Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/yaml/constructor.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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0
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1
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2 __all__ = [
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3 'BaseConstructor',
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4 'SafeConstructor',
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5 'FullConstructor',
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6 'UnsafeConstructor',
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7 'Constructor',
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8 'ConstructorError'
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9 ]
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10
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11 from .error import *
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12 from .nodes import *
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13
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14 import collections.abc, datetime, base64, binascii, re, sys, types
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15
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16 class ConstructorError(MarkedYAMLError):
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17 pass
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18
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19 class BaseConstructor:
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20
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21 yaml_constructors = {}
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22 yaml_multi_constructors = {}
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23
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24 def __init__(self):
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25 self.constructed_objects = {}
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26 self.recursive_objects = {}
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27 self.state_generators = []
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28 self.deep_construct = False
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29
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30 def check_data(self):
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31 # If there are more documents available?
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32 return self.check_node()
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33
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34 def check_state_key(self, key):
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35 """Block special attributes/methods from being set in a newly created
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36 object, to prevent user-controlled methods from being called during
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37 deserialization"""
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38 if self.get_state_keys_blacklist_regexp().match(key):
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39 raise ConstructorError(None, None,
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40 "blacklisted key '%s' in instance state found" % (key,), None)
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41
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42 def get_data(self):
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43 # Construct and return the next document.
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44 if self.check_node():
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45 return self.construct_document(self.get_node())
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46
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47 def get_single_data(self):
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48 # Ensure that the stream contains a single document and construct it.
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49 node = self.get_single_node()
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50 if node is not None:
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51 return self.construct_document(node)
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52 return None
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53
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54 def construct_document(self, node):
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55 data = self.construct_object(node)
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56 while self.state_generators:
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57 state_generators = self.state_generators
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58 self.state_generators = []
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59 for generator in state_generators:
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60 for dummy in generator:
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61 pass
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62 self.constructed_objects = {}
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63 self.recursive_objects = {}
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64 self.deep_construct = False
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65 return data
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66
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67 def construct_object(self, node, deep=False):
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68 if node in self.constructed_objects:
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69 return self.constructed_objects[node]
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70 if deep:
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71 old_deep = self.deep_construct
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72 self.deep_construct = True
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73 if node in self.recursive_objects:
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74 raise ConstructorError(None, None,
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75 "found unconstructable recursive node", node.start_mark)
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76 self.recursive_objects[node] = None
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77 constructor = None
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78 tag_suffix = None
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79 if node.tag in self.yaml_constructors:
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80 constructor = self.yaml_constructors[node.tag]
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81 else:
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82 for tag_prefix in self.yaml_multi_constructors:
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83 if tag_prefix is not None and node.tag.startswith(tag_prefix):
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84 tag_suffix = node.tag[len(tag_prefix):]
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85 constructor = self.yaml_multi_constructors[tag_prefix]
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86 break
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87 else:
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88 if None in self.yaml_multi_constructors:
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89 tag_suffix = node.tag
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90 constructor = self.yaml_multi_constructors[None]
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91 elif None in self.yaml_constructors:
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92 constructor = self.yaml_constructors[None]
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93 elif isinstance(node, ScalarNode):
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94 constructor = self.__class__.construct_scalar
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95 elif isinstance(node, SequenceNode):
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96 constructor = self.__class__.construct_sequence
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97 elif isinstance(node, MappingNode):
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98 constructor = self.__class__.construct_mapping
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99 if tag_suffix is None:
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100 data = constructor(self, node)
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101 else:
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102 data = constructor(self, tag_suffix, node)
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103 if isinstance(data, types.GeneratorType):
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104 generator = data
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105 data = next(generator)
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106 if self.deep_construct:
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107 for dummy in generator:
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108 pass
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109 else:
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110 self.state_generators.append(generator)
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111 self.constructed_objects[node] = data
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112 del self.recursive_objects[node]
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113 if deep:
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114 self.deep_construct = old_deep
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115 return data
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116
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117 def construct_scalar(self, node):
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118 if not isinstance(node, ScalarNode):
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119 raise ConstructorError(None, None,
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120 "expected a scalar node, but found %s" % node.id,
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121 node.start_mark)
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122 return node.value
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123
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124 def construct_sequence(self, node, deep=False):
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125 if not isinstance(node, SequenceNode):
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126 raise ConstructorError(None, None,
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127 "expected a sequence node, but found %s" % node.id,
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128 node.start_mark)
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129 return [self.construct_object(child, deep=deep)
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130 for child in node.value]
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131
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132 def construct_mapping(self, node, deep=False):
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133 if not isinstance(node, MappingNode):
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134 raise ConstructorError(None, None,
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135 "expected a mapping node, but found %s" % node.id,
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136 node.start_mark)
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137 mapping = {}
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138 for key_node, value_node in node.value:
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139 key = self.construct_object(key_node, deep=deep)
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140 if not isinstance(key, collections.abc.Hashable):
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141 raise ConstructorError("while constructing a mapping", node.start_mark,
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142 "found unhashable key", key_node.start_mark)
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143 value = self.construct_object(value_node, deep=deep)
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144 mapping[key] = value
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145 return mapping
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146
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147 def construct_pairs(self, node, deep=False):
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148 if not isinstance(node, MappingNode):
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149 raise ConstructorError(None, None,
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150 "expected a mapping node, but found %s" % node.id,
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151 node.start_mark)
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152 pairs = []
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153 for key_node, value_node in node.value:
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154 key = self.construct_object(key_node, deep=deep)
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155 value = self.construct_object(value_node, deep=deep)
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156 pairs.append((key, value))
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157 return pairs
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158
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159 @classmethod
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160 def add_constructor(cls, tag, constructor):
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161 if not 'yaml_constructors' in cls.__dict__:
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162 cls.yaml_constructors = cls.yaml_constructors.copy()
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163 cls.yaml_constructors[tag] = constructor
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164
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165 @classmethod
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166 def add_multi_constructor(cls, tag_prefix, multi_constructor):
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167 if not 'yaml_multi_constructors' in cls.__dict__:
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168 cls.yaml_multi_constructors = cls.yaml_multi_constructors.copy()
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169 cls.yaml_multi_constructors[tag_prefix] = multi_constructor
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170
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171 class SafeConstructor(BaseConstructor):
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172
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173 def construct_scalar(self, node):
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174 if isinstance(node, MappingNode):
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175 for key_node, value_node in node.value:
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176 if key_node.tag == 'tag:yaml.org,2002:value':
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177 return self.construct_scalar(value_node)
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178 return super().construct_scalar(node)
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179
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180 def flatten_mapping(self, node):
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181 merge = []
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182 index = 0
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183 while index < len(node.value):
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184 key_node, value_node = node.value[index]
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185 if key_node.tag == 'tag:yaml.org,2002:merge':
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186 del node.value[index]
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187 if isinstance(value_node, MappingNode):
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188 self.flatten_mapping(value_node)
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189 merge.extend(value_node.value)
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190 elif isinstance(value_node, SequenceNode):
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191 submerge = []
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192 for subnode in value_node.value:
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193 if not isinstance(subnode, MappingNode):
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194 raise ConstructorError("while constructing a mapping",
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195 node.start_mark,
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196 "expected a mapping for merging, but found %s"
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197 % subnode.id, subnode.start_mark)
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198 self.flatten_mapping(subnode)
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199 submerge.append(subnode.value)
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200 submerge.reverse()
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201 for value in submerge:
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202 merge.extend(value)
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203 else:
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204 raise ConstructorError("while constructing a mapping", node.start_mark,
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205 "expected a mapping or list of mappings for merging, but found %s"
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206 % value_node.id, value_node.start_mark)
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207 elif key_node.tag == 'tag:yaml.org,2002:value':
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208 key_node.tag = 'tag:yaml.org,2002:str'
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209 index += 1
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210 else:
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211 index += 1
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212 if merge:
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213 node.value = merge + node.value
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214
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215 def construct_mapping(self, node, deep=False):
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216 if isinstance(node, MappingNode):
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217 self.flatten_mapping(node)
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218 return super().construct_mapping(node, deep=deep)
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219
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220 def construct_yaml_null(self, node):
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221 self.construct_scalar(node)
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222 return None
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223
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224 bool_values = {
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225 'yes': True,
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226 'no': False,
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227 'true': True,
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228 'false': False,
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229 'on': True,
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230 'off': False,
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231 }
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232
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233 def construct_yaml_bool(self, node):
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234 value = self.construct_scalar(node)
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235 return self.bool_values[value.lower()]
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236
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237 def construct_yaml_int(self, node):
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238 value = self.construct_scalar(node)
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239 value = value.replace('_', '')
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240 sign = +1
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241 if value[0] == '-':
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242 sign = -1
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243 if value[0] in '+-':
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244 value = value[1:]
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245 if value == '0':
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246 return 0
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247 elif value.startswith('0b'):
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248 return sign*int(value[2:], 2)
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249 elif value.startswith('0x'):
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250 return sign*int(value[2:], 16)
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251 elif value[0] == '0':
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252 return sign*int(value, 8)
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253 elif ':' in value:
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254 digits = [int(part) for part in value.split(':')]
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255 digits.reverse()
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256 base = 1
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257 value = 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
258 for digit in digits:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
259 value += digit*base
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
260 base *= 60
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
261 return sign*value
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
262 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
263 return sign*int(value)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
264
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
265 inf_value = 1e300
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
266 while inf_value != inf_value*inf_value:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
267 inf_value *= inf_value
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
268 nan_value = -inf_value/inf_value # Trying to make a quiet NaN (like C99).
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
269
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
270 def construct_yaml_float(self, node):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
271 value = self.construct_scalar(node)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
272 value = value.replace('_', '').lower()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
273 sign = +1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
274 if value[0] == '-':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
275 sign = -1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
276 if value[0] in '+-':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
277 value = value[1:]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
278 if value == '.inf':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
279 return sign*self.inf_value
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
280 elif value == '.nan':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
281 return self.nan_value
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
282 elif ':' in value:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
283 digits = [float(part) for part in value.split(':')]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
284 digits.reverse()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
285 base = 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
286 value = 0.0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
287 for digit in digits:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
288 value += digit*base
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
289 base *= 60
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
290 return sign*value
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
291 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
292 return sign*float(value)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
293
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
294 def construct_yaml_binary(self, node):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
295 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
296 value = self.construct_scalar(node).encode('ascii')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
297 except UnicodeEncodeError as exc:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
298 raise ConstructorError(None, None,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
299 "failed to convert base64 data into ascii: %s" % exc,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
300 node.start_mark)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
301 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
302 if hasattr(base64, 'decodebytes'):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
303 return base64.decodebytes(value)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
304 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
305 return base64.decodestring(value)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
306 except binascii.Error as exc:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
307 raise ConstructorError(None, None,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
308 "failed to decode base64 data: %s" % exc, node.start_mark)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
309
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
310 timestamp_regexp = re.compile(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
311 r'''^(?P<year>[0-9][0-9][0-9][0-9])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
312 -(?P<month>[0-9][0-9]?)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
313 -(?P<day>[0-9][0-9]?)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
314 (?:(?:[Tt]|[ \t]+)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
315 (?P<hour>[0-9][0-9]?)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
316 :(?P<minute>[0-9][0-9])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
317 :(?P<second>[0-9][0-9])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
318 (?:\.(?P<fraction>[0-9]*))?
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
319 (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
320 (?::(?P<tz_minute>[0-9][0-9]))?))?)?$''', re.X)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
321
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
322 def construct_yaml_timestamp(self, node):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
323 value = self.construct_scalar(node)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
324 match = self.timestamp_regexp.match(node.value)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
325 values = match.groupdict()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
326 year = int(values['year'])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
327 month = int(values['month'])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
328 day = int(values['day'])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
329 if not values['hour']:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
330 return datetime.date(year, month, day)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
331 hour = int(values['hour'])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
332 minute = int(values['minute'])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
333 second = int(values['second'])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
334 fraction = 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
335 tzinfo = None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
336 if values['fraction']:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
337 fraction = values['fraction'][:6]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
338 while len(fraction) < 6:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
339 fraction += '0'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
340 fraction = int(fraction)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
341 if values['tz_sign']:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
342 tz_hour = int(values['tz_hour'])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
343 tz_minute = int(values['tz_minute'] or 0)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
344 delta = datetime.timedelta(hours=tz_hour, minutes=tz_minute)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
345 if values['tz_sign'] == '-':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
346 delta = -delta
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
347 tzinfo = datetime.timezone(delta)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
348 elif values['tz']:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
349 tzinfo = datetime.timezone.utc
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
350 return datetime.datetime(year, month, day, hour, minute, second, fraction,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
351 tzinfo=tzinfo)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
352
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
353 def construct_yaml_omap(self, node):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
354 # Note: we do not check for duplicate keys, because it's too
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
355 # CPU-expensive.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
356 omap = []
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
357 yield omap
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
358 if not isinstance(node, SequenceNode):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
359 raise ConstructorError("while constructing an ordered map", node.start_mark,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
360 "expected a sequence, but found %s" % node.id, node.start_mark)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
361 for subnode in node.value:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
362 if not isinstance(subnode, MappingNode):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
363 raise ConstructorError("while constructing an ordered map", node.start_mark,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
364 "expected a mapping of length 1, but found %s" % subnode.id,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
365 subnode.start_mark)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
366 if len(subnode.value) != 1:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
367 raise ConstructorError("while constructing an ordered map", node.start_mark,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
368 "expected a single mapping item, but found %d items" % len(subnode.value),
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
369 subnode.start_mark)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
370 key_node, value_node = subnode.value[0]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
371 key = self.construct_object(key_node)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
372 value = self.construct_object(value_node)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
373 omap.append((key, value))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
374
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
375 def construct_yaml_pairs(self, node):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
376 # Note: the same code as `construct_yaml_omap`.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
377 pairs = []
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
378 yield pairs
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
379 if not isinstance(node, SequenceNode):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
380 raise ConstructorError("while constructing pairs", node.start_mark,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
381 "expected a sequence, but found %s" % node.id, node.start_mark)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
382 for subnode in node.value:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
383 if not isinstance(subnode, MappingNode):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
384 raise ConstructorError("while constructing pairs", node.start_mark,
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parents:
diff changeset
385 "expected a mapping of length 1, but found %s" % subnode.id,
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parents:
diff changeset
386 subnode.start_mark)
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parents:
diff changeset
387 if len(subnode.value) != 1:
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diff changeset
388 raise ConstructorError("while constructing pairs", node.start_mark,
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parents:
diff changeset
389 "expected a single mapping item, but found %d items" % len(subnode.value),
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parents:
diff changeset
390 subnode.start_mark)
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parents:
diff changeset
391 key_node, value_node = subnode.value[0]
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parents:
diff changeset
392 key = self.construct_object(key_node)
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393 value = self.construct_object(value_node)
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diff changeset
394 pairs.append((key, value))
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395
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diff changeset
396 def construct_yaml_set(self, node):
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397 data = set()
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parents:
diff changeset
398 yield data
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parents:
diff changeset
399 value = self.construct_mapping(node)
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diff changeset
400 data.update(value)
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401
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diff changeset
402 def construct_yaml_str(self, node):
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parents:
diff changeset
403 return self.construct_scalar(node)
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parents:
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404
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parents:
diff changeset
405 def construct_yaml_seq(self, node):
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parents:
diff changeset
406 data = []
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parents:
diff changeset
407 yield data
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parents:
diff changeset
408 data.extend(self.construct_sequence(node))
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409
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410 def construct_yaml_map(self, node):
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parents:
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411 data = {}
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parents:
diff changeset
412 yield data
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parents:
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413 value = self.construct_mapping(node)
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414 data.update(value)
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415
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parents:
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416 def construct_yaml_object(self, node, cls):
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parents:
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417 data = cls.__new__(cls)
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parents:
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418 yield data
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parents:
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419 if hasattr(data, '__setstate__'):
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parents:
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420 state = self.construct_mapping(node, deep=True)
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parents:
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421 data.__setstate__(state)
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422 else:
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423 state = self.construct_mapping(node)
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parents:
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424 data.__dict__.update(state)
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parents:
diff changeset
425
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parents:
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426 def construct_undefined(self, node):
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parents:
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427 raise ConstructorError(None, None,
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parents:
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428 "could not determine a constructor for the tag %r" % node.tag,
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parents:
diff changeset
429 node.start_mark)
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parents:
diff changeset
430
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parents:
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431 SafeConstructor.add_constructor(
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diff changeset
432 'tag:yaml.org,2002:null',
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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433 SafeConstructor.construct_yaml_null)
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parents:
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434
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parents:
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435 SafeConstructor.add_constructor(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
436 'tag:yaml.org,2002:bool',
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parents:
diff changeset
437 SafeConstructor.construct_yaml_bool)
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parents:
diff changeset
438
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parents:
diff changeset
439 SafeConstructor.add_constructor(
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parents:
diff changeset
440 'tag:yaml.org,2002:int',
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parents:
diff changeset
441 SafeConstructor.construct_yaml_int)
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parents:
diff changeset
442
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parents:
diff changeset
443 SafeConstructor.add_constructor(
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parents:
diff changeset
444 'tag:yaml.org,2002:float',
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parents:
diff changeset
445 SafeConstructor.construct_yaml_float)
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parents:
diff changeset
446
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parents:
diff changeset
447 SafeConstructor.add_constructor(
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parents:
diff changeset
448 'tag:yaml.org,2002:binary',
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parents:
diff changeset
449 SafeConstructor.construct_yaml_binary)
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parents:
diff changeset
450
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parents:
diff changeset
451 SafeConstructor.add_constructor(
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parents:
diff changeset
452 'tag:yaml.org,2002:timestamp',
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parents:
diff changeset
453 SafeConstructor.construct_yaml_timestamp)
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parents:
diff changeset
454
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parents:
diff changeset
455 SafeConstructor.add_constructor(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
456 'tag:yaml.org,2002:omap',
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parents:
diff changeset
457 SafeConstructor.construct_yaml_omap)
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parents:
diff changeset
458
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parents:
diff changeset
459 SafeConstructor.add_constructor(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
460 'tag:yaml.org,2002:pairs',
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parents:
diff changeset
461 SafeConstructor.construct_yaml_pairs)
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parents:
diff changeset
462
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parents:
diff changeset
463 SafeConstructor.add_constructor(
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parents:
diff changeset
464 'tag:yaml.org,2002:set',
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parents:
diff changeset
465 SafeConstructor.construct_yaml_set)
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parents:
diff changeset
466
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parents:
diff changeset
467 SafeConstructor.add_constructor(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
468 'tag:yaml.org,2002:str',
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parents:
diff changeset
469 SafeConstructor.construct_yaml_str)
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parents:
diff changeset
470
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parents:
diff changeset
471 SafeConstructor.add_constructor(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
472 'tag:yaml.org,2002:seq',
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
473 SafeConstructor.construct_yaml_seq)
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parents:
diff changeset
474
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parents:
diff changeset
475 SafeConstructor.add_constructor(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
476 'tag:yaml.org,2002:map',
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
477 SafeConstructor.construct_yaml_map)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
478
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
479 SafeConstructor.add_constructor(None,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
480 SafeConstructor.construct_undefined)
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parents:
diff changeset
481
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
482 class FullConstructor(SafeConstructor):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
483 # 'extend' is blacklisted because it is used by
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
484 # construct_python_object_apply to add `listitems` to a newly generate
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parents:
diff changeset
485 # python instance
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parents:
diff changeset
486 def get_state_keys_blacklist(self):
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parents:
diff changeset
487 return ['^extend$', '^__.*__$']
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shellac
parents:
diff changeset
488
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shellac
parents:
diff changeset
489 def get_state_keys_blacklist_regexp(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
490 if not hasattr(self, 'state_keys_blacklist_regexp'):
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shellac
parents:
diff changeset
491 self.state_keys_blacklist_regexp = re.compile('(' + '|'.join(self.get_state_keys_blacklist()) + ')')
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shellac
parents:
diff changeset
492 return self.state_keys_blacklist_regexp
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shellac
parents:
diff changeset
493
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parents:
diff changeset
494 def construct_python_str(self, node):
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parents:
diff changeset
495 return self.construct_scalar(node)
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parents:
diff changeset
496
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parents:
diff changeset
497 def construct_python_unicode(self, node):
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parents:
diff changeset
498 return self.construct_scalar(node)
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parents:
diff changeset
499
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parents:
diff changeset
500 def construct_python_bytes(self, node):
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shellac
parents:
diff changeset
501 try:
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parents:
diff changeset
502 value = self.construct_scalar(node).encode('ascii')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
503 except UnicodeEncodeError as exc:
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parents:
diff changeset
504 raise ConstructorError(None, None,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
505 "failed to convert base64 data into ascii: %s" % exc,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
506 node.start_mark)
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shellac
parents:
diff changeset
507 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
508 if hasattr(base64, 'decodebytes'):
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shellac
parents:
diff changeset
509 return base64.decodebytes(value)
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parents:
diff changeset
510 else:
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shellac
parents:
diff changeset
511 return base64.decodestring(value)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
512 except binascii.Error as exc:
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parents:
diff changeset
513 raise ConstructorError(None, None,
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parents:
diff changeset
514 "failed to decode base64 data: %s" % exc, node.start_mark)
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515
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516 def construct_python_long(self, node):
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parents:
diff changeset
517 return self.construct_yaml_int(node)
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518
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519 def construct_python_complex(self, node):
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520 return complex(self.construct_scalar(node))
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521
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522 def construct_python_tuple(self, node):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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523 return tuple(self.construct_sequence(node))
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diff changeset
524
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525 def find_python_module(self, name, mark, unsafe=False):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
526 if not name:
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diff changeset
527 raise ConstructorError("while constructing a Python module", mark,
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parents:
diff changeset
528 "expected non-empty name appended to the tag", mark)
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529 if unsafe:
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530 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
531 __import__(name)
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532 except ImportError as exc:
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533 raise ConstructorError("while constructing a Python module", mark,
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534 "cannot find module %r (%s)" % (name, exc), mark)
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535 if name not in sys.modules:
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536 raise ConstructorError("while constructing a Python module", mark,
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537 "module %r is not imported" % name, mark)
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538 return sys.modules[name]
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539
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540 def find_python_name(self, name, mark, unsafe=False):
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diff changeset
541 if not name:
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542 raise ConstructorError("while constructing a Python object", mark,
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543 "expected non-empty name appended to the tag", mark)
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544 if '.' in name:
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545 module_name, object_name = name.rsplit('.', 1)
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546 else:
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547 module_name = 'builtins'
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548 object_name = name
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549 if unsafe:
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550 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
551 __import__(module_name)
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552 except ImportError as exc:
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553 raise ConstructorError("while constructing a Python object", mark,
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554 "cannot find module %r (%s)" % (module_name, exc), mark)
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parents:
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555 if module_name not in sys.modules:
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parents:
diff changeset
556 raise ConstructorError("while constructing a Python object", mark,
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557 "module %r is not imported" % module_name, mark)
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parents:
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558 module = sys.modules[module_name]
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559 if not hasattr(module, object_name):
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parents:
diff changeset
560 raise ConstructorError("while constructing a Python object", mark,
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561 "cannot find %r in the module %r"
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562 % (object_name, module.__name__), mark)
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parents:
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563 return getattr(module, object_name)
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564
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565 def construct_python_name(self, suffix, node):
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diff changeset
566 value = self.construct_scalar(node)
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567 if value:
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568 raise ConstructorError("while constructing a Python name", node.start_mark,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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569 "expected the empty value, but found %r" % value, node.start_mark)
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570 return self.find_python_name(suffix, node.start_mark)
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diff changeset
571
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diff changeset
572 def construct_python_module(self, suffix, node):
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573 value = self.construct_scalar(node)
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574 if value:
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diff changeset
575 raise ConstructorError("while constructing a Python module", node.start_mark,
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parents:
diff changeset
576 "expected the empty value, but found %r" % value, node.start_mark)
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parents:
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577 return self.find_python_module(suffix, node.start_mark)
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578
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579 def make_python_instance(self, suffix, node,
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diff changeset
580 args=None, kwds=None, newobj=False, unsafe=False):
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parents:
diff changeset
581 if not args:
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parents:
diff changeset
582 args = []
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
583 if not kwds:
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parents:
diff changeset
584 kwds = {}
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parents:
diff changeset
585 cls = self.find_python_name(suffix, node.start_mark)
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parents:
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586 if not (unsafe or isinstance(cls, type)):
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diff changeset
587 raise ConstructorError("while constructing a Python instance", node.start_mark,
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parents:
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588 "expected a class, but found %r" % type(cls),
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parents:
diff changeset
589 node.start_mark)
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parents:
diff changeset
590 if newobj and isinstance(cls, type):
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parents:
diff changeset
591 return cls.__new__(cls, *args, **kwds)
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parents:
diff changeset
592 else:
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diff changeset
593 return cls(*args, **kwds)
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diff changeset
594
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diff changeset
595 def set_python_instance_state(self, instance, state, unsafe=False):
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parents:
diff changeset
596 if hasattr(instance, '__setstate__'):
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diff changeset
597 instance.__setstate__(state)
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598 else:
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diff changeset
599 slotstate = {}
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diff changeset
600 if isinstance(state, tuple) and len(state) == 2:
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diff changeset
601 state, slotstate = state
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diff changeset
602 if hasattr(instance, '__dict__'):
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parents:
diff changeset
603 if not unsafe and state:
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parents:
diff changeset
604 for key in state.keys():
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parents:
diff changeset
605 self.check_state_key(key)
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parents:
diff changeset
606 instance.__dict__.update(state)
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diff changeset
607 elif state:
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parents:
diff changeset
608 slotstate.update(state)
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parents:
diff changeset
609 for key, value in slotstate.items():
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parents:
diff changeset
610 if not unsafe:
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diff changeset
611 self.check_state_key(key)
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parents:
diff changeset
612 setattr(instance, key, value)
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diff changeset
613
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parents:
diff changeset
614 def construct_python_object(self, suffix, node):
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diff changeset
615 # Format:
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616 # !!python/object:module.name { ... state ... }
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diff changeset
617 instance = self.make_python_instance(suffix, node, newobj=True)
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diff changeset
618 yield instance
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diff changeset
619 deep = hasattr(instance, '__setstate__')
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diff changeset
620 state = self.construct_mapping(node, deep=deep)
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621 self.set_python_instance_state(instance, state)
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diff changeset
622
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diff changeset
623 def construct_python_object_apply(self, suffix, node, newobj=False):
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diff changeset
624 # Format:
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diff changeset
625 # !!python/object/apply # (or !!python/object/new)
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diff changeset
626 # args: [ ... arguments ... ]
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diff changeset
627 # kwds: { ... keywords ... }
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diff changeset
628 # state: ... state ...
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diff changeset
629 # listitems: [ ... listitems ... ]
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diff changeset
630 # dictitems: { ... dictitems ... }
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diff changeset
631 # or short format:
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diff changeset
632 # !!python/object/apply [ ... arguments ... ]
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633 # The difference between !!python/object/apply and !!python/object/new
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634 # is how an object is created, check make_python_instance for details.
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635 if isinstance(node, SequenceNode):
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diff changeset
636 args = self.construct_sequence(node, deep=True)
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diff changeset
637 kwds = {}
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diff changeset
638 state = {}
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diff changeset
639 listitems = []
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diff changeset
640 dictitems = {}
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641 else:
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642 value = self.construct_mapping(node, deep=True)
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643 args = value.get('args', [])
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644 kwds = value.get('kwds', {})
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645 state = value.get('state', {})
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646 listitems = value.get('listitems', [])
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647 dictitems = value.get('dictitems', {})
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648 instance = self.make_python_instance(suffix, node, args, kwds, newobj)
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649 if state:
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650 self.set_python_instance_state(instance, state)
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651 if listitems:
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652 instance.extend(listitems)
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653 if dictitems:
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654 for key in dictitems:
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655 instance[key] = dictitems[key]
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656 return instance
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657
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658 def construct_python_object_new(self, suffix, node):
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659 return self.construct_python_object_apply(suffix, node, newobj=True)
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660
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661 FullConstructor.add_constructor(
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662 'tag:yaml.org,2002:python/none',
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663 FullConstructor.construct_yaml_null)
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664
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665 FullConstructor.add_constructor(
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666 'tag:yaml.org,2002:python/bool',
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667 FullConstructor.construct_yaml_bool)
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668
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669 FullConstructor.add_constructor(
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670 'tag:yaml.org,2002:python/str',
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671 FullConstructor.construct_python_str)
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672
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673 FullConstructor.add_constructor(
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674 'tag:yaml.org,2002:python/unicode',
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675 FullConstructor.construct_python_unicode)
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676
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677 FullConstructor.add_constructor(
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678 'tag:yaml.org,2002:python/bytes',
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679 FullConstructor.construct_python_bytes)
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680
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681 FullConstructor.add_constructor(
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682 'tag:yaml.org,2002:python/int',
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683 FullConstructor.construct_yaml_int)
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684
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685 FullConstructor.add_constructor(
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686 'tag:yaml.org,2002:python/long',
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687 FullConstructor.construct_python_long)
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688
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689 FullConstructor.add_constructor(
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690 'tag:yaml.org,2002:python/float',
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691 FullConstructor.construct_yaml_float)
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692
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693 FullConstructor.add_constructor(
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694 'tag:yaml.org,2002:python/complex',
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695 FullConstructor.construct_python_complex)
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696
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697 FullConstructor.add_constructor(
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698 'tag:yaml.org,2002:python/list',
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699 FullConstructor.construct_yaml_seq)
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700
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701 FullConstructor.add_constructor(
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702 'tag:yaml.org,2002:python/tuple',
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703 FullConstructor.construct_python_tuple)
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704
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705 FullConstructor.add_constructor(
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706 'tag:yaml.org,2002:python/dict',
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707 FullConstructor.construct_yaml_map)
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708
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709 FullConstructor.add_multi_constructor(
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710 'tag:yaml.org,2002:python/name:',
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711 FullConstructor.construct_python_name)
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712
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713 FullConstructor.add_multi_constructor(
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714 'tag:yaml.org,2002:python/module:',
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715 FullConstructor.construct_python_module)
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716
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717 FullConstructor.add_multi_constructor(
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718 'tag:yaml.org,2002:python/object:',
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719 FullConstructor.construct_python_object)
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720
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721 FullConstructor.add_multi_constructor(
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722 'tag:yaml.org,2002:python/object/new:',
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723 FullConstructor.construct_python_object_new)
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724
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725 class UnsafeConstructor(FullConstructor):
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diff changeset
726
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727 def find_python_module(self, name, mark):
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728 return super(UnsafeConstructor, self).find_python_module(name, mark, unsafe=True)
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729
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730 def find_python_name(self, name, mark):
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diff changeset
731 return super(UnsafeConstructor, self).find_python_name(name, mark, unsafe=True)
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732
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733 def make_python_instance(self, suffix, node, args=None, kwds=None, newobj=False):
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734 return super(UnsafeConstructor, self).make_python_instance(
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735 suffix, node, args, kwds, newobj, unsafe=True)
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736
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737 def set_python_instance_state(self, instance, state):
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738 return super(UnsafeConstructor, self).set_python_instance_state(
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739 instance, state, unsafe=True)
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740
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741 UnsafeConstructor.add_multi_constructor(
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742 'tag:yaml.org,2002:python/object/apply:',
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743 UnsafeConstructor.construct_python_object_apply)
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744
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745 # Constructor is same as UnsafeConstructor. Need to leave this in place in case
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746 # people have extended it directly.
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747 class Constructor(UnsafeConstructor):
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748 pass