--- a/env/lib/python3.7/site-packages/pyparsing.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,7107 +0,0 @@
-# -*- coding: utf-8 -*-
-# module pyparsing.py
-#
-# Copyright (c) 2003-2019  Paul T. McGuire
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-
-__doc__ = \
-"""
-pyparsing module - Classes and methods to define and execute parsing grammars
-=============================================================================
-
-The pyparsing module is an alternative approach to creating and
-executing simple grammars, vs. the traditional lex/yacc approach, or the
-use of regular expressions.  With pyparsing, you don't need to learn
-a new syntax for defining grammars or matching expressions - the parsing
-module provides a library of classes that you use to construct the
-grammar directly in Python.
-
-Here is a program to parse "Hello, World!" (or any greeting of the form
-``"<salutation>, <addressee>!"``), built up using :class:`Word`,
-:class:`Literal`, and :class:`And` elements
-(the :class:`'+'<ParserElement.__add__>` operators create :class:`And` expressions,
-and the strings are auto-converted to :class:`Literal` expressions)::
-
-    from pyparsing import Word, alphas
-
-    # define grammar of a greeting
-    greet = Word(alphas) + "," + Word(alphas) + "!"
-
-    hello = "Hello, World!"
-    print (hello, "->", greet.parseString(hello))
-
-The program outputs the following::
-
-    Hello, World! -> ['Hello', ',', 'World', '!']
-
-The Python representation of the grammar is quite readable, owing to the
-self-explanatory class names, and the use of '+', '|' and '^' operators.
-
-The :class:`ParseResults` object returned from
-:class:`ParserElement.parseString` can be
-accessed as a nested list, a dictionary, or an object with named
-attributes.
-
-The pyparsing module handles some of the problems that are typically
-vexing when writing text parsers:
-
-  - extra or missing whitespace (the above program will also handle
-    "Hello,World!", "Hello  ,  World  !", etc.)
-  - quoted strings
-  - embedded comments
-
-
-Getting Started -
------------------
-Visit the classes :class:`ParserElement` and :class:`ParseResults` to
-see the base classes that most other pyparsing
-classes inherit from. Use the docstrings for examples of how to:
-
- - construct literal match expressions from :class:`Literal` and
-   :class:`CaselessLiteral` classes
- - construct character word-group expressions using the :class:`Word`
-   class
- - see how to create repetitive expressions using :class:`ZeroOrMore`
-   and :class:`OneOrMore` classes
- - use :class:`'+'<And>`, :class:`'|'<MatchFirst>`, :class:`'^'<Or>`,
-   and :class:`'&'<Each>` operators to combine simple expressions into
-   more complex ones
- - associate names with your parsed results using
-   :class:`ParserElement.setResultsName`
- - access the parsed data, which is returned as a :class:`ParseResults`
-   object
- - find some helpful expression short-cuts like :class:`delimitedList`
-   and :class:`oneOf`
- - find more useful common expressions in the :class:`pyparsing_common`
-   namespace class
-"""
-
-__version__ = "2.4.7"
-__versionTime__ = "30 Mar 2020 00:43 UTC"
-__author__ = "Paul McGuire <ptmcg@users.sourceforge.net>"
-
-import string
-from weakref import ref as wkref
-import copy
-import sys
-import warnings
-import re
-import sre_constants
-import collections
-import pprint
-import traceback
-import types
-from datetime import datetime
-from operator import itemgetter
-import itertools
-from functools import wraps
-from contextlib import contextmanager
-
-try:
-    # Python 3
-    from itertools import filterfalse
-except ImportError:
-    from itertools import ifilterfalse as filterfalse
-
-try:
-    from _thread import RLock
-except ImportError:
-    from threading import RLock
-
-try:
-    # Python 3
-    from collections.abc import Iterable
-    from collections.abc import MutableMapping, Mapping
-except ImportError:
-    # Python 2.7
-    from collections import Iterable
-    from collections import MutableMapping, Mapping
-
-try:
-    from collections import OrderedDict as _OrderedDict
-except ImportError:
-    try:
-        from ordereddict import OrderedDict as _OrderedDict
-    except ImportError:
-        _OrderedDict = None
-
-try:
-    from types import SimpleNamespace
-except ImportError:
-    class SimpleNamespace: pass
-
-# version compatibility configuration
-__compat__ = SimpleNamespace()
-__compat__.__doc__ = """
-    A cross-version compatibility configuration for pyparsing features that will be
-    released in a future version. By setting values in this configuration to True,
-    those features can be enabled in prior versions for compatibility development
-    and testing.
-
-     - collect_all_And_tokens - flag to enable fix for Issue #63 that fixes erroneous grouping
-       of results names when an And expression is nested within an Or or MatchFirst; set to
-       True to enable bugfix released in pyparsing 2.3.0, or False to preserve
-       pre-2.3.0 handling of named results
-"""
-__compat__.collect_all_And_tokens = True
-
-__diag__ = SimpleNamespace()
-__diag__.__doc__ = """
-Diagnostic configuration (all default to False)
-     - warn_multiple_tokens_in_named_alternation - flag to enable warnings when a results
-       name is defined on a MatchFirst or Or expression with one or more And subexpressions
-       (only warns if __compat__.collect_all_And_tokens is False)
-     - warn_ungrouped_named_tokens_in_collection - flag to enable warnings when a results
-       name is defined on a containing expression with ungrouped subexpressions that also
-       have results names
-     - warn_name_set_on_empty_Forward - flag to enable warnings whan a Forward is defined
-       with a results name, but has no contents defined
-     - warn_on_multiple_string_args_to_oneof - flag to enable warnings whan oneOf is
-       incorrectly called with multiple str arguments
-     - enable_debug_on_named_expressions - flag to auto-enable debug on all subsequent
-       calls to ParserElement.setName()
-"""
-__diag__.warn_multiple_tokens_in_named_alternation = False
-__diag__.warn_ungrouped_named_tokens_in_collection = False
-__diag__.warn_name_set_on_empty_Forward = False
-__diag__.warn_on_multiple_string_args_to_oneof = False
-__diag__.enable_debug_on_named_expressions = False
-__diag__._all_names = [nm for nm in vars(__diag__) if nm.startswith("enable_") or nm.startswith("warn_")]
-
-def _enable_all_warnings():
-    __diag__.warn_multiple_tokens_in_named_alternation = True
-    __diag__.warn_ungrouped_named_tokens_in_collection = True
-    __diag__.warn_name_set_on_empty_Forward = True
-    __diag__.warn_on_multiple_string_args_to_oneof = True
-__diag__.enable_all_warnings = _enable_all_warnings
-
-
-__all__ = ['__version__', '__versionTime__', '__author__', '__compat__', '__diag__',
-           'And', 'CaselessKeyword', 'CaselessLiteral', 'CharsNotIn', 'Combine', 'Dict', 'Each', 'Empty',
-           'FollowedBy', 'Forward', 'GoToColumn', 'Group', 'Keyword', 'LineEnd', 'LineStart', 'Literal',
-           'PrecededBy', 'MatchFirst', 'NoMatch', 'NotAny', 'OneOrMore', 'OnlyOnce', 'Optional', 'Or',
-           'ParseBaseException', 'ParseElementEnhance', 'ParseException', 'ParseExpression', 'ParseFatalException',
-           'ParseResults', 'ParseSyntaxException', 'ParserElement', 'QuotedString', 'RecursiveGrammarException',
-           'Regex', 'SkipTo', 'StringEnd', 'StringStart', 'Suppress', 'Token', 'TokenConverter',
-           'White', 'Word', 'WordEnd', 'WordStart', 'ZeroOrMore', 'Char',
-           'alphanums', 'alphas', 'alphas8bit', 'anyCloseTag', 'anyOpenTag', 'cStyleComment', 'col',
-           'commaSeparatedList', 'commonHTMLEntity', 'countedArray', 'cppStyleComment', 'dblQuotedString',
-           'dblSlashComment', 'delimitedList', 'dictOf', 'downcaseTokens', 'empty', 'hexnums',
-           'htmlComment', 'javaStyleComment', 'line', 'lineEnd', 'lineStart', 'lineno',
-           'makeHTMLTags', 'makeXMLTags', 'matchOnlyAtCol', 'matchPreviousExpr', 'matchPreviousLiteral',
-           'nestedExpr', 'nullDebugAction', 'nums', 'oneOf', 'opAssoc', 'operatorPrecedence', 'printables',
-           'punc8bit', 'pythonStyleComment', 'quotedString', 'removeQuotes', 'replaceHTMLEntity',
-           'replaceWith', 'restOfLine', 'sglQuotedString', 'srange', 'stringEnd',
-           'stringStart', 'traceParseAction', 'unicodeString', 'upcaseTokens', 'withAttribute',
-           'indentedBlock', 'originalTextFor', 'ungroup', 'infixNotation', 'locatedExpr', 'withClass',
-           'CloseMatch', 'tokenMap', 'pyparsing_common', 'pyparsing_unicode', 'unicode_set',
-           'conditionAsParseAction', 're',
-           ]
-
-system_version = tuple(sys.version_info)[:3]
-PY_3 = system_version[0] == 3
-if PY_3:
-    _MAX_INT = sys.maxsize
-    basestring = str
-    unichr = chr
-    unicode = str
-    _ustr = str
-
-    # build list of single arg builtins, that can be used as parse actions
-    singleArgBuiltins = [sum, len, sorted, reversed, list, tuple, set, any, all, min, max]
-
-else:
-    _MAX_INT = sys.maxint
-    range = xrange
-
-    def _ustr(obj):
-        """Drop-in replacement for str(obj) that tries to be Unicode
-        friendly. It first tries str(obj). If that fails with
-        a UnicodeEncodeError, then it tries unicode(obj). It then
-        < returns the unicode object | encodes it with the default
-        encoding | ... >.
-        """
-        if isinstance(obj, unicode):
-            return obj
-
-        try:
-            # If this works, then _ustr(obj) has the same behaviour as str(obj), so
-            # it won't break any existing code.
-            return str(obj)
-
-        except UnicodeEncodeError:
-            # Else encode it
-            ret = unicode(obj).encode(sys.getdefaultencoding(), 'xmlcharrefreplace')
-            xmlcharref = Regex(r'&#\d+;')
-            xmlcharref.setParseAction(lambda t: '\\u' + hex(int(t[0][2:-1]))[2:])
-            return xmlcharref.transformString(ret)
-
-    # build list of single arg builtins, tolerant of Python version, that can be used as parse actions
-    singleArgBuiltins = []
-    import __builtin__
-
-    for fname in "sum len sorted reversed list tuple set any all min max".split():
-        try:
-            singleArgBuiltins.append(getattr(__builtin__, fname))
-        except AttributeError:
-            continue
-
-_generatorType = type((y for y in range(1)))
-
-def _xml_escape(data):
-    """Escape &, <, >, ", ', etc. in a string of data."""
-
-    # ampersand must be replaced first
-    from_symbols = '&><"\''
-    to_symbols = ('&' + s + ';' for s in "amp gt lt quot apos".split())
-    for from_, to_ in zip(from_symbols, to_symbols):
-        data = data.replace(from_, to_)
-    return data
-
-alphas = string.ascii_uppercase + string.ascii_lowercase
-nums = "0123456789"
-hexnums = nums + "ABCDEFabcdef"
-alphanums = alphas + nums
-_bslash = chr(92)
-printables = "".join(c for c in string.printable if c not in string.whitespace)
-
-
-def conditionAsParseAction(fn, message=None, fatal=False):
-    msg = message if message is not None else "failed user-defined condition"
-    exc_type = ParseFatalException if fatal else ParseException
-    fn = _trim_arity(fn)
-
-    @wraps(fn)
-    def pa(s, l, t):
-        if not bool(fn(s, l, t)):
-            raise exc_type(s, l, msg)
-
-    return pa
-
-class ParseBaseException(Exception):
-    """base exception class for all parsing runtime exceptions"""
-    # Performance tuning: we construct a *lot* of these, so keep this
-    # constructor as small and fast as possible
-    def __init__(self, pstr, loc=0, msg=None, elem=None):
-        self.loc = loc
-        if msg is None:
-            self.msg = pstr
-            self.pstr = ""
-        else:
-            self.msg = msg
-            self.pstr = pstr
-        self.parserElement = elem
-        self.args = (pstr, loc, msg)
-
-    @classmethod
-    def _from_exception(cls, pe):
-        """
-        internal factory method to simplify creating one type of ParseException
-        from another - avoids having __init__ signature conflicts among subclasses
-        """
-        return cls(pe.pstr, pe.loc, pe.msg, pe.parserElement)
-
-    def __getattr__(self, aname):
-        """supported attributes by name are:
-           - lineno - returns the line number of the exception text
-           - col - returns the column number of the exception text
-           - line - returns the line containing the exception text
-        """
-        if aname == "lineno":
-            return lineno(self.loc, self.pstr)
-        elif aname in ("col", "column"):
-            return col(self.loc, self.pstr)
-        elif aname == "line":
-            return line(self.loc, self.pstr)
-        else:
-            raise AttributeError(aname)
-
-    def __str__(self):
-        if self.pstr:
-            if self.loc >= len(self.pstr):
-                foundstr = ', found end of text'
-            else:
-                foundstr = (', found %r' % self.pstr[self.loc:self.loc + 1]).replace(r'\\', '\\')
-        else:
-            foundstr = ''
-        return ("%s%s  (at char %d), (line:%d, col:%d)" %
-                   (self.msg, foundstr, self.loc, self.lineno, self.column))
-    def __repr__(self):
-        return _ustr(self)
-    def markInputline(self, markerString=">!<"):
-        """Extracts the exception line from the input string, and marks
-           the location of the exception with a special symbol.
-        """
-        line_str = self.line
-        line_column = self.column - 1
-        if markerString:
-            line_str = "".join((line_str[:line_column],
-                                markerString, line_str[line_column:]))
-        return line_str.strip()
-    def __dir__(self):
-        return "lineno col line".split() + dir(type(self))
-
-class ParseException(ParseBaseException):
-    """
-    Exception thrown when parse expressions don't match class;
-    supported attributes by name are:
-    - lineno - returns the line number of the exception text
-    - col - returns the column number of the exception text
-    - line - returns the line containing the exception text
-
-    Example::
-
-        try:
-            Word(nums).setName("integer").parseString("ABC")
-        except ParseException as pe:
-            print(pe)
-            print("column: {}".format(pe.col))
-
-    prints::
-
-       Expected integer (at char 0), (line:1, col:1)
-        column: 1
-
-    """
-
-    @staticmethod
-    def explain(exc, depth=16):
-        """
-        Method to take an exception and translate the Python internal traceback into a list
-        of the pyparsing expressions that caused the exception to be raised.
-
-        Parameters:
-
-         - exc - exception raised during parsing (need not be a ParseException, in support
-           of Python exceptions that might be raised in a parse action)
-         - depth (default=16) - number of levels back in the stack trace to list expression
-           and function names; if None, the full stack trace names will be listed; if 0, only
-           the failing input line, marker, and exception string will be shown
-
-        Returns a multi-line string listing the ParserElements and/or function names in the
-        exception's stack trace.
-
-        Note: the diagnostic output will include string representations of the expressions
-        that failed to parse. These representations will be more helpful if you use `setName` to
-        give identifiable names to your expressions. Otherwise they will use the default string
-        forms, which may be cryptic to read.
-
-        explain() is only supported under Python 3.
-        """
-        import inspect
-
-        if depth is None:
-            depth = sys.getrecursionlimit()
-        ret = []
-        if isinstance(exc, ParseBaseException):
-            ret.append(exc.line)
-            ret.append(' ' * (exc.col - 1) + '^')
-        ret.append("{0}: {1}".format(type(exc).__name__, exc))
-
-        if depth > 0:
-            callers = inspect.getinnerframes(exc.__traceback__, context=depth)
-            seen = set()
-            for i, ff in enumerate(callers[-depth:]):
-                frm = ff[0]
-
-                f_self = frm.f_locals.get('self', None)
-                if isinstance(f_self, ParserElement):
-                    if frm.f_code.co_name not in ('parseImpl', '_parseNoCache'):
-                        continue
-                    if f_self in seen:
-                        continue
-                    seen.add(f_self)
-
-                    self_type = type(f_self)
-                    ret.append("{0}.{1} - {2}".format(self_type.__module__,
-                                                      self_type.__name__,
-                                                      f_self))
-                elif f_self is not None:
-                    self_type = type(f_self)
-                    ret.append("{0}.{1}".format(self_type.__module__,
-                                                self_type.__name__))
-                else:
-                    code = frm.f_code
-                    if code.co_name in ('wrapper', '<module>'):
-                        continue
-
-                    ret.append("{0}".format(code.co_name))
-
-                depth -= 1
-                if not depth:
-                    break
-
-        return '\n'.join(ret)
-
-
-class ParseFatalException(ParseBaseException):
-    """user-throwable exception thrown when inconsistent parse content
-       is found; stops all parsing immediately"""
-    pass
-
-class ParseSyntaxException(ParseFatalException):
-    """just like :class:`ParseFatalException`, but thrown internally
-    when an :class:`ErrorStop<And._ErrorStop>` ('-' operator) indicates
-    that parsing is to stop immediately because an unbacktrackable
-    syntax error has been found.
-    """
-    pass
-
-#~ class ReparseException(ParseBaseException):
-    #~ """Experimental class - parse actions can raise this exception to cause
-       #~ pyparsing to reparse the input string:
-        #~ - with a modified input string, and/or
-        #~ - with a modified start location
-       #~ Set the values of the ReparseException in the constructor, and raise the
-       #~ exception in a parse action to cause pyparsing to use the new string/location.
-       #~ Setting the values as None causes no change to be made.
-       #~ """
-    #~ def __init_( self, newstring, restartLoc ):
-        #~ self.newParseText = newstring
-        #~ self.reparseLoc = restartLoc
-
-class RecursiveGrammarException(Exception):
-    """exception thrown by :class:`ParserElement.validate` if the
-    grammar could be improperly recursive
-    """
-    def __init__(self, parseElementList):
-        self.parseElementTrace = parseElementList
-
-    def __str__(self):
-        return "RecursiveGrammarException: %s" % self.parseElementTrace
-
-class _ParseResultsWithOffset(object):
-    def __init__(self, p1, p2):
-        self.tup = (p1, p2)
-    def __getitem__(self, i):
-        return self.tup[i]
-    def __repr__(self):
-        return repr(self.tup[0])
-    def setOffset(self, i):
-        self.tup = (self.tup[0], i)
-
-class ParseResults(object):
-    """Structured parse results, to provide multiple means of access to
-    the parsed data:
-
-       - as a list (``len(results)``)
-       - by list index (``results[0], results[1]``, etc.)
-       - by attribute (``results.<resultsName>`` - see :class:`ParserElement.setResultsName`)
-
-    Example::
-
-        integer = Word(nums)
-        date_str = (integer.setResultsName("year") + '/'
-                        + integer.setResultsName("month") + '/'
-                        + integer.setResultsName("day"))
-        # equivalent form:
-        # date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-        # parseString returns a ParseResults object
-        result = date_str.parseString("1999/12/31")
-
-        def test(s, fn=repr):
-            print("%s -> %s" % (s, fn(eval(s))))
-        test("list(result)")
-        test("result[0]")
-        test("result['month']")
-        test("result.day")
-        test("'month' in result")
-        test("'minutes' in result")
-        test("result.dump()", str)
-
-    prints::
-
-        list(result) -> ['1999', '/', '12', '/', '31']
-        result[0] -> '1999'
-        result['month'] -> '12'
-        result.day -> '31'
-        'month' in result -> True
-        'minutes' in result -> False
-        result.dump() -> ['1999', '/', '12', '/', '31']
-        - day: 31
-        - month: 12
-        - year: 1999
-    """
-    def __new__(cls, toklist=None, name=None, asList=True, modal=True):
-        if isinstance(toklist, cls):
-            return toklist
-        retobj = object.__new__(cls)
-        retobj.__doinit = True
-        return retobj
-
-    # Performance tuning: we construct a *lot* of these, so keep this
-    # constructor as small and fast as possible
-    def __init__(self, toklist=None, name=None, asList=True, modal=True, isinstance=isinstance):
-        if self.__doinit:
-            self.__doinit = False
-            self.__name = None
-            self.__parent = None
-            self.__accumNames = {}
-            self.__asList = asList
-            self.__modal = modal
-            if toklist is None:
-                toklist = []
-            if isinstance(toklist, list):
-                self.__toklist = toklist[:]
-            elif isinstance(toklist, _generatorType):
-                self.__toklist = list(toklist)
-            else:
-                self.__toklist = [toklist]
-            self.__tokdict = dict()
-
-        if name is not None and name:
-            if not modal:
-                self.__accumNames[name] = 0
-            if isinstance(name, int):
-                name = _ustr(name)  # will always return a str, but use _ustr for consistency
-            self.__name = name
-            if not (isinstance(toklist, (type(None), basestring, list)) and toklist in (None, '', [])):
-                if isinstance(toklist, basestring):
-                    toklist = [toklist]
-                if asList:
-                    if isinstance(toklist, ParseResults):
-                        self[name] = _ParseResultsWithOffset(ParseResults(toklist.__toklist), 0)
-                    else:
-                        self[name] = _ParseResultsWithOffset(ParseResults(toklist[0]), 0)
-                    self[name].__name = name
-                else:
-                    try:
-                        self[name] = toklist[0]
-                    except (KeyError, TypeError, IndexError):
-                        self[name] = toklist
-
-    def __getitem__(self, i):
-        if isinstance(i, (int, slice)):
-            return self.__toklist[i]
-        else:
-            if i not in self.__accumNames:
-                return self.__tokdict[i][-1][0]
-            else:
-                return ParseResults([v[0] for v in self.__tokdict[i]])
-
-    def __setitem__(self, k, v, isinstance=isinstance):
-        if isinstance(v, _ParseResultsWithOffset):
-            self.__tokdict[k] = self.__tokdict.get(k, list()) + [v]
-            sub = v[0]
-        elif isinstance(k, (int, slice)):
-            self.__toklist[k] = v
-            sub = v
-        else:
-            self.__tokdict[k] = self.__tokdict.get(k, list()) + [_ParseResultsWithOffset(v, 0)]
-            sub = v
-        if isinstance(sub, ParseResults):
-            sub.__parent = wkref(self)
-
-    def __delitem__(self, i):
-        if isinstance(i, (int, slice)):
-            mylen = len(self.__toklist)
-            del self.__toklist[i]
-
-            # convert int to slice
-            if isinstance(i, int):
-                if i < 0:
-                    i += mylen
-                i = slice(i, i + 1)
-            # get removed indices
-            removed = list(range(*i.indices(mylen)))
-            removed.reverse()
-            # fixup indices in token dictionary
-            for name, occurrences in self.__tokdict.items():
-                for j in removed:
-                    for k, (value, position) in enumerate(occurrences):
-                        occurrences[k] = _ParseResultsWithOffset(value, position - (position > j))
-        else:
-            del self.__tokdict[i]
-
-    def __contains__(self, k):
-        return k in self.__tokdict
-
-    def __len__(self):
-        return len(self.__toklist)
-
-    def __bool__(self):
-        return (not not self.__toklist)
-    __nonzero__ = __bool__
-
-    def __iter__(self):
-        return iter(self.__toklist)
-
-    def __reversed__(self):
-        return iter(self.__toklist[::-1])
-
-    def _iterkeys(self):
-        if hasattr(self.__tokdict, "iterkeys"):
-            return self.__tokdict.iterkeys()
-        else:
-            return iter(self.__tokdict)
-
-    def _itervalues(self):
-        return (self[k] for k in self._iterkeys())
-
-    def _iteritems(self):
-        return ((k, self[k]) for k in self._iterkeys())
-
-    if PY_3:
-        keys = _iterkeys
-        """Returns an iterator of all named result keys."""
-
-        values = _itervalues
-        """Returns an iterator of all named result values."""
-
-        items = _iteritems
-        """Returns an iterator of all named result key-value tuples."""
-
-    else:
-        iterkeys = _iterkeys
-        """Returns an iterator of all named result keys (Python 2.x only)."""
-
-        itervalues = _itervalues
-        """Returns an iterator of all named result values (Python 2.x only)."""
-
-        iteritems = _iteritems
-        """Returns an iterator of all named result key-value tuples (Python 2.x only)."""
-
-        def keys(self):
-            """Returns all named result keys (as a list in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.iterkeys())
-
-        def values(self):
-            """Returns all named result values (as a list in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.itervalues())
-
-        def items(self):
-            """Returns all named result key-values (as a list of tuples in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.iteritems())
-
-    def haskeys(self):
-        """Since keys() returns an iterator, this method is helpful in bypassing
-           code that looks for the existence of any defined results names."""
-        return bool(self.__tokdict)
-
-    def pop(self, *args, **kwargs):
-        """
-        Removes and returns item at specified index (default= ``last``).
-        Supports both ``list`` and ``dict`` semantics for ``pop()``. If
-        passed no argument or an integer argument, it will use ``list``
-        semantics and pop tokens from the list of parsed tokens. If passed
-        a non-integer argument (most likely a string), it will use ``dict``
-        semantics and pop the corresponding value from any defined results
-        names. A second default return value argument is supported, just as in
-        ``dict.pop()``.
-
-        Example::
-
-            def remove_first(tokens):
-                tokens.pop(0)
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-            print(OneOrMore(Word(nums)).addParseAction(remove_first).parseString("0 123 321")) # -> ['123', '321']
-
-            label = Word(alphas)
-            patt = label("LABEL") + OneOrMore(Word(nums))
-            print(patt.parseString("AAB 123 321").dump())
-
-            # Use pop() in a parse action to remove named result (note that corresponding value is not
-            # removed from list form of results)
-            def remove_LABEL(tokens):
-                tokens.pop("LABEL")
-                return tokens
-            patt.addParseAction(remove_LABEL)
-            print(patt.parseString("AAB 123 321").dump())
-
-        prints::
-
-            ['AAB', '123', '321']
-            - LABEL: AAB
-
-            ['AAB', '123', '321']
-        """
-        if not args:
-            args = [-1]
-        for k, v in kwargs.items():
-            if k == 'default':
-                args = (args[0], v)
-            else:
-                raise TypeError("pop() got an unexpected keyword argument '%s'" % k)
-        if (isinstance(args[0], int)
-                or len(args) == 1
-                or args[0] in self):
-            index = args[0]
-            ret = self[index]
-            del self[index]
-            return ret
-        else:
-            defaultvalue = args[1]
-            return defaultvalue
-
-    def get(self, key, defaultValue=None):
-        """
-        Returns named result matching the given key, or if there is no
-        such name, then returns the given ``defaultValue`` or ``None`` if no
-        ``defaultValue`` is specified.
-
-        Similar to ``dict.get()``.
-
-        Example::
-
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-            result = date_str.parseString("1999/12/31")
-            print(result.get("year")) # -> '1999'
-            print(result.get("hour", "not specified")) # -> 'not specified'
-            print(result.get("hour")) # -> None
-        """
-        if key in self:
-            return self[key]
-        else:
-            return defaultValue
-
-    def insert(self, index, insStr):
-        """
-        Inserts new element at location index in the list of parsed tokens.
-
-        Similar to ``list.insert()``.
-
-        Example::
-
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-
-            # use a parse action to insert the parse location in the front of the parsed results
-            def insert_locn(locn, tokens):
-                tokens.insert(0, locn)
-            print(OneOrMore(Word(nums)).addParseAction(insert_locn).parseString("0 123 321")) # -> [0, '0', '123', '321']
-        """
-        self.__toklist.insert(index, insStr)
-        # fixup indices in token dictionary
-        for name, occurrences in self.__tokdict.items():
-            for k, (value, position) in enumerate(occurrences):
-                occurrences[k] = _ParseResultsWithOffset(value, position + (position > index))
-
-    def append(self, item):
-        """
-        Add single element to end of ParseResults list of elements.
-
-        Example::
-
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-
-            # use a parse action to compute the sum of the parsed integers, and add it to the end
-            def append_sum(tokens):
-                tokens.append(sum(map(int, tokens)))
-            print(OneOrMore(Word(nums)).addParseAction(append_sum).parseString("0 123 321")) # -> ['0', '123', '321', 444]
-        """
-        self.__toklist.append(item)
-
-    def extend(self, itemseq):
-        """
-        Add sequence of elements to end of ParseResults list of elements.
-
-        Example::
-
-            patt = OneOrMore(Word(alphas))
-
-            # use a parse action to append the reverse of the matched strings, to make a palindrome
-            def make_palindrome(tokens):
-                tokens.extend(reversed([t[::-1] for t in tokens]))
-                return ''.join(tokens)
-            print(patt.addParseAction(make_palindrome).parseString("lskdj sdlkjf lksd")) # -> 'lskdjsdlkjflksddsklfjkldsjdksl'
-        """
-        if isinstance(itemseq, ParseResults):
-            self.__iadd__(itemseq)
-        else:
-            self.__toklist.extend(itemseq)
-
-    def clear(self):
-        """
-        Clear all elements and results names.
-        """
-        del self.__toklist[:]
-        self.__tokdict.clear()
-
-    def __getattr__(self, name):
-        try:
-            return self[name]
-        except KeyError:
-            return ""
-
-    def __add__(self, other):
-        ret = self.copy()
-        ret += other
-        return ret
-
-    def __iadd__(self, other):
-        if other.__tokdict:
-            offset = len(self.__toklist)
-            addoffset = lambda a: offset if a < 0 else a + offset
-            otheritems = other.__tokdict.items()
-            otherdictitems = [(k, _ParseResultsWithOffset(v[0], addoffset(v[1])))
-                              for k, vlist in otheritems for v in vlist]
-            for k, v in otherdictitems:
-                self[k] = v
-                if isinstance(v[0], ParseResults):
-                    v[0].__parent = wkref(self)
-
-        self.__toklist += other.__toklist
-        self.__accumNames.update(other.__accumNames)
-        return self
-
-    def __radd__(self, other):
-        if isinstance(other, int) and other == 0:
-            # useful for merging many ParseResults using sum() builtin
-            return self.copy()
-        else:
-            # this may raise a TypeError - so be it
-            return other + self
-
-    def __repr__(self):
-        return "(%s, %s)" % (repr(self.__toklist), repr(self.__tokdict))
-
-    def __str__(self):
-        return '[' + ', '.join(_ustr(i) if isinstance(i, ParseResults) else repr(i) for i in self.__toklist) + ']'
-
-    def _asStringList(self, sep=''):
-        out = []
-        for item in self.__toklist:
-            if out and sep:
-                out.append(sep)
-            if isinstance(item, ParseResults):
-                out += item._asStringList()
-            else:
-                out.append(_ustr(item))
-        return out
-
-    def asList(self):
-        """
-        Returns the parse results as a nested list of matching tokens, all converted to strings.
-
-        Example::
-
-            patt = OneOrMore(Word(alphas))
-            result = patt.parseString("sldkj lsdkj sldkj")
-            # even though the result prints in string-like form, it is actually a pyparsing ParseResults
-            print(type(result), result) # -> <class 'pyparsing.ParseResults'> ['sldkj', 'lsdkj', 'sldkj']
-
-            # Use asList() to create an actual list
-            result_list = result.asList()
-            print(type(result_list), result_list) # -> <class 'list'> ['sldkj', 'lsdkj', 'sldkj']
-        """
-        return [res.asList() if isinstance(res, ParseResults) else res for res in self.__toklist]
-
-    def asDict(self):
-        """
-        Returns the named parse results as a nested dictionary.
-
-        Example::
-
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-            result = date_str.parseString('12/31/1999')
-            print(type(result), repr(result)) # -> <class 'pyparsing.ParseResults'> (['12', '/', '31', '/', '1999'], {'day': [('1999', 4)], 'year': [('12', 0)], 'month': [('31', 2)]})
-
-            result_dict = result.asDict()
-            print(type(result_dict), repr(result_dict)) # -> <class 'dict'> {'day': '1999', 'year': '12', 'month': '31'}
-
-            # even though a ParseResults supports dict-like access, sometime you just need to have a dict
-            import json
-            print(json.dumps(result)) # -> Exception: TypeError: ... is not JSON serializable
-            print(json.dumps(result.asDict())) # -> {"month": "31", "day": "1999", "year": "12"}
-        """
-        if PY_3:
-            item_fn = self.items
-        else:
-            item_fn = self.iteritems
-
-        def toItem(obj):
-            if isinstance(obj, ParseResults):
-                if obj.haskeys():
-                    return obj.asDict()
-                else:
-                    return [toItem(v) for v in obj]
-            else:
-                return obj
-
-        return dict((k, toItem(v)) for k, v in item_fn())
-
-    def copy(self):
-        """
-        Returns a new copy of a :class:`ParseResults` object.
-        """
-        ret = ParseResults(self.__toklist)
-        ret.__tokdict = dict(self.__tokdict.items())
-        ret.__parent = self.__parent
-        ret.__accumNames.update(self.__accumNames)
-        ret.__name = self.__name
-        return ret
-
-    def asXML(self, doctag=None, namedItemsOnly=False, indent="", formatted=True):
-        """
-        (Deprecated) Returns the parse results as XML. Tags are created for tokens and lists that have defined results names.
-        """
-        nl = "\n"
-        out = []
-        namedItems = dict((v[1], k) for (k, vlist) in self.__tokdict.items()
-                          for v in vlist)
-        nextLevelIndent = indent + "  "
-
-        # collapse out indents if formatting is not desired
-        if not formatted:
-            indent = ""
-            nextLevelIndent = ""
-            nl = ""
-
-        selfTag = None
-        if doctag is not None:
-            selfTag = doctag
-        else:
-            if self.__name:
-                selfTag = self.__name
-
-        if not selfTag:
-            if namedItemsOnly:
-                return ""
-            else:
-                selfTag = "ITEM"
-
-        out += [nl, indent, "<", selfTag, ">"]
-
-        for i, res in enumerate(self.__toklist):
-            if isinstance(res, ParseResults):
-                if i in namedItems:
-                    out += [res.asXML(namedItems[i],
-                                      namedItemsOnly and doctag is None,
-                                      nextLevelIndent,
-                                      formatted)]
-                else:
-                    out += [res.asXML(None,
-                                      namedItemsOnly and doctag is None,
-                                      nextLevelIndent,
-                                      formatted)]
-            else:
-                # individual token, see if there is a name for it
-                resTag = None
-                if i in namedItems:
-                    resTag = namedItems[i]
-                if not resTag:
-                    if namedItemsOnly:
-                        continue
-                    else:
-                        resTag = "ITEM"
-                xmlBodyText = _xml_escape(_ustr(res))
-                out += [nl, nextLevelIndent, "<", resTag, ">",
-                        xmlBodyText,
-                                                "</", resTag, ">"]
-
-        out += [nl, indent, "</", selfTag, ">"]
-        return "".join(out)
-
-    def __lookup(self, sub):
-        for k, vlist in self.__tokdict.items():
-            for v, loc in vlist:
-                if sub is v:
-                    return k
-        return None
-
-    def getName(self):
-        r"""
-        Returns the results name for this token expression. Useful when several
-        different expressions might match at a particular location.
-
-        Example::
-
-            integer = Word(nums)
-            ssn_expr = Regex(r"\d\d\d-\d\d-\d\d\d\d")
-            house_number_expr = Suppress('#') + Word(nums, alphanums)
-            user_data = (Group(house_number_expr)("house_number")
-                        | Group(ssn_expr)("ssn")
-                        | Group(integer)("age"))
-            user_info = OneOrMore(user_data)
-
-            result = user_info.parseString("22 111-22-3333 #221B")
-            for item in result:
-                print(item.getName(), ':', item[0])
-
-        prints::
-
-            age : 22
-            ssn : 111-22-3333
-            house_number : 221B
-        """
-        if self.__name:
-            return self.__name
-        elif self.__parent:
-            par = self.__parent()
-            if par:
-                return par.__lookup(self)
-            else:
-                return None
-        elif (len(self) == 1
-              and len(self.__tokdict) == 1
-              and next(iter(self.__tokdict.values()))[0][1] in (0, -1)):
-            return next(iter(self.__tokdict.keys()))
-        else:
-            return None
-
-    def dump(self, indent='', full=True, include_list=True, _depth=0):
-        """
-        Diagnostic method for listing out the contents of
-        a :class:`ParseResults`. Accepts an optional ``indent`` argument so
-        that this string can be embedded in a nested display of other data.
-
-        Example::
-
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-            result = date_str.parseString('12/31/1999')
-            print(result.dump())
-
-        prints::
-
-            ['12', '/', '31', '/', '1999']
-            - day: 1999
-            - month: 31
-            - year: 12
-        """
-        out = []
-        NL = '\n'
-        if include_list:
-            out.append(indent + _ustr(self.asList()))
-        else:
-            out.append('')
-
-        if full:
-            if self.haskeys():
-                items = sorted((str(k), v) for k, v in self.items())
-                for k, v in items:
-                    if out:
-                        out.append(NL)
-                    out.append("%s%s- %s: " % (indent, ('  ' * _depth), k))
-                    if isinstance(v, ParseResults):
-                        if v:
-                            out.append(v.dump(indent=indent, full=full, include_list=include_list, _depth=_depth + 1))
-                        else:
-                            out.append(_ustr(v))
-                    else:
-                        out.append(repr(v))
-            elif any(isinstance(vv, ParseResults) for vv in self):
-                v = self
-                for i, vv in enumerate(v):
-                    if isinstance(vv, ParseResults):
-                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,
-                                                            ('  ' * (_depth)),
-                                                            i,
-                                                            indent,
-                                                            ('  ' * (_depth + 1)),
-                                                            vv.dump(indent=indent,
-                                                                    full=full,
-                                                                    include_list=include_list,
-                                                                    _depth=_depth + 1)))
-                    else:
-                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,
-                                                            ('  ' * (_depth)),
-                                                            i,
-                                                            indent,
-                                                            ('  ' * (_depth + 1)),
-                                                            _ustr(vv)))
-
-        return "".join(out)
-
-    def pprint(self, *args, **kwargs):
-        """
-        Pretty-printer for parsed results as a list, using the
-        `pprint <https://docs.python.org/3/library/pprint.html>`_ module.
-        Accepts additional positional or keyword args as defined for
-        `pprint.pprint <https://docs.python.org/3/library/pprint.html#pprint.pprint>`_ .
-
-        Example::
-
-            ident = Word(alphas, alphanums)
-            num = Word(nums)
-            func = Forward()
-            term = ident | num | Group('(' + func + ')')
-            func <<= ident + Group(Optional(delimitedList(term)))
-            result = func.parseString("fna a,b,(fnb c,d,200),100")
-            result.pprint(width=40)
-
-        prints::
-
-            ['fna',
-             ['a',
-              'b',
-              ['(', 'fnb', ['c', 'd', '200'], ')'],
-              '100']]
-        """
-        pprint.pprint(self.asList(), *args, **kwargs)
-
-    # add support for pickle protocol
-    def __getstate__(self):
-        return (self.__toklist,
-                (self.__tokdict.copy(),
-                 self.__parent is not None and self.__parent() or None,
-                 self.__accumNames,
-                 self.__name))
-
-    def __setstate__(self, state):
-        self.__toklist = state[0]
-        self.__tokdict, par, inAccumNames, self.__name = state[1]
-        self.__accumNames = {}
-        self.__accumNames.update(inAccumNames)
-        if par is not None:
-            self.__parent = wkref(par)
-        else:
-            self.__parent = None
-
-    def __getnewargs__(self):
-        return self.__toklist, self.__name, self.__asList, self.__modal
-
-    def __dir__(self):
-        return dir(type(self)) + list(self.keys())
-
-    @classmethod
-    def from_dict(cls, other, name=None):
-        """
-        Helper classmethod to construct a ParseResults from a dict, preserving the
-        name-value relations as results names. If an optional 'name' argument is
-        given, a nested ParseResults will be returned
-        """
-        def is_iterable(obj):
-            try:
-                iter(obj)
-            except Exception:
-                return False
-            else:
-                if PY_3:
-                    return not isinstance(obj, (str, bytes))
-                else:
-                    return not isinstance(obj, basestring)
-
-        ret = cls([])
-        for k, v in other.items():
-            if isinstance(v, Mapping):
-                ret += cls.from_dict(v, name=k)
-            else:
-                ret += cls([v], name=k, asList=is_iterable(v))
-        if name is not None:
-            ret = cls([ret], name=name)
-        return ret
-
-MutableMapping.register(ParseResults)
-
-def col (loc, strg):
-    """Returns current column within a string, counting newlines as line separators.
-   The first column is number 1.
-
-   Note: the default parsing behavior is to expand tabs in the input string
-   before starting the parsing process.  See
-   :class:`ParserElement.parseString` for more
-   information on parsing strings containing ``<TAB>`` s, and suggested
-   methods to maintain a consistent view of the parsed string, the parse
-   location, and line and column positions within the parsed string.
-   """
-    s = strg
-    return 1 if 0 < loc < len(s) and s[loc-1] == '\n' else loc - s.rfind("\n", 0, loc)
-
-def lineno(loc, strg):
-    """Returns current line number within a string, counting newlines as line separators.
-    The first line is number 1.
-
-    Note - the default parsing behavior is to expand tabs in the input string
-    before starting the parsing process.  See :class:`ParserElement.parseString`
-    for more information on parsing strings containing ``<TAB>`` s, and
-    suggested methods to maintain a consistent view of the parsed string, the
-    parse location, and line and column positions within the parsed string.
-    """
-    return strg.count("\n", 0, loc) + 1
-
-def line(loc, strg):
-    """Returns the line of text containing loc within a string, counting newlines as line separators.
-       """
-    lastCR = strg.rfind("\n", 0, loc)
-    nextCR = strg.find("\n", loc)
-    if nextCR >= 0:
-        return strg[lastCR + 1:nextCR]
-    else:
-        return strg[lastCR + 1:]
-
-def _defaultStartDebugAction(instring, loc, expr):
-    print(("Match " + _ustr(expr) + " at loc " + _ustr(loc) + "(%d,%d)" % (lineno(loc, instring), col(loc, instring))))
-
-def _defaultSuccessDebugAction(instring, startloc, endloc, expr, toks):
-    print("Matched " + _ustr(expr) + " -> " + str(toks.asList()))
-
-def _defaultExceptionDebugAction(instring, loc, expr, exc):
-    print("Exception raised:" + _ustr(exc))
-
-def nullDebugAction(*args):
-    """'Do-nothing' debug action, to suppress debugging output during parsing."""
-    pass
-
-# Only works on Python 3.x - nonlocal is toxic to Python 2 installs
-#~ 'decorator to trim function calls to match the arity of the target'
-#~ def _trim_arity(func, maxargs=3):
-    #~ if func in singleArgBuiltins:
-        #~ return lambda s,l,t: func(t)
-    #~ limit = 0
-    #~ foundArity = False
-    #~ def wrapper(*args):
-        #~ nonlocal limit,foundArity
-        #~ while 1:
-            #~ try:
-                #~ ret = func(*args[limit:])
-                #~ foundArity = True
-                #~ return ret
-            #~ except TypeError:
-                #~ if limit == maxargs or foundArity:
-                    #~ raise
-                #~ limit += 1
-                #~ continue
-    #~ return wrapper
-
-# this version is Python 2.x-3.x cross-compatible
-'decorator to trim function calls to match the arity of the target'
-def _trim_arity(func, maxargs=2):
-    if func in singleArgBuiltins:
-        return lambda s, l, t: func(t)
-    limit = [0]
-    foundArity = [False]
-
-    # traceback return data structure changed in Py3.5 - normalize back to plain tuples
-    if system_version[:2] >= (3, 5):
-        def extract_stack(limit=0):
-            # special handling for Python 3.5.0 - extra deep call stack by 1
-            offset = -3 if system_version == (3, 5, 0) else -2
-            frame_summary = traceback.extract_stack(limit=-offset + limit - 1)[offset]
-            return [frame_summary[:2]]
-        def extract_tb(tb, limit=0):
-            frames = traceback.extract_tb(tb, limit=limit)
-            frame_summary = frames[-1]
-            return [frame_summary[:2]]
-    else:
-        extract_stack = traceback.extract_stack
-        extract_tb = traceback.extract_tb
-
-    # synthesize what would be returned by traceback.extract_stack at the call to
-    # user's parse action 'func', so that we don't incur call penalty at parse time
-
-    LINE_DIFF = 6
-    # IF ANY CODE CHANGES, EVEN JUST COMMENTS OR BLANK LINES, BETWEEN THE NEXT LINE AND
-    # THE CALL TO FUNC INSIDE WRAPPER, LINE_DIFF MUST BE MODIFIED!!!!
-    this_line = extract_stack(limit=2)[-1]
-    pa_call_line_synth = (this_line[0], this_line[1] + LINE_DIFF)
-
-    def wrapper(*args):
-        while 1:
-            try:
-                ret = func(*args[limit[0]:])
-                foundArity[0] = True
-                return ret
-            except TypeError:
-                # re-raise TypeErrors if they did not come from our arity testing
-                if foundArity[0]:
-                    raise
-                else:
-                    try:
-                        tb = sys.exc_info()[-1]
-                        if not extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth:
-                            raise
-                    finally:
-                        try:
-                            del tb
-                        except NameError:
-                            pass
-
-                if limit[0] <= maxargs:
-                    limit[0] += 1
-                    continue
-                raise
-
-    # copy func name to wrapper for sensible debug output
-    func_name = "<parse action>"
-    try:
-        func_name = getattr(func, '__name__',
-                            getattr(func, '__class__').__name__)
-    except Exception:
-        func_name = str(func)
-    wrapper.__name__ = func_name
-
-    return wrapper
-
-
-class ParserElement(object):
-    """Abstract base level parser element class."""
-    DEFAULT_WHITE_CHARS = " \n\t\r"
-    verbose_stacktrace = False
-
-    @staticmethod
-    def setDefaultWhitespaceChars(chars):
-        r"""
-        Overrides the default whitespace chars
-
-        Example::
-
-            # default whitespace chars are space, <TAB> and newline
-            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def', 'ghi', 'jkl']
-
-            # change to just treat newline as significant
-            ParserElement.setDefaultWhitespaceChars(" \t")
-            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def']
-        """
-        ParserElement.DEFAULT_WHITE_CHARS = chars
-
-    @staticmethod
-    def inlineLiteralsUsing(cls):
-        """
-        Set class to be used for inclusion of string literals into a parser.
-
-        Example::
-
-            # default literal class used is Literal
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
-
-
-            # change to Suppress
-            ParserElement.inlineLiteralsUsing(Suppress)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '12', '31']
-        """
-        ParserElement._literalStringClass = cls
-
-    @classmethod
-    def _trim_traceback(cls, tb):
-        while tb.tb_next:
-            tb = tb.tb_next
-        return tb
-
-    def __init__(self, savelist=False):
-        self.parseAction = list()
-        self.failAction = None
-        # ~ self.name = "<unknown>"  # don't define self.name, let subclasses try/except upcall
-        self.strRepr = None
-        self.resultsName = None
-        self.saveAsList = savelist
-        self.skipWhitespace = True
-        self.whiteChars = set(ParserElement.DEFAULT_WHITE_CHARS)
-        self.copyDefaultWhiteChars = True
-        self.mayReturnEmpty = False # used when checking for left-recursion
-        self.keepTabs = False
-        self.ignoreExprs = list()
-        self.debug = False
-        self.streamlined = False
-        self.mayIndexError = True # used to optimize exception handling for subclasses that don't advance parse index
-        self.errmsg = ""
-        self.modalResults = True # used to mark results names as modal (report only last) or cumulative (list all)
-        self.debugActions = (None, None, None)  # custom debug actions
-        self.re = None
-        self.callPreparse = True # used to avoid redundant calls to preParse
-        self.callDuringTry = False
-
-    def copy(self):
-        """
-        Make a copy of this :class:`ParserElement`.  Useful for defining
-        different parse actions for the same parsing pattern, using copies of
-        the original parse element.
-
-        Example::
-
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            integerK = integer.copy().addParseAction(lambda toks: toks[0] * 1024) + Suppress("K")
-            integerM = integer.copy().addParseAction(lambda toks: toks[0] * 1024 * 1024) + Suppress("M")
-
-            print(OneOrMore(integerK | integerM | integer).parseString("5K 100 640K 256M"))
-
-        prints::
-
-            [5120, 100, 655360, 268435456]
-
-        Equivalent form of ``expr.copy()`` is just ``expr()``::
-
-            integerM = integer().addParseAction(lambda toks: toks[0] * 1024 * 1024) + Suppress("M")
-        """
-        cpy = copy.copy(self)
-        cpy.parseAction = self.parseAction[:]
-        cpy.ignoreExprs = self.ignoreExprs[:]
-        if self.copyDefaultWhiteChars:
-            cpy.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
-        return cpy
-
-    def setName(self, name):
-        """
-        Define name for this expression, makes debugging and exception messages clearer.
-
-        Example::
-
-            Word(nums).parseString("ABC")  # -> Exception: Expected W:(0123...) (at char 0), (line:1, col:1)
-            Word(nums).setName("integer").parseString("ABC")  # -> Exception: Expected integer (at char 0), (line:1, col:1)
-        """
-        self.name = name
-        self.errmsg = "Expected " + self.name
-        if __diag__.enable_debug_on_named_expressions:
-            self.setDebug()
-        return self
-
-    def setResultsName(self, name, listAllMatches=False):
-        """
-        Define name for referencing matching tokens as a nested attribute
-        of the returned parse results.
-        NOTE: this returns a *copy* of the original :class:`ParserElement` object;
-        this is so that the client can define a basic element, such as an
-        integer, and reference it in multiple places with different names.
-
-        You can also set results names using the abbreviated syntax,
-        ``expr("name")`` in place of ``expr.setResultsName("name")``
-        - see :class:`__call__`.
-
-        Example::
-
-            date_str = (integer.setResultsName("year") + '/'
-                        + integer.setResultsName("month") + '/'
-                        + integer.setResultsName("day"))
-
-            # equivalent form:
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-        """
-        return self._setResultsName(name, listAllMatches)
-
-    def _setResultsName(self, name, listAllMatches=False):
-        newself = self.copy()
-        if name.endswith("*"):
-            name = name[:-1]
-            listAllMatches = True
-        newself.resultsName = name
-        newself.modalResults = not listAllMatches
-        return newself
-
-    def setBreak(self, breakFlag=True):
-        """Method to invoke the Python pdb debugger when this element is
-           about to be parsed. Set ``breakFlag`` to True to enable, False to
-           disable.
-        """
-        if breakFlag:
-            _parseMethod = self._parse
-            def breaker(instring, loc, doActions=True, callPreParse=True):
-                import pdb
-                # this call to pdb.set_trace() is intentional, not a checkin error
-                pdb.set_trace()
-                return _parseMethod(instring, loc, doActions, callPreParse)
-            breaker._originalParseMethod = _parseMethod
-            self._parse = breaker
-        else:
-            if hasattr(self._parse, "_originalParseMethod"):
-                self._parse = self._parse._originalParseMethod
-        return self
-
-    def setParseAction(self, *fns, **kwargs):
-        """
-        Define one or more actions to perform when successfully matching parse element definition.
-        Parse action fn is a callable method with 0-3 arguments, called as ``fn(s, loc, toks)`` ,
-        ``fn(loc, toks)`` , ``fn(toks)`` , or just ``fn()`` , where:
-
-        - s   = the original string being parsed (see note below)
-        - loc = the location of the matching substring
-        - toks = a list of the matched tokens, packaged as a :class:`ParseResults` object
-
-        If the functions in fns modify the tokens, they can return them as the return
-        value from fn, and the modified list of tokens will replace the original.
-        Otherwise, fn does not need to return any value.
-
-        If None is passed as the parse action, all previously added parse actions for this
-        expression are cleared.
-
-        Optional keyword arguments:
-        - callDuringTry = (default= ``False``) indicate if parse action should be run during lookaheads and alternate testing
-
-        Note: the default parsing behavior is to expand tabs in the input string
-        before starting the parsing process.  See :class:`parseString for more
-        information on parsing strings containing ``<TAB>`` s, and suggested
-        methods to maintain a consistent view of the parsed string, the parse
-        location, and line and column positions within the parsed string.
-
-        Example::
-
-            integer = Word(nums)
-            date_str = integer + '/' + integer + '/' + integer
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
-
-            # use parse action to convert to ints at parse time
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            date_str = integer + '/' + integer + '/' + integer
-
-            # note that integer fields are now ints, not strings
-            date_str.parseString("1999/12/31")  # -> [1999, '/', 12, '/', 31]
-        """
-        if list(fns) == [None,]:
-            self.parseAction = []
-        else:
-            if not all(callable(fn) for fn in fns):
-                raise TypeError("parse actions must be callable")
-            self.parseAction = list(map(_trim_arity, list(fns)))
-            self.callDuringTry = kwargs.get("callDuringTry", False)
-        return self
-
-    def addParseAction(self, *fns, **kwargs):
-        """
-        Add one or more parse actions to expression's list of parse actions. See :class:`setParseAction`.
-
-        See examples in :class:`copy`.
-        """
-        self.parseAction += list(map(_trim_arity, list(fns)))
-        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
-        return self
-
-    def addCondition(self, *fns, **kwargs):
-        """Add a boolean predicate function to expression's list of parse actions. See
-        :class:`setParseAction` for function call signatures. Unlike ``setParseAction``,
-        functions passed to ``addCondition`` need to return boolean success/fail of the condition.
-
-        Optional keyword arguments:
-        - message = define a custom message to be used in the raised exception
-        - fatal   = if True, will raise ParseFatalException to stop parsing immediately; otherwise will raise ParseException
-
-        Example::
-
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            year_int = integer.copy()
-            year_int.addCondition(lambda toks: toks[0] >= 2000, message="Only support years 2000 and later")
-            date_str = year_int + '/' + integer + '/' + integer
-
-            result = date_str.parseString("1999/12/31")  # -> Exception: Only support years 2000 and later (at char 0), (line:1, col:1)
-        """
-        for fn in fns:
-            self.parseAction.append(conditionAsParseAction(fn, message=kwargs.get('message'),
-                                                           fatal=kwargs.get('fatal', False)))
-
-        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
-        return self
-
-    def setFailAction(self, fn):
-        """Define action to perform if parsing fails at this expression.
-           Fail acton fn is a callable function that takes the arguments
-           ``fn(s, loc, expr, err)`` where:
-           - s = string being parsed
-           - loc = location where expression match was attempted and failed
-           - expr = the parse expression that failed
-           - err = the exception thrown
-           The function returns no value.  It may throw :class:`ParseFatalException`
-           if it is desired to stop parsing immediately."""
-        self.failAction = fn
-        return self
-
-    def _skipIgnorables(self, instring, loc):
-        exprsFound = True
-        while exprsFound:
-            exprsFound = False
-            for e in self.ignoreExprs:
-                try:
-                    while 1:
-                        loc, dummy = e._parse(instring, loc)
-                        exprsFound = True
-                except ParseException:
-                    pass
-        return loc
-
-    def preParse(self, instring, loc):
-        if self.ignoreExprs:
-            loc = self._skipIgnorables(instring, loc)
-
-        if self.skipWhitespace:
-            wt = self.whiteChars
-            instrlen = len(instring)
-            while loc < instrlen and instring[loc] in wt:
-                loc += 1
-
-        return loc
-
-    def parseImpl(self, instring, loc, doActions=True):
-        return loc, []
-
-    def postParse(self, instring, loc, tokenlist):
-        return tokenlist
-
-    # ~ @profile
-    def _parseNoCache(self, instring, loc, doActions=True, callPreParse=True):
-        TRY, MATCH, FAIL = 0, 1, 2
-        debugging = (self.debug)  # and doActions)
-
-        if debugging or self.failAction:
-            # ~ print ("Match", self, "at loc", loc, "(%d, %d)" % (lineno(loc, instring), col(loc, instring)))
-            if self.debugActions[TRY]:
-                self.debugActions[TRY](instring, loc, self)
-            try:
-                if callPreParse and self.callPreparse:
-                    preloc = self.preParse(instring, loc)
-                else:
-                    preloc = loc
-                tokensStart = preloc
-                if self.mayIndexError or preloc >= len(instring):
-                    try:
-                        loc, tokens = self.parseImpl(instring, preloc, doActions)
-                    except IndexError:
-                        raise ParseException(instring, len(instring), self.errmsg, self)
-                else:
-                    loc, tokens = self.parseImpl(instring, preloc, doActions)
-            except Exception as err:
-                # ~ print ("Exception raised:", err)
-                if self.debugActions[FAIL]:
-                    self.debugActions[FAIL](instring, tokensStart, self, err)
-                if self.failAction:
-                    self.failAction(instring, tokensStart, self, err)
-                raise
-        else:
-            if callPreParse and self.callPreparse:
-                preloc = self.preParse(instring, loc)
-            else:
-                preloc = loc
-            tokensStart = preloc
-            if self.mayIndexError or preloc >= len(instring):
-                try:
-                    loc, tokens = self.parseImpl(instring, preloc, doActions)
-                except IndexError:
-                    raise ParseException(instring, len(instring), self.errmsg, self)
-            else:
-                loc, tokens = self.parseImpl(instring, preloc, doActions)
-
-        tokens = self.postParse(instring, loc, tokens)
-
-        retTokens = ParseResults(tokens, self.resultsName, asList=self.saveAsList, modal=self.modalResults)
-        if self.parseAction and (doActions or self.callDuringTry):
-            if debugging:
-                try:
-                    for fn in self.parseAction:
-                        try:
-                            tokens = fn(instring, tokensStart, retTokens)
-                        except IndexError as parse_action_exc:
-                            exc = ParseException("exception raised in parse action")
-                            exc.__cause__ = parse_action_exc
-                            raise exc
-
-                        if tokens is not None and tokens is not retTokens:
-                            retTokens = ParseResults(tokens,
-                                                      self.resultsName,
-                                                      asList=self.saveAsList and isinstance(tokens, (ParseResults, list)),
-                                                      modal=self.modalResults)
-                except Exception as err:
-                    # ~ print "Exception raised in user parse action:", err
-                    if self.debugActions[FAIL]:
-                        self.debugActions[FAIL](instring, tokensStart, self, err)
-                    raise
-            else:
-                for fn in self.parseAction:
-                    try:
-                        tokens = fn(instring, tokensStart, retTokens)
-                    except IndexError as parse_action_exc:
-                        exc = ParseException("exception raised in parse action")
-                        exc.__cause__ = parse_action_exc
-                        raise exc
-
-                    if tokens is not None and tokens is not retTokens:
-                        retTokens = ParseResults(tokens,
-                                                  self.resultsName,
-                                                  asList=self.saveAsList and isinstance(tokens, (ParseResults, list)),
-                                                  modal=self.modalResults)
-        if debugging:
-            # ~ print ("Matched", self, "->", retTokens.asList())
-            if self.debugActions[MATCH]:
-                self.debugActions[MATCH](instring, tokensStart, loc, self, retTokens)
-
-        return loc, retTokens
-
-    def tryParse(self, instring, loc):
-        try:
-            return self._parse(instring, loc, doActions=False)[0]
-        except ParseFatalException:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-    def canParseNext(self, instring, loc):
-        try:
-            self.tryParse(instring, loc)
-        except (ParseException, IndexError):
-            return False
-        else:
-            return True
-
-    class _UnboundedCache(object):
-        def __init__(self):
-            cache = {}
-            self.not_in_cache = not_in_cache = object()
-
-            def get(self, key):
-                return cache.get(key, not_in_cache)
-
-            def set(self, key, value):
-                cache[key] = value
-
-            def clear(self):
-                cache.clear()
-
-            def cache_len(self):
-                return len(cache)
-
-            self.get = types.MethodType(get, self)
-            self.set = types.MethodType(set, self)
-            self.clear = types.MethodType(clear, self)
-            self.__len__ = types.MethodType(cache_len, self)
-
-    if _OrderedDict is not None:
-        class _FifoCache(object):
-            def __init__(self, size):
-                self.not_in_cache = not_in_cache = object()
-
-                cache = _OrderedDict()
-
-                def get(self, key):
-                    return cache.get(key, not_in_cache)
-
-                def set(self, key, value):
-                    cache[key] = value
-                    while len(cache) > size:
-                        try:
-                            cache.popitem(False)
-                        except KeyError:
-                            pass
-
-                def clear(self):
-                    cache.clear()
-
-                def cache_len(self):
-                    return len(cache)
-
-                self.get = types.MethodType(get, self)
-                self.set = types.MethodType(set, self)
-                self.clear = types.MethodType(clear, self)
-                self.__len__ = types.MethodType(cache_len, self)
-
-    else:
-        class _FifoCache(object):
-            def __init__(self, size):
-                self.not_in_cache = not_in_cache = object()
-
-                cache = {}
-                key_fifo = collections.deque([], size)
-
-                def get(self, key):
-                    return cache.get(key, not_in_cache)
-
-                def set(self, key, value):
-                    cache[key] = value
-                    while len(key_fifo) > size:
-                        cache.pop(key_fifo.popleft(), None)
-                    key_fifo.append(key)
-
-                def clear(self):
-                    cache.clear()
-                    key_fifo.clear()
-
-                def cache_len(self):
-                    return len(cache)
-
-                self.get = types.MethodType(get, self)
-                self.set = types.MethodType(set, self)
-                self.clear = types.MethodType(clear, self)
-                self.__len__ = types.MethodType(cache_len, self)
-
-    # argument cache for optimizing repeated calls when backtracking through recursive expressions
-    packrat_cache = {} # this is set later by enabledPackrat(); this is here so that resetCache() doesn't fail
-    packrat_cache_lock = RLock()
-    packrat_cache_stats = [0, 0]
-
-    # this method gets repeatedly called during backtracking with the same arguments -
-    # we can cache these arguments and save ourselves the trouble of re-parsing the contained expression
-    def _parseCache(self, instring, loc, doActions=True, callPreParse=True):
-        HIT, MISS = 0, 1
-        lookup = (self, instring, loc, callPreParse, doActions)
-        with ParserElement.packrat_cache_lock:
-            cache = ParserElement.packrat_cache
-            value = cache.get(lookup)
-            if value is cache.not_in_cache:
-                ParserElement.packrat_cache_stats[MISS] += 1
-                try:
-                    value = self._parseNoCache(instring, loc, doActions, callPreParse)
-                except ParseBaseException as pe:
-                    # cache a copy of the exception, without the traceback
-                    cache.set(lookup, pe.__class__(*pe.args))
-                    raise
-                else:
-                    cache.set(lookup, (value[0], value[1].copy()))
-                    return value
-            else:
-                ParserElement.packrat_cache_stats[HIT] += 1
-                if isinstance(value, Exception):
-                    raise value
-                return value[0], value[1].copy()
-
-    _parse = _parseNoCache
-
-    @staticmethod
-    def resetCache():
-        ParserElement.packrat_cache.clear()
-        ParserElement.packrat_cache_stats[:] = [0] * len(ParserElement.packrat_cache_stats)
-
-    _packratEnabled = False
-    @staticmethod
-    def enablePackrat(cache_size_limit=128):
-        """Enables "packrat" parsing, which adds memoizing to the parsing logic.
-           Repeated parse attempts at the same string location (which happens
-           often in many complex grammars) can immediately return a cached value,
-           instead of re-executing parsing/validating code.  Memoizing is done of
-           both valid results and parsing exceptions.
-
-           Parameters:
-
-           - cache_size_limit - (default= ``128``) - if an integer value is provided
-             will limit the size of the packrat cache; if None is passed, then
-             the cache size will be unbounded; if 0 is passed, the cache will
-             be effectively disabled.
-
-           This speedup may break existing programs that use parse actions that
-           have side-effects.  For this reason, packrat parsing is disabled when
-           you first import pyparsing.  To activate the packrat feature, your
-           program must call the class method :class:`ParserElement.enablePackrat`.
-           For best results, call ``enablePackrat()`` immediately after
-           importing pyparsing.
-
-           Example::
-
-               import pyparsing
-               pyparsing.ParserElement.enablePackrat()
-        """
-        if not ParserElement._packratEnabled:
-            ParserElement._packratEnabled = True
-            if cache_size_limit is None:
-                ParserElement.packrat_cache = ParserElement._UnboundedCache()
-            else:
-                ParserElement.packrat_cache = ParserElement._FifoCache(cache_size_limit)
-            ParserElement._parse = ParserElement._parseCache
-
-    def parseString(self, instring, parseAll=False):
-        """
-        Execute the parse expression with the given string.
-        This is the main interface to the client code, once the complete
-        expression has been built.
-
-        Returns the parsed data as a :class:`ParseResults` object, which may be
-        accessed as a list, or as a dict or object with attributes if the given parser
-        includes results names.
-
-        If you want the grammar to require that the entire input string be
-        successfully parsed, then set ``parseAll`` to True (equivalent to ending
-        the grammar with ``StringEnd()``).
-
-        Note: ``parseString`` implicitly calls ``expandtabs()`` on the input string,
-        in order to report proper column numbers in parse actions.
-        If the input string contains tabs and
-        the grammar uses parse actions that use the ``loc`` argument to index into the
-        string being parsed, you can ensure you have a consistent view of the input
-        string by:
-
-        - calling ``parseWithTabs`` on your grammar before calling ``parseString``
-          (see :class:`parseWithTabs`)
-        - define your parse action using the full ``(s, loc, toks)`` signature, and
-          reference the input string using the parse action's ``s`` argument
-        - explictly expand the tabs in your input string before calling
-          ``parseString``
-
-        Example::
-
-            Word('a').parseString('aaaaabaaa')  # -> ['aaaaa']
-            Word('a').parseString('aaaaabaaa', parseAll=True)  # -> Exception: Expected end of text
-        """
-        ParserElement.resetCache()
-        if not self.streamlined:
-            self.streamline()
-            # ~ self.saveAsList = True
-        for e in self.ignoreExprs:
-            e.streamline()
-        if not self.keepTabs:
-            instring = instring.expandtabs()
-        try:
-            loc, tokens = self._parse(instring, 0)
-            if parseAll:
-                loc = self.preParse(instring, loc)
-                se = Empty() + StringEnd()
-                se._parse(instring, loc)
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clearing out pyparsing internal stack trace
-                if getattr(exc, '__traceback__', None) is not None:
-                    exc.__traceback__ = self._trim_traceback(exc.__traceback__)
-                raise exc
-        else:
-            return tokens
-
-    def scanString(self, instring, maxMatches=_MAX_INT, overlap=False):
-        """
-        Scan the input string for expression matches.  Each match will return the
-        matching tokens, start location, and end location.  May be called with optional
-        ``maxMatches`` argument, to clip scanning after 'n' matches are found.  If
-        ``overlap`` is specified, then overlapping matches will be reported.
-
-        Note that the start and end locations are reported relative to the string
-        being parsed.  See :class:`parseString` for more information on parsing
-        strings with embedded tabs.
-
-        Example::
-
-            source = "sldjf123lsdjjkf345sldkjf879lkjsfd987"
-            print(source)
-            for tokens, start, end in Word(alphas).scanString(source):
-                print(' '*start + '^'*(end-start))
-                print(' '*start + tokens[0])
-
-        prints::
-
-            sldjf123lsdjjkf345sldkjf879lkjsfd987
-            ^^^^^
-            sldjf
-                    ^^^^^^^
-                    lsdjjkf
-                              ^^^^^^
-                              sldkjf
-                                       ^^^^^^
-                                       lkjsfd
-        """
-        if not self.streamlined:
-            self.streamline()
-        for e in self.ignoreExprs:
-            e.streamline()
-
-        if not self.keepTabs:
-            instring = _ustr(instring).expandtabs()
-        instrlen = len(instring)
-        loc = 0
-        preparseFn = self.preParse
-        parseFn = self._parse
-        ParserElement.resetCache()
-        matches = 0
-        try:
-            while loc <= instrlen and matches < maxMatches:
-                try:
-                    preloc = preparseFn(instring, loc)
-                    nextLoc, tokens = parseFn(instring, preloc, callPreParse=False)
-                except ParseException:
-                    loc = preloc + 1
-                else:
-                    if nextLoc > loc:
-                        matches += 1
-                        yield tokens, preloc, nextLoc
-                        if overlap:
-                            nextloc = preparseFn(instring, loc)
-                            if nextloc > loc:
-                                loc = nextLoc
-                            else:
-                                loc += 1
-                        else:
-                            loc = nextLoc
-                    else:
-                        loc = preloc + 1
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clearing out pyparsing internal stack trace
-                if getattr(exc, '__traceback__', None) is not None:
-                    exc.__traceback__ = self._trim_traceback(exc.__traceback__)
-                raise exc
-
-    def transformString(self, instring):
-        """
-        Extension to :class:`scanString`, to modify matching text with modified tokens that may
-        be returned from a parse action.  To use ``transformString``, define a grammar and
-        attach a parse action to it that modifies the returned token list.
-        Invoking ``transformString()`` on a target string will then scan for matches,
-        and replace the matched text patterns according to the logic in the parse
-        action.  ``transformString()`` returns the resulting transformed string.
-
-        Example::
-
-            wd = Word(alphas)
-            wd.setParseAction(lambda toks: toks[0].title())
-
-            print(wd.transformString("now is the winter of our discontent made glorious summer by this sun of york."))
-
-        prints::
-
-            Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York.
-        """
-        out = []
-        lastE = 0
-        # force preservation of <TAB>s, to minimize unwanted transformation of string, and to
-        # keep string locs straight between transformString and scanString
-        self.keepTabs = True
-        try:
-            for t, s, e in self.scanString(instring):
-                out.append(instring[lastE:s])
-                if t:
-                    if isinstance(t, ParseResults):
-                        out += t.asList()
-                    elif isinstance(t, list):
-                        out += t
-                    else:
-                        out.append(t)
-                lastE = e
-            out.append(instring[lastE:])
-            out = [o for o in out if o]
-            return "".join(map(_ustr, _flatten(out)))
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clearing out pyparsing internal stack trace
-                if getattr(exc, '__traceback__', None) is not None:
-                    exc.__traceback__ = self._trim_traceback(exc.__traceback__)
-                raise exc
-
-    def searchString(self, instring, maxMatches=_MAX_INT):
-        """
-        Another extension to :class:`scanString`, simplifying the access to the tokens found
-        to match the given parse expression.  May be called with optional
-        ``maxMatches`` argument, to clip searching after 'n' matches are found.
-
-        Example::
-
-            # a capitalized word starts with an uppercase letter, followed by zero or more lowercase letters
-            cap_word = Word(alphas.upper(), alphas.lower())
-
-            print(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity"))
-
-            # the sum() builtin can be used to merge results into a single ParseResults object
-            print(sum(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity")))
-
-        prints::
-
-            [['More'], ['Iron'], ['Lead'], ['Gold'], ['I'], ['Electricity']]
-            ['More', 'Iron', 'Lead', 'Gold', 'I', 'Electricity']
-        """
-        try:
-            return ParseResults([t for t, s, e in self.scanString(instring, maxMatches)])
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clearing out pyparsing internal stack trace
-                if getattr(exc, '__traceback__', None) is not None:
-                    exc.__traceback__ = self._trim_traceback(exc.__traceback__)
-                raise exc
-
-    def split(self, instring, maxsplit=_MAX_INT, includeSeparators=False):
-        """
-        Generator method to split a string using the given expression as a separator.
-        May be called with optional ``maxsplit`` argument, to limit the number of splits;
-        and the optional ``includeSeparators`` argument (default= ``False``), if the separating
-        matching text should be included in the split results.
-
-        Example::
-
-            punc = oneOf(list(".,;:/-!?"))
-            print(list(punc.split("This, this?, this sentence, is badly punctuated!")))
-
-        prints::
-
-            ['This', ' this', '', ' this sentence', ' is badly punctuated', '']
-        """
-        splits = 0
-        last = 0
-        for t, s, e in self.scanString(instring, maxMatches=maxsplit):
-            yield instring[last:s]
-            if includeSeparators:
-                yield t[0]
-            last = e
-        yield instring[last:]
-
-    def __add__(self, other):
-        """
-        Implementation of + operator - returns :class:`And`. Adding strings to a ParserElement
-        converts them to :class:`Literal`s by default.
-
-        Example::
-
-            greet = Word(alphas) + "," + Word(alphas) + "!"
-            hello = "Hello, World!"
-            print (hello, "->", greet.parseString(hello))
-
-        prints::
-
-            Hello, World! -> ['Hello', ',', 'World', '!']
-
-        ``...`` may be used as a parse expression as a short form of :class:`SkipTo`.
-
-            Literal('start') + ... + Literal('end')
-
-        is equivalent to:
-
-            Literal('start') + SkipTo('end')("_skipped*") + Literal('end')
-
-        Note that the skipped text is returned with '_skipped' as a results name,
-        and to support having multiple skips in the same parser, the value returned is
-        a list of all skipped text.
-        """
-        if other is Ellipsis:
-            return _PendingSkip(self)
-
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return And([self, other])
-
-    def __radd__(self, other):
-        """
-        Implementation of + operator when left operand is not a :class:`ParserElement`
-        """
-        if other is Ellipsis:
-            return SkipTo(self)("_skipped*") + self
-
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return other + self
-
-    def __sub__(self, other):
-        """
-        Implementation of - operator, returns :class:`And` with error stop
-        """
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return self + And._ErrorStop() + other
-
-    def __rsub__(self, other):
-        """
-        Implementation of - operator when left operand is not a :class:`ParserElement`
-        """
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return other - self
-
-    def __mul__(self, other):
-        """
-        Implementation of * operator, allows use of ``expr * 3`` in place of
-        ``expr + expr + expr``.  Expressions may also me multiplied by a 2-integer
-        tuple, similar to ``{min, max}`` multipliers in regular expressions.  Tuples
-        may also include ``None`` as in:
-         - ``expr*(n, None)`` or ``expr*(n, )`` is equivalent
-              to ``expr*n + ZeroOrMore(expr)``
-              (read as "at least n instances of ``expr``")
-         - ``expr*(None, n)`` is equivalent to ``expr*(0, n)``
-              (read as "0 to n instances of ``expr``")
-         - ``expr*(None, None)`` is equivalent to ``ZeroOrMore(expr)``
-         - ``expr*(1, None)`` is equivalent to ``OneOrMore(expr)``
-
-        Note that ``expr*(None, n)`` does not raise an exception if
-        more than n exprs exist in the input stream; that is,
-        ``expr*(None, n)`` does not enforce a maximum number of expr
-        occurrences.  If this behavior is desired, then write
-        ``expr*(None, n) + ~expr``
-        """
-        if other is Ellipsis:
-            other = (0, None)
-        elif isinstance(other, tuple) and other[:1] == (Ellipsis,):
-            other = ((0, ) + other[1:] + (None,))[:2]
-
-        if isinstance(other, int):
-            minElements, optElements = other, 0
-        elif isinstance(other, tuple):
-            other = tuple(o if o is not Ellipsis else None for o in other)
-            other = (other + (None, None))[:2]
-            if other[0] is None:
-                other = (0, other[1])
-            if isinstance(other[0], int) and other[1] is None:
-                if other[0] == 0:
-                    return ZeroOrMore(self)
-                if other[0] == 1:
-                    return OneOrMore(self)
-                else:
-                    return self * other[0] + ZeroOrMore(self)
-            elif isinstance(other[0], int) and isinstance(other[1], int):
-                minElements, optElements = other
-                optElements -= minElements
-            else:
-                raise TypeError("cannot multiply 'ParserElement' and ('%s', '%s') objects", type(other[0]), type(other[1]))
-        else:
-            raise TypeError("cannot multiply 'ParserElement' and '%s' objects", type(other))
-
-        if minElements < 0:
-            raise ValueError("cannot multiply ParserElement by negative value")
-        if optElements < 0:
-            raise ValueError("second tuple value must be greater or equal to first tuple value")
-        if minElements == optElements == 0:
-            raise ValueError("cannot multiply ParserElement by 0 or (0, 0)")
-
-        if optElements:
-            def makeOptionalList(n):
-                if n > 1:
-                    return Optional(self + makeOptionalList(n - 1))
-                else:
-                    return Optional(self)
-            if minElements:
-                if minElements == 1:
-                    ret = self + makeOptionalList(optElements)
-                else:
-                    ret = And([self] * minElements) + makeOptionalList(optElements)
-            else:
-                ret = makeOptionalList(optElements)
-        else:
-            if minElements == 1:
-                ret = self
-            else:
-                ret = And([self] * minElements)
-        return ret
-
-    def __rmul__(self, other):
-        return self.__mul__(other)
-
-    def __or__(self, other):
-        """
-        Implementation of | operator - returns :class:`MatchFirst`
-        """
-        if other is Ellipsis:
-            return _PendingSkip(self, must_skip=True)
-
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return MatchFirst([self, other])
-
-    def __ror__(self, other):
-        """
-        Implementation of | operator when left operand is not a :class:`ParserElement`
-        """
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return other | self
-
-    def __xor__(self, other):
-        """
-        Implementation of ^ operator - returns :class:`Or`
-        """
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return Or([self, other])
-
-    def __rxor__(self, other):
-        """
-        Implementation of ^ operator when left operand is not a :class:`ParserElement`
-        """
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return other ^ self
-
-    def __and__(self, other):
-        """
-        Implementation of & operator - returns :class:`Each`
-        """
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return Each([self, other])
-
-    def __rand__(self, other):
-        """
-        Implementation of & operator when left operand is not a :class:`ParserElement`
-        """
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        if not isinstance(other, ParserElement):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                          SyntaxWarning, stacklevel=2)
-            return None
-        return other & self
-
-    def __invert__(self):
-        """
-        Implementation of ~ operator - returns :class:`NotAny`
-        """
-        return NotAny(self)
-
-    def __iter__(self):
-        # must implement __iter__ to override legacy use of sequential access to __getitem__ to
-        # iterate over a sequence
-        raise TypeError('%r object is not iterable' % self.__class__.__name__)
-
-    def __getitem__(self, key):
-        """
-        use ``[]`` indexing notation as a short form for expression repetition:
-         - ``expr[n]`` is equivalent to ``expr*n``
-         - ``expr[m, n]`` is equivalent to ``expr*(m, n)``
-         - ``expr[n, ...]`` or ``expr[n,]`` is equivalent
-              to ``expr*n + ZeroOrMore(expr)``
-              (read as "at least n instances of ``expr``")
-         - ``expr[..., n]`` is equivalent to ``expr*(0, n)``
-              (read as "0 to n instances of ``expr``")
-         - ``expr[...]`` and ``expr[0, ...]`` are equivalent to ``ZeroOrMore(expr)``
-         - ``expr[1, ...]`` is equivalent to ``OneOrMore(expr)``
-         ``None`` may be used in place of ``...``.
-
-        Note that ``expr[..., n]`` and ``expr[m, n]``do not raise an exception
-        if more than ``n`` ``expr``s exist in the input stream.  If this behavior is
-        desired, then write ``expr[..., n] + ~expr``.
-       """
-
-        # convert single arg keys to tuples
-        try:
-            if isinstance(key, str):
-                key = (key,)
-            iter(key)
-        except TypeError:
-            key = (key, key)
-
-        if len(key) > 2:
-            warnings.warn("only 1 or 2 index arguments supported ({0}{1})".format(key[:5],
-                                                                                '... [{0}]'.format(len(key))
-                                                                                if len(key) > 5 else ''))
-
-        # clip to 2 elements
-        ret = self * tuple(key[:2])
-        return ret
-
-    def __call__(self, name=None):
-        """
-        Shortcut for :class:`setResultsName`, with ``listAllMatches=False``.
-
-        If ``name`` is given with a trailing ``'*'`` character, then ``listAllMatches`` will be
-        passed as ``True``.
-
-        If ``name` is omitted, same as calling :class:`copy`.
-
-        Example::
-
-            # these are equivalent
-            userdata = Word(alphas).setResultsName("name") + Word(nums + "-").setResultsName("socsecno")
-            userdata = Word(alphas)("name") + Word(nums + "-")("socsecno")
-        """
-        if name is not None:
-            return self._setResultsName(name)
-        else:
-            return self.copy()
-
-    def suppress(self):
-        """
-        Suppresses the output of this :class:`ParserElement`; useful to keep punctuation from
-        cluttering up returned output.
-        """
-        return Suppress(self)
-
-    def leaveWhitespace(self):
-        """
-        Disables the skipping of whitespace before matching the characters in the
-        :class:`ParserElement`'s defined pattern.  This is normally only used internally by
-        the pyparsing module, but may be needed in some whitespace-sensitive grammars.
-        """
-        self.skipWhitespace = False
-        return self
-
-    def setWhitespaceChars(self, chars):
-        """
-        Overrides the default whitespace chars
-        """
-        self.skipWhitespace = True
-        self.whiteChars = chars
-        self.copyDefaultWhiteChars = False
-        return self
-
-    def parseWithTabs(self):
-        """
-        Overrides default behavior to expand ``<TAB>``s to spaces before parsing the input string.
-        Must be called before ``parseString`` when the input grammar contains elements that
-        match ``<TAB>`` characters.
-        """
-        self.keepTabs = True
-        return self
-
-    def ignore(self, other):
-        """
-        Define expression to be ignored (e.g., comments) while doing pattern
-        matching; may be called repeatedly, to define multiple comment or other
-        ignorable patterns.
-
-        Example::
-
-            patt = OneOrMore(Word(alphas))
-            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj']
-
-            patt.ignore(cStyleComment)
-            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj', 'lskjd']
-        """
-        if isinstance(other, basestring):
-            other = Suppress(other)
-
-        if isinstance(other, Suppress):
-            if other not in self.ignoreExprs:
-                self.ignoreExprs.append(other)
-        else:
-            self.ignoreExprs.append(Suppress(other.copy()))
-        return self
-
-    def setDebugActions(self, startAction, successAction, exceptionAction):
-        """
-        Enable display of debugging messages while doing pattern matching.
-        """
-        self.debugActions = (startAction or _defaultStartDebugAction,
-                             successAction or _defaultSuccessDebugAction,
-                             exceptionAction or _defaultExceptionDebugAction)
-        self.debug = True
-        return self
-
-    def setDebug(self, flag=True):
-        """
-        Enable display of debugging messages while doing pattern matching.
-        Set ``flag`` to True to enable, False to disable.
-
-        Example::
-
-            wd = Word(alphas).setName("alphaword")
-            integer = Word(nums).setName("numword")
-            term = wd | integer
-
-            # turn on debugging for wd
-            wd.setDebug()
-
-            OneOrMore(term).parseString("abc 123 xyz 890")
-
-        prints::
-
-            Match alphaword at loc 0(1,1)
-            Matched alphaword -> ['abc']
-            Match alphaword at loc 3(1,4)
-            Exception raised:Expected alphaword (at char 4), (line:1, col:5)
-            Match alphaword at loc 7(1,8)
-            Matched alphaword -> ['xyz']
-            Match alphaword at loc 11(1,12)
-            Exception raised:Expected alphaword (at char 12), (line:1, col:13)
-            Match alphaword at loc 15(1,16)
-            Exception raised:Expected alphaword (at char 15), (line:1, col:16)
-
-        The output shown is that produced by the default debug actions - custom debug actions can be
-        specified using :class:`setDebugActions`. Prior to attempting
-        to match the ``wd`` expression, the debugging message ``"Match <exprname> at loc <n>(<line>,<col>)"``
-        is shown. Then if the parse succeeds, a ``"Matched"`` message is shown, or an ``"Exception raised"``
-        message is shown. Also note the use of :class:`setName` to assign a human-readable name to the expression,
-        which makes debugging and exception messages easier to understand - for instance, the default
-        name created for the :class:`Word` expression without calling ``setName`` is ``"W:(ABCD...)"``.
-        """
-        if flag:
-            self.setDebugActions(_defaultStartDebugAction, _defaultSuccessDebugAction, _defaultExceptionDebugAction)
-        else:
-            self.debug = False
-        return self
-
-    def __str__(self):
-        return self.name
-
-    def __repr__(self):
-        return _ustr(self)
-
-    def streamline(self):
-        self.streamlined = True
-        self.strRepr = None
-        return self
-
-    def checkRecursion(self, parseElementList):
-        pass
-
-    def validate(self, validateTrace=None):
-        """
-        Check defined expressions for valid structure, check for infinite recursive definitions.
-        """
-        self.checkRecursion([])
-
-    def parseFile(self, file_or_filename, parseAll=False):
-        """
-        Execute the parse expression on the given file or filename.
-        If a filename is specified (instead of a file object),
-        the entire file is opened, read, and closed before parsing.
-        """
-        try:
-            file_contents = file_or_filename.read()
-        except AttributeError:
-            with open(file_or_filename, "r") as f:
-                file_contents = f.read()
-        try:
-            return self.parseString(file_contents, parseAll)
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clearing out pyparsing internal stack trace
-                if getattr(exc, '__traceback__', None) is not None:
-                    exc.__traceback__ = self._trim_traceback(exc.__traceback__)
-                raise exc
-
-    def __eq__(self, other):
-        if self is other:
-            return True
-        elif isinstance(other, basestring):
-            return self.matches(other)
-        elif isinstance(other, ParserElement):
-            return vars(self) == vars(other)
-        return False
-
-    def __ne__(self, other):
-        return not (self == other)
-
-    def __hash__(self):
-        return id(self)
-
-    def __req__(self, other):
-        return self == other
-
-    def __rne__(self, other):
-        return not (self == other)
-
-    def matches(self, testString, parseAll=True):
-        """
-        Method for quick testing of a parser against a test string. Good for simple
-        inline microtests of sub expressions while building up larger parser.
-
-        Parameters:
-         - testString - to test against this expression for a match
-         - parseAll - (default= ``True``) - flag to pass to :class:`parseString` when running tests
-
-        Example::
-
-            expr = Word(nums)
-            assert expr.matches("100")
-        """
-        try:
-            self.parseString(_ustr(testString), parseAll=parseAll)
-            return True
-        except ParseBaseException:
-            return False
-
-    def runTests(self, tests, parseAll=True, comment='#',
-                 fullDump=True, printResults=True, failureTests=False, postParse=None,
-                 file=None):
-        """
-        Execute the parse expression on a series of test strings, showing each
-        test, the parsed results or where the parse failed. Quick and easy way to
-        run a parse expression against a list of sample strings.
-
-        Parameters:
-         - tests - a list of separate test strings, or a multiline string of test strings
-         - parseAll - (default= ``True``) - flag to pass to :class:`parseString` when running tests
-         - comment - (default= ``'#'``) - expression for indicating embedded comments in the test
-              string; pass None to disable comment filtering
-         - fullDump - (default= ``True``) - dump results as list followed by results names in nested outline;
-              if False, only dump nested list
-         - printResults - (default= ``True``) prints test output to stdout
-         - failureTests - (default= ``False``) indicates if these tests are expected to fail parsing
-         - postParse - (default= ``None``) optional callback for successful parse results; called as
-              `fn(test_string, parse_results)` and returns a string to be added to the test output
-         - file - (default=``None``) optional file-like object to which test output will be written;
-              if None, will default to ``sys.stdout``
-
-        Returns: a (success, results) tuple, where success indicates that all tests succeeded
-        (or failed if ``failureTests`` is True), and the results contain a list of lines of each
-        test's output
-
-        Example::
-
-            number_expr = pyparsing_common.number.copy()
-
-            result = number_expr.runTests('''
-                # unsigned integer
-                100
-                # negative integer
-                -100
-                # float with scientific notation
-                6.02e23
-                # integer with scientific notation
-                1e-12
-                ''')
-            print("Success" if result[0] else "Failed!")
-
-            result = number_expr.runTests('''
-                # stray character
-                100Z
-                # missing leading digit before '.'
-                -.100
-                # too many '.'
-                3.14.159
-                ''', failureTests=True)
-            print("Success" if result[0] else "Failed!")
-
-        prints::
-
-            # unsigned integer
-            100
-            [100]
-
-            # negative integer
-            -100
-            [-100]
-
-            # float with scientific notation
-            6.02e23
-            [6.02e+23]
-
-            # integer with scientific notation
-            1e-12
-            [1e-12]
-
-            Success
-
-            # stray character
-            100Z
-               ^
-            FAIL: Expected end of text (at char 3), (line:1, col:4)
-
-            # missing leading digit before '.'
-            -.100
-            ^
-            FAIL: Expected {real number with scientific notation | real number | signed integer} (at char 0), (line:1, col:1)
-
-            # too many '.'
-            3.14.159
-                ^
-            FAIL: Expected end of text (at char 4), (line:1, col:5)
-
-            Success
-
-        Each test string must be on a single line. If you want to test a string that spans multiple
-        lines, create a test like this::
-
-            expr.runTest(r"this is a test\\n of strings that spans \\n 3 lines")
-
-        (Note that this is a raw string literal, you must include the leading 'r'.)
-        """
-        if isinstance(tests, basestring):
-            tests = list(map(str.strip, tests.rstrip().splitlines()))
-        if isinstance(comment, basestring):
-            comment = Literal(comment)
-        if file is None:
-            file = sys.stdout
-        print_ = file.write
-
-        allResults = []
-        comments = []
-        success = True
-        NL = Literal(r'\n').addParseAction(replaceWith('\n')).ignore(quotedString)
-        BOM = u'\ufeff'
-        for t in tests:
-            if comment is not None and comment.matches(t, False) or comments and not t:
-                comments.append(t)
-                continue
-            if not t:
-                continue
-            out = ['\n' + '\n'.join(comments) if comments else '', t]
-            comments = []
-            try:
-                # convert newline marks to actual newlines, and strip leading BOM if present
-                t = NL.transformString(t.lstrip(BOM))
-                result = self.parseString(t, parseAll=parseAll)
-            except ParseBaseException as pe:
-                fatal = "(FATAL)" if isinstance(pe, ParseFatalException) else ""
-                if '\n' in t:
-                    out.append(line(pe.loc, t))
-                    out.append(' ' * (col(pe.loc, t) - 1) + '^' + fatal)
-                else:
-                    out.append(' ' * pe.loc + '^' + fatal)
-                out.append("FAIL: " + str(pe))
-                success = success and failureTests
-                result = pe
-            except Exception as exc:
-                out.append("FAIL-EXCEPTION: " + str(exc))
-                success = success and failureTests
-                result = exc
-            else:
-                success = success and not failureTests
-                if postParse is not None:
-                    try:
-                        pp_value = postParse(t, result)
-                        if pp_value is not None:
-                            if isinstance(pp_value, ParseResults):
-                                out.append(pp_value.dump())
-                            else:
-                                out.append(str(pp_value))
-                        else:
-                            out.append(result.dump())
-                    except Exception as e:
-                        out.append(result.dump(full=fullDump))
-                        out.append("{0} failed: {1}: {2}".format(postParse.__name__, type(e).__name__, e))
-                else:
-                    out.append(result.dump(full=fullDump))
-
-            if printResults:
-                if fullDump:
-                    out.append('')
-                print_('\n'.join(out))
-
-            allResults.append((t, result))
-
-        return success, allResults
-
-
-class _PendingSkip(ParserElement):
-    # internal placeholder class to hold a place were '...' is added to a parser element,
-    # once another ParserElement is added, this placeholder will be replaced with a SkipTo
-    def __init__(self, expr, must_skip=False):
-        super(_PendingSkip, self).__init__()
-        self.strRepr = str(expr + Empty()).replace('Empty', '...')
-        self.name = self.strRepr
-        self.anchor = expr
-        self.must_skip = must_skip
-
-    def __add__(self, other):
-        skipper = SkipTo(other).setName("...")("_skipped*")
-        if self.must_skip:
-            def must_skip(t):
-                if not t._skipped or t._skipped.asList() == ['']:
-                    del t[0]
-                    t.pop("_skipped", None)
-            def show_skip(t):
-                if t._skipped.asList()[-1:] == ['']:
-                    skipped = t.pop('_skipped')
-                    t['_skipped'] = 'missing <' + repr(self.anchor) + '>'
-            return (self.anchor + skipper().addParseAction(must_skip)
-                    | skipper().addParseAction(show_skip)) + other
-
-        return self.anchor + skipper + other
-
-    def __repr__(self):
-        return self.strRepr
-
-    def parseImpl(self, *args):
-        raise Exception("use of `...` expression without following SkipTo target expression")
-
-
-class Token(ParserElement):
-    """Abstract :class:`ParserElement` subclass, for defining atomic
-    matching patterns.
-    """
-    def __init__(self):
-        super(Token, self).__init__(savelist=False)
-
-
-class Empty(Token):
-    """An empty token, will always match.
-    """
-    def __init__(self):
-        super(Empty, self).__init__()
-        self.name = "Empty"
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-
-
-class NoMatch(Token):
-    """A token that will never match.
-    """
-    def __init__(self):
-        super(NoMatch, self).__init__()
-        self.name = "NoMatch"
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-        self.errmsg = "Unmatchable token"
-
-    def parseImpl(self, instring, loc, doActions=True):
-        raise ParseException(instring, loc, self.errmsg, self)
-
-
-class Literal(Token):
-    """Token to exactly match a specified string.
-
-    Example::
-
-        Literal('blah').parseString('blah')  # -> ['blah']
-        Literal('blah').parseString('blahfooblah')  # -> ['blah']
-        Literal('blah').parseString('bla')  # -> Exception: Expected "blah"
-
-    For case-insensitive matching, use :class:`CaselessLiteral`.
-
-    For keyword matching (force word break before and after the matched string),
-    use :class:`Keyword` or :class:`CaselessKeyword`.
-    """
-    def __init__(self, matchString):
-        super(Literal, self).__init__()
-        self.match = matchString
-        self.matchLen = len(matchString)
-        try:
-            self.firstMatchChar = matchString[0]
-        except IndexError:
-            warnings.warn("null string passed to Literal; use Empty() instead",
-                            SyntaxWarning, stacklevel=2)
-            self.__class__ = Empty
-        self.name = '"%s"' % _ustr(self.match)
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = False
-        self.mayIndexError = False
-
-        # Performance tuning: modify __class__ to select
-        # a parseImpl optimized for single-character check
-        if self.matchLen == 1 and type(self) is Literal:
-            self.__class__ = _SingleCharLiteral
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if instring[loc] == self.firstMatchChar and instring.startswith(self.match, loc):
-            return loc + self.matchLen, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class _SingleCharLiteral(Literal):
-    def parseImpl(self, instring, loc, doActions=True):
-        if instring[loc] == self.firstMatchChar:
-            return loc + 1, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-
-_L = Literal
-ParserElement._literalStringClass = Literal
-
-class Keyword(Token):
-    """Token to exactly match a specified string as a keyword, that is,
-    it must be immediately followed by a non-keyword character.  Compare
-    with :class:`Literal`:
-
-     - ``Literal("if")`` will match the leading ``'if'`` in
-       ``'ifAndOnlyIf'``.
-     - ``Keyword("if")`` will not; it will only match the leading
-       ``'if'`` in ``'if x=1'``, or ``'if(y==2)'``
-
-    Accepts two optional constructor arguments in addition to the
-    keyword string:
-
-     - ``identChars`` is a string of characters that would be valid
-       identifier characters, defaulting to all alphanumerics + "_" and
-       "$"
-     - ``caseless`` allows case-insensitive matching, default is ``False``.
-
-    Example::
-
-        Keyword("start").parseString("start")  # -> ['start']
-        Keyword("start").parseString("starting")  # -> Exception
-
-    For case-insensitive matching, use :class:`CaselessKeyword`.
-    """
-    DEFAULT_KEYWORD_CHARS = alphanums + "_$"
-
-    def __init__(self, matchString, identChars=None, caseless=False):
-        super(Keyword, self).__init__()
-        if identChars is None:
-            identChars = Keyword.DEFAULT_KEYWORD_CHARS
-        self.match = matchString
-        self.matchLen = len(matchString)
-        try:
-            self.firstMatchChar = matchString[0]
-        except IndexError:
-            warnings.warn("null string passed to Keyword; use Empty() instead",
-                          SyntaxWarning, stacklevel=2)
-        self.name = '"%s"' % self.match
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = False
-        self.mayIndexError = False
-        self.caseless = caseless
-        if caseless:
-            self.caselessmatch = matchString.upper()
-            identChars = identChars.upper()
-        self.identChars = set(identChars)
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if self.caseless:
-            if ((instring[loc:loc + self.matchLen].upper() == self.caselessmatch)
-                    and (loc >= len(instring) - self.matchLen
-                         or instring[loc + self.matchLen].upper() not in self.identChars)
-                    and (loc == 0
-                         or instring[loc - 1].upper() not in self.identChars)):
-                return loc + self.matchLen, self.match
-
-        else:
-            if instring[loc] == self.firstMatchChar:
-                if ((self.matchLen == 1 or instring.startswith(self.match, loc))
-                        and (loc >= len(instring) - self.matchLen
-                             or instring[loc + self.matchLen] not in self.identChars)
-                        and (loc == 0 or instring[loc - 1] not in self.identChars)):
-                    return loc + self.matchLen, self.match
-
-        raise ParseException(instring, loc, self.errmsg, self)
-
-    def copy(self):
-        c = super(Keyword, self).copy()
-        c.identChars = Keyword.DEFAULT_KEYWORD_CHARS
-        return c
-
-    @staticmethod
-    def setDefaultKeywordChars(chars):
-        """Overrides the default Keyword chars
-        """
-        Keyword.DEFAULT_KEYWORD_CHARS = chars
-
-class CaselessLiteral(Literal):
-    """Token to match a specified string, ignoring case of letters.
-    Note: the matched results will always be in the case of the given
-    match string, NOT the case of the input text.
-
-    Example::
-
-        OneOrMore(CaselessLiteral("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD', 'CMD']
-
-    (Contrast with example for :class:`CaselessKeyword`.)
-    """
-    def __init__(self, matchString):
-        super(CaselessLiteral, self).__init__(matchString.upper())
-        # Preserve the defining literal.
-        self.returnString = matchString
-        self.name = "'%s'" % self.returnString
-        self.errmsg = "Expected " + self.name
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if instring[loc:loc + self.matchLen].upper() == self.match:
-            return loc + self.matchLen, self.returnString
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class CaselessKeyword(Keyword):
-    """
-    Caseless version of :class:`Keyword`.
-
-    Example::
-
-        OneOrMore(CaselessKeyword("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD']
-
-    (Contrast with example for :class:`CaselessLiteral`.)
-    """
-    def __init__(self, matchString, identChars=None):
-        super(CaselessKeyword, self).__init__(matchString, identChars, caseless=True)
-
-class CloseMatch(Token):
-    """A variation on :class:`Literal` which matches "close" matches,
-    that is, strings with at most 'n' mismatching characters.
-    :class:`CloseMatch` takes parameters:
-
-     - ``match_string`` - string to be matched
-     - ``maxMismatches`` - (``default=1``) maximum number of
-       mismatches allowed to count as a match
-
-    The results from a successful parse will contain the matched text
-    from the input string and the following named results:
-
-     - ``mismatches`` - a list of the positions within the
-       match_string where mismatches were found
-     - ``original`` - the original match_string used to compare
-       against the input string
-
-    If ``mismatches`` is an empty list, then the match was an exact
-    match.
-
-    Example::
-
-        patt = CloseMatch("ATCATCGAATGGA")
-        patt.parseString("ATCATCGAAXGGA") # -> (['ATCATCGAAXGGA'], {'mismatches': [[9]], 'original': ['ATCATCGAATGGA']})
-        patt.parseString("ATCAXCGAAXGGA") # -> Exception: Expected 'ATCATCGAATGGA' (with up to 1 mismatches) (at char 0), (line:1, col:1)
-
-        # exact match
-        patt.parseString("ATCATCGAATGGA") # -> (['ATCATCGAATGGA'], {'mismatches': [[]], 'original': ['ATCATCGAATGGA']})
-
-        # close match allowing up to 2 mismatches
-        patt = CloseMatch("ATCATCGAATGGA", maxMismatches=2)
-        patt.parseString("ATCAXCGAAXGGA") # -> (['ATCAXCGAAXGGA'], {'mismatches': [[4, 9]], 'original': ['ATCATCGAATGGA']})
-    """
-    def __init__(self, match_string, maxMismatches=1):
-        super(CloseMatch, self).__init__()
-        self.name = match_string
-        self.match_string = match_string
-        self.maxMismatches = maxMismatches
-        self.errmsg = "Expected %r (with up to %d mismatches)" % (self.match_string, self.maxMismatches)
-        self.mayIndexError = False
-        self.mayReturnEmpty = False
-
-    def parseImpl(self, instring, loc, doActions=True):
-        start = loc
-        instrlen = len(instring)
-        maxloc = start + len(self.match_string)
-
-        if maxloc <= instrlen:
-            match_string = self.match_string
-            match_stringloc = 0
-            mismatches = []
-            maxMismatches = self.maxMismatches
-
-            for match_stringloc, s_m in enumerate(zip(instring[loc:maxloc], match_string)):
-                src, mat = s_m
-                if src != mat:
-                    mismatches.append(match_stringloc)
-                    if len(mismatches) > maxMismatches:
-                        break
-            else:
-                loc = match_stringloc + 1
-                results = ParseResults([instring[start:loc]])
-                results['original'] = match_string
-                results['mismatches'] = mismatches
-                return loc, results
-
-        raise ParseException(instring, loc, self.errmsg, self)
-
-
-class Word(Token):
-    """Token for matching words composed of allowed character sets.
-    Defined with string containing all allowed initial characters, an
-    optional string containing allowed body characters (if omitted,
-    defaults to the initial character set), and an optional minimum,
-    maximum, and/or exact length.  The default value for ``min`` is
-    1 (a minimum value < 1 is not valid); the default values for
-    ``max`` and ``exact`` are 0, meaning no maximum or exact
-    length restriction. An optional ``excludeChars`` parameter can
-    list characters that might be found in the input ``bodyChars``
-    string; useful to define a word of all printables except for one or
-    two characters, for instance.
-
-    :class:`srange` is useful for defining custom character set strings
-    for defining ``Word`` expressions, using range notation from
-    regular expression character sets.
-
-    A common mistake is to use :class:`Word` to match a specific literal
-    string, as in ``Word("Address")``. Remember that :class:`Word`
-    uses the string argument to define *sets* of matchable characters.
-    This expression would match "Add", "AAA", "dAred", or any other word
-    made up of the characters 'A', 'd', 'r', 'e', and 's'. To match an
-    exact literal string, use :class:`Literal` or :class:`Keyword`.
-
-    pyparsing includes helper strings for building Words:
-
-     - :class:`alphas`
-     - :class:`nums`
-     - :class:`alphanums`
-     - :class:`hexnums`
-     - :class:`alphas8bit` (alphabetic characters in ASCII range 128-255
-       - accented, tilded, umlauted, etc.)
-     - :class:`punc8bit` (non-alphabetic characters in ASCII range
-       128-255 - currency, symbols, superscripts, diacriticals, etc.)
-     - :class:`printables` (any non-whitespace character)
-
-    Example::
-
-        # a word composed of digits
-        integer = Word(nums) # equivalent to Word("0123456789") or Word(srange("0-9"))
-
-        # a word with a leading capital, and zero or more lowercase
-        capital_word = Word(alphas.upper(), alphas.lower())
-
-        # hostnames are alphanumeric, with leading alpha, and '-'
-        hostname = Word(alphas, alphanums + '-')
-
-        # roman numeral (not a strict parser, accepts invalid mix of characters)
-        roman = Word("IVXLCDM")
-
-        # any string of non-whitespace characters, except for ','
-        csv_value = Word(printables, excludeChars=",")
-    """
-    def __init__(self, initChars, bodyChars=None, min=1, max=0, exact=0, asKeyword=False, excludeChars=None):
-        super(Word, self).__init__()
-        if excludeChars:
-            excludeChars = set(excludeChars)
-            initChars = ''.join(c for c in initChars if c not in excludeChars)
-            if bodyChars:
-                bodyChars = ''.join(c for c in bodyChars if c not in excludeChars)
-        self.initCharsOrig = initChars
-        self.initChars = set(initChars)
-        if bodyChars:
-            self.bodyCharsOrig = bodyChars
-            self.bodyChars = set(bodyChars)
-        else:
-            self.bodyCharsOrig = initChars
-            self.bodyChars = set(initChars)
-
-        self.maxSpecified = max > 0
-
-        if min < 1:
-            raise ValueError("cannot specify a minimum length < 1; use Optional(Word()) if zero-length word is permitted")
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.asKeyword = asKeyword
-
-        if ' ' not in self.initCharsOrig + self.bodyCharsOrig and (min == 1 and max == 0 and exact == 0):
-            if self.bodyCharsOrig == self.initCharsOrig:
-                self.reString = "[%s]+" % _escapeRegexRangeChars(self.initCharsOrig)
-            elif len(self.initCharsOrig) == 1:
-                self.reString = "%s[%s]*" % (re.escape(self.initCharsOrig),
-                                             _escapeRegexRangeChars(self.bodyCharsOrig),)
-            else:
-                self.reString = "[%s][%s]*" % (_escapeRegexRangeChars(self.initCharsOrig),
-                                               _escapeRegexRangeChars(self.bodyCharsOrig),)
-            if self.asKeyword:
-                self.reString = r"\b" + self.reString + r"\b"
-
-            try:
-                self.re = re.compile(self.reString)
-            except Exception:
-                self.re = None
-            else:
-                self.re_match = self.re.match
-                self.__class__ = _WordRegex
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if instring[loc] not in self.initChars:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        start = loc
-        loc += 1
-        instrlen = len(instring)
-        bodychars = self.bodyChars
-        maxloc = start + self.maxLen
-        maxloc = min(maxloc, instrlen)
-        while loc < maxloc and instring[loc] in bodychars:
-            loc += 1
-
-        throwException = False
-        if loc - start < self.minLen:
-            throwException = True
-        elif self.maxSpecified and loc < instrlen and instring[loc] in bodychars:
-            throwException = True
-        elif self.asKeyword:
-            if (start > 0 and instring[start - 1] in bodychars
-                    or loc < instrlen and instring[loc] in bodychars):
-                throwException = True
-
-        if throwException:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-    def __str__(self):
-        try:
-            return super(Word, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-
-            def charsAsStr(s):
-                if len(s) > 4:
-                    return s[:4] + "..."
-                else:
-                    return s
-
-            if self.initCharsOrig != self.bodyCharsOrig:
-                self.strRepr = "W:(%s, %s)" % (charsAsStr(self.initCharsOrig), charsAsStr(self.bodyCharsOrig))
-            else:
-                self.strRepr = "W:(%s)" % charsAsStr(self.initCharsOrig)
-
-        return self.strRepr
-
-class _WordRegex(Word):
-    def parseImpl(self, instring, loc, doActions=True):
-        result = self.re_match(instring, loc)
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        return loc, result.group()
-
-
-class Char(_WordRegex):
-    """A short-cut class for defining ``Word(characters, exact=1)``,
-    when defining a match of any single character in a string of
-    characters.
-    """
-    def __init__(self, charset, asKeyword=False, excludeChars=None):
-        super(Char, self).__init__(charset, exact=1, asKeyword=asKeyword, excludeChars=excludeChars)
-        self.reString = "[%s]" % _escapeRegexRangeChars(''.join(self.initChars))
-        if asKeyword:
-            self.reString = r"\b%s\b" % self.reString
-        self.re = re.compile(self.reString)
-        self.re_match = self.re.match
-
-
-class Regex(Token):
-    r"""Token for matching strings that match a given regular
-    expression. Defined with string specifying the regular expression in
-    a form recognized by the stdlib Python  `re module <https://docs.python.org/3/library/re.html>`_.
-    If the given regex contains named groups (defined using ``(?P<name>...)``),
-    these will be preserved as named parse results.
-
-    If instead of the Python stdlib re module you wish to use a different RE module
-    (such as the `regex` module), you can replace it by either building your
-    Regex object with a compiled RE that was compiled using regex:
-
-    Example::
-
-        realnum = Regex(r"[+-]?\d+\.\d*")
-        date = Regex(r'(?P<year>\d{4})-(?P<month>\d\d?)-(?P<day>\d\d?)')
-        # ref: https://stackoverflow.com/questions/267399/how-do-you-match-only-valid-roman-numerals-with-a-regular-expression
-        roman = Regex(r"M{0,4}(CM|CD|D?{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})")
-
-        # use regex module instead of stdlib re module to construct a Regex using
-        # a compiled regular expression
-        import regex
-        parser = pp.Regex(regex.compile(r'[0-9]'))
-
-    """
-    def __init__(self, pattern, flags=0, asGroupList=False, asMatch=False):
-        """The parameters ``pattern`` and ``flags`` are passed
-        to the ``re.compile()`` function as-is. See the Python
-        `re module <https://docs.python.org/3/library/re.html>`_ module for an
-        explanation of the acceptable patterns and flags.
-        """
-        super(Regex, self).__init__()
-
-        if isinstance(pattern, basestring):
-            if not pattern:
-                warnings.warn("null string passed to Regex; use Empty() instead",
-                              SyntaxWarning, stacklevel=2)
-
-            self.pattern = pattern
-            self.flags = flags
-
-            try:
-                self.re = re.compile(self.pattern, self.flags)
-                self.reString = self.pattern
-            except sre_constants.error:
-                warnings.warn("invalid pattern (%s) passed to Regex" % pattern,
-                              SyntaxWarning, stacklevel=2)
-                raise
-
-        elif hasattr(pattern, 'pattern') and hasattr(pattern, 'match'):
-            self.re = pattern
-            self.pattern = self.reString = pattern.pattern
-            self.flags = flags
-
-        else:
-            raise TypeError("Regex may only be constructed with a string or a compiled RE object")
-
-        self.re_match = self.re.match
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.mayReturnEmpty = self.re_match("") is not None
-        self.asGroupList = asGroupList
-        self.asMatch = asMatch
-        if self.asGroupList:
-            self.parseImpl = self.parseImplAsGroupList
-        if self.asMatch:
-            self.parseImpl = self.parseImplAsMatch
-
-    def parseImpl(self, instring, loc, doActions=True):
-        result = self.re_match(instring, loc)
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        ret = ParseResults(result.group())
-        d = result.groupdict()
-        if d:
-            for k, v in d.items():
-                ret[k] = v
-        return loc, ret
-
-    def parseImplAsGroupList(self, instring, loc, doActions=True):
-        result = self.re_match(instring, loc)
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        ret = result.groups()
-        return loc, ret
-
-    def parseImplAsMatch(self, instring, loc, doActions=True):
-        result = self.re_match(instring, loc)
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        ret = result
-        return loc, ret
-
-    def __str__(self):
-        try:
-            return super(Regex, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "Re:(%s)" % repr(self.pattern)
-
-        return self.strRepr
-
-    def sub(self, repl):
-        r"""
-        Return Regex with an attached parse action to transform the parsed
-        result as if called using `re.sub(expr, repl, string) <https://docs.python.org/3/library/re.html#re.sub>`_.
-
-        Example::
-
-            make_html = Regex(r"(\w+):(.*?):").sub(r"<\1>\2</\1>")
-            print(make_html.transformString("h1:main title:"))
-            # prints "<h1>main title</h1>"
-        """
-        if self.asGroupList:
-            warnings.warn("cannot use sub() with Regex(asGroupList=True)",
-                          SyntaxWarning, stacklevel=2)
-            raise SyntaxError()
-
-        if self.asMatch and callable(repl):
-            warnings.warn("cannot use sub() with a callable with Regex(asMatch=True)",
-                          SyntaxWarning, stacklevel=2)
-            raise SyntaxError()
-
-        if self.asMatch:
-            def pa(tokens):
-                return tokens[0].expand(repl)
-        else:
-            def pa(tokens):
-                return self.re.sub(repl, tokens[0])
-        return self.addParseAction(pa)
-
-class QuotedString(Token):
-    r"""
-    Token for matching strings that are delimited by quoting characters.
-
-    Defined with the following parameters:
-
-        - quoteChar - string of one or more characters defining the
-          quote delimiting string
-        - escChar - character to escape quotes, typically backslash
-          (default= ``None``)
-        - escQuote - special quote sequence to escape an embedded quote
-          string (such as SQL's ``""`` to escape an embedded ``"``)
-          (default= ``None``)
-        - multiline - boolean indicating whether quotes can span
-          multiple lines (default= ``False``)
-        - unquoteResults - boolean indicating whether the matched text
-          should be unquoted (default= ``True``)
-        - endQuoteChar - string of one or more characters defining the
-          end of the quote delimited string (default= ``None``  => same as
-          quoteChar)
-        - convertWhitespaceEscapes - convert escaped whitespace
-          (``'\t'``, ``'\n'``, etc.) to actual whitespace
-          (default= ``True``)
-
-    Example::
-
-        qs = QuotedString('"')
-        print(qs.searchString('lsjdf "This is the quote" sldjf'))
-        complex_qs = QuotedString('{{', endQuoteChar='}}')
-        print(complex_qs.searchString('lsjdf {{This is the "quote"}} sldjf'))
-        sql_qs = QuotedString('"', escQuote='""')
-        print(sql_qs.searchString('lsjdf "This is the quote with ""embedded"" quotes" sldjf'))
-
-    prints::
-
-        [['This is the quote']]
-        [['This is the "quote"']]
-        [['This is the quote with "embedded" quotes']]
-    """
-    def __init__(self, quoteChar, escChar=None, escQuote=None, multiline=False,
-                 unquoteResults=True, endQuoteChar=None, convertWhitespaceEscapes=True):
-        super(QuotedString, self).__init__()
-
-        # remove white space from quote chars - wont work anyway
-        quoteChar = quoteChar.strip()
-        if not quoteChar:
-            warnings.warn("quoteChar cannot be the empty string", SyntaxWarning, stacklevel=2)
-            raise SyntaxError()
-
-        if endQuoteChar is None:
-            endQuoteChar = quoteChar
-        else:
-            endQuoteChar = endQuoteChar.strip()
-            if not endQuoteChar:
-                warnings.warn("endQuoteChar cannot be the empty string", SyntaxWarning, stacklevel=2)
-                raise SyntaxError()
-
-        self.quoteChar = quoteChar
-        self.quoteCharLen = len(quoteChar)
-        self.firstQuoteChar = quoteChar[0]
-        self.endQuoteChar = endQuoteChar
-        self.endQuoteCharLen = len(endQuoteChar)
-        self.escChar = escChar
-        self.escQuote = escQuote
-        self.unquoteResults = unquoteResults
-        self.convertWhitespaceEscapes = convertWhitespaceEscapes
-
-        if multiline:
-            self.flags = re.MULTILINE | re.DOTALL
-            self.pattern = r'%s(?:[^%s%s]' % (re.escape(self.quoteChar),
-                                              _escapeRegexRangeChars(self.endQuoteChar[0]),
-                                              (escChar is not None and _escapeRegexRangeChars(escChar) or ''))
-        else:
-            self.flags = 0
-            self.pattern = r'%s(?:[^%s\n\r%s]' % (re.escape(self.quoteChar),
-                                                  _escapeRegexRangeChars(self.endQuoteChar[0]),
-                                                  (escChar is not None and _escapeRegexRangeChars(escChar) or ''))
-        if len(self.endQuoteChar) > 1:
-            self.pattern += (
-                '|(?:' + ')|(?:'.join("%s[^%s]" % (re.escape(self.endQuoteChar[:i]),
-                                                   _escapeRegexRangeChars(self.endQuoteChar[i]))
-                                      for i in range(len(self.endQuoteChar) - 1, 0, -1)) + ')')
-
-        if escQuote:
-            self.pattern += (r'|(?:%s)' % re.escape(escQuote))
-        if escChar:
-            self.pattern += (r'|(?:%s.)' % re.escape(escChar))
-            self.escCharReplacePattern = re.escape(self.escChar) + "(.)"
-        self.pattern += (r')*%s' % re.escape(self.endQuoteChar))
-
-        try:
-            self.re = re.compile(self.pattern, self.flags)
-            self.reString = self.pattern
-            self.re_match = self.re.match
-        except sre_constants.error:
-            warnings.warn("invalid pattern (%s) passed to Regex" % self.pattern,
-                          SyntaxWarning, stacklevel=2)
-            raise
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.mayReturnEmpty = True
-
-    def parseImpl(self, instring, loc, doActions=True):
-        result = instring[loc] == self.firstQuoteChar and self.re_match(instring, loc) or None
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        ret = result.group()
-
-        if self.unquoteResults:
-
-            # strip off quotes
-            ret = ret[self.quoteCharLen: -self.endQuoteCharLen]
-
-            if isinstance(ret, basestring):
-                # replace escaped whitespace
-                if '\\' in ret and self.convertWhitespaceEscapes:
-                    ws_map = {
-                        r'\t': '\t',
-                        r'\n': '\n',
-                        r'\f': '\f',
-                        r'\r': '\r',
-                    }
-                    for wslit, wschar in ws_map.items():
-                        ret = ret.replace(wslit, wschar)
-
-                # replace escaped characters
-                if self.escChar:
-                    ret = re.sub(self.escCharReplacePattern, r"\g<1>", ret)
-
-                # replace escaped quotes
-                if self.escQuote:
-                    ret = ret.replace(self.escQuote, self.endQuoteChar)
-
-        return loc, ret
-
-    def __str__(self):
-        try:
-            return super(QuotedString, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "quoted string, starting with %s ending with %s" % (self.quoteChar, self.endQuoteChar)
-
-        return self.strRepr
-
-
-class CharsNotIn(Token):
-    """Token for matching words composed of characters *not* in a given
-    set (will include whitespace in matched characters if not listed in
-    the provided exclusion set - see example). Defined with string
-    containing all disallowed characters, and an optional minimum,
-    maximum, and/or exact length.  The default value for ``min`` is
-    1 (a minimum value < 1 is not valid); the default values for
-    ``max`` and ``exact`` are 0, meaning no maximum or exact
-    length restriction.
-
-    Example::
-
-        # define a comma-separated-value as anything that is not a ','
-        csv_value = CharsNotIn(',')
-        print(delimitedList(csv_value).parseString("dkls,lsdkjf,s12 34,@!#,213"))
-
-    prints::
-
-        ['dkls', 'lsdkjf', 's12 34', '@!#', '213']
-    """
-    def __init__(self, notChars, min=1, max=0, exact=0):
-        super(CharsNotIn, self).__init__()
-        self.skipWhitespace = False
-        self.notChars = notChars
-
-        if min < 1:
-            raise ValueError("cannot specify a minimum length < 1; use "
-                             "Optional(CharsNotIn()) if zero-length char group is permitted")
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = (self.minLen == 0)
-        self.mayIndexError = False
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if instring[loc] in self.notChars:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        start = loc
-        loc += 1
-        notchars = self.notChars
-        maxlen = min(start + self.maxLen, len(instring))
-        while loc < maxlen and instring[loc] not in notchars:
-            loc += 1
-
-        if loc - start < self.minLen:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-    def __str__(self):
-        try:
-            return super(CharsNotIn, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            if len(self.notChars) > 4:
-                self.strRepr = "!W:(%s...)" % self.notChars[:4]
-            else:
-                self.strRepr = "!W:(%s)" % self.notChars
-
-        return self.strRepr
-
-class White(Token):
-    """Special matching class for matching whitespace.  Normally,
-    whitespace is ignored by pyparsing grammars.  This class is included
-    when some whitespace structures are significant.  Define with
-    a string containing the whitespace characters to be matched; default
-    is ``" \\t\\r\\n"``.  Also takes optional ``min``,
-    ``max``, and ``exact`` arguments, as defined for the
-    :class:`Word` class.
-    """
-    whiteStrs = {
-        ' ' : '<SP>',
-        '\t': '<TAB>',
-        '\n': '<LF>',
-        '\r': '<CR>',
-        '\f': '<FF>',
-        u'\u00A0': '<NBSP>',
-        u'\u1680': '<OGHAM_SPACE_MARK>',
-        u'\u180E': '<MONGOLIAN_VOWEL_SEPARATOR>',
-        u'\u2000': '<EN_QUAD>',
-        u'\u2001': '<EM_QUAD>',
-        u'\u2002': '<EN_SPACE>',
-        u'\u2003': '<EM_SPACE>',
-        u'\u2004': '<THREE-PER-EM_SPACE>',
-        u'\u2005': '<FOUR-PER-EM_SPACE>',
-        u'\u2006': '<SIX-PER-EM_SPACE>',
-        u'\u2007': '<FIGURE_SPACE>',
-        u'\u2008': '<PUNCTUATION_SPACE>',
-        u'\u2009': '<THIN_SPACE>',
-        u'\u200A': '<HAIR_SPACE>',
-        u'\u200B': '<ZERO_WIDTH_SPACE>',
-        u'\u202F': '<NNBSP>',
-        u'\u205F': '<MMSP>',
-        u'\u3000': '<IDEOGRAPHIC_SPACE>',
-        }
-    def __init__(self, ws=" \t\r\n", min=1, max=0, exact=0):
-        super(White, self).__init__()
-        self.matchWhite = ws
-        self.setWhitespaceChars("".join(c for c in self.whiteChars if c not in self.matchWhite))
-        # ~ self.leaveWhitespace()
-        self.name = ("".join(White.whiteStrs[c] for c in self.matchWhite))
-        self.mayReturnEmpty = True
-        self.errmsg = "Expected " + self.name
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if instring[loc] not in self.matchWhite:
-            raise ParseException(instring, loc, self.errmsg, self)
-        start = loc
-        loc += 1
-        maxloc = start + self.maxLen
-        maxloc = min(maxloc, len(instring))
-        while loc < maxloc and instring[loc] in self.matchWhite:
-            loc += 1
-
-        if loc - start < self.minLen:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-
-class _PositionToken(Token):
-    def __init__(self):
-        super(_PositionToken, self).__init__()
-        self.name = self.__class__.__name__
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-
-class GoToColumn(_PositionToken):
-    """Token to advance to a specific column of input text; useful for
-    tabular report scraping.
-    """
-    def __init__(self, colno):
-        super(GoToColumn, self).__init__()
-        self.col = colno
-
-    def preParse(self, instring, loc):
-        if col(loc, instring) != self.col:
-            instrlen = len(instring)
-            if self.ignoreExprs:
-                loc = self._skipIgnorables(instring, loc)
-            while loc < instrlen and instring[loc].isspace() and col(loc, instring) != self.col:
-                loc += 1
-        return loc
-
-    def parseImpl(self, instring, loc, doActions=True):
-        thiscol = col(loc, instring)
-        if thiscol > self.col:
-            raise ParseException(instring, loc, "Text not in expected column", self)
-        newloc = loc + self.col - thiscol
-        ret = instring[loc: newloc]
-        return newloc, ret
-
-
-class LineStart(_PositionToken):
-    r"""Matches if current position is at the beginning of a line within
-    the parse string
-
-    Example::
-
-        test = '''\
-        AAA this line
-        AAA and this line
-          AAA but not this one
-        B AAA and definitely not this one
-        '''
-
-        for t in (LineStart() + 'AAA' + restOfLine).searchString(test):
-            print(t)
-
-    prints::
-
-        ['AAA', ' this line']
-        ['AAA', ' and this line']
-
-    """
-    def __init__(self):
-        super(LineStart, self).__init__()
-        self.errmsg = "Expected start of line"
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if col(loc, instring) == 1:
-            return loc, []
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class LineEnd(_PositionToken):
-    """Matches if current position is at the end of a line within the
-    parse string
-    """
-    def __init__(self):
-        super(LineEnd, self).__init__()
-        self.setWhitespaceChars(ParserElement.DEFAULT_WHITE_CHARS.replace("\n", ""))
-        self.errmsg = "Expected end of line"
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if loc < len(instring):
-            if instring[loc] == "\n":
-                return loc + 1, "\n"
-            else:
-                raise ParseException(instring, loc, self.errmsg, self)
-        elif loc == len(instring):
-            return loc + 1, []
-        else:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-class StringStart(_PositionToken):
-    """Matches if current position is at the beginning of the parse
-    string
-    """
-    def __init__(self):
-        super(StringStart, self).__init__()
-        self.errmsg = "Expected start of text"
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if loc != 0:
-            # see if entire string up to here is just whitespace and ignoreables
-            if loc != self.preParse(instring, 0):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-class StringEnd(_PositionToken):
-    """Matches if current position is at the end of the parse string
-    """
-    def __init__(self):
-        super(StringEnd, self).__init__()
-        self.errmsg = "Expected end of text"
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if loc < len(instring):
-            raise ParseException(instring, loc, self.errmsg, self)
-        elif loc == len(instring):
-            return loc + 1, []
-        elif loc > len(instring):
-            return loc, []
-        else:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-class WordStart(_PositionToken):
-    """Matches if the current position is at the beginning of a Word,
-    and is not preceded by any character in a given set of
-    ``wordChars`` (default= ``printables``). To emulate the
-    ``\b`` behavior of regular expressions, use
-    ``WordStart(alphanums)``. ``WordStart`` will also match at
-    the beginning of the string being parsed, or at the beginning of
-    a line.
-    """
-    def __init__(self, wordChars=printables):
-        super(WordStart, self).__init__()
-        self.wordChars = set(wordChars)
-        self.errmsg = "Not at the start of a word"
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if loc != 0:
-            if (instring[loc - 1] in self.wordChars
-                    or instring[loc] not in self.wordChars):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-class WordEnd(_PositionToken):
-    """Matches if the current position is at the end of a Word, and is
-    not followed by any character in a given set of ``wordChars``
-    (default= ``printables``). To emulate the ``\b`` behavior of
-    regular expressions, use ``WordEnd(alphanums)``. ``WordEnd``
-    will also match at the end of the string being parsed, or at the end
-    of a line.
-    """
-    def __init__(self, wordChars=printables):
-        super(WordEnd, self).__init__()
-        self.wordChars = set(wordChars)
-        self.skipWhitespace = False
-        self.errmsg = "Not at the end of a word"
-
-    def parseImpl(self, instring, loc, doActions=True):
-        instrlen = len(instring)
-        if instrlen > 0 and loc < instrlen:
-            if (instring[loc] in self.wordChars or
-                    instring[loc - 1] not in self.wordChars):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-
-class ParseExpression(ParserElement):
-    """Abstract subclass of ParserElement, for combining and
-    post-processing parsed tokens.
-    """
-    def __init__(self, exprs, savelist=False):
-        super(ParseExpression, self).__init__(savelist)
-        if isinstance(exprs, _generatorType):
-            exprs = list(exprs)
-
-        if isinstance(exprs, basestring):
-            self.exprs = [self._literalStringClass(exprs)]
-        elif isinstance(exprs, ParserElement):
-            self.exprs = [exprs]
-        elif isinstance(exprs, Iterable):
-            exprs = list(exprs)
-            # if sequence of strings provided, wrap with Literal
-            if any(isinstance(expr, basestring) for expr in exprs):
-                exprs = (self._literalStringClass(e) if isinstance(e, basestring) else e for e in exprs)
-            self.exprs = list(exprs)
-        else:
-            try:
-                self.exprs = list(exprs)
-            except TypeError:
-                self.exprs = [exprs]
-        self.callPreparse = False
-
-    def append(self, other):
-        self.exprs.append(other)
-        self.strRepr = None
-        return self
-
-    def leaveWhitespace(self):
-        """Extends ``leaveWhitespace`` defined in base class, and also invokes ``leaveWhitespace`` on
-           all contained expressions."""
-        self.skipWhitespace = False
-        self.exprs = [e.copy() for e in self.exprs]
-        for e in self.exprs:
-            e.leaveWhitespace()
-        return self
-
-    def ignore(self, other):
-        if isinstance(other, Suppress):
-            if other not in self.ignoreExprs:
-                super(ParseExpression, self).ignore(other)
-                for e in self.exprs:
-                    e.ignore(self.ignoreExprs[-1])
-        else:
-            super(ParseExpression, self).ignore(other)
-            for e in self.exprs:
-                e.ignore(self.ignoreExprs[-1])
-        return self
-
-    def __str__(self):
-        try:
-            return super(ParseExpression, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "%s:(%s)" % (self.__class__.__name__, _ustr(self.exprs))
-        return self.strRepr
-
-    def streamline(self):
-        super(ParseExpression, self).streamline()
-
-        for e in self.exprs:
-            e.streamline()
-
-        # collapse nested And's of the form And(And(And(a, b), c), d) to And(a, b, c, d)
-        # but only if there are no parse actions or resultsNames on the nested And's
-        # (likewise for Or's and MatchFirst's)
-        if len(self.exprs) == 2:
-            other = self.exprs[0]
-            if (isinstance(other, self.__class__)
-                    and not other.parseAction
-                    and other.resultsName is None
-                    and not other.debug):
-                self.exprs = other.exprs[:] + [self.exprs[1]]
-                self.strRepr = None
-                self.mayReturnEmpty |= other.mayReturnEmpty
-                self.mayIndexError  |= other.mayIndexError
-
-            other = self.exprs[-1]
-            if (isinstance(other, self.__class__)
-                    and not other.parseAction
-                    and other.resultsName is None
-                    and not other.debug):
-                self.exprs = self.exprs[:-1] + other.exprs[:]
-                self.strRepr = None
-                self.mayReturnEmpty |= other.mayReturnEmpty
-                self.mayIndexError  |= other.mayIndexError
-
-        self.errmsg = "Expected " + _ustr(self)
-
-        return self
-
-    def validate(self, validateTrace=None):
-        tmp = (validateTrace if validateTrace is not None else [])[:] + [self]
-        for e in self.exprs:
-            e.validate(tmp)
-        self.checkRecursion([])
-
-    def copy(self):
-        ret = super(ParseExpression, self).copy()
-        ret.exprs = [e.copy() for e in self.exprs]
-        return ret
-
-    def _setResultsName(self, name, listAllMatches=False):
-        if __diag__.warn_ungrouped_named_tokens_in_collection:
-            for e in self.exprs:
-                if isinstance(e, ParserElement) and e.resultsName:
-                    warnings.warn("{0}: setting results name {1!r} on {2} expression "
-                                  "collides with {3!r} on contained expression".format("warn_ungrouped_named_tokens_in_collection",
-                                                                                       name,
-                                                                                       type(self).__name__,
-                                                                                       e.resultsName),
-                                  stacklevel=3)
-
-        return super(ParseExpression, self)._setResultsName(name, listAllMatches)
-
-
-class And(ParseExpression):
-    """
-    Requires all given :class:`ParseExpression` s to be found in the given order.
-    Expressions may be separated by whitespace.
-    May be constructed using the ``'+'`` operator.
-    May also be constructed using the ``'-'`` operator, which will
-    suppress backtracking.
-
-    Example::
-
-        integer = Word(nums)
-        name_expr = OneOrMore(Word(alphas))
-
-        expr = And([integer("id"), name_expr("name"), integer("age")])
-        # more easily written as:
-        expr = integer("id") + name_expr("name") + integer("age")
-    """
-
-    class _ErrorStop(Empty):
-        def __init__(self, *args, **kwargs):
-            super(And._ErrorStop, self).__init__(*args, **kwargs)
-            self.name = '-'
-            self.leaveWhitespace()
-
-    def __init__(self, exprs, savelist=True):
-        exprs = list(exprs)
-        if exprs and Ellipsis in exprs:
-            tmp = []
-            for i, expr in enumerate(exprs):
-                if expr is Ellipsis:
-                    if i < len(exprs) - 1:
-                        skipto_arg = (Empty() + exprs[i + 1]).exprs[-1]
-                        tmp.append(SkipTo(skipto_arg)("_skipped*"))
-                    else:
-                        raise Exception("cannot construct And with sequence ending in ...")
-                else:
-                    tmp.append(expr)
-            exprs[:] = tmp
-        super(And, self).__init__(exprs, savelist)
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        self.setWhitespaceChars(self.exprs[0].whiteChars)
-        self.skipWhitespace = self.exprs[0].skipWhitespace
-        self.callPreparse = True
-
-    def streamline(self):
-        # collapse any _PendingSkip's
-        if self.exprs:
-            if any(isinstance(e, ParseExpression) and e.exprs and isinstance(e.exprs[-1], _PendingSkip)
-                   for e in self.exprs[:-1]):
-                for i, e in enumerate(self.exprs[:-1]):
-                    if e is None:
-                        continue
-                    if (isinstance(e, ParseExpression)
-                            and e.exprs and isinstance(e.exprs[-1], _PendingSkip)):
-                        e.exprs[-1] = e.exprs[-1] + self.exprs[i + 1]
-                        self.exprs[i + 1] = None
-                self.exprs = [e for e in self.exprs if e is not None]
-
-        super(And, self).streamline()
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        return self
-
-    def parseImpl(self, instring, loc, doActions=True):
-        # pass False as last arg to _parse for first element, since we already
-        # pre-parsed the string as part of our And pre-parsing
-        loc, resultlist = self.exprs[0]._parse(instring, loc, doActions, callPreParse=False)
-        errorStop = False
-        for e in self.exprs[1:]:
-            if isinstance(e, And._ErrorStop):
-                errorStop = True
-                continue
-            if errorStop:
-                try:
-                    loc, exprtokens = e._parse(instring, loc, doActions)
-                except ParseSyntaxException:
-                    raise
-                except ParseBaseException as pe:
-                    pe.__traceback__ = None
-                    raise ParseSyntaxException._from_exception(pe)
-                except IndexError:
-                    raise ParseSyntaxException(instring, len(instring), self.errmsg, self)
-            else:
-                loc, exprtokens = e._parse(instring, loc, doActions)
-            if exprtokens or exprtokens.haskeys():
-                resultlist += exprtokens
-        return loc, resultlist
-
-    def __iadd__(self, other):
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        return self.append(other)  # And([self, other])
-
-    def checkRecursion(self, parseElementList):
-        subRecCheckList = parseElementList[:] + [self]
-        for e in self.exprs:
-            e.checkRecursion(subRecCheckList)
-            if not e.mayReturnEmpty:
-                break
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-
-class Or(ParseExpression):
-    """Requires that at least one :class:`ParseExpression` is found. If
-    two expressions match, the expression that matches the longest
-    string will be used. May be constructed using the ``'^'``
-    operator.
-
-    Example::
-
-        # construct Or using '^' operator
-
-        number = Word(nums) ^ Combine(Word(nums) + '.' + Word(nums))
-        print(number.searchString("123 3.1416 789"))
-
-    prints::
-
-        [['123'], ['3.1416'], ['789']]
-    """
-    def __init__(self, exprs, savelist=False):
-        super(Or, self).__init__(exprs, savelist)
-        if self.exprs:
-            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
-        else:
-            self.mayReturnEmpty = True
-
-    def streamline(self):
-        super(Or, self).streamline()
-        if __compat__.collect_all_And_tokens:
-            self.saveAsList = any(e.saveAsList for e in self.exprs)
-        return self
-
-    def parseImpl(self, instring, loc, doActions=True):
-        maxExcLoc = -1
-        maxException = None
-        matches = []
-        for e in self.exprs:
-            try:
-                loc2 = e.tryParse(instring, loc)
-            except ParseException as err:
-                err.__traceback__ = None
-                if err.loc > maxExcLoc:
-                    maxException = err
-                    maxExcLoc = err.loc
-            except IndexError:
-                if len(instring) > maxExcLoc:
-                    maxException = ParseException(instring, len(instring), e.errmsg, self)
-                    maxExcLoc = len(instring)
-            else:
-                # save match among all matches, to retry longest to shortest
-                matches.append((loc2, e))
-
-        if matches:
-            # re-evaluate all matches in descending order of length of match, in case attached actions
-            # might change whether or how much they match of the input.
-            matches.sort(key=itemgetter(0), reverse=True)
-
-            if not doActions:
-                # no further conditions or parse actions to change the selection of
-                # alternative, so the first match will be the best match
-                best_expr = matches[0][1]
-                return best_expr._parse(instring, loc, doActions)
-
-            longest = -1, None
-            for loc1, expr1 in matches:
-                if loc1 <= longest[0]:
-                    # already have a longer match than this one will deliver, we are done
-                    return longest
-
-                try:
-                    loc2, toks = expr1._parse(instring, loc, doActions)
-                except ParseException as err:
-                    err.__traceback__ = None
-                    if err.loc > maxExcLoc:
-                        maxException = err
-                        maxExcLoc = err.loc
-                else:
-                    if loc2 >= loc1:
-                        return loc2, toks
-                    # didn't match as much as before
-                    elif loc2 > longest[0]:
-                        longest = loc2, toks
-
-            if longest != (-1, None):
-                return longest
-
-        if maxException is not None:
-            maxException.msg = self.errmsg
-            raise maxException
-        else:
-            raise ParseException(instring, loc, "no defined alternatives to match", self)
-
-
-    def __ixor__(self, other):
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        return self.append(other)  # Or([self, other])
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " ^ ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion(self, parseElementList):
-        subRecCheckList = parseElementList[:] + [self]
-        for e in self.exprs:
-            e.checkRecursion(subRecCheckList)
-
-    def _setResultsName(self, name, listAllMatches=False):
-        if (not __compat__.collect_all_And_tokens
-                and __diag__.warn_multiple_tokens_in_named_alternation):
-            if any(isinstance(e, And) for e in self.exprs):
-                warnings.warn("{0}: setting results name {1!r} on {2} expression "
-                              "may only return a single token for an And alternative, "
-                              "in future will return the full list of tokens".format(
-                    "warn_multiple_tokens_in_named_alternation", name, type(self).__name__),
-                    stacklevel=3)
-
-        return super(Or, self)._setResultsName(name, listAllMatches)
-
-
-class MatchFirst(ParseExpression):
-    """Requires that at least one :class:`ParseExpression` is found. If
-    two expressions match, the first one listed is the one that will
-    match. May be constructed using the ``'|'`` operator.
-
-    Example::
-
-        # construct MatchFirst using '|' operator
-
-        # watch the order of expressions to match
-        number = Word(nums) | Combine(Word(nums) + '.' + Word(nums))
-        print(number.searchString("123 3.1416 789")) #  Fail! -> [['123'], ['3'], ['1416'], ['789']]
-
-        # put more selective expression first
-        number = Combine(Word(nums) + '.' + Word(nums)) | Word(nums)
-        print(number.searchString("123 3.1416 789")) #  Better -> [['123'], ['3.1416'], ['789']]
-    """
-    def __init__(self, exprs, savelist=False):
-        super(MatchFirst, self).__init__(exprs, savelist)
-        if self.exprs:
-            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
-        else:
-            self.mayReturnEmpty = True
-
-    def streamline(self):
-        super(MatchFirst, self).streamline()
-        if __compat__.collect_all_And_tokens:
-            self.saveAsList = any(e.saveAsList for e in self.exprs)
-        return self
-
-    def parseImpl(self, instring, loc, doActions=True):
-        maxExcLoc = -1
-        maxException = None
-        for e in self.exprs:
-            try:
-                ret = e._parse(instring, loc, doActions)
-                return ret
-            except ParseException as err:
-                if err.loc > maxExcLoc:
-                    maxException = err
-                    maxExcLoc = err.loc
-            except IndexError:
-                if len(instring) > maxExcLoc:
-                    maxException = ParseException(instring, len(instring), e.errmsg, self)
-                    maxExcLoc = len(instring)
-
-        # only got here if no expression matched, raise exception for match that made it the furthest
-        else:
-            if maxException is not None:
-                maxException.msg = self.errmsg
-                raise maxException
-            else:
-                raise ParseException(instring, loc, "no defined alternatives to match", self)
-
-    def __ior__(self, other):
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        return self.append(other)  # MatchFirst([self, other])
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " | ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion(self, parseElementList):
-        subRecCheckList = parseElementList[:] + [self]
-        for e in self.exprs:
-            e.checkRecursion(subRecCheckList)
-
-    def _setResultsName(self, name, listAllMatches=False):
-        if (not __compat__.collect_all_And_tokens
-                and __diag__.warn_multiple_tokens_in_named_alternation):
-            if any(isinstance(e, And) for e in self.exprs):
-                warnings.warn("{0}: setting results name {1!r} on {2} expression "
-                              "may only return a single token for an And alternative, "
-                              "in future will return the full list of tokens".format(
-                    "warn_multiple_tokens_in_named_alternation", name, type(self).__name__),
-                    stacklevel=3)
-
-        return super(MatchFirst, self)._setResultsName(name, listAllMatches)
-
-
-class Each(ParseExpression):
-    """Requires all given :class:`ParseExpression` s to be found, but in
-    any order. Expressions may be separated by whitespace.
-
-    May be constructed using the ``'&'`` operator.
-
-    Example::
-
-        color = oneOf("RED ORANGE YELLOW GREEN BLUE PURPLE BLACK WHITE BROWN")
-        shape_type = oneOf("SQUARE CIRCLE TRIANGLE STAR HEXAGON OCTAGON")
-        integer = Word(nums)
-        shape_attr = "shape:" + shape_type("shape")
-        posn_attr = "posn:" + Group(integer("x") + ',' + integer("y"))("posn")
-        color_attr = "color:" + color("color")
-        size_attr = "size:" + integer("size")
-
-        # use Each (using operator '&') to accept attributes in any order
-        # (shape and posn are required, color and size are optional)
-        shape_spec = shape_attr & posn_attr & Optional(color_attr) & Optional(size_attr)
-
-        shape_spec.runTests('''
-            shape: SQUARE color: BLACK posn: 100, 120
-            shape: CIRCLE size: 50 color: BLUE posn: 50,80
-            color:GREEN size:20 shape:TRIANGLE posn:20,40
-            '''
-            )
-
-    prints::
-
-        shape: SQUARE color: BLACK posn: 100, 120
-        ['shape:', 'SQUARE', 'color:', 'BLACK', 'posn:', ['100', ',', '120']]
-        - color: BLACK
-        - posn: ['100', ',', '120']
-          - x: 100
-          - y: 120
-        - shape: SQUARE
-
-
-        shape: CIRCLE size: 50 color: BLUE posn: 50,80
-        ['shape:', 'CIRCLE', 'size:', '50', 'color:', 'BLUE', 'posn:', ['50', ',', '80']]
-        - color: BLUE
-        - posn: ['50', ',', '80']
-          - x: 50
-          - y: 80
-        - shape: CIRCLE
-        - size: 50
-
-
-        color: GREEN size: 20 shape: TRIANGLE posn: 20,40
-        ['color:', 'GREEN', 'size:', '20', 'shape:', 'TRIANGLE', 'posn:', ['20', ',', '40']]
-        - color: GREEN
-        - posn: ['20', ',', '40']
-          - x: 20
-          - y: 40
-        - shape: TRIANGLE
-        - size: 20
-    """
-    def __init__(self, exprs, savelist=True):
-        super(Each, self).__init__(exprs, savelist)
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        self.skipWhitespace = True
-        self.initExprGroups = True
-        self.saveAsList = True
-
-    def streamline(self):
-        super(Each, self).streamline()
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        return self
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if self.initExprGroups:
-            self.opt1map = dict((id(e.expr), e) for e in self.exprs if isinstance(e, Optional))
-            opt1 = [e.expr for e in self.exprs if isinstance(e, Optional)]
-            opt2 = [e for e in self.exprs if e.mayReturnEmpty and not isinstance(e, (Optional, Regex))]
-            self.optionals = opt1 + opt2
-            self.multioptionals = [e.expr for e in self.exprs if isinstance(e, ZeroOrMore)]
-            self.multirequired = [e.expr for e in self.exprs if isinstance(e, OneOrMore)]
-            self.required = [e for e in self.exprs if not isinstance(e, (Optional, ZeroOrMore, OneOrMore))]
-            self.required += self.multirequired
-            self.initExprGroups = False
-        tmpLoc = loc
-        tmpReqd = self.required[:]
-        tmpOpt  = self.optionals[:]
-        matchOrder = []
-
-        keepMatching = True
-        while keepMatching:
-            tmpExprs = tmpReqd + tmpOpt + self.multioptionals + self.multirequired
-            failed = []
-            for e in tmpExprs:
-                try:
-                    tmpLoc = e.tryParse(instring, tmpLoc)
-                except ParseException:
-                    failed.append(e)
-                else:
-                    matchOrder.append(self.opt1map.get(id(e), e))
-                    if e in tmpReqd:
-                        tmpReqd.remove(e)
-                    elif e in tmpOpt:
-                        tmpOpt.remove(e)
-            if len(failed) == len(tmpExprs):
-                keepMatching = False
-
-        if tmpReqd:
-            missing = ", ".join(_ustr(e) for e in tmpReqd)
-            raise ParseException(instring, loc, "Missing one or more required elements (%s)" % missing)
-
-        # add any unmatched Optionals, in case they have default values defined
-        matchOrder += [e for e in self.exprs if isinstance(e, Optional) and e.expr in tmpOpt]
-
-        resultlist = []
-        for e in matchOrder:
-            loc, results = e._parse(instring, loc, doActions)
-            resultlist.append(results)
-
-        finalResults = sum(resultlist, ParseResults([]))
-        return loc, finalResults
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " & ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion(self, parseElementList):
-        subRecCheckList = parseElementList[:] + [self]
-        for e in self.exprs:
-            e.checkRecursion(subRecCheckList)
-
-
-class ParseElementEnhance(ParserElement):
-    """Abstract subclass of :class:`ParserElement`, for combining and
-    post-processing parsed tokens.
-    """
-    def __init__(self, expr, savelist=False):
-        super(ParseElementEnhance, self).__init__(savelist)
-        if isinstance(expr, basestring):
-            if issubclass(self._literalStringClass, Token):
-                expr = self._literalStringClass(expr)
-            else:
-                expr = self._literalStringClass(Literal(expr))
-        self.expr = expr
-        self.strRepr = None
-        if expr is not None:
-            self.mayIndexError = expr.mayIndexError
-            self.mayReturnEmpty = expr.mayReturnEmpty
-            self.setWhitespaceChars(expr.whiteChars)
-            self.skipWhitespace = expr.skipWhitespace
-            self.saveAsList = expr.saveAsList
-            self.callPreparse = expr.callPreparse
-            self.ignoreExprs.extend(expr.ignoreExprs)
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if self.expr is not None:
-            return self.expr._parse(instring, loc, doActions, callPreParse=False)
-        else:
-            raise ParseException("", loc, self.errmsg, self)
-
-    def leaveWhitespace(self):
-        self.skipWhitespace = False
-        self.expr = self.expr.copy()
-        if self.expr is not None:
-            self.expr.leaveWhitespace()
-        return self
-
-    def ignore(self, other):
-        if isinstance(other, Suppress):
-            if other not in self.ignoreExprs:
-                super(ParseElementEnhance, self).ignore(other)
-                if self.expr is not None:
-                    self.expr.ignore(self.ignoreExprs[-1])
-        else:
-            super(ParseElementEnhance, self).ignore(other)
-            if self.expr is not None:
-                self.expr.ignore(self.ignoreExprs[-1])
-        return self
-
-    def streamline(self):
-        super(ParseElementEnhance, self).streamline()
-        if self.expr is not None:
-            self.expr.streamline()
-        return self
-
-    def checkRecursion(self, parseElementList):
-        if self in parseElementList:
-            raise RecursiveGrammarException(parseElementList + [self])
-        subRecCheckList = parseElementList[:] + [self]
-        if self.expr is not None:
-            self.expr.checkRecursion(subRecCheckList)
-
-    def validate(self, validateTrace=None):
-        if validateTrace is None:
-            validateTrace = []
-        tmp = validateTrace[:] + [self]
-        if self.expr is not None:
-            self.expr.validate(tmp)
-        self.checkRecursion([])
-
-    def __str__(self):
-        try:
-            return super(ParseElementEnhance, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None and self.expr is not None:
-            self.strRepr = "%s:(%s)" % (self.__class__.__name__, _ustr(self.expr))
-        return self.strRepr
-
-
-class FollowedBy(ParseElementEnhance):
-    """Lookahead matching of the given parse expression.
-    ``FollowedBy`` does *not* advance the parsing position within
-    the input string, it only verifies that the specified parse
-    expression matches at the current position.  ``FollowedBy``
-    always returns a null token list. If any results names are defined
-    in the lookahead expression, those *will* be returned for access by
-    name.
-
-    Example::
-
-        # use FollowedBy to match a label only if it is followed by a ':'
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-
-        OneOrMore(attr_expr).parseString("shape: SQUARE color: BLACK posn: upper left").pprint()
-
-    prints::
-
-        [['shape', 'SQUARE'], ['color', 'BLACK'], ['posn', 'upper left']]
-    """
-    def __init__(self, expr):
-        super(FollowedBy, self).__init__(expr)
-        self.mayReturnEmpty = True
-
-    def parseImpl(self, instring, loc, doActions=True):
-        # by using self._expr.parse and deleting the contents of the returned ParseResults list
-        # we keep any named results that were defined in the FollowedBy expression
-        _, ret = self.expr._parse(instring, loc, doActions=doActions)
-        del ret[:]
-
-        return loc, ret
-
-
-class PrecededBy(ParseElementEnhance):
-    """Lookbehind matching of the given parse expression.
-    ``PrecededBy`` does not advance the parsing position within the
-    input string, it only verifies that the specified parse expression
-    matches prior to the current position.  ``PrecededBy`` always
-    returns a null token list, but if a results name is defined on the
-    given expression, it is returned.
-
-    Parameters:
-
-     - expr - expression that must match prior to the current parse
-       location
-     - retreat - (default= ``None``) - (int) maximum number of characters
-       to lookbehind prior to the current parse location
-
-    If the lookbehind expression is a string, Literal, Keyword, or
-    a Word or CharsNotIn with a specified exact or maximum length, then
-    the retreat parameter is not required. Otherwise, retreat must be
-    specified to give a maximum number of characters to look back from
-    the current parse position for a lookbehind match.
-
-    Example::
-
-        # VB-style variable names with type prefixes
-        int_var = PrecededBy("#") + pyparsing_common.identifier
-        str_var = PrecededBy("$") + pyparsing_common.identifier
-
-    """
-    def __init__(self, expr, retreat=None):
-        super(PrecededBy, self).__init__(expr)
-        self.expr = self.expr().leaveWhitespace()
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-        self.exact = False
-        if isinstance(expr, str):
-            retreat = len(expr)
-            self.exact = True
-        elif isinstance(expr, (Literal, Keyword)):
-            retreat = expr.matchLen
-            self.exact = True
-        elif isinstance(expr, (Word, CharsNotIn)) and expr.maxLen != _MAX_INT:
-            retreat = expr.maxLen
-            self.exact = True
-        elif isinstance(expr, _PositionToken):
-            retreat = 0
-            self.exact = True
-        self.retreat = retreat
-        self.errmsg = "not preceded by " + str(expr)
-        self.skipWhitespace = False
-        self.parseAction.append(lambda s, l, t: t.__delitem__(slice(None, None)))
-
-    def parseImpl(self, instring, loc=0, doActions=True):
-        if self.exact:
-            if loc < self.retreat:
-                raise ParseException(instring, loc, self.errmsg)
-            start = loc - self.retreat
-            _, ret = self.expr._parse(instring, start)
-        else:
-            # retreat specified a maximum lookbehind window, iterate
-            test_expr = self.expr + StringEnd()
-            instring_slice = instring[max(0, loc - self.retreat):loc]
-            last_expr = ParseException(instring, loc, self.errmsg)
-            for offset in range(1, min(loc, self.retreat + 1)+1):
-                try:
-                    # print('trying', offset, instring_slice, repr(instring_slice[loc - offset:]))
-                    _, ret = test_expr._parse(instring_slice, len(instring_slice) - offset)
-                except ParseBaseException as pbe:
-                    last_expr = pbe
-                else:
-                    break
-            else:
-                raise last_expr
-        return loc, ret
-
-
-class NotAny(ParseElementEnhance):
-    """Lookahead to disallow matching with the given parse expression.
-    ``NotAny`` does *not* advance the parsing position within the
-    input string, it only verifies that the specified parse expression
-    does *not* match at the current position.  Also, ``NotAny`` does
-    *not* skip over leading whitespace. ``NotAny`` always returns
-    a null token list.  May be constructed using the '~' operator.
-
-    Example::
-
-        AND, OR, NOT = map(CaselessKeyword, "AND OR NOT".split())
-
-        # take care not to mistake keywords for identifiers
-        ident = ~(AND | OR | NOT) + Word(alphas)
-        boolean_term = Optional(NOT) + ident
-
-        # very crude boolean expression - to support parenthesis groups and
-        # operation hierarchy, use infixNotation
-        boolean_expr = boolean_term + ZeroOrMore((AND | OR) + boolean_term)
-
-        # integers that are followed by "." are actually floats
-        integer = Word(nums) + ~Char(".")
-    """
-    def __init__(self, expr):
-        super(NotAny, self).__init__(expr)
-        # ~ self.leaveWhitespace()
-        self.skipWhitespace = False  # do NOT use self.leaveWhitespace(), don't want to propagate to exprs
-        self.mayReturnEmpty = True
-        self.errmsg = "Found unwanted token, " + _ustr(self.expr)
-
-    def parseImpl(self, instring, loc, doActions=True):
-        if self.expr.canParseNext(instring, loc):
-            raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "~{" + _ustr(self.expr) + "}"
-
-        return self.strRepr
-
-class _MultipleMatch(ParseElementEnhance):
-    def __init__(self, expr, stopOn=None):
-        super(_MultipleMatch, self).__init__(expr)
-        self.saveAsList = True
-        ender = stopOn
-        if isinstance(ender, basestring):
-            ender = self._literalStringClass(ender)
-        self.stopOn(ender)
-
-    def stopOn(self, ender):
-        if isinstance(ender, basestring):
-            ender = self._literalStringClass(ender)
-        self.not_ender = ~ender if ender is not None else None
-        return self
-
-    def parseImpl(self, instring, loc, doActions=True):
-        self_expr_parse = self.expr._parse
-        self_skip_ignorables = self._skipIgnorables
-        check_ender = self.not_ender is not None
-        if check_ender:
-            try_not_ender = self.not_ender.tryParse
-
-        # must be at least one (but first see if we are the stopOn sentinel;
-        # if so, fail)
-        if check_ender:
-            try_not_ender(instring, loc)
-        loc, tokens = self_expr_parse(instring, loc, doActions, callPreParse=False)
-        try:
-            hasIgnoreExprs = (not not self.ignoreExprs)
-            while 1:
-                if check_ender:
-                    try_not_ender(instring, loc)
-                if hasIgnoreExprs:
-                    preloc = self_skip_ignorables(instring, loc)
-                else:
-                    preloc = loc
-                loc, tmptokens = self_expr_parse(instring, preloc, doActions)
-                if tmptokens or tmptokens.haskeys():
-                    tokens += tmptokens
-        except (ParseException, IndexError):
-            pass
-
-        return loc, tokens
-
-    def _setResultsName(self, name, listAllMatches=False):
-        if __diag__.warn_ungrouped_named_tokens_in_collection:
-            for e in [self.expr] + getattr(self.expr, 'exprs', []):
-                if isinstance(e, ParserElement) and e.resultsName:
-                    warnings.warn("{0}: setting results name {1!r} on {2} expression "
-                                  "collides with {3!r} on contained expression".format("warn_ungrouped_named_tokens_in_collection",
-                                                                                       name,
-                                                                                       type(self).__name__,
-                                                                                       e.resultsName),
-                                  stacklevel=3)
-
-        return super(_MultipleMatch, self)._setResultsName(name, listAllMatches)
-
-
-class OneOrMore(_MultipleMatch):
-    """Repetition of one or more of the given expression.
-
-    Parameters:
-     - expr - expression that must match one or more times
-     - stopOn - (default= ``None``) - expression for a terminating sentinel
-          (only required if the sentinel would ordinarily match the repetition
-          expression)
-
-    Example::
-
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
-
-        text = "shape: SQUARE posn: upper left color: BLACK"
-        OneOrMore(attr_expr).parseString(text).pprint()  # Fail! read 'color' as data instead of next label -> [['shape', 'SQUARE color']]
-
-        # use stopOn attribute for OneOrMore to avoid reading label string as part of the data
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        OneOrMore(attr_expr).parseString(text).pprint() # Better -> [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'BLACK']]
-
-        # could also be written as
-        (attr_expr * (1,)).parseString(text).pprint()
-    """
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + _ustr(self.expr) + "}..."
-
-        return self.strRepr
-
-class ZeroOrMore(_MultipleMatch):
-    """Optional repetition of zero or more of the given expression.
-
-    Parameters:
-     - expr - expression that must match zero or more times
-     - stopOn - (default= ``None``) - expression for a terminating sentinel
-          (only required if the sentinel would ordinarily match the repetition
-          expression)
-
-    Example: similar to :class:`OneOrMore`
-    """
-    def __init__(self, expr, stopOn=None):
-        super(ZeroOrMore, self).__init__(expr, stopOn=stopOn)
-        self.mayReturnEmpty = True
-
-    def parseImpl(self, instring, loc, doActions=True):
-        try:
-            return super(ZeroOrMore, self).parseImpl(instring, loc, doActions)
-        except (ParseException, IndexError):
-            return loc, []
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "[" + _ustr(self.expr) + "]..."
-
-        return self.strRepr
-
-
-class _NullToken(object):
-    def __bool__(self):
-        return False
-    __nonzero__ = __bool__
-    def __str__(self):
-        return ""
-
-class Optional(ParseElementEnhance):
-    """Optional matching of the given expression.
-
-    Parameters:
-     - expr - expression that must match zero or more times
-     - default (optional) - value to be returned if the optional expression is not found.
-
-    Example::
-
-        # US postal code can be a 5-digit zip, plus optional 4-digit qualifier
-        zip = Combine(Word(nums, exact=5) + Optional('-' + Word(nums, exact=4)))
-        zip.runTests('''
-            # traditional ZIP code
-            12345
-
-            # ZIP+4 form
-            12101-0001
-
-            # invalid ZIP
-            98765-
-            ''')
-
-    prints::
-
-        # traditional ZIP code
-        12345
-        ['12345']
-
-        # ZIP+4 form
-        12101-0001
-        ['12101-0001']
-
-        # invalid ZIP
-        98765-
-             ^
-        FAIL: Expected end of text (at char 5), (line:1, col:6)
-    """
-    __optionalNotMatched = _NullToken()
-
-    def __init__(self, expr, default=__optionalNotMatched):
-        super(Optional, self).__init__(expr, savelist=False)
-        self.saveAsList = self.expr.saveAsList
-        self.defaultValue = default
-        self.mayReturnEmpty = True
-
-    def parseImpl(self, instring, loc, doActions=True):
-        try:
-            loc, tokens = self.expr._parse(instring, loc, doActions, callPreParse=False)
-        except (ParseException, IndexError):
-            if self.defaultValue is not self.__optionalNotMatched:
-                if self.expr.resultsName:
-                    tokens = ParseResults([self.defaultValue])
-                    tokens[self.expr.resultsName] = self.defaultValue
-                else:
-                    tokens = [self.defaultValue]
-            else:
-                tokens = []
-        return loc, tokens
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "[" + _ustr(self.expr) + "]"
-
-        return self.strRepr
-
-class SkipTo(ParseElementEnhance):
-    """Token for skipping over all undefined text until the matched
-    expression is found.
-
-    Parameters:
-     - expr - target expression marking the end of the data to be skipped
-     - include - (default= ``False``) if True, the target expression is also parsed
-          (the skipped text and target expression are returned as a 2-element list).
-     - ignore - (default= ``None``) used to define grammars (typically quoted strings and
-          comments) that might contain false matches to the target expression
-     - failOn - (default= ``None``) define expressions that are not allowed to be
-          included in the skipped test; if found before the target expression is found,
-          the SkipTo is not a match
-
-    Example::
-
-        report = '''
-            Outstanding Issues Report - 1 Jan 2000
-
-               # | Severity | Description                               |  Days Open
-            -----+----------+-------------------------------------------+-----------
-             101 | Critical | Intermittent system crash                 |          6
-              94 | Cosmetic | Spelling error on Login ('log|n')         |         14
-              79 | Minor    | System slow when running too many reports |         47
-            '''
-        integer = Word(nums)
-        SEP = Suppress('|')
-        # use SkipTo to simply match everything up until the next SEP
-        # - ignore quoted strings, so that a '|' character inside a quoted string does not match
-        # - parse action will call token.strip() for each matched token, i.e., the description body
-        string_data = SkipTo(SEP, ignore=quotedString)
-        string_data.setParseAction(tokenMap(str.strip))
-        ticket_expr = (integer("issue_num") + SEP
-                      + string_data("sev") + SEP
-                      + string_data("desc") + SEP
-                      + integer("days_open"))
-
-        for tkt in ticket_expr.searchString(report):
-            print tkt.dump()
-
-    prints::
-
-        ['101', 'Critical', 'Intermittent system crash', '6']
-        - days_open: 6
-        - desc: Intermittent system crash
-        - issue_num: 101
-        - sev: Critical
-        ['94', 'Cosmetic', "Spelling error on Login ('log|n')", '14']
-        - days_open: 14
-        - desc: Spelling error on Login ('log|n')
-        - issue_num: 94
-        - sev: Cosmetic
-        ['79', 'Minor', 'System slow when running too many reports', '47']
-        - days_open: 47
-        - desc: System slow when running too many reports
-        - issue_num: 79
-        - sev: Minor
-    """
-    def __init__(self, other, include=False, ignore=None, failOn=None):
-        super(SkipTo, self).__init__(other)
-        self.ignoreExpr = ignore
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-        self.includeMatch = include
-        self.saveAsList = False
-        if isinstance(failOn, basestring):
-            self.failOn = self._literalStringClass(failOn)
-        else:
-            self.failOn = failOn
-        self.errmsg = "No match found for " + _ustr(self.expr)
-
-    def parseImpl(self, instring, loc, doActions=True):
-        startloc = loc
-        instrlen = len(instring)
-        expr = self.expr
-        expr_parse = self.expr._parse
-        self_failOn_canParseNext = self.failOn.canParseNext if self.failOn is not None else None
-        self_ignoreExpr_tryParse = self.ignoreExpr.tryParse if self.ignoreExpr is not None else None
-
-        tmploc = loc
-        while tmploc <= instrlen:
-            if self_failOn_canParseNext is not None:
-                # break if failOn expression matches
-                if self_failOn_canParseNext(instring, tmploc):
-                    break
-
-            if self_ignoreExpr_tryParse is not None:
-                # advance past ignore expressions
-                while 1:
-                    try:
-                        tmploc = self_ignoreExpr_tryParse(instring, tmploc)
-                    except ParseBaseException:
-                        break
-
-            try:
-                expr_parse(instring, tmploc, doActions=False, callPreParse=False)
-            except (ParseException, IndexError):
-                # no match, advance loc in string
-                tmploc += 1
-            else:
-                # matched skipto expr, done
-                break
-
-        else:
-            # ran off the end of the input string without matching skipto expr, fail
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        # build up return values
-        loc = tmploc
-        skiptext = instring[startloc:loc]
-        skipresult = ParseResults(skiptext)
-
-        if self.includeMatch:
-            loc, mat = expr_parse(instring, loc, doActions, callPreParse=False)
-            skipresult += mat
-
-        return loc, skipresult
-
-class Forward(ParseElementEnhance):
-    """Forward declaration of an expression to be defined later -
-    used for recursive grammars, such as algebraic infix notation.
-    When the expression is known, it is assigned to the ``Forward``
-    variable using the '<<' operator.
-
-    Note: take care when assigning to ``Forward`` not to overlook
-    precedence of operators.
-
-    Specifically, '|' has a lower precedence than '<<', so that::
-
-        fwdExpr << a | b | c
-
-    will actually be evaluated as::
-
-        (fwdExpr << a) | b | c
-
-    thereby leaving b and c out as parseable alternatives.  It is recommended that you
-    explicitly group the values inserted into the ``Forward``::
-
-        fwdExpr << (a | b | c)
-
-    Converting to use the '<<=' operator instead will avoid this problem.
-
-    See :class:`ParseResults.pprint` for an example of a recursive
-    parser created using ``Forward``.
-    """
-    def __init__(self, other=None):
-        super(Forward, self).__init__(other, savelist=False)
-
-    def __lshift__(self, other):
-        if isinstance(other, basestring):
-            other = self._literalStringClass(other)
-        self.expr = other
-        self.strRepr = None
-        self.mayIndexError = self.expr.mayIndexError
-        self.mayReturnEmpty = self.expr.mayReturnEmpty
-        self.setWhitespaceChars(self.expr.whiteChars)
-        self.skipWhitespace = self.expr.skipWhitespace
-        self.saveAsList = self.expr.saveAsList
-        self.ignoreExprs.extend(self.expr.ignoreExprs)
-        return self
-
-    def __ilshift__(self, other):
-        return self << other
-
-    def leaveWhitespace(self):
-        self.skipWhitespace = False
-        return self
-
-    def streamline(self):
-        if not self.streamlined:
-            self.streamlined = True
-            if self.expr is not None:
-                self.expr.streamline()
-        return self
-
-    def validate(self, validateTrace=None):
-        if validateTrace is None:
-            validateTrace = []
-
-        if self not in validateTrace:
-            tmp = validateTrace[:] + [self]
-            if self.expr is not None:
-                self.expr.validate(tmp)
-        self.checkRecursion([])
-
-    def __str__(self):
-        if hasattr(self, "name"):
-            return self.name
-        if self.strRepr is not None:
-            return self.strRepr
-
-        # Avoid infinite recursion by setting a temporary strRepr
-        self.strRepr = ": ..."
-
-        # Use the string representation of main expression.
-        retString = '...'
-        try:
-            if self.expr is not None:
-                retString = _ustr(self.expr)[:1000]
-            else:
-                retString = "None"
-        finally:
-            self.strRepr = self.__class__.__name__ + ": " + retString
-        return self.strRepr
-
-    def copy(self):
-        if self.expr is not None:
-            return super(Forward, self).copy()
-        else:
-            ret = Forward()
-            ret <<= self
-            return ret
-
-    def _setResultsName(self, name, listAllMatches=False):
-        if __diag__.warn_name_set_on_empty_Forward:
-            if self.expr is None:
-                warnings.warn("{0}: setting results name {0!r} on {1} expression "
-                              "that has no contained expression".format("warn_name_set_on_empty_Forward",
-                                                                        name,
-                                                                        type(self).__name__),
-                              stacklevel=3)
-
-        return super(Forward, self)._setResultsName(name, listAllMatches)
-
-class TokenConverter(ParseElementEnhance):
-    """
-    Abstract subclass of :class:`ParseExpression`, for converting parsed results.
-    """
-    def __init__(self, expr, savelist=False):
-        super(TokenConverter, self).__init__(expr)  # , savelist)
-        self.saveAsList = False
-
-class Combine(TokenConverter):
-    """Converter to concatenate all matching tokens to a single string.
-    By default, the matching patterns must also be contiguous in the
-    input string; this can be disabled by specifying
-    ``'adjacent=False'`` in the constructor.
-
-    Example::
-
-        real = Word(nums) + '.' + Word(nums)
-        print(real.parseString('3.1416')) # -> ['3', '.', '1416']
-        # will also erroneously match the following
-        print(real.parseString('3. 1416')) # -> ['3', '.', '1416']
-
-        real = Combine(Word(nums) + '.' + Word(nums))
-        print(real.parseString('3.1416')) # -> ['3.1416']
-        # no match when there are internal spaces
-        print(real.parseString('3. 1416')) # -> Exception: Expected W:(0123...)
-    """
-    def __init__(self, expr, joinString="", adjacent=True):
-        super(Combine, self).__init__(expr)
-        # suppress whitespace-stripping in contained parse expressions, but re-enable it on the Combine itself
-        if adjacent:
-            self.leaveWhitespace()
-        self.adjacent = adjacent
-        self.skipWhitespace = True
-        self.joinString = joinString
-        self.callPreparse = True
-
-    def ignore(self, other):
-        if self.adjacent:
-            ParserElement.ignore(self, other)
-        else:
-            super(Combine, self).ignore(other)
-        return self
-
-    def postParse(self, instring, loc, tokenlist):
-        retToks = tokenlist.copy()
-        del retToks[:]
-        retToks += ParseResults(["".join(tokenlist._asStringList(self.joinString))], modal=self.modalResults)
-
-        if self.resultsName and retToks.haskeys():
-            return [retToks]
-        else:
-            return retToks
-
-class Group(TokenConverter):
-    """Converter to return the matched tokens as a list - useful for
-    returning tokens of :class:`ZeroOrMore` and :class:`OneOrMore` expressions.
-
-    Example::
-
-        ident = Word(alphas)
-        num = Word(nums)
-        term = ident | num
-        func = ident + Optional(delimitedList(term))
-        print(func.parseString("fn a, b, 100"))  # -> ['fn', 'a', 'b', '100']
-
-        func = ident + Group(Optional(delimitedList(term)))
-        print(func.parseString("fn a, b, 100"))  # -> ['fn', ['a', 'b', '100']]
-    """
-    def __init__(self, expr):
-        super(Group, self).__init__(expr)
-        self.saveAsList = True
-
-    def postParse(self, instring, loc, tokenlist):
-        return [tokenlist]
-
-class Dict(TokenConverter):
-    """Converter to return a repetitive expression as a list, but also
-    as a dictionary. Each element can also be referenced using the first
-    token in the expression as its key. Useful for tabular report
-    scraping when the first column can be used as a item key.
-
-    Example::
-
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
-
-        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
-        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-
-        # print attributes as plain groups
-        print(OneOrMore(attr_expr).parseString(text).dump())
-
-        # instead of OneOrMore(expr), parse using Dict(OneOrMore(Group(expr))) - Dict will auto-assign names
-        result = Dict(OneOrMore(Group(attr_expr))).parseString(text)
-        print(result.dump())
-
-        # access named fields as dict entries, or output as dict
-        print(result['shape'])
-        print(result.asDict())
-
-    prints::
-
-        ['shape', 'SQUARE', 'posn', 'upper left', 'color', 'light blue', 'texture', 'burlap']
-        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
-        - color: light blue
-        - posn: upper left
-        - shape: SQUARE
-        - texture: burlap
-        SQUARE
-        {'color': 'light blue', 'posn': 'upper left', 'texture': 'burlap', 'shape': 'SQUARE'}
-
-    See more examples at :class:`ParseResults` of accessing fields by results name.
-    """
-    def __init__(self, expr):
-        super(Dict, self).__init__(expr)
-        self.saveAsList = True
-
-    def postParse(self, instring, loc, tokenlist):
-        for i, tok in enumerate(tokenlist):
-            if len(tok) == 0:
-                continue
-            ikey = tok[0]
-            if isinstance(ikey, int):
-                ikey = _ustr(tok[0]).strip()
-            if len(tok) == 1:
-                tokenlist[ikey] = _ParseResultsWithOffset("", i)
-            elif len(tok) == 2 and not isinstance(tok[1], ParseResults):
-                tokenlist[ikey] = _ParseResultsWithOffset(tok[1], i)
-            else:
-                dictvalue = tok.copy()  # ParseResults(i)
-                del dictvalue[0]
-                if len(dictvalue) != 1 or (isinstance(dictvalue, ParseResults) and dictvalue.haskeys()):
-                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue, i)
-                else:
-                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue[0], i)
-
-        if self.resultsName:
-            return [tokenlist]
-        else:
-            return tokenlist
-
-
-class Suppress(TokenConverter):
-    """Converter for ignoring the results of a parsed expression.
-
-    Example::
-
-        source = "a, b, c,d"
-        wd = Word(alphas)
-        wd_list1 = wd + ZeroOrMore(',' + wd)
-        print(wd_list1.parseString(source))
-
-        # often, delimiters that are useful during parsing are just in the
-        # way afterward - use Suppress to keep them out of the parsed output
-        wd_list2 = wd + ZeroOrMore(Suppress(',') + wd)
-        print(wd_list2.parseString(source))
-
-    prints::
-
-        ['a', ',', 'b', ',', 'c', ',', 'd']
-        ['a', 'b', 'c', 'd']
-
-    (See also :class:`delimitedList`.)
-    """
-    def postParse(self, instring, loc, tokenlist):
-        return []
-
-    def suppress(self):
-        return self
-
-
-class OnlyOnce(object):
-    """Wrapper for parse actions, to ensure they are only called once.
-    """
-    def __init__(self, methodCall):
-        self.callable = _trim_arity(methodCall)
-        self.called = False
-    def __call__(self, s, l, t):
-        if not self.called:
-            results = self.callable(s, l, t)
-            self.called = True
-            return results
-        raise ParseException(s, l, "")
-    def reset(self):
-        self.called = False
-
-def traceParseAction(f):
-    """Decorator for debugging parse actions.
-
-    When the parse action is called, this decorator will print
-    ``">> entering method-name(line:<current_source_line>, <parse_location>, <matched_tokens>)"``.
-    When the parse action completes, the decorator will print
-    ``"<<"`` followed by the returned value, or any exception that the parse action raised.
-
-    Example::
-
-        wd = Word(alphas)
-
-        @traceParseAction
-        def remove_duplicate_chars(tokens):
-            return ''.join(sorted(set(''.join(tokens))))
-
-        wds = OneOrMore(wd).setParseAction(remove_duplicate_chars)
-        print(wds.parseString("slkdjs sld sldd sdlf sdljf"))
-
-    prints::
-
-        >>entering remove_duplicate_chars(line: 'slkdjs sld sldd sdlf sdljf', 0, (['slkdjs', 'sld', 'sldd', 'sdlf', 'sdljf'], {}))
-        <<leaving remove_duplicate_chars (ret: 'dfjkls')
-        ['dfjkls']
-    """
-    f = _trim_arity(f)
-    def z(*paArgs):
-        thisFunc = f.__name__
-        s, l, t = paArgs[-3:]
-        if len(paArgs) > 3:
-            thisFunc = paArgs[0].__class__.__name__ + '.' + thisFunc
-        sys.stderr.write(">>entering %s(line: '%s', %d, %r)\n" % (thisFunc, line(l, s), l, t))
-        try:
-            ret = f(*paArgs)
-        except Exception as exc:
-            sys.stderr.write("<<leaving %s (exception: %s)\n" % (thisFunc, exc))
-            raise
-        sys.stderr.write("<<leaving %s (ret: %r)\n" % (thisFunc, ret))
-        return ret
-    try:
-        z.__name__ = f.__name__
-    except AttributeError:
-        pass
-    return z
-
-#
-# global helpers
-#
-def delimitedList(expr, delim=",", combine=False):
-    """Helper to define a delimited list of expressions - the delimiter
-    defaults to ','. By default, the list elements and delimiters can
-    have intervening whitespace, and comments, but this can be
-    overridden by passing ``combine=True`` in the constructor. If
-    ``combine`` is set to ``True``, the matching tokens are
-    returned as a single token string, with the delimiters included;
-    otherwise, the matching tokens are returned as a list of tokens,
-    with the delimiters suppressed.
-
-    Example::
-
-        delimitedList(Word(alphas)).parseString("aa,bb,cc") # -> ['aa', 'bb', 'cc']
-        delimitedList(Word(hexnums), delim=':', combine=True).parseString("AA:BB:CC:DD:EE") # -> ['AA:BB:CC:DD:EE']
-    """
-    dlName = _ustr(expr) + " [" + _ustr(delim) + " " + _ustr(expr) + "]..."
-    if combine:
-        return Combine(expr + ZeroOrMore(delim + expr)).setName(dlName)
-    else:
-        return (expr + ZeroOrMore(Suppress(delim) + expr)).setName(dlName)
-
-def countedArray(expr, intExpr=None):
-    """Helper to define a counted list of expressions.
-
-    This helper defines a pattern of the form::
-
-        integer expr expr expr...
-
-    where the leading integer tells how many expr expressions follow.
-    The matched tokens returns the array of expr tokens as a list - the
-    leading count token is suppressed.
-
-    If ``intExpr`` is specified, it should be a pyparsing expression
-    that produces an integer value.
-
-    Example::
-
-        countedArray(Word(alphas)).parseString('2 ab cd ef')  # -> ['ab', 'cd']
-
-        # in this parser, the leading integer value is given in binary,
-        # '10' indicating that 2 values are in the array
-        binaryConstant = Word('01').setParseAction(lambda t: int(t[0], 2))
-        countedArray(Word(alphas), intExpr=binaryConstant).parseString('10 ab cd ef')  # -> ['ab', 'cd']
-    """
-    arrayExpr = Forward()
-    def countFieldParseAction(s, l, t):
-        n = t[0]
-        arrayExpr << (n and Group(And([expr] * n)) or Group(empty))
-        return []
-    if intExpr is None:
-        intExpr = Word(nums).setParseAction(lambda t: int(t[0]))
-    else:
-        intExpr = intExpr.copy()
-    intExpr.setName("arrayLen")
-    intExpr.addParseAction(countFieldParseAction, callDuringTry=True)
-    return (intExpr + arrayExpr).setName('(len) ' + _ustr(expr) + '...')
-
-def _flatten(L):
-    ret = []
-    for i in L:
-        if isinstance(i, list):
-            ret.extend(_flatten(i))
-        else:
-            ret.append(i)
-    return ret
-
-def matchPreviousLiteral(expr):
-    """Helper to define an expression that is indirectly defined from
-    the tokens matched in a previous expression, that is, it looks for
-    a 'repeat' of a previous expression.  For example::
-
-        first = Word(nums)
-        second = matchPreviousLiteral(first)
-        matchExpr = first + ":" + second
-
-    will match ``"1:1"``, but not ``"1:2"``.  Because this
-    matches a previous literal, will also match the leading
-    ``"1:1"`` in ``"1:10"``. If this is not desired, use
-    :class:`matchPreviousExpr`. Do *not* use with packrat parsing
-    enabled.
-    """
-    rep = Forward()
-    def copyTokenToRepeater(s, l, t):
-        if t:
-            if len(t) == 1:
-                rep << t[0]
-            else:
-                # flatten t tokens
-                tflat = _flatten(t.asList())
-                rep << And(Literal(tt) for tt in tflat)
-        else:
-            rep << Empty()
-    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
-    rep.setName('(prev) ' + _ustr(expr))
-    return rep
-
-def matchPreviousExpr(expr):
-    """Helper to define an expression that is indirectly defined from
-    the tokens matched in a previous expression, that is, it looks for
-    a 'repeat' of a previous expression.  For example::
-
-        first = Word(nums)
-        second = matchPreviousExpr(first)
-        matchExpr = first + ":" + second
-
-    will match ``"1:1"``, but not ``"1:2"``.  Because this
-    matches by expressions, will *not* match the leading ``"1:1"``
-    in ``"1:10"``; the expressions are evaluated first, and then
-    compared, so ``"1"`` is compared with ``"10"``. Do *not* use
-    with packrat parsing enabled.
-    """
-    rep = Forward()
-    e2 = expr.copy()
-    rep <<= e2
-    def copyTokenToRepeater(s, l, t):
-        matchTokens = _flatten(t.asList())
-        def mustMatchTheseTokens(s, l, t):
-            theseTokens = _flatten(t.asList())
-            if theseTokens != matchTokens:
-                raise ParseException('', 0, '')
-        rep.setParseAction(mustMatchTheseTokens, callDuringTry=True)
-    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
-    rep.setName('(prev) ' + _ustr(expr))
-    return rep
-
-def _escapeRegexRangeChars(s):
-    # ~  escape these chars: ^-[]
-    for c in r"\^-[]":
-        s = s.replace(c, _bslash + c)
-    s = s.replace("\n", r"\n")
-    s = s.replace("\t", r"\t")
-    return _ustr(s)
-
-def oneOf(strs, caseless=False, useRegex=True, asKeyword=False):
-    """Helper to quickly define a set of alternative Literals, and makes
-    sure to do longest-first testing when there is a conflict,
-    regardless of the input order, but returns
-    a :class:`MatchFirst` for best performance.
-
-    Parameters:
-
-     - strs - a string of space-delimited literals, or a collection of
-       string literals
-     - caseless - (default= ``False``) - treat all literals as
-       caseless
-     - useRegex - (default= ``True``) - as an optimization, will
-       generate a Regex object; otherwise, will generate
-       a :class:`MatchFirst` object (if ``caseless=True`` or ``asKeyword=True``, or if
-       creating a :class:`Regex` raises an exception)
-     - asKeyword - (default=``False``) - enforce Keyword-style matching on the
-       generated expressions
-
-    Example::
-
-        comp_oper = oneOf("< = > <= >= !=")
-        var = Word(alphas)
-        number = Word(nums)
-        term = var | number
-        comparison_expr = term + comp_oper + term
-        print(comparison_expr.searchString("B = 12  AA=23 B<=AA AA>12"))
-
-    prints::
-
-        [['B', '=', '12'], ['AA', '=', '23'], ['B', '<=', 'AA'], ['AA', '>', '12']]
-    """
-    if isinstance(caseless, basestring):
-        warnings.warn("More than one string argument passed to oneOf, pass "
-                      "choices as a list or space-delimited string", stacklevel=2)
-
-    if caseless:
-        isequal = (lambda a, b: a.upper() == b.upper())
-        masks = (lambda a, b: b.upper().startswith(a.upper()))
-        parseElementClass = CaselessKeyword if asKeyword else CaselessLiteral
-    else:
-        isequal = (lambda a, b: a == b)
-        masks = (lambda a, b: b.startswith(a))
-        parseElementClass = Keyword if asKeyword else Literal
-
-    symbols = []
-    if isinstance(strs, basestring):
-        symbols = strs.split()
-    elif isinstance(strs, Iterable):
-        symbols = list(strs)
-    else:
-        warnings.warn("Invalid argument to oneOf, expected string or iterable",
-                      SyntaxWarning, stacklevel=2)
-    if not symbols:
-        return NoMatch()
-
-    if not asKeyword:
-        # if not producing keywords, need to reorder to take care to avoid masking
-        # longer choices with shorter ones
-        i = 0
-        while i < len(symbols) - 1:
-            cur = symbols[i]
-            for j, other in enumerate(symbols[i + 1:]):
-                if isequal(other, cur):
-                    del symbols[i + j + 1]
-                    break
-                elif masks(cur, other):
-                    del symbols[i + j + 1]
-                    symbols.insert(i, other)
-                    break
-            else:
-                i += 1
-
-    if not (caseless or asKeyword) and useRegex:
-        # ~ print (strs, "->", "|".join([_escapeRegexChars(sym) for sym in symbols]))
-        try:
-            if len(symbols) == len("".join(symbols)):
-                return Regex("[%s]" % "".join(_escapeRegexRangeChars(sym) for sym in symbols)).setName(' | '.join(symbols))
-            else:
-                return Regex("|".join(re.escape(sym) for sym in symbols)).setName(' | '.join(symbols))
-        except Exception:
-            warnings.warn("Exception creating Regex for oneOf, building MatchFirst",
-                    SyntaxWarning, stacklevel=2)
-
-    # last resort, just use MatchFirst
-    return MatchFirst(parseElementClass(sym) for sym in symbols).setName(' | '.join(symbols))
-
-def dictOf(key, value):
-    """Helper to easily and clearly define a dictionary by specifying
-    the respective patterns for the key and value.  Takes care of
-    defining the :class:`Dict`, :class:`ZeroOrMore`, and
-    :class:`Group` tokens in the proper order.  The key pattern
-    can include delimiting markers or punctuation, as long as they are
-    suppressed, thereby leaving the significant key text.  The value
-    pattern can include named results, so that the :class:`Dict` results
-    can include named token fields.
-
-    Example::
-
-        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
-        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        print(OneOrMore(attr_expr).parseString(text).dump())
-
-        attr_label = label
-        attr_value = Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join)
-
-        # similar to Dict, but simpler call format
-        result = dictOf(attr_label, attr_value).parseString(text)
-        print(result.dump())
-        print(result['shape'])
-        print(result.shape)  # object attribute access works too
-        print(result.asDict())
-
-    prints::
-
-        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
-        - color: light blue
-        - posn: upper left
-        - shape: SQUARE
-        - texture: burlap
-        SQUARE
-        SQUARE
-        {'color': 'light blue', 'shape': 'SQUARE', 'posn': 'upper left', 'texture': 'burlap'}
-    """
-    return Dict(OneOrMore(Group(key + value)))
-
-def originalTextFor(expr, asString=True):
-    """Helper to return the original, untokenized text for a given
-    expression.  Useful to restore the parsed fields of an HTML start
-    tag into the raw tag text itself, or to revert separate tokens with
-    intervening whitespace back to the original matching input text. By
-    default, returns astring containing the original parsed text.
-
-    If the optional ``asString`` argument is passed as
-    ``False``, then the return value is
-    a :class:`ParseResults` containing any results names that
-    were originally matched, and a single token containing the original
-    matched text from the input string.  So if the expression passed to
-    :class:`originalTextFor` contains expressions with defined
-    results names, you must set ``asString`` to ``False`` if you
-    want to preserve those results name values.
-
-    Example::
-
-        src = "this is test <b> bold <i>text</i> </b> normal text "
-        for tag in ("b", "i"):
-            opener, closer = makeHTMLTags(tag)
-            patt = originalTextFor(opener + SkipTo(closer) + closer)
-            print(patt.searchString(src)[0])
-
-    prints::
-
-        ['<b> bold <i>text</i> </b>']
-        ['<i>text</i>']
-    """
-    locMarker = Empty().setParseAction(lambda s, loc, t: loc)
-    endlocMarker = locMarker.copy()
-    endlocMarker.callPreparse = False
-    matchExpr = locMarker("_original_start") + expr + endlocMarker("_original_end")
-    if asString:
-        extractText = lambda s, l, t: s[t._original_start: t._original_end]
-    else:
-        def extractText(s, l, t):
-            t[:] = [s[t.pop('_original_start'):t.pop('_original_end')]]
-    matchExpr.setParseAction(extractText)
-    matchExpr.ignoreExprs = expr.ignoreExprs
-    return matchExpr
-
-def ungroup(expr):
-    """Helper to undo pyparsing's default grouping of And expressions,
-    even if all but one are non-empty.
-    """
-    return TokenConverter(expr).addParseAction(lambda t: t[0])
-
-def locatedExpr(expr):
-    """Helper to decorate a returned token with its starting and ending
-    locations in the input string.
-
-    This helper adds the following results names:
-
-     - locn_start = location where matched expression begins
-     - locn_end = location where matched expression ends
-     - value = the actual parsed results
-
-    Be careful if the input text contains ``<TAB>`` characters, you
-    may want to call :class:`ParserElement.parseWithTabs`
-
-    Example::
-
-        wd = Word(alphas)
-        for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
-            print(match)
-
-    prints::
-
-        [[0, 'ljsdf', 5]]
-        [[8, 'lksdjjf', 15]]
-        [[18, 'lkkjj', 23]]
-    """
-    locator = Empty().setParseAction(lambda s, l, t: l)
-    return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
-
-
-# convenience constants for positional expressions
-empty       = Empty().setName("empty")
-lineStart   = LineStart().setName("lineStart")
-lineEnd     = LineEnd().setName("lineEnd")
-stringStart = StringStart().setName("stringStart")
-stringEnd   = StringEnd().setName("stringEnd")
-
-_escapedPunc = Word(_bslash, r"\[]-*.$+^?()~ ", exact=2).setParseAction(lambda s, l, t: t[0][1])
-_escapedHexChar = Regex(r"\\0?[xX][0-9a-fA-F]+").setParseAction(lambda s, l, t: unichr(int(t[0].lstrip(r'\0x'), 16)))
-_escapedOctChar = Regex(r"\\0[0-7]+").setParseAction(lambda s, l, t: unichr(int(t[0][1:], 8)))
-_singleChar = _escapedPunc | _escapedHexChar | _escapedOctChar | CharsNotIn(r'\]', exact=1)
-_charRange = Group(_singleChar + Suppress("-") + _singleChar)
-_reBracketExpr = Literal("[") + Optional("^").setResultsName("negate") + Group(OneOrMore(_charRange | _singleChar)).setResultsName("body") + "]"
-
-def srange(s):
-    r"""Helper to easily define string ranges for use in Word
-    construction. Borrows syntax from regexp '[]' string range
-    definitions::
-
-        srange("[0-9]")   -> "0123456789"
-        srange("[a-z]")   -> "abcdefghijklmnopqrstuvwxyz"
-        srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
-
-    The input string must be enclosed in []'s, and the returned string
-    is the expanded character set joined into a single string. The
-    values enclosed in the []'s may be:
-
-     - a single character
-     - an escaped character with a leading backslash (such as ``\-``
-       or ``\]``)
-     - an escaped hex character with a leading ``'\x'``
-       (``\x21``, which is a ``'!'`` character) (``\0x##``
-       is also supported for backwards compatibility)
-     - an escaped octal character with a leading ``'\0'``
-       (``\041``, which is a ``'!'`` character)
-     - a range of any of the above, separated by a dash (``'a-z'``,
-       etc.)
-     - any combination of the above (``'aeiouy'``,
-       ``'a-zA-Z0-9_$'``, etc.)
-    """
-    _expanded = lambda p: p if not isinstance(p, ParseResults) else ''.join(unichr(c) for c in range(ord(p[0]), ord(p[1]) + 1))
-    try:
-        return "".join(_expanded(part) for part in _reBracketExpr.parseString(s).body)
-    except Exception:
-        return ""
-
-def matchOnlyAtCol(n):
-    """Helper method for defining parse actions that require matching at
-    a specific column in the input text.
-    """
-    def verifyCol(strg, locn, toks):
-        if col(locn, strg) != n:
-            raise ParseException(strg, locn, "matched token not at column %d" % n)
-    return verifyCol
-
-def replaceWith(replStr):
-    """Helper method for common parse actions that simply return
-    a literal value.  Especially useful when used with
-    :class:`transformString<ParserElement.transformString>` ().
-
-    Example::
-
-        num = Word(nums).setParseAction(lambda toks: int(toks[0]))
-        na = oneOf("N/A NA").setParseAction(replaceWith(math.nan))
-        term = na | num
-
-        OneOrMore(term).parseString("324 234 N/A 234") # -> [324, 234, nan, 234]
-    """
-    return lambda s, l, t: [replStr]
-
-def removeQuotes(s, l, t):
-    """Helper parse action for removing quotation marks from parsed
-    quoted strings.
-
-    Example::
-
-        # by default, quotation marks are included in parsed results
-        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"]
-
-        # use removeQuotes to strip quotation marks from parsed results
-        quotedString.setParseAction(removeQuotes)
-        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"]
-    """
-    return t[0][1:-1]
-
-def tokenMap(func, *args):
-    """Helper to define a parse action by mapping a function to all
-    elements of a ParseResults list. If any additional args are passed,
-    they are forwarded to the given function as additional arguments
-    after the token, as in
-    ``hex_integer = Word(hexnums).setParseAction(tokenMap(int, 16))``,
-    which will convert the parsed data to an integer using base 16.
-
-    Example (compare the last to example in :class:`ParserElement.transformString`::
-
-        hex_ints = OneOrMore(Word(hexnums)).setParseAction(tokenMap(int, 16))
-        hex_ints.runTests('''
-            00 11 22 aa FF 0a 0d 1a
-            ''')
-
-        upperword = Word(alphas).setParseAction(tokenMap(str.upper))
-        OneOrMore(upperword).runTests('''
-            my kingdom for a horse
-            ''')
-
-        wd = Word(alphas).setParseAction(tokenMap(str.title))
-        OneOrMore(wd).setParseAction(' '.join).runTests('''
-            now is the winter of our discontent made glorious summer by this sun of york
-            ''')
-
-    prints::
-
-        00 11 22 aa FF 0a 0d 1a
-        [0, 17, 34, 170, 255, 10, 13, 26]
-
-        my kingdom for a horse
-        ['MY', 'KINGDOM', 'FOR', 'A', 'HORSE']
-
-        now is the winter of our discontent made glorious summer by this sun of york
-        ['Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York']
-    """
-    def pa(s, l, t):
-        return [func(tokn, *args) for tokn in t]
-
-    try:
-        func_name = getattr(func, '__name__',
-                            getattr(func, '__class__').__name__)
-    except Exception:
-        func_name = str(func)
-    pa.__name__ = func_name
-
-    return pa
-
-upcaseTokens = tokenMap(lambda t: _ustr(t).upper())
-"""(Deprecated) Helper parse action to convert tokens to upper case.
-Deprecated in favor of :class:`pyparsing_common.upcaseTokens`"""
-
-downcaseTokens = tokenMap(lambda t: _ustr(t).lower())
-"""(Deprecated) Helper parse action to convert tokens to lower case.
-Deprecated in favor of :class:`pyparsing_common.downcaseTokens`"""
-
-def _makeTags(tagStr, xml,
-              suppress_LT=Suppress("<"),
-              suppress_GT=Suppress(">")):
-    """Internal helper to construct opening and closing tag expressions, given a tag name"""
-    if isinstance(tagStr, basestring):
-        resname = tagStr
-        tagStr = Keyword(tagStr, caseless=not xml)
-    else:
-        resname = tagStr.name
-
-    tagAttrName = Word(alphas, alphanums + "_-:")
-    if xml:
-        tagAttrValue = dblQuotedString.copy().setParseAction(removeQuotes)
-        openTag = (suppress_LT
-                   + tagStr("tag")
-                   + Dict(ZeroOrMore(Group(tagAttrName + Suppress("=") + tagAttrValue)))
-                   + Optional("/", default=[False])("empty").setParseAction(lambda s, l, t: t[0] == '/')
-                   + suppress_GT)
-    else:
-        tagAttrValue = quotedString.copy().setParseAction(removeQuotes) | Word(printables, excludeChars=">")
-        openTag = (suppress_LT
-                   + tagStr("tag")
-                   + Dict(ZeroOrMore(Group(tagAttrName.setParseAction(downcaseTokens)
-                                           + Optional(Suppress("=") + tagAttrValue))))
-                   + Optional("/", default=[False])("empty").setParseAction(lambda s, l, t: t[0] == '/')
-                   + suppress_GT)
-    closeTag = Combine(_L("</") + tagStr + ">", adjacent=False)
-
-    openTag.setName("<%s>" % resname)
-    # add start<tagname> results name in parse action now that ungrouped names are not reported at two levels
-    openTag.addParseAction(lambda t: t.__setitem__("start" + "".join(resname.replace(":", " ").title().split()), t.copy()))
-    closeTag = closeTag("end" + "".join(resname.replace(":", " ").title().split())).setName("</%s>" % resname)
-    openTag.tag = resname
-    closeTag.tag = resname
-    openTag.tag_body = SkipTo(closeTag())
-    return openTag, closeTag
-
-def makeHTMLTags(tagStr):
-    """Helper to construct opening and closing tag expressions for HTML,
-    given a tag name. Matches tags in either upper or lower case,
-    attributes with namespaces and with quoted or unquoted values.
-
-    Example::
-
-        text = '<td>More info at the <a href="https://github.com/pyparsing/pyparsing/wiki">pyparsing</a> wiki page</td>'
-        # makeHTMLTags returns pyparsing expressions for the opening and
-        # closing tags as a 2-tuple
-        a, a_end = makeHTMLTags("A")
-        link_expr = a + SkipTo(a_end)("link_text") + a_end
-
-        for link in link_expr.searchString(text):
-            # attributes in the <A> tag (like "href" shown here) are
-            # also accessible as named results
-            print(link.link_text, '->', link.href)
-
-    prints::
-
-        pyparsing -> https://github.com/pyparsing/pyparsing/wiki
-    """
-    return _makeTags(tagStr, False)
-
-def makeXMLTags(tagStr):
-    """Helper to construct opening and closing tag expressions for XML,
-    given a tag name. Matches tags only in the given upper/lower case.
-
-    Example: similar to :class:`makeHTMLTags`
-    """
-    return _makeTags(tagStr, True)
-
-def withAttribute(*args, **attrDict):
-    """Helper to create a validating parse action to be used with start
-    tags created with :class:`makeXMLTags` or
-    :class:`makeHTMLTags`. Use ``withAttribute`` to qualify
-    a starting tag with a required attribute value, to avoid false
-    matches on common tags such as ``<TD>`` or ``<DIV>``.
-
-    Call ``withAttribute`` with a series of attribute names and
-    values. Specify the list of filter attributes names and values as:
-
-     - keyword arguments, as in ``(align="right")``, or
-     - as an explicit dict with ``**`` operator, when an attribute
-       name is also a Python reserved word, as in ``**{"class":"Customer", "align":"right"}``
-     - a list of name-value tuples, as in ``(("ns1:class", "Customer"), ("ns2:align", "right"))``
-
-    For attribute names with a namespace prefix, you must use the second
-    form.  Attribute names are matched insensitive to upper/lower case.
-
-    If just testing for ``class`` (with or without a namespace), use
-    :class:`withClass`.
-
-    To verify that the attribute exists, but without specifying a value,
-    pass ``withAttribute.ANY_VALUE`` as the value.
-
-    Example::
-
-        html = '''
-            <div>
-            Some text
-            <div type="grid">1 4 0 1 0</div>
-            <div type="graph">1,3 2,3 1,1</div>
-            <div>this has no type</div>
-            </div>
-
-        '''
-        div,div_end = makeHTMLTags("div")
-
-        # only match div tag having a type attribute with value "grid"
-        div_grid = div().setParseAction(withAttribute(type="grid"))
-        grid_expr = div_grid + SkipTo(div | div_end)("body")
-        for grid_header in grid_expr.searchString(html):
-            print(grid_header.body)
-
-        # construct a match with any div tag having a type attribute, regardless of the value
-        div_any_type = div().setParseAction(withAttribute(type=withAttribute.ANY_VALUE))
-        div_expr = div_any_type + SkipTo(div | div_end)("body")
-        for div_header in div_expr.searchString(html):
-            print(div_header.body)
-
-    prints::
-
-        1 4 0 1 0
-
-        1 4 0 1 0
-        1,3 2,3 1,1
-    """
-    if args:
-        attrs = args[:]
-    else:
-        attrs = attrDict.items()
-    attrs = [(k, v) for k, v in attrs]
-    def pa(s, l, tokens):
-        for attrName, attrValue in attrs:
-            if attrName not in tokens:
-                raise ParseException(s, l, "no matching attribute " + attrName)
-            if attrValue != withAttribute.ANY_VALUE and tokens[attrName] != attrValue:
-                raise ParseException(s, l, "attribute '%s' has value '%s', must be '%s'" %
-                                            (attrName, tokens[attrName], attrValue))
-    return pa
-withAttribute.ANY_VALUE = object()
-
-def withClass(classname, namespace=''):
-    """Simplified version of :class:`withAttribute` when
-    matching on a div class - made difficult because ``class`` is
-    a reserved word in Python.
-
-    Example::
-
-        html = '''
-            <div>
-            Some text
-            <div class="grid">1 4 0 1 0</div>
-            <div class="graph">1,3 2,3 1,1</div>
-            <div>this &lt;div&gt; has no class</div>
-            </div>
-
-        '''
-        div,div_end = makeHTMLTags("div")
-        div_grid = div().setParseAction(withClass("grid"))
-
-        grid_expr = div_grid + SkipTo(div | div_end)("body")
-        for grid_header in grid_expr.searchString(html):
-            print(grid_header.body)
-
-        div_any_type = div().setParseAction(withClass(withAttribute.ANY_VALUE))
-        div_expr = div_any_type + SkipTo(div | div_end)("body")
-        for div_header in div_expr.searchString(html):
-            print(div_header.body)
-
-    prints::
-
-        1 4 0 1 0
-
-        1 4 0 1 0
-        1,3 2,3 1,1
-    """
-    classattr = "%s:class" % namespace if namespace else "class"
-    return withAttribute(**{classattr: classname})
-
-opAssoc = SimpleNamespace()
-opAssoc.LEFT = object()
-opAssoc.RIGHT = object()
-
-def infixNotation(baseExpr, opList, lpar=Suppress('('), rpar=Suppress(')')):
-    """Helper method for constructing grammars of expressions made up of
-    operators working in a precedence hierarchy.  Operators may be unary
-    or binary, left- or right-associative.  Parse actions can also be
-    attached to operator expressions. The generated parser will also
-    recognize the use of parentheses to override operator precedences
-    (see example below).
-
-    Note: if you define a deep operator list, you may see performance
-    issues when using infixNotation. See
-    :class:`ParserElement.enablePackrat` for a mechanism to potentially
-    improve your parser performance.
-
-    Parameters:
-     - baseExpr - expression representing the most basic element for the
-       nested
-     - opList - list of tuples, one for each operator precedence level
-       in the expression grammar; each tuple is of the form ``(opExpr,
-       numTerms, rightLeftAssoc, parseAction)``, where:
-
-       - opExpr is the pyparsing expression for the operator; may also
-         be a string, which will be converted to a Literal; if numTerms
-         is 3, opExpr is a tuple of two expressions, for the two
-         operators separating the 3 terms
-       - numTerms is the number of terms for this operator (must be 1,
-         2, or 3)
-       - rightLeftAssoc is the indicator whether the operator is right
-         or left associative, using the pyparsing-defined constants
-         ``opAssoc.RIGHT`` and ``opAssoc.LEFT``.
-       - parseAction is the parse action to be associated with
-         expressions matching this operator expression (the parse action
-         tuple member may be omitted); if the parse action is passed
-         a tuple or list of functions, this is equivalent to calling
-         ``setParseAction(*fn)``
-         (:class:`ParserElement.setParseAction`)
-     - lpar - expression for matching left-parentheses
-       (default= ``Suppress('(')``)
-     - rpar - expression for matching right-parentheses
-       (default= ``Suppress(')')``)
-
-    Example::
-
-        # simple example of four-function arithmetic with ints and
-        # variable names
-        integer = pyparsing_common.signed_integer
-        varname = pyparsing_common.identifier
-
-        arith_expr = infixNotation(integer | varname,
-            [
-            ('-', 1, opAssoc.RIGHT),
-            (oneOf('* /'), 2, opAssoc.LEFT),
-            (oneOf('+ -'), 2, opAssoc.LEFT),
-            ])
-
-        arith_expr.runTests('''
-            5+3*6
-            (5+3)*6
-            -2--11
-            ''', fullDump=False)
-
-    prints::
-
-        5+3*6
-        [[5, '+', [3, '*', 6]]]
-
-        (5+3)*6
-        [[[5, '+', 3], '*', 6]]
-
-        -2--11
-        [[['-', 2], '-', ['-', 11]]]
-    """
-    # captive version of FollowedBy that does not do parse actions or capture results names
-    class _FB(FollowedBy):
-        def parseImpl(self, instring, loc, doActions=True):
-            self.expr.tryParse(instring, loc)
-            return loc, []
-
-    ret = Forward()
-    lastExpr = baseExpr | (lpar + ret + rpar)
-    for i, operDef in enumerate(opList):
-        opExpr, arity, rightLeftAssoc, pa = (operDef + (None, ))[:4]
-        termName = "%s term" % opExpr if arity < 3 else "%s%s term" % opExpr
-        if arity == 3:
-            if opExpr is None or len(opExpr) != 2:
-                raise ValueError(
-                    "if numterms=3, opExpr must be a tuple or list of two expressions")
-            opExpr1, opExpr2 = opExpr
-        thisExpr = Forward().setName(termName)
-        if rightLeftAssoc == opAssoc.LEFT:
-            if arity == 1:
-                matchExpr = _FB(lastExpr + opExpr) + Group(lastExpr + OneOrMore(opExpr))
-            elif arity == 2:
-                if opExpr is not None:
-                    matchExpr = _FB(lastExpr + opExpr + lastExpr) + Group(lastExpr + OneOrMore(opExpr + lastExpr))
-                else:
-                    matchExpr = _FB(lastExpr + lastExpr) + Group(lastExpr + OneOrMore(lastExpr))
-            elif arity == 3:
-                matchExpr = (_FB(lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr)
-                             + Group(lastExpr + OneOrMore(opExpr1 + lastExpr + opExpr2 + lastExpr)))
-            else:
-                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
-        elif rightLeftAssoc == opAssoc.RIGHT:
-            if arity == 1:
-                # try to avoid LR with this extra test
-                if not isinstance(opExpr, Optional):
-                    opExpr = Optional(opExpr)
-                matchExpr = _FB(opExpr.expr + thisExpr) + Group(opExpr + thisExpr)
-            elif arity == 2:
-                if opExpr is not None:
-                    matchExpr = _FB(lastExpr + opExpr + thisExpr) + Group(lastExpr + OneOrMore(opExpr + thisExpr))
-                else:
-                    matchExpr = _FB(lastExpr + thisExpr) + Group(lastExpr + OneOrMore(thisExpr))
-            elif arity == 3:
-                matchExpr = (_FB(lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr)
-                             + Group(lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr))
-            else:
-                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
-        else:
-            raise ValueError("operator must indicate right or left associativity")
-        if pa:
-            if isinstance(pa, (tuple, list)):
-                matchExpr.setParseAction(*pa)
-            else:
-                matchExpr.setParseAction(pa)
-        thisExpr <<= (matchExpr.setName(termName) | lastExpr)
-        lastExpr = thisExpr
-    ret <<= lastExpr
-    return ret
-
-operatorPrecedence = infixNotation
-"""(Deprecated) Former name of :class:`infixNotation`, will be
-dropped in a future release."""
-
-dblQuotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*') + '"').setName("string enclosed in double quotes")
-sglQuotedString = Combine(Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*") + "'").setName("string enclosed in single quotes")
-quotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*') + '"'
-                       | Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*") + "'").setName("quotedString using single or double quotes")
-unicodeString = Combine(_L('u') + quotedString.copy()).setName("unicode string literal")
-
-def nestedExpr(opener="(", closer=")", content=None, ignoreExpr=quotedString.copy()):
-    """Helper method for defining nested lists enclosed in opening and
-    closing delimiters ("(" and ")" are the default).
-
-    Parameters:
-     - opener - opening character for a nested list
-       (default= ``"("``); can also be a pyparsing expression
-     - closer - closing character for a nested list
-       (default= ``")"``); can also be a pyparsing expression
-     - content - expression for items within the nested lists
-       (default= ``None``)
-     - ignoreExpr - expression for ignoring opening and closing
-       delimiters (default= :class:`quotedString`)
-
-    If an expression is not provided for the content argument, the
-    nested expression will capture all whitespace-delimited content
-    between delimiters as a list of separate values.
-
-    Use the ``ignoreExpr`` argument to define expressions that may
-    contain opening or closing characters that should not be treated as
-    opening or closing characters for nesting, such as quotedString or
-    a comment expression.  Specify multiple expressions using an
-    :class:`Or` or :class:`MatchFirst`. The default is
-    :class:`quotedString`, but if no expressions are to be ignored, then
-    pass ``None`` for this argument.
-
-    Example::
-
-        data_type = oneOf("void int short long char float double")
-        decl_data_type = Combine(data_type + Optional(Word('*')))
-        ident = Word(alphas+'_', alphanums+'_')
-        number = pyparsing_common.number
-        arg = Group(decl_data_type + ident)
-        LPAR, RPAR = map(Suppress, "()")
-
-        code_body = nestedExpr('{', '}', ignoreExpr=(quotedString | cStyleComment))
-
-        c_function = (decl_data_type("type")
-                      + ident("name")
-                      + LPAR + Optional(delimitedList(arg), [])("args") + RPAR
-                      + code_body("body"))
-        c_function.ignore(cStyleComment)
-
-        source_code = '''
-            int is_odd(int x) {
-                return (x%2);
-            }
-
-            int dec_to_hex(char hchar) {
-                if (hchar >= '0' && hchar <= '9') {
-                    return (ord(hchar)-ord('0'));
-                } else {
-                    return (10+ord(hchar)-ord('A'));
-                }
-            }
-        '''
-        for func in c_function.searchString(source_code):
-            print("%(name)s (%(type)s) args: %(args)s" % func)
-
-
-    prints::
-
-        is_odd (int) args: [['int', 'x']]
-        dec_to_hex (int) args: [['char', 'hchar']]
-    """
-    if opener == closer:
-        raise ValueError("opening and closing strings cannot be the same")
-    if content is None:
-        if isinstance(opener, basestring) and isinstance(closer, basestring):
-            if len(opener) == 1 and len(closer) == 1:
-                if ignoreExpr is not None:
-                    content = (Combine(OneOrMore(~ignoreExpr
-                                                 + CharsNotIn(opener
-                                                              + closer
-                                                              + ParserElement.DEFAULT_WHITE_CHARS, exact=1)
-                                                 )
-                                       ).setParseAction(lambda t: t[0].strip()))
-                else:
-                    content = (empty.copy() + CharsNotIn(opener
-                                                         + closer
-                                                         + ParserElement.DEFAULT_WHITE_CHARS
-                                                         ).setParseAction(lambda t: t[0].strip()))
-            else:
-                if ignoreExpr is not None:
-                    content = (Combine(OneOrMore(~ignoreExpr
-                                                 + ~Literal(opener)
-                                                 + ~Literal(closer)
-                                                 + CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS, exact=1))
-                                       ).setParseAction(lambda t: t[0].strip()))
-                else:
-                    content = (Combine(OneOrMore(~Literal(opener)
-                                                 + ~Literal(closer)
-                                                 + CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS, exact=1))
-                                       ).setParseAction(lambda t: t[0].strip()))
-        else:
-            raise ValueError("opening and closing arguments must be strings if no content expression is given")
-    ret = Forward()
-    if ignoreExpr is not None:
-        ret <<= Group(Suppress(opener) + ZeroOrMore(ignoreExpr | ret | content) + Suppress(closer))
-    else:
-        ret <<= Group(Suppress(opener) + ZeroOrMore(ret | content)  + Suppress(closer))
-    ret.setName('nested %s%s expression' % (opener, closer))
-    return ret
-
-def indentedBlock(blockStatementExpr, indentStack, indent=True):
-    """Helper method for defining space-delimited indentation blocks,
-    such as those used to define block statements in Python source code.
-
-    Parameters:
-
-     - blockStatementExpr - expression defining syntax of statement that
-       is repeated within the indented block
-     - indentStack - list created by caller to manage indentation stack
-       (multiple statementWithIndentedBlock expressions within a single
-       grammar should share a common indentStack)
-     - indent - boolean indicating whether block must be indented beyond
-       the current level; set to False for block of left-most
-       statements (default= ``True``)
-
-    A valid block must contain at least one ``blockStatement``.
-
-    Example::
-
-        data = '''
-        def A(z):
-          A1
-          B = 100
-          G = A2
-          A2
-          A3
-        B
-        def BB(a,b,c):
-          BB1
-          def BBA():
-            bba1
-            bba2
-            bba3
-        C
-        D
-        def spam(x,y):
-             def eggs(z):
-                 pass
-        '''
-
-
-        indentStack = [1]
-        stmt = Forward()
-
-        identifier = Word(alphas, alphanums)
-        funcDecl = ("def" + identifier + Group("(" + Optional(delimitedList(identifier)) + ")") + ":")
-        func_body = indentedBlock(stmt, indentStack)
-        funcDef = Group(funcDecl + func_body)
-
-        rvalue = Forward()
-        funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
-        rvalue << (funcCall | identifier | Word(nums))
-        assignment = Group(identifier + "=" + rvalue)
-        stmt << (funcDef | assignment | identifier)
-
-        module_body = OneOrMore(stmt)
-
-        parseTree = module_body.parseString(data)
-        parseTree.pprint()
-
-    prints::
-
-        [['def',
-          'A',
-          ['(', 'z', ')'],
-          ':',
-          [['A1'], [['B', '=', '100']], [['G', '=', 'A2']], ['A2'], ['A3']]],
-         'B',
-         ['def',
-          'BB',
-          ['(', 'a', 'b', 'c', ')'],
-          ':',
-          [['BB1'], [['def', 'BBA', ['(', ')'], ':', [['bba1'], ['bba2'], ['bba3']]]]]],
-         'C',
-         'D',
-         ['def',
-          'spam',
-          ['(', 'x', 'y', ')'],
-          ':',
-          [[['def', 'eggs', ['(', 'z', ')'], ':', [['pass']]]]]]]
-    """
-    backup_stack = indentStack[:]
-
-    def reset_stack():
-        indentStack[:] = backup_stack
-
-    def checkPeerIndent(s, l, t):
-        if l >= len(s): return
-        curCol = col(l, s)
-        if curCol != indentStack[-1]:
-            if curCol > indentStack[-1]:
-                raise ParseException(s, l, "illegal nesting")
-            raise ParseException(s, l, "not a peer entry")
-
-    def checkSubIndent(s, l, t):
-        curCol = col(l, s)
-        if curCol > indentStack[-1]:
-            indentStack.append(curCol)
-        else:
-            raise ParseException(s, l, "not a subentry")
-
-    def checkUnindent(s, l, t):
-        if l >= len(s): return
-        curCol = col(l, s)
-        if not(indentStack and curCol in indentStack):
-            raise ParseException(s, l, "not an unindent")
-        if curCol < indentStack[-1]:
-            indentStack.pop()
-
-    NL = OneOrMore(LineEnd().setWhitespaceChars("\t ").suppress(), stopOn=StringEnd())
-    INDENT = (Empty() + Empty().setParseAction(checkSubIndent)).setName('INDENT')
-    PEER   = Empty().setParseAction(checkPeerIndent).setName('')
-    UNDENT = Empty().setParseAction(checkUnindent).setName('UNINDENT')
-    if indent:
-        smExpr = Group(Optional(NL)
-                       + INDENT
-                       + OneOrMore(PEER + Group(blockStatementExpr) + Optional(NL), stopOn=StringEnd())
-                       + UNDENT)
-    else:
-        smExpr = Group(Optional(NL)
-                       + OneOrMore(PEER + Group(blockStatementExpr) + Optional(NL), stopOn=StringEnd())
-                       + UNDENT)
-    smExpr.setFailAction(lambda a, b, c, d: reset_stack())
-    blockStatementExpr.ignore(_bslash + LineEnd())
-    return smExpr.setName('indented block')
-
-alphas8bit = srange(r"[\0xc0-\0xd6\0xd8-\0xf6\0xf8-\0xff]")
-punc8bit = srange(r"[\0xa1-\0xbf\0xd7\0xf7]")
-
-anyOpenTag, anyCloseTag = makeHTMLTags(Word(alphas, alphanums + "_:").setName('any tag'))
-_htmlEntityMap = dict(zip("gt lt amp nbsp quot apos".split(), '><& "\''))
-commonHTMLEntity = Regex('&(?P<entity>' + '|'.join(_htmlEntityMap.keys()) +");").setName("common HTML entity")
-def replaceHTMLEntity(t):
-    """Helper parser action to replace common HTML entities with their special characters"""
-    return _htmlEntityMap.get(t.entity)
-
-# it's easy to get these comment structures wrong - they're very common, so may as well make them available
-cStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/').setName("C style comment")
-"Comment of the form ``/* ... */``"
-
-htmlComment = Regex(r"<!--[\s\S]*?-->").setName("HTML comment")
-"Comment of the form ``<!-- ... -->``"
-
-restOfLine = Regex(r".*").leaveWhitespace().setName("rest of line")
-dblSlashComment = Regex(r"//(?:\\\n|[^\n])*").setName("// comment")
-"Comment of the form ``// ... (to end of line)``"
-
-cppStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/' | dblSlashComment).setName("C++ style comment")
-"Comment of either form :class:`cStyleComment` or :class:`dblSlashComment`"
-
-javaStyleComment = cppStyleComment
-"Same as :class:`cppStyleComment`"
-
-pythonStyleComment = Regex(r"#.*").setName("Python style comment")
-"Comment of the form ``# ... (to end of line)``"
-
-_commasepitem = Combine(OneOrMore(Word(printables, excludeChars=',')
-                                  + Optional(Word(" \t")
-                                             + ~Literal(",") + ~LineEnd()))).streamline().setName("commaItem")
-commaSeparatedList = delimitedList(Optional(quotedString.copy() | _commasepitem, default="")).setName("commaSeparatedList")
-"""(Deprecated) Predefined expression of 1 or more printable words or
-quoted strings, separated by commas.
-
-This expression is deprecated in favor of :class:`pyparsing_common.comma_separated_list`.
-"""
-
-# some other useful expressions - using lower-case class name since we are really using this as a namespace
-class pyparsing_common:
-    """Here are some common low-level expressions that may be useful in
-    jump-starting parser development:
-
-     - numeric forms (:class:`integers<integer>`, :class:`reals<real>`,
-       :class:`scientific notation<sci_real>`)
-     - common :class:`programming identifiers<identifier>`
-     - network addresses (:class:`MAC<mac_address>`,
-       :class:`IPv4<ipv4_address>`, :class:`IPv6<ipv6_address>`)
-     - ISO8601 :class:`dates<iso8601_date>` and
-       :class:`datetime<iso8601_datetime>`
-     - :class:`UUID<uuid>`
-     - :class:`comma-separated list<comma_separated_list>`
-
-    Parse actions:
-
-     - :class:`convertToInteger`
-     - :class:`convertToFloat`
-     - :class:`convertToDate`
-     - :class:`convertToDatetime`
-     - :class:`stripHTMLTags`
-     - :class:`upcaseTokens`
-     - :class:`downcaseTokens`
-
-    Example::
-
-        pyparsing_common.number.runTests('''
-            # any int or real number, returned as the appropriate type
-            100
-            -100
-            +100
-            3.14159
-            6.02e23
-            1e-12
-            ''')
-
-        pyparsing_common.fnumber.runTests('''
-            # any int or real number, returned as float
-            100
-            -100
-            +100
-            3.14159
-            6.02e23
-            1e-12
-            ''')
-
-        pyparsing_common.hex_integer.runTests('''
-            # hex numbers
-            100
-            FF
-            ''')
-
-        pyparsing_common.fraction.runTests('''
-            # fractions
-            1/2
-            -3/4
-            ''')
-
-        pyparsing_common.mixed_integer.runTests('''
-            # mixed fractions
-            1
-            1/2
-            -3/4
-            1-3/4
-            ''')
-
-        import uuid
-        pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
-        pyparsing_common.uuid.runTests('''
-            # uuid
-            12345678-1234-5678-1234-567812345678
-            ''')
-
-    prints::
-
-        # any int or real number, returned as the appropriate type
-        100
-        [100]
-
-        -100
-        [-100]
-
-        +100
-        [100]
-
-        3.14159
-        [3.14159]
-
-        6.02e23
-        [6.02e+23]
-
-        1e-12
-        [1e-12]
-
-        # any int or real number, returned as float
-        100
-        [100.0]
-
-        -100
-        [-100.0]
-
-        +100
-        [100.0]
-
-        3.14159
-        [3.14159]
-
-        6.02e23
-        [6.02e+23]
-
-        1e-12
-        [1e-12]
-
-        # hex numbers
-        100
-        [256]
-
-        FF
-        [255]
-
-        # fractions
-        1/2
-        [0.5]
-
-        -3/4
-        [-0.75]
-
-        # mixed fractions
-        1
-        [1]
-
-        1/2
-        [0.5]
-
-        -3/4
-        [-0.75]
-
-        1-3/4
-        [1.75]
-
-        # uuid
-        12345678-1234-5678-1234-567812345678
-        [UUID('12345678-1234-5678-1234-567812345678')]
-    """
-
-    convertToInteger = tokenMap(int)
-    """
-    Parse action for converting parsed integers to Python int
-    """
-
-    convertToFloat = tokenMap(float)
-    """
-    Parse action for converting parsed numbers to Python float
-    """
-
-    integer = Word(nums).setName("integer").setParseAction(convertToInteger)
-    """expression that parses an unsigned integer, returns an int"""
-
-    hex_integer = Word(hexnums).setName("hex integer").setParseAction(tokenMap(int, 16))
-    """expression that parses a hexadecimal integer, returns an int"""
-
-    signed_integer = Regex(r'[+-]?\d+').setName("signed integer").setParseAction(convertToInteger)
-    """expression that parses an integer with optional leading sign, returns an int"""
-
-    fraction = (signed_integer().setParseAction(convertToFloat) + '/' + signed_integer().setParseAction(convertToFloat)).setName("fraction")
-    """fractional expression of an integer divided by an integer, returns a float"""
-    fraction.addParseAction(lambda t: t[0]/t[-1])
-
-    mixed_integer = (fraction | signed_integer + Optional(Optional('-').suppress() + fraction)).setName("fraction or mixed integer-fraction")
-    """mixed integer of the form 'integer - fraction', with optional leading integer, returns float"""
-    mixed_integer.addParseAction(sum)
-
-    real = Regex(r'[+-]?(?:\d+\.\d*|\.\d+)').setName("real number").setParseAction(convertToFloat)
-    """expression that parses a floating point number and returns a float"""
-
-    sci_real = Regex(r'[+-]?(?:\d+(?:[eE][+-]?\d+)|(?:\d+\.\d*|\.\d+)(?:[eE][+-]?\d+)?)').setName("real number with scientific notation").setParseAction(convertToFloat)
-    """expression that parses a floating point number with optional
-    scientific notation and returns a float"""
-
-    # streamlining this expression makes the docs nicer-looking
-    number = (sci_real | real | signed_integer).streamline()
-    """any numeric expression, returns the corresponding Python type"""
-
-    fnumber = Regex(r'[+-]?\d+\.?\d*([eE][+-]?\d+)?').setName("fnumber").setParseAction(convertToFloat)
-    """any int or real number, returned as float"""
-
-    identifier = Word(alphas + '_', alphanums + '_').setName("identifier")
-    """typical code identifier (leading alpha or '_', followed by 0 or more alphas, nums, or '_')"""
-
-    ipv4_address = Regex(r'(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})){3}').setName("IPv4 address")
-    "IPv4 address (``0.0.0.0 - 255.255.255.255``)"
-
-    _ipv6_part = Regex(r'[0-9a-fA-F]{1,4}').setName("hex_integer")
-    _full_ipv6_address = (_ipv6_part + (':' + _ipv6_part) * 7).setName("full IPv6 address")
-    _short_ipv6_address = (Optional(_ipv6_part + (':' + _ipv6_part) * (0, 6))
-                           + "::"
-                           + Optional(_ipv6_part + (':' + _ipv6_part) * (0, 6))
-                           ).setName("short IPv6 address")
-    _short_ipv6_address.addCondition(lambda t: sum(1 for tt in t if pyparsing_common._ipv6_part.matches(tt)) < 8)
-    _mixed_ipv6_address = ("::ffff:" + ipv4_address).setName("mixed IPv6 address")
-    ipv6_address = Combine((_full_ipv6_address | _mixed_ipv6_address | _short_ipv6_address).setName("IPv6 address")).setName("IPv6 address")
-    "IPv6 address (long, short, or mixed form)"
-
-    mac_address = Regex(r'[0-9a-fA-F]{2}([:.-])[0-9a-fA-F]{2}(?:\1[0-9a-fA-F]{2}){4}').setName("MAC address")
-    "MAC address xx:xx:xx:xx:xx (may also have '-' or '.' delimiters)"
-
-    @staticmethod
-    def convertToDate(fmt="%Y-%m-%d"):
-        """
-        Helper to create a parse action for converting parsed date string to Python datetime.date
-
-        Params -
-         - fmt - format to be passed to datetime.strptime (default= ``"%Y-%m-%d"``)
-
-        Example::
-
-            date_expr = pyparsing_common.iso8601_date.copy()
-            date_expr.setParseAction(pyparsing_common.convertToDate())
-            print(date_expr.parseString("1999-12-31"))
-
-        prints::
-
-            [datetime.date(1999, 12, 31)]
-        """
-        def cvt_fn(s, l, t):
-            try:
-                return datetime.strptime(t[0], fmt).date()
-            except ValueError as ve:
-                raise ParseException(s, l, str(ve))
-        return cvt_fn
-
-    @staticmethod
-    def convertToDatetime(fmt="%Y-%m-%dT%H:%M:%S.%f"):
-        """Helper to create a parse action for converting parsed
-        datetime string to Python datetime.datetime
-
-        Params -
-         - fmt - format to be passed to datetime.strptime (default= ``"%Y-%m-%dT%H:%M:%S.%f"``)
-
-        Example::
-
-            dt_expr = pyparsing_common.iso8601_datetime.copy()
-            dt_expr.setParseAction(pyparsing_common.convertToDatetime())
-            print(dt_expr.parseString("1999-12-31T23:59:59.999"))
-
-        prints::
-
-            [datetime.datetime(1999, 12, 31, 23, 59, 59, 999000)]
-        """
-        def cvt_fn(s, l, t):
-            try:
-                return datetime.strptime(t[0], fmt)
-            except ValueError as ve:
-                raise ParseException(s, l, str(ve))
-        return cvt_fn
-
-    iso8601_date = Regex(r'(?P<year>\d{4})(?:-(?P<month>\d\d)(?:-(?P<day>\d\d))?)?').setName("ISO8601 date")
-    "ISO8601 date (``yyyy-mm-dd``)"
-
-    iso8601_datetime = Regex(r'(?P<year>\d{4})-(?P<month>\d\d)-(?P<day>\d\d)[T ](?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d(\.\d*)?)?)?(?P<tz>Z|[+-]\d\d:?\d\d)?').setName("ISO8601 datetime")
-    "ISO8601 datetime (``yyyy-mm-ddThh:mm:ss.s(Z|+-00:00)``) - trailing seconds, milliseconds, and timezone optional; accepts separating ``'T'`` or ``' '``"
-
-    uuid = Regex(r'[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}').setName("UUID")
-    "UUID (``xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx``)"
-
-    _html_stripper = anyOpenTag.suppress() | anyCloseTag.suppress()
-    @staticmethod
-    def stripHTMLTags(s, l, tokens):
-        """Parse action to remove HTML tags from web page HTML source
-
-        Example::
-
-            # strip HTML links from normal text
-            text = '<td>More info at the <a href="https://github.com/pyparsing/pyparsing/wiki">pyparsing</a> wiki page</td>'
-            td, td_end = makeHTMLTags("TD")
-            table_text = td + SkipTo(td_end).setParseAction(pyparsing_common.stripHTMLTags)("body") + td_end
-            print(table_text.parseString(text).body)
-
-        Prints::
-
-            More info at the pyparsing wiki page
-        """
-        return pyparsing_common._html_stripper.transformString(tokens[0])
-
-    _commasepitem = Combine(OneOrMore(~Literal(",")
-                                      + ~LineEnd()
-                                      + Word(printables, excludeChars=',')
-                                      + Optional(White(" \t")))).streamline().setName("commaItem")
-    comma_separated_list = delimitedList(Optional(quotedString.copy()
-                                                  | _commasepitem, default='')
-                                         ).setName("comma separated list")
-    """Predefined expression of 1 or more printable words or quoted strings, separated by commas."""
-
-    upcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).upper()))
-    """Parse action to convert tokens to upper case."""
-
-    downcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).lower()))
-    """Parse action to convert tokens to lower case."""
-
-
-class _lazyclassproperty(object):
-    def __init__(self, fn):
-        self.fn = fn
-        self.__doc__ = fn.__doc__
-        self.__name__ = fn.__name__
-
-    def __get__(self, obj, cls):
-        if cls is None:
-            cls = type(obj)
-        if not hasattr(cls, '_intern') or any(cls._intern is getattr(superclass, '_intern', [])
-                                              for superclass in cls.__mro__[1:]):
-            cls._intern = {}
-        attrname = self.fn.__name__
-        if attrname not in cls._intern:
-            cls._intern[attrname] = self.fn(cls)
-        return cls._intern[attrname]
-
-
-class unicode_set(object):
-    """
-    A set of Unicode characters, for language-specific strings for
-    ``alphas``, ``nums``, ``alphanums``, and ``printables``.
-    A unicode_set is defined by a list of ranges in the Unicode character
-    set, in a class attribute ``_ranges``, such as::
-
-        _ranges = [(0x0020, 0x007e), (0x00a0, 0x00ff),]
-
-    A unicode set can also be defined using multiple inheritance of other unicode sets::
-
-        class CJK(Chinese, Japanese, Korean):
-            pass
-    """
-    _ranges = []
-
-    @classmethod
-    def _get_chars_for_ranges(cls):
-        ret = []
-        for cc in cls.__mro__:
-            if cc is unicode_set:
-                break
-            for rr in cc._ranges:
-                ret.extend(range(rr[0], rr[-1] + 1))
-        return [unichr(c) for c in sorted(set(ret))]
-
-    @_lazyclassproperty
-    def printables(cls):
-        "all non-whitespace characters in this range"
-        return u''.join(filterfalse(unicode.isspace, cls._get_chars_for_ranges()))
-
-    @_lazyclassproperty
-    def alphas(cls):
-        "all alphabetic characters in this range"
-        return u''.join(filter(unicode.isalpha, cls._get_chars_for_ranges()))
-
-    @_lazyclassproperty
-    def nums(cls):
-        "all numeric digit characters in this range"
-        return u''.join(filter(unicode.isdigit, cls._get_chars_for_ranges()))
-
-    @_lazyclassproperty
-    def alphanums(cls):
-        "all alphanumeric characters in this range"
-        return cls.alphas + cls.nums
-
-
-class pyparsing_unicode(unicode_set):
-    """
-    A namespace class for defining common language unicode_sets.
-    """
-    _ranges = [(32, sys.maxunicode)]
-
-    class Latin1(unicode_set):
-        "Unicode set for Latin-1 Unicode Character Range"
-        _ranges = [(0x0020, 0x007e), (0x00a0, 0x00ff),]
-
-    class LatinA(unicode_set):
-        "Unicode set for Latin-A Unicode Character Range"
-        _ranges = [(0x0100, 0x017f),]
-
-    class LatinB(unicode_set):
-        "Unicode set for Latin-B Unicode Character Range"
-        _ranges = [(0x0180, 0x024f),]
-
-    class Greek(unicode_set):
-        "Unicode set for Greek Unicode Character Ranges"
-        _ranges = [
-            (0x0370, 0x03ff), (0x1f00, 0x1f15), (0x1f18, 0x1f1d), (0x1f20, 0x1f45), (0x1f48, 0x1f4d),
-            (0x1f50, 0x1f57), (0x1f59,), (0x1f5b,), (0x1f5d,), (0x1f5f, 0x1f7d), (0x1f80, 0x1fb4), (0x1fb6, 0x1fc4),
-            (0x1fc6, 0x1fd3), (0x1fd6, 0x1fdb), (0x1fdd, 0x1fef), (0x1ff2, 0x1ff4), (0x1ff6, 0x1ffe),
-        ]
-
-    class Cyrillic(unicode_set):
-        "Unicode set for Cyrillic Unicode Character Range"
-        _ranges = [(0x0400, 0x04ff)]
-
-    class Chinese(unicode_set):
-        "Unicode set for Chinese Unicode Character Range"
-        _ranges = [(0x4e00, 0x9fff), (0x3000, 0x303f),]
-
-    class Japanese(unicode_set):
-        "Unicode set for Japanese Unicode Character Range, combining Kanji, Hiragana, and Katakana ranges"
-        _ranges = []
-
-        class Kanji(unicode_set):
-            "Unicode set for Kanji Unicode Character Range"
-            _ranges = [(0x4E00, 0x9Fbf), (0x3000, 0x303f),]
-
-        class Hiragana(unicode_set):
-            "Unicode set for Hiragana Unicode Character Range"
-            _ranges = [(0x3040, 0x309f),]
-
-        class Katakana(unicode_set):
-            "Unicode set for Katakana  Unicode Character Range"
-            _ranges = [(0x30a0, 0x30ff),]
-
-    class Korean(unicode_set):
-        "Unicode set for Korean Unicode Character Range"
-        _ranges = [(0xac00, 0xd7af), (0x1100, 0x11ff), (0x3130, 0x318f), (0xa960, 0xa97f), (0xd7b0, 0xd7ff), (0x3000, 0x303f),]
-
-    class CJK(Chinese, Japanese, Korean):
-        "Unicode set for combined Chinese, Japanese, and Korean (CJK) Unicode Character Range"
-        pass
-
-    class Thai(unicode_set):
-        "Unicode set for Thai Unicode Character Range"
-        _ranges = [(0x0e01, 0x0e3a), (0x0e3f, 0x0e5b),]
-
-    class Arabic(unicode_set):
-        "Unicode set for Arabic Unicode Character Range"
-        _ranges = [(0x0600, 0x061b), (0x061e, 0x06ff), (0x0700, 0x077f),]
-
-    class Hebrew(unicode_set):
-        "Unicode set for Hebrew Unicode Character Range"
-        _ranges = [(0x0590, 0x05ff),]
-
-    class Devanagari(unicode_set):
-        "Unicode set for Devanagari Unicode Character Range"
-        _ranges = [(0x0900, 0x097f), (0xa8e0, 0xa8ff)]
-
-pyparsing_unicode.Japanese._ranges = (pyparsing_unicode.Japanese.Kanji._ranges
-                                      + pyparsing_unicode.Japanese.Hiragana._ranges
-                                      + pyparsing_unicode.Japanese.Katakana._ranges)
-
-# define ranges in language character sets
-if PY_3:
-    setattr(pyparsing_unicode, u"العربية", pyparsing_unicode.Arabic)
-    setattr(pyparsing_unicode, u"中文", pyparsing_unicode.Chinese)
-    setattr(pyparsing_unicode, u"кириллица", pyparsing_unicode.Cyrillic)
-    setattr(pyparsing_unicode, u"Ελληνικά", pyparsing_unicode.Greek)
-    setattr(pyparsing_unicode, u"עִברִית", pyparsing_unicode.Hebrew)
-    setattr(pyparsing_unicode, u"日本語", pyparsing_unicode.Japanese)
-    setattr(pyparsing_unicode.Japanese, u"漢字", pyparsing_unicode.Japanese.Kanji)
-    setattr(pyparsing_unicode.Japanese, u"カタカナ", pyparsing_unicode.Japanese.Katakana)
-    setattr(pyparsing_unicode.Japanese, u"ひらがな", pyparsing_unicode.Japanese.Hiragana)
-    setattr(pyparsing_unicode, u"한국어", pyparsing_unicode.Korean)
-    setattr(pyparsing_unicode, u"ไทย", pyparsing_unicode.Thai)
-    setattr(pyparsing_unicode, u"देवनागरी", pyparsing_unicode.Devanagari)
-
-
-class pyparsing_test:
-    """
-    namespace class for classes useful in writing unit tests
-    """
-
-    class reset_pyparsing_context:
-        """
-        Context manager to be used when writing unit tests that modify pyparsing config values:
-         - packrat parsing
-         - default whitespace characters.
-         - default keyword characters
-         - literal string auto-conversion class
-         - __diag__ settings
-
-        Example:
-            with reset_pyparsing_context():
-                # test that literals used to construct a grammar are automatically suppressed
-                ParserElement.inlineLiteralsUsing(Suppress)
-
-                term = Word(alphas) | Word(nums)
-                group = Group('(' + term[...] + ')')
-
-                # assert that the '()' characters are not included in the parsed tokens
-                self.assertParseAndCheckLisst(group, "(abc 123 def)", ['abc', '123', 'def'])
-
-            # after exiting context manager, literals are converted to Literal expressions again
-        """
-
-        def __init__(self):
-            self._save_context = {}
-
-        def save(self):
-            self._save_context["default_whitespace"] = ParserElement.DEFAULT_WHITE_CHARS
-            self._save_context["default_keyword_chars"] = Keyword.DEFAULT_KEYWORD_CHARS
-            self._save_context[
-                "literal_string_class"
-            ] = ParserElement._literalStringClass
-            self._save_context["packrat_enabled"] = ParserElement._packratEnabled
-            self._save_context["packrat_parse"] = ParserElement._parse
-            self._save_context["__diag__"] = {
-                name: getattr(__diag__, name) for name in __diag__._all_names
-            }
-            self._save_context["__compat__"] = {
-                "collect_all_And_tokens": __compat__.collect_all_And_tokens
-            }
-            return self
-
-        def restore(self):
-            # reset pyparsing global state
-            if (
-                ParserElement.DEFAULT_WHITE_CHARS
-                != self._save_context["default_whitespace"]
-            ):
-                ParserElement.setDefaultWhitespaceChars(
-                    self._save_context["default_whitespace"]
-                )
-            Keyword.DEFAULT_KEYWORD_CHARS = self._save_context["default_keyword_chars"]
-            ParserElement.inlineLiteralsUsing(
-                self._save_context["literal_string_class"]
-            )
-            for name, value in self._save_context["__diag__"].items():
-                setattr(__diag__, name, value)
-            ParserElement._packratEnabled = self._save_context["packrat_enabled"]
-            ParserElement._parse = self._save_context["packrat_parse"]
-            __compat__.collect_all_And_tokens = self._save_context["__compat__"]
-
-        def __enter__(self):
-            return self.save()
-
-        def __exit__(self, *args):
-            return self.restore()
-
-    class TestParseResultsAsserts:
-        """
-        A mixin class to add parse results assertion methods to normal unittest.TestCase classes.
-        """
-        def assertParseResultsEquals(
-            self, result, expected_list=None, expected_dict=None, msg=None
-        ):
-            """
-            Unit test assertion to compare a ParseResults object with an optional expected_list,
-            and compare any defined results names with an optional expected_dict.
-            """
-            if expected_list is not None:
-                self.assertEqual(expected_list, result.asList(), msg=msg)
-            if expected_dict is not None:
-                self.assertEqual(expected_dict, result.asDict(), msg=msg)
-
-        def assertParseAndCheckList(
-            self, expr, test_string, expected_list, msg=None, verbose=True
-        ):
-            """
-            Convenience wrapper assert to test a parser element and input string, and assert that
-            the resulting ParseResults.asList() is equal to the expected_list.
-            """
-            result = expr.parseString(test_string, parseAll=True)
-            if verbose:
-                print(result.dump())
-            self.assertParseResultsEquals(result, expected_list=expected_list, msg=msg)
-
-        def assertParseAndCheckDict(
-            self, expr, test_string, expected_dict, msg=None, verbose=True
-        ):
-            """
-            Convenience wrapper assert to test a parser element and input string, and assert that
-            the resulting ParseResults.asDict() is equal to the expected_dict.
-            """
-            result = expr.parseString(test_string, parseAll=True)
-            if verbose:
-                print(result.dump())
-            self.assertParseResultsEquals(result, expected_dict=expected_dict, msg=msg)
-
-        def assertRunTestResults(
-            self, run_tests_report, expected_parse_results=None, msg=None
-        ):
-            """
-            Unit test assertion to evaluate output of ParserElement.runTests(). If a list of
-            list-dict tuples is given as the expected_parse_results argument, then these are zipped
-            with the report tuples returned by runTests and evaluated using assertParseResultsEquals.
-            Finally, asserts that the overall runTests() success value is True.
-
-            :param run_tests_report: tuple(bool, [tuple(str, ParseResults or Exception)]) returned from runTests
-            :param expected_parse_results (optional): [tuple(str, list, dict, Exception)]
-            """
-            run_test_success, run_test_results = run_tests_report
-
-            if expected_parse_results is not None:
-                merged = [
-                    (rpt[0], rpt[1], expected)
-                    for rpt, expected in zip(run_test_results, expected_parse_results)
-                ]
-                for test_string, result, expected in merged:
-                    # expected should be a tuple containing a list and/or a dict or an exception,
-                    # and optional failure message string
-                    # an empty tuple will skip any result validation
-                    fail_msg = next(
-                        (exp for exp in expected if isinstance(exp, str)), None
-                    )
-                    expected_exception = next(
-                        (
-                            exp
-                            for exp in expected
-                            if isinstance(exp, type) and issubclass(exp, Exception)
-                        ),
-                        None,
-                    )
-                    if expected_exception is not None:
-                        with self.assertRaises(
-                            expected_exception=expected_exception, msg=fail_msg or msg
-                        ):
-                            if isinstance(result, Exception):
-                                raise result
-                    else:
-                        expected_list = next(
-                            (exp for exp in expected if isinstance(exp, list)), None
-                        )
-                        expected_dict = next(
-                            (exp for exp in expected if isinstance(exp, dict)), None
-                        )
-                        if (expected_list, expected_dict) != (None, None):
-                            self.assertParseResultsEquals(
-                                result,
-                                expected_list=expected_list,
-                                expected_dict=expected_dict,
-                                msg=fail_msg or msg,
-                            )
-                        else:
-                            # warning here maybe?
-                            print("no validation for {!r}".format(test_string))
-
-            # do this last, in case some specific test results can be reported instead
-            self.assertTrue(
-                run_test_success, msg=msg if msg is not None else "failed runTests"
-            )
-
-        @contextmanager
-        def assertRaisesParseException(self, exc_type=ParseException, msg=None):
-            with self.assertRaises(exc_type, msg=msg):
-                yield
-
-
-if __name__ == "__main__":
-
-    selectToken    = CaselessLiteral("select")
-    fromToken      = CaselessLiteral("from")
-
-    ident          = Word(alphas, alphanums + "_$")
-
-    columnName     = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
-    columnNameList = Group(delimitedList(columnName)).setName("columns")
-    columnSpec     = ('*' | columnNameList)
-
-    tableName      = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
-    tableNameList  = Group(delimitedList(tableName)).setName("tables")
-
-    simpleSQL      = selectToken("command") + columnSpec("columns") + fromToken + tableNameList("tables")
-
-    # demo runTests method, including embedded comments in test string
-    simpleSQL.runTests("""
-        # '*' as column list and dotted table name
-        select * from SYS.XYZZY
-
-        # caseless match on "SELECT", and casts back to "select"
-        SELECT * from XYZZY, ABC
-
-        # list of column names, and mixed case SELECT keyword
-        Select AA,BB,CC from Sys.dual
-
-        # multiple tables
-        Select A, B, C from Sys.dual, Table2
-
-        # invalid SELECT keyword - should fail
-        Xelect A, B, C from Sys.dual
-
-        # incomplete command - should fail
-        Select
-
-        # invalid column name - should fail
-        Select ^^^ frox Sys.dual
-
-        """)
-
-    pyparsing_common.number.runTests("""
-        100
-        -100
-        +100
-        3.14159
-        6.02e23
-        1e-12
-        """)
-
-    # any int or real number, returned as float
-    pyparsing_common.fnumber.runTests("""
-        100
-        -100
-        +100
-        3.14159
-        6.02e23
-        1e-12
-        """)
-
-    pyparsing_common.hex_integer.runTests("""
-        100
-        FF
-        """)
-
-    import uuid
-    pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
-    pyparsing_common.uuid.runTests("""
-        12345678-1234-5678-1234-567812345678
-        """)