key in obj) { | |
| 16051 * if (obj.hasOwnProperty(key)) { | |
| 16052 * // We are sure that obj[key] belongs to the object and was not inherited. | |
| 16053 * } | |
| 16054 * } | |
| 16055 * | |
| 16056 * For more in-depth understanding of `for in` loops in JavaScript, read | |
| 16057 * [Exploring JavaScript for-in | |
| 16058 * loops](http://javascriptweblog.wordpress.com/2011/01/04/exploring-javascript-for-in-loops/) | |
| 16059 * by Angus Croll. | |
| 16060 */ | |
| 16061 forin : true, | |
| 16062 | |
| 16063 /** | |
| 16064 * This option prohibits the use of immediate function invocations without | |
| 16065 * wrapping them in parentheses. Wrapping parentheses assists readers of | |
| 16066 * your code in understanding that the expression is the result of a | |
| 16067 * function, and not the function itself. | |
| 16068 * | |
| 16069 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 16070 * If you would like to enforce rules relating to code style, | |
| 16071 * check out [the JSCS | |
| 16072 * project](https://github.com/jscs-dev/node-jscs). | |
| 16073 */ | |
| 16074 immed : true, | |
| 16075 | |
| 16076 /** | |
| 16077 * This option requires you to capitalize names of constructor functions. | |
| 16078 * Capitalizing functions that are intended to be used with `new` operator | |
| 16079 * is just a convention that helps programmers to visually distinguish | |
| 16080 * constructor functions from other types of functions to help spot | |
| 16081 * mistakes when using `this`. | |
| 16082 * | |
| 16083 * Not doing so won't break your code in any browsers or environments but | |
| 16084 * it will be a bit harder to figure out—by reading the code—if the | |
| 16085 * function was supposed to be used with or without new. And this is | |
| 16086 * important because when the function that was intended to be used with | |
| 16087 * `new` is used without it, `this` will point to the global object instead | |
| 16088 * of a new object. | |
| 16089 * | |
| 16090 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 16091 * If you would like to enforce rules relating to code style, | |
| 16092 * check out [the JSCS | |
| 16093 * project](https://github.com/jscs-dev/node-jscs). | |
| 16094 */ | |
| 16095 newcap : true, | |
| 16096 | |
| 16097 /** | |
| 16098 * This option prohibits the use of `arguments.caller` and | |
| 16099 * `arguments.callee`. Both `.caller` and `.callee` make quite a few | |
| 16100 * optimizations impossible so they were deprecated in future versions of | |
| 16101 * JavaScript. In fact, ECMAScript 5 forbids the use of `arguments.callee` | |
| 16102 * in strict mode. | |
| 16103 */ | |
| 16104 noarg : true, | |
| 16105 | |
| 16106 /** | |
| 16107 * This option prohibits the use of the comma operator. When misused, the | |
| 16108 * comma operator can obscure the value of a statement and promote | |
| 16109 * incorrect code. | |
| 16110 */ | |
| 16111 nocomma : true, | |
| 16112 | |
| 16113 /** | |
| 16114 * This option warns when you have an empty block in your code. JSLint was | |
| 16115 * originally warning for all empty blocks and we simply made it optional. | |
| 16116 * There were no studies reporting that empty blocks in JavaScript break | |
| 16117 * your code in any way. | |
| 16118 * | |
| 16119 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 16120 * If you would like to enforce rules relating to code style, | |
| 16121 * check out [the JSCS | |
| 16122 * project](https://github.com/jscs-dev/node-jscs). | |
| 16123 */ | |
| 16124 noempty : true, | |
| 16125 | |
| 16126 /** | |
| 16127 * This option warns about "non-breaking whitespace" characters. These | |
| 16128 * characters can be entered with option-space on Mac computers and have a | |
| 16129 * potential of breaking non-UTF8 web pages. | |
| 16130 */ | |
| 16131 nonbsp : true, | |
| 16132 | |
| 16133 /** | |
| 16134 * This option prohibits the use of constructor functions for side-effects. | |
| 16135 * Some people like to call constructor functions without assigning its | |
| 16136 * result to any variable: | |
| 16137 * | |
| 16138 * new MyConstructor(); | |
| 16139 * | |
| 16140 * There is no advantage in this approach over simply calling | |
| 16141 * `MyConstructor` since the object that the operator `new` creates isn't | |
| 16142 * used anywhere so you should generally avoid constructors like this one. | |
| 16143 */ | |
| 16144 nonew : true, | |
| 16145 | |
| 16146 /** | |
| 16147 * This option prohibits the use of explicitly undeclared variables. This | |
| 16148 * option is very useful for spotting leaking and mistyped variables. | |
| 16149 * | |
| 16150 * // jshint undef:true | |
| 16151 * | |
| 16152 * function test() { | |
| 16153 * var myVar = 'Hello, World'; | |
| 16154 * console.log(myvar); // Oops, typoed here. JSHint with undef will complain | |
| 16155 * } | |
| 16156 * | |
| 16157 * If your variable is defined in another file, you can use the `global` | |
| 16158 * directive to tell JSHint about it. | |
| 16159 */ | |
| 16160 undef : true, | |
| 16161 | |
| 16162 /** | |
| 16163 * This option prohibits the use of the grouping operator when it is not | |
| 16164 * strictly required. Such usage commonly reflects a misunderstanding of | |
| 16165 * unary operators, for example: | |
| 16166 * | |
| 16167 * // jshint singleGroups: true | |
| 16168 * | |
| 16169 * delete(obj.attr); // Warning: Unnecessary grouping operator. | |
| 16170 */ | |
| 16171 singleGroups: false, | |
| 16172 | |
| 16173 /** | |
| 16174 * When set to true, the use of VariableStatements are forbidden. | |
| 16175 * For example: | |
| 16176 * | |
| 16177 * // jshint varstmt: true | |
| 16178 * | |
| 16179 * var a; // Warning: `var` declarations are forbidden. Use `let` or `const` instead. | |
| 16180 */ | |
| 16181 varstmt: false, | |
| 16182 | |
| 16183 /** | |
| 16184 * This option is a short hand for the most strict JSHint configuration as | |
| 16185 * available in JSHint version 2.6.3. It enables all enforcing options and | |
| 16186 * disables all relaxing options that were defined in that release. | |
| 16187 * | |
| 16188 * @deprecated The option cannot be maintained without automatically opting | |
| 16189 * users in to new features. This can lead to unexpected | |
| 16190 * warnings/errors in when upgrading between minor versions of | |
| 16191 * JSHint. | |
| 16192 */ | |
| 16193 enforceall : false, | |
| 16194 | |
| 16195 /** | |
| 16196 * This option warns when a comma is not placed after the last element in an | |
| 16197 * array or object literal. Due to bugs in old versions of IE, trailing | |
| 16198 * commas used to be discouraged, but since ES5 their semantics were | |
| 16199 * standardized. (See | |
| 16200 * [#11.1.4](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.4) and | |
| 16201 * [#11.1.5](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.5).) | |
| 16202 * Now, they help to prevent the same [visual | |
| 16203 * ambiguities](http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.2) | |
| 16204 * that the strict usage of semicolons helps prevent. | |
| 16205 * | |
| 16206 * For example, this code might have worked last Tuesday: | |
| 16207 * | |
| 16208 * [ | |
| 16209 * b + c | |
| 16210 * ].forEach(print); | |
| 16211 * | |
| 16212 * But if one adds an element to the array and forgets to compensate for the | |
| 16213 * missing comma, no syntax error is thrown, and a linter cannot determine | |
| 16214 * if this was a mistake or an intentional function invocation. | |
| 16215 * | |
| 16216 * [ | |
| 16217 * b + c | |
| 16218 * (d + e) | |
| 16219 * ].forEach(print); | |
| 16220 * | |
| 16221 * If one always appends a list item with a comma, this ambiguity cannot | |
| 16222 * occur: | |
| 16223 * | |
| 16224 * [ | |
| 16225 * b + c, | |
| 16226 * ].forEach(print); | |
| 16227 * | |
| 16228 * [ | |
| 16229 * b + c, | |
| 16230 * (d + e), | |
| 16231 * ].forEach(print); | |
| 16232 */ | |
| 16233 trailingcomma: false | |
| 16234 }, | |
| 16235 relaxing: { | |
| 16236 | |
| 16237 /** | |
| 16238 * This option suppresses warnings about missing semicolons. There is a lot | |
| 16239 * of FUD about semicolon spread by quite a few people in the community. | |
| 16240 * The common myths are that semicolons are required all the time (they are | |
| 16241 * not) and that they are unreliable. JavaScript has rules about semicolons | |
| 16242 * which are followed by *all* browsers so it is up to you to decide | |
| 16243 * whether you should or should not use semicolons in your code. | |
| 16244 * | |
| 16245 * For more information about semicolons in JavaScript read [An Open Letter | |
| 16246 * to JavaScript Leaders Regarding | |
| 16247 * Semicolons](http://blog.izs.me/post/2353458699/an-open-letter-to-javascript-leaders-regarding) | |
| 16248 * by Isaac Schlueter and [JavaScript Semicolon | |
| 16249 * Insertion](http://inimino.org/~inimino/blog/javascript_semicolons). | |
| 16250 */ | |
| 16251 asi : true, | |
| 16252 | |
| 16253 /** | |
| 16254 * This option suppresses warnings about multi-line strings. Multi-line | |
| 16255 * strings can be dangerous in JavaScript because all hell breaks loose if | |
| 16256 * you accidentally put a whitespace in between the escape character (`\`) | |
| 16257 * and a new line. | |
| 16258 * | |
| 16259 * Note that even though this option allows correct multi-line strings, it | |
| 16260 * still warns about multi-line strings without escape characters or with | |
| 16261 * anything in between the escape character and a whitespace. | |
| 16262 * | |
| 16263 * // jshint multistr:true | |
| 16264 * | |
| 16265 * var text = "Hello\ | |
| 16266 * World"; // All good. | |
| 16267 * | |
| 16268 * text = "Hello | |
| 16269 * World"; // Warning, no escape character. | |
| 16270 * | |
| 16271 * text = "Hello\ | |
| 16272 * World"; // Warning, there is a space after \ | |
| 16273 * | |
| 16274 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 16275 * If you would like to enforce rules relating to code style, | |
| 16276 * check out [the JSCS | |
| 16277 * project](https://github.com/jscs-dev/node-jscs). | |
| 16278 */ | |
| 16279 multistr : true, | |
| 16280 | |
| 16281 /** | |
| 16282 * This option suppresses warnings about the `debugger` statements in your | |
| 16283 * code. | |
| 16284 */ | |
| 16285 debug : true, | |
| 16286 | |
| 16287 /** | |
| 16288 * This option suppresses warnings about the use of assignments in cases | |
| 16289 * where comparisons are expected. More often than not, code like `if (a = | |
| 16290 * 10) {}` is a typo. However, it can be useful in cases like this one: | |
| 16291 * | |
| 16292 * for (var i = 0, person; person = people[i]; i++) {} | |
| 16293 * | |
| 16294 * You can silence this error on a per-use basis by surrounding the assignment | |
| 16295 * with parenthesis, such as: | |
| 16296 * | |
| 16297 * for (var i = 0, person; (person = people[i]); i++) {} | |
| 16298 */ | |
| 16299 boss : true, | |
| 16300 | |
| 16301 /** | |
| 16302 * This option suppresses warnings about the use of `eval`. The use of | |
| 16303 * `eval` is discouraged because it can make your code vulnerable to | |
| 16304 * various injection attacks and it makes it hard for JavaScript | |
| 16305 * interpreter to do certain optimizations. | |
| 16306 */ | |
| 16307 evil : true, | |
| 16308 | |
| 16309 /** | |
| 16310 * This option suppresses warnings about declaring variables inside of | |
| 16311 * control | |
| 16312 * structures while accessing them later from the outside. Even though | |
| 16313 * JavaScript has only two real scopes—global and function—such practice | |
| 16314 * leads to confusion among people new to the language and hard-to-debug | |
| 16315 * bugs. This is why, by default, JSHint warns about variables that are | |
| 16316 * used outside of their intended scope. | |
| 16317 * | |
| 16318 * function test() { | |
| 16319 * if (true) { | |
| 16320 * var x = 0; | |
| 16321 * } | |
| 16322 * | |
| 16323 * x += 1; // Default: 'x' used out of scope. | |
| 16324 * // No warning when funcscope:true | |
| 16325 * } | |
| 16326 */ | |
| 16327 funcscope : true, | |
| 16328 | |
| 16329 /** | |
| 16330 * This option suppresses warnings about the use of global strict mode. | |
| 16331 * Global strict mode can break third-party widgets so it is not | |
| 16332 * recommended. | |
| 16333 * | |
| 16334 * For more info about strict mode see the `strict` option. | |
| 16335 * | |
| 16336 * @deprecated Use `strict: "global"`. | |
| 16337 */ | |
| 16338 globalstrict: true, | |
| 16339 | |
| 16340 /** | |
| 16341 * This option suppresses warnings about the `__iterator__` property. This | |
| 16342 * property is not supported by all browsers so use it carefully. | |
| 16343 */ | |
| 16344 iterator : true, | |
| 16345 | |
| 16346 /** | |
| 16347 * This option suppresses warnings about invalid `typeof` operator values. | |
| 16348 * This operator has only [a limited set of possible return | |
| 16349 * values](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof). | |
| 16350 * By default, JSHint warns when you compare its result with an invalid | |
| 16351 * value which often can be a typo. | |
| 16352 * | |
| 16353 * // 'fuction' instead of 'function' | |
| 16354 * if (typeof a == "fuction") { // Invalid typeof value 'fuction' | |
| 16355 * // ... | |
| 16356 * } | |
| 16357 * | |
| 16358 * Do not use this option unless you're absolutely sure you don't want | |
| 16359 * these checks. | |
| 16360 */ | |
| 16361 notypeof : true, | |
| 16362 | |
| 16363 /** | |
| 16364 * This option prohibits the use of unary increment and decrement | |
| 16365 * operators. Some people think that `++` and `--` reduces the quality of | |
| 16366 * their coding styles and there are programming languages—such as | |
| 16367 * Python—that go completely without these operators. | |
| 16368 */ | |
| 16369 plusplus : true, | |
| 16370 | |
| 16371 /** | |
| 16372 * This option suppresses warnings about the `__proto__` property. | |
| 16373 */ | |
| 16374 proto : true, | |
| 16375 | |
| 16376 /** | |
| 16377 * This option suppresses warnings about the use of script-targeted | |
| 16378 * URLs—such as `javascript:...`. | |
| 16379 */ | |
| 16380 scripturl : true, | |
| 16381 | |
| 16382 /** | |
| 16383 * This option suppresses warnings about using `[]` notation when it can be | |
| 16384 * expressed in dot notation: `person['name']` vs. `person.name`. | |
| 16385 * | |
| 16386 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 16387 * If you would like to enforce rules relating to code style, | |
| 16388 * check out [the JSCS | |
| 16389 * project](https://github.com/jscs-dev/node-jscs). | |
| 16390 */ | |
| 16391 sub : true, | |
| 16392 | |
| 16393 /** | |
| 16394 * This option suppresses warnings about "weird" constructions like | |
| 16395 * `new function () { ... }` and `new Object;`. Such constructions are | |
| 16396 * sometimes used to produce singletons in JavaScript: | |
| 16397 * | |
| 16398 * var singleton = new function() { | |
| 16399 * var privateVar; | |
| 16400 * | |
| 16401 * this.publicMethod = function () {} | |
| 16402 * this.publicMethod2 = function () {} | |
| 16403 * }; | |
| 16404 */ | |
| 16405 supernew : true, | |
| 16406 | |
| 16407 /** | |
| 16408 * This option suppresses most of the warnings about possibly unsafe line | |
| 16409 * breakings in your code. It doesn't suppress warnings about comma-first | |
| 16410 * coding style. To suppress those you have to use `laxcomma` (see below). | |
| 16411 * | |
| 16412 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 16413 * If you would like to enforce rules relating to code style, | |
| 16414 * check out [the JSCS | |
| 16415 * project](https://github.com/jscs-dev/node-jscs). | |
| 16416 */ | |
| 16417 laxbreak : true, | |
| 16418 | |
| 16419 /** | |
| 16420 * This option suppresses warnings about comma-first coding style: | |
| 16421 * | |
| 16422 * var obj = { | |
| 16423 * name: 'Anton' | |
| 16424 * , handle: 'valueof' | |
| 16425 * , role: 'SW Engineer' | |
| 16426 * }; | |
| 16427 * | |
| 16428 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 16429 * If you would like to enforce rules relating to code style, | |
| 16430 * check out [the JSCS | |
| 16431 * project](https://github.com/jscs-dev/node-jscs). | |
| 16432 */ | |
| 16433 laxcomma : true, | |
| 16434 | |
| 16435 /** | |
| 16436 * This option suppresses warnings about possible strict violations when | |
| 16437 * the code is running in strict mode and you use `this` in a | |
| 16438 * non-constructor function. You should use this option—in a function scope | |
| 16439 * only—when you are positive that your use of `this` is valid in the | |
| 16440 * strict mode (for example, if you call your function using | |
| 16441 * `Function.call`). | |
| 16442 * | |
| 16443 * **Note:** This option can be used only inside of a function scope. | |
| 16444 * JSHint will fail with an error if you will try to set this option | |
| 16445 * globally. | |
| 16446 */ | |
| 16447 validthis : true, | |
| 16448 | |
| 16449 /** | |
| 16450 * This option suppresses warnings about the use of the `with` statement. | |
| 16451 * The semantics of the `with` statement can cause confusion among | |
| 16452 * developers and accidental definition of global variables. | |
| 16453 * | |
| 16454 * More info: | |
| 16455 * | |
| 16456 * * [with Statement Considered | |
| 16457 * Harmful](http://yuiblog.com/blog/2006/04/11/with-statement-considered-harmful/) | |
| 16458 */ | |
| 16459 withstmt : true, | |
| 16460 | |
| 16461 /** | |
| 16462 * This options tells JSHint that your code uses Mozilla JavaScript | |
| 16463 * extensions. Unless you develop specifically for the Firefox web browser | |
| 16464 * you don't need this option. | |
| 16465 * | |
| 16466 * More info: | |
| 16467 * | |
| 16468 * * [New in JavaScript | |
| 16469 * 1.7](https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.7) | |
| 16470 */ | |
| 16471 moz : true, | |
| 16472 | |
| 16473 /** | |
| 16474 * This option suppresses warnings about generator functions with no | |
| 16475 * `yield` statement in them. | |
| 16476 */ | |
| 16477 noyield : true, | |
| 16478 | |
| 16479 /** | |
| 16480 * This option suppresses warnings about `== null` comparisons. Such | |
| 16481 * comparisons are often useful when you want to check if a variable is | |
| 16482 * `null` or `undefined`. | |
| 16483 */ | |
| 16484 eqnull : true, | |
| 16485 | |
| 16486 /** | |
| 16487 * This option suppresses warnings about missing semicolons, but only when | |
| 16488 * the semicolon is omitted for the last statement in a one-line block: | |
| 16489 * | |
| 16490 * var name = (function() { return 'Anton' }()); | |
| 16491 * | |
| 16492 * This is a very niche use case that is useful only when you use automatic | |
| 16493 * JavaScript code generators. | |
| 16494 */ | |
| 16495 lastsemic : true, | |
| 16496 | |
| 16497 /** | |
| 16498 * This option suppresses warnings about functions inside of loops. | |
| 16499 * Defining functions inside of loops can lead to bugs such as this one: | |
| 16500 * | |
| 16501 * var nums = []; | |
| 16502 * | |
| 16503 * for (var i = 0; i < 10; i++) { | |
| 16504 * nums[i] = function (j) { | |
| 16505 * return i + j; | |
| 16506 * }; | |
| 16507 * } | |
| 16508 * | |
| 16509 * nums[0](2); // Prints 12 instead of 2 | |
| 16510 * | |
| 16511 * To fix the code above you need to copy the value of `i`: | |
| 16512 * | |
| 16513 * var nums = []; | |
| 16514 * | |
| 16515 * for (var i = 0; i < 10; i++) { | |
| 16516 * (function (i) { | |
| 16517 * nums[i] = function (j) { | |
| 16518 * return i + j; | |
| 16519 * }; | |
| 16520 * }(i)); | |
| 16521 * } | |
| 16522 */ | |
| 16523 loopfunc : true, | |
| 16524 | |
| 16525 /** | |
| 16526 * This option suppresses warnings about the use of expressions where | |
| 16527 * normally you would expect to see assignments or function calls. Most of | |
| 16528 * the time, such code is a typo. However, it is not forbidden by the spec | |
| 16529 * and that's why this warning is optional. | |
| 16530 */ | |
| 16531 expr : true, | |
| 16532 | |
| 16533 /** | |
| 16534 * This option tells JSHint that your code uses ECMAScript 6 specific | |
| 16535 * syntax. Note that not all browsers implement these features. | |
| 16536 * | |
| 16537 * More info: | |
| 16538 * | |
| 16539 * * [Specification for ECMAScript | |
| 16540 * 6](http://www.ecma-international.org/ecma-262/6.0/index.html) | |
| 16541 * | |
| 16542 * @deprecated Use `esversion: 6` instead. | |
| 16543 */ | |
| 16544 esnext : true, | |
| 16545 | |
| 16546 /** | |
| 16547 * This option tells JSHint that your code uses ES3 array elision elements, | |
| 16548 * or empty elements (for example, `[1, , , 4, , , 7]`). | |
| 16549 */ | |
| 16550 elision : true, | |
| 16551 }, | |
| 16552 | |
| 16553 // Third party globals | |
| 16554 environments: { | |
| 16555 | |
| 16556 /** | |
| 16557 * This option defines globals exposed by the | |
| 16558 * [MooTools](http://mootools.net/) JavaScript framework. | |
| 16559 */ | |
| 16560 mootools : true, | |
| 16561 | |
| 16562 /** | |
| 16563 * This option defines globals exposed by | |
| 16564 * [CouchDB](http://couchdb.apache.org/). CouchDB is a document-oriented | |
| 16565 * database that can be queried and indexed in a MapReduce fashion using | |
| 16566 * JavaScript. | |
| 16567 */ | |
| 16568 couch : true, | |
| 16569 | |
| 16570 /** | |
| 16571 * This option defines globals exposed by [the Jasmine unit testing | |
| 16572 * framework](https://jasmine.github.io/). | |
| 16573 */ | |
| 16574 jasmine : true, | |
| 16575 | |
| 16576 /** | |
| 16577 * This option defines globals exposed by the [jQuery](http://jquery.com/) | |
| 16578 * JavaScript library. | |
| 16579 */ | |
| 16580 jquery : true, | |
| 16581 | |
| 16582 /** | |
| 16583 * This option defines globals available when your code is running inside | |
| 16584 * of the Node runtime environment. [Node.js](http://nodejs.org/) is a | |
| 16585 * server-side JavaScript environment that uses an asynchronous | |
| 16586 * event-driven model. This option also skips some warnings that make sense | |
| 16587 * in the browser environments but don't make sense in Node such as | |
| 16588 * file-level `use strict` pragmas and `console.log` statements. | |
| 16589 */ | |
| 16590 node : true, | |
| 16591 | |
| 16592 /** | |
| 16593 * This option defines globals exposed by [the QUnit unit testing | |
| 16594 * framework](http://qunitjs.com/). | |
| 16595 */ | |
| 16596 qunit : true, | |
| 16597 | |
| 16598 /** | |
| 16599 * This option defines globals available when your code is running inside | |
| 16600 * of the Rhino runtime environment. [Rhino](http://www.mozilla.org/rhino/) | |
| 16601 * is an open-source implementation of JavaScript written entirely in Java. | |
| 16602 */ | |
| 16603 rhino : true, | |
| 16604 | |
| 16605 /** | |
| 16606 * This option defines globals exposed by [the ShellJS | |
| 16607 * library](http://documentup.com/arturadib/shelljs). | |
| 16608 */ | |
| 16609 shelljs : true, | |
| 16610 | |
| 16611 /** | |
| 16612 * This option defines globals exposed by the | |
| 16613 * [Prototype](http://www.prototypejs.org/) JavaScript framework. | |
| 16614 */ | |
| 16615 prototypejs : true, | |
| 16616 | |
| 16617 /** | |
| 16618 * This option defines globals exposed by the [YUI](http://yuilibrary.com/) | |
| 16619 * JavaScript framework. | |
| 16620 */ | |
| 16621 yui : true, | |
| 16622 | |
| 16623 /** | |
| 16624 * This option defines globals exposed by the "BDD" and "TDD" UIs of the | |
| 16625 * [Mocha unit testing framework](http://mochajs.org/). | |
| 16626 */ | |
| 16627 mocha : true, | |
| 16628 | |
| 16629 /** | |
| 16630 * This option informs JSHint that the input code describes an ECMAScript 6 | |
| 16631 * module. All module code is interpreted as strict mode code. | |
| 16632 */ | |
| 16633 module : true, | |
| 16634 | |
| 16635 /** | |
| 16636 * This option defines globals available when your code is running as a | |
| 16637 * script for the [Windows Script | |
| 16638 * Host](http://en.wikipedia.org/wiki/Windows_Script_Host). | |
| 16639 */ | |
| 16640 wsh : true, | |
| 16641 | |
| 16642 /** | |
| 16643 * This option defines globals available when your code is running inside | |
| 16644 * of a Web Worker. [Web | |
| 16645 * Workers](https://developer.mozilla.org/en/Using_web_workers) provide a | |
| 16646 * simple means for web content to run scripts in background threads. | |
| 16647 */ | |
| 16648 worker : true, | |
| 16649 | |
| 16650 /** | |
| 16651 * This option defines non-standard but widely adopted globals such as | |
| 16652 * `escape` and `unescape`. | |
| 16653 */ | |
| 16654 nonstandard : true, | |
| 16655 | |
| 16656 /** | |
| 16657 * This option defines globals exposed by modern browsers: all the way from | |
| 16658 * good old `document` and `navigator` to the HTML5 `FileReader` and other | |
| 16659 * new developments in the browser world. | |
| 16660 * | |
| 16661 * **Note:** This option doesn't expose variables like `alert` or | |
| 16662 * `console`. See option `devel` for more information. | |
| 16663 */ | |
| 16664 browser : true, | |
| 16665 | |
| 16666 /** | |
| 16667 * This option defines globals available when using [the Browserify | |
| 16668 * tool](http://browserify.org/) to build a project. | |
| 16669 */ | |
| 16670 browserify : true, | |
| 16671 | |
| 16672 /** | |
| 16673 * This option defines globals that are usually used for logging poor-man's | |
| 16674 * debugging: `console`, `alert`, etc. It is usually a good idea to not | |
| 16675 * ship them in production because, for example, `console.log` breaks in | |
| 16676 * legacy versions of Internet Explorer. | |
| 16677 */ | |
| 16678 devel : true, | |
| 16679 | |
| 16680 /** | |
| 16681 * This option defines globals exposed by the [Dojo | |
| 16682 * Toolkit](http://dojotoolkit.org/). | |
| 16683 */ | |
| 16684 dojo : true, | |
| 16685 | |
| 16686 /** | |
| 16687 * This option defines globals for typed array constructors. | |
| 16688 * | |
| 16689 * More info: | |
| 16690 * | |
| 16691 * * [JavaScript typed | |
| 16692 * arrays](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays) | |
| 16693 */ | |
| 16694 typed : true, | |
| 16695 | |
| 16696 /** | |
| 16697 * This option defines globals available when your core is running inside | |
| 16698 * of the PhantomJS runtime environment. [PhantomJS](http://phantomjs.org/) | |
| 16699 * is a headless WebKit scriptable with a JavaScript API. It has fast and | |
| 16700 * native support for various web standards: DOM handling, CSS selector, | |
| 16701 * JSON, Canvas, and SVG. | |
| 16702 */ | |
| 16703 phantom : true | |
| 16704 }, | |
| 16705 | |
| 16706 // Obsolete options | |
| 16707 obsolete: { | |
| 16708 onecase : true, // if one case switch statements should be allowed | |
| 16709 regexp : true, // if the . should not be allowed in regexp literals | |
| 16710 regexdash : true // if unescaped first/last dash (-) inside brackets | |
| 16711 // should be tolerated | |
| 16712 } | |
| 16713 }; | |
| 16714 | |
| 16715 // These are the JSHint options that can take any value | |
| 16716 // (we use this object to detect invalid options) | |
| 16717 exports.val = { | |
| 16718 | |
| 16719 /** | |
| 16720 * This option lets you set the maximum length of a line. | |
| 16721 * | |
| 16722 * @deprecated JSHint is limiting its scope to issues of code correctness. If | |
| 16723 * you would like to enforce rules relating to code style, check | |
| 16724 * out [the JSCS project](https://github.com/jscs-dev/node-jscs). | |
| 16725 */ | |
| 16726 maxlen : false, | |
| 16727 | |
| 16728 /** | |
| 16729 * This option sets a specific tab width for your code. | |
| 16730 * | |
| 16731 * @deprecated JSHint is limiting its scope to issues of code correctness. If | |
| 16732 * you would like to enforce rules relating to code style, check | |
| 16733 * out [the JSCS project](https://github.com/jscs-dev/node-jscs). | |
| 16734 */ | |
| 16735 indent : false, | |
| 16736 | |
| 16737 /** | |
| 16738 * This options allows you to set the maximum amount of warnings JSHint will | |
| 16739 * produce before giving up. Default is 50. | |
| 16740 */ | |
| 16741 maxerr : false, | |
| 16742 | |
| 16743 /** | |
| 16744 * This option allows you to control which variables JSHint considers to be | |
| 16745 * implicitly defined in the environment. Configure it with an array of | |
| 16746 * string values. Prefixing a variable name with a hyphen (-) character will | |
| 16747 * remove that name from the collection of predefined variables. | |
| 16748 * | |
| 16749 * JSHint will consider variables declared in this way to be read-only. | |
| 16750 * | |
| 16751 * This option cannot be specified in-line; it may only be used via the | |
| 16752 * JavaScript API or from an external configuration file. | |
| 16753 */ | |
| 16754 predef : false, | |
| 16755 | |
| 16756 /** | |
| 16757 * This option can be used to specify a white list of global variables that | |
| 16758 * are not formally defined in the source code. This is most useful when | |
| 16759 * combined with the `undef` option in order to suppress warnings for | |
| 16760 * project-specific global variables. | |
| 16761 * | |
| 16762 * Setting an entry to `true` enables reading and writing to that variable. | |
| 16763 * Setting it to `false` will trigger JSHint to consider that variable | |
| 16764 * read-only. | |
| 16765 * | |
| 16766 * See also the "environment" options: a set of options to be used as short | |
| 16767 * hand for enabling global variables defined in common JavaScript | |
| 16768 * environments. | |
| 16769 * | |
| 16770 * To configure `globals` within an individual file, see [Inline | |
| 16771 * Configuration](http://jshint.com/docs/#inline-configuration). | |
| 16772 */ | |
| 16773 globals : false, | |
| 16774 | |
| 16775 /** | |
| 16776 * This option enforces the consistency of quotation marks used throughout | |
| 16777 * your code. It accepts three values: `true` if you don't want to enforce | |
| 16778 * one particular style but want some consistency, `"single"` if you want to | |
| 16779 * allow only single quotes and `"double"` if you want to allow only double | |
| 16780 * quotes. | |
| 16781 * | |
| 16782 * @deprecated JSHint is limiting its scope to issues of code correctness. If | |
| 16783 * you would like to enforce rules relating to code style, check | |
| 16784 * out [the JSCS project](https://github.com/jscs-dev/node-jscs). | |
| 16785 */ | |
| 16786 quotmark : false, | |
| 16787 | |
| 16788 scope : false, | |
| 16789 | |
| 16790 /** | |
| 16791 * This option lets you set the max number of statements allowed per function: | |
| 16792 * | |
| 16793 * // jshint maxstatements:4 | |
| 16794 * | |
| 16795 * function main() { | |
| 16796 * var i = 0; | |
| 16797 * var j = 0; | |
| 16798 * | |
| 16799 * // Function declarations count as one statement. Their bodies | |
| 16800 * // don't get taken into account for the outer function. | |
| 16801 * function inner() { | |
| 16802 * var i2 = 1; | |
| 16803 * var j2 = 1; | |
| 16804 * | |
| 16805 * return i2 + j2; | |
| 16806 * } | |
| 16807 * | |
| 16808 * j = i + j; | |
| 16809 * return j; // JSHint: Too many statements per function. (5) | |
| 16810 * } | |
| 16811 */ | |
| 16812 maxstatements: false, | |
| 16813 | |
| 16814 /** | |
| 16815 * This option lets you control how nested do you want your blocks to be: | |
| 16816 * | |
| 16817 * // jshint maxdepth:2 | |
| 16818 * | |
| 16819 * function main(meaning) { | |
| 16820 * var day = true; | |
| 16821 * | |
| 16822 * if (meaning === 42) { | |
| 16823 * while (day) { | |
| 16824 * shuffle(); | |
| 16825 * | |
| 16826 * if (tired) { // JSHint: Blocks are nested too deeply (3). | |
| 16827 * sleep(); | |
| 16828 * } | |
| 16829 * } | |
| 16830 * } | |
| 16831 * } | |
| 16832 */ | |
| 16833 maxdepth : false, | |
| 16834 | |
| 16835 /** | |
| 16836 * This option lets you set the max number of formal parameters allowed per | |
| 16837 * function: | |
| 16838 * | |
| 16839 * // jshint maxparams:3 | |
| 16840 * | |
| 16841 * function login(request, onSuccess) { | |
| 16842 * // ... | |
| 16843 * } | |
| 16844 * | |
| 16845 * // JSHint: Too many parameters per function (4). | |
| 16846 * function logout(request, isManual, whereAmI, onSuccess) { | |
| 16847 * // ... | |
| 16848 * } | |
| 16849 */ | |
| 16850 maxparams : false, | |
| 16851 | |
| 16852 /** | |
| 16853 * This option lets you control cyclomatic complexity throughout your code. | |
| 16854 * Cyclomatic complexity measures the number of linearly independent paths | |
| 16855 * through a program's source code. Read more about [cyclomatic complexity on | |
| 16856 * Wikipedia](http://en.wikipedia.org/wiki/Cyclomatic_complexity). | |
| 16857 */ | |
| 16858 maxcomplexity: false, | |
| 16859 | |
| 16860 /** | |
| 16861 * This option suppresses warnings about variable shadowing i.e. declaring a | |
| 16862 * variable that had been already declared somewhere in the outer scope. | |
| 16863 * | |
| 16864 * - "inner" - check for variables defined in the same scope only | |
| 16865 * - "outer" - check for variables defined in outer scopes as well | |
| 16866 * - false - same as inner | |
| 16867 * - true - allow variable shadowing | |
| 16868 */ | |
| 16869 shadow : false, | |
| 16870 | |
| 16871 /** | |
| 16872 * This option requires the code to run in ECMAScript 5's strict mode. | |
| 16873 * [Strict mode](https://developer.mozilla.org/en/JavaScript/Strict_mode) | |
| 16874 * is a way to opt in to a restricted variant of JavaScript. Strict mode | |
| 16875 * eliminates some JavaScript pitfalls that didn't cause errors by changing | |
| 16876 * them to produce errors. It also fixes mistakes that made it difficult | |
| 16877 * for the JavaScript engines to perform certain optimizations. | |
| 16878 * | |
| 16879 * - "global" - there must be a `"use strict";` directive at global level | |
| 16880 * - "implied" - lint the code as if there is the `"use strict";` directive | |
| 16881 * - false - disable warnings about strict mode | |
| 16882 * - true - there must be a `"use strict";` directive at function level; | |
| 16883 * this is preferable for scripts intended to be loaded in web | |
| 16884 * browsers directly because enabling strict mode globally | |
| 16885 * could adversely effect other scripts running on the same | |
| 16886 * page | |
| 16887 */ | |
| 16888 strict : true, | |
| 16889 | |
| 16890 /** | |
| 16891 * This option warns when you define and never use your variables. It is very | |
| 16892 * useful for general code cleanup, especially when used in addition to | |
| 16893 * `undef`. | |
| 16894 * | |
| 16895 * // jshint unused:true | |
| 16896 * | |
| 16897 * function test(a, b) { | |
| 16898 * var c, d = 2; | |
| 16899 * | |
| 16900 * return a + d; | |
| 16901 * } | |
| 16902 * | |
| 16903 * test(1, 2); | |
| 16904 * | |
| 16905 * // Line 3: 'b' was defined but never used. | |
| 16906 * // Line 4: 'c' was defined but never used. | |
| 16907 * | |
| 16908 * In addition to that, this option will warn you about unused global | |
| 16909 * variables declared via the `global` directive. | |
| 16910 * | |
| 16911 * When set to `true`, unused parameters that are followed by a used | |
| 16912 * parameter will not produce warnings. This option can be set to `vars` to | |
| 16913 * only check for variables, not function parameters, or `strict` to check | |
| 16914 * all variables and parameters. | |
| 16915 */ | |
| 16916 unused : true, | |
| 16917 | |
| 16918 /** | |
| 16919 * This option prohibits the use of a variable before it was defined. | |
| 16920 * JavaScript has function scope only and, in addition to that, all variables | |
| 16921 * are always moved—or hoisted— to the top of the function. This behavior can | |
| 16922 * lead to some very nasty bugs and that's why it is safer to always use | |
| 16923 * variable only after they have been explicitly defined. | |
| 16924 * | |
| 16925 * Setting this option to "nofunc" will allow function declarations to be | |
| 16926 * ignored. | |
| 16927 * | |
| 16928 * For more in-depth understanding of scoping and hoisting in JavaScript, | |
| 16929 * read [JavaScript Scoping and | |
| 16930 * Hoisting](http://www.adequatelygood.com/2010/2/JavaScript-Scoping-and-Hoisting) | |
| 16931 * by Ben Cherry. | |
| 16932 */ | |
| 16933 latedef : false, | |
| 16934 | |
| 16935 ignore : false, // start/end ignoring lines of code, bypassing the lexer | |
| 16936 // start - start ignoring lines, including the current line | |
| 16937 // end - stop ignoring lines, starting on the next line | |
| 16938 // line - ignore warnings / errors for just a single line | |
| 16939 // (this option does not bypass the lexer) | |
| 16940 | |
| 16941 ignoreDelimiters: false, // array of start/end delimiters used to ignore | |
| 16942 // certain chunks from code | |
| 16943 | |
| 16944 /** | |
| 16945 * This option is used to specify the ECMAScript version to which the code | |
| 16946 * must adhere. It can assume one of the following values: | |
| 16947 * - `3` - If you need your program to be executable | |
| 16948 * in older browsers—such as Internet Explorer 6/7/8/9—and other legacy | |
| 16949 * JavaScript environments | |
| 16950 * - `5` - To enable syntax first defined in [the ECMAScript 5.1 | |
| 16951 * specification](http://www.ecma-international.org/ecma-262/5.1/index.html). | |
| 16952 * This includes allowing reserved keywords as object properties. | |
| 16953 * - `6` - To tell JSHint that your code uses [ECMAScript | |
| 16954 * 6](http://www.ecma-international.org/ecma-262/6.0/index.html) specific | |
| 16955 * syntax. Note that not all browsers implement them. | |
| 16956 */ | |
| 16957 esversion: 5 | |
| 16958 }; | |
| 16959 | |
| 16960 // These are JSHint boolean options which are shared with JSLint | |
| 16961 // where the definition in JSHint is opposite JSLint | |
| 16962 exports.inverted = { | |
| 16963 bitwise : true, | |
| 16964 forin : true, | |
| 16965 newcap : true, | |
| 16966 plusplus: true, | |
| 16967 regexp : true, | |
| 16968 undef : true, | |
| 16969 | |
| 16970 // Inverted and renamed, use JSHint name here | |
| 16971 eqeqeq : true, | |
| 16972 strict : true | |
| 16973 }; | |
| 16974 | |
| 16975 exports.validNames = Object.keys(exports.val) | |
| 16976 .concat(Object.keys(exports.bool.relaxing)) | |
| 16977 .concat(Object.keys(exports.bool.enforcing)) | |
| 16978 .concat(Object.keys(exports.bool.obsolete)) | |
| 16979 .concat(Object.keys(exports.bool.environments)); | |
| 16980 | |
| 16981 // These are JSHint boolean options which are shared with JSLint | |
| 16982 // where the name has been changed but the effect is unchanged | |
| 16983 exports.renamed = { | |
| 16984 eqeq : "eqeqeq", | |
| 16985 windows: "wsh", | |
| 16986 sloppy : "strict" | |
| 16987 }; | |
| 16988 | |
| 16989 exports.removed = { | |
| 16990 nomen: true, | |
| 16991 onevar: true, | |
| 16992 passfail: true, | |
| 16993 white: true, | |
| 16994 gcl: true, | |
| 16995 smarttabs: true, | |
| 16996 trailing: true | |
| 16997 }; | |
| 16998 | |
| 16999 // Add options here which should not be automatically enforced by | |
| 17000 // `enforceall`. | |
| 17001 exports.noenforceall = { | |
| 17002 varstmt: true, | |
| 17003 strict: true | |
| 17004 }; | |
| 17005 | |
| 17006 },{}],17:[function(require,module,exports){ | |
| 17007 /* | |
| 17008 * Regular expressions. Some of these are stupidly long. | |
| 17009 */ | |
| 17010 | |
| 17011 /*jshint maxlen:1000 */ | |
| 17012 | |
| 17013 "use strict"; | |
| 17014 | |
| 17015 // Unsafe comment or string (ax) | |
| 17016 exports.unsafeString = | |
| 17017 /@cc|<\/?|script|\]\s*\]|<\s*!|</i; | |
| 17018 | |
| 17019 // Unsafe characters that are silently deleted by one or more browsers (cx) | |
| 17020 exports.unsafeChars = | |
| 17021 /[\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/; | |
| 17022 | |
| 17023 // Characters in strings that need escaping (nx and nxg) | |
| 17024 exports.needEsc = | |
| 17025 /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/; | |
| 17026 | |
| 17027 exports.needEscGlobal = | |
| 17028 /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g; | |
| 17029 | |
| 17030 // Star slash (lx) | |
| 17031 exports.starSlash = /\*\//; | |
| 17032 | |
| 17033 // Identifier (ix) | |
| 17034 exports.identifier = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/; | |
| 17035 | |
| 17036 // JavaScript URL (jx) | |
| 17037 exports.javascriptURL = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i; | |
| 17038 | |
| 17039 // Catches /* falls through */ comments (ft) | |
| 17040 exports.fallsThrough = /^\s*falls?\sthrough\s*$/; | |
| 17041 | |
| 17042 // very conservative rule (eg: only one space between the start of the comment and the first character) | |
| 17043 // to relax the maxlen option | |
| 17044 exports.maxlenException = /^(?:(?:\/\/|\/\*|\*) ?)?[^ ]+$/; | |
| 17045 | |
| 17046 },{}],18:[function(require,module,exports){ | |
| 17047 "use strict"; | |
| 17048 | |
| 17049 var _ = require("lodash"); | |
| 17050 var events = require("events"); | |
| 17051 | |
| 17052 // Used to denote membership in lookup tables (a primitive value such as `true` | |
| 17053 // would be silently rejected for the property name "__proto__" in some | |
| 17054 // environments) | |
| 17055 var marker = {}; | |
| 17056 | |
| 17057 /** | |
| 17058 * Creates a scope manager that handles variables and labels, storing usages | |
| 17059 * and resolving when variables are used and undefined | |
| 17060 */ | |
| 17061 var scopeManager = function(state, predefined, exported, declared) { | |
| 17062 | |
| 17063 var _current; | |
| 17064 var _scopeStack = []; | |
| 17065 | |
| 17066 function _newScope(type) { | |
| 17067 _current = { | |
| 17068 "(labels)": Object.create(null), | |
| 17069 "(usages)": Object.create(null), | |
| 17070 "(breakLabels)": Object.create(null), | |
| 17071 "(parent)": _current, | |
| 17072 "(type)": type, | |
| 17073 "(params)": (type === "functionparams" || type === "catchparams") ? [] : null | |
| 17074 }; | |
| 17075 _scopeStack.push(_current); | |
| 17076 } | |
| 17077 | |
| 17078 _newScope("global"); | |
| 17079 _current["(predefined)"] = predefined; | |
| 17080 | |
| 17081 var _currentFunctBody = _current; // this is the block after the params = function | |
| 17082 | |
| 17083 var usedPredefinedAndGlobals = Object.create(null); | |
| 17084 var impliedGlobals = Object.create(null); | |
| 17085 var unuseds = []; | |
| 17086 var emitter = new events.EventEmitter(); | |
| 17087 | |
| 17088 function warning(code, token) { | |
| 17089 emitter.emit("warning", { | |
| 17090 code: code, | |
| 17091 token: token, | |
| 17092 data: _.slice(arguments, 2) | |
| 17093 }); | |
| 17094 } | |
| 17095 | |
| 17096 function error(code, token) { | |
| 17097 emitter.emit("warning", { | |
| 17098 code: code, | |
| 17099 token: token, | |
| 17100 data: _.slice(arguments, 2) | |
| 17101 }); | |
| 17102 } | |
| 17103 | |
| 17104 function _setupUsages(labelName) { | |
| 17105 if (!_current["(usages)"][labelName]) { | |
| 17106 _current["(usages)"][labelName] = { | |
| 17107 "(modified)": [], | |
| 17108 "(reassigned)": [], | |
| 17109 "(tokens)": [] | |
| 17110 }; | |
| 17111 } | |
| 17112 } | |
| 17113 | |
| 17114 var _getUnusedOption = function(unused_opt) { | |
| 17115 if (unused_opt === undefined) { | |
| 17116 unused_opt = state.option.unused; | |
| 17117 } | |
| 17118 | |
| 17119 if (unused_opt === true) { | |
| 17120 unused_opt = "last-param"; | |
| 17121 } | |
| 17122 | |
| 17123 return unused_opt; | |
| 17124 }; | |
| 17125 | |
| 17126 var _warnUnused = function(name, tkn, type, unused_opt) { | |
| 17127 var line = tkn.line; | |
| 17128 var chr = tkn.from; | |
| 17129 var raw_name = tkn.raw_text || name; | |
| 17130 | |
| 17131 unused_opt = _getUnusedOption(unused_opt); | |
| 17132 | |
| 17133 var warnable_types = { | |
| 17134 "vars": ["var"], | |
| 17135 "last-param": ["var", "param"], | |
| 17136 "strict": ["var", "param", "last-param"] | |
| 17137 }; | |
| 17138 | |
| 17139 if (unused_opt) { | |
| 17140 if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) { | |
| 17141 warning("W098", { line: line, from: chr }, raw_name); | |
| 17142 } | |
| 17143 } | |
| 17144 | |
| 17145 // inconsistent - see gh-1894 | |
| 17146 if (unused_opt || type === "var") { | |
| 17147 unuseds.push({ | |
| 17148 name: name, | |
| 17149 line: line, | |
| 17150 character: chr | |
| 17151 }); | |
| 17152 } | |
| 17153 }; | |
| 17154 | |
| 17155 /** | |
| 17156 * Checks the current scope for unused identifiers | |
| 17157 */ | |
| 17158 function _checkForUnused() { | |
| 17159 // function params are handled specially | |
| 17160 // assume that parameters are the only thing declared in the param scope | |
| 17161 if (_current["(type)"] === "functionparams") { | |
| 17162 _checkParams(); | |
| 17163 return; | |
| 17164 } | |
| 17165 var curentLabels = _current["(labels)"]; | |
| 17166 for (var labelName in curentLabels) { | |
| 17167 if (curentLabels[labelName]) { | |
| 17168 if (curentLabels[labelName]["(type)"] !== "exception" && | |
| 17169 curentLabels[labelName]["(unused)"]) { | |
| 17170 _warnUnused(labelName, curentLabels[labelName]["(token)"], "var"); | |
| 17171 } | |
| 17172 } | |
| 17173 } | |
| 17174 } | |
| 17175 | |
| 17176 /** | |
| 17177 * Checks the current scope for unused parameters | |
| 17178 * Must be called in a function parameter scope | |
| 17179 */ | |
| 17180 function _checkParams() { | |
| 17181 var params = _current["(params)"]; | |
| 17182 | |
| 17183 if (!params) { | |
| 17184 return; | |
| 17185 } | |
| 17186 | |
| 17187 var param = params.pop(); | |
| 17188 var unused_opt; | |
| 17189 | |
| 17190 while (param) { | |
| 17191 var label = _current["(labels)"][param]; | |
| 17192 | |
| 17193 unused_opt = _getUnusedOption(state.funct["(unusedOption)"]); | |
| 17194 | |
| 17195 // 'undefined' is a special case for (function(window, undefined) { ... })(); | |
| 17196 // patterns. | |
| 17197 if (param === "undefined") | |
| 17198 return; | |
| 17199 | |
| 17200 if (label["(unused)"]) { | |
| 17201 _warnUnused(param, label["(token)"], "param", state.funct["(unusedOption)"]); | |
| 17202 } else if (unused_opt === "last-param") { | |
| 17203 return; | |
| 17204 } | |
| 17205 | |
| 17206 param = params.pop(); | |
| 17207 } | |
| 17208 } | |
| 17209 | |
| 17210 /** | |
| 17211 * Finds the relevant label's scope, searching from nearest outwards | |
| 17212 * @returns {Object} the scope the label was found in | |
| 17213 */ | |
| 17214 function _getLabel(labelName) { | |
| 17215 for (var i = _scopeStack.length - 1 ; i >= 0; --i) { | |
| 17216 var scopeLabels = _scopeStack[i]["(labels)"]; | |
| 17217 if (scopeLabels[labelName]) { | |
| 17218 return scopeLabels; | |
| 17219 } | |
| 17220 } | |
| 17221 } | |
| 17222 | |
| 17223 function usedSoFarInCurrentFunction(labelName) { | |
| 17224 // used so far in this whole function and any sub functions | |
| 17225 for (var i = _scopeStack.length - 1; i >= 0; i--) { | |
| 17226 var current = _scopeStack[i]; | |
| 17227 if (current["(usages)"][labelName]) { | |
| 17228 return current["(usages)"][labelName]; | |
| 17229 } | |
| 17230 if (current === _currentFunctBody) { | |
| 17231 break; | |
| 17232 } | |
| 17233 } | |
| 17234 return false; | |
| 17235 } | |
| 17236 | |
| 17237 function _checkOuterShadow(labelName, token) { | |
| 17238 | |
| 17239 // only check if shadow is outer | |
| 17240 if (state.option.shadow !== "outer") { | |
| 17241 return; | |
| 17242 } | |
| 17243 | |
| 17244 var isGlobal = _currentFunctBody["(type)"] === "global", | |
| 17245 isNewFunction = _current["(type)"] === "functionparams"; | |
| 17246 | |
| 17247 var outsideCurrentFunction = !isGlobal; | |
| 17248 for (var i = 0; i < _scopeStack.length; i++) { | |
| 17249 var stackItem = _scopeStack[i]; | |
| 17250 | |
| 17251 if (!isNewFunction && _scopeStack[i + 1] === _currentFunctBody) { | |
| 17252 outsideCurrentFunction = false; | |
| 17253 } | |
| 17254 if (outsideCurrentFunction && stackItem["(labels)"][labelName]) { | |
| 17255 warning("W123", token, labelName); | |
| 17256 } | |
| 17257 if (stackItem["(breakLabels)"][labelName]) { | |
| 17258 warning("W123", token, labelName); | |
| 17259 } | |
| 17260 } | |
| 17261 } | |
| 17262 | |
| 17263 function _latedefWarning(type, labelName, token) { | |
| 17264 if (state.option.latedef) { | |
| 17265 // if either latedef is strict and this is a function | |
| 17266 // or this is not a function | |
| 17267 if ((state.option.latedef === true && type === "function") || | |
| 17268 type !== "function") { | |
| 17269 warning("W003", token, labelName); | |
| 17270 } | |
| 17271 } | |
| 17272 } | |
| 17273 | |
| 17274 var scopeManagerInst = { | |
| 17275 | |
| 17276 on: function(names, listener) { | |
| 17277 names.split(" ").forEach(function(name) { | |
| 17278 emitter.on(name, listener); | |
| 17279 }); | |
| 17280 }, | |
| 17281 | |
| 17282 isPredefined: function(labelName) { | |
| 17283 return !this.has(labelName) && _.has(_scopeStack[0]["(predefined)"], labelName); | |
| 17284 }, | |
| 17285 | |
| 17286 /** | |
| 17287 * Tell the manager we are entering a new block of code | |
| 17288 * @param {string} [type] - The type of the block. Valid values are | |
| 17289 * "functionparams", "catchparams" and | |
| 17290 * "functionouter" | |
| 17291 */ | |
| 17292 stack: function(type) { | |
| 17293 var previousScope = _current; | |
| 17294 _newScope(type); | |
| 17295 | |
| 17296 if (!type && previousScope["(type)"] === "functionparams") { | |
| 17297 | |
| 17298 _current["(isFuncBody)"] = true; | |
| 17299 _current["(context)"] = _currentFunctBody; | |
| 17300 _currentFunctBody = _current; | |
| 17301 } | |
| 17302 }, | |
| 17303 | |
| 17304 unstack: function() { | |
| 17305 // jshint proto: true | |
| 17306 var subScope = _scopeStack.length > 1 ? _scopeStack[_scopeStack.length - 2] : null; | |
| 17307 var isUnstackingFunctionBody = _current === _currentFunctBody, | |
| 17308 isUnstackingFunctionParams = _current["(type)"] === "functionparams", | |
| 17309 isUnstackingFunctionOuter = _current["(type)"] === "functionouter"; | |
| 17310 | |
| 17311 var i, j; | |
| 17312 var currentUsages = _current["(usages)"]; | |
| 17313 var currentLabels = _current["(labels)"]; | |
| 17314 var usedLabelNameList = Object.keys(currentUsages); | |
| 17315 | |
| 17316 if (currentUsages.__proto__ && usedLabelNameList.indexOf("__proto__") === -1) { | |
| 17317 usedLabelNameList.push("__proto__"); | |
| 17318 } | |
| 17319 | |
| 17320 for (i = 0; i < usedLabelNameList.length; i++) { | |
| 17321 var usedLabelName = usedLabelNameList[i]; | |
| 17322 | |
| 17323 var usage = currentUsages[usedLabelName]; | |
| 17324 var usedLabel = currentLabels[usedLabelName]; | |
| 17325 if (usedLabel) { | |
| 17326 var usedLabelType = usedLabel["(type)"]; | |
| 17327 var isImmutable = usedLabelType === "const" || usedLabelType === "import"; | |
| 17328 | |
| 17329 if (usedLabel["(useOutsideOfScope)"] && !state.option.funcscope) { | |
| 17330 var usedTokens = usage["(tokens)"]; | |
| 17331 if (usedTokens) { | |
| 17332 for (j = 0; j < usedTokens.length; j++) { | |
| 17333 // Keep the consistency of https://github.com/jshint/jshint/issues/2409 | |
| 17334 if (usedLabel["(function)"] === usedTokens[j]["(function)"]) { | |
| 17335 error("W038", usedTokens[j], usedLabelName); | |
| 17336 } | |
| 17337 } | |
| 17338 } | |
| 17339 } | |
| 17340 | |
| 17341 // mark the label used | |
| 17342 _current["(labels)"][usedLabelName]["(unused)"] = false; | |
| 17343 | |
| 17344 // check for modifying a const | |
| 17345 if (isImmutable && usage["(modified)"]) { | |
| 17346 for (j = 0; j < usage["(modified)"].length; j++) { | |
| 17347 error("E013", usage["(modified)"][j], usedLabelName); | |
| 17348 } | |
| 17349 } | |
| 17350 | |
| 17351 // check for re-assigning a function declaration | |
| 17352 if ((usedLabelType === "function" || usedLabelType === "class") && | |
| 17353 usage["(reassigned)"]) { | |
| 17354 for (j = 0; j < usage["(reassigned)"].length; j++) { | |
| 17355 if (!usage["(reassigned)"][j].ignoreW021) { | |
| 17356 warning("W021", usage["(reassigned)"][j], usedLabelName, usedLabelType); | |
| 17357 } | |
| 17358 } | |
| 17359 } | |
| 17360 continue; | |
| 17361 } | |
| 17362 | |
| 17363 if (isUnstackingFunctionOuter) { | |
| 17364 state.funct["(isCapturing)"] = true; | |
| 17365 } | |
| 17366 | |
| 17367 if (subScope) { | |
| 17368 // not exiting the global scope, so copy the usage down in case its an out of scope usage | |
| 17369 if (!subScope["(usages)"][usedLabelName]) { | |
| 17370 subScope["(usages)"][usedLabelName] = usage; | |
| 17371 if (isUnstackingFunctionBody) { | |
| 17372 subScope["(usages)"][usedLabelName]["(onlyUsedSubFunction)"] = true; | |
| 17373 } | |
| 17374 } else { | |
| 17375 var subScopeUsage = subScope["(usages)"][usedLabelName]; | |
| 17376 subScopeUsage["(modified)"] = subScopeUsage["(modified)"].concat(usage["(modified)"]); | |
| 17377 subScopeUsage["(tokens)"] = subScopeUsage["(tokens)"].concat(usage["(tokens)"]); | |
| 17378 subScopeUsage["(reassigned)"] = | |
| 17379 subScopeUsage["(reassigned)"].concat(usage["(reassigned)"]); | |
| 17380 } | |
| 17381 } else { | |
| 17382 // this is exiting global scope, so we finalise everything here - we are at the end of the file | |
| 17383 if (typeof _current["(predefined)"][usedLabelName] === "boolean") { | |
| 17384 | |
| 17385 // remove the declared token, so we know it is used | |
| 17386 delete declared[usedLabelName]; | |
| 17387 | |
| 17388 // note it as used so it can be reported | |
| 17389 usedPredefinedAndGlobals[usedLabelName] = marker; | |
| 17390 | |
| 17391 // check for re-assigning a read-only (set to false) predefined | |
| 17392 if (_current["(predefined)"][usedLabelName] === false && usage["(reassigned)"]) { | |
| 17393 for (j = 0; j < usage["(reassigned)"].length; j++) { | |
| 17394 if (!usage["(reassigned)"][j].ignoreW020) { | |
| 17395 warning("W020", usage["(reassigned)"][j]); | |
| 17396 } | |
| 17397 } | |
| 17398 } | |
| 17399 } | |
| 17400 else { | |
| 17401 // label usage is not predefined and we have not found a declaration | |
| 17402 // so report as undeclared | |
| 17403 if (usage["(tokens)"]) { | |
| 17404 for (j = 0; j < usage["(tokens)"].length; j++) { | |
| 17405 var undefinedToken = usage["(tokens)"][j]; | |
| 17406 // if its not a forgiven undefined (e.g. typof x) | |
| 17407 if (!undefinedToken.forgiveUndef) { | |
| 17408 // if undef is on and undef was on when the token was defined | |
| 17409 if (state.option.undef && !undefinedToken.ignoreUndef) { | |
| 17410 warning("W117", undefinedToken, usedLabelName); | |
| 17411 } | |
| 17412 if (impliedGlobals[usedLabelName]) { | |
| 17413 impliedGlobals[usedLabelName].line.push(undefinedToken.line); | |
| 17414 } else { | |
| 17415 impliedGlobals[usedLabelName] = { | |
| 17416 name: usedLabelName, | |
| 17417 line: [undefinedToken.line] | |
| 17418 }; | |
| 17419 } | |
| 17420 } | |
| 17421 } | |
| 17422 } | |
| 17423 } | |
| 17424 } | |
| 17425 } | |
| 17426 | |
| 17427 // if exiting the global scope, we can warn about declared globals that haven't been used yet | |
| 17428 if (!subScope) { | |
| 17429 Object.keys(declared) | |
| 17430 .forEach(function(labelNotUsed) { | |
| 17431 _warnUnused(labelNotUsed, declared[labelNotUsed], "var"); | |
| 17432 }); | |
| 17433 } | |
| 17434 | |
| 17435 // If this is not a function boundary, transfer function-scoped labels to | |
| 17436 // the parent block (a rough simulation of variable hoisting). Previously | |
| 17437 // existing labels in the parent block should take precedence so that things and stuff. | |
| 17438 if (subScope && !isUnstackingFunctionBody && | |
| 17439 !isUnstackingFunctionParams && !isUnstackingFunctionOuter) { | |
| 17440 var labelNames = Object.keys(currentLabels); | |
| 17441 for (i = 0; i < labelNames.length; i++) { | |
| 17442 | |
| 17443 var defLabelName = labelNames[i]; | |
| 17444 var defLabel = currentLabels[defLabelName]; | |
| 17445 | |
| 17446 if (!defLabel["(blockscoped)"] && defLabel["(type)"] !== "exception") { | |
| 17447 var shadowed = subScope["(labels)"][defLabelName]; | |
| 17448 | |
| 17449 // Do not overwrite a label if it exists in the parent scope | |
| 17450 // because it is shared by adjacent blocks. Copy the `unused` | |
| 17451 // property so that any references found within the current block | |
| 17452 // are counted toward that higher-level declaration. | |
| 17453 if (shadowed) { | |
| 17454 shadowed["(unused)"] &= defLabel["(unused)"]; | |
| 17455 | |
| 17456 // "Hoist" the variable to the parent block, decorating the label | |
| 17457 // so that future references, though technically valid, can be | |
| 17458 // reported as "out-of-scope" in the absence of the `funcscope` | |
| 17459 // option. | |
| 17460 } else { | |
| 17461 defLabel["(useOutsideOfScope)"] = | |
| 17462 // Do not warn about out-of-scope usages in the global scope | |
| 17463 _currentFunctBody["(type)"] !== "global" && | |
| 17464 // When a higher scope contains a binding for the label, the | |
| 17465 // label is a re-declaration and should not prompt "used | |
| 17466 // out-of-scope" warnings. | |
| 17467 !this.funct.has(defLabelName, { excludeCurrent: true }); | |
| 17468 | |
| 17469 subScope["(labels)"][defLabelName] = defLabel; | |
| 17470 } | |
| 17471 | |
| 17472 delete currentLabels[defLabelName]; | |
| 17473 } | |
| 17474 } | |
| 17475 } | |
| 17476 | |
| 17477 _checkForUnused(); | |
| 17478 | |
| 17479 _scopeStack.pop(); | |
| 17480 if (isUnstackingFunctionBody) { | |
| 17481 _currentFunctBody = _scopeStack[_.findLastIndex(_scopeStack, function(scope) { | |
| 17482 // if function or if global (which is at the bottom so it will only return true if we call back) | |
| 17483 return scope["(isFuncBody)"] || scope["(type)"] === "global"; | |
| 17484 })]; | |
| 17485 } | |
| 17486 | |
| 17487 _current = subScope; | |
| 17488 }, | |
| 17489 | |
| 17490 /** | |
| 17491 * Add a param to the current scope | |
| 17492 * @param {string} labelName | |
| 17493 * @param {Token} token | |
| 17494 * @param {string} [type="param"] param type | |
| 17495 */ | |
| 17496 addParam: function(labelName, token, type) { | |
| 17497 type = type || "param"; | |
| 17498 | |
| 17499 if (type === "exception") { | |
| 17500 // if defined in the current function | |
| 17501 var previouslyDefinedLabelType = this.funct.labeltype(labelName); | |
| 17502 if (previouslyDefinedLabelType && previouslyDefinedLabelType !== "exception") { | |
| 17503 // and has not been used yet in the current function scope | |
| 17504 if (!state.option.node) { | |
| 17505 warning("W002", state.tokens.next, labelName); | |
| 17506 } | |
| 17507 } | |
| 17508 } | |
| 17509 | |
| 17510 // The variable was declared in the current scope | |
| 17511 if (_.has(_current["(labels)"], labelName)) { | |
| 17512 _current["(labels)"][labelName].duplicated = true; | |
| 17513 | |
| 17514 // The variable was declared in an outer scope | |
| 17515 } else { | |
| 17516 // if this scope has the variable defined, it's a re-definition error | |
| 17517 _checkOuterShadow(labelName, token, type); | |
| 17518 | |
| 17519 _current["(labels)"][labelName] = { | |
| 17520 "(type)" : type, | |
| 17521 "(token)": token, | |
| 17522 "(unused)": true }; | |
| 17523 | |
| 17524 _current["(params)"].push(labelName); | |
| 17525 } | |
| 17526 | |
| 17527 if (_.has(_current["(usages)"], labelName)) { | |
| 17528 var usage = _current["(usages)"][labelName]; | |
| 17529 // if its in a sub function it is not necessarily an error, just latedef | |
| 17530 if (usage["(onlyUsedSubFunction)"]) { | |
| 17531 _latedefWarning(type, labelName, token); | |
| 17532 } else { | |
| 17533 // this is a clear illegal usage for block scoped variables | |
| 17534 warning("E056", token, labelName, type); | |
| 17535 } | |
| 17536 } | |
| 17537 }, | |
| 17538 | |
| 17539 validateParams: function() { | |
| 17540 // This method only concerns errors for function parameters | |
| 17541 if (_currentFunctBody["(type)"] === "global") { | |
| 17542 return; | |
| 17543 } | |
| 17544 | |
| 17545 var isStrict = state.isStrict(); | |
| 17546 var currentFunctParamScope = _currentFunctBody["(parent)"]; | |
| 17547 | |
| 17548 if (!currentFunctParamScope["(params)"]) { | |
| 17549 return; | |
| 17550 } | |
| 17551 | |
| 17552 currentFunctParamScope["(params)"].forEach(function(labelName) { | |
| 17553 var label = currentFunctParamScope["(labels)"][labelName]; | |
| 17554 | |
| 17555 if (label && label.duplicated) { | |
| 17556 if (isStrict) { | |
| 17557 warning("E011", label["(token)"], labelName); | |
| 17558 } else if (state.option.shadow !== true) { | |
| 17559 warning("W004", label["(token)"], labelName); | |
| 17560 } | |
| 17561 } | |
| 17562 }); | |
| 17563 }, | |
| 17564 | |
| 17565 getUsedOrDefinedGlobals: function() { | |
| 17566 // jshint proto: true | |
| 17567 var list = Object.keys(usedPredefinedAndGlobals); | |
| 17568 | |
| 17569 // If `__proto__` is used as a global variable name, its entry in the | |
| 17570 // lookup table may not be enumerated by `Object.keys` (depending on the | |
| 17571 // environment). | |
| 17572 if (usedPredefinedAndGlobals.__proto__ === marker && | |
| 17573 list.indexOf("__proto__") === -1) { | |
| 17574 list.push("__proto__"); | |
| 17575 } | |
| 17576 | |
| 17577 return list; | |
| 17578 }, | |
| 17579 | |
| 17580 /** | |
| 17581 * Gets an array of implied globals | |
| 17582 * @returns {Array.<{ name: string, line: Array.<number>}>} | |
| 17583 */ | |
| 17584 getImpliedGlobals: function() { | |
| 17585 // jshint proto: true | |
| 17586 var values = _.values(impliedGlobals); | |
| 17587 var hasProto = false; | |
| 17588 | |
| 17589 // If `__proto__` is an implied global variable, its entry in the lookup | |
| 17590 // table may not be enumerated by `_.values` (depending on the | |
| 17591 // environment). | |
| 17592 if (impliedGlobals.__proto__) { | |
| 17593 hasProto = values.some(function(value) { | |
| 17594 return value.name === "__proto__"; | |
| 17595 }); | |
| 17596 | |
| 17597 if (!hasProto) { | |
| 17598 values.push(impliedGlobals.__proto__); | |
| 17599 } | |
| 17600 } | |
| 17601 | |
| 17602 return values; | |
| 17603 }, | |
| 17604 | |
| 17605 /** | |
| 17606 * Returns a list of unused variables | |
| 17607 * @returns {Array} | |
| 17608 */ | |
| 17609 getUnuseds: function() { | |
| 17610 return unuseds; | |
| 17611 }, | |
| 17612 | |
| 17613 has: function(labelName) { | |
| 17614 return Boolean(_getLabel(labelName)); | |
| 17615 }, | |
| 17616 | |
| 17617 labeltype: function(labelName) { | |
| 17618 // returns a labels type or null if not present | |
| 17619 var scopeLabels = _getLabel(labelName); | |
| 17620 if (scopeLabels) { | |
| 17621 return scopeLabels[labelName]["(type)"]; | |
| 17622 } | |
| 17623 return null; | |
| 17624 }, | |
| 17625 | |
| 17626 /** | |
| 17627 * for the exported options, indicating a variable is used outside the file | |
| 17628 */ | |
| 17629 addExported: function(labelName) { | |
| 17630 var globalLabels = _scopeStack[0]["(labels)"]; | |
| 17631 if (_.has(declared, labelName)) { | |
| 17632 // remove the declared token, so we know it is used | |
| 17633 delete declared[labelName]; | |
| 17634 } else if (_.has(globalLabels, labelName)) { | |
| 17635 globalLabels[labelName]["(unused)"] = false; | |
| 17636 } else { | |
| 17637 for (var i = 1; i < _scopeStack.length; i++) { | |
| 17638 var scope = _scopeStack[i]; | |
| 17639 // if `scope.(type)` is not defined, it is a block scope | |
| 17640 if (!scope["(type)"]) { | |
| 17641 if (_.has(scope["(labels)"], labelName) && | |
| 17642 !scope["(labels)"][labelName]["(blockscoped)"]) { | |
| 17643 scope["(labels)"][labelName]["(unused)"] = false; | |
| 17644 return; | |
| 17645 } | |
| 17646 } else { | |
| 17647 break; | |
| 17648 } | |
| 17649 } | |
| 17650 exported[labelName] = true; | |
| 17651 } | |
| 17652 }, | |
| 17653 | |
| 17654 /** | |
| 17655 * Mark an indentifier as es6 module exported | |
| 17656 */ | |
| 17657 setExported: function(labelName, token) { | |
| 17658 this.block.use(labelName, token); | |
| 17659 }, | |
| 17660 | |
| 17661 initialize: function(labelName) { | |
| 17662 if (_current["(labels)"][labelName]) { | |
| 17663 _current["(labels)"][labelName]["(initialized)"] = true; | |
| 17664 } | |
| 17665 }, | |
| 17666 | |
| 17667 /** | |
| 17668 * adds an indentifier to the relevant current scope and creates warnings/errors as necessary | |
| 17669 * @param {string} labelName | |
| 17670 * @param {Object} opts | |
| 17671 * @param {String} opts.type - the type of the label e.g. "param", "var", "let, "const", "import", "function" | |
| 17672 * @param {Token} opts.token - the token pointing at the declaration | |
| 17673 * @param {boolean} opts.initialized - whether the binding should be created in an "initialized" state. | |
| 17674 */ | |
| 17675 addlabel: function(labelName, opts) { | |
| 17676 | |
| 17677 var type = opts.type; | |
| 17678 var token = opts.token; | |
| 17679 var isblockscoped = type === "let" || type === "const" || | |
| 17680 type === "class" || type === "import"; | |
| 17681 var ishoisted = type === "function" || type === "import"; | |
| 17682 var isexported = (isblockscoped ? _current : _currentFunctBody)["(type)"] === "global" && | |
| 17683 _.has(exported, labelName); | |
| 17684 | |
| 17685 // outer shadow check (inner is only on non-block scoped) | |
| 17686 _checkOuterShadow(labelName, token, type); | |
| 17687 | |
| 17688 if (isblockscoped) { | |
| 17689 | |
| 17690 var declaredInCurrentScope = _current["(labels)"][labelName]; | |
| 17691 // for block scoped variables, params are seen in the current scope as the root function | |
| 17692 // scope, so check these too. | |
| 17693 if (!declaredInCurrentScope && _current === _currentFunctBody && | |
| 17694 _current["(type)"] !== "global") { | |
| 17695 declaredInCurrentScope = !!_currentFunctBody["(parent)"]["(labels)"][labelName]; | |
| 17696 } | |
| 17697 | |
| 17698 // if its not already defined (which is an error, so ignore) and is used in TDZ | |
| 17699 if (!declaredInCurrentScope && _current["(usages)"][labelName]) { | |
| 17700 var usage = _current["(usages)"][labelName]; | |
| 17701 // if its in a sub function it is not necessarily an error, just latedef | |
| 17702 if (usage["(onlyUsedSubFunction)"] || ishoisted) { | |
| 17703 _latedefWarning(type, labelName, token); | |
| 17704 } else if (!ishoisted) { | |
| 17705 // this is a clear illegal usage for block scoped variables | |
| 17706 warning("E056", token, labelName, type); | |
| 17707 } | |
| 17708 } | |
| 17709 | |
| 17710 // if this scope has the variable defined, its a re-definition error | |
| 17711 if (declaredInCurrentScope) { | |
| 17712 warning("E011", token, labelName); | |
| 17713 } | |
| 17714 else if (state.option.shadow === "outer") { | |
| 17715 | |
| 17716 // if shadow is outer, for block scope we want to detect any shadowing within this function | |
| 17717 if (scopeManagerInst.funct.has(labelName)) { | |
| 17718 warning("W004", token, labelName); | |
| 17719 } | |
| 17720 } | |
| 17721 | |
| 17722 scopeManagerInst.block.add( | |
| 17723 labelName, type, token, !isexported, opts.initialized | |
| 17724 ); | |
| 17725 | |
| 17726 } else { | |
| 17727 | |
| 17728 var declaredInCurrentFunctionScope = scopeManagerInst.funct.has(labelName); | |
| 17729 | |
| 17730 // check for late definition, ignore if already declared | |
| 17731 if (!declaredInCurrentFunctionScope && usedSoFarInCurrentFunction(labelName)) { | |
| 17732 _latedefWarning(type, labelName, token); | |
| 17733 } | |
| 17734 | |
| 17735 // defining with a var or a function when a block scope variable of the same name | |
| 17736 // is in scope is an error | |
| 17737 if (scopeManagerInst.funct.has(labelName, { onlyBlockscoped: true })) { | |
| 17738 warning("E011", token, labelName); | |
| 17739 } else if (state.option.shadow !== true) { | |
| 17740 // now since we didn't get any block scope variables, test for var/function | |
| 17741 // shadowing | |
| 17742 if (declaredInCurrentFunctionScope && labelName !== "__proto__") { | |
| 17743 | |
| 17744 // see https://github.com/jshint/jshint/issues/2400 | |
| 17745 if (_currentFunctBody["(type)"] !== "global") { | |
| 17746 warning("W004", token, labelName); | |
| 17747 } | |
| 17748 } | |
| 17749 } | |
| 17750 | |
| 17751 scopeManagerInst.funct.add(labelName, type, token, !isexported); | |
| 17752 | |
| 17753 if (_currentFunctBody["(type)"] === "global" && !state.impliedClosure()) { | |
| 17754 usedPredefinedAndGlobals[labelName] = marker; | |
| 17755 } | |
| 17756 } | |
| 17757 }, | |
| 17758 | |
| 17759 funct: { | |
| 17760 /** | |
| 17761 * Returns the label type given certain options | |
| 17762 * @param labelName | |
| 17763 * @param {Object=} options | |
| 17764 * @param {Boolean=} options.onlyBlockscoped - only include block scoped labels | |
| 17765 * @param {Boolean=} options.excludeParams - exclude the param scope | |
| 17766 * @param {Boolean=} options.excludeCurrent - exclude the current scope | |
| 17767 * @returns {String} | |
| 17768 */ | |
| 17769 labeltype: function(labelName, options) { | |
| 17770 var onlyBlockscoped = options && options.onlyBlockscoped; | |
| 17771 var excludeParams = options && options.excludeParams; | |
| 17772 var currentScopeIndex = _scopeStack.length - (options && options.excludeCurrent ? 2 : 1); | |
| 17773 for (var i = currentScopeIndex; i >= 0; i--) { | |
| 17774 var current = _scopeStack[i]; | |
| 17775 if (current["(labels)"][labelName] && | |
| 17776 (!onlyBlockscoped || current["(labels)"][labelName]["(blockscoped)"])) { | |
| 17777 return current["(labels)"][labelName]["(type)"]; | |
| 17778 } | |
| 17779 var scopeCheck = excludeParams ? _scopeStack[ i - 1 ] : current; | |
| 17780 if (scopeCheck && scopeCheck["(type)"] === "functionparams") { | |
| 17781 return null; | |
| 17782 } | |
| 17783 } | |
| 17784 return null; | |
| 17785 }, | |
| 17786 /** | |
| 17787 * Returns if a break label exists in the function scope | |
| 17788 * @param {string} labelName | |
| 17789 * @returns {boolean} | |
| 17790 */ | |
| 17791 hasBreakLabel: function(labelName) { | |
| 17792 for (var i = _scopeStack.length - 1; i >= 0; i--) { | |
| 17793 var current = _scopeStack[i]; | |
| 17794 | |
| 17795 if (current["(breakLabels)"][labelName]) { | |
| 17796 return true; | |
| 17797 } | |
| 17798 if (current["(type)"] === "functionparams") { | |
| 17799 return false; | |
| 17800 } | |
| 17801 } | |
| 17802 return false; | |
| 17803 }, | |
| 17804 /** | |
| 17805 * Returns if the label is in the current function scope | |
| 17806 * See scopeManager.funct.labelType for options | |
| 17807 */ | |
| 17808 has: function(labelName, options) { | |
| 17809 return Boolean(this.labeltype(labelName, options)); | |
| 17810 }, | |
| 17811 | |
| 17812 /** | |
| 17813 * Adds a new function scoped variable | |
| 17814 * see block.add for block scoped | |
| 17815 */ | |
| 17816 add: function(labelName, type, tok, unused) { | |
| 17817 _current["(labels)"][labelName] = { | |
| 17818 "(type)" : type, | |
| 17819 "(token)": tok, | |
| 17820 "(blockscoped)": false, | |
| 17821 "(function)": _currentFunctBody, | |
| 17822 "(unused)": unused }; | |
| 17823 } | |
| 17824 }, | |
| 17825 | |
| 17826 block: { | |
| 17827 | |
| 17828 /** | |
| 17829 * is the current block global? | |
| 17830 * @returns Boolean | |
| 17831 */ | |
| 17832 isGlobal: function() { | |
| 17833 return _current["(type)"] === "global"; | |
| 17834 }, | |
| 17835 | |
| 17836 use: function(labelName, token) { | |
| 17837 | |
| 17838 // if resolves to current function params, then do not store usage just resolve | |
| 17839 // this is because function(a) { var a; a = a; } will resolve to the param, not | |
| 17840 // to the unset var | |
| 17841 // first check the param is used | |
| 17842 var paramScope = _currentFunctBody["(parent)"]; | |
| 17843 if (paramScope && paramScope["(labels)"][labelName] && | |
| 17844 paramScope["(labels)"][labelName]["(type)"] === "param") { | |
| 17845 | |
| 17846 // then check its not declared by a block scope variable | |
| 17847 if (!scopeManagerInst.funct.has(labelName, | |
| 17848 { excludeParams: true, onlyBlockscoped: true })) { | |
| 17849 paramScope["(labels)"][labelName]["(unused)"] = false; | |
| 17850 } | |
| 17851 } | |
| 17852 | |
| 17853 if (token && (state.ignored.W117 || state.option.undef === false)) { | |
| 17854 token.ignoreUndef = true; | |
| 17855 } | |
| 17856 | |
| 17857 _setupUsages(labelName); | |
| 17858 | |
| 17859 _current["(usages)"][labelName]["(onlyUsedSubFunction)"] = false; | |
| 17860 | |
| 17861 if (token) { | |
| 17862 token["(function)"] = _currentFunctBody; | |
| 17863 _current["(usages)"][labelName]["(tokens)"].push(token); | |
| 17864 } | |
| 17865 | |
| 17866 // blockscoped vars can't be used within their initializer (TDZ) | |
| 17867 var label = _current["(labels)"][labelName]; | |
| 17868 if (label && label["(blockscoped)"] && !label["(initialized)"]) { | |
| 17869 error("E056", token, labelName, label["(type)"]); | |
| 17870 } | |
| 17871 }, | |
| 17872 | |
| 17873 reassign: function(labelName, token) { | |
| 17874 token.ignoreW020 = state.ignored.W020; | |
| 17875 token.ignoreW021 = state.ignored.W021; | |
| 17876 | |
| 17877 this.modify(labelName, token); | |
| 17878 | |
| 17879 _current["(usages)"][labelName]["(reassigned)"].push(token); | |
| 17880 }, | |
| 17881 | |
| 17882 modify: function(labelName, token) { | |
| 17883 | |
| 17884 _setupUsages(labelName); | |
| 17885 | |
| 17886 _current["(usages)"][labelName]["(onlyUsedSubFunction)"] = false; | |
| 17887 _current["(usages)"][labelName]["(modified)"].push(token); | |
| 17888 }, | |
| 17889 | |
| 17890 /** | |
| 17891 * Adds a new variable | |
| 17892 */ | |
| 17893 add: function(labelName, type, tok, unused, initialized) { | |
| 17894 _current["(labels)"][labelName] = { | |
| 17895 "(type)" : type, | |
| 17896 "(token)": tok, | |
| 17897 "(initialized)": !!initialized, | |
| 17898 "(blockscoped)": true, | |
| 17899 "(unused)": unused }; | |
| 17900 }, | |
| 17901 | |
| 17902 addBreakLabel: function(labelName, opts) { | |
| 17903 var token = opts.token; | |
| 17904 if (scopeManagerInst.funct.hasBreakLabel(labelName)) { | |
| 17905 warning("E011", token, labelName); | |
| 17906 } | |
| 17907 else if (state.option.shadow === "outer") { | |
| 17908 if (scopeManagerInst.funct.has(labelName)) { | |
| 17909 warning("W004", token, labelName); | |
| 17910 } else { | |
| 17911 _checkOuterShadow(labelName, token); | |
| 17912 } | |
| 17913 } | |
| 17914 _current["(breakLabels)"][labelName] = token; | |
| 17915 } | |
| 17916 } | |
| 17917 }; | |
| 17918 return scopeManagerInst; | |
| 17919 }; | |
| 17920 | |
| 17921 module.exports = scopeManager; | |
| 17922 | |
| 17923 },{"events":5,"lodash":12}],19:[function(require,module,exports){ | |
| 17924 "use strict"; | |
| 17925 var NameStack = require("./name-stack.js"); | |
| 17926 | |
| 17927 var state = { | |
| 17928 syntax: {}, | |
| 17929 | |
| 17930 /** | |
| 17931 * Determine if the code currently being linted is strict mode code. | |
| 17932 * | |
| 17933 * @returns {boolean} | |
| 17934 */ | |
| 17935 isStrict: function() { | |
| 17936 return this.directive["use strict"] || this.inClassBody || | |
| 17937 this.option.module || this.option.strict === "implied"; | |
| 17938 }, | |
| 17939 | |
| 17940 /** | |
| 17941 * Determine if the current state warrants a warning for statements outside | |
| 17942 * of strict mode code. | |
| 17943 * | |
| 17944 * While emitting warnings based on function scope would be more intuitive | |
| 17945 * (and less noisy), JSHint observes statement-based semantics in order to | |
| 17946 * preserve legacy behavior. | |
| 17947 * | |
| 17948 * This method does not take the state of the parser into account, making no | |
| 17949 * distinction between global code and function code. Because the "missing | |
| 17950 * 'use strict'" warning is *also* reported at function boundaries, this | |
| 17951 * function interprets `strict` option values `true` and `undefined` as | |
| 17952 * equivalent. | |
| 17953 */ | |
| 17954 stmtMissingStrict: function() { | |
| 17955 if (this.option.strict === "global") { | |
| 17956 return true; | |
| 17957 } | |
| 17958 | |
| 17959 if (this.option.strict === false) { | |
| 17960 return false; | |
| 17961 } | |
| 17962 | |
| 17963 if (this.option.globalstrict) { | |
| 17964 return true; | |
| 17965 } | |
| 17966 | |
| 17967 return false; | |
| 17968 }, | |
| 17969 | |
| 17970 allowsGlobalUsd: function() { | |
| 17971 return this.option.strict === "global" || this.option.globalstrict || | |
| 17972 this.option.module || this.impliedClosure(); | |
| 17973 }, | |
| 17974 | |
| 17975 /** | |
| 17976 * Determine if the current configuration describes an environment that is | |
| 17977 * wrapped in an immediately-invoked function expression prior to evaluation. | |
| 17978 * | |
| 17979 * @returns {boolean} | |
| 17980 */ | |
| 17981 impliedClosure: function() { | |
| 17982 return this.option.node || this.option.phantom || this.option.browserify; | |
| 17983 }, | |
| 17984 | |
| 17985 // Assumption: chronologically ES3 < ES5 < ES6 < Moz | |
| 17986 | |
| 17987 inMoz: function() { | |
| 17988 return this.option.moz; | |
| 17989 }, | |
| 17990 | |
| 17991 /** | |
| 17992 * @param {boolean} strict - When `true`, only consider ES6 when in | |
| 17993 * "esversion: 6" code. | |
| 17994 */ | |
| 17995 inES6: function(strict) { | |
| 17996 if (strict) { | |
| 17997 return this.esVersion === 6; | |
| 17998 } | |
| 17999 return this.option.moz || this.esVersion >= 6; | |
| 18000 }, | |
| 18001 | |
| 18002 /** | |
| 18003 * @param {boolean} strict - When `true`, return `true` only when | |
| 18004 * esVersion is exactly 5 | |
| 18005 */ | |
| 18006 inES5: function(strict) { | |
| 18007 if (strict) { | |
| 18008 return (!this.esVersion || this.esVersion === 5) && !this.option.moz; | |
| 18009 } | |
| 18010 return !this.esVersion || this.esVersion >= 5 || this.option.moz; | |
| 18011 }, | |
| 18012 | |
| 18013 /** | |
| 18014 * Determine the current version of the input language by inspecting the | |
| 18015 * value of all ECMAScript-version-related options. This logic is necessary | |
| 18016 * to ensure compatibility with deprecated options `es3`, `es5`, and | |
| 18017 * `esnext`, and it may be drastically simplified when those options are | |
| 18018 * removed. | |
| 18019 * | |
| 18020 * @returns {string|null} - the name of any incompatible option detected, | |
| 18021 * `null` otherwise | |
| 18022 */ | |
| 18023 inferEsVersion: function() { | |
| 18024 var badOpt = null; | |
| 18025 | |
| 18026 if (this.option.esversion) { | |
| 18027 if (this.option.es3) { | |
| 18028 badOpt = "es3"; | |
| 18029 } else if (this.option.es5) { | |
| 18030 badOpt = "es5"; | |
| 18031 } else if (this.option.esnext) { | |
| 18032 badOpt = "esnext"; | |
| 18033 } | |
| 18034 | |
| 18035 if (badOpt) { | |
| 18036 return badOpt; | |
| 18037 } | |
| 18038 | |
| 18039 if (this.option.esversion === 2015) { | |
| 18040 this.esVersion = 6; | |
| 18041 } else { | |
| 18042 this.esVersion = this.option.esversion; | |
| 18043 } | |
| 18044 } else if (this.option.es3) { | |
| 18045 this.esVersion = 3; | |
| 18046 } else if (this.option.esnext) { | |
| 18047 this.esVersion = 6; | |
| 18048 } | |
| 18049 | |
| 18050 return null; | |
| 18051 }, | |
| 18052 | |
| 18053 reset: function() { | |
| 18054 this.tokens = { | |
| 18055 prev: null, | |
| 18056 next: null, | |
| 18057 curr: null | |
| 18058 }; | |
| 18059 | |
| 18060 this.option = {}; | |
| 18061 this.esVersion = 5; | |
| 18062 this.funct = null; | |
| 18063 this.ignored = {}; | |
| 18064 this.directive = {}; | |
| 18065 this.jsonMode = false; | |
| 18066 this.jsonWarnings = []; | |
| 18067 this.lines = []; | |
| 18068 this.tab = ""; | |
| 18069 this.cache = {}; // Node.JS doesn't have Map. Sniff. | |
| 18070 this.ignoredLines = {}; | |
| 18071 this.forinifcheckneeded = false; | |
| 18072 this.nameStack = new NameStack(); | |
| 18073 this.inClassBody = false; | |
| 18074 } | |
| 18075 }; | |
| 18076 | |
| 18077 exports.state = state; | |
| 18078 | |
| 18079 },{"./name-stack.js":15}],20:[function(require,module,exports){ | |
| 18080 "use strict"; | |
| 18081 | |
| 18082 exports.register = function(linter) { | |
| 18083 // Check for properties named __proto__. This special property was | |
| 18084 // deprecated and then re-introduced for ES6. | |
| 18085 | |
| 18086 linter.on("Identifier", function style_scanProto(data) { | |
| 18087 if (linter.getOption("proto")) { | |
| 18088 return; | |
| 18089 } | |
| 18090 | |
| 18091 if (data.name === "__proto__") { | |
| 18092 linter.warn("W103", { | |
| 18093 line: data.line, | |
| 18094 char: data.char, | |
| 18095 data: [ data.name, "6" ] | |
| 18096 }); | |
| 18097 } | |
| 18098 }); | |
| 18099 | |
| 18100 // Check for properties named __iterator__. This is a special property | |
| 18101 // available only in browsers with JavaScript 1.7 implementation, but | |
| 18102 // it is deprecated for ES6 | |
| 18103 | |
| 18104 linter.on("Identifier", function style_scanIterator(data) { | |
| 18105 if (linter.getOption("iterator")) { | |
| 18106 return; | |
| 18107 } | |
| 18108 | |
| 18109 if (data.name === "__iterator__") { | |
| 18110 linter.warn("W103", { | |
| 18111 line: data.line, | |
| 18112 char: data.char, | |
| 18113 data: [ data.name ] | |
| 18114 }); | |
| 18115 } | |
| 18116 }); | |
| 18117 | |
| 18118 // Check that all identifiers are using camelCase notation. | |
| 18119 // Exceptions: names like MY_VAR and _myVar. | |
| 18120 | |
| 18121 linter.on("Identifier", function style_scanCamelCase(data) { | |
| 18122 if (!linter.getOption("camelcase")) { | |
| 18123 return; | |
| 18124 } | |
| 18125 | |
| 18126 if (data.name.replace(/^_+|_+$/g, "").indexOf("_") > -1 && !data.name.match(/^[A-Z0-9_]*$/)) { | |
| 18127 linter.warn("W106", { | |
| 18128 line: data.line, | |
| 18129 char: data.char, | |
| 18130 data: [ data.name ] | |
| 18131 }); | |
| 18132 } | |
| 18133 }); | |
| 18134 | |
| 18135 // Enforce consistency in style of quoting. | |
| 18136 | |
| 18137 linter.on("String", function style_scanQuotes(data) { | |
| 18138 var quotmark = linter.getOption("quotmark"); | |
| 18139 var code; | |
| 18140 | |
| 18141 if (!quotmark) { | |
| 18142 return; | |
| 18143 } | |
| 18144 | |
| 18145 // If quotmark is set to 'single' warn about all double-quotes. | |
| 18146 | |
| 18147 if (quotmark === "single" && data.quote !== "'") { | |
| 18148 code = "W109"; | |
| 18149 } | |
| 18150 | |
| 18151 // If quotmark is set to 'double' warn about all single-quotes. | |
| 18152 | |
| 18153 if (quotmark === "double" && data.quote !== "\"") { | |
| 18154 code = "W108"; | |
| 18155 } | |
| 18156 | |
| 18157 // If quotmark is set to true, remember the first quotation style | |
| 18158 // and then warn about all others. | |
| 18159 | |
| 18160 if (quotmark === true) { | |
| 18161 if (!linter.getCache("quotmark")) { | |
| 18162 linter.setCache("quotmark", data.quote); | |
| 18163 } | |
| 18164 | |
| 18165 if (linter.getCache("quotmark") !== data.quote) { | |
| 18166 code = "W110"; | |
| 18167 } | |
| 18168 } | |
| 18169 | |
| 18170 if (code) { | |
| 18171 linter.warn(code, { | |
| 18172 line: data.line, | |
| 18173 char: data.char, | |
| 18174 }); | |
| 18175 } | |
| 18176 }); | |
| 18177 | |
| 18178 linter.on("Number", function style_scanNumbers(data) { | |
| 18179 if (data.value.charAt(0) === ".") { | |
| 18180 // Warn about a leading decimal point. | |
| 18181 linter.warn("W008", { | |
| 18182 line: data.line, | |
| 18183 char: data.char, | |
| 18184 data: [ data.value ] | |
| 18185 }); | |
| 18186 } | |
| 18187 | |
| 18188 if (data.value.substr(data.value.length - 1) === ".") { | |
| 18189 // Warn about a trailing decimal point. | |
| 18190 linter.warn("W047", { | |
| 18191 line: data.line, | |
| 18192 char: data.char, | |
| 18193 data: [ data.value ] | |
| 18194 }); | |
| 18195 } | |
| 18196 | |
| 18197 if (/^00+/.test(data.value)) { | |
| 18198 // Multiple leading zeroes. | |
| 18199 linter.warn("W046", { | |
| 18200 line: data.line, | |
| 18201 char: data.char, | |
| 18202 data: [ data.value ] | |
| 18203 }); | |
| 18204 } | |
| 18205 }); | |
| 18206 | |
| 18207 // Warn about script URLs. | |
| 18208 | |
| 18209 linter.on("String", function style_scanJavaScriptURLs(data) { | |
| 18210 var re = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i; | |
| 18211 | |
| 18212 if (linter.getOption("scripturl")) { | |
| 18213 return; | |
| 18214 } | |
| 18215 | |
| 18216 if (re.test(data.value)) { | |
| 18217 linter.warn("W107", { | |
| 18218 line: data.line, | |
| 18219 char: data.char | |
| 18220 }); | |
| 18221 } | |
| 18222 }); | |
| 18223 }; | |
| 18224 | |
| 18225 },{}],21:[function(require,module,exports){ | |
| 18226 // jshint -W001 | |
| 18227 | |
| 18228 "use strict"; | |
| 18229 | |
| 18230 // Identifiers provided by the ECMAScript standard. | |
| 18231 | |
| 18232 exports.reservedVars = { | |
| 18233 arguments : false, | |
| 18234 NaN : false | |
| 18235 }; | |
| 18236 | |
| 18237 exports.ecmaIdentifiers = { | |
| 18238 3: { | |
| 18239 Array : false, | |
| 18240 Boolean : false, | |
| 18241 Date : false, | |
| 18242 decodeURI : false, | |
| 18243 decodeURIComponent : false, | |
| 18244 encodeURI : false, | |
| 18245 encodeURIComponent : false, | |
| 18246 Error : false, | |
| 18247 "eval" : false, | |
| 18248 EvalError : false, | |
| 18249 Function : false, | |
| 18250 hasOwnProperty : false, | |
| 18251 isFinite : false, | |
| 18252 isNaN : false, | |
| 18253 Math : false, | |
| 18254 Number : false, | |
| 18255 Object : false, | |
| 18256 parseInt : false, | |
| 18257 parseFloat : false, | |
| 18258 RangeError : false, | |
| 18259 ReferenceError : false, | |
| 18260 RegExp : false, | |
| 18261 String : false, | |
| 18262 SyntaxError : false, | |
| 18263 TypeError : false, | |
| 18264 URIError : false | |
| 18265 }, | |
| 18266 5: { | |
| 18267 JSON : false | |
| 18268 }, | |
| 18269 6: { | |
| 18270 ArrayBuffer : false, | |
| 18271 DataView : false, | |
| 18272 Float32Array : false, | |
| 18273 Float64Array : false, | |
| 18274 Int8Array : false, | |
| 18275 Int16Array : false, | |
| 18276 Int32Array : false, | |
| 18277 Map : false, | |
| 18278 Promise : false, | |
| 18279 Proxy : false, | |
| 18280 Reflect : false, | |
| 18281 Set : false, | |
| 18282 Symbol : false, | |
| 18283 Uint8Array : false, | |
| 18284 Uint16Array : false, | |
| 18285 Uint32Array : false, | |
| 18286 Uint8ClampledArray : false, | |
| 18287 WeakMap : false, | |
| 18288 WeakSet : false | |
| 18289 } | |
| 18290 }; | |
| 18291 | |
| 18292 // Global variables commonly provided by a web browser environment. | |
| 18293 | |
| 18294 exports.browser = { | |
| 18295 Audio : false, | |
| 18296 Blob : false, | |
| 18297 addEventListener : false, | |
| 18298 applicationCache : false, | |
| 18299 atob : false, | |
| 18300 blur : false, | |
| 18301 btoa : false, | |
| 18302 cancelAnimationFrame : false, | |
| 18303 CanvasGradient : false, | |
| 18304 CanvasPattern : false, | |
| 18305 CanvasRenderingContext2D: false, | |
| 18306 CSS : false, | |
| 18307 clearInterval : false, | |
| 18308 clearTimeout : false, | |
| 18309 close : false, | |
| 18310 closed : false, | |
| 18311 Comment : false, | |
| 18312 CompositionEvent : false, | |
| 18313 CustomEvent : false, | |
| 18314 DOMParser : false, | |
| 18315 defaultStatus : false, | |
| 18316 Document : false, | |
| 18317 document : false, | |
| 18318 DocumentFragment : false, | |
| 18319 Element : false, | |
| 18320 ElementTimeControl : false, | |
| 18321 Event : false, | |
| 18322 event : false, | |
| 18323 fetch : false, | |
| 18324 File : false, | |
| 18325 FileList : false, | |
| 18326 FileReader : false, | |
| 18327 FormData : false, | |
| 18328 focus : false, | |
| 18329 frames : false, | |
| 18330 getComputedStyle : false, | |
| 18331 HTMLElement : false, | |
| 18332 HTMLAnchorElement : false, | |
| 18333 HTMLBaseElement : false, | |
| 18334 HTMLBlockquoteElement: false, | |
| 18335 HTMLBodyElement : false, | |
| 18336 HTMLBRElement : false, | |
| 18337 HTMLButtonElement : false, | |
| 18338 HTMLCanvasElement : false, | |
| 18339 HTMLCollection : false, | |
| 18340 HTMLDirectoryElement : false, | |
| 18341 HTMLDivElement : false, | |
| 18342 HTMLDListElement : false, | |
| 18343 HTMLFieldSetElement : false, | |
| 18344 HTMLFontElement : false, | |
| 18345 HTMLFormElement : false, | |
| 18346 HTMLFrameElement : false, | |
| 18347 HTMLFrameSetElement : false, | |
| 18348 HTMLHeadElement : false, | |
| 18349 HTMLHeadingElement : false, | |
| 18350 HTMLHRElement : false, | |
| 18351 HTMLHtmlElement : false, | |
| 18352 HTMLIFrameElement : false, | |
| 18353 HTMLImageElement : false, | |
| 18354 HTMLInputElement : false, | |
| 18355 HTMLIsIndexElement : false, | |
| 18356 HTMLLabelElement : false, | |
| 18357 HTMLLayerElement : false, | |
| 18358 HTMLLegendElement : false, | |
| 18359 HTMLLIElement : false, | |
| 18360 HTMLLinkElement : false, | |
| 18361 HTMLMapElement : false, | |
| 18362 HTMLMenuElement : false, | |
| 18363 HTMLMetaElement : false, | |
| 18364 HTMLModElement : false, | |
| 18365 HTMLObjectElement : false, | |
| 18366 HTMLOListElement : false, | |
| 18367 HTMLOptGroupElement : false, | |
| 18368 HTMLOptionElement : false, | |
| 18369 HTMLParagraphElement : false, | |
| 18370 HTMLParamElement : false, | |
| 18371 HTMLPreElement : false, | |
| 18372 HTMLQuoteElement : false, | |
| 18373 HTMLScriptElement : false, | |
| 18374 HTMLSelectElement : false, | |
| 18375 HTMLStyleElement : false, | |
| 18376 HTMLTableCaptionElement: false, | |
| 18377 HTMLTableCellElement : false, | |
| 18378 HTMLTableColElement : false, | |
| 18379 HTMLTableElement : false, | |
| 18380 HTMLTableRowElement : false, | |
| 18381 HTMLTableSectionElement: false, | |
| 18382 HTMLTemplateElement : false, | |
| 18383 HTMLTextAreaElement : false, | |
| 18384 HTMLTitleElement : false, | |
| 18385 HTMLUListElement : false, | |
| 18386 HTMLVideoElement : false, | |
| 18387 history : false, | |
| 18388 Image : false, | |
| 18389 Intl : false, | |
| 18390 length : false, | |
| 18391 localStorage : false, | |
| 18392 location : false, | |
| 18393 matchMedia : false, | |
| 18394 MediaRecorder : false, | |
| 18395 MessageChannel : false, | |
| 18396 MessageEvent : false, | |
| 18397 MessagePort : false, | |
| 18398 MouseEvent : false, | |
| 18399 moveBy : false, | |
| 18400 moveTo : false, | |
| 18401 MutationObserver : false, | |
| 18402 name : false, | |
| 18403 Node : false, | |
| 18404 NodeFilter : false, | |
| 18405 NodeList : false, | |
| 18406 Notification : false, | |
| 18407 navigator : false, | |
| 18408 onbeforeunload : true, | |
| 18409 onblur : true, | |
| 18410 onerror : true, | |
| 18411 onfocus : true, | |
| 18412 onload : true, | |
| 18413 onresize : true, | |
| 18414 onunload : true, | |
| 18415 open : false, | |
| 18416 openDatabase : false, | |
| 18417 opener : false, | |
| 18418 Option : false, | |
| 18419 parent : false, | |
| 18420 performance : false, | |
| 18421 print : false, | |
| 18422 Range : false, | |
| 18423 requestAnimationFrame : false, | |
| 18424 removeEventListener : false, | |
| 18425 resizeBy : false, | |
| 18426 resizeTo : false, | |
| 18427 screen : false, | |
| 18428 scroll : false, | |
| 18429 scrollBy : false, | |
| 18430 scrollTo : false, | |
| 18431 sessionStorage : false, | |
| 18432 setInterval : false, | |
| 18433 setTimeout : false, | |
| 18434 SharedWorker : false, | |
| 18435 status : false, | |
| 18436 Storage : false, | |
| 18437 SVGAElement : false, | |
| 18438 SVGAltGlyphDefElement: false, | |
| 18439 SVGAltGlyphElement : false, | |
| 18440 SVGAltGlyphItemElement: false, | |
| 18441 SVGAngle : false, | |
| 18442 SVGAnimateColorElement: false, | |
| 18443 SVGAnimateElement : false, | |
| 18444 SVGAnimateMotionElement: false, | |
| 18445 SVGAnimateTransformElement: false, | |
| 18446 SVGAnimatedAngle : false, | |
| 18447 SVGAnimatedBoolean : false, | |
| 18448 SVGAnimatedEnumeration: false, | |
| 18449 SVGAnimatedInteger : false, | |
| 18450 SVGAnimatedLength : false, | |
| 18451 SVGAnimatedLengthList: false, | |
| 18452 SVGAnimatedNumber : false, | |
| 18453 SVGAnimatedNumberList: false, | |
| 18454 SVGAnimatedPathData : false, | |
| 18455 SVGAnimatedPoints : false, | |
| 18456 SVGAnimatedPreserveAspectRatio: false, | |
| 18457 SVGAnimatedRect : false, | |
| 18458 SVGAnimatedString : false, | |
| 18459 SVGAnimatedTransformList: false, | |
| 18460 SVGAnimationElement : false, | |
| 18461 SVGCSSRule : false, | |
| 18462 SVGCircleElement : false, | |
| 18463 SVGClipPathElement : false, | |
| 18464 SVGColor : false, | |
| 18465 SVGColorProfileElement: false, | |
| 18466 SVGColorProfileRule : false, | |
| 18467 SVGComponentTransferFunctionElement: false, | |
| 18468 SVGCursorElement : false, | |
| 18469 SVGDefsElement : false, | |
| 18470 SVGDescElement : false, | |
| 18471 SVGDocument : false, | |
| 18472 SVGElement : false, | |
| 18473 SVGElementInstance : false, | |
| 18474 SVGElementInstanceList: false, | |
| 18475 SVGEllipseElement : false, | |
| 18476 SVGExternalResourcesRequired: false, | |
| 18477 SVGFEBlendElement : false, | |
| 18478 SVGFEColorMatrixElement: false, | |
| 18479 SVGFEComponentTransferElement: false, | |
| 18480 SVGFECompositeElement: false, | |
| 18481 SVGFEConvolveMatrixElement: false, | |
| 18482 SVGFEDiffuseLightingElement: false, | |
| 18483 SVGFEDisplacementMapElement: false, | |
| 18484 SVGFEDistantLightElement: false, | |
| 18485 SVGFEFloodElement : false, | |
| 18486 SVGFEFuncAElement : false, | |
| 18487 SVGFEFuncBElement : false, | |
| 18488 SVGFEFuncGElement : false, | |
| 18489 SVGFEFuncRElement : false, | |
| 18490 SVGFEGaussianBlurElement: false, | |
| 18491 SVGFEImageElement : false, | |
| 18492 SVGFEMergeElement : false, | |
| 18493 SVGFEMergeNodeElement: false, | |
| 18494 SVGFEMorphologyElement: false, | |
| 18495 SVGFEOffsetElement : false, | |
| 18496 SVGFEPointLightElement: false, | |
| 18497 SVGFESpecularLightingElement: false, | |
| 18498 SVGFESpotLightElement: false, | |
| 18499 SVGFETileElement : false, | |
| 18500 SVGFETurbulenceElement: false, | |
| 18501 SVGFilterElement : false, | |
| 18502 SVGFilterPrimitiveStandardAttributes: false, | |
| 18503 SVGFitToViewBox : false, | |
| 18504 SVGFontElement : false, | |
| 18505 SVGFontFaceElement : false, | |
| 18506 SVGFontFaceFormatElement: false, | |
| 18507 SVGFontFaceNameElement: false, | |
| 18508 SVGFontFaceSrcElement: false, | |
| 18509 SVGFontFaceUriElement: false, | |
| 18510 SVGForeignObjectElement: false, | |
| 18511 SVGGElement : false, | |
| 18512 SVGGlyphElement : false, | |
| 18513 SVGGlyphRefElement : false, | |
| 18514 SVGGradientElement : false, | |
| 18515 SVGHKernElement : false, | |
| 18516 SVGICCColor : false, | |
| 18517 SVGImageElement : false, | |
| 18518 SVGLangSpace : false, | |
| 18519 SVGLength : false, | |
| 18520 SVGLengthList : false, | |
| 18521 SVGLineElement : false, | |
| 18522 SVGLinearGradientElement: false, | |
| 18523 SVGLocatable : false, | |
| 18524 SVGMPathElement : false, | |
| 18525 SVGMarkerElement : false, | |
| 18526 SVGMaskElement : false, | |
| 18527 SVGMatrix : false, | |
| 18528 SVGMetadataElement : false, | |
| 18529 SVGMissingGlyphElement: false, | |
| 18530 SVGNumber : false, | |
| 18531 SVGNumberList : false, | |
| 18532 SVGPaint : false, | |
| 18533 SVGPathElement : false, | |
| 18534 SVGPathSeg : false, | |
| 18535 SVGPathSegArcAbs : false, | |
| 18536 SVGPathSegArcRel : false, | |
| 18537 SVGPathSegClosePath : false, | |
| 18538 SVGPathSegCurvetoCubicAbs: false, | |
| 18539 SVGPathSegCurvetoCubicRel: false, | |
| 18540 SVGPathSegCurvetoCubicSmoothAbs: false, | |
| 18541 SVGPathSegCurvetoCubicSmoothRel: false, | |
| 18542 SVGPathSegCurvetoQuadraticAbs: false, | |
| 18543 SVGPathSegCurvetoQuadraticRel: false, | |
| 18544 SVGPathSegCurvetoQuadraticSmoothAbs: false, | |
| 18545 SVGPathSegCurvetoQuadraticSmoothRel: false, | |
| 18546 SVGPathSegLinetoAbs : false, | |
| 18547 SVGPathSegLinetoHorizontalAbs: false, | |
| 18548 SVGPathSegLinetoHorizontalRel: false, | |
| 18549 SVGPathSegLinetoRel : false, | |
| 18550 SVGPathSegLinetoVerticalAbs: false, | |
| 18551 SVGPathSegLinetoVerticalRel: false, | |
| 18552 SVGPathSegList : false, | |
| 18553 SVGPathSegMovetoAbs : false, | |
| 18554 SVGPathSegMovetoRel : false, | |
| 18555 SVGPatternElement : false, | |
| 18556 SVGPoint : false, | |
| 18557 SVGPointList : false, | |
| 18558 SVGPolygonElement : false, | |
| 18559 SVGPolylineElement : false, | |
| 18560 SVGPreserveAspectRatio: false, | |
| 18561 SVGRadialGradientElement: false, | |
| 18562 SVGRect : false, | |
| 18563 SVGRectElement : false, | |
| 18564 SVGRenderingIntent : false, | |
| 18565 SVGSVGElement : false, | |
| 18566 SVGScriptElement : false, | |
| 18567 SVGSetElement : false, | |
| 18568 SVGStopElement : false, | |
| 18569 SVGStringList : false, | |
| 18570 SVGStylable : false, | |
| 18571 SVGStyleElement : false, | |
| 18572 SVGSwitchElement : false, | |
| 18573 SVGSymbolElement : false, | |
| 18574 SVGTRefElement : false, | |
| 18575 SVGTSpanElement : false, | |
| 18576 SVGTests : false, | |
| 18577 SVGTextContentElement: false, | |
| 18578 SVGTextElement : false, | |
| 18579 SVGTextPathElement : false, | |
| 18580 SVGTextPositioningElement: false, | |
| 18581 SVGTitleElement : false, | |
| 18582 SVGTransform : false, | |
| 18583 SVGTransformList : false, | |
| 18584 SVGTransformable : false, | |
| 18585 SVGURIReference : false, | |
| 18586 SVGUnitTypes : false, | |
| 18587 SVGUseElement : false, | |
| 18588 SVGVKernElement : false, | |
| 18589 SVGViewElement : false, | |
| 18590 SVGViewSpec : false, | |
| 18591 SVGZoomAndPan : false, | |
| 18592 Text : false, | |
| 18593 TextDecoder : false, | |
| 18594 TextEncoder : false, | |
| 18595 TimeEvent : false, | |
| 18596 top : false, | |
| 18597 URL : false, | |
| 18598 WebGLActiveInfo : false, | |
| 18599 WebGLBuffer : false, | |
| 18600 WebGLContextEvent : false, | |
| 18601 WebGLFramebuffer : false, | |
| 18602 WebGLProgram : false, | |
| 18603 WebGLRenderbuffer : false, | |
| 18604 WebGLRenderingContext: false, | |
| 18605 WebGLShader : false, | |
| 18606 WebGLShaderPrecisionFormat: false, | |
| 18607 WebGLTexture : false, | |
| 18608 WebGLUniformLocation : false, | |
| 18609 WebSocket : false, | |
| 18610 window : false, | |
| 18611 Window : false, | |
| 18612 Worker : false, | |
| 18613 XDomainRequest : false, | |
| 18614 XMLHttpRequest : false, | |
| 18615 XMLSerializer : false, | |
| 18616 XPathEvaluator : false, | |
| 18617 XPathException : false, | |
| 18618 XPathExpression : false, | |
| 18619 XPathNamespace : false, | |
| 18620 XPathNSResolver : false, | |
| 18621 XPathResult : false | |
| 18622 }; | |
| 18623 | |
| 18624 exports.devel = { | |
| 18625 alert : false, | |
| 18626 confirm: false, | |
| 18627 console: false, | |
| 18628 Debug : false, | |
| 18629 opera : false, | |
| 18630 prompt : false | |
| 18631 }; | |
| 18632 | |
| 18633 exports.worker = { | |
| 18634 importScripts : true, | |
| 18635 onmessage : true, | |
| 18636 postMessage : true, | |
| 18637 self : true, | |
| 18638 FileReaderSync : true | |
| 18639 }; | |
| 18640 | |
| 18641 // Widely adopted global names that are not part of ECMAScript standard | |
| 18642 exports.nonstandard = { | |
| 18643 escape : false, | |
| 18644 unescape: false | |
| 18645 }; | |
| 18646 | |
| 18647 // Globals provided by popular JavaScript environments. | |
| 18648 | |
| 18649 exports.couch = { | |
| 18650 "require" : false, | |
| 18651 respond : false, | |
| 18652 getRow : false, | |
| 18653 emit : false, | |
| 18654 send : false, | |
| 18655 start : false, | |
| 18656 sum : false, | |
| 18657 log : false, | |
| 18658 exports : false, | |
| 18659 module : false, | |
| 18660 provides : false | |
| 18661 }; | |
| 18662 | |
| 18663 exports.node = { | |
| 18664 __filename : false, | |
| 18665 __dirname : false, | |
| 18666 GLOBAL : false, | |
| 18667 global : false, | |
| 18668 module : false, | |
| 18669 require : false, | |
| 18670 | |
| 18671 // These globals are writeable because Node allows the following | |
| 18672 // usage pattern: var Buffer = require("buffer").Buffer; | |
| 18673 | |
| 18674 Buffer : true, | |
| 18675 console : true, | |
| 18676 exports : true, | |
| 18677 process : true, | |
| 18678 setTimeout : true, | |
| 18679 clearTimeout : true, | |
| 18680 setInterval : true, | |
| 18681 clearInterval : true, | |
| 18682 setImmediate : true, // v0.9.1+ | |
| 18683 clearImmediate: true // v0.9.1+ | |
| 18684 }; | |
| 18685 | |
| 18686 exports.browserify = { | |
| 18687 __filename : false, | |
| 18688 __dirname : false, | |
| 18689 global : false, | |
| 18690 module : false, | |
| 18691 require : false, | |
| 18692 Buffer : true, | |
| 18693 exports : true, | |
| 18694 process : true | |
| 18695 }; | |
| 18696 | |
| 18697 exports.phantom = { | |
| 18698 phantom : true, | |
| 18699 require : true, | |
| 18700 WebPage : true, | |
| 18701 console : true, // in examples, but undocumented | |
| 18702 exports : true // v1.7+ | |
| 18703 }; | |
| 18704 | |
| 18705 exports.qunit = { | |
| 18706 asyncTest : false, | |
| 18707 deepEqual : false, | |
| 18708 equal : false, | |
| 18709 expect : false, | |
| 18710 module : false, | |
| 18711 notDeepEqual : false, | |
| 18712 notEqual : false, | |
| 18713 notOk : false, | |
| 18714 notPropEqual : false, | |
| 18715 notStrictEqual : false, | |
| 18716 ok : false, | |
| 18717 propEqual : false, | |
| 18718 QUnit : false, | |
| 18719 raises : false, | |
| 18720 start : false, | |
| 18721 stop : false, | |
| 18722 strictEqual : false, | |
| 18723 test : false, | |
| 18724 "throws" : false | |
| 18725 }; | |
| 18726 | |
| 18727 exports.rhino = { | |
| 18728 defineClass : false, | |
| 18729 deserialize : false, | |
| 18730 gc : false, | |
| 18731 help : false, | |
| 18732 importClass : false, | |
| 18733 importPackage: false, | |
| 18734 "java" : false, | |
| 18735 load : false, | |
| 18736 loadClass : false, | |
| 18737 Packages : false, | |
| 18738 print : false, | |
| 18739 quit : false, | |
| 18740 readFile : false, | |
| 18741 readUrl : false, | |
| 18742 runCommand : false, | |
| 18743 seal : false, | |
| 18744 serialize : false, | |
| 18745 spawn : false, | |
| 18746 sync : false, | |
| 18747 toint32 : false, | |
| 18748 version : false | |
| 18749 }; | |
| 18750 | |
| 18751 exports.shelljs = { | |
| 18752 target : false, | |
| 18753 echo : false, | |
| 18754 exit : false, | |
| 18755 cd : false, | |
| 18756 pwd : false, | |
| 18757 ls : false, | |
| 18758 find : false, | |
| 18759 cp : false, | |
| 18760 rm : false, | |
| 18761 mv : false, | |
| 18762 mkdir : false, | |
| 18763 test : false, | |
| 18764 cat : false, | |
| 18765 sed : false, | |
| 18766 grep : false, | |
| 18767 which : false, | |
| 18768 dirs : false, | |
| 18769 pushd : false, | |
| 18770 popd : false, | |
| 18771 env : false, | |
| 18772 exec : false, | |
| 18773 chmod : false, | |
| 18774 config : false, | |
| 18775 error : false, | |
| 18776 tempdir : false | |
| 18777 }; | |
| 18778 | |
| 18779 exports.typed = { | |
| 18780 ArrayBuffer : false, | |
| 18781 ArrayBufferView : false, | |
| 18782 DataView : false, | |
| 18783 Float32Array : false, | |
| 18784 Float64Array : false, | |
| 18785 Int16Array : false, | |
| 18786 Int32Array : false, | |
| 18787 Int8Array : false, | |
| 18788 Uint16Array : false, | |
| 18789 Uint32Array : false, | |
| 18790 Uint8Array : false, | |
| 18791 Uint8ClampedArray : false | |
| 18792 }; | |
| 18793 | |
| 18794 exports.wsh = { | |
| 18795 ActiveXObject : true, | |
| 18796 Enumerator : true, | |
| 18797 GetObject : true, | |
| 18798 ScriptEngine : true, | |
| 18799 ScriptEngineBuildVersion : true, | |
| 18800 ScriptEngineMajorVersion : true, | |
| 18801 ScriptEngineMinorVersion : true, | |
| 18802 VBArray : true, | |
| 18803 WSH : true, | |
| 18804 WScript : true, | |
| 18805 XDomainRequest : true | |
| 18806 }; | |
| 18807 | |
| 18808 // Globals provided by popular JavaScript libraries. | |
| 18809 | |
| 18810 exports.dojo = { | |
| 18811 dojo : false, | |
| 18812 dijit : false, | |
| 18813 dojox : false, | |
| 18814 define : false, | |
| 18815 "require": false | |
| 18816 }; | |
| 18817 | |
| 18818 exports.jquery = { | |
| 18819 "$" : false, | |
| 18820 jQuery : false | |
| 18821 }; | |
| 18822 | |
| 18823 exports.mootools = { | |
| 18824 "$" : false, | |
| 18825 "$$" : false, | |
| 18826 Asset : false, | |
| 18827 Browser : false, | |
| 18828 Chain : false, | |
| 18829 Class : false, | |
| 18830 Color : false, | |
| 18831 Cookie : false, | |
| 18832 Core : false, | |
| 18833 Document : false, | |
| 18834 DomReady : false, | |
| 18835 DOMEvent : false, | |
| 18836 DOMReady : false, | |
| 18837 Drag : false, | |
| 18838 Element : false, | |
| 18839 Elements : false, | |
| 18840 Event : false, | |
| 18841 Events : false, | |
| 18842 Fx : false, | |
| 18843 Group : false, | |
| 18844 Hash : false, | |
| 18845 HtmlTable : false, | |
| 18846 IFrame : false, | |
| 18847 IframeShim : false, | |
| 18848 InputValidator: false, | |
| 18849 instanceOf : false, | |
| 18850 Keyboard : false, | |
| 18851 Locale : false, | |
| 18852 Mask : false, | |
| 18853 MooTools : false, | |
| 18854 Native : false, | |
| 18855 Options : false, | |
| 18856 OverText : false, | |
| 18857 Request : false, | |
| 18858 Scroller : false, | |
| 18859 Slick : false, | |
| 18860 Slider : false, | |
| 18861 Sortables : false, | |
| 18862 Spinner : false, | |
| 18863 Swiff : false, | |
| 18864 Tips : false, | |
| 18865 Type : false, | |
| 18866 typeOf : false, | |
| 18867 URI : false, | |
| 18868 Window : false | |
| 18869 }; | |
| 18870 | |
| 18871 exports.prototypejs = { | |
| 18872 "$" : false, | |
| 18873 "$$" : false, | |
| 18874 "$A" : false, | |
| 18875 "$F" : false, | |
| 18876 "$H" : false, | |
| 18877 "$R" : false, | |
| 18878 "$break" : false, | |
| 18879 "$continue" : false, | |
| 18880 "$w" : false, | |
| 18881 Abstract : false, | |
| 18882 Ajax : false, | |
| 18883 Class : false, | |
| 18884 Enumerable : false, | |
| 18885 Element : false, | |
| 18886 Event : false, | |
| 18887 Field : false, | |
| 18888 Form : false, | |
| 18889 Hash : false, | |
| 18890 Insertion : false, | |
| 18891 ObjectRange : false, | |
| 18892 PeriodicalExecuter: false, | |
| 18893 Position : false, | |
| 18894 Prototype : false, | |
| 18895 Selector : false, | |
| 18896 Template : false, | |
| 18897 Toggle : false, | |
| 18898 Try : false, | |
| 18899 Autocompleter : false, | |
| 18900 Builder : false, | |
| 18901 Control : false, | |
| 18902 Draggable : false, | |
| 18903 Draggables : false, | |
| 18904 Droppables : false, | |
| 18905 Effect : false, | |
| 18906 Sortable : false, | |
| 18907 SortableObserver : false, | |
| 18908 Sound : false, | |
| 18909 Scriptaculous : false | |
| 18910 }; | |
| 18911 | |
| 18912 exports.yui = { | |
| 18913 YUI : false, | |
| 18914 Y : false, | |
| 18915 YUI_config: false | |
| 18916 }; | |
| 18917 | |
| 18918 exports.mocha = { | |
| 18919 // Global (for config etc.) | |
| 18920 mocha : false, | |
| 18921 // BDD | |
| 18922 describe : false, | |
| 18923 xdescribe : false, | |
| 18924 it : false, | |
| 18925 xit : false, | |
| 18926 context : false, | |
| 18927 xcontext : false, | |
| 18928 before : false, | |
| 18929 after : false, | |
| 18930 beforeEach : false, | |
| 18931 afterEach : false, | |
| 18932 // TDD | |
| 18933 suite : false, | |
| 18934 test : false, | |
| 18935 setup : false, | |
| 18936 teardown : false, | |
| 18937 suiteSetup : false, | |
| 18938 suiteTeardown : false | |
| 18939 }; | |
| 18940 | |
| 18941 exports.jasmine = { | |
| 18942 jasmine : false, | |
| 18943 describe : false, | |
| 18944 xdescribe : false, | |
| 18945 it : false, | |
| 18946 xit : false, | |
| 18947 beforeEach : false, | |
| 18948 afterEach : false, | |
| 18949 setFixtures : false, | |
| 18950 loadFixtures: false, | |
| 18951 spyOn : false, | |
| 18952 expect : false, | |
| 18953 // Jasmine 1.3 | |
| 18954 runs : false, | |
| 18955 waitsFor : false, | |
| 18956 waits : false, | |
| 18957 // Jasmine 2.1 | |
| 18958 beforeAll : false, | |
| 18959 afterAll : false, | |
| 18960 fail : false, | |
| 18961 fdescribe : false, | |
| 18962 fit : false, | |
| 18963 pending : false | |
| 18964 }; | |
| 18965 | |
| 18966 },{}],"jshint":[function(require,module,exports){ | |
| 18967 /*! | |
| 18968 * JSHint, by JSHint Community. | |
| 18969 * | |
| 18970 * This file (and this file only) is licensed under the same slightly modified | |
| 18971 * MIT license that JSLint is. It stops evil-doers everywhere: | |
| 18972 * | |
| 18973 * Copyright (c) 2002 Douglas Crockford (www.JSLint.com) | |
| 18974 * | |
| 18975 * Permission is hereby granted, free of charge, to any person obtaining | |
| 18976 * a copy of this software and associated documentation files (the "Software"), | |
| 18977 * to deal in the Software without restriction, including without limitation | |
| 18978 * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| 18979 * and/or sell copies of the Software, and to permit persons to whom | |
| 18980 * the Software is furnished to do so, subject to the following conditions: | |
| 18981 * | |
| 18982 * The above copyright notice and this permission notice shall be included | |
| 18983 * in all copies or substantial portions of the Software. | |
| 18984 * | |
| 18985 * The Software shall be used for Good, not Evil. | |
| 18986 * | |
| 18987 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 18988 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 18989 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 18990 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 18991 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
| 18992 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
| 18993 * DEALINGS IN THE SOFTWARE. | |
| 18994 * | |
| 18995 */ | |
| 18996 | |
| 18997 /*jshint quotmark:double */ | |
| 18998 /*exported console */ | |
| 18999 | |
| 19000 var _ = require("lodash"); | |
| 19001 var events = require("events"); | |
| 19002 var vars = require("./vars.js"); | |
| 19003 var messages = require("./messages.js"); | |
| 19004 var Lexer = require("./lex.js").Lexer; | |
| 19005 var reg = require("./reg.js"); | |
| 19006 var state = require("./state.js").state; | |
| 19007 var style = require("./style.js"); | |
| 19008 var options = require("./options.js"); | |
| 19009 var scopeManager = require("./scope-manager.js"); | |
| 19010 | |
| 19011 // We need this module here because environments such as IE and Rhino | |
| 19012 // don't necessarilly expose the 'console' API and browserify uses | |
| 19013 // it to log things. It's a sad state of affair, really. | |
| 19014 var console = require("console-browserify"); | |
| 19015 | |
| 19016 // We build the application inside a function so that we produce only a singleton | |
| 19017 // variable. That function will be invoked immediately, and its return value is | |
| 19018 // the JSHINT function itself. | |
| 19019 | |
| 19020 var JSHINT = (function() { | |
| 19021 "use strict"; | |
| 19022 | |
| 19023 var api, // Extension API | |
| 19024 | |
| 19025 // These are operators that should not be used with the ! operator. | |
| 19026 bang = { | |
| 19027 "<" : true, | |
| 19028 "<=" : true, | |
| 19029 "==" : true, | |
| 19030 "===": true, | |
| 19031 "!==": true, | |
| 19032 "!=" : true, | |
| 19033 ">" : true, | |
| 19034 ">=" : true, | |
| 19035 "+" : true, | |
| 19036 "-" : true, | |
| 19037 "*" : true, | |
| 19038 "/" : true, | |
| 19039 "%" : true | |
| 19040 }, | |
| 19041 | |
| 19042 declared, // Globals that were declared using /*global ... */ syntax. | |
| 19043 | |
| 19044 functionicity = [ | |
| 19045 "closure", "exception", "global", "label", | |
| 19046 "outer", "unused", "var" | |
| 19047 ], | |
| 19048 | |
| 19049 functions, // All of the functions | |
| 19050 | |
| 19051 inblock, | |
| 19052 indent, | |
| 19053 lookahead, | |
| 19054 lex, | |
| 19055 member, | |
| 19056 membersOnly, | |
| 19057 predefined, // Global variables defined by option | |
| 19058 | |
| 19059 stack, | |
| 19060 urls, | |
| 19061 | |
| 19062 extraModules = [], | |
| 19063 emitter = new events.EventEmitter(); | |
| 19064 | |
| 19065 function checkOption(name, t) { | |
| 19066 name = name.trim(); | |
| 19067 | |
| 19068 if (/^[+-]W\d{3}$/g.test(name)) { | |
| 19069 return true; | |
| 19070 } | |
| 19071 | |
| 19072 if (options.validNames.indexOf(name) === -1) { | |
| 19073 if (t.type !== "jslint" && !_.has(options.removed, name)) { | |
| 19074 error("E001", t, name); | |
| 19075 return false; | |
| 19076 } | |
| 19077 } | |
| 19078 | |
| 19079 return true; | |
| 19080 } | |
| 19081 | |
| 19082 function isString(obj) { | |
| 19083 return Object.prototype.toString.call(obj) === "[object String]"; | |
| 19084 } | |
| 19085 | |
| 19086 function isIdentifier(tkn, value) { | |
| 19087 if (!tkn) | |
| 19088 return false; | |
| 19089 | |
| 19090 if (!tkn.identifier || tkn.value !== value) | |
| 19091 return false; | |
| 19092 | |
| 19093 return true; | |
| 19094 } | |
| 19095 | |
| 19096 function isReserved(token) { | |
| 19097 if (!token.reserved) { | |
| 19098 return false; | |
| 19099 } | |
| 19100 var meta = token.meta; | |
| 19101 | |
| 19102 if (meta && meta.isFutureReservedWord) { | |
| 19103 if (meta.moduleOnly && !state.option.module) { | |
| 19104 return false; | |
| 19105 } | |
| 19106 | |
| 19107 if (state.inES5()) { | |
| 19108 // ES3 FutureReservedWord in an ES5 environment. | |
| 19109 if (!meta.es5) { | |
| 19110 return false; | |
| 19111 } | |
| 19112 | |
| 19113 // Some ES5 FutureReservedWord identifiers are active only | |
| 19114 // within a strict mode environment. | |
| 19115 if (meta.strictOnly) { | |
| 19116 if (!state.option.strict && !state.isStrict()) { | |
| 19117 return false; | |
| 19118 } | |
| 19119 } | |
| 19120 | |
| 19121 if (token.isProperty) { | |
| 19122 return false; | |
| 19123 } | |
| 19124 } | |
| 19125 } | |
| 19126 | |
| 19127 return true; | |
| 19128 } | |
| 19129 | |
| 19130 function supplant(str, data) { | |
| 19131 return str.replace(/\{([^{}]*)\}/g, function(a, b) { | |
| 19132 var r = data[b]; | |
| 19133 return typeof r === "string" || typeof r === "number" ? r : a; | |
| 19134 }); | |
| 19135 } | |
| 19136 | |
| 19137 function combine(dest, src) { | |
| 19138 Object.keys(src).forEach(function(name) { | |
| 19139 if (_.has(JSHINT.blacklist, name)) return; | |
| 19140 dest[name] = src[name]; | |
| 19141 }); | |
| 19142 } | |
| 19143 | |
| 19144 function processenforceall() { | |
| 19145 if (state.option.enforceall) { | |
| 19146 for (var enforceopt in options.bool.enforcing) { | |
| 19147 if (state.option[enforceopt] === undefined && | |
| 19148 !options.noenforceall[enforceopt]) { | |
| 19149 state.option[enforceopt] = true; | |
| 19150 } | |
| 19151 } | |
| 19152 for (var relaxopt in options.bool.relaxing) { | |
| 19153 if (state.option[relaxopt] === undefined) { | |
| 19154 state.option[relaxopt] = false; | |
| 19155 } | |
| 19156 } | |
| 19157 } | |
| 19158 } | |
| 19159 | |
| 19160 /** | |
| 19161 * Apply all linting options according to the status of the `state` object. | |
| 19162 */ | |
| 19163 function applyOptions() { | |
| 19164 var badESOpt = null; | |
| 19165 processenforceall(); | |
| 19166 | |
| 19167 /** | |
| 19168 * TODO: Remove in JSHint 3 | |
| 19169 */ | |
| 19170 badESOpt = state.inferEsVersion(); | |
| 19171 if (badESOpt) { | |
| 19172 quit("E059", state.tokens.next, "esversion", badESOpt); | |
| 19173 } | |
| 19174 | |
| 19175 if (state.inES5()) { | |
| 19176 combine(predefined, vars.ecmaIdentifiers[5]); | |
| 19177 } | |
| 19178 | |
| 19179 if (state.inES6()) { | |
| 19180 combine(predefined, vars.ecmaIdentifiers[6]); | |
| 19181 } | |
| 19182 | |
| 19183 /** | |
| 19184 * Use `in` to check for the presence of any explicitly-specified value for | |
| 19185 * `globalstrict` because both `true` and `false` should trigger an error. | |
| 19186 */ | |
| 19187 if (state.option.strict === "global" && "globalstrict" in state.option) { | |
| 19188 quit("E059", state.tokens.next, "strict", "globalstrict"); | |
| 19189 } | |
| 19190 | |
| 19191 if (state.option.module) { | |
| 19192 /** | |
| 19193 * TODO: Extend this restriction to *all* ES6-specific options. | |
| 19194 */ | |
| 19195 if (!state.inES6()) { | |
| 19196 warning("W134", state.tokens.next, "module", 6); | |
| 19197 } | |
| 19198 } | |
| 19199 | |
| 19200 if (state.option.couch) { | |
| 19201 combine(predefined, vars.couch); | |
| 19202 } | |
| 19203 | |
| 19204 if (state.option.qunit) { | |
| 19205 combine(predefined, vars.qunit); | |
| 19206 } | |
| 19207 | |
| 19208 if (state.option.rhino) { | |
| 19209 combine(predefined, vars.rhino); | |
| 19210 } | |
| 19211 | |
| 19212 if (state.option.shelljs) { | |
| 19213 combine(predefined, vars.shelljs); | |
| 19214 combine(predefined, vars.node); | |
| 19215 } | |
| 19216 if (state.option.typed) { | |
| 19217 combine(predefined, vars.typed); | |
| 19218 } | |
| 19219 | |
| 19220 if (state.option.phantom) { | |
| 19221 combine(predefined, vars.phantom); | |
| 19222 } | |
| 19223 | |
| 19224 if (state.option.prototypejs) { | |
| 19225 combine(predefined, vars.prototypejs); | |
| 19226 } | |
| 19227 | |
| 19228 if (state.option.node) { | |
| 19229 combine(predefined, vars.node); | |
| 19230 combine(predefined, vars.typed); | |
| 19231 } | |
| 19232 | |
| 19233 if (state.option.devel) { | |
| 19234 combine(predefined, vars.devel); | |
| 19235 } | |
| 19236 | |
| 19237 if (state.option.dojo) { | |
| 19238 combine(predefined, vars.dojo); | |
| 19239 } | |
| 19240 | |
| 19241 if (state.option.browser) { | |
| 19242 combine(predefined, vars.browser); | |
| 19243 combine(predefined, vars.typed); | |
| 19244 } | |
| 19245 | |
| 19246 if (state.option.browserify) { | |
| 19247 combine(predefined, vars.browser); | |
| 19248 combine(predefined, vars.typed); | |
| 19249 combine(predefined, vars.browserify); | |
| 19250 } | |
| 19251 | |
| 19252 if (state.option.nonstandard) { | |
| 19253 combine(predefined, vars.nonstandard); | |
| 19254 } | |
| 19255 | |
| 19256 if (state.option.jasmine) { | |
| 19257 combine(predefined, vars.jasmine); | |
| 19258 } | |
| 19259 | |
| 19260 if (state.option.jquery) { | |
| 19261 combine(predefined, vars.jquery); | |
| 19262 } | |
| 19263 | |
| 19264 if (state.option.mootools) { | |
| 19265 combine(predefined, vars.mootools); | |
| 19266 } | |
| 19267 | |
| 19268 if (state.option.worker) { | |
| 19269 combine(predefined, vars.worker); | |
| 19270 } | |
| 19271 | |
| 19272 if (state.option.wsh) { | |
| 19273 combine(predefined, vars.wsh); | |
| 19274 } | |
| 19275 | |
| 19276 if (state.option.yui) { | |
| 19277 combine(predefined, vars.yui); | |
| 19278 } | |
| 19279 | |
| 19280 if (state.option.mocha) { | |
| 19281 combine(predefined, vars.mocha); | |
| 19282 } | |
| 19283 } | |
| 19284 | |
| 19285 // Produce an error warning. | |
| 19286 function quit(code, token, a, b) { | |
| 19287 var percentage = Math.floor((token.line / state.lines.length) * 100); | |
| 19288 var message = messages.errors[code].desc; | |
| 19289 | |
| 19290 var exception = { | |
| 19291 name: "JSHintError", | |
| 19292 line: token.line, | |
| 19293 character: token.from, | |
| 19294 message: message + " (" + percentage + "% scanned).", | |
| 19295 raw: message, | |
| 19296 code: code, | |
| 19297 a: a, | |
| 19298 b: b | |
| 19299 }; | |
| 19300 | |
| 19301 exception.reason = supplant(message, exception) + " (" + percentage + | |
| 19302 "% scanned)."; | |
| 19303 | |
| 19304 throw exception; | |
| 19305 } | |
| 19306 | |
| 19307 function removeIgnoredMessages() { | |
| 19308 var ignored = state.ignoredLines; | |
| 19309 | |
| 19310 if (_.isEmpty(ignored)) return; | |
| 19311 JSHINT.errors = _.reject(JSHINT.errors, function(err) { return ignored[err.line] }); | |
| 19312 } | |
| 19313 | |
| 19314 function warning(code, t, a, b, c, d) { | |
| 19315 var ch, l, w, msg; | |
| 19316 | |
| 19317 if (/^W\d{3}$/.test(code)) { | |
| 19318 if (state.ignored[code]) | |
| 19319 return; | |
| 19320 | |
| 19321 msg = messages.warnings[code]; | |
| 19322 } else if (/E\d{3}/.test(code)) { | |
| 19323 msg = messages.errors[code]; | |
| 19324 } else if (/I\d{3}/.test(code)) { | |
| 19325 msg = messages.info[code]; | |
| 19326 } | |
| 19327 | |
| 19328 t = t || state.tokens.next || {}; | |
| 19329 if (t.id === "(end)") { // `~ | |
| 19330 t = state.tokens.curr; | |
| 19331 } | |
| 19332 | |
| 19333 l = t.line; | |
| 19334 ch = t.from; | |
| 19335 | |
| 19336 w = { | |
| 19337 id: "(error)", | |
| 19338 raw: msg.desc, | |
| 19339 code: msg.code, | |
| 19340 evidence: state.lines[l - 1] || "", | |
| 19341 line: l, | |
| 19342 character: ch, | |
| 19343 scope: JSHINT.scope, | |
| 19344 a: a, | |
| 19345 b: b, | |
| 19346 c: c, | |
| 19347 d: d | |
| 19348 }; | |
| 19349 | |
| 19350 w.reason = supplant(msg.desc, w); | |
| 19351 JSHINT.errors.push(w); | |
| 19352 | |
| 19353 removeIgnoredMessages(); | |
| 19354 | |
| 19355 if (JSHINT.errors.length >= state.option.maxerr) | |
| 19356 quit("E043", t); | |
| 19357 | |
| 19358 return w; | |
| 19359 } | |
| 19360 | |
| 19361 function warningAt(m, l, ch, a, b, c, d) { | |
| 19362 return warning(m, { | |
| 19363 line: l, | |
| 19364 from: ch | |
| 19365 }, a, b, c, d); | |
| 19366 } | |
| 19367 | |
| 19368 function error(m, t, a, b, c, d) { | |
| 19369 warning(m, t, a, b, c, d); | |
| 19370 } | |
| 19371 | |
| 19372 function errorAt(m, l, ch, a, b, c, d) { | |
| 19373 return error(m, { | |
| 19374 line: l, | |
| 19375 from: ch | |
| 19376 }, a, b, c, d); | |
| 19377 } | |
| 19378 | |
| 19379 // Tracking of "internal" scripts, like eval containing a static string | |
| 19380 function addEvalCode(elem, token) { | |
| 19381 JSHINT.internals.push({ | |
| 19382 id: "(internal)", | |
| 19383 elem: elem, | |
| 19384 token: token, | |
| 19385 code: token.value.replace(/([^\\])(\\*)\2\\n/g, "$1\n") | |
| 19386 }); | |
| 19387 } | |
| 19388 | |
| 19389 /** | |
| 19390 * Process an inline linting directive | |
| 19391 * | |
| 19392 * @param {Token} directiveToken - the directive-bearing comment token | |
| 19393 * @param {Token} previous - the token that preceeds the directive | |
| 19394 */ | |
| 19395 function lintingDirective(directiveToken, previous) { | |
| 19396 var body = directiveToken.body.split(",") | |
| 19397 .map(function(s) { return s.trim(); }); | |
| 19398 var predef = {}; | |
| 19399 | |
| 19400 if (directiveToken.type === "falls through") { | |
| 19401 previous.caseFallsThrough = true; | |
| 19402 return; | |
| 19403 } | |
| 19404 | |
| 19405 if (directiveToken.type === "globals") { | |
| 19406 body.forEach(function(g, idx) { | |
| 19407 g = g.split(":"); | |
| 19408 var key = (g[0] || "").trim(); | |
| 19409 var val = (g[1] || "").trim(); | |
| 19410 | |
| 19411 if (key === "-" || !key.length) { | |
| 19412 // Ignore trailing comma | |
| 19413 if (idx > 0 && idx === body.length - 1) { | |
| 19414 return; | |
| 19415 } | |
| 19416 error("E002", directiveToken); | |
| 19417 return; | |
| 19418 } | |
| 19419 | |
| 19420 if (key.charAt(0) === "-") { | |
| 19421 key = key.slice(1); | |
| 19422 val = false; | |
| 19423 | |
| 19424 JSHINT.blacklist[key] = key; | |
| 19425 delete predefined[key]; | |
| 19426 } else { | |
| 19427 predef[key] = (val === "true"); | |
| 19428 } | |
| 19429 }); | |
| 19430 | |
| 19431 combine(predefined, predef); | |
| 19432 | |
| 19433 for (var key in predef) { | |
| 19434 if (_.has(predef, key)) { | |
| 19435 declared[key] = directiveToken; | |
| 19436 } | |
| 19437 } | |
| 19438 } | |
| 19439 | |
| 19440 if (directiveToken.type === "exported") { | |
| 19441 body.forEach(function(e, idx) { | |
| 19442 if (!e.length) { | |
| 19443 // Ignore trailing comma | |
| 19444 if (idx > 0 && idx === body.length - 1) { | |
| 19445 return; | |
| 19446 } | |
| 19447 error("E002", directiveToken); | |
| 19448 return; | |
| 19449 } | |
| 19450 | |
| 19451 state.funct["(scope)"].addExported(e); | |
| 19452 }); | |
| 19453 } | |
| 19454 | |
| 19455 if (directiveToken.type === "members") { | |
| 19456 membersOnly = membersOnly || {}; | |
| 19457 | |
| 19458 body.forEach(function(m) { | |
| 19459 var ch1 = m.charAt(0); | |
| 19460 var ch2 = m.charAt(m.length - 1); | |
| 19461 | |
| 19462 if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) { | |
| 19463 m = m | |
| 19464 .substr(1, m.length - 2) | |
| 19465 .replace("\\\"", "\""); | |
| 19466 } | |
| 19467 | |
| 19468 membersOnly[m] = false; | |
| 19469 }); | |
| 19470 } | |
| 19471 | |
| 19472 var numvals = [ | |
| 19473 "maxstatements", | |
| 19474 "maxparams", | |
| 19475 "maxdepth", | |
| 19476 "maxcomplexity", | |
| 19477 "maxerr", | |
| 19478 "maxlen", | |
| 19479 "indent" | |
| 19480 ]; | |
| 19481 | |
| 19482 if (directiveToken.type === "jshint" || directiveToken.type === "jslint") { | |
| 19483 body.forEach(function(g) { | |
| 19484 g = g.split(":"); | |
| 19485 var key = (g[0] || "").trim(); | |
| 19486 var val = (g[1] || "").trim(); | |
| 19487 | |
| 19488 if (!checkOption(key, directiveToken)) { | |
| 19489 return; | |
| 19490 } | |
| 19491 | |
| 19492 if (numvals.indexOf(key) >= 0) { | |
| 19493 // GH988 - numeric options can be disabled by setting them to `false` | |
| 19494 if (val !== "false") { | |
| 19495 val = +val; | |
| 19496 | |
| 19497 if (typeof val !== "number" || !isFinite(val) || val <= 0 || Math.floor(val) !== val) { | |
| 19498 error("E032", directiveToken, g[1].trim()); | |
| 19499 return; | |
| 19500 } | |
| 19501 | |
| 19502 state.option[key] = val; | |
| 19503 } else { | |
| 19504 state.option[key] = key === "indent" ? 4 : false; | |
| 19505 } | |
| 19506 | |
| 19507 return; | |
| 19508 } | |
| 19509 | |
| 19510 if (key === "validthis") { | |
| 19511 // `validthis` is valid only within a function scope. | |
| 19512 | |
| 19513 if (state.funct["(global)"]) | |
| 19514 return void error("E009"); | |
| 19515 | |
| 19516 if (val !== "true" && val !== "false") | |
| 19517 return void error("E002", directiveToken); | |
| 19518 | |
| 19519 state.option.validthis = (val === "true"); | |
| 19520 return; | |
| 19521 } | |
| 19522 | |
| 19523 if (key === "quotmark") { | |
| 19524 switch (val) { | |
| 19525 case "true": | |
| 19526 case "false": | |
| 19527 state.option.quotmark = (val === "true"); | |
| 19528 break; | |
| 19529 case "double": | |
| 19530 case "single": | |
| 19531 state.option.quotmark = val; | |
| 19532 break; | |
| 19533 default: | |
| 19534 error("E002", directiveToken); | |
| 19535 } | |
| 19536 return; | |
| 19537 } | |
| 19538 | |
| 19539 if (key === "shadow") { | |
| 19540 switch (val) { | |
| 19541 case "true": | |
| 19542 state.option.shadow = true; | |
| 19543 break; | |
| 19544 case "outer": | |
| 19545 state.option.shadow = "outer"; | |
| 19546 break; | |
| 19547 case "false": | |
| 19548 case "inner": | |
| 19549 state.option.shadow = "inner"; | |
| 19550 break; | |
| 19551 default: | |
| 19552 error("E002", directiveToken); | |
| 19553 } | |
| 19554 return; | |
| 19555 } | |
| 19556 | |
| 19557 if (key === "unused") { | |
| 19558 switch (val) { | |
| 19559 case "true": | |
| 19560 state.option.unused = true; | |
| 19561 break; | |
| 19562 case "false": | |
| 19563 state.option.unused = false; | |
| 19564 break; | |
| 19565 case "vars": | |
| 19566 case "strict": | |
| 19567 state.option.unused = val; | |
| 19568 break; | |
| 19569 default: | |
| 19570 error("E002", directiveToken); | |
| 19571 } | |
| 19572 return; | |
| 19573 } | |
| 19574 | |
| 19575 if (key === "latedef") { | |
| 19576 switch (val) { | |
| 19577 case "true": | |
| 19578 state.option.latedef = true; | |
| 19579 break; | |
| 19580 case "false": | |
| 19581 state.option.latedef = false; | |
| 19582 break; | |
| 19583 case "nofunc": | |
| 19584 state.option.latedef = "nofunc"; | |
| 19585 break; | |
| 19586 default: | |
| 19587 error("E002", directiveToken); | |
| 19588 } | |
| 19589 return; | |
| 19590 } | |
| 19591 | |
| 19592 if (key === "ignore") { | |
| 19593 switch (val) { | |
| 19594 case "line": | |
| 19595 state.ignoredLines[directiveToken.line] = true; | |
| 19596 removeIgnoredMessages(); | |
| 19597 break; | |
| 19598 default: | |
| 19599 error("E002", directiveToken); | |
| 19600 } | |
| 19601 return; | |
| 19602 } | |
| 19603 | |
| 19604 if (key === "strict") { | |
| 19605 switch (val) { | |
| 19606 case "true": | |
| 19607 state.option.strict = true; | |
| 19608 break; | |
| 19609 case "false": | |
| 19610 state.option.strict = false; | |
| 19611 break; | |
| 19612 case "global": | |
| 19613 case "implied": | |
| 19614 state.option.strict = val; | |
| 19615 break; | |
| 19616 default: | |
| 19617 error("E002", directiveToken); | |
| 19618 } | |
| 19619 return; | |
| 19620 } | |
| 19621 | |
| 19622 if (key === "module") { | |
| 19623 /** | |
| 19624 * TODO: Extend this restriction to *all* "environmental" options. | |
| 19625 */ | |
| 19626 if (!hasParsedCode(state.funct)) { | |
| 19627 error("E055", directiveToken, "module"); | |
| 19628 } | |
| 19629 } | |
| 19630 | |
| 19631 if (key === "esversion") { | |
| 19632 switch (val) { | |
| 19633 case "3": | |
| 19634 case "5": | |
| 19635 case "6": | |
| 19636 case "2015": | |
| 19637 state.option.moz = false; | |
| 19638 state.option.esversion = +val; | |
| 19639 break; | |
| 19640 default: | |
| 19641 error("E002", directiveToken); | |
| 19642 } | |
| 19643 if (!hasParsedCode(state.funct)) { | |
| 19644 error("E055", directiveToken, "esversion"); | |
| 19645 } | |
| 19646 return; | |
| 19647 } | |
| 19648 | |
| 19649 var match = /^([+-])(W\d{3})$/g.exec(key); | |
| 19650 if (match) { | |
| 19651 // ignore for -W..., unignore for +W... | |
| 19652 state.ignored[match[2]] = (match[1] === "-"); | |
| 19653 return; | |
| 19654 } | |
| 19655 | |
| 19656 var tn; | |
| 19657 if (val === "true" || val === "false") { | |
| 19658 if (directiveToken.type === "jslint") { | |
| 19659 tn = options.renamed[key] || key; | |
| 19660 state.option[tn] = (val === "true"); | |
| 19661 | |
| 19662 if (options.inverted[tn] !== undefined) { | |
| 19663 state.option[tn] = !state.option[tn]; | |
| 19664 } | |
| 19665 } else { | |
| 19666 state.option[key] = (val === "true"); | |
| 19667 } | |
| 19668 | |
| 19669 return; | |
| 19670 } | |
| 19671 | |
| 19672 error("E002", directiveToken); | |
| 19673 }); | |
| 19674 | |
| 19675 applyOptions(); | |
| 19676 } | |
| 19677 } | |
| 19678 | |
| 19679 /** | |
| 19680 * Return a token beyond the token available in `state.tokens.next`. If no | |
| 19681 * such token exists, return the "(end)" token. This function is used to | |
| 19682 * determine parsing strategies in cases where the value of the next token | |
| 19683 * does not provide sufficient information, as is the case with `for` loops, | |
| 19684 * e.g.: | |
| 19685 * | |
| 19686 * for ( var i in ... | |
| 19687 * | |
| 19688 * versus: | |
| 19689 * | |
| 19690 * for ( var i = ... | |
| 19691 * | |
| 19692 * @param {number} [p] - offset of desired token; defaults to 0 | |
| 19693 * | |
| 19694 * @returns {token} | |
| 19695 */ | |
| 19696 function peek(p) { | |
| 19697 var i = p || 0, j = lookahead.length, t; | |
| 19698 | |
| 19699 if (i < j) { | |
| 19700 return lookahead[i]; | |
| 19701 } | |
| 19702 | |
| 19703 while (j <= i) { | |
| 19704 t = lex.token(); | |
| 19705 | |
| 19706 // When the lexer is exhausted, this function should produce the "(end)" | |
| 19707 // token, even in cases where the requested token is beyond the end of | |
| 19708 // the input stream. | |
| 19709 if (!t) { | |
| 19710 // If the lookahead buffer is empty, the expected "(end)" token was | |
| 19711 // already emitted by the most recent invocation of `advance` and is | |
| 19712 // available as the next token. | |
| 19713 if (!lookahead.length) { | |
| 19714 return state.tokens.next; | |
| 19715 } | |
| 19716 | |
| 19717 return lookahead[j - 1]; | |
| 19718 } | |
| 19719 | |
| 19720 lookahead[j] = t; | |
| 19721 j += 1; | |
| 19722 } | |
| 19723 | |
| 19724 return t; | |
| 19725 } | |
| 19726 | |
| 19727 function peekIgnoreEOL() { | |
| 19728 var i = 0; | |
| 19729 var t; | |
| 19730 do { | |
| 19731 t = peek(i++); | |
| 19732 } while (t.id === "(endline)"); | |
| 19733 return t; | |
| 19734 } | |
| 19735 | |
| 19736 // Produce the next token. It looks for programming errors. | |
| 19737 | |
| 19738 function advance(id, t) { | |
| 19739 | |
| 19740 switch (state.tokens.curr.id) { | |
| 19741 case "(number)": | |
| 19742 if (state.tokens.next.id === ".") { | |
| 19743 warning("W005", state.tokens.curr); | |
| 19744 } | |
| 19745 break; | |
| 19746 case "-": | |
| 19747 if (state.tokens.next.id === "-" || state.tokens.next.id === "--") { | |
| 19748 warning("W006"); | |
| 19749 } | |
| 19750 break; | |
| 19751 case "+": | |
| 19752 if (state.tokens.next.id === "+" || state.tokens.next.id === "++") { | |
| 19753 warning("W007"); | |
| 19754 } | |
| 19755 break; | |
| 19756 } | |
| 19757 | |
| 19758 if (id && state.tokens.next.id !== id) { | |
| 19759 if (t) { | |
| 19760 if (state.tokens.next.id === "(end)") { | |
| 19761 error("E019", t, t.id); | |
| 19762 } else { | |
| 19763 error("E020", state.tokens.next, id, t.id, t.line, state.tokens.next.value); | |
| 19764 } | |
| 19765 } else if (state.tokens.next.type !== "(identifier)" || state.tokens.next.value !== id) { | |
| 19766 warning("W116", state.tokens.next, id, state.tokens.next.value); | |
| 19767 } | |
| 19768 } | |
| 19769 | |
| 19770 state.tokens.prev = state.tokens.curr; | |
| 19771 state.tokens.curr = state.tokens.next; | |
| 19772 for (;;) { | |
| 19773 state.tokens.next = lookahead.shift() || lex.token(); | |
| 19774 | |
| 19775 if (!state.tokens.next) { // No more tokens left, give up | |
| 19776 quit("E041", state.tokens.curr); | |
| 19777 } | |
| 19778 | |
| 19779 if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") { | |
| 19780 return; | |
| 19781 } | |
| 19782 | |
| 19783 if (state.tokens.next.check) { | |
| 19784 state.tokens.next.check(); | |
| 19785 } | |
| 19786 | |
| 19787 if (state.tokens.next.isSpecial) { | |
| 19788 lintingDirective(state.tokens.next, state.tokens.curr); | |
| 19789 } else { | |
| 19790 if (state.tokens.next.id !== "(endline)") { | |
| 19791 break; | |
| 19792 } | |
| 19793 } | |
| 19794 } | |
| 19795 } | |
| 19796 | |
| 19797 /** | |
| 19798 * Determine whether a given token is an operator. | |
| 19799 * | |
| 19800 * @param {token} token | |
| 19801 * | |
| 19802 * @returns {boolean} | |
| 19803 */ | |
| 19804 function isOperator(token) { | |
| 19805 return token.first || token.right || token.left || token.id === "yield"; | |
| 19806 } | |
| 19807 | |
| 19808 function isEndOfExpr(curr, next) { | |
| 19809 if (arguments.length === 0) { | |
| 19810 curr = state.tokens.curr; | |
| 19811 next = state.tokens.next; | |
| 19812 } | |
| 19813 | |
| 19814 if (next.id === ";" || next.id === "}" || next.id === ":") { | |
| 19815 return true; | |
| 19816 } | |
| 19817 if (next.infix === curr.infix || curr.ltBoundary === "after" || | |
| 19818 next.ltBoundary === "before") { | |
| 19819 return curr.line !== startLine(next); | |
| 19820 } | |
| 19821 return false; | |
| 19822 } | |
| 19823 | |
| 19824 // This is the heart of JSHINT, the Pratt parser. In addition to parsing, it | |
| 19825 // is looking for ad hoc lint patterns. We add .fud to Pratt's model, which is | |
| 19826 // like .nud except that it is only used on the first token of a statement. | |
| 19827 // Having .fud makes it much easier to define statement-oriented languages like | |
| 19828 // JavaScript. I retained Pratt's nomenclature. | |
| 19829 | |
| 19830 // .nud Null denotation | |
| 19831 // .fud First null denotation | |
| 19832 // .led Left denotation | |
| 19833 // lbp Left binding power | |
| 19834 // rbp Right binding power | |
| 19835 | |
| 19836 // They are elements of the parsing method called Top Down Operator Precedence. | |
| 19837 | |
| 19838 function expression(rbp, initial) { | |
| 19839 var left, isArray = false, isObject = false, isLetExpr = false; | |
| 19840 | |
| 19841 state.nameStack.push(); | |
| 19842 | |
| 19843 // if current expression is a let expression | |
| 19844 if (!initial && state.tokens.next.value === "let" && peek(0).value === "(") { | |
| 19845 if (!state.inMoz()) { | |
| 19846 warning("W118", state.tokens.next, "let expressions"); | |
| 19847 } | |
| 19848 isLetExpr = true; | |
| 19849 // create a new block scope we use only for the current expression | |
| 19850 state.funct["(scope)"].stack(); | |
| 19851 advance("let"); | |
| 19852 advance("("); | |
| 19853 state.tokens.prev.fud(); | |
| 19854 advance(")"); | |
| 19855 } | |
| 19856 | |
| 19857 if (state.tokens.next.id === "(end)") | |
| 19858 error("E006", state.tokens.curr); | |
| 19859 | |
| 19860 var isDangerous = | |
| 19861 state.option.asi && | |
| 19862 state.tokens.prev.line !== startLine(state.tokens.curr) && | |
| 19863 _.contains(["]", ")"], state.tokens.prev.id) && | |
| 19864 _.contains(["[", "("], state.tokens.curr.id); | |
| 19865 | |
| 19866 if (isDangerous) | |
| 19867 warning("W014", state.tokens.curr, state.tokens.curr.id); | |
| 19868 | |
| 19869 advance(); | |
| 19870 | |
| 19871 if (initial) { | |
| 19872 state.funct["(verb)"] = state.tokens.curr.value; | |
| 19873 state.tokens.curr.beginsStmt = true; | |
| 19874 } | |
| 19875 | |
| 19876 if (initial === true && state.tokens.curr.fud) { | |
| 19877 left = state.tokens.curr.fud(); | |
| 19878 } else { | |
| 19879 if (state.tokens.curr.nud) { | |
| 19880 left = state.tokens.curr.nud(rbp); | |
| 19881 } else { | |
| 19882 error("E030", state.tokens.curr, state.tokens.curr.id); | |
| 19883 } | |
| 19884 | |
| 19885 while (rbp < state.tokens.next.lbp && !isEndOfExpr()) { | |
| 19886 isArray = state.tokens.curr.value === "Array"; | |
| 19887 isObject = state.tokens.curr.value === "Object"; | |
| 19888 | |
| 19889 // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object() | |
| 19890 // Line breaks in IfStatement heads exist to satisfy the checkJSHint | |
| 19891 // "Line too long." error. | |
| 19892 if (left && (left.value || (left.first && left.first.value))) { | |
| 19893 // If the left.value is not "new", or the left.first.value is a "." | |
| 19894 // then safely assume that this is not "new Array()" and possibly | |
| 19895 // not "new Object()"... | |
| 19896 if (left.value !== "new" || | |
| 19897 (left.first && left.first.value && left.first.value === ".")) { | |
| 19898 isArray = false; | |
| 19899 // ...In the case of Object, if the left.value and state.tokens.curr.value | |
| 19900 // are not equal, then safely assume that this not "new Object()" | |
| 19901 if (left.value !== state.tokens.curr.value) { | |
| 19902 isObject = false; | |
| 19903 } | |
| 19904 } | |
| 19905 } | |
| 19906 | |
| 19907 advance(); | |
| 19908 | |
| 19909 if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { | |
| 19910 warning("W009", state.tokens.curr); | |
| 19911 } | |
| 19912 | |
| 19913 if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { | |
| 19914 warning("W010", state.tokens.curr); | |
| 19915 } | |
| 19916 | |
| 19917 if (left && state.tokens.curr.led) { | |
| 19918 left = state.tokens.curr.led(left); | |
| 19919 } else { | |
| 19920 error("E033", state.tokens.curr, state.tokens.curr.id); | |
| 19921 } | |
| 19922 } | |
| 19923 } | |
| 19924 if (isLetExpr) { | |
| 19925 state.funct["(scope)"].unstack(); | |
| 19926 } | |
| 19927 | |
| 19928 state.nameStack.pop(); | |
| 19929 | |
| 19930 return left; | |
| 19931 } | |
| 19932 | |
| 19933 | |
| 19934 // Functions for conformance of style. | |
| 19935 | |
| 19936 function startLine(token) { | |
| 19937 return token.startLine || token.line; | |
| 19938 } | |
| 19939 | |
| 19940 function nobreaknonadjacent(left, right) { | |
| 19941 left = left || state.tokens.curr; | |
| 19942 right = right || state.tokens.next; | |
| 19943 if (!state.option.laxbreak && left.line !== startLine(right)) { | |
| 19944 warning("W014", right, right.value); | |
| 19945 } | |
| 19946 } | |
| 19947 | |
| 19948 function nolinebreak(t) { | |
| 19949 t = t || state.tokens.curr; | |
| 19950 if (t.line !== startLine(state.tokens.next)) { | |
| 19951 warning("E022", t, t.value); | |
| 19952 } | |
| 19953 } | |
| 19954 | |
| 19955 function nobreakcomma(left, right) { | |
| 19956 if (left.line !== startLine(right)) { | |
| 19957 if (!state.option.laxcomma) { | |
| 19958 if (parseComma.first) { | |
| 19959 warning("I001"); | |
| 19960 parseComma.first = false; | |
| 19961 } | |
| 19962 warning("W014", left, right.value); | |
| 19963 } | |
| 19964 } | |
| 19965 } | |
| 19966 | |
| 19967 function parseComma(opts) { | |
| 19968 opts = opts || {}; | |
| 19969 | |
| 19970 if (!opts.peek) { | |
| 19971 nobreakcomma(state.tokens.curr, state.tokens.next); | |
| 19972 advance(","); | |
| 19973 } else { | |
| 19974 nobreakcomma(state.tokens.prev, state.tokens.curr); | |
| 19975 } | |
| 19976 | |
| 19977 if (state.tokens.next.identifier && !(opts.property && state.inES5())) { | |
| 19978 // Keywords that cannot follow a comma operator. | |
| 19979 switch (state.tokens.next.value) { | |
| 19980 case "break": | |
| 19981 case "case": | |
| 19982 case "catch": | |
| 19983 case "continue": | |
| 19984 case "default": | |
| 19985 case "do": | |
| 19986 case "else": | |
| 19987 case "finally": | |
| 19988 case "for": | |
| 19989 case "if": | |
| 19990 case "in": | |
| 19991 case "instanceof": | |
| 19992 case "return": | |
| 19993 case "switch": | |
| 19994 case "throw": | |
| 19995 case "try": | |
| 19996 case "var": | |
| 19997 case "let": | |
| 19998 case "while": | |
| 19999 case "with": | |
| 20000 error("E024", state.tokens.next, state.tokens.next.value); | |
| 20001 return false; | |
| 20002 } | |
| 20003 } | |
| 20004 | |
| 20005 if (state.tokens.next.type === "(punctuator)") { | |
| 20006 switch (state.tokens.next.value) { | |
| 20007 case "}": | |
| 20008 case "]": | |
| 20009 case ",": | |
| 20010 if (opts.allowTrailing) { | |
| 20011 return true; | |
| 20012 } | |
| 20013 | |
| 20014 /* falls through */ | |
| 20015 case ")": | |
| 20016 error("E024", state.tokens.next, state.tokens.next.value); | |
| 20017 return false; | |
| 20018 } | |
| 20019 } | |
| 20020 return true; | |
| 20021 } | |
| 20022 | |
| 20023 // Functional constructors for making the symbols that will be inherited by | |
| 20024 // tokens. | |
| 20025 | |
| 20026 function symbol(s, p) { | |
| 20027 var x = state.syntax[s]; | |
| 20028 if (!x || typeof x !== "object") { | |
| 20029 state.syntax[s] = x = { | |
| 20030 id: s, | |
| 20031 lbp: p, | |
| 20032 value: s | |
| 20033 }; | |
| 20034 } | |
| 20035 return x; | |
| 20036 } | |
| 20037 | |
| 20038 function delim(s) { | |
| 20039 var x = symbol(s, 0); | |
| 20040 x.delim = true; | |
| 20041 return x; | |
| 20042 } | |
| 20043 | |
| 20044 function stmt(s, f) { | |
| 20045 var x = delim(s); | |
| 20046 x.identifier = x.reserved = true; | |
| 20047 x.fud = f; | |
| 20048 return x; | |
| 20049 } | |
| 20050 | |
| 20051 function blockstmt(s, f) { | |
| 20052 var x = stmt(s, f); | |
| 20053 x.block = true; | |
| 20054 return x; | |
| 20055 } | |
| 20056 | |
| 20057 function reserveName(x) { | |
| 20058 var c = x.id.charAt(0); | |
| 20059 if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) { | |
| 20060 x.identifier = x.reserved = true; | |
| 20061 } | |
| 20062 return x; | |
| 20063 } | |
| 20064 | |
| 20065 function prefix(s, f) { | |
| 20066 var x = symbol(s, 150); | |
| 20067 reserveName(x); | |
| 20068 | |
| 20069 x.nud = (typeof f === "function") ? f : function() { | |
| 20070 this.arity = "unary"; | |
| 20071 this.right = expression(150); | |
| 20072 | |
| 20073 if (this.id === "++" || this.id === "--") { | |
| 20074 if (state.option.plusplus) { | |
| 20075 warning("W016", this, this.id); | |
| 20076 } else if (this.right && (!this.right.identifier || isReserved(this.right)) && | |
| 20077 this.right.id !== "." && this.right.id !== "[") { | |
| 20078 warning("W017", this); | |
| 20079 } | |
| 20080 | |
| 20081 if (this.right && this.right.isMetaProperty) { | |
| 20082 error("E031", this); | |
| 20083 // detect increment/decrement of a const | |
| 20084 // in the case of a.b, right will be the "." punctuator | |
| 20085 } else if (this.right && this.right.identifier) { | |
| 20086 state.funct["(scope)"].block.modify(this.right.value, this); | |
| 20087 } | |
| 20088 } | |
| 20089 | |
| 20090 return this; | |
| 20091 }; | |
| 20092 | |
| 20093 return x; | |
| 20094 } | |
| 20095 | |
| 20096 function type(s, f) { | |
| 20097 var x = delim(s); | |
| 20098 x.type = s; | |
| 20099 x.nud = f; | |
| 20100 return x; | |
| 20101 } | |
| 20102 | |
| 20103 function reserve(name, func) { | |
| 20104 var x = type(name, func); | |
| 20105 x.identifier = true; | |
| 20106 x.reserved = true; | |
| 20107 return x; | |
| 20108 } | |
| 20109 | |
| 20110 function FutureReservedWord(name, meta) { | |
| 20111 var x = type(name, (meta && meta.nud) || function() { | |
| 20112 return this; | |
| 20113 }); | |
| 20114 | |
| 20115 meta = meta || {}; | |
| 20116 meta.isFutureReservedWord = true; | |
| 20117 | |
| 20118 x.value = name; | |
| 20119 x.identifier = true; | |
| 20120 x.reserved = true; | |
| 20121 x.meta = meta; | |
| 20122 | |
| 20123 return x; | |
| 20124 } | |
| 20125 | |
| 20126 function reservevar(s, v) { | |
| 20127 return reserve(s, function() { | |
| 20128 if (typeof v === "function") { | |
| 20129 v(this); | |
| 20130 } | |
| 20131 return this; | |
| 20132 }); | |
| 20133 } | |
| 20134 | |
| 20135 function infix(s, f, p, w) { | |
| 20136 var x = symbol(s, p); | |
| 20137 reserveName(x); | |
| 20138 x.infix = true; | |
| 20139 x.led = function(left) { | |
| 20140 if (!w) { | |
| 20141 nobreaknonadjacent(state.tokens.prev, state.tokens.curr); | |
| 20142 } | |
| 20143 if ((s === "in" || s === "instanceof") && left.id === "!") { | |
| 20144 warning("W018", left, "!"); | |
| 20145 } | |
| 20146 if (typeof f === "function") { | |
| 20147 return f(left, this); | |
| 20148 } else { | |
| 20149 this.left = left; | |
| 20150 this.right = expression(p); | |
| 20151 return this; | |
| 20152 } | |
| 20153 }; | |
| 20154 return x; | |
| 20155 } | |
| 20156 | |
| 20157 function application(s) { | |
| 20158 var x = symbol(s, 42); | |
| 20159 | |
| 20160 x.infix = true; | |
| 20161 x.led = function(left) { | |
| 20162 nobreaknonadjacent(state.tokens.prev, state.tokens.curr); | |
| 20163 | |
| 20164 this.left = left; | |
| 20165 this.right = doFunction({ type: "arrow", loneArg: left }); | |
| 20166 return this; | |
| 20167 }; | |
| 20168 return x; | |
| 20169 } | |
| 20170 | |
| 20171 function relation(s, f) { | |
| 20172 var x = symbol(s, 100); | |
| 20173 | |
| 20174 x.infix = true; | |
| 20175 x.led = function(left) { | |
| 20176 nobreaknonadjacent(state.tokens.prev, state.tokens.curr); | |
| 20177 this.left = left; | |
| 20178 var right = this.right = expression(100); | |
| 20179 | |
| 20180 if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) { | |
| 20181 warning("W019", this); | |
| 20182 } else if (f) { | |
| 20183 f.apply(this, [left, right]); | |
| 20184 } | |
| 20185 | |
| 20186 if (!left || !right) { | |
| 20187 quit("E041", state.tokens.curr); | |
| 20188 } | |
| 20189 | |
| 20190 if (left.id === "!") { | |
| 20191 warning("W018", left, "!"); | |
| 20192 } | |
| 20193 | |
| 20194 if (right.id === "!") { | |
| 20195 warning("W018", right, "!"); | |
| 20196 } | |
| 20197 | |
| 20198 return this; | |
| 20199 }; | |
| 20200 return x; | |
| 20201 } | |
| 20202 | |
| 20203 var typeofValues = {}; | |
| 20204 typeofValues.legacy = [ | |
| 20205 // E4X extended the `typeof` operator to return "xml" for the XML and | |
| 20206 // XMLList types it introduced. | |
| 20207 // Ref: 11.3.2 The typeof Operator | |
| 20208 // http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-357.pdf | |
| 20209 "xml", | |
| 20210 // IE<9 reports "unknown" when the `typeof` operator is applied to an | |
| 20211 // object existing across a COM+ bridge. In lieu of official documentation | |
| 20212 // (which does not exist), see: | |
| 20213 // http://robertnyman.com/2005/12/21/what-is-typeof-unknown/ | |
| 20214 "unknown" | |
| 20215 ]; | |
| 20216 typeofValues.es3 = [ | |
| 20217 "undefined", "boolean", "number", "string", "function", "object", | |
| 20218 ]; | |
| 20219 typeofValues.es3 = typeofValues.es3.concat(typeofValues.legacy); | |
| 20220 typeofValues.es6 = typeofValues.es3.concat("symbol"); | |
| 20221 | |
| 20222 // Checks whether the 'typeof' operator is used with the correct | |
| 20223 // value. For docs on 'typeof' see: | |
| 20224 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof | |
| 20225 function isTypoTypeof(left, right, state) { | |
| 20226 var values; | |
| 20227 | |
| 20228 if (state.option.notypeof) | |
| 20229 return false; | |
| 20230 | |
| 20231 if (!left || !right) | |
| 20232 return false; | |
| 20233 | |
| 20234 values = state.inES6() ? typeofValues.es6 : typeofValues.es3; | |
| 20235 | |
| 20236 if (right.type === "(identifier)" && right.value === "typeof" && left.type === "(string)") | |
| 20237 return !_.contains(values, left.value); | |
| 20238 | |
| 20239 return false; | |
| 20240 } | |
| 20241 | |
| 20242 function isGlobalEval(left, state) { | |
| 20243 var isGlobal = false; | |
| 20244 | |
| 20245 // permit methods to refer to an "eval" key in their own context | |
| 20246 if (left.type === "this" && state.funct["(context)"] === null) { | |
| 20247 isGlobal = true; | |
| 20248 } | |
| 20249 // permit use of "eval" members of objects | |
| 20250 else if (left.type === "(identifier)") { | |
| 20251 if (state.option.node && left.value === "global") { | |
| 20252 isGlobal = true; | |
| 20253 } | |
| 20254 | |
| 20255 else if (state.option.browser && (left.value === "window" || left.value === "document")) { | |
| 20256 isGlobal = true; | |
| 20257 } | |
| 20258 } | |
| 20259 | |
| 20260 return isGlobal; | |
| 20261 } | |
| 20262 | |
| 20263 function findNativePrototype(left) { | |
| 20264 var natives = [ | |
| 20265 "Array", "ArrayBuffer", "Boolean", "Collator", "DataView", "Date", | |
| 20266 "DateTimeFormat", "Error", "EvalError", "Float32Array", "Float64Array", | |
| 20267 "Function", "Infinity", "Intl", "Int16Array", "Int32Array", "Int8Array", | |
| 20268 "Iterator", "Number", "NumberFormat", "Object", "RangeError", | |
| 20269 "ReferenceError", "RegExp", "StopIteration", "String", "SyntaxError", | |
| 20270 "TypeError", "Uint16Array", "Uint32Array", "Uint8Array", "Uint8ClampedArray", | |
| 20271 "URIError" | |
| 20272 ]; | |
| 20273 | |
| 20274 function walkPrototype(obj) { | |
| 20275 if (typeof obj !== "object") return; | |
| 20276 return obj.right === "prototype" ? obj : walkPrototype(obj.left); | |
| 20277 } | |
| 20278 | |
| 20279 function walkNative(obj) { | |
| 20280 while (!obj.identifier && typeof obj.left === "object") | |
| 20281 obj = obj.left; | |
| 20282 | |
| 20283 if (obj.identifier && natives.indexOf(obj.value) >= 0 && | |
| 20284 state.funct["(scope)"].isPredefined(obj.value)) { | |
| 20285 return obj.value; | |
| 20286 } | |
| 20287 } | |
| 20288 | |
| 20289 var prototype = walkPrototype(left); | |
| 20290 if (prototype) return walkNative(prototype); | |
| 20291 } | |
| 20292 | |
| 20293 /** | |
| 20294 * Checks the left hand side of an assignment for issues, returns if ok | |
| 20295 * @param {token} left - the left hand side of the assignment | |
| 20296 * @param {token=} assignToken - the token for the assignment, used for reporting | |
| 20297 * @param {object=} options - optional object | |
| 20298 * @param {boolean} options.allowDestructuring - whether to allow destructuting binding | |
| 20299 * @returns {boolean} Whether the left hand side is OK | |
| 20300 */ | |
| 20301 function checkLeftSideAssign(left, assignToken, options) { | |
| 20302 | |
| 20303 var allowDestructuring = options && options.allowDestructuring; | |
| 20304 | |
| 20305 assignToken = assignToken || left; | |
| 20306 | |
| 20307 if (state.option.freeze) { | |
| 20308 var nativeObject = findNativePrototype(left); | |
| 20309 if (nativeObject) | |
| 20310 warning("W121", left, nativeObject); | |
| 20311 } | |
| 20312 if (checkPunctuator(left, "...")) { | |
| 20313 left = left.right; | |
| 20314 } | |
| 20315 | |
| 20316 if (left.identifier && !left.isMetaProperty) { | |
| 20317 // reassign also calls modify | |
| 20318 // but we are specific in order to catch function re-assignment | |
| 20319 // and globals re-assignment | |
| 20320 state.funct["(scope)"].block.reassign(left.value, left); | |
| 20321 } | |
| 20322 | |
| 20323 if (left.id === ".") { | |
| 20324 if (!left.left || left.left.value === "arguments" && !state.isStrict()) { | |
| 20325 warning("E031", assignToken); | |
| 20326 } | |
| 20327 | |
| 20328 state.nameStack.set(state.tokens.prev); | |
| 20329 return true; | |
| 20330 } else if (left.id === "{" || left.id === "[") { | |
| 20331 if (!allowDestructuring || !left.destructAssign) { | |
| 20332 if (left.id === "{" || !left.left) { | |
| 20333 warning("E031", assignToken); | |
| 20334 } else if (left.left.value === "arguments" && !state.isStrict()) { | |
| 20335 warning("E031", assignToken); | |
| 20336 } | |
| 20337 } | |
| 20338 | |
| 20339 if (left.id === "[") { | |
| 20340 state.nameStack.set(left.right); | |
| 20341 } | |
| 20342 | |
| 20343 return true; | |
| 20344 } else if (left.identifier && !isReserved(left) && !left.isMetaProperty) { | |
| 20345 if (state.funct["(scope)"].labeltype(left.value) === "exception") { | |
| 20346 warning("W022", left); | |
| 20347 } | |
| 20348 state.nameStack.set(left); | |
| 20349 return true; | |
| 20350 } | |
| 20351 | |
| 20352 if (left === state.syntax["function"]) { | |
| 20353 warning("W023", state.tokens.curr); | |
| 20354 } else { | |
| 20355 error("E031", assignToken); | |
| 20356 } | |
| 20357 | |
| 20358 return false; | |
| 20359 } | |
| 20360 | |
| 20361 function assignop(s, f, p) { | |
| 20362 var x = infix(s, typeof f === "function" ? f : function(left, that) { | |
| 20363 that.left = left; | |
| 20364 | |
| 20365 checkLeftSideAssign(left, that, { allowDestructuring: true }); | |
| 20366 | |
| 20367 that.right = expression(10); | |
| 20368 | |
| 20369 return that; | |
| 20370 }, p); | |
| 20371 | |
| 20372 x.exps = true; | |
| 20373 x.assign = true; | |
| 20374 return x; | |
| 20375 } | |
| 20376 | |
| 20377 | |
| 20378 function bitwise(s, f, p) { | |
| 20379 var x = symbol(s, p); | |
| 20380 reserveName(x); | |
| 20381 x.infix = true; | |
| 20382 x.led = (typeof f === "function") ? f : function(left) { | |
| 20383 if (state.option.bitwise) { | |
| 20384 warning("W016", this, this.id); | |
| 20385 } | |
| 20386 this.left = left; | |
| 20387 this.right = expression(p); | |
| 20388 return this; | |
| 20389 }; | |
| 20390 return x; | |
| 20391 } | |
| 20392 | |
| 20393 function bitwiseassignop(s) { | |
| 20394 return assignop(s, function(left, that) { | |
| 20395 if (state.option.bitwise) { | |
| 20396 warning("W016", that, that.id); | |
| 20397 } | |
| 20398 | |
| 20399 checkLeftSideAssign(left, that); | |
| 20400 | |
| 20401 that.right = expression(10); | |
| 20402 | |
| 20403 return that; | |
| 20404 }, 20); | |
| 20405 } | |
| 20406 | |
| 20407 function suffix(s) { | |
| 20408 var x = symbol(s, 150); | |
| 20409 | |
| 20410 x.led = function(left) { | |
| 20411 // this = suffix e.g. "++" punctuator | |
| 20412 // left = symbol operated e.g. "a" identifier or "a.b" punctuator | |
| 20413 if (state.option.plusplus) { | |
| 20414 warning("W016", this, this.id); | |
| 20415 } else if ((!left.identifier || isReserved(left)) && left.id !== "." && left.id !== "[") { | |
| 20416 warning("W017", this); | |
| 20417 } | |
| 20418 | |
| 20419 if (left.isMetaProperty) { | |
| 20420 error("E031", this); | |
| 20421 // detect increment/decrement of a const | |
| 20422 // in the case of a.b, left will be the "." punctuator | |
| 20423 } else if (left && left.identifier) { | |
| 20424 state.funct["(scope)"].block.modify(left.value, left); | |
| 20425 } | |
| 20426 | |
| 20427 this.left = left; | |
| 20428 return this; | |
| 20429 }; | |
| 20430 return x; | |
| 20431 } | |
| 20432 | |
| 20433 // fnparam means that this identifier is being defined as a function | |
| 20434 // argument (see identifier()) | |
| 20435 // prop means that this identifier is that of an object property | |
| 20436 | |
| 20437 function optionalidentifier(fnparam, prop, preserve) { | |
| 20438 if (!state.tokens.next.identifier) { | |
| 20439 return; | |
| 20440 } | |
| 20441 | |
| 20442 if (!preserve) { | |
| 20443 advance(); | |
| 20444 } | |
| 20445 | |
| 20446 var curr = state.tokens.curr; | |
| 20447 var val = state.tokens.curr.value; | |
| 20448 | |
| 20449 if (!isReserved(curr)) { | |
| 20450 return val; | |
| 20451 } | |
| 20452 | |
| 20453 if (prop) { | |
| 20454 if (state.inES5()) { | |
| 20455 return val; | |
| 20456 } | |
| 20457 } | |
| 20458 | |
| 20459 if (fnparam && val === "undefined") { | |
| 20460 return val; | |
| 20461 } | |
| 20462 | |
| 20463 warning("W024", state.tokens.curr, state.tokens.curr.id); | |
| 20464 return val; | |
| 20465 } | |
| 20466 | |
| 20467 // fnparam means that this identifier is being defined as a function | |
| 20468 // argument | |
| 20469 // prop means that this identifier is that of an object property | |
| 20470 function identifier(fnparam, prop) { | |
| 20471 var i = optionalidentifier(fnparam, prop, false); | |
| 20472 if (i) { | |
| 20473 return i; | |
| 20474 } | |
| 20475 | |
| 20476 // parameter destructuring with rest operator | |
| 20477 if (state.tokens.next.value === "...") { | |
| 20478 if (!state.inES6(true)) { | |
| 20479 warning("W119", state.tokens.next, "spread/rest operator", "6"); | |
| 20480 } | |
| 20481 advance(); | |
| 20482 | |
| 20483 if (checkPunctuator(state.tokens.next, "...")) { | |
| 20484 warning("E024", state.tokens.next, "..."); | |
| 20485 while (checkPunctuator(state.tokens.next, "...")) { | |
| 20486 advance(); | |
| 20487 } | |
| 20488 } | |
| 20489 | |
| 20490 if (!state.tokens.next.identifier) { | |
| 20491 warning("E024", state.tokens.curr, state.tokens.next.id); | |
| 20492 return; | |
| 20493 } | |
| 20494 | |
| 20495 return identifier(fnparam, prop); | |
| 20496 } else { | |
| 20497 error("E030", state.tokens.next, state.tokens.next.value); | |
| 20498 | |
| 20499 // The token should be consumed after a warning is issued so the parser | |
| 20500 // can continue as though an identifier were found. The semicolon token | |
| 20501 // should not be consumed in this way so that the parser interprets it as | |
| 20502 // a statement delimeter; | |
| 20503 if (state.tokens.next.id !== ";") { | |
| 20504 advance(); | |
| 20505 } | |
| 20506 } | |
| 20507 } | |
| 20508 | |
| 20509 | |
| 20510 function reachable(controlToken) { | |
| 20511 var i = 0, t; | |
| 20512 if (state.tokens.next.id !== ";" || controlToken.inBracelessBlock) { | |
| 20513 return; | |
| 20514 } | |
| 20515 for (;;) { | |
| 20516 do { | |
| 20517 t = peek(i); | |
| 20518 i += 1; | |
| 20519 } while (t.id !== "(end)" && t.id === "(comment)"); | |
| 20520 | |
| 20521 if (t.reach) { | |
| 20522 return; | |
| 20523 } | |
| 20524 if (t.id !== "(endline)") { | |
| 20525 if (t.id === "function") { | |
| 20526 if (state.option.latedef === true) { | |
| 20527 warning("W026", t); | |
| 20528 } | |
| 20529 break; | |
| 20530 } | |
| 20531 | |
| 20532 warning("W027", t, t.value, controlToken.value); | |
| 20533 break; | |
| 20534 } | |
| 20535 } | |
| 20536 } | |
| 20537 | |
| 20538 /** | |
| 20539 * Consume the semicolon that delimits the statement currently being parsed, | |
| 20540 * emitting relevant warnings/errors as appropriate. | |
| 20541 * | |
| 20542 * @param {token} stmt - token describing the statement under consideration | |
| 20543 */ | |
| 20544 function parseFinalSemicolon(stmt) { | |
| 20545 if (state.tokens.next.id !== ";") { | |
| 20546 // don't complain about unclosed templates / strings | |
| 20547 if (state.tokens.next.isUnclosed) return advance(); | |
| 20548 | |
| 20549 var sameLine = startLine(state.tokens.next) === state.tokens.curr.line && | |
| 20550 state.tokens.next.id !== "(end)"; | |
| 20551 var blockEnd = checkPunctuator(state.tokens.next, "}"); | |
| 20552 | |
| 20553 if (sameLine && !blockEnd && !(stmt.id === "do" && state.inES6(true))) { | |
| 20554 errorAt("E058", state.tokens.curr.line, state.tokens.curr.character); | |
| 20555 } else if (!state.option.asi) { | |
| 20556 // If this is the last statement in a block that ends on | |
| 20557 // the same line *and* option lastsemic is on, ignore the warning. | |
| 20558 // Otherwise, complain about missing semicolon. | |
| 20559 if (!(blockEnd && sameLine && state.option.lastsemic)) { | |
| 20560 warningAt("W033", state.tokens.curr.line, state.tokens.curr.character); | |
| 20561 } | |
| 20562 } | |
| 20563 } else { | |
| 20564 advance(";"); | |
| 20565 } | |
| 20566 } | |
| 20567 | |
| 20568 function statement() { | |
| 20569 var i = indent, r, t = state.tokens.next, hasOwnScope = false; | |
| 20570 | |
| 20571 if (t.id === ";") { | |
| 20572 advance(";"); | |
| 20573 return; | |
| 20574 } | |
| 20575 | |
| 20576 // Is this a labelled statement? | |
| 20577 var res = isReserved(t); | |
| 20578 | |
| 20579 // We're being more tolerant here: if someone uses | |
| 20580 // a FutureReservedWord as a label, we warn but proceed | |
| 20581 // anyway. | |
| 20582 | |
| 20583 if (res && t.meta && t.meta.isFutureReservedWord && peek().id === ":") { | |
| 20584 warning("W024", t, t.id); | |
| 20585 res = false; | |
| 20586 } | |
| 20587 | |
| 20588 if (t.identifier && !res && peek().id === ":") { | |
| 20589 advance(); | |
| 20590 advance(":"); | |
| 20591 | |
| 20592 hasOwnScope = true; | |
| 20593 state.funct["(scope)"].stack(); | |
| 20594 state.funct["(scope)"].block.addBreakLabel(t.value, { token: state.tokens.curr }); | |
| 20595 | |
| 20596 if (!state.tokens.next.labelled && state.tokens.next.value !== "{") { | |
| 20597 warning("W028", state.tokens.next, t.value, state.tokens.next.value); | |
| 20598 } | |
| 20599 | |
| 20600 state.tokens.next.label = t.value; | |
| 20601 t = state.tokens.next; | |
| 20602 } | |
| 20603 | |
| 20604 // Is it a lonely block? | |
| 20605 | |
| 20606 if (t.id === "{") { | |
| 20607 // Is it a switch case block? | |
| 20608 // | |
| 20609 // switch (foo) { | |
| 20610 // case bar: { <= here. | |
| 20611 // ... | |
| 20612 // } | |
| 20613 // } | |
| 20614 var iscase = (state.funct["(verb)"] === "case" && state.tokens.curr.value === ":"); | |
| 20615 block(true, true, false, false, iscase); | |
| 20616 | |
| 20617 if (hasOwnScope) { | |
| 20618 state.funct["(scope)"].unstack(); | |
| 20619 } | |
| 20620 | |
| 20621 return; | |
| 20622 } | |
| 20623 | |
| 20624 // Parse the statement. | |
| 20625 | |
| 20626 r = expression(0, true); | |
| 20627 | |
| 20628 if (r && !(r.identifier && r.value === "function") && | |
| 20629 !(r.type === "(punctuator)" && r.left && | |
| 20630 r.left.identifier && r.left.value === "function")) { | |
| 20631 if (!state.isStrict() && state.stmtMissingStrict()) { | |
| 20632 warning("E007"); | |
| 20633 } | |
| 20634 } | |
| 20635 | |
| 20636 // Look for the final semicolon. | |
| 20637 | |
| 20638 if (!t.block) { | |
| 20639 if (!state.option.expr && (!r || !r.exps)) { | |
| 20640 warning("W030", state.tokens.curr); | |
| 20641 } else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") { | |
| 20642 warning("W031", t); | |
| 20643 } | |
| 20644 parseFinalSemicolon(t); | |
| 20645 } | |
| 20646 | |
| 20647 | |
| 20648 // Restore the indentation. | |
| 20649 | |
| 20650 indent = i; | |
| 20651 if (hasOwnScope) { | |
| 20652 state.funct["(scope)"].unstack(); | |
| 20653 } | |
| 20654 return r; | |
| 20655 } | |
| 20656 | |
| 20657 | |
| 20658 function statements() { | |
| 20659 var a = [], p; | |
| 20660 | |
| 20661 while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") { | |
| 20662 if (state.tokens.next.id === ";") { | |
| 20663 p = peek(); | |
| 20664 | |
| 20665 if (!p || (p.id !== "(" && p.id !== "[")) { | |
| 20666 warning("W032"); | |
| 20667 } | |
| 20668 | |
| 20669 advance(";"); | |
| 20670 } else { | |
| 20671 a.push(statement()); | |
| 20672 } | |
| 20673 } | |
| 20674 return a; | |
| 20675 } | |
| 20676 | |
| 20677 | |
| 20678 /* | |
| 20679 * read all directives | |
| 20680 */ | |
| 20681 function directives() { | |
| 20682 var current = state.tokens.next; | |
| 20683 while (state.tokens.next.id === "(string)") { | |
| 20684 var next = peekIgnoreEOL(); | |
| 20685 if (!isEndOfExpr(current, next)) { | |
| 20686 break; | |
| 20687 } | |
| 20688 current = next; | |
| 20689 | |
| 20690 advance(); | |
| 20691 var directive = state.tokens.curr.value; | |
| 20692 if (state.directive[directive] || | |
| 20693 (directive === "use strict" && state.option.strict === "implied")) { | |
| 20694 warning("W034", state.tokens.curr, directive); | |
| 20695 } | |
| 20696 | |
| 20697 // there's no directive negation, so always set to true | |
| 20698 state.directive[directive] = true; | |
| 20699 | |
| 20700 parseFinalSemicolon(current); | |
| 20701 } | |
| 20702 | |
| 20703 if (state.isStrict()) { | |
| 20704 state.option.undef = true; | |
| 20705 } | |
| 20706 } | |
| 20707 | |
| 20708 | |
| 20709 /* | |
| 20710 * Parses a single block. A block is a sequence of statements wrapped in | |
| 20711 * braces. | |
| 20712 * | |
| 20713 * ordinary - true for everything but function bodies and try blocks. | |
| 20714 * stmt - true if block can be a single statement (e.g. in if/for/while). | |
| 20715 * isfunc - true if block is a function body | |
| 20716 * isfatarrow - true if its a body of a fat arrow function | |
| 20717 * iscase - true if block is a switch case block | |
| 20718 */ | |
| 20719 function block(ordinary, stmt, isfunc, isfatarrow, iscase) { | |
| 20720 var a, | |
| 20721 b = inblock, | |
| 20722 old_indent = indent, | |
| 20723 m, | |
| 20724 t, | |
| 20725 line, | |
| 20726 d; | |
| 20727 | |
| 20728 inblock = ordinary; | |
| 20729 | |
| 20730 t = state.tokens.next; | |
| 20731 | |
| 20732 var metrics = state.funct["(metrics)"]; | |
| 20733 metrics.nestedBlockDepth += 1; | |
| 20734 metrics.verifyMaxNestedBlockDepthPerFunction(); | |
| 20735 | |
| 20736 if (state.tokens.next.id === "{") { | |
| 20737 advance("{"); | |
| 20738 | |
| 20739 // create a new block scope | |
| 20740 state.funct["(scope)"].stack(); | |
| 20741 state.funct["(noblockscopedvar)"] = false; | |
| 20742 | |
| 20743 line = state.tokens.curr.line; | |
| 20744 if (state.tokens.next.id !== "}") { | |
| 20745 indent += state.option.indent; | |
| 20746 while (!ordinary && state.tokens.next.from > indent) { | |
| 20747 indent += state.option.indent; | |
| 20748 } | |
| 20749 | |
| 20750 if (isfunc) { | |
| 20751 m = {}; | |
| 20752 for (d in state.directive) { | |
| 20753 if (_.has(state.directive, d)) { | |
| 20754 m[d] = state.directive[d]; | |
| 20755 } | |
| 20756 } | |
| 20757 directives(); | |
| 20758 | |
| 20759 if (state.option.strict && state.funct["(context)"]["(global)"]) { | |
| 20760 if (!m["use strict"] && !state.isStrict()) { | |
| 20761 warning("E007"); | |
| 20762 } | |
| 20763 } | |
| 20764 } | |
| 20765 | |
| 20766 a = statements(); | |
| 20767 | |
| 20768 metrics.statementCount += a.length; | |
| 20769 | |
| 20770 indent -= state.option.indent; | |
| 20771 } | |
| 20772 | |
| 20773 advance("}", t); | |
| 20774 | |
| 20775 if (isfunc) { | |
| 20776 state.funct["(scope)"].validateParams(); | |
| 20777 if (m) { | |
| 20778 state.directive = m; | |
| 20779 } | |
| 20780 } | |
| 20781 | |
| 20782 state.funct["(scope)"].unstack(); | |
| 20783 | |
| 20784 indent = old_indent; | |
| 20785 } else if (!ordinary) { | |
| 20786 if (isfunc) { | |
| 20787 state.funct["(scope)"].stack(); | |
| 20788 | |
| 20789 m = {}; | |
| 20790 if (stmt && !isfatarrow && !state.inMoz()) { | |
| 20791 error("W118", state.tokens.curr, "function closure expressions"); | |
| 20792 } | |
| 20793 | |
| 20794 if (!stmt) { | |
| 20795 for (d in state.directive) { | |
| 20796 if (_.has(state.directive, d)) { | |
| 20797 m[d] = state.directive[d]; | |
| 20798 } | |
| 20799 } | |
| 20800 } | |
| 20801 expression(10); | |
| 20802 | |
| 20803 if (state.option.strict && state.funct["(context)"]["(global)"]) { | |
| 20804 if (!m["use strict"] && !state.isStrict()) { | |
| 20805 warning("E007"); | |
| 20806 } | |
| 20807 } | |
| 20808 | |
| 20809 state.funct["(scope)"].unstack(); | |
| 20810 } else { | |
| 20811 error("E021", state.tokens.next, "{", state.tokens.next.value); | |
| 20812 } | |
| 20813 } else { | |
| 20814 | |
| 20815 // check to avoid let declaration not within a block | |
| 20816 // though is fine inside for loop initializer section | |
| 20817 state.funct["(noblockscopedvar)"] = state.tokens.next.id !== "for"; | |
| 20818 state.funct["(scope)"].stack(); | |
| 20819 | |
| 20820 if (!stmt || state.option.curly) { | |
| 20821 warning("W116", state.tokens.next, "{", state.tokens.next.value); | |
| 20822 } | |
| 20823 | |
| 20824 state.tokens.next.inBracelessBlock = true; | |
| 20825 indent += state.option.indent; | |
| 20826 // test indentation only if statement is in new line | |
| 20827 a = [statement()]; | |
| 20828 indent -= state.option.indent; | |
| 20829 | |
| 20830 state.funct["(scope)"].unstack(); | |
| 20831 delete state.funct["(noblockscopedvar)"]; | |
| 20832 } | |
| 20833 | |
| 20834 // Don't clear and let it propagate out if it is "break", "return" or similar in switch case | |
| 20835 switch (state.funct["(verb)"]) { | |
| 20836 case "break": | |
| 20837 case "continue": | |
| 20838 case "return": | |
| 20839 case "throw": | |
| 20840 if (iscase) { | |
| 20841 break; | |
| 20842 } | |
| 20843 | |
| 20844 /* falls through */ | |
| 20845 default: | |
| 20846 state.funct["(verb)"] = null; | |
| 20847 } | |
| 20848 | |
| 20849 inblock = b; | |
| 20850 if (ordinary && state.option.noempty && (!a || a.length === 0)) { | |
| 20851 warning("W035", state.tokens.prev); | |
| 20852 } | |
| 20853 metrics.nestedBlockDepth -= 1; | |
| 20854 return a; | |
| 20855 } | |
| 20856 | |
| 20857 | |
| 20858 function countMember(m) { | |
| 20859 if (membersOnly && typeof membersOnly[m] !== "boolean") { | |
| 20860 warning("W036", state.tokens.curr, m); | |
| 20861 } | |
| 20862 if (typeof member[m] === "number") { | |
| 20863 member[m] += 1; | |
| 20864 } else { | |
| 20865 member[m] = 1; | |
| 20866 } | |
| 20867 } | |
| 20868 | |
| 20869 // Build the syntax table by declaring the syntactic elements of the language. | |
| 20870 | |
| 20871 type("(number)", function() { | |
| 20872 return this; | |
| 20873 }); | |
| 20874 | |
| 20875 type("(string)", function() { | |
| 20876 return this; | |
| 20877 }); | |
| 20878 | |
| 20879 state.syntax["(identifier)"] = { | |
| 20880 type: "(identifier)", | |
| 20881 lbp: 0, | |
| 20882 identifier: true, | |
| 20883 | |
| 20884 nud: function() { | |
| 20885 var v = this.value; | |
| 20886 | |
| 20887 // If this identifier is the lone parameter to a shorthand "fat arrow" | |
| 20888 // function definition, i.e. | |
| 20889 // | |
| 20890 // x => x; | |
| 20891 // | |
| 20892 // ...it should not be considered as a variable in the current scope. It | |
| 20893 // will be added to the scope of the new function when the next token is | |
| 20894 // parsed, so it can be safely ignored for now. | |
| 20895 if (state.tokens.next.id === "=>") { | |
| 20896 return this; | |
| 20897 } | |
| 20898 | |
| 20899 if (!state.funct["(comparray)"].check(v)) { | |
| 20900 state.funct["(scope)"].block.use(v, state.tokens.curr); | |
| 20901 } | |
| 20902 return this; | |
| 20903 }, | |
| 20904 | |
| 20905 led: function() { | |
| 20906 error("E033", state.tokens.next, state.tokens.next.value); | |
| 20907 } | |
| 20908 }; | |
| 20909 | |
| 20910 var baseTemplateSyntax = { | |
| 20911 identifier: false, | |
| 20912 template: true, | |
| 20913 }; | |
| 20914 state.syntax["(template)"] = _.extend({ | |
| 20915 lbp: 155, | |
| 20916 type: "(template)", | |
| 20917 nud: doTemplateLiteral, | |
| 20918 led: doTemplateLiteral, | |
| 20919 noSubst: false | |
| 20920 }, baseTemplateSyntax); | |
| 20921 | |
| 20922 state.syntax["(template middle)"] = _.extend({ | |
| 20923 lbp: 0, | |
| 20924 type: "(template middle)", | |
| 20925 middle: true, | |
| 20926 noSubst: false | |
| 20927 }, baseTemplateSyntax); | |
| 20928 | |
| 20929 state.syntax["(template tail)"] = _.extend({ | |
| 20930 lbp: 0, | |
| 20931 type: "(template tail)", | |
| 20932 tail: true, | |
| 20933 noSubst: false | |
| 20934 }, baseTemplateSyntax); | |
| 20935 | |
| 20936 state.syntax["(no subst template)"] = _.extend({ | |
| 20937 lbp: 155, | |
| 20938 type: "(template)", | |
| 20939 nud: doTemplateLiteral, | |
| 20940 led: doTemplateLiteral, | |
| 20941 noSubst: true, | |
| 20942 tail: true // mark as tail, since it's always the last component | |
| 20943 }, baseTemplateSyntax); | |
| 20944 | |
| 20945 type("(regexp)", function() { | |
| 20946 return this; | |
| 20947 }); | |
| 20948 | |
| 20949 // ECMAScript parser | |
| 20950 | |
| 20951 delim("(endline)"); | |
| 20952 (function(x) { | |
| 20953 x.line = x.from = 0; | |
| 20954 })(delim("(begin)")); | |
| 20955 delim("(end)").reach = true; | |
| 20956 delim("(error)").reach = true; | |
| 20957 delim("}").reach = true; | |
| 20958 delim(")"); | |
| 20959 delim("]"); | |
| 20960 delim("\"").reach = true; | |
| 20961 delim("'").reach = true; | |
| 20962 delim(";"); | |
| 20963 delim(":").reach = true; | |
| 20964 delim("#"); | |
| 20965 | |
| 20966 reserve("else"); | |
| 20967 reserve("case").reach = true; | |
| 20968 reserve("catch"); | |
| 20969 reserve("default").reach = true; | |
| 20970 reserve("finally"); | |
| 20971 reservevar("arguments", function(x) { | |
| 20972 if (state.isStrict() && state.funct["(global)"]) { | |
| 20973 warning("E008", x); | |
| 20974 } | |
| 20975 }); | |
| 20976 reservevar("eval"); | |
| 20977 reservevar("false"); | |
| 20978 reservevar("Infinity"); | |
| 20979 reservevar("null"); | |
| 20980 reservevar("this", function(x) { | |
| 20981 if (state.isStrict() && !isMethod() && | |
| 20982 !state.option.validthis && ((state.funct["(statement)"] && | |
| 20983 state.funct["(name)"].charAt(0) > "Z") || state.funct["(global)"])) { | |
| 20984 warning("W040", x); | |
| 20985 } | |
| 20986 }); | |
| 20987 reservevar("true"); | |
| 20988 reservevar("undefined"); | |
| 20989 | |
| 20990 assignop("=", "assign", 20); | |
| 20991 assignop("+=", "assignadd", 20); | |
| 20992 assignop("-=", "assignsub", 20); | |
| 20993 assignop("*=", "assignmult", 20); | |
| 20994 assignop("/=", "assigndiv", 20).nud = function() { | |
| 20995 error("E014"); | |
| 20996 }; | |
| 20997 assignop("%=", "assignmod", 20); | |
| 20998 | |
| 20999 bitwiseassignop("&="); | |
| 21000 bitwiseassignop("|="); | |
| 21001 bitwiseassignop("^="); | |
| 21002 bitwiseassignop("<<="); | |
| 21003 bitwiseassignop(">>="); | |
| 21004 bitwiseassignop(">>>="); | |
| 21005 infix(",", function(left, that) { | |
| 21006 var expr; | |
| 21007 that.exprs = [left]; | |
| 21008 | |
| 21009 if (state.option.nocomma) { | |
| 21010 warning("W127"); | |
| 21011 } | |
| 21012 | |
| 21013 if (!parseComma({ peek: true })) { | |
| 21014 return that; | |
| 21015 } | |
| 21016 while (true) { | |
| 21017 if (!(expr = expression(10))) { | |
| 21018 break; | |
| 21019 } | |
| 21020 that.exprs.push(expr); | |
| 21021 if (state.tokens.next.value !== "," || !parseComma()) { | |
| 21022 break; | |
| 21023 } | |
| 21024 } | |
| 21025 return that; | |
| 21026 }, 10, true); | |
| 21027 | |
| 21028 infix("?", function(left, that) { | |
| 21029 increaseComplexityCount(); | |
| 21030 that.left = left; | |
| 21031 that.right = expression(10); | |
| 21032 advance(":"); | |
| 21033 that["else"] = expression(10); | |
| 21034 return that; | |
| 21035 }, 30); | |
| 21036 | |
| 21037 var orPrecendence = 40; | |
| 21038 infix("||", function(left, that) { | |
| 21039 increaseComplexityCount(); | |
| 21040 that.left = left; | |
| 21041 that.right = expression(orPrecendence); | |
| 21042 return that; | |
| 21043 }, orPrecendence); | |
| 21044 infix("&&", "and", 50); | |
| 21045 bitwise("|", "bitor", 70); | |
| 21046 bitwise("^", "bitxor", 80); | |
| 21047 bitwise("&", "bitand", 90); | |
| 21048 relation("==", function(left, right) { | |
| 21049 var eqnull = state.option.eqnull && | |
| 21050 ((left && left.value) === "null" || (right && right.value) === "null"); | |
| 21051 | |
| 21052 switch (true) { | |
| 21053 case !eqnull && state.option.eqeqeq: | |
| 21054 this.from = this.character; | |
| 21055 warning("W116", this, "===", "=="); | |
| 21056 break; | |
| 21057 case isTypoTypeof(right, left, state): | |
| 21058 warning("W122", this, right.value); | |
| 21059 break; | |
| 21060 case isTypoTypeof(left, right, state): | |
| 21061 warning("W122", this, left.value); | |
| 21062 break; | |
| 21063 } | |
| 21064 | |
| 21065 return this; | |
| 21066 }); | |
| 21067 relation("===", function(left, right) { | |
| 21068 if (isTypoTypeof(right, left, state)) { | |
| 21069 warning("W122", this, right.value); | |
| 21070 } else if (isTypoTypeof(left, right, state)) { | |
| 21071 warning("W122", this, left.value); | |
| 21072 } | |
| 21073 return this; | |
| 21074 }); | |
| 21075 relation("!=", function(left, right) { | |
| 21076 var eqnull = state.option.eqnull && | |
| 21077 ((left && left.value) === "null" || (right && right.value) === "null"); | |
| 21078 | |
| 21079 if (!eqnull && state.option.eqeqeq) { | |
| 21080 this.from = this.character; | |
| 21081 warning("W116", this, "!==", "!="); | |
| 21082 } else if (isTypoTypeof(right, left, state)) { | |
| 21083 warning("W122", this, right.value); | |
| 21084 } else if (isTypoTypeof(left, right, state)) { | |
| 21085 warning("W122", this, left.value); | |
| 21086 } | |
| 21087 return this; | |
| 21088 }); | |
| 21089 relation("!==", function(left, right) { | |
| 21090 if (isTypoTypeof(right, left, state)) { | |
| 21091 warning("W122", this, right.value); | |
| 21092 } else if (isTypoTypeof(left, right, state)) { | |
| 21093 warning("W122", this, left.value); | |
| 21094 } | |
| 21095 return this; | |
| 21096 }); | |
| 21097 relation("<"); | |
| 21098 relation(">"); | |
| 21099 relation("<="); | |
| 21100 relation(">="); | |
| 21101 bitwise("<<", "shiftleft", 120); | |
| 21102 bitwise(">>", "shiftright", 120); | |
| 21103 bitwise(">>>", "shiftrightunsigned", 120); | |
| 21104 infix("in", "in", 120); | |
| 21105 infix("instanceof", function(left, token) { | |
| 21106 var right; | |
| 21107 var scope = state.funct["(scope)"]; | |
| 21108 token.left = left; | |
| 21109 token.right = right = expression(120); | |
| 21110 | |
| 21111 // This condition reflects a syntax error which will be reported by the | |
| 21112 // `expression` function. | |
| 21113 if (!right) { | |
| 21114 return token; | |
| 21115 } | |
| 21116 | |
| 21117 if (right.id === "(number)" || | |
| 21118 right.id === "(string)" || | |
| 21119 right.value === "null" || | |
| 21120 (right.value === "undefined" && !scope.has("undefined")) || | |
| 21121 right.arity === "unary" || | |
| 21122 right.id === "{" || | |
| 21123 (right.id === "[" && !right.right) || | |
| 21124 right.id === "(regexp)" || | |
| 21125 (right.id === "(template)" && !right.tag)) { | |
| 21126 error("E060"); | |
| 21127 } | |
| 21128 | |
| 21129 if (right.id === "function") { | |
| 21130 warning("W139"); | |
| 21131 } | |
| 21132 | |
| 21133 return token; | |
| 21134 }, 120); | |
| 21135 infix("+", function(left, that) { | |
| 21136 var right; | |
| 21137 that.left = left; | |
| 21138 that.right = right = expression(130); | |
| 21139 | |
| 21140 if (left && right && left.id === "(string)" && right.id === "(string)") { | |
| 21141 left.value += right.value; | |
| 21142 left.character = right.character; | |
| 21143 if (!state.option.scripturl && reg.javascriptURL.test(left.value)) { | |
| 21144 warning("W050", left); | |
| 21145 } | |
| 21146 return left; | |
| 21147 } | |
| 21148 | |
| 21149 return that; | |
| 21150 }, 130); | |
| 21151 prefix("+", "num"); | |
| 21152 prefix("+++", function() { | |
| 21153 warning("W007"); | |
| 21154 this.arity = "unary"; | |
| 21155 this.right = expression(150); | |
| 21156 return this; | |
| 21157 }); | |
| 21158 infix("+++", function(left) { | |
| 21159 warning("W007"); | |
| 21160 this.left = left; | |
| 21161 this.right = expression(130); | |
| 21162 return this; | |
| 21163 }, 130); | |
| 21164 infix("-", "sub", 130); | |
| 21165 prefix("-", "neg"); | |
| 21166 prefix("---", function() { | |
| 21167 warning("W006"); | |
| 21168 this.arity = "unary"; | |
| 21169 this.right = expression(150); | |
| 21170 return this; | |
| 21171 }); | |
| 21172 infix("---", function(left) { | |
| 21173 warning("W006"); | |
| 21174 this.left = left; | |
| 21175 this.right = expression(130); | |
| 21176 return this; | |
| 21177 }, 130); | |
| 21178 infix("*", "mult", 140); | |
| 21179 infix("/", "div", 140); | |
| 21180 infix("%", "mod", 140); | |
| 21181 | |
| 21182 suffix("++"); | |
| 21183 prefix("++", "preinc"); | |
| 21184 state.syntax["++"].exps = true; | |
| 21185 state.syntax["++"].ltBoundary = "before"; | |
| 21186 | |
| 21187 suffix("--"); | |
| 21188 prefix("--", "predec"); | |
| 21189 state.syntax["--"].exps = true; | |
| 21190 state.syntax["--"].ltBoundary = "before"; | |
| 21191 | |
| 21192 prefix("delete", function() { | |
| 21193 var p = expression(10); | |
| 21194 if (!p) { | |
| 21195 return this; | |
| 21196 } | |
| 21197 | |
| 21198 if (p.id !== "." && p.id !== "[") { | |
| 21199 warning("W051"); | |
| 21200 } | |
| 21201 this.first = p; | |
| 21202 | |
| 21203 // The `delete` operator accepts unresolvable references when not in strict | |
| 21204 // mode, so the operand may be undefined. | |
| 21205 if (p.identifier && !state.isStrict()) { | |
| 21206 p.forgiveUndef = true; | |
| 21207 } | |
| 21208 return this; | |
| 21209 }).exps = true; | |
| 21210 | |
| 21211 prefix("~", function() { | |
| 21212 if (state.option.bitwise) { | |
| 21213 warning("W016", this, "~"); | |
| 21214 } | |
| 21215 this.arity = "unary"; | |
| 21216 this.right = expression(150); | |
| 21217 return this; | |
| 21218 }); | |
| 21219 | |
| 21220 prefix("...", function() { | |
| 21221 if (!state.inES6(true)) { | |
| 21222 warning("W119", this, "spread/rest operator", "6"); | |
| 21223 } | |
| 21224 | |
| 21225 // TODO: Allow all AssignmentExpression | |
| 21226 // once parsing permits. | |
| 21227 // | |
| 21228 // How to handle eg. number, boolean when the built-in | |
| 21229 // prototype of may have an @@iterator definition? | |
| 21230 // | |
| 21231 // Number.prototype[Symbol.iterator] = function * () { | |
| 21232 // yield this.valueOf(); | |
| 21233 // }; | |
| 21234 // | |
| 21235 // var a = [ ...1 ]; | |
| 21236 // console.log(a); // [1]; | |
| 21237 // | |
| 21238 // for (let n of [...10]) { | |
| 21239 // console.log(n); | |
| 21240 // } | |
| 21241 // // 10 | |
| 21242 // | |
| 21243 // | |
| 21244 // Boolean.prototype[Symbol.iterator] = function * () { | |
| 21245 // yield this.valueOf(); | |
| 21246 // }; | |
| 21247 // | |
| 21248 // var a = [ ...true ]; | |
| 21249 // console.log(a); // [true]; | |
| 21250 // | |
| 21251 // for (let n of [...false]) { | |
| 21252 // console.log(n); | |
| 21253 // } | |
| 21254 // // false | |
| 21255 // | |
| 21256 if (!state.tokens.next.identifier && | |
| 21257 state.tokens.next.type !== "(string)" && | |
| 21258 !checkPunctuators(state.tokens.next, ["[", "("])) { | |
| 21259 | |
| 21260 error("E030", state.tokens.next, state.tokens.next.value); | |
| 21261 } | |
| 21262 this.right = expression(150); | |
| 21263 return this; | |
| 21264 }); | |
| 21265 | |
| 21266 prefix("!", function() { | |
| 21267 this.arity = "unary"; | |
| 21268 this.right = expression(150); | |
| 21269 | |
| 21270 if (!this.right) { // '!' followed by nothing? Give up. | |
| 21271 quit("E041", this); | |
| 21272 } | |
| 21273 | |
| 21274 if (bang[this.right.id] === true) { | |
| 21275 warning("W018", this, "!"); | |
| 21276 } | |
| 21277 return this; | |
| 21278 }); | |
| 21279 | |
| 21280 prefix("typeof", (function() { | |
| 21281 var p = expression(150); | |
| 21282 this.first = this.right = p; | |
| 21283 | |
| 21284 if (!p) { // 'typeof' followed by nothing? Give up. | |
| 21285 quit("E041", this); | |
| 21286 } | |
| 21287 | |
| 21288 // The `typeof` operator accepts unresolvable references, so the operand | |
| 21289 // may be undefined. | |
| 21290 if (p.identifier) { | |
| 21291 p.forgiveUndef = true; | |
| 21292 } | |
| 21293 return this; | |
| 21294 })); | |
| 21295 prefix("new", function() { | |
| 21296 var mp = metaProperty("target", function() { | |
| 21297 if (!state.inES6(true)) { | |
| 21298 warning("W119", state.tokens.prev, "new.target", "6"); | |
| 21299 } | |
| 21300 var inFunction, c = state.funct; | |
| 21301 while (c) { | |
| 21302 inFunction = !c["(global)"]; | |
| 21303 if (!c["(arrow)"]) { break; } | |
| 21304 c = c["(context)"]; | |
| 21305 } | |
| 21306 if (!inFunction) { | |
| 21307 warning("W136", state.tokens.prev, "new.target"); | |
| 21308 } | |
| 21309 }); | |
| 21310 if (mp) { return mp; } | |
| 21311 | |
| 21312 var c = expression(155), i; | |
| 21313 if (c && c.id !== "function") { | |
| 21314 if (c.identifier) { | |
| 21315 c["new"] = true; | |
| 21316 switch (c.value) { | |
| 21317 case "Number": | |
| 21318 case "String": | |
| 21319 case "Boolean": | |
| 21320 case "Math": | |
| 21321 case "JSON": | |
| 21322 warning("W053", state.tokens.prev, c.value); | |
| 21323 break; | |
| 21324 case "Symbol": | |
| 21325 if (state.inES6()) { | |
| 21326 warning("W053", state.tokens.prev, c.value); | |
| 21327 } | |
| 21328 break; | |
| 21329 case "Function": | |
| 21330 if (!state.option.evil) { | |
| 21331 warning("W054"); | |
| 21332 } | |
| 21333 break; | |
| 21334 case "Date": | |
| 21335 case "RegExp": | |
| 21336 case "this": | |
| 21337 break; | |
| 21338 default: | |
| 21339 if (c.id !== "function") { | |
| 21340 i = c.value.substr(0, 1); | |
| 21341 if (state.option.newcap && (i < "A" || i > "Z") && | |
| 21342 !state.funct["(scope)"].isPredefined(c.value)) { | |
| 21343 warning("W055", state.tokens.curr); | |
| 21344 } | |
| 21345 } | |
| 21346 } | |
| 21347 } else { | |
| 21348 if (c.id !== "." && c.id !== "[" && c.id !== "(") { | |
| 21349 warning("W056", state.tokens.curr); | |
| 21350 } | |
| 21351 } | |
| 21352 } else { | |
| 21353 if (!state.option.supernew) | |
| 21354 warning("W057", this); | |
| 21355 } | |
| 21356 if (state.tokens.next.id !== "(" && !state.option.supernew) { | |
| 21357 warning("W058", state.tokens.curr, state.tokens.curr.value); | |
| 21358 } | |
| 21359 this.first = this.right = c; | |
| 21360 return this; | |
| 21361 }); | |
| 21362 state.syntax["new"].exps = true; | |
| 21363 | |
| 21364 prefix("void").exps = true; | |
| 21365 | |
| 21366 infix(".", function(left, that) { | |
| 21367 var m = identifier(false, true); | |
| 21368 | |
| 21369 if (typeof m === "string") { | |
| 21370 countMember(m); | |
| 21371 } | |
| 21372 | |
| 21373 that.left = left; | |
| 21374 that.right = m; | |
| 21375 | |
| 21376 if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") { | |
| 21377 warning("W001"); | |
| 21378 } | |
| 21379 | |
| 21380 if (left && left.value === "arguments" && (m === "callee" || m === "caller")) { | |
| 21381 if (state.option.noarg) | |
| 21382 warning("W059", left, m); | |
| 21383 else if (state.isStrict()) | |
| 21384 error("E008"); | |
| 21385 } else if (!state.option.evil && left && left.value === "document" && | |
| 21386 (m === "write" || m === "writeln")) { | |
| 21387 warning("W060", left); | |
| 21388 } | |
| 21389 | |
| 21390 if (!state.option.evil && (m === "eval" || m === "execScript")) { | |
| 21391 if (isGlobalEval(left, state)) { | |
| 21392 warning("W061"); | |
| 21393 } | |
| 21394 } | |
| 21395 | |
| 21396 return that; | |
| 21397 }, 160, true); | |
| 21398 | |
| 21399 infix("(", function(left, that) { | |
| 21400 if (state.option.immed && left && !left.immed && left.id === "function") { | |
| 21401 warning("W062"); | |
| 21402 } | |
| 21403 | |
| 21404 var n = 0; | |
| 21405 var p = []; | |
| 21406 | |
| 21407 if (left) { | |
| 21408 if (left.type === "(identifier)") { | |
| 21409 if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) { | |
| 21410 if ("Array Number String Boolean Date Object Error Symbol".indexOf(left.value) === -1) { | |
| 21411 if (left.value === "Math") { | |
| 21412 warning("W063", left); | |
| 21413 } else if (state.option.newcap) { | |
| 21414 warning("W064", left); | |
| 21415 } | |
| 21416 } | |
| 21417 } | |
| 21418 } | |
| 21419 } | |
| 21420 | |
| 21421 if (state.tokens.next.id !== ")") { | |
| 21422 for (;;) { | |
| 21423 p[p.length] = expression(10); | |
| 21424 n += 1; | |
| 21425 if (state.tokens.next.id !== ",") { | |
| 21426 break; | |
| 21427 } | |
| 21428 parseComma(); | |
| 21429 } | |
| 21430 } | |
| 21431 | |
| 21432 advance(")"); | |
| 21433 | |
| 21434 if (typeof left === "object") { | |
| 21435 if (!state.inES5() && left.value === "parseInt" && n === 1) { | |
| 21436 warning("W065", state.tokens.curr); | |
| 21437 } | |
| 21438 if (!state.option.evil) { | |
| 21439 if (left.value === "eval" || left.value === "Function" || | |
| 21440 left.value === "execScript") { | |
| 21441 warning("W061", left); | |
| 21442 | |
| 21443 // This conditional expression was initially implemented with a typo | |
| 21444 // which prevented the branch's execution in all cases. While | |
| 21445 // enabling the code will produce behavior that is consistent with | |
| 21446 // the other forms of code evaluation that follow, such a change is | |
| 21447 // also technically incompatable with prior versions of JSHint (due | |
| 21448 // to the fact that the behavior was never formally documented). This | |
| 21449 // branch should be enabled as part of a major release. | |
| 21450 //if (p[0] && p[0].id === "(string)") { | |
| 21451 // addEvalCode(left, p[0]); | |
| 21452 //} | |
| 21453 } else if (p[0] && p[0].id === "(string)" && | |
| 21454 (left.value === "setTimeout" || | |
| 21455 left.value === "setInterval")) { | |
| 21456 warning("W066", left); | |
| 21457 addEvalCode(left, p[0]); | |
| 21458 | |
| 21459 // window.setTimeout/setInterval | |
| 21460 } else if (p[0] && p[0].id === "(string)" && | |
| 21461 left.value === "." && | |
| 21462 left.left.value === "window" && | |
| 21463 (left.right === "setTimeout" || | |
| 21464 left.right === "setInterval")) { | |
| 21465 warning("W066", left); | |
| 21466 addEvalCode(left, p[0]); | |
| 21467 } | |
| 21468 } | |
| 21469 if (!left.identifier && left.id !== "." && left.id !== "[" && left.id !== "=>" && | |
| 21470 left.id !== "(" && left.id !== "&&" && left.id !== "||" && left.id !== "?" && | |
| 21471 !(state.inES6() && left["(name)"])) { | |
| 21472 warning("W067", that); | |
| 21473 } | |
| 21474 } | |
| 21475 | |
| 21476 that.left = left; | |
| 21477 return that; | |
| 21478 }, 155, true).exps = true; | |
| 21479 | |
| 21480 prefix("(", function(rbp) { | |
| 21481 var pn = state.tokens.next, pn1, i = -1; | |
| 21482 var ret, triggerFnExpr, first, last; | |
| 21483 var parens = 1; | |
| 21484 var opening = state.tokens.curr; | |
| 21485 var preceeding = state.tokens.prev; | |
| 21486 var isNecessary = !state.option.singleGroups; | |
| 21487 | |
| 21488 do { | |
| 21489 if (pn.value === "(") { | |
| 21490 parens += 1; | |
| 21491 } else if (pn.value === ")") { | |
| 21492 parens -= 1; | |
| 21493 } | |
| 21494 | |
| 21495 i += 1; | |
| 21496 pn1 = pn; | |
| 21497 pn = peek(i); | |
| 21498 } while (!(parens === 0 && pn1.value === ")") && pn.type !== "(end)"); | |
| 21499 | |
| 21500 if (state.tokens.next.id === "function") { | |
| 21501 triggerFnExpr = state.tokens.next.immed = true; | |
| 21502 } | |
| 21503 | |
| 21504 // If the balanced grouping operator is followed by a "fat arrow", the | |
| 21505 // current token marks the beginning of a "fat arrow" function and parsing | |
| 21506 // should proceed accordingly. | |
| 21507 if (pn.value === "=>") { | |
| 21508 return doFunction({ type: "arrow", parsedOpening: true }); | |
| 21509 } | |
| 21510 | |
| 21511 var exprs = []; | |
| 21512 | |
| 21513 if (state.tokens.next.id !== ")") { | |
| 21514 for (;;) { | |
| 21515 exprs.push(expression(10)); | |
| 21516 | |
| 21517 if (state.tokens.next.id !== ",") { | |
| 21518 break; | |
| 21519 } | |
| 21520 | |
| 21521 if (state.option.nocomma) { | |
| 21522 warning("W127"); | |
| 21523 } | |
| 21524 | |
| 21525 parseComma(); | |
| 21526 } | |
| 21527 } | |
| 21528 | |
| 21529 advance(")", this); | |
| 21530 if (state.option.immed && exprs[0] && exprs[0].id === "function") { | |
| 21531 if (state.tokens.next.id !== "(" && | |
| 21532 state.tokens.next.id !== "." && state.tokens.next.id !== "[") { | |
| 21533 warning("W068", this); | |
| 21534 } | |
| 21535 } | |
| 21536 | |
| 21537 if (!exprs.length) { | |
| 21538 return; | |
| 21539 } | |
| 21540 if (exprs.length > 1) { | |
| 21541 ret = Object.create(state.syntax[","]); | |
| 21542 ret.exprs = exprs; | |
| 21543 | |
| 21544 first = exprs[0]; | |
| 21545 last = exprs[exprs.length - 1]; | |
| 21546 } else { | |
| 21547 ret = first = last = exprs[0]; | |
| 21548 | |
| 21549 if (!isNecessary) { | |
| 21550 isNecessary = | |
| 21551 // Used to distinguish from an ExpressionStatement which may not | |
| 21552 // begin with the `{` and `function` tokens | |
| 21553 (opening.beginsStmt && (ret.id === "{" || triggerFnExpr || isFunctor(ret))) || | |
| 21554 // Used to signal that a function expression is being supplied to | |
| 21555 // some other operator. | |
| 21556 (triggerFnExpr && | |
| 21557 // For parenthesis wrapping a function expression to be considered | |
| 21558 // necessary, the grouping operator should be the left-hand-side of | |
| 21559 // some other operator--either within the parenthesis or directly | |
| 21560 // following them. | |
| 21561 (!isEndOfExpr() || state.tokens.prev.id !== "}")) || | |
| 21562 // Used to demarcate an arrow function as the left-hand side of some | |
| 21563 // operator. | |
| 21564 (isFunctor(ret) && !isEndOfExpr()) || | |
| 21565 // Used as the return value of a single-statement arrow function | |
| 21566 (ret.id === "{" && preceeding.id === "=>") || | |
| 21567 // Used to delineate an integer number literal from a dereferencing | |
| 21568 // punctuator (otherwise interpreted as a decimal point) | |
| 21569 (ret.type === "(number)" && | |
| 21570 checkPunctuator(pn, ".") && /^\d+$/.test(ret.value)) || | |
| 21571 // Used to wrap object destructuring assignment | |
| 21572 (opening.beginsStmt && ret.id === "=" && ret.left.id === "{"); | |
| 21573 } | |
| 21574 } | |
| 21575 | |
| 21576 if (ret) { | |
| 21577 // The operator may be necessary to override the default binding power of | |
| 21578 // neighboring operators (whenever there is an operator in use within the | |
| 21579 // first expression *or* the current group contains multiple expressions) | |
| 21580 if (!isNecessary && (isOperator(first) || ret.exprs)) { | |
| 21581 isNecessary = | |
| 21582 (rbp > first.lbp) || | |
| 21583 (rbp > 0 && rbp === first.lbp) || | |
| 21584 (!isEndOfExpr() && last.lbp < state.tokens.next.lbp); | |
| 21585 } | |
| 21586 | |
| 21587 if (!isNecessary) { | |
| 21588 warning("W126", opening); | |
| 21589 } | |
| 21590 | |
| 21591 ret.paren = true; | |
| 21592 } | |
| 21593 | |
| 21594 return ret; | |
| 21595 }); | |
| 21596 | |
| 21597 application("=>"); | |
| 21598 | |
| 21599 infix("[", function(left, that) { | |
| 21600 var e = expression(10), s; | |
| 21601 if (e && e.type === "(string)") { | |
| 21602 if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) { | |
| 21603 if (isGlobalEval(left, state)) { | |
| 21604 warning("W061"); | |
| 21605 } | |
| 21606 } | |
| 21607 | |
| 21608 countMember(e.value); | |
| 21609 if (!state.option.sub && reg.identifier.test(e.value)) { | |
| 21610 s = state.syntax[e.value]; | |
| 21611 if (!s || !isReserved(s)) { | |
| 21612 warning("W069", state.tokens.prev, e.value); | |
| 21613 } | |
| 21614 } | |
| 21615 } | |
| 21616 advance("]", that); | |
| 21617 | |
| 21618 if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") { | |
| 21619 warning("W001"); | |
| 21620 } | |
| 21621 | |
| 21622 that.left = left; | |
| 21623 that.right = e; | |
| 21624 return that; | |
| 21625 }, 160, true); | |
| 21626 | |
| 21627 function comprehensiveArrayExpression() { | |
| 21628 var res = {}; | |
| 21629 res.exps = true; | |
| 21630 state.funct["(comparray)"].stack(); | |
| 21631 | |
| 21632 // Handle reversed for expressions, used in spidermonkey | |
| 21633 var reversed = false; | |
| 21634 if (state.tokens.next.value !== "for") { | |
| 21635 reversed = true; | |
| 21636 if (!state.inMoz()) { | |
| 21637 warning("W116", state.tokens.next, "for", state.tokens.next.value); | |
| 21638 } | |
| 21639 state.funct["(comparray)"].setState("use"); | |
| 21640 res.right = expression(10); | |
| 21641 } | |
| 21642 | |
| 21643 advance("for"); | |
| 21644 if (state.tokens.next.value === "each") { | |
| 21645 advance("each"); | |
| 21646 if (!state.inMoz()) { | |
| 21647 warning("W118", state.tokens.curr, "for each"); | |
| 21648 } | |
| 21649 } | |
| 21650 advance("("); | |
| 21651 state.funct["(comparray)"].setState("define"); | |
| 21652 res.left = expression(130); | |
| 21653 if (_.contains(["in", "of"], state.tokens.next.value)) { | |
| 21654 advance(); | |
| 21655 } else { | |
| 21656 error("E045", state.tokens.curr); | |
| 21657 } | |
| 21658 state.funct["(comparray)"].setState("generate"); | |
| 21659 expression(10); | |
| 21660 | |
| 21661 advance(")"); | |
| 21662 if (state.tokens.next.value === "if") { | |
| 21663 advance("if"); | |
| 21664 advance("("); | |
| 21665 state.funct["(comparray)"].setState("filter"); | |
| 21666 res.filter = expression(10); | |
| 21667 advance(")"); | |
| 21668 } | |
| 21669 | |
| 21670 if (!reversed) { | |
| 21671 state.funct["(comparray)"].setState("use"); | |
| 21672 res.right = expression(10); | |
| 21673 } | |
| 21674 | |
| 21675 advance("]"); | |
| 21676 state.funct["(comparray)"].unstack(); | |
| 21677 return res; | |
| 21678 } | |
| 21679 | |
| 21680 prefix("[", function() { | |
| 21681 var blocktype = lookupBlockType(); | |
| 21682 if (blocktype.isCompArray) { | |
| 21683 if (!state.option.esnext && !state.inMoz()) { | |
| 21684 warning("W118", state.tokens.curr, "array comprehension"); | |
| 21685 } | |
| 21686 return comprehensiveArrayExpression(); | |
| 21687 } else if (blocktype.isDestAssign) { | |
| 21688 this.destructAssign = destructuringPattern({ openingParsed: true, assignment: true }); | |
| 21689 return this; | |
| 21690 } | |
| 21691 var b = state.tokens.curr.line !== startLine(state.tokens.next); | |
| 21692 this.first = []; | |
| 21693 if (b) { | |
| 21694 indent += state.option.indent; | |
| 21695 if (state.tokens.next.from === indent + state.option.indent) { | |
| 21696 indent += state.option.indent; | |
| 21697 } | |
| 21698 } | |
| 21699 while (state.tokens.next.id !== "(end)") { | |
| 21700 while (state.tokens.next.id === ",") { | |
| 21701 if (!state.option.elision) { | |
| 21702 if (!state.inES5()) { | |
| 21703 // Maintain compat with old options --- ES5 mode without | |
| 21704 // elision=true will warn once per comma | |
| 21705 warning("W070"); | |
| 21706 } else { | |
| 21707 warning("W128"); | |
| 21708 do { | |
| 21709 advance(","); | |
| 21710 } while (state.tokens.next.id === ","); | |
| 21711 continue; | |
| 21712 } | |
| 21713 } | |
| 21714 advance(","); | |
| 21715 } | |
| 21716 | |
| 21717 if (state.tokens.next.id === "]") { | |
| 21718 break; | |
| 21719 } | |
| 21720 | |
| 21721 this.first.push(expression(10)); | |
| 21722 if (state.tokens.next.id === ",") { | |
| 21723 parseComma({ allowTrailing: true }); | |
| 21724 if (state.tokens.next.id === "]" && !state.inES5()) { | |
| 21725 warning("W070", state.tokens.curr); | |
| 21726 break; | |
| 21727 } | |
| 21728 } else { | |
| 21729 if (state.option.trailingcomma && state.inES5()) { | |
| 21730 warningAt("W140", state.tokens.curr.line, state.tokens.curr.character); | |
| 21731 } | |
| 21732 break; | |
| 21733 } | |
| 21734 } | |
| 21735 if (b) { | |
| 21736 indent -= state.option.indent; | |
| 21737 } | |
| 21738 advance("]", this); | |
| 21739 return this; | |
| 21740 }); | |
| 21741 | |
| 21742 | |
| 21743 function isMethod() { | |
| 21744 return state.funct["(statement)"] && state.funct["(statement)"].type === "class" || | |
| 21745 state.funct["(context)"] && state.funct["(context)"]["(verb)"] === "class"; | |
| 21746 } | |
| 21747 | |
| 21748 | |
| 21749 function isPropertyName(token) { | |
| 21750 return token.identifier || token.id === "(string)" || token.id === "(number)"; | |
| 21751 } | |
| 21752 | |
| 21753 | |
| 21754 function propertyName(preserveOrToken) { | |
| 21755 var id; | |
| 21756 var preserve = true; | |
| 21757 if (typeof preserveOrToken === "object") { | |
| 21758 id = preserveOrToken; | |
| 21759 } else { | |
| 21760 preserve = preserveOrToken; | |
| 21761 id = optionalidentifier(false, true, preserve); | |
| 21762 } | |
| 21763 | |
| 21764 if (!id) { | |
| 21765 if (state.tokens.next.id === "(string)") { | |
| 21766 id = state.tokens.next.value; | |
| 21767 if (!preserve) { | |
| 21768 advance(); | |
| 21769 } | |
| 21770 } else if (state.tokens.next.id === "(number)") { | |
| 21771 id = state.tokens.next.value.toString(); | |
| 21772 if (!preserve) { | |
| 21773 advance(); | |
| 21774 } | |
| 21775 } | |
| 21776 } else if (typeof id === "object") { | |
| 21777 if (id.id === "(string)" || id.id === "(identifier)") id = id.value; | |
| 21778 else if (id.id === "(number)") id = id.value.toString(); | |
| 21779 } | |
| 21780 | |
| 21781 if (id === "hasOwnProperty") { | |
| 21782 warning("W001"); | |
| 21783 } | |
| 21784 | |
| 21785 return id; | |
| 21786 } | |
| 21787 | |
| 21788 /** | |
| 21789 * @param {Object} [options] | |
| 21790 * @param {token} [options.loneArg] The argument to the function in cases | |
| 21791 * where it was defined using the | |
| 21792 * single-argument shorthand. | |
| 21793 * @param {bool} [options.parsedOpening] Whether the opening parenthesis has | |
| 21794 * already been parsed. | |
| 21795 * @returns {{ arity: number, params: Array.<string>}} | |
| 21796 */ | |
| 21797 function functionparams(options) { | |
| 21798 var next; | |
| 21799 var paramsIds = []; | |
| 21800 var ident; | |
| 21801 var tokens = []; | |
| 21802 var t; | |
| 21803 var pastDefault = false; | |
| 21804 var pastRest = false; | |
| 21805 var arity = 0; | |
| 21806 var loneArg = options && options.loneArg; | |
| 21807 | |
| 21808 if (loneArg && loneArg.identifier === true) { | |
| 21809 state.funct["(scope)"].addParam(loneArg.value, loneArg); | |
| 21810 return { arity: 1, params: [ loneArg.value ] }; | |
| 21811 } | |
| 21812 | |
| 21813 next = state.tokens.next; | |
| 21814 | |
| 21815 if (!options || !options.parsedOpening) { | |
| 21816 advance("("); | |
| 21817 } | |
| 21818 | |
| 21819 if (state.tokens.next.id === ")") { | |
| 21820 advance(")"); | |
| 21821 return; | |
| 21822 } | |
| 21823 | |
| 21824 function addParam(addParamArgs) { | |
| 21825 state.funct["(scope)"].addParam.apply(state.funct["(scope)"], addParamArgs); | |
| 21826 } | |
| 21827 | |
| 21828 for (;;) { | |
| 21829 arity++; | |
| 21830 // are added to the param scope | |
| 21831 var currentParams = []; | |
| 21832 | |
| 21833 if (_.contains(["{", "["], state.tokens.next.id)) { | |
| 21834 tokens = destructuringPattern(); | |
| 21835 for (t in tokens) { | |
| 21836 t = tokens[t]; | |
| 21837 if (t.id) { | |
| 21838 paramsIds.push(t.id); | |
| 21839 currentParams.push([t.id, t.token]); | |
| 21840 } | |
| 21841 } | |
| 21842 } else { | |
| 21843 if (checkPunctuator(state.tokens.next, "...")) pastRest = true; | |
| 21844 ident = identifier(true); | |
| 21845 if (ident) { | |
| 21846 paramsIds.push(ident); | |
| 21847 currentParams.push([ident, state.tokens.curr]); | |
| 21848 } else { | |
| 21849 // Skip invalid parameter. | |
| 21850 while (!checkPunctuators(state.tokens.next, [",", ")"])) advance(); | |
| 21851 } | |
| 21852 } | |
| 21853 | |
| 21854 // It is valid to have a regular argument after a default argument | |
| 21855 // since undefined can be used for missing parameters. Still warn as it is | |
| 21856 // a possible code smell. | |
| 21857 if (pastDefault) { | |
| 21858 if (state.tokens.next.id !== "=") { | |
| 21859 error("W138", state.tokens.current); | |
| 21860 } | |
| 21861 } | |
| 21862 if (state.tokens.next.id === "=") { | |
| 21863 if (!state.inES6()) { | |
| 21864 warning("W119", state.tokens.next, "default parameters", "6"); | |
| 21865 } | |
| 21866 advance("="); | |
| 21867 pastDefault = true; | |
| 21868 expression(10); | |
| 21869 } | |
| 21870 | |
| 21871 // now we have evaluated the default expression, add the variable to the param scope | |
| 21872 currentParams.forEach(addParam); | |
| 21873 | |
| 21874 if (state.tokens.next.id === ",") { | |
| 21875 if (pastRest) { | |
| 21876 warning("W131", state.tokens.next); | |
| 21877 } | |
| 21878 parseComma(); | |
| 21879 } else { | |
| 21880 advance(")", next); | |
| 21881 return { arity: arity, params: paramsIds }; | |
| 21882 } | |
| 21883 } | |
| 21884 } | |
| 21885 | |
| 21886 function functor(name, token, overwrites) { | |
| 21887 var funct = { | |
| 21888 "(name)" : name, | |
| 21889 "(breakage)" : 0, | |
| 21890 "(loopage)" : 0, | |
| 21891 "(tokens)" : {}, | |
| 21892 "(properties)": {}, | |
| 21893 | |
| 21894 "(catch)" : false, | |
| 21895 "(global)" : false, | |
| 21896 | |
| 21897 "(line)" : null, | |
| 21898 "(character)" : null, | |
| 21899 "(metrics)" : null, | |
| 21900 "(statement)" : null, | |
| 21901 "(context)" : null, | |
| 21902 "(scope)" : null, | |
| 21903 "(comparray)" : null, | |
| 21904 "(generator)" : null, | |
| 21905 "(arrow)" : null, | |
| 21906 "(params)" : null | |
| 21907 }; | |
| 21908 | |
| 21909 if (token) { | |
| 21910 _.extend(funct, { | |
| 21911 "(line)" : token.line, | |
| 21912 "(character)": token.character, | |
| 21913 "(metrics)" : createMetrics(token) | |
| 21914 }); | |
| 21915 } | |
| 21916 | |
| 21917 _.extend(funct, overwrites); | |
| 21918 | |
| 21919 if (funct["(context)"]) { | |
| 21920 funct["(scope)"] = funct["(context)"]["(scope)"]; | |
| 21921 funct["(comparray)"] = funct["(context)"]["(comparray)"]; | |
| 21922 } | |
| 21923 | |
| 21924 return funct; | |
| 21925 } | |
| 21926 | |
| 21927 function isFunctor(token) { | |
| 21928 return "(scope)" in token; | |
| 21929 } | |
| 21930 | |
| 21931 /** | |
| 21932 * Determine if the parser has begun parsing executable code. | |
| 21933 * | |
| 21934 * @param {Token} funct - The current "functor" token | |
| 21935 * | |
| 21936 * @returns {boolean} | |
| 21937 */ | |
| 21938 function hasParsedCode(funct) { | |
| 21939 return funct["(global)"] && !funct["(verb)"]; | |
| 21940 } | |
| 21941 | |
| 21942 /** | |
| 21943 * This function is used as both a null-denotation method *and* a | |
| 21944 * left-denotation method, meaning the first parameter is overloaded. | |
| 21945 */ | |
| 21946 function doTemplateLiteral(leftOrRbp) { | |
| 21947 // ASSERT: this.type === "(template)" | |
| 21948 // jshint validthis: true | |
| 21949 var ctx = this.context; | |
| 21950 var noSubst = this.noSubst; | |
| 21951 var depth = this.depth; | |
| 21952 var left = typeof leftOrRbp === "number" ? null : leftOrRbp; | |
| 21953 | |
| 21954 if (!noSubst) { | |
| 21955 while (!end()) { | |
| 21956 if (!state.tokens.next.template || state.tokens.next.depth > depth) { | |
| 21957 expression(0); // should probably have different rbp? | |
| 21958 } else { | |
| 21959 // skip template start / middle | |
| 21960 advance(); | |
| 21961 } | |
| 21962 } | |
| 21963 } | |
| 21964 | |
| 21965 return { | |
| 21966 id: "(template)", | |
| 21967 type: "(template)", | |
| 21968 tag: left | |
| 21969 }; | |
| 21970 | |
| 21971 function end() { | |
| 21972 if (state.tokens.curr.template && state.tokens.curr.tail && | |
| 21973 state.tokens.curr.context === ctx) return true; | |
| 21974 var complete = (state.tokens.next.template && state.tokens.next.tail && | |
| 21975 state.tokens.next.context === ctx); | |
| 21976 if (complete) advance(); | |
| 21977 return complete || state.tokens.next.isUnclosed; | |
| 21978 } | |
| 21979 } | |
| 21980 | |
| 21981 /** | |
| 21982 * @param {Object} [options] | |
| 21983 * @param {token} [options.name] The identifier belonging to the function (if | |
| 21984 * any) | |
| 21985 * @param {boolean} [options.statement] The statement that triggered creation | |
| 21986 * of the current function. | |
| 21987 * @param {string} [options.type] If specified, either "generator" or "arrow" | |
| 21988 * @param {token} [options.loneArg] The argument to the function in cases | |
| 21989 * where it was defined using the | |
| 21990 * single-argument shorthand | |
| 21991 * @param {bool} [options.parsedOpening] Whether the opening parenthesis has | |
| 21992 * already been parsed | |
| 21993 * @param {token} [options.classExprBinding] Define a function with this | |
| 21994 * identifier in the new function's | |
| 21995 * scope, mimicking the bahavior of | |
| 21996 * class expression names within | |
| 21997 * the body of member functions. | |
| 21998 */ | |
| 21999 function doFunction(options) { | |
| 22000 var f, token, name, statement, classExprBinding, isGenerator, isArrow, ignoreLoopFunc; | |
| 22001 var oldOption = state.option; | |
| 22002 var oldIgnored = state.ignored; | |
| 22003 | |
| 22004 if (options) { | |
| 22005 name = options.name; | |
| 22006 statement = options.statement; | |
| 22007 classExprBinding = options.classExprBinding; | |
| 22008 isGenerator = options.type === "generator"; | |
| 22009 isArrow = options.type === "arrow"; | |
| 22010 ignoreLoopFunc = options.ignoreLoopFunc; | |
| 22011 } | |
| 22012 | |
| 22013 state.option = Object.create(state.option); | |
| 22014 state.ignored = Object.create(state.ignored); | |
| 22015 | |
| 22016 state.funct = functor(name || state.nameStack.infer(), state.tokens.next, { | |
| 22017 "(statement)": statement, | |
| 22018 "(context)": state.funct, | |
| 22019 "(arrow)": isArrow, | |
| 22020 "(generator)": isGenerator | |
| 22021 }); | |
| 22022 | |
| 22023 f = state.funct; | |
| 22024 token = state.tokens.curr; | |
| 22025 token.funct = state.funct; | |
| 22026 | |
| 22027 functions.push(state.funct); | |
| 22028 | |
| 22029 // So that the function is available to itself and referencing itself is not | |
| 22030 // seen as a closure, add the function name to a new scope, but do not | |
| 22031 // test for unused (unused: false) | |
| 22032 // it is a new block scope so that params can override it, it can be block scoped | |
| 22033 // but declarations inside the function don't cause already declared error | |
| 22034 state.funct["(scope)"].stack("functionouter"); | |
| 22035 var internallyAccessibleName = name || classExprBinding; | |
| 22036 if (internallyAccessibleName) { | |
| 22037 state.funct["(scope)"].block.add(internallyAccessibleName, | |
| 22038 classExprBinding ? "class" : "function", state.tokens.curr, false); | |
| 22039 } | |
| 22040 | |
| 22041 // create the param scope (params added in functionparams) | |
| 22042 state.funct["(scope)"].stack("functionparams"); | |
| 22043 | |
| 22044 var paramsInfo = functionparams(options); | |
| 22045 | |
| 22046 if (paramsInfo) { | |
| 22047 state.funct["(params)"] = paramsInfo.params; | |
| 22048 state.funct["(metrics)"].arity = paramsInfo.arity; | |
| 22049 state.funct["(metrics)"].verifyMaxParametersPerFunction(); | |
| 22050 } else { | |
| 22051 state.funct["(metrics)"].arity = 0; | |
| 22052 } | |
| 22053 | |
| 22054 if (isArrow) { | |
| 22055 if (!state.inES6(true)) { | |
| 22056 warning("W119", state.tokens.curr, "arrow function syntax (=>)", "6"); | |
| 22057 } | |
| 22058 | |
| 22059 if (!options.loneArg) { | |
| 22060 advance("=>"); | |
| 22061 } | |
| 22062 } | |
| 22063 | |
| 22064 block(false, true, true, isArrow); | |
| 22065 | |
| 22066 if (!state.option.noyield && isGenerator && | |
| 22067 state.funct["(generator)"] !== "yielded") { | |
| 22068 warning("W124", state.tokens.curr); | |
| 22069 } | |
| 22070 | |
| 22071 state.funct["(metrics)"].verifyMaxStatementsPerFunction(); | |
| 22072 state.funct["(metrics)"].verifyMaxComplexityPerFunction(); | |
| 22073 state.funct["(unusedOption)"] = state.option.unused; | |
| 22074 state.option = oldOption; | |
| 22075 state.ignored = oldIgnored; | |
| 22076 state.funct["(last)"] = state.tokens.curr.line; | |
| 22077 state.funct["(lastcharacter)"] = state.tokens.curr.character; | |
| 22078 | |
| 22079 // unstack the params scope | |
| 22080 state.funct["(scope)"].unstack(); // also does usage and label checks | |
| 22081 | |
| 22082 // unstack the function outer stack | |
| 22083 state.funct["(scope)"].unstack(); | |
| 22084 | |
| 22085 state.funct = state.funct["(context)"]; | |
| 22086 | |
| 22087 if (!ignoreLoopFunc && !state.option.loopfunc && state.funct["(loopage)"]) { | |
| 22088 // If the function we just parsed accesses any non-local variables | |
| 22089 // trigger a warning. Otherwise, the function is safe even within | |
| 22090 // a loop. | |
| 22091 if (f["(isCapturing)"]) { | |
| 22092 warning("W083", token); | |
| 22093 } | |
| 22094 } | |
| 22095 | |
| 22096 return f; | |
| 22097 } | |
| 22098 | |
| 22099 function createMetrics(functionStartToken) { | |
| 22100 return { | |
| 22101 statementCount: 0, | |
| 22102 nestedBlockDepth: -1, | |
| 22103 ComplexityCount: 1, | |
| 22104 arity: 0, | |
| 22105 | |
| 22106 verifyMaxStatementsPerFunction: function() { | |
| 22107 if (state.option.maxstatements && | |
| 22108 this.statementCount > state.option.maxstatements) { | |
| 22109 warning("W071", functionStartToken, this.statementCount); | |
| 22110 } | |
| 22111 }, | |
| 22112 | |
| 22113 verifyMaxParametersPerFunction: function() { | |
| 22114 if (_.isNumber(state.option.maxparams) && | |
| 22115 this.arity > state.option.maxparams) { | |
| 22116 warning("W072", functionStartToken, this.arity); | |
| 22117 } | |
| 22118 }, | |
| 22119 | |
| 22120 verifyMaxNestedBlockDepthPerFunction: function() { | |
| 22121 if (state.option.maxdepth && | |
| 22122 this.nestedBlockDepth > 0 && | |
| 22123 this.nestedBlockDepth === state.option.maxdepth + 1) { | |
| 22124 warning("W073", null, this.nestedBlockDepth); | |
| 22125 } | |
| 22126 }, | |
| 22127 | |
| 22128 verifyMaxComplexityPerFunction: function() { | |
| 22129 var max = state.option.maxcomplexity; | |
| 22130 var cc = this.ComplexityCount; | |
| 22131 if (max && cc > max) { | |
| 22132 warning("W074", functionStartToken, cc); | |
| 22133 } | |
| 22134 } | |
| 22135 }; | |
| 22136 } | |
| 22137 | |
| 22138 function increaseComplexityCount() { | |
| 22139 state.funct["(metrics)"].ComplexityCount += 1; | |
| 22140 } | |
| 22141 | |
| 22142 // Parse assignments that were found instead of conditionals. | |
| 22143 // For example: if (a = 1) { ... } | |
| 22144 | |
| 22145 function checkCondAssignment(expr) { | |
| 22146 var id, paren; | |
| 22147 if (expr) { | |
| 22148 id = expr.id; | |
| 22149 paren = expr.paren; | |
| 22150 if (id === "," && (expr = expr.exprs[expr.exprs.length - 1])) { | |
| 22151 id = expr.id; | |
| 22152 paren = paren || expr.paren; | |
| 22153 } | |
| 22154 } | |
| 22155 switch (id) { | |
| 22156 case "=": | |
| 22157 case "+=": | |
| 22158 case "-=": | |
| 22159 case "*=": | |
| 22160 case "%=": | |
| 22161 case "&=": | |
| 22162 case "|=": | |
| 22163 case "^=": | |
| 22164 case "/=": | |
| 22165 if (!paren && !state.option.boss) { | |
| 22166 warning("W084"); | |
| 22167 } | |
| 22168 } | |
| 22169 } | |
| 22170 | |
| 22171 /** | |
| 22172 * @param {object} props Collection of property descriptors for a given | |
| 22173 * object. | |
| 22174 */ | |
| 22175 function checkProperties(props) { | |
| 22176 // Check for lonely setters if in the ES5 mode. | |
| 22177 if (state.inES5()) { | |
| 22178 for (var name in props) { | |
| 22179 if (props[name] && props[name].setterToken && !props[name].getterToken) { | |
| 22180 warning("W078", props[name].setterToken); | |
| 22181 } | |
| 22182 } | |
| 22183 } | |
| 22184 } | |
| 22185 | |
| 22186 function metaProperty(name, c) { | |
| 22187 if (checkPunctuator(state.tokens.next, ".")) { | |
| 22188 var left = state.tokens.curr.id; | |
| 22189 advance("."); | |
| 22190 var id = identifier(); | |
| 22191 state.tokens.curr.isMetaProperty = true; | |
| 22192 if (name !== id) { | |
| 22193 error("E057", state.tokens.prev, left, id); | |
| 22194 } else { | |
| 22195 c(); | |
| 22196 } | |
| 22197 return state.tokens.curr; | |
| 22198 } | |
| 22199 } | |
| 22200 | |
| 22201 (function(x) { | |
| 22202 x.nud = function() { | |
| 22203 var b, f, i, p, t, isGeneratorMethod = false, nextVal; | |
| 22204 var props = Object.create(null); // All properties, including accessors | |
| 22205 | |
| 22206 b = state.tokens.curr.line !== startLine(state.tokens.next); | |
| 22207 if (b) { | |
| 22208 indent += state.option.indent; | |
| 22209 if (state.tokens.next.from === indent + state.option.indent) { | |
| 22210 indent += state.option.indent; | |
| 22211 } | |
| 22212 } | |
| 22213 | |
| 22214 var blocktype = lookupBlockType(); | |
| 22215 if (blocktype.isDestAssign) { | |
| 22216 this.destructAssign = destructuringPattern({ openingParsed: true, assignment: true }); | |
| 22217 return this; | |
| 22218 } | |
| 22219 | |
| 22220 for (;;) { | |
| 22221 if (state.tokens.next.id === "}") { | |
| 22222 break; | |
| 22223 } | |
| 22224 | |
| 22225 nextVal = state.tokens.next.value; | |
| 22226 if (state.tokens.next.identifier && | |
| 22227 (peekIgnoreEOL().id === "," || peekIgnoreEOL().id === "}")) { | |
| 22228 if (!state.inES6()) { | |
| 22229 warning("W104", state.tokens.next, "object short notation", "6"); | |
| 22230 } | |
| 22231 i = propertyName(true); | |
| 22232 saveProperty(props, i, state.tokens.next); | |
| 22233 | |
| 22234 expression(10); | |
| 22235 | |
| 22236 } else if (peek().id !== ":" && (nextVal === "get" || nextVal === "set")) { | |
| 22237 advance(nextVal); | |
| 22238 | |
| 22239 if (!state.inES5()) { | |
| 22240 error("E034"); | |
| 22241 } | |
| 22242 | |
| 22243 i = propertyName(); | |
| 22244 | |
| 22245 // ES6 allows for get() {...} and set() {...} method | |
| 22246 // definition shorthand syntax, so we don't produce an error | |
| 22247 // if linting ECMAScript 6 code. | |
| 22248 if (!i && !state.inES6()) { | |
| 22249 error("E035"); | |
| 22250 } | |
| 22251 | |
| 22252 // We don't want to save this getter unless it's an actual getter | |
| 22253 // and not an ES6 concise method | |
| 22254 if (i) { | |
| 22255 saveAccessor(nextVal, props, i, state.tokens.curr); | |
| 22256 } | |
| 22257 | |
| 22258 t = state.tokens.next; | |
| 22259 f = doFunction(); | |
| 22260 p = f["(params)"]; | |
| 22261 | |
| 22262 // Don't warn about getter/setter pairs if this is an ES6 concise method | |
| 22263 if (nextVal === "get" && i && p) { | |
| 22264 warning("W076", t, p[0], i); | |
| 22265 } else if (nextVal === "set" && i && f["(metrics)"].arity !== 1) { | |
| 22266 warning("W077", t, i); | |
| 22267 } | |
| 22268 } else { | |
| 22269 if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") { | |
| 22270 if (!state.inES6()) { | |
| 22271 warning("W104", state.tokens.next, "generator functions", "6"); | |
| 22272 } | |
| 22273 advance("*"); | |
| 22274 isGeneratorMethod = true; | |
| 22275 } else { | |
| 22276 isGeneratorMethod = false; | |
| 22277 } | |
| 22278 | |
| 22279 if (state.tokens.next.id === "[") { | |
| 22280 i = computedPropertyName(); | |
| 22281 state.nameStack.set(i); | |
| 22282 } else { | |
| 22283 state.nameStack.set(state.tokens.next); | |
| 22284 i = propertyName(); | |
| 22285 saveProperty(props, i, state.tokens.next); | |
| 22286 | |
| 22287 if (typeof i !== "string") { | |
| 22288 break; | |
| 22289 } | |
| 22290 } | |
| 22291 | |
| 22292 if (state.tokens.next.value === "(") { | |
| 22293 if (!state.inES6()) { | |
| 22294 warning("W104", state.tokens.curr, "concise methods", "6"); | |
| 22295 } | |
| 22296 doFunction({ type: isGeneratorMethod ? "generator" : null }); | |
| 22297 } else { | |
| 22298 advance(":"); | |
| 22299 expression(10); | |
| 22300 } | |
| 22301 } | |
| 22302 | |
| 22303 countMember(i); | |
| 22304 | |
| 22305 if (state.tokens.next.id === ",") { | |
| 22306 parseComma({ allowTrailing: true, property: true }); | |
| 22307 if (state.tokens.next.id === ",") { | |
| 22308 warning("W070", state.tokens.curr); | |
| 22309 } else if (state.tokens.next.id === "}" && !state.inES5()) { | |
| 22310 warning("W070", state.tokens.curr); | |
| 22311 } | |
| 22312 } else { | |
| 22313 if (state.option.trailingcomma && state.inES5()) { | |
| 22314 warningAt("W140", state.tokens.curr.line, state.tokens.curr.character); | |
| 22315 } | |
| 22316 break; | |
| 22317 } | |
| 22318 } | |
| 22319 if (b) { | |
| 22320 indent -= state.option.indent; | |
| 22321 } | |
| 22322 advance("}", this); | |
| 22323 | |
| 22324 checkProperties(props); | |
| 22325 | |
| 22326 return this; | |
| 22327 }; | |
| 22328 x.fud = function() { | |
| 22329 error("E036", state.tokens.curr); | |
| 22330 }; | |
| 22331 }(delim("{"))); | |
| 22332 | |
| 22333 function destructuringPattern(options) { | |
| 22334 var isAssignment = options && options.assignment; | |
| 22335 | |
| 22336 if (!state.inES6()) { | |
| 22337 warning("W104", state.tokens.curr, | |
| 22338 isAssignment ? "destructuring assignment" : "destructuring binding", "6"); | |
| 22339 } | |
| 22340 | |
| 22341 return destructuringPatternRecursive(options); | |
| 22342 } | |
| 22343 | |
| 22344 function destructuringPatternRecursive(options) { | |
| 22345 var ids; | |
| 22346 var identifiers = []; | |
| 22347 var openingParsed = options && options.openingParsed; | |
| 22348 var isAssignment = options && options.assignment; | |
| 22349 var recursiveOptions = isAssignment ? { assignment: isAssignment } : null; | |
| 22350 var firstToken = openingParsed ? state.tokens.curr : state.tokens.next; | |
| 22351 | |
| 22352 var nextInnerDE = function() { | |
| 22353 var ident; | |
| 22354 if (checkPunctuators(state.tokens.next, ["[", "{"])) { | |
| 22355 ids = destructuringPatternRecursive(recursiveOptions); | |
| 22356 for (var id in ids) { | |
| 22357 id = ids[id]; | |
| 22358 identifiers.push({ id: id.id, token: id.token }); | |
| 22359 } | |
| 22360 } else if (checkPunctuator(state.tokens.next, ",")) { | |
| 22361 identifiers.push({ id: null, token: state.tokens.curr }); | |
| 22362 } else if (checkPunctuator(state.tokens.next, "(")) { | |
| 22363 advance("("); | |
| 22364 nextInnerDE(); | |
| 22365 advance(")"); | |
| 22366 } else { | |
| 22367 var is_rest = checkPunctuator(state.tokens.next, "..."); | |
| 22368 | |
| 22369 if (isAssignment) { | |
| 22370 var assignTarget = expression(20); | |
| 22371 if (assignTarget) { | |
| 22372 checkLeftSideAssign(assignTarget); | |
| 22373 | |
| 22374 // if the target was a simple identifier, add it to the list to return | |
| 22375 if (assignTarget.identifier) { | |
| 22376 ident = assignTarget.value; | |
| 22377 } | |
| 22378 } | |
| 22379 } else { | |
| 22380 ident = identifier(); | |
| 22381 } | |
| 22382 if (ident) { | |
| 22383 identifiers.push({ id: ident, token: state.tokens.curr }); | |
| 22384 } | |
| 22385 return is_rest; | |
| 22386 } | |
| 22387 return false; | |
| 22388 }; | |
| 22389 var assignmentProperty = function() { | |
| 22390 var id; | |
| 22391 if (checkPunctuator(state.tokens.next, "[")) { | |
| 22392 advance("["); | |
| 22393 expression(10); | |
| 22394 advance("]"); | |
| 22395 advance(":"); | |
| 22396 nextInnerDE(); | |
| 22397 } else if (state.tokens.next.id === "(string)" || | |
| 22398 state.tokens.next.id === "(number)") { | |
| 22399 advance(); | |
| 22400 advance(":"); | |
| 22401 nextInnerDE(); | |
| 22402 } else { | |
| 22403 // this id will either be the property name or the property name and the assigning identifier | |
| 22404 id = identifier(); | |
| 22405 if (checkPunctuator(state.tokens.next, ":")) { | |
| 22406 advance(":"); | |
| 22407 nextInnerDE(); | |
| 22408 } else if (id) { | |
| 22409 // in this case we are assigning (not declaring), so check assignment | |
| 22410 if (isAssignment) { | |
| 22411 checkLeftSideAssign(state.tokens.curr); | |
| 22412 } | |
| 22413 identifiers.push({ id: id, token: state.tokens.curr }); | |
| 22414 } | |
| 22415 } | |
| 22416 }; | |
| 22417 | |
| 22418 var id, value; | |
| 22419 if (checkPunctuator(firstToken, "[")) { | |
| 22420 if (!openingParsed) { | |
| 22421 advance("["); | |
| 22422 } | |
| 22423 if (checkPunctuator(state.tokens.next, "]")) { | |
| 22424 warning("W137", state.tokens.curr); | |
| 22425 } | |
| 22426 var element_after_rest = false; | |
| 22427 while (!checkPunctuator(state.tokens.next, "]")) { | |
| 22428 if (nextInnerDE() && !element_after_rest && | |
| 22429 checkPunctuator(state.tokens.next, ",")) { | |
| 22430 warning("W130", state.tokens.next); | |
| 22431 element_after_rest = true; | |
| 22432 } | |
| 22433 if (checkPunctuator(state.tokens.next, "=")) { | |
| 22434 if (checkPunctuator(state.tokens.prev, "...")) { | |
| 22435 advance("]"); | |
| 22436 } else { | |
| 22437 advance("="); | |
| 22438 } | |
| 22439 id = state.tokens.prev; | |
| 22440 value = expression(10); | |
| 22441 if (value && value.type === "undefined") { | |
| 22442 warning("W080", id, id.value); | |
| 22443 } | |
| 22444 } | |
| 22445 if (!checkPunctuator(state.tokens.next, "]")) { | |
| 22446 advance(","); | |
| 22447 } | |
| 22448 } | |
| 22449 advance("]"); | |
| 22450 } else if (checkPunctuator(firstToken, "{")) { | |
| 22451 | |
| 22452 if (!openingParsed) { | |
| 22453 advance("{"); | |
| 22454 } | |
| 22455 if (checkPunctuator(state.tokens.next, "}")) { | |
| 22456 warning("W137", state.tokens.curr); | |
| 22457 } | |
| 22458 while (!checkPunctuator(state.tokens.next, "}")) { | |
| 22459 assignmentProperty(); | |
| 22460 if (checkPunctuator(state.tokens.next, "=")) { | |
| 22461 advance("="); | |
| 22462 id = state.tokens.prev; | |
| 22463 value = expression(10); | |
| 22464 if (value && value.type === "undefined") { | |
| 22465 warning("W080", id, id.value); | |
| 22466 } | |
| 22467 } | |
| 22468 if (!checkPunctuator(state.tokens.next, "}")) { | |
| 22469 advance(","); | |
| 22470 if (checkPunctuator(state.tokens.next, "}")) { | |
| 22471 // Trailing comma | |
| 22472 // ObjectBindingPattern: { BindingPropertyList , } | |
| 22473 break; | |
| 22474 } | |
| 22475 } | |
| 22476 } | |
| 22477 advance("}"); | |
| 22478 } | |
| 22479 return identifiers; | |
| 22480 } | |
| 22481 | |
| 22482 function destructuringPatternMatch(tokens, value) { | |
| 22483 var first = value.first; | |
| 22484 | |
| 22485 if (!first) | |
| 22486 return; | |
| 22487 | |
| 22488 _.zip(tokens, Array.isArray(first) ? first : [ first ]).forEach(function(val) { | |
| 22489 var token = val[0]; | |
| 22490 var value = val[1]; | |
| 22491 | |
| 22492 if (token && value) | |
| 22493 token.first = value; | |
| 22494 else if (token && token.first && !value) | |
| 22495 warning("W080", token.first, token.first.value); | |
| 22496 }); | |
| 22497 } | |
| 22498 | |
| 22499 function blockVariableStatement(type, statement, context) { | |
| 22500 // used for both let and const statements | |
| 22501 | |
| 22502 var prefix = context && context.prefix; | |
| 22503 var inexport = context && context.inexport; | |
| 22504 var isLet = type === "let"; | |
| 22505 var isConst = type === "const"; | |
| 22506 var tokens, lone, value, letblock; | |
| 22507 | |
| 22508 if (!state.inES6()) { | |
| 22509 warning("W104", state.tokens.curr, type, "6"); | |
| 22510 } | |
| 22511 | |
| 22512 if (isLet && state.tokens.next.value === "(") { | |
| 22513 if (!state.inMoz()) { | |
| 22514 warning("W118", state.tokens.next, "let block"); | |
| 22515 } | |
| 22516 advance("("); | |
| 22517 state.funct["(scope)"].stack(); | |
| 22518 letblock = true; | |
| 22519 } else if (state.funct["(noblockscopedvar)"]) { | |
| 22520 error("E048", state.tokens.curr, isConst ? "Const" : "Let"); | |
| 22521 } | |
| 22522 | |
| 22523 statement.first = []; | |
| 22524 for (;;) { | |
| 22525 var names = []; | |
| 22526 if (_.contains(["{", "["], state.tokens.next.value)) { | |
| 22527 tokens = destructuringPattern(); | |
| 22528 lone = false; | |
| 22529 } else { | |
| 22530 tokens = [ { id: identifier(), token: state.tokens.curr } ]; | |
| 22531 lone = true; | |
| 22532 } | |
| 22533 | |
| 22534 if (!prefix && isConst && state.tokens.next.id !== "=") { | |
| 22535 warning("E012", state.tokens.curr, state.tokens.curr.value); | |
| 22536 } | |
| 22537 | |
| 22538 for (var t in tokens) { | |
| 22539 if (tokens.hasOwnProperty(t)) { | |
| 22540 t = tokens[t]; | |
| 22541 if (state.funct["(scope)"].block.isGlobal()) { | |
| 22542 if (predefined[t.id] === false) { | |
| 22543 warning("W079", t.token, t.id); | |
| 22544 } | |
| 22545 } | |
| 22546 if (t.id && !state.funct["(noblockscopedvar)"]) { | |
| 22547 state.funct["(scope)"].addlabel(t.id, { | |
| 22548 type: type, | |
| 22549 token: t.token }); | |
| 22550 names.push(t.token); | |
| 22551 } | |
| 22552 } | |
| 22553 } | |
| 22554 | |
| 22555 if (state.tokens.next.id === "=") { | |
| 22556 advance("="); | |
| 22557 if (!prefix && peek(0).id === "=" && state.tokens.next.identifier) { | |
| 22558 warning("W120", state.tokens.next, state.tokens.next.value); | |
| 22559 } | |
| 22560 var id = state.tokens.prev; | |
| 22561 // don't accept `in` in expression if prefix is used for ForIn/Of loop. | |
| 22562 value = expression(prefix ? 120 : 10); | |
| 22563 if (!prefix && value && value.type === "undefined") { | |
| 22564 warning("W080", id, id.value); | |
| 22565 } | |
| 22566 if (lone) { | |
| 22567 tokens[0].first = value; | |
| 22568 } else { | |
| 22569 destructuringPatternMatch(names, value); | |
| 22570 } | |
| 22571 } | |
| 22572 | |
| 22573 if (!prefix) { | |
| 22574 for (t in tokens) { | |
| 22575 if (tokens.hasOwnProperty(t)) { | |
| 22576 t = tokens[t]; | |
| 22577 state.funct["(scope)"].initialize(t.id); | |
| 22578 | |
| 22579 if (lone && inexport) { | |
| 22580 state.funct["(scope)"].setExported(t.token.value, t.token); | |
| 22581 } | |
| 22582 } | |
| 22583 } | |
| 22584 } | |
| 22585 | |
| 22586 statement.first = statement.first.concat(names); | |
| 22587 | |
| 22588 if (state.tokens.next.id !== ",") { | |
| 22589 break; | |
| 22590 } | |
| 22591 parseComma(); | |
| 22592 } | |
| 22593 if (letblock) { | |
| 22594 advance(")"); | |
| 22595 block(true, true); | |
| 22596 statement.block = true; | |
| 22597 state.funct["(scope)"].unstack(); | |
| 22598 } | |
| 22599 | |
| 22600 return statement; | |
| 22601 } | |
| 22602 | |
| 22603 var conststatement = stmt("const", function(context) { | |
| 22604 return blockVariableStatement("const", this, context); | |
| 22605 }); | |
| 22606 conststatement.exps = true; | |
| 22607 | |
| 22608 var letstatement = stmt("let", function(context) { | |
| 22609 return blockVariableStatement("let", this, context); | |
| 22610 }); | |
| 22611 letstatement.exps = true; | |
| 22612 | |
| 22613 var varstatement = stmt("var", function(context) { | |
| 22614 var prefix = context && context.prefix; | |
| 22615 var inexport = context && context.inexport; | |
| 22616 var tokens, lone, value; | |
| 22617 | |
| 22618 this.first = []; | |
| 22619 for (;;) { | |
| 22620 var names = []; | |
| 22621 if (_.contains(["{", "["], state.tokens.next.value)) { | |
| 22622 tokens = destructuringPattern(); | |
| 22623 lone = false; | |
| 22624 } else { | |
| 22625 tokens = [ { id: identifier(), token: state.tokens.curr } ]; | |
| 22626 lone = true; | |
| 22627 } | |
| 22628 | |
| 22629 if (state.option.varstmt) { | |
| 22630 warning("W132", this); | |
| 22631 } | |
| 22632 | |
| 22633 this.first = this.first.concat(names); | |
| 22634 | |
| 22635 for (var t in tokens) { | |
| 22636 if (tokens.hasOwnProperty(t)) { | |
| 22637 t = tokens[t]; | |
| 22638 if (state.funct["(global)"] && !state.impliedClosure()) { | |
| 22639 if (predefined[t.id] === false) { | |
| 22640 warning("W079", t.token, t.id); | |
| 22641 } else if (state.option.futurehostile === false) { | |
| 22642 if ((!state.inES5() && vars.ecmaIdentifiers[5][t.id] === false) || | |
| 22643 (!state.inES6() && vars.ecmaIdentifiers[6][t.id] === false)) { | |
| 22644 warning("W129", t.token, t.id); | |
| 22645 } | |
| 22646 } | |
| 22647 } | |
| 22648 if (t.id) { | |
| 22649 state.funct["(scope)"].addlabel(t.id, { | |
| 22650 type: "var", | |
| 22651 token: t.token }); | |
| 22652 | |
| 22653 if (lone && inexport) { | |
| 22654 state.funct["(scope)"].setExported(t.id, t.token); | |
| 22655 } | |
| 22656 names.push(t.token); | |
| 22657 } | |
| 22658 } | |
| 22659 } | |
| 22660 | |
| 22661 if (state.tokens.next.id === "=") { | |
| 22662 state.nameStack.set(state.tokens.curr); | |
| 22663 | |
| 22664 advance("="); | |
| 22665 if (peek(0).id === "=" && state.tokens.next.identifier) { | |
| 22666 if (!prefix && | |
| 22667 !state.funct["(params)"] || | |
| 22668 state.funct["(params)"].indexOf(state.tokens.next.value) === -1) { | |
| 22669 warning("W120", state.tokens.next, state.tokens.next.value); | |
| 22670 } | |
| 22671 } | |
| 22672 var id = state.tokens.prev; | |
| 22673 // don't accept `in` in expression if prefix is used for ForIn/Of loop. | |
| 22674 value = expression(prefix ? 120 : 10); | |
| 22675 if (value && !prefix && !state.funct["(loopage)"] && value.type === "undefined") { | |
| 22676 warning("W080", id, id.value); | |
| 22677 } | |
| 22678 if (lone) { | |
| 22679 tokens[0].first = value; | |
| 22680 } else { | |
| 22681 destructuringPatternMatch(names, value); | |
| 22682 } | |
| 22683 } | |
| 22684 | |
| 22685 if (state.tokens.next.id !== ",") { | |
| 22686 break; | |
| 22687 } | |
| 22688 parseComma(); | |
| 22689 } | |
| 22690 | |
| 22691 return this; | |
| 22692 }); | |
| 22693 varstatement.exps = true; | |
| 22694 | |
| 22695 blockstmt("class", function(rbp) { | |
| 22696 return classdef.call(this, rbp, true); | |
| 22697 }); | |
| 22698 | |
| 22699 function classdef(rbp, isStatement) { | |
| 22700 | |
| 22701 /*jshint validthis:true */ | |
| 22702 if (!state.inES6()) { | |
| 22703 warning("W104", state.tokens.curr, "class", "6"); | |
| 22704 } | |
| 22705 if (isStatement) { | |
| 22706 // BindingIdentifier | |
| 22707 this.name = identifier(); | |
| 22708 | |
| 22709 state.funct["(scope)"].addlabel(this.name, { | |
| 22710 type: "class", | |
| 22711 token: state.tokens.curr }); | |
| 22712 | |
| 22713 } else if (state.tokens.next.identifier && state.tokens.next.value !== "extends") { | |
| 22714 // BindingIdentifier(opt) | |
| 22715 this.name = identifier(); | |
| 22716 this.namedExpr = true; | |
| 22717 } else { | |
| 22718 this.name = state.nameStack.infer(); | |
| 22719 } | |
| 22720 | |
| 22721 classtail(this); | |
| 22722 | |
| 22723 if (isStatement) { | |
| 22724 state.funct["(scope)"].initialize(this.name); | |
| 22725 } | |
| 22726 | |
| 22727 return this; | |
| 22728 } | |
| 22729 | |
| 22730 function classtail(c) { | |
| 22731 var wasInClassBody = state.inClassBody; | |
| 22732 // ClassHeritage(opt) | |
| 22733 if (state.tokens.next.value === "extends") { | |
| 22734 advance("extends"); | |
| 22735 c.heritage = expression(10); | |
| 22736 } | |
| 22737 | |
| 22738 state.inClassBody = true; | |
| 22739 advance("{"); | |
| 22740 // ClassBody(opt) | |
| 22741 c.body = classbody(c); | |
| 22742 advance("}"); | |
| 22743 state.inClassBody = wasInClassBody; | |
| 22744 } | |
| 22745 | |
| 22746 function classbody(c) { | |
| 22747 var name; | |
| 22748 var isStatic; | |
| 22749 var isGenerator; | |
| 22750 var getset; | |
| 22751 var props = Object.create(null); | |
| 22752 var staticProps = Object.create(null); | |
| 22753 var computed; | |
| 22754 for (var i = 0; state.tokens.next.id !== "}"; ++i) { | |
| 22755 name = state.tokens.next; | |
| 22756 isStatic = false; | |
| 22757 isGenerator = false; | |
| 22758 getset = null; | |
| 22759 | |
| 22760 // The ES6 grammar for ClassElement includes the `;` token, but it is | |
| 22761 // defined only as a placeholder to facilitate future language | |
| 22762 // extensions. In ES6 code, it serves no purpose. | |
| 22763 if (name.id === ";") { | |
| 22764 warning("W032"); | |
| 22765 advance(";"); | |
| 22766 continue; | |
| 22767 } | |
| 22768 | |
| 22769 if (name.id === "*") { | |
| 22770 isGenerator = true; | |
| 22771 advance("*"); | |
| 22772 name = state.tokens.next; | |
| 22773 } | |
| 22774 if (name.id === "[") { | |
| 22775 name = computedPropertyName(); | |
| 22776 computed = true; | |
| 22777 } else if (isPropertyName(name)) { | |
| 22778 // Non-Computed PropertyName | |
| 22779 advance(); | |
| 22780 computed = false; | |
| 22781 if (name.identifier && name.value === "static") { | |
| 22782 if (checkPunctuator(state.tokens.next, "*")) { | |
| 22783 isGenerator = true; | |
| 22784 advance("*"); | |
| 22785 } | |
| 22786 if (isPropertyName(state.tokens.next) || state.tokens.next.id === "[") { | |
| 22787 computed = state.tokens.next.id === "["; | |
| 22788 isStatic = true; | |
| 22789 name = state.tokens.next; | |
| 22790 if (state.tokens.next.id === "[") { | |
| 22791 name = computedPropertyName(); | |
| 22792 } else advance(); | |
| 22793 } | |
| 22794 } | |
| 22795 | |
| 22796 if (name.identifier && (name.value === "get" || name.value === "set")) { | |
| 22797 if (isPropertyName(state.tokens.next) || state.tokens.next.id === "[") { | |
| 22798 computed = state.tokens.next.id === "["; | |
| 22799 getset = name; | |
| 22800 name = state.tokens.next; | |
| 22801 if (state.tokens.next.id === "[") { | |
| 22802 name = computedPropertyName(); | |
| 22803 } else advance(); | |
| 22804 } | |
| 22805 } | |
| 22806 } else { | |
| 22807 warning("W052", state.tokens.next, state.tokens.next.value || state.tokens.next.type); | |
| 22808 advance(); | |
| 22809 continue; | |
| 22810 } | |
| 22811 | |
| 22812 if (!checkPunctuator(state.tokens.next, "(")) { | |
| 22813 // error --- class properties must be methods | |
| 22814 error("E054", state.tokens.next, state.tokens.next.value); | |
| 22815 while (state.tokens.next.id !== "}" && | |
| 22816 !checkPunctuator(state.tokens.next, "(")) { | |
| 22817 advance(); | |
| 22818 } | |
| 22819 if (state.tokens.next.value !== "(") { | |
| 22820 doFunction({ statement: c }); | |
| 22821 } | |
| 22822 } | |
| 22823 | |
| 22824 if (!computed) { | |
| 22825 // We don't know how to determine if we have duplicate computed property names :( | |
| 22826 if (getset) { | |
| 22827 saveAccessor( | |
| 22828 getset.value, isStatic ? staticProps : props, name.value, name, true, isStatic); | |
| 22829 } else { | |
| 22830 if (name.value === "constructor") { | |
| 22831 state.nameStack.set(c); | |
| 22832 } else { | |
| 22833 state.nameStack.set(name); | |
| 22834 } | |
| 22835 saveProperty(isStatic ? staticProps : props, name.value, name, true, isStatic); | |
| 22836 } | |
| 22837 } | |
| 22838 | |
| 22839 if (getset && name.value === "constructor") { | |
| 22840 var propDesc = getset.value === "get" ? "class getter method" : "class setter method"; | |
| 22841 error("E049", name, propDesc, "constructor"); | |
| 22842 } else if (name.value === "prototype") { | |
| 22843 error("E049", name, "class method", "prototype"); | |
| 22844 } | |
| 22845 | |
| 22846 propertyName(name); | |
| 22847 | |
| 22848 doFunction({ | |
| 22849 statement: c, | |
| 22850 type: isGenerator ? "generator" : null, | |
| 22851 classExprBinding: c.namedExpr ? c.name : null | |
| 22852 }); | |
| 22853 } | |
| 22854 | |
| 22855 checkProperties(props); | |
| 22856 } | |
| 22857 | |
| 22858 blockstmt("function", function(context) { | |
| 22859 var inexport = context && context.inexport; | |
| 22860 var generator = false; | |
| 22861 if (state.tokens.next.value === "*") { | |
| 22862 advance("*"); | |
| 22863 if (state.inES6(true)) { | |
| 22864 generator = true; | |
| 22865 } else { | |
| 22866 warning("W119", state.tokens.curr, "function*", "6"); | |
| 22867 } | |
| 22868 } | |
| 22869 if (inblock) { | |
| 22870 warning("W082", state.tokens.curr); | |
| 22871 } | |
| 22872 var i = optionalidentifier(); | |
| 22873 | |
| 22874 state.funct["(scope)"].addlabel(i, { | |
| 22875 type: "function", | |
| 22876 token: state.tokens.curr }); | |
| 22877 | |
| 22878 if (i === undefined) { | |
| 22879 warning("W025"); | |
| 22880 } else if (inexport) { | |
| 22881 state.funct["(scope)"].setExported(i, state.tokens.prev); | |
| 22882 } | |
| 22883 | |
| 22884 doFunction({ | |
| 22885 name: i, | |
| 22886 statement: this, | |
| 22887 type: generator ? "generator" : null, | |
| 22888 ignoreLoopFunc: inblock // a declaration may already have warned | |
| 22889 }); | |
| 22890 if (state.tokens.next.id === "(" && state.tokens.next.line === state.tokens.curr.line) { | |
| 22891 error("E039"); | |
| 22892 } | |
| 22893 return this; | |
| 22894 }); | |
| 22895 | |
| 22896 prefix("function", function() { | |
| 22897 var generator = false; | |
| 22898 | |
| 22899 if (state.tokens.next.value === "*") { | |
| 22900 if (!state.inES6()) { | |
| 22901 warning("W119", state.tokens.curr, "function*", "6"); | |
| 22902 } | |
| 22903 advance("*"); | |
| 22904 generator = true; | |
| 22905 } | |
| 22906 | |
| 22907 var i = optionalidentifier(); | |
| 22908 doFunction({ name: i, type: generator ? "generator" : null }); | |
| 22909 return this; | |
| 22910 }); | |
| 22911 | |
| 22912 blockstmt("if", function() { | |
| 22913 var t = state.tokens.next; | |
| 22914 increaseComplexityCount(); | |
| 22915 state.condition = true; | |
| 22916 advance("("); | |
| 22917 var expr = expression(0); | |
| 22918 | |
| 22919 if (!expr) { | |
| 22920 quit("E041", this); | |
| 22921 } | |
| 22922 | |
| 22923 checkCondAssignment(expr); | |
| 22924 | |
| 22925 // When the if is within a for-in loop, check if the condition | |
| 22926 // starts with a negation operator | |
| 22927 var forinifcheck = null; | |
| 22928 if (state.option.forin && state.forinifcheckneeded) { | |
| 22929 state.forinifcheckneeded = false; // We only need to analyze the first if inside the loop | |
| 22930 forinifcheck = state.forinifchecks[state.forinifchecks.length - 1]; | |
| 22931 if (expr.type === "(punctuator)" && expr.value === "!") { | |
| 22932 forinifcheck.type = "(negative)"; | |
| 22933 } else { | |
| 22934 forinifcheck.type = "(positive)"; | |
| 22935 } | |
| 22936 } | |
| 22937 | |
| 22938 advance(")", t); | |
| 22939 state.condition = false; | |
| 22940 var s = block(true, true); | |
| 22941 | |
| 22942 // When the if is within a for-in loop and the condition has a negative form, | |
| 22943 // check if the body contains nothing but a continue statement | |
| 22944 if (forinifcheck && forinifcheck.type === "(negative)") { | |
| 22945 if (s && s[0] && s[0].type === "(identifier)" && s[0].value === "continue") { | |
| 22946 forinifcheck.type = "(negative-with-continue)"; | |
| 22947 } | |
| 22948 } | |
| 22949 | |
| 22950 if (state.tokens.next.id === "else") { | |
| 22951 advance("else"); | |
| 22952 if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") { | |
| 22953 statement(); | |
| 22954 } else { | |
| 22955 block(true, true); | |
| 22956 } | |
| 22957 } | |
| 22958 return this; | |
| 22959 }); | |
| 22960 | |
| 22961 blockstmt("try", function() { | |
| 22962 var b; | |
| 22963 | |
| 22964 function doCatch() { | |
| 22965 advance("catch"); | |
| 22966 advance("("); | |
| 22967 | |
| 22968 state.funct["(scope)"].stack("catchparams"); | |
| 22969 | |
| 22970 if (checkPunctuators(state.tokens.next, ["[", "{"])) { | |
| 22971 var tokens = destructuringPattern(); | |
| 22972 _.each(tokens, function(token) { | |
| 22973 if (token.id) { | |
| 22974 state.funct["(scope)"].addParam(token.id, token, "exception"); | |
| 22975 } | |
| 22976 }); | |
| 22977 } else if (state.tokens.next.type !== "(identifier)") { | |
| 22978 warning("E030", state.tokens.next, state.tokens.next.value); | |
| 22979 } else { | |
| 22980 // only advance if we have an identifier so we can continue parsing in the most common error - that no param is given. | |
| 22981 state.funct["(scope)"].addParam(identifier(), state.tokens.curr, "exception"); | |
| 22982 } | |
| 22983 | |
| 22984 if (state.tokens.next.value === "if") { | |
| 22985 if (!state.inMoz()) { | |
| 22986 warning("W118", state.tokens.curr, "catch filter"); | |
| 22987 } | |
| 22988 advance("if"); | |
| 22989 expression(0); | |
| 22990 } | |
| 22991 | |
| 22992 advance(")"); | |
| 22993 | |
| 22994 block(false); | |
| 22995 | |
| 22996 state.funct["(scope)"].unstack(); | |
| 22997 } | |
| 22998 | |
| 22999 block(true); | |
| 23000 | |
| 23001 while (state.tokens.next.id === "catch") { | |
| 23002 increaseComplexityCount(); | |
| 23003 if (b && (!state.inMoz())) { | |
| 23004 warning("W118", state.tokens.next, "multiple catch blocks"); | |
| 23005 } | |
| 23006 doCatch(); | |
| 23007 b = true; | |
| 23008 } | |
| 23009 | |
| 23010 if (state.tokens.next.id === "finally") { | |
| 23011 advance("finally"); | |
| 23012 block(true); | |
| 23013 return; | |
| 23014 } | |
| 23015 | |
| 23016 if (!b) { | |
| 23017 error("E021", state.tokens.next, "catch", state.tokens.next.value); | |
| 23018 } | |
| 23019 | |
| 23020 return this; | |
| 23021 }); | |
| 23022 | |
| 23023 blockstmt("while", function() { | |
| 23024 var t = state.tokens.next; | |
| 23025 state.funct["(breakage)"] += 1; | |
| 23026 state.funct["(loopage)"] += 1; | |
| 23027 increaseComplexityCount(); | |
| 23028 advance("("); | |
| 23029 checkCondAssignment(expression(0)); | |
| 23030 advance(")", t); | |
| 23031 block(true, true); | |
| 23032 state.funct["(breakage)"] -= 1; | |
| 23033 state.funct["(loopage)"] -= 1; | |
| 23034 return this; | |
| 23035 }).labelled = true; | |
| 23036 | |
| 23037 blockstmt("with", function() { | |
| 23038 var t = state.tokens.next; | |
| 23039 if (state.isStrict()) { | |
| 23040 error("E010", state.tokens.curr); | |
| 23041 } else if (!state.option.withstmt) { | |
| 23042 warning("W085", state.tokens.curr); | |
| 23043 } | |
| 23044 | |
| 23045 advance("("); | |
| 23046 expression(0); | |
| 23047 advance(")", t); | |
| 23048 block(true, true); | |
| 23049 | |
| 23050 return this; | |
| 23051 }); | |
| 23052 | |
| 23053 blockstmt("switch", function() { | |
| 23054 var t = state.tokens.next; | |
| 23055 var g = false; | |
| 23056 var noindent = false; | |
| 23057 | |
| 23058 state.funct["(breakage)"] += 1; | |
| 23059 advance("("); | |
| 23060 checkCondAssignment(expression(0)); | |
| 23061 advance(")", t); | |
| 23062 t = state.tokens.next; | |
| 23063 advance("{"); | |
| 23064 | |
| 23065 if (state.tokens.next.from === indent) | |
| 23066 noindent = true; | |
| 23067 | |
| 23068 if (!noindent) | |
| 23069 indent += state.option.indent; | |
| 23070 | |
| 23071 this.cases = []; | |
| 23072 | |
| 23073 for (;;) { | |
| 23074 switch (state.tokens.next.id) { | |
| 23075 case "case": | |
| 23076 switch (state.funct["(verb)"]) { | |
| 23077 case "yield": | |
| 23078 case "break": | |
| 23079 case "case": | |
| 23080 case "continue": | |
| 23081 case "return": | |
| 23082 case "switch": | |
| 23083 case "throw": | |
| 23084 break; | |
| 23085 default: | |
| 23086 // You can tell JSHint that you don't use break intentionally by | |
| 23087 // adding a comment /* falls through */ on a line just before | |
| 23088 // the next `case`. | |
| 23089 if (!state.tokens.curr.caseFallsThrough) { | |
| 23090 warning("W086", state.tokens.curr, "case"); | |
| 23091 } | |
| 23092 } | |
| 23093 | |
| 23094 advance("case"); | |
| 23095 this.cases.push(expression(0)); | |
| 23096 increaseComplexityCount(); | |
| 23097 g = true; | |
| 23098 advance(":"); | |
| 23099 state.funct["(verb)"] = "case"; | |
| 23100 break; | |
| 23101 case "default": | |
| 23102 switch (state.funct["(verb)"]) { | |
| 23103 case "yield": | |
| 23104 case "break": | |
| 23105 case "continue": | |
| 23106 case "return": | |
| 23107 case "throw": | |
| 23108 break; | |
| 23109 default: | |
| 23110 // Do not display a warning if 'default' is the first statement or if | |
| 23111 // there is a special /* falls through */ comment. | |
| 23112 if (this.cases.length) { | |
| 23113 if (!state.tokens.curr.caseFallsThrough) { | |
| 23114 warning("W086", state.tokens.curr, "default"); | |
| 23115 } | |
| 23116 } | |
| 23117 } | |
| 23118 | |
| 23119 advance("default"); | |
| 23120 g = true; | |
| 23121 advance(":"); | |
| 23122 break; | |
| 23123 case "}": | |
| 23124 if (!noindent) | |
| 23125 indent -= state.option.indent; | |
| 23126 | |
| 23127 advance("}", t); | |
| 23128 state.funct["(breakage)"] -= 1; | |
| 23129 state.funct["(verb)"] = undefined; | |
| 23130 return; | |
| 23131 case "(end)": | |
| 23132 error("E023", state.tokens.next, "}"); | |
| 23133 return; | |
| 23134 default: | |
| 23135 indent += state.option.indent; | |
| 23136 if (g) { | |
| 23137 switch (state.tokens.curr.id) { | |
| 23138 case ",": | |
| 23139 error("E040"); | |
| 23140 return; | |
| 23141 case ":": | |
| 23142 g = false; | |
| 23143 statements(); | |
| 23144 break; | |
| 23145 default: | |
| 23146 error("E025", state.tokens.curr); | |
| 23147 return; | |
| 23148 } | |
| 23149 } else { | |
| 23150 if (state.tokens.curr.id === ":") { | |
| 23151 advance(":"); | |
| 23152 error("E024", state.tokens.curr, ":"); | |
| 23153 statements(); | |
| 23154 } else { | |
| 23155 error("E021", state.tokens.next, "case", state.tokens.next.value); | |
| 23156 return; | |
| 23157 } | |
| 23158 } | |
| 23159 indent -= state.option.indent; | |
| 23160 } | |
| 23161 } | |
| 23162 return this; | |
| 23163 }).labelled = true; | |
| 23164 | |
| 23165 stmt("debugger", function() { | |
| 23166 if (!state.option.debug) { | |
| 23167 warning("W087", this); | |
| 23168 } | |
| 23169 return this; | |
| 23170 }).exps = true; | |
| 23171 | |
| 23172 (function() { | |
| 23173 var x = stmt("do", function() { | |
| 23174 state.funct["(breakage)"] += 1; | |
| 23175 state.funct["(loopage)"] += 1; | |
| 23176 increaseComplexityCount(); | |
| 23177 | |
| 23178 this.first = block(true, true); | |
| 23179 advance("while"); | |
| 23180 var t = state.tokens.next; | |
| 23181 advance("("); | |
| 23182 checkCondAssignment(expression(0)); | |
| 23183 advance(")", t); | |
| 23184 state.funct["(breakage)"] -= 1; | |
| 23185 state.funct["(loopage)"] -= 1; | |
| 23186 return this; | |
| 23187 }); | |
| 23188 x.labelled = true; | |
| 23189 x.exps = true; | |
| 23190 }()); | |
| 23191 | |
| 23192 blockstmt("for", function() { | |
| 23193 var s, t = state.tokens.next; | |
| 23194 var letscope = false; | |
| 23195 var foreachtok = null; | |
| 23196 | |
| 23197 if (t.value === "each") { | |
| 23198 foreachtok = t; | |
| 23199 advance("each"); | |
| 23200 if (!state.inMoz()) { | |
| 23201 warning("W118", state.tokens.curr, "for each"); | |
| 23202 } | |
| 23203 } | |
| 23204 | |
| 23205 increaseComplexityCount(); | |
| 23206 advance("("); | |
| 23207 | |
| 23208 // what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)? | |
| 23209 var nextop; // contains the token of the "in" or "of" operator | |
| 23210 var i = 0; | |
| 23211 var inof = ["in", "of"]; | |
| 23212 var level = 0; // BindingPattern "level" --- level 0 === no BindingPattern | |
| 23213 var comma; // First comma punctuator at level 0 | |
| 23214 var initializer; // First initializer at level 0 | |
| 23215 var bindingPower; | |
| 23216 var targets; | |
| 23217 var target; | |
| 23218 | |
| 23219 // If initial token is a BindingPattern, count it as such. | |
| 23220 if (checkPunctuators(state.tokens.next, ["{", "["])) ++level; | |
| 23221 do { | |
| 23222 nextop = peek(i); | |
| 23223 ++i; | |
| 23224 if (checkPunctuators(nextop, ["{", "["])) ++level; | |
| 23225 else if (checkPunctuators(nextop, ["}", "]"])) --level; | |
| 23226 if (level < 0) break; | |
| 23227 if (level === 0) { | |
| 23228 if (!comma && checkPunctuator(nextop, ",")) comma = nextop; | |
| 23229 else if (!initializer && checkPunctuator(nextop, "=")) initializer = nextop; | |
| 23230 } | |
| 23231 } while (level > 0 || !_.contains(inof, nextop.value) && nextop.value !== ";" && | |
| 23232 nextop.type !== "(end)"); // Is this a JSCS bug? This looks really weird. | |
| 23233 | |
| 23234 // if we're in a for (… in|of …) statement | |
| 23235 if (_.contains(inof, nextop.value)) { | |
| 23236 if (nextop.value === "of") { | |
| 23237 bindingPower = 20; | |
| 23238 if (!state.inES6()) { | |
| 23239 warning("W104", nextop, "for of", "6"); | |
| 23240 } | |
| 23241 } else { | |
| 23242 bindingPower = 0; | |
| 23243 } | |
| 23244 | |
| 23245 if (initializer) { | |
| 23246 error("W133", comma, nextop.value, "initializer is forbidden"); | |
| 23247 } | |
| 23248 | |
| 23249 if (comma) { | |
| 23250 error("W133", comma, nextop.value, "more than one ForBinding"); | |
| 23251 } | |
| 23252 | |
| 23253 if (state.tokens.next.id === "var") { | |
| 23254 advance("var"); | |
| 23255 state.tokens.curr.fud({ prefix: true }); | |
| 23256 } else if (state.tokens.next.id === "let" || state.tokens.next.id === "const") { | |
| 23257 advance(state.tokens.next.id); | |
| 23258 // create a new block scope | |
| 23259 letscope = true; | |
| 23260 state.funct["(scope)"].stack(); | |
| 23261 state.tokens.curr.fud({ prefix: true }); | |
| 23262 } else { | |
| 23263 targets = []; | |
| 23264 | |
| 23265 // The following parsing logic recognizes initializers and the comma | |
| 23266 // operator despite the fact that they are not supported by the | |
| 23267 // grammar. Doing so allows JSHint to emit more a meaningful error | |
| 23268 // message (i.e. W133) in response to a common programming mistake. | |
| 23269 do { | |
| 23270 if (checkPunctuators(state.tokens.next, ["{", "["])) { | |
| 23271 destructuringPattern({ assignment: true }).forEach(function(elem) { | |
| 23272 this.push(elem.token); | |
| 23273 }, targets); | |
| 23274 } else { | |
| 23275 target = expression(120); | |
| 23276 | |
| 23277 if (target.type === "(identifier)") { | |
| 23278 targets.push(target); | |
| 23279 } | |
| 23280 | |
| 23281 checkLeftSideAssign(target, nextop); | |
| 23282 } | |
| 23283 | |
| 23284 if (checkPunctuator(state.tokens.next, "=")) { | |
| 23285 advance("="); | |
| 23286 expression(120); | |
| 23287 } | |
| 23288 | |
| 23289 if (checkPunctuator(state.tokens.next, ",")) { | |
| 23290 advance(","); | |
| 23291 } | |
| 23292 } while (state.tokens.next !== nextop); | |
| 23293 | |
| 23294 // In the event of a syntax error, do no issue warnings regarding the | |
| 23295 // implicit creation of bindings. | |
| 23296 if (!initializer && !comma) { | |
| 23297 targets.forEach(function(token) { | |
| 23298 if (!state.funct["(scope)"].has(token.value)) { | |
| 23299 warning("W088", token, token.value); | |
| 23300 } | |
| 23301 }); | |
| 23302 } | |
| 23303 } | |
| 23304 | |
| 23305 advance(nextop.value); | |
| 23306 // The binding power is variable because for-in statements accept any | |
| 23307 // Expression in this position, while for-of statements are limited to | |
| 23308 // AssignmentExpressions. For example: | |
| 23309 // | |
| 23310 // for ( LeftHandSideExpression in Expression ) Statement | |
| 23311 // for ( LeftHandSideExpression of AssignmentExpression ) Statement | |
| 23312 expression(bindingPower); | |
| 23313 advance(")", t); | |
| 23314 | |
| 23315 if (nextop.value === "in" && state.option.forin) { | |
| 23316 state.forinifcheckneeded = true; | |
| 23317 | |
| 23318 if (state.forinifchecks === undefined) { | |
| 23319 state.forinifchecks = []; | |
| 23320 } | |
| 23321 | |
| 23322 // Push a new for-in-if check onto the stack. The type will be modified | |
| 23323 // when the loop's body is parsed and a suitable if statement exists. | |
| 23324 state.forinifchecks.push({ | |
| 23325 type: "(none)" | |
| 23326 }); | |
| 23327 } | |
| 23328 | |
| 23329 state.funct["(breakage)"] += 1; | |
| 23330 state.funct["(loopage)"] += 1; | |
| 23331 | |
| 23332 s = block(true, true); | |
| 23333 | |
| 23334 if (nextop.value === "in" && state.option.forin) { | |
| 23335 if (state.forinifchecks && state.forinifchecks.length > 0) { | |
| 23336 var check = state.forinifchecks.pop(); | |
| 23337 | |
| 23338 if (// No if statement or not the first statement in loop body | |
| 23339 s && s.length > 0 && (typeof s[0] !== "object" || s[0].value !== "if") || | |
| 23340 // Positive if statement is not the only one in loop body | |
| 23341 check.type === "(positive)" && s.length > 1 || | |
| 23342 // Negative if statement but no continue | |
| 23343 check.type === "(negative)") { | |
| 23344 warning("W089", this); | |
| 23345 } | |
| 23346 } | |
| 23347 | |
| 23348 // Reset the flag in case no if statement was contained in the loop body | |
| 23349 state.forinifcheckneeded = false; | |
| 23350 } | |
| 23351 | |
| 23352 state.funct["(breakage)"] -= 1; | |
| 23353 state.funct["(loopage)"] -= 1; | |
| 23354 } else { | |
| 23355 if (foreachtok) { | |
| 23356 error("E045", foreachtok); | |
| 23357 } | |
| 23358 if (state.tokens.next.id !== ";") { | |
| 23359 if (state.tokens.next.id === "var") { | |
| 23360 advance("var"); | |
| 23361 state.tokens.curr.fud(); | |
| 23362 } else if (state.tokens.next.id === "let") { | |
| 23363 advance("let"); | |
| 23364 // create a new block scope | |
| 23365 letscope = true; | |
| 23366 state.funct["(scope)"].stack(); | |
| 23367 state.tokens.curr.fud(); | |
| 23368 } else { | |
| 23369 for (;;) { | |
| 23370 expression(0, "for"); | |
| 23371 if (state.tokens.next.id !== ",") { | |
| 23372 break; | |
| 23373 } | |
| 23374 parseComma(); | |
| 23375 } | |
| 23376 } | |
| 23377 } | |
| 23378 nolinebreak(state.tokens.curr); | |
| 23379 advance(";"); | |
| 23380 | |
| 23381 // start loopage after the first ; as the next two expressions are executed | |
| 23382 // on every loop | |
| 23383 state.funct["(loopage)"] += 1; | |
| 23384 if (state.tokens.next.id !== ";") { | |
| 23385 checkCondAssignment(expression(0)); | |
| 23386 } | |
| 23387 nolinebreak(state.tokens.curr); | |
| 23388 advance(";"); | |
| 23389 if (state.tokens.next.id === ";") { | |
| 23390 error("E021", state.tokens.next, ")", ";"); | |
| 23391 } | |
| 23392 if (state.tokens.next.id !== ")") { | |
| 23393 for (;;) { | |
| 23394 expression(0, "for"); | |
| 23395 if (state.tokens.next.id !== ",") { | |
| 23396 break; | |
| 23397 } | |
| 23398 parseComma(); | |
| 23399 } | |
| 23400 } | |
| 23401 advance(")", t); | |
| 23402 state.funct["(breakage)"] += 1; | |
| 23403 block(true, true); | |
| 23404 state.funct["(breakage)"] -= 1; | |
| 23405 state.funct["(loopage)"] -= 1; | |
| 23406 | |
| 23407 } | |
| 23408 // unstack loop blockscope | |
| 23409 if (letscope) { | |
| 23410 state.funct["(scope)"].unstack(); | |
| 23411 } | |
| 23412 return this; | |
| 23413 }).labelled = true; | |
| 23414 | |
| 23415 | |
| 23416 stmt("break", function() { | |
| 23417 var v = state.tokens.next.value; | |
| 23418 | |
| 23419 if (!state.option.asi) | |
| 23420 nolinebreak(this); | |
| 23421 | |
| 23422 if (state.tokens.next.id !== ";" && !state.tokens.next.reach && | |
| 23423 state.tokens.curr.line === startLine(state.tokens.next)) { | |
| 23424 if (!state.funct["(scope)"].funct.hasBreakLabel(v)) { | |
| 23425 warning("W090", state.tokens.next, v); | |
| 23426 } | |
| 23427 this.first = state.tokens.next; | |
| 23428 advance(); | |
| 23429 } else { | |
| 23430 if (state.funct["(breakage)"] === 0) | |
| 23431 warning("W052", state.tokens.next, this.value); | |
| 23432 } | |
| 23433 | |
| 23434 reachable(this); | |
| 23435 | |
| 23436 return this; | |
| 23437 }).exps = true; | |
| 23438 | |
| 23439 | |
| 23440 stmt("continue", function() { | |
| 23441 var v = state.tokens.next.value; | |
| 23442 | |
| 23443 if (state.funct["(breakage)"] === 0 || !state.funct["(loopage)"]) { | |
| 23444 warning("W052", state.tokens.next, this.value); | |
| 23445 } | |
| 23446 | |
| 23447 if (!state.option.asi) | |
| 23448 nolinebreak(this); | |
| 23449 | |
| 23450 if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { | |
| 23451 if (state.tokens.curr.line === startLine(state.tokens.next)) { | |
| 23452 if (!state.funct["(scope)"].funct.hasBreakLabel(v)) { | |
| 23453 warning("W090", state.tokens.next, v); | |
| 23454 } | |
| 23455 this.first = state.tokens.next; | |
| 23456 advance(); | |
| 23457 } | |
| 23458 } | |
| 23459 | |
| 23460 reachable(this); | |
| 23461 | |
| 23462 return this; | |
| 23463 }).exps = true; | |
| 23464 | |
| 23465 | |
| 23466 stmt("return", function() { | |
| 23467 if (this.line === startLine(state.tokens.next)) { | |
| 23468 if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { | |
| 23469 this.first = expression(0); | |
| 23470 | |
| 23471 if (this.first && | |
| 23472 this.first.type === "(punctuator)" && this.first.value === "=" && | |
| 23473 !this.first.paren && !state.option.boss) { | |
| 23474 warningAt("W093", this.first.line, this.first.character); | |
| 23475 } | |
| 23476 } | |
| 23477 } else { | |
| 23478 if (state.tokens.next.type === "(punctuator)" && | |
| 23479 ["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) { | |
| 23480 nolinebreak(this); // always warn (Line breaking error) | |
| 23481 } | |
| 23482 } | |
| 23483 | |
| 23484 reachable(this); | |
| 23485 | |
| 23486 return this; | |
| 23487 }).exps = true; | |
| 23488 | |
| 23489 (function(x) { | |
| 23490 x.exps = true; | |
| 23491 x.lbp = 25; | |
| 23492 x.ltBoundary = "after"; | |
| 23493 }(prefix("yield", function() { | |
| 23494 if (state.inMoz()) { | |
| 23495 return mozYield.call(this); | |
| 23496 } | |
| 23497 var prev = state.tokens.prev; | |
| 23498 | |
| 23499 if (!this.beginsStmt && prev.lbp > 30 && !checkPunctuators(prev, ["("])) { | |
| 23500 error("E061", this); | |
| 23501 } | |
| 23502 | |
| 23503 if (state.inES6(true) && !state.funct["(generator)"]) { | |
| 23504 // If it's a yield within a catch clause inside a generator then that's ok | |
| 23505 if (!("(catch)" === state.funct["(name)"] && state.funct["(context)"]["(generator)"])) { | |
| 23506 error("E046", state.tokens.curr, "yield"); | |
| 23507 } | |
| 23508 } else if (!state.inES6()) { | |
| 23509 warning("W104", state.tokens.curr, "yield", "6"); | |
| 23510 } | |
| 23511 state.funct["(generator)"] = "yielded"; | |
| 23512 var delegatingYield = false; | |
| 23513 | |
| 23514 if (state.tokens.next.value === "*") { | |
| 23515 delegatingYield = true; | |
| 23516 advance("*"); | |
| 23517 } | |
| 23518 | |
| 23519 // Parse operand | |
| 23520 if (!isEndOfExpr() && state.tokens.next.id !== ",") { | |
| 23521 if (state.tokens.next.nud) { | |
| 23522 | |
| 23523 nobreaknonadjacent(state.tokens.curr, state.tokens.next); | |
| 23524 this.first = expression(10); | |
| 23525 | |
| 23526 if (this.first.type === "(punctuator)" && this.first.value === "=" && | |
| 23527 !this.first.paren && !state.option.boss) { | |
| 23528 warningAt("W093", this.first.line, this.first.character); | |
| 23529 } | |
| 23530 } else if (state.tokens.next.led) { | |
| 23531 if (state.tokens.next.id !== ",") { | |
| 23532 error("W017", state.tokens.next); | |
| 23533 } | |
| 23534 } | |
| 23535 } | |
| 23536 | |
| 23537 return this; | |
| 23538 }))); | |
| 23539 | |
| 23540 /** | |
| 23541 * Parsing logic for non-standard Mozilla implementation of `yield` | |
| 23542 * expressions. | |
| 23543 */ | |
| 23544 var mozYield = function() { | |
| 23545 var prev = state.tokens.prev; | |
| 23546 if (state.inES6(true) && !state.funct["(generator)"]) { | |
| 23547 // If it's a yield within a catch clause inside a generator then that's ok | |
| 23548 if (!("(catch)" === state.funct["(name)"] && state.funct["(context)"]["(generator)"])) { | |
| 23549 error("E046", state.tokens.curr, "yield"); | |
| 23550 } | |
| 23551 } | |
| 23552 state.funct["(generator)"] = "yielded"; | |
| 23553 var delegatingYield = false; | |
| 23554 | |
| 23555 if (state.tokens.next.value === "*") { | |
| 23556 delegatingYield = true; | |
| 23557 advance("*"); | |
| 23558 } | |
| 23559 | |
| 23560 if (this.line === startLine(state.tokens.next)) { | |
| 23561 if (delegatingYield || | |
| 23562 (state.tokens.next.id !== ";" && !state.option.asi && | |
| 23563 !state.tokens.next.reach && state.tokens.next.nud)) { | |
| 23564 | |
| 23565 nobreaknonadjacent(state.tokens.curr, state.tokens.next); | |
| 23566 this.first = expression(10); | |
| 23567 | |
| 23568 if (this.first.type === "(punctuator)" && this.first.value === "=" && | |
| 23569 !this.first.paren && !state.option.boss) { | |
| 23570 warningAt("W093", this.first.line, this.first.character); | |
| 23571 } | |
| 23572 } | |
| 23573 | |
| 23574 if (state.tokens.next.id !== ")" && | |
| 23575 (prev.lbp > 30 || (!prev.assign && !isEndOfExpr()) || prev.id === "yield")) { | |
| 23576 error("E050", this); | |
| 23577 } | |
| 23578 } else if (!state.option.asi) { | |
| 23579 nolinebreak(this); // always warn (Line breaking error) | |
| 23580 } | |
| 23581 return this; | |
| 23582 }; | |
| 23583 | |
| 23584 stmt("throw", function() { | |
| 23585 nolinebreak(this); | |
| 23586 this.first = expression(20); | |
| 23587 | |
| 23588 reachable(this); | |
| 23589 | |
| 23590 return this; | |
| 23591 }).exps = true; | |
| 23592 | |
| 23593 stmt("import", function() { | |
| 23594 if (!state.funct["(scope)"].block.isGlobal()) { | |
| 23595 error("E053", state.tokens.curr, "Import"); | |
| 23596 } | |
| 23597 | |
| 23598 if (!state.inES6()) { | |
| 23599 warning("W119", state.tokens.curr, "import", "6"); | |
| 23600 } | |
| 23601 | |
| 23602 if (state.tokens.next.type === "(string)") { | |
| 23603 // ModuleSpecifier :: StringLiteral | |
| 23604 advance("(string)"); | |
| 23605 return this; | |
| 23606 } | |
| 23607 | |
| 23608 if (state.tokens.next.identifier) { | |
| 23609 // ImportClause :: ImportedDefaultBinding | |
| 23610 this.name = identifier(); | |
| 23611 // Import bindings are immutable (see ES6 8.1.1.5.5) | |
| 23612 state.funct["(scope)"].addlabel(this.name, { | |
| 23613 type: "import", | |
| 23614 initialized: true, | |
| 23615 token: state.tokens.curr }); | |
| 23616 | |
| 23617 if (state.tokens.next.value === ",") { | |
| 23618 // ImportClause :: ImportedDefaultBinding , NameSpaceImport | |
| 23619 // ImportClause :: ImportedDefaultBinding , NamedImports | |
| 23620 advance(","); | |
| 23621 // At this point, we intentionally fall through to continue matching | |
| 23622 // either NameSpaceImport or NamedImports. | |
| 23623 // Discussion: | |
| 23624 // https://github.com/jshint/jshint/pull/2144#discussion_r23978406 | |
| 23625 } else { | |
| 23626 advance("from"); | |
| 23627 advance("(string)"); | |
| 23628 return this; | |
| 23629 } | |
| 23630 } | |
| 23631 | |
| 23632 if (state.tokens.next.id === "*") { | |
| 23633 // ImportClause :: NameSpaceImport | |
| 23634 advance("*"); | |
| 23635 advance("as"); | |
| 23636 if (state.tokens.next.identifier) { | |
| 23637 this.name = identifier(); | |
| 23638 // Import bindings are immutable (see ES6 8.1.1.5.5) | |
| 23639 state.funct["(scope)"].addlabel(this.name, { | |
| 23640 type: "import", | |
| 23641 initialized: true, | |
| 23642 token: state.tokens.curr }); | |
| 23643 } | |
| 23644 } else { | |
| 23645 // ImportClause :: NamedImports | |
| 23646 advance("{"); | |
| 23647 for (;;) { | |
| 23648 if (state.tokens.next.value === "}") { | |
| 23649 advance("}"); | |
| 23650 break; | |
| 23651 } | |
| 23652 var importName; | |
| 23653 if (state.tokens.next.type === "default") { | |
| 23654 importName = "default"; | |
| 23655 advance("default"); | |
| 23656 } else { | |
| 23657 importName = identifier(); | |
| 23658 } | |
| 23659 if (state.tokens.next.value === "as") { | |
| 23660 advance("as"); | |
| 23661 importName = identifier(); | |
| 23662 } | |
| 23663 | |
| 23664 // Import bindings are immutable (see ES6 8.1.1.5.5) | |
| 23665 state.funct["(scope)"].addlabel(importName, { | |
| 23666 type: "import", | |
| 23667 initialized: true, | |
| 23668 token: state.tokens.curr }); | |
| 23669 | |
| 23670 if (state.tokens.next.value === ",") { | |
| 23671 advance(","); | |
| 23672 } else if (state.tokens.next.value === "}") { | |
| 23673 advance("}"); | |
| 23674 break; | |
| 23675 } else { | |
| 23676 error("E024", state.tokens.next, state.tokens.next.value); | |
| 23677 break; | |
| 23678 } | |
| 23679 } | |
| 23680 } | |
| 23681 | |
| 23682 // FromClause | |
| 23683 advance("from"); | |
| 23684 advance("(string)"); | |
| 23685 return this; | |
| 23686 }).exps = true; | |
| 23687 | |
| 23688 stmt("export", function() { | |
| 23689 var ok = true; | |
| 23690 var token; | |
| 23691 var identifier; | |
| 23692 | |
| 23693 if (!state.inES6()) { | |
| 23694 warning("W119", state.tokens.curr, "export", "6"); | |
| 23695 ok = false; | |
| 23696 } | |
| 23697 | |
| 23698 if (!state.funct["(scope)"].block.isGlobal()) { | |
| 23699 error("E053", state.tokens.curr, "Export"); | |
| 23700 ok = false; | |
| 23701 } | |
| 23702 | |
| 23703 if (state.tokens.next.value === "*") { | |
| 23704 // ExportDeclaration :: export * FromClause | |
| 23705 advance("*"); | |
| 23706 advance("from"); | |
| 23707 advance("(string)"); | |
| 23708 return this; | |
| 23709 } | |
| 23710 | |
| 23711 if (state.tokens.next.type === "default") { | |
| 23712 // ExportDeclaration :: | |
| 23713 // export default [lookahead ∉ { function, class }] AssignmentExpression[In] ; | |
| 23714 // export default HoistableDeclaration | |
| 23715 // export default ClassDeclaration | |
| 23716 state.nameStack.set(state.tokens.next); | |
| 23717 advance("default"); | |
| 23718 var exportType = state.tokens.next.id; | |
| 23719 if (exportType === "function" || exportType === "class") { | |
| 23720 this.block = true; | |
| 23721 } | |
| 23722 | |
| 23723 token = peek(); | |
| 23724 | |
| 23725 expression(10); | |
| 23726 | |
| 23727 identifier = token.value; | |
| 23728 | |
| 23729 if (this.block) { | |
| 23730 state.funct["(scope)"].addlabel(identifier, { | |
| 23731 type: exportType, | |
| 23732 initialized: true, | |
| 23733 token: token }); | |
| 23734 | |
| 23735 state.funct["(scope)"].setExported(identifier, token); | |
| 23736 } | |
| 23737 | |
| 23738 return this; | |
| 23739 } | |
| 23740 | |
| 23741 if (state.tokens.next.value === "{") { | |
| 23742 // ExportDeclaration :: export ExportClause | |
| 23743 advance("{"); | |
| 23744 var exportedTokens = []; | |
| 23745 for (;;) { | |
| 23746 if (!state.tokens.next.identifier) { | |
| 23747 error("E030", state.tokens.next, state.tokens.next.value); | |
| 23748 } | |
| 23749 advance(); | |
| 23750 | |
| 23751 exportedTokens.push(state.tokens.curr); | |
| 23752 | |
| 23753 if (state.tokens.next.value === "as") { | |
| 23754 advance("as"); | |
| 23755 if (!state.tokens.next.identifier) { | |
| 23756 error("E030", state.tokens.next, state.tokens.next.value); | |
| 23757 } | |
| 23758 advance(); | |
| 23759 } | |
| 23760 | |
| 23761 if (state.tokens.next.value === ",") { | |
| 23762 advance(","); | |
| 23763 } else if (state.tokens.next.value === "}") { | |
| 23764 advance("}"); | |
| 23765 break; | |
| 23766 } else { | |
| 23767 error("E024", state.tokens.next, state.tokens.next.value); | |
| 23768 break; | |
| 23769 } | |
| 23770 } | |
| 23771 if (state.tokens.next.value === "from") { | |
| 23772 // ExportDeclaration :: export ExportClause FromClause | |
| 23773 advance("from"); | |
| 23774 advance("(string)"); | |
| 23775 } else if (ok) { | |
| 23776 exportedTokens.forEach(function(token) { | |
| 23777 state.funct["(scope)"].setExported(token.value, token); | |
| 23778 }); | |
| 23779 } | |
| 23780 return this; | |
| 23781 } | |
| 23782 | |
| 23783 if (state.tokens.next.id === "var") { | |
| 23784 // ExportDeclaration :: export VariableStatement | |
| 23785 advance("var"); | |
| 23786 state.tokens.curr.fud({ inexport:true }); | |
| 23787 } else if (state.tokens.next.id === "let") { | |
| 23788 // ExportDeclaration :: export VariableStatement | |
| 23789 advance("let"); | |
| 23790 state.tokens.curr.fud({ inexport:true }); | |
| 23791 } else if (state.tokens.next.id === "const") { | |
| 23792 // ExportDeclaration :: export VariableStatement | |
| 23793 advance("const"); | |
| 23794 state.tokens.curr.fud({ inexport:true }); | |
| 23795 } else if (state.tokens.next.id === "function") { | |
| 23796 // ExportDeclaration :: export Declaration | |
| 23797 this.block = true; | |
| 23798 advance("function"); | |
| 23799 state.syntax["function"].fud({ inexport:true }); | |
| 23800 } else if (state.tokens.next.id === "class") { | |
| 23801 // ExportDeclaration :: export Declaration | |
| 23802 this.block = true; | |
| 23803 advance("class"); | |
| 23804 var classNameToken = state.tokens.next; | |
| 23805 state.syntax["class"].fud(); | |
| 23806 state.funct["(scope)"].setExported(classNameToken.value, classNameToken); | |
| 23807 } else { | |
| 23808 error("E024", state.tokens.next, state.tokens.next.value); | |
| 23809 } | |
| 23810 | |
| 23811 return this; | |
| 23812 }).exps = true; | |
| 23813 | |
| 23814 // Future Reserved Words | |
| 23815 | |
| 23816 FutureReservedWord("abstract"); | |
| 23817 FutureReservedWord("await", { es5: true, moduleOnly: true }); | |
| 23818 FutureReservedWord("boolean"); | |
| 23819 FutureReservedWord("byte"); | |
| 23820 FutureReservedWord("char"); | |
| 23821 FutureReservedWord("class", { es5: true, nud: classdef }); | |
| 23822 FutureReservedWord("double"); | |
| 23823 FutureReservedWord("enum", { es5: true }); | |
| 23824 FutureReservedWord("export", { es5: true }); | |
| 23825 FutureReservedWord("extends", { es5: true }); | |
| 23826 FutureReservedWord("final"); | |
| 23827 FutureReservedWord("float"); | |
| 23828 FutureReservedWord("goto"); | |
| 23829 FutureReservedWord("implements", { es5: true, strictOnly: true }); | |
| 23830 FutureReservedWord("import", { es5: true }); | |
| 23831 FutureReservedWord("int"); | |
| 23832 FutureReservedWord("interface", { es5: true, strictOnly: true }); | |
| 23833 FutureReservedWord("long"); | |
| 23834 FutureReservedWord("native"); | |
| 23835 FutureReservedWord("package", { es5: true, strictOnly: true }); | |
| 23836 FutureReservedWord("private", { es5: true, strictOnly: true }); | |
| 23837 FutureReservedWord("protected", { es5: true, strictOnly: true }); | |
| 23838 FutureReservedWord("public", { es5: true, strictOnly: true }); | |
| 23839 FutureReservedWord("short"); | |
| 23840 FutureReservedWord("static", { es5: true, strictOnly: true }); | |
| 23841 FutureReservedWord("super", { es5: true }); | |
| 23842 FutureReservedWord("synchronized"); | |
| 23843 FutureReservedWord("transient"); | |
| 23844 FutureReservedWord("volatile"); | |
| 23845 | |
| 23846 // this function is used to determine whether a squarebracket or a curlybracket | |
| 23847 // expression is a comprehension array, destructuring assignment or a json value. | |
| 23848 | |
| 23849 var lookupBlockType = function() { | |
| 23850 var pn, pn1, prev; | |
| 23851 var i = -1; | |
| 23852 var bracketStack = 0; | |
| 23853 var ret = {}; | |
| 23854 if (checkPunctuators(state.tokens.curr, ["[", "{"])) { | |
| 23855 bracketStack += 1; | |
| 23856 } | |
| 23857 do { | |
| 23858 prev = i === -1 ? state.tokens.curr : pn; | |
| 23859 pn = i === -1 ? state.tokens.next : peek(i); | |
| 23860 pn1 = peek(i + 1); | |
| 23861 i = i + 1; | |
| 23862 if (checkPunctuators(pn, ["[", "{"])) { | |
| 23863 bracketStack += 1; | |
| 23864 } else if (checkPunctuators(pn, ["]", "}"])) { | |
| 23865 bracketStack -= 1; | |
| 23866 } | |
| 23867 if (bracketStack === 1 && pn.identifier && pn.value === "for" && | |
| 23868 !checkPunctuator(prev, ".")) { | |
| 23869 ret.isCompArray = true; | |
| 23870 ret.notJson = true; | |
| 23871 break; | |
| 23872 } | |
| 23873 if (bracketStack === 0 && checkPunctuators(pn, ["}", "]"])) { | |
| 23874 if (pn1.value === "=") { | |
| 23875 ret.isDestAssign = true; | |
| 23876 ret.notJson = true; | |
| 23877 break; | |
| 23878 } else if (pn1.value === ".") { | |
| 23879 ret.notJson = true; | |
| 23880 break; | |
| 23881 } | |
| 23882 } | |
| 23883 if (checkPunctuator(pn, ";")) { | |
| 23884 ret.isBlock = true; | |
| 23885 ret.notJson = true; | |
| 23886 } | |
| 23887 } while (bracketStack > 0 && pn.id !== "(end)"); | |
| 23888 return ret; | |
| 23889 }; | |
| 23890 | |
| 23891 function saveProperty(props, name, tkn, isClass, isStatic) { | |
| 23892 var msg = ["key", "class method", "static class method"]; | |
| 23893 msg = msg[(isClass || false) + (isStatic || false)]; | |
| 23894 if (tkn.identifier) { | |
| 23895 name = tkn.value; | |
| 23896 } | |
| 23897 | |
| 23898 if (props[name] && name !== "__proto__") { | |
| 23899 warning("W075", state.tokens.next, msg, name); | |
| 23900 } else { | |
| 23901 props[name] = Object.create(null); | |
| 23902 } | |
| 23903 | |
| 23904 props[name].basic = true; | |
| 23905 props[name].basictkn = tkn; | |
| 23906 } | |
| 23907 | |
| 23908 /** | |
| 23909 * @param {string} accessorType - Either "get" or "set" | |
| 23910 * @param {object} props - a collection of all properties of the object to | |
| 23911 * which the current accessor is being assigned | |
| 23912 * @param {object} tkn - the identifier token representing the accessor name | |
| 23913 * @param {boolean} isClass - whether the accessor is part of an ES6 Class | |
| 23914 * definition | |
| 23915 * @param {boolean} isStatic - whether the accessor is a static method | |
| 23916 */ | |
| 23917 function saveAccessor(accessorType, props, name, tkn, isClass, isStatic) { | |
| 23918 var flagName = accessorType === "get" ? "getterToken" : "setterToken"; | |
| 23919 var msg = ""; | |
| 23920 | |
| 23921 if (isClass) { | |
| 23922 if (isStatic) { | |
| 23923 msg += "static "; | |
| 23924 } | |
| 23925 msg += accessorType + "ter method"; | |
| 23926 } else { | |
| 23927 msg = "key"; | |
| 23928 } | |
| 23929 | |
| 23930 state.tokens.curr.accessorType = accessorType; | |
| 23931 state.nameStack.set(tkn); | |
| 23932 | |
| 23933 if (props[name]) { | |
| 23934 if ((props[name].basic || props[name][flagName]) && name !== "__proto__") { | |
| 23935 warning("W075", state.tokens.next, msg, name); | |
| 23936 } | |
| 23937 } else { | |
| 23938 props[name] = Object.create(null); | |
| 23939 } | |
| 23940 | |
| 23941 props[name][flagName] = tkn; | |
| 23942 } | |
| 23943 | |
| 23944 function computedPropertyName() { | |
| 23945 advance("["); | |
| 23946 if (!state.inES6()) { | |
| 23947 warning("W119", state.tokens.curr, "computed property names", "6"); | |
| 23948 } | |
| 23949 var value = expression(10); | |
| 23950 advance("]"); | |
| 23951 return value; | |
| 23952 } | |
| 23953 | |
| 23954 /** | |
| 23955 * Test whether a given token is a punctuator matching one of the specified values | |
| 23956 * @param {Token} token | |
| 23957 * @param {Array.<string>} values | |
| 23958 * @returns {boolean} | |
| 23959 */ | |
| 23960 function checkPunctuators(token, values) { | |
| 23961 if (token.type === "(punctuator)") { | |
| 23962 return _.contains(values, token.value); | |
| 23963 } | |
| 23964 return false; | |
| 23965 } | |
| 23966 | |
| 23967 /** | |
| 23968 * Test whether a given token is a punctuator matching the specified value | |
| 23969 * @param {Token} token | |
| 23970 * @param {string} value | |
| 23971 * @returns {boolean} | |
| 23972 */ | |
| 23973 function checkPunctuator(token, value) { | |
| 23974 return token.type === "(punctuator)" && token.value === value; | |
| 23975 } | |
| 23976 | |
| 23977 // Check whether this function has been reached for a destructuring assign with undeclared values | |
| 23978 function destructuringAssignOrJsonValue() { | |
| 23979 // lookup for the assignment (ECMAScript 6 only) | |
| 23980 // if it has semicolons, it is a block, so go parse it as a block | |
| 23981 // or it's not a block, but there are assignments, check for undeclared variables | |
| 23982 | |
| 23983 var block = lookupBlockType(); | |
| 23984 if (block.notJson) { | |
| 23985 if (!state.inES6() && block.isDestAssign) { | |
| 23986 warning("W104", state.tokens.curr, "destructuring assignment", "6"); | |
| 23987 } | |
| 23988 statements(); | |
| 23989 // otherwise parse json value | |
| 23990 } else { | |
| 23991 state.option.laxbreak = true; | |
| 23992 state.jsonMode = true; | |
| 23993 jsonValue(); | |
| 23994 } | |
| 23995 } | |
| 23996 | |
| 23997 // array comprehension parsing function | |
| 23998 // parses and defines the three states of the list comprehension in order | |
| 23999 // to avoid defining global variables, but keeping them to the list comprehension scope | |
| 24000 // only. The order of the states are as follows: | |
| 24001 // * "use" which will be the returned iterative part of the list comprehension | |
| 24002 // * "define" which will define the variables local to the list comprehension | |
| 24003 // * "filter" which will help filter out values | |
| 24004 | |
| 24005 var arrayComprehension = function() { | |
| 24006 var CompArray = function() { | |
| 24007 this.mode = "use"; | |
| 24008 this.variables = []; | |
| 24009 }; | |
| 24010 var _carrays = []; | |
| 24011 var _current; | |
| 24012 function declare(v) { | |
| 24013 var l = _current.variables.filter(function(elt) { | |
| 24014 // if it has, change its undef state | |
| 24015 if (elt.value === v) { | |
| 24016 elt.undef = false; | |
| 24017 return v; | |
| 24018 } | |
| 24019 }).length; | |
| 24020 return l !== 0; | |
| 24021 } | |
| 24022 function use(v) { | |
| 24023 var l = _current.variables.filter(function(elt) { | |
| 24024 // and if it has been defined | |
| 24025 if (elt.value === v && !elt.undef) { | |
| 24026 if (elt.unused === true) { | |
| 24027 elt.unused = false; | |
| 24028 } | |
| 24029 return v; | |
| 24030 } | |
| 24031 }).length; | |
| 24032 // otherwise we warn about it | |
| 24033 return (l === 0); | |
| 24034 } | |
| 24035 return { stack: function() { | |
| 24036 _current = new CompArray(); | |
| 24037 _carrays.push(_current); | |
| 24038 }, | |
| 24039 unstack: function() { | |
| 24040 _current.variables.filter(function(v) { | |
| 24041 if (v.unused) | |
| 24042 warning("W098", v.token, v.raw_text || v.value); | |
| 24043 if (v.undef) | |
| 24044 state.funct["(scope)"].block.use(v.value, v.token); | |
| 24045 }); | |
| 24046 _carrays.splice(-1, 1); | |
| 24047 _current = _carrays[_carrays.length - 1]; | |
| 24048 }, | |
| 24049 setState: function(s) { | |
| 24050 if (_.contains(["use", "define", "generate", "filter"], s)) | |
| 24051 _current.mode = s; | |
| 24052 }, | |
| 24053 check: function(v) { | |
| 24054 if (!_current) { | |
| 24055 return; | |
| 24056 } | |
| 24057 // When we are in "use" state of the list comp, we enqueue that var | |
| 24058 if (_current && _current.mode === "use") { | |
| 24059 if (use(v)) { | |
| 24060 _current.variables.push({ | |
| 24061 funct: state.funct, | |
| 24062 token: state.tokens.curr, | |
| 24063 value: v, | |
| 24064 undef: true, | |
| 24065 unused: false | |
| 24066 }); | |
| 24067 } | |
| 24068 return true; | |
| 24069 // When we are in "define" state of the list comp, | |
| 24070 } else if (_current && _current.mode === "define") { | |
| 24071 // check if the variable has been used previously | |
| 24072 if (!declare(v)) { | |
| 24073 _current.variables.push({ | |
| 24074 funct: state.funct, | |
| 24075 token: state.tokens.curr, | |
| 24076 value: v, | |
| 24077 undef: false, | |
| 24078 unused: true | |
| 24079 }); | |
| 24080 } | |
| 24081 return true; | |
| 24082 // When we are in the "generate" state of the list comp, | |
| 24083 } else if (_current && _current.mode === "generate") { | |
| 24084 state.funct["(scope)"].block.use(v, state.tokens.curr); | |
| 24085 return true; | |
| 24086 // When we are in "filter" state, | |
| 24087 } else if (_current && _current.mode === "filter") { | |
| 24088 // we check whether current variable has been declared | |
| 24089 if (use(v)) { | |
| 24090 // if not we warn about it | |
| 24091 state.funct["(scope)"].block.use(v, state.tokens.curr); | |
| 24092 } | |
| 24093 return true; | |
| 24094 } | |
| 24095 return false; | |
| 24096 } | |
| 24097 }; | |
| 24098 }; | |
| 24099 | |
| 24100 | |
| 24101 // Parse JSON | |
| 24102 | |
| 24103 function jsonValue() { | |
| 24104 function jsonObject() { | |
| 24105 var o = {}, t = state.tokens.next; | |
| 24106 advance("{"); | |
| 24107 if (state.tokens.next.id !== "}") { | |
| 24108 for (;;) { | |
| 24109 if (state.tokens.next.id === "(end)") { | |
| 24110 error("E026", state.tokens.next, t.line); | |
| 24111 } else if (state.tokens.next.id === "}") { | |
| 24112 warning("W094", state.tokens.curr); | |
| 24113 break; | |
| 24114 } else if (state.tokens.next.id === ",") { | |
| 24115 error("E028", state.tokens.next); | |
| 24116 } else if (state.tokens.next.id !== "(string)") { | |
| 24117 warning("W095", state.tokens.next, state.tokens.next.value); | |
| 24118 } | |
| 24119 if (o[state.tokens.next.value] === true) { | |
| 24120 warning("W075", state.tokens.next, "key", state.tokens.next.value); | |
| 24121 } else if ((state.tokens.next.value === "__proto__" && | |
| 24122 !state.option.proto) || (state.tokens.next.value === "__iterator__" && | |
| 24123 !state.option.iterator)) { | |
| 24124 warning("W096", state.tokens.next, state.tokens.next.value); | |
| 24125 } else { | |
| 24126 o[state.tokens.next.value] = true; | |
| 24127 } | |
| 24128 advance(); | |
| 24129 advance(":"); | |
| 24130 jsonValue(); | |
| 24131 if (state.tokens.next.id !== ",") { | |
| 24132 break; | |
| 24133 } | |
| 24134 advance(","); | |
| 24135 } | |
| 24136 } | |
| 24137 advance("}"); | |
| 24138 } | |
| 24139 | |
| 24140 function jsonArray() { | |
| 24141 var t = state.tokens.next; | |
| 24142 advance("["); | |
| 24143 if (state.tokens.next.id !== "]") { | |
| 24144 for (;;) { | |
| 24145 if (state.tokens.next.id === "(end)") { | |
| 24146 error("E027", state.tokens.next, t.line); | |
| 24147 } else if (state.tokens.next.id === "]") { | |
| 24148 warning("W094", state.tokens.curr); | |
| 24149 break; | |
| 24150 } else if (state.tokens.next.id === ",") { | |
| 24151 error("E028", state.tokens.next); | |
| 24152 } | |
| 24153 jsonValue(); | |
| 24154 if (state.tokens.next.id !== ",") { | |
| 24155 break; | |
| 24156 } | |
| 24157 advance(","); | |
| 24158 } | |
| 24159 } | |
| 24160 advance("]"); | |
| 24161 } | |
| 24162 | |
| 24163 switch (state.tokens.next.id) { | |
| 24164 case "{": | |
| 24165 jsonObject(); | |
| 24166 break; | |
| 24167 case "[": | |
| 24168 jsonArray(); | |
| 24169 break; | |
| 24170 case "true": | |
| 24171 case "false": | |
| 24172 case "null": | |
| 24173 case "(number)": | |
| 24174 case "(string)": | |
| 24175 advance(); | |
| 24176 break; | |
| 24177 case "-": | |
| 24178 advance("-"); | |
| 24179 advance("(number)"); | |
| 24180 break; | |
| 24181 default: | |
| 24182 error("E003", state.tokens.next); | |
| 24183 } | |
| 24184 } | |
| 24185 | |
| 24186 /** | |
| 24187 * Lint dynamically-evaluated code, appending any resulting errors/warnings | |
| 24188 * into the global `errors` array. | |
| 24189 * | |
| 24190 * @param {array} internals - collection of "internals" objects describing | |
| 24191 * string tokens that contain evaluated code | |
| 24192 * @param {object} options - linting options to apply | |
| 24193 * @param {object} globals - globally-defined bindings for the evaluated code | |
| 24194 */ | |
| 24195 function lintEvalCode(internals, options, globals) { | |
| 24196 var priorErrorCount, idx, jdx, internal; | |
| 24197 | |
| 24198 for (idx = 0; idx < internals.length; idx += 1) { | |
| 24199 internal = internals[idx]; | |
| 24200 options.scope = internal.elem; | |
| 24201 priorErrorCount = JSHINT.errors.length; | |
| 24202 | |
| 24203 itself(internal.code, options, globals); | |
| 24204 | |
| 24205 for (jdx = priorErrorCount; jdx < JSHINT.errors.length; jdx += 1) { | |
| 24206 JSHINT.errors[jdx].line += internal.token.line - 1; | |
| 24207 } | |
| 24208 } | |
| 24209 } | |
| 24210 | |
| 24211 var escapeRegex = function(str) { | |
| 24212 return str.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&"); | |
| 24213 }; | |
| 24214 | |
| 24215 // The actual JSHINT function itself. | |
| 24216 var itself = function(s, o, g) { | |
| 24217 var x, reIgnoreStr, reIgnore; | |
| 24218 var optionKeys; | |
| 24219 var newOptionObj = {}; | |
| 24220 var newIgnoredObj = {}; | |
| 24221 | |
| 24222 o = _.clone(o); | |
| 24223 state.reset(); | |
| 24224 | |
| 24225 if (o && o.scope) { | |
| 24226 JSHINT.scope = o.scope; | |
| 24227 } else { | |
| 24228 JSHINT.errors = []; | |
| 24229 JSHINT.undefs = []; | |
| 24230 JSHINT.internals = []; | |
| 24231 JSHINT.blacklist = {}; | |
| 24232 JSHINT.scope = "(main)"; | |
| 24233 } | |
| 24234 | |
| 24235 predefined = Object.create(null); | |
| 24236 combine(predefined, vars.ecmaIdentifiers[3]); | |
| 24237 combine(predefined, vars.reservedVars); | |
| 24238 | |
| 24239 combine(predefined, g || {}); | |
| 24240 | |
| 24241 declared = Object.create(null); | |
| 24242 var exported = Object.create(null); // Variables that live outside the current file | |
| 24243 | |
| 24244 function each(obj, cb) { | |
| 24245 if (!obj) | |
| 24246 return; | |
| 24247 | |
| 24248 if (!Array.isArray(obj) && typeof obj === "object") | |
| 24249 obj = Object.keys(obj); | |
| 24250 | |
| 24251 obj.forEach(cb); | |
| 24252 } | |
| 24253 | |
| 24254 if (o) { | |
| 24255 each(o.predef || null, function(item) { | |
| 24256 var slice, prop; | |
| 24257 | |
| 24258 if (item[0] === "-") { | |
| 24259 slice = item.slice(1); | |
| 24260 JSHINT.blacklist[slice] = slice; | |
| 24261 // remove from predefined if there | |
| 24262 delete predefined[slice]; | |
| 24263 } else { | |
| 24264 prop = Object.getOwnPropertyDescriptor(o.predef, item); | |
| 24265 predefined[item] = prop ? prop.value : false; | |
| 24266 } | |
| 24267 }); | |
| 24268 | |
| 24269 each(o.exported || null, function(item) { | |
| 24270 exported[item] = true; | |
| 24271 }); | |
| 24272 | |
| 24273 delete o.predef; | |
| 24274 delete o.exported; | |
| 24275 | |
| 24276 optionKeys = Object.keys(o); | |
| 24277 for (x = 0; x < optionKeys.length; x++) { | |
| 24278 if (/^-W\d{3}$/g.test(optionKeys[x])) { | |
| 24279 newIgnoredObj[optionKeys[x].slice(1)] = true; | |
| 24280 } else { | |
| 24281 var optionKey = optionKeys[x]; | |
| 24282 newOptionObj[optionKey] = o[optionKey]; | |
| 24283 } | |
| 24284 } | |
| 24285 } | |
| 24286 | |
| 24287 state.option = newOptionObj; | |
| 24288 state.ignored = newIgnoredObj; | |
| 24289 | |
| 24290 state.option.indent = state.option.indent || 4; | |
| 24291 state.option.maxerr = state.option.maxerr || 50; | |
| 24292 | |
| 24293 indent = 1; | |
| 24294 | |
| 24295 var scopeManagerInst = scopeManager(state, predefined, exported, declared); | |
| 24296 scopeManagerInst.on("warning", function(ev) { | |
| 24297 warning.apply(null, [ ev.code, ev.token].concat(ev.data)); | |
| 24298 }); | |
| 24299 | |
| 24300 scopeManagerInst.on("error", function(ev) { | |
| 24301 error.apply(null, [ ev.code, ev.token ].concat(ev.data)); | |
| 24302 }); | |
| 24303 | |
| 24304 state.funct = functor("(global)", null, { | |
| 24305 "(global)" : true, | |
| 24306 "(scope)" : scopeManagerInst, | |
| 24307 "(comparray)" : arrayComprehension(), | |
| 24308 "(metrics)" : createMetrics(state.tokens.next) | |
| 24309 }); | |
| 24310 | |
| 24311 functions = [state.funct]; | |
| 24312 urls = []; | |
| 24313 stack = null; | |
| 24314 member = {}; | |
| 24315 membersOnly = null; | |
| 24316 inblock = false; | |
| 24317 lookahead = []; | |
| 24318 | |
| 24319 if (!isString(s) && !Array.isArray(s)) { | |
| 24320 errorAt("E004", 0); | |
| 24321 return false; | |
| 24322 } | |
| 24323 | |
| 24324 api = { | |
| 24325 get isJSON() { | |
| 24326 return state.jsonMode; | |
| 24327 }, | |
| 24328 | |
| 24329 getOption: function(name) { | |
| 24330 return state.option[name] || null; | |
| 24331 }, | |
| 24332 | |
| 24333 getCache: function(name) { | |
| 24334 return state.cache[name]; | |
| 24335 }, | |
| 24336 | |
| 24337 setCache: function(name, value) { | |
| 24338 state.cache[name] = value; | |
| 24339 }, | |
| 24340 | |
| 24341 warn: function(code, data) { | |
| 24342 warningAt.apply(null, [ code, data.line, data.char ].concat(data.data)); | |
| 24343 }, | |
| 24344 | |
| 24345 on: function(names, listener) { | |
| 24346 names.split(" ").forEach(function(name) { | |
| 24347 emitter.on(name, listener); | |
| 24348 }.bind(this)); | |
| 24349 } | |
| 24350 }; | |
| 24351 | |
| 24352 emitter.removeAllListeners(); | |
| 24353 (extraModules || []).forEach(function(func) { | |
| 24354 func(api); | |
| 24355 }); | |
| 24356 | |
| 24357 state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"]; | |
| 24358 | |
| 24359 if (o && o.ignoreDelimiters) { | |
| 24360 | |
| 24361 if (!Array.isArray(o.ignoreDelimiters)) { | |
| 24362 o.ignoreDelimiters = [o.ignoreDelimiters]; | |
| 24363 } | |
| 24364 | |
| 24365 o.ignoreDelimiters.forEach(function(delimiterPair) { | |
| 24366 if (!delimiterPair.start || !delimiterPair.end) | |
| 24367 return; | |
| 24368 | |
| 24369 reIgnoreStr = escapeRegex(delimiterPair.start) + | |
| 24370 "[\\s\\S]*?" + | |
| 24371 escapeRegex(delimiterPair.end); | |
| 24372 | |
| 24373 reIgnore = new RegExp(reIgnoreStr, "ig"); | |
| 24374 | |
| 24375 s = s.replace(reIgnore, function(match) { | |
| 24376 return match.replace(/./g, " "); | |
| 24377 }); | |
| 24378 }); | |
| 24379 } | |
| 24380 | |
| 24381 lex = new Lexer(s); | |
| 24382 | |
| 24383 lex.on("warning", function(ev) { | |
| 24384 warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data)); | |
| 24385 }); | |
| 24386 | |
| 24387 lex.on("error", function(ev) { | |
| 24388 errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data)); | |
| 24389 }); | |
| 24390 | |
| 24391 lex.on("fatal", function(ev) { | |
| 24392 quit("E041", ev); | |
| 24393 }); | |
| 24394 | |
| 24395 lex.on("Identifier", function(ev) { | |
| 24396 emitter.emit("Identifier", ev); | |
| 24397 }); | |
| 24398 | |
| 24399 lex.on("String", function(ev) { | |
| 24400 emitter.emit("String", ev); | |
| 24401 }); | |
| 24402 | |
| 24403 lex.on("Number", function(ev) { | |
| 24404 emitter.emit("Number", ev); | |
| 24405 }); | |
| 24406 | |
| 24407 // Check options | |
| 24408 for (var name in o) { | |
| 24409 if (_.has(o, name)) { | |
| 24410 checkOption(name, state.tokens.curr); | |
| 24411 } | |
| 24412 } | |
| 24413 | |
| 24414 try { | |
| 24415 applyOptions(); | |
| 24416 | |
| 24417 // combine the passed globals after we've assumed all our options | |
| 24418 combine(predefined, g || {}); | |
| 24419 | |
| 24420 //reset values | |
| 24421 parseComma.first = true; | |
| 24422 | |
| 24423 advance(); | |
| 24424 switch (state.tokens.next.id) { | |
| 24425 case "{": | |
| 24426 case "[": | |
| 24427 destructuringAssignOrJsonValue(); | |
| 24428 break; | |
| 24429 default: | |
| 24430 directives(); | |
| 24431 | |
| 24432 if (state.directive["use strict"]) { | |
| 24433 if (!state.allowsGlobalUsd()) { | |
| 24434 warning("W097", state.tokens.prev); | |
| 24435 } | |
| 24436 } | |
| 24437 | |
| 24438 statements(); | |
| 24439 } | |
| 24440 | |
| 24441 if (state.tokens.next.id !== "(end)") { | |
| 24442 quit("E041", state.tokens.curr); | |
| 24443 } | |
| 24444 | |
| 24445 state.funct["(scope)"].unstack(); | |
| 24446 | |
| 24447 } catch (err) { | |
| 24448 if (err && err.name === "JSHintError") { | |
| 24449 var nt = state.tokens.next || {}; | |
| 24450 JSHINT.errors.push({ | |
| 24451 scope : "(main)", | |
| 24452 raw : err.raw, | |
| 24453 code : err.code, | |
| 24454 reason : err.reason, | |
| 24455 line : err.line || nt.line, | |
| 24456 character : err.character || nt.from | |
| 24457 }); | |
| 24458 } else { | |
| 24459 throw err; | |
| 24460 } | |
| 24461 } | |
| 24462 | |
| 24463 // Loop over the listed "internals", and check them as well. | |
| 24464 if (JSHINT.scope === "(main)") { | |
| 24465 lintEvalCode(JSHINT.internals, o || {}, g); | |
| 24466 } | |
| 24467 | |
| 24468 return JSHINT.errors.length === 0; | |
| 24469 }; | |
| 24470 | |
| 24471 // Modules. | |
| 24472 itself.addModule = function(func) { | |
| 24473 extraModules.push(func); | |
| 24474 }; | |
| 24475 | |
| 24476 itself.addModule(style.register); | |
| 24477 | |
| 24478 // Data summary. | |
| 24479 itself.data = function() { | |
| 24480 var data = { | |
| 24481 functions: [], | |
| 24482 options: state.option | |
| 24483 }; | |
| 24484 | |
| 24485 var fu, f, i, j, n, globals; | |
| 24486 | |
| 24487 if (itself.errors.length) { | |
| 24488 data.errors = itself.errors; | |
| 24489 } | |
| 24490 | |
| 24491 if (state.jsonMode) { | |
| 24492 data.json = true; | |
| 24493 } | |
| 24494 | |
| 24495 var impliedGlobals = state.funct["(scope)"].getImpliedGlobals(); | |
| 24496 if (impliedGlobals.length > 0) { | |
| 24497 data.implieds = impliedGlobals; | |
| 24498 } | |
| 24499 | |
| 24500 if (urls.length > 0) { | |
| 24501 data.urls = urls; | |
| 24502 } | |
| 24503 | |
| 24504 globals = state.funct["(scope)"].getUsedOrDefinedGlobals(); | |
| 24505 if (globals.length > 0) { | |
| 24506 data.globals = globals; | |
| 24507 } | |
| 24508 | |
| 24509 for (i = 1; i < functions.length; i += 1) { | |
| 24510 f = functions[i]; | |
| 24511 fu = {}; | |
| 24512 | |
| 24513 for (j = 0; j < functionicity.length; j += 1) { | |
| 24514 fu[functionicity[j]] = []; | |
| 24515 } | |
| 24516 | |
| 24517 for (j = 0; j < functionicity.length; j += 1) { | |
| 24518 if (fu[functionicity[j]].length === 0) { | |
| 24519 delete fu[functionicity[j]]; | |
| 24520 } | |
| 24521 } | |
| 24522 | |
| 24523 fu.name = f["(name)"]; | |
| 24524 fu.param = f["(params)"]; | |
| 24525 fu.line = f["(line)"]; | |
| 24526 fu.character = f["(character)"]; | |
| 24527 fu.last = f["(last)"]; | |
| 24528 fu.lastcharacter = f["(lastcharacter)"]; | |
| 24529 | |
| 24530 fu.metrics = { | |
| 24531 complexity: f["(metrics)"].ComplexityCount, | |
| 24532 parameters: f["(metrics)"].arity, | |
| 24533 statements: f["(metrics)"].statementCount | |
| 24534 }; | |
| 24535 | |
| 24536 data.functions.push(fu); | |
| 24537 } | |
| 24538 | |
| 24539 var unuseds = state.funct["(scope)"].getUnuseds(); | |
| 24540 if (unuseds.length > 0) { | |
| 24541 data.unused = unuseds; | |
| 24542 } | |
| 24543 | |
| 24544 for (n in member) { | |
| 24545 if (typeof member[n] === "number") { | |
| 24546 data.member = member; | |
| 24547 break; | |
| 24548 } | |
| 24549 } | |
| 24550 | |
| 24551 return data; | |
| 24552 }; | |
| 24553 | |
| 24554 itself.jshint = itself; | |
| 24555 | |
| 24556 return itself; | |
| 24557 }()); | |
| 24558 | |
| 24559 // Make JSHINT a Node module, if possible. | |
| 24560 if (typeof exports === "object" && exports) { | |
| 24561 exports.JSHINT = JSHINT; | |
| 24562 } | |
| 24563 | |
| 24564 },{"./lex.js":13,"./messages.js":14,"./options.js":16,"./reg.js":17,"./scope-manager.js":18,"./state.js":19,"./style.js":20,"./vars.js":21,"console-browserify":10,"events":5,"lodash":12}]},{},[]); | |
| 24565 | |
| 24566 JSHINT = require('jshint').JSHINT; | |
| 24567 if (typeof exports === 'object' && exports) exports.JSHINT = JSHINT; | |
| 24568 }()); |