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-rw-r--r--libs/dynaconf/vendor/ruamel/yaml/representer.py1283
1 files changed, 1283 insertions, 0 deletions
diff --git a/libs/dynaconf/vendor/ruamel/yaml/representer.py b/libs/dynaconf/vendor/ruamel/yaml/representer.py
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index 000000000..985c9b24f
--- /dev/null
+++ b/libs/dynaconf/vendor/ruamel/yaml/representer.py
@@ -0,0 +1,1283 @@
+# coding: utf-8
+
+from __future__ import print_function, absolute_import, division
+
+
+from .error import * # NOQA
+from .nodes import * # NOQA
+from .compat import text_type, binary_type, to_unicode, PY2, PY3
+from .compat import ordereddict # type: ignore
+from .compat import nprint, nprintf # NOQA
+from .scalarstring import (
+ LiteralScalarString,
+ FoldedScalarString,
+ SingleQuotedScalarString,
+ DoubleQuotedScalarString,
+ PlainScalarString,
+)
+from .scalarint import ScalarInt, BinaryInt, OctalInt, HexInt, HexCapsInt
+from .scalarfloat import ScalarFloat
+from .scalarbool import ScalarBoolean
+from .timestamp import TimeStamp
+
+import datetime
+import sys
+import types
+
+if PY3:
+ import copyreg
+ import base64
+else:
+ import copy_reg as copyreg # type: ignore
+
+if False: # MYPY
+ from typing import Dict, List, Any, Union, Text, Optional # NOQA
+
+# fmt: off
+__all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer',
+ 'RepresenterError', 'RoundTripRepresenter']
+# fmt: on
+
+
+class RepresenterError(YAMLError):
+ pass
+
+
+if PY2:
+
+ def get_classobj_bases(cls):
+ # type: (Any) -> Any
+ bases = [cls]
+ for base in cls.__bases__:
+ bases.extend(get_classobj_bases(base))
+ return bases
+
+
+class BaseRepresenter(object):
+
+ yaml_representers = {} # type: Dict[Any, Any]
+ yaml_multi_representers = {} # type: Dict[Any, Any]
+
+ def __init__(self, default_style=None, default_flow_style=None, dumper=None):
+ # type: (Any, Any, Any, Any) -> None
+ self.dumper = dumper
+ if self.dumper is not None:
+ self.dumper._representer = self
+ self.default_style = default_style
+ self.default_flow_style = default_flow_style
+ self.represented_objects = {} # type: Dict[Any, Any]
+ self.object_keeper = [] # type: List[Any]
+ self.alias_key = None # type: Optional[int]
+ self.sort_base_mapping_type_on_output = True
+
+ @property
+ def serializer(self):
+ # type: () -> Any
+ try:
+ if hasattr(self.dumper, 'typ'):
+ return self.dumper.serializer
+ return self.dumper._serializer
+ except AttributeError:
+ return self # cyaml
+
+ def represent(self, data):
+ # type: (Any) -> None
+ node = self.represent_data(data)
+ self.serializer.serialize(node)
+ self.represented_objects = {}
+ self.object_keeper = []
+ self.alias_key = None
+
+ def represent_data(self, data):
+ # type: (Any) -> Any
+ if self.ignore_aliases(data):
+ self.alias_key = None
+ else:
+ self.alias_key = id(data)
+ if self.alias_key is not None:
+ if self.alias_key in self.represented_objects:
+ node = self.represented_objects[self.alias_key]
+ # if node is None:
+ # raise RepresenterError(
+ # "recursive objects are not allowed: %r" % data)
+ return node
+ # self.represented_objects[alias_key] = None
+ self.object_keeper.append(data)
+ data_types = type(data).__mro__
+ if PY2:
+ # if type(data) is types.InstanceType:
+ if isinstance(data, types.InstanceType):
+ data_types = get_classobj_bases(data.__class__) + list(data_types)
+ if data_types[0] in self.yaml_representers:
+ node = self.yaml_representers[data_types[0]](self, data)
+ else:
+ for data_type in data_types:
+ if data_type in self.yaml_multi_representers:
+ node = self.yaml_multi_representers[data_type](self, data)
+ break
+ else:
+ if None in self.yaml_multi_representers:
+ node = self.yaml_multi_representers[None](self, data)
+ elif None in self.yaml_representers:
+ node = self.yaml_representers[None](self, data)
+ else:
+ node = ScalarNode(None, text_type(data))
+ # if alias_key is not None:
+ # self.represented_objects[alias_key] = node
+ return node
+
+ def represent_key(self, data):
+ # type: (Any) -> Any
+ """
+ David Fraser: Extract a method to represent keys in mappings, so that
+ a subclass can choose not to quote them (for example)
+ used in represent_mapping
+ https://bitbucket.org/davidfraser/pyyaml/commits/d81df6eb95f20cac4a79eed95ae553b5c6f77b8c
+ """
+ return self.represent_data(data)
+
+ @classmethod
+ def add_representer(cls, data_type, representer):
+ # type: (Any, Any) -> None
+ if 'yaml_representers' not in cls.__dict__:
+ cls.yaml_representers = cls.yaml_representers.copy()
+ cls.yaml_representers[data_type] = representer
+
+ @classmethod
+ def add_multi_representer(cls, data_type, representer):
+ # type: (Any, Any) -> None
+ if 'yaml_multi_representers' not in cls.__dict__:
+ cls.yaml_multi_representers = cls.yaml_multi_representers.copy()
+ cls.yaml_multi_representers[data_type] = representer
+
+ def represent_scalar(self, tag, value, style=None, anchor=None):
+ # type: (Any, Any, Any, Any) -> Any
+ if style is None:
+ style = self.default_style
+ comment = None
+ if style and style[0] in '|>':
+ comment = getattr(value, 'comment', None)
+ if comment:
+ comment = [None, [comment]]
+ node = ScalarNode(tag, value, style=style, comment=comment, anchor=anchor)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ return node
+
+ def represent_sequence(self, tag, sequence, flow_style=None):
+ # type: (Any, Any, Any) -> Any
+ value = [] # type: List[Any]
+ node = SequenceNode(tag, value, flow_style=flow_style)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ for item in sequence:
+ node_item = self.represent_data(item)
+ if not (isinstance(node_item, ScalarNode) and not node_item.style):
+ best_style = False
+ value.append(node_item)
+ if flow_style is None:
+ if self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ return node
+
+ def represent_omap(self, tag, omap, flow_style=None):
+ # type: (Any, Any, Any) -> Any
+ value = [] # type: List[Any]
+ node = SequenceNode(tag, value, flow_style=flow_style)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ for item_key in omap:
+ item_val = omap[item_key]
+ node_item = self.represent_data({item_key: item_val})
+ # if not (isinstance(node_item, ScalarNode) \
+ # and not node_item.style):
+ # best_style = False
+ value.append(node_item)
+ if flow_style is None:
+ if self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ return node
+
+ def represent_mapping(self, tag, mapping, flow_style=None):
+ # type: (Any, Any, Any) -> Any
+ value = [] # type: List[Any]
+ node = MappingNode(tag, value, flow_style=flow_style)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ if hasattr(mapping, 'items'):
+ mapping = list(mapping.items())
+ if self.sort_base_mapping_type_on_output:
+ try:
+ mapping = sorted(mapping)
+ except TypeError:
+ pass
+ for item_key, item_value in mapping:
+ node_key = self.represent_key(item_key)
+ node_value = self.represent_data(item_value)
+ if not (isinstance(node_key, ScalarNode) and not node_key.style):
+ best_style = False
+ if not (isinstance(node_value, ScalarNode) and not node_value.style):
+ best_style = False
+ value.append((node_key, node_value))
+ if flow_style is None:
+ if self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ return node
+
+ def ignore_aliases(self, data):
+ # type: (Any) -> bool
+ return False
+
+
+class SafeRepresenter(BaseRepresenter):
+ def ignore_aliases(self, data):
+ # type: (Any) -> bool
+ # https://docs.python.org/3/reference/expressions.html#parenthesized-forms :
+ # "i.e. two occurrences of the empty tuple may or may not yield the same object"
+ # so "data is ()" should not be used
+ if data is None or (isinstance(data, tuple) and data == ()):
+ return True
+ if isinstance(data, (binary_type, text_type, bool, int, float)):
+ return True
+ return False
+
+ def represent_none(self, data):
+ # type: (Any) -> Any
+ return self.represent_scalar(u'tag:yaml.org,2002:null', u'null')
+
+ if PY3:
+
+ def represent_str(self, data):
+ # type: (Any) -> Any
+ return self.represent_scalar(u'tag:yaml.org,2002:str', data)
+
+ def represent_binary(self, data):
+ # type: (Any) -> Any
+ if hasattr(base64, 'encodebytes'):
+ data = base64.encodebytes(data).decode('ascii')
+ else:
+ data = base64.encodestring(data).decode('ascii')
+ return self.represent_scalar(u'tag:yaml.org,2002:binary', data, style='|')
+
+ else:
+
+ def represent_str(self, data):
+ # type: (Any) -> Any
+ tag = None
+ style = None
+ try:
+ data = unicode(data, 'ascii')
+ tag = u'tag:yaml.org,2002:str'
+ except UnicodeDecodeError:
+ try:
+ data = unicode(data, 'utf-8')
+ tag = u'tag:yaml.org,2002:str'
+ except UnicodeDecodeError:
+ data = data.encode('base64')
+ tag = u'tag:yaml.org,2002:binary'
+ style = '|'
+ return self.represent_scalar(tag, data, style=style)
+
+ def represent_unicode(self, data):
+ # type: (Any) -> Any
+ return self.represent_scalar(u'tag:yaml.org,2002:str', data)
+
+ def represent_bool(self, data, anchor=None):
+ # type: (Any, Optional[Any]) -> Any
+ try:
+ value = self.dumper.boolean_representation[bool(data)]
+ except AttributeError:
+ if data:
+ value = u'true'
+ else:
+ value = u'false'
+ return self.represent_scalar(u'tag:yaml.org,2002:bool', value, anchor=anchor)
+
+ def represent_int(self, data):
+ # type: (Any) -> Any
+ return self.represent_scalar(u'tag:yaml.org,2002:int', text_type(data))
+
+ if PY2:
+
+ def represent_long(self, data):
+ # type: (Any) -> Any
+ return self.represent_scalar(u'tag:yaml.org,2002:int', text_type(data))
+
+ inf_value = 1e300
+ while repr(inf_value) != repr(inf_value * inf_value):
+ inf_value *= inf_value
+
+ def represent_float(self, data):
+ # type: (Any) -> Any
+ if data != data or (data == 0.0 and data == 1.0):
+ value = u'.nan'
+ elif data == self.inf_value:
+ value = u'.inf'
+ elif data == -self.inf_value:
+ value = u'-.inf'
+ else:
+ value = to_unicode(repr(data)).lower()
+ if getattr(self.serializer, 'use_version', None) == (1, 1):
+ if u'.' not in value and u'e' in value:
+ # Note that in some cases `repr(data)` represents a float number
+ # without the decimal parts. For instance:
+ # >>> repr(1e17)
+ # '1e17'
+ # Unfortunately, this is not a valid float representation according
+ # to the definition of the `!!float` tag in YAML 1.1. We fix
+ # this by adding '.0' before the 'e' symbol.
+ value = value.replace(u'e', u'.0e', 1)
+ return self.represent_scalar(u'tag:yaml.org,2002:float', value)
+
+ def represent_list(self, data):
+ # type: (Any) -> Any
+ # pairs = (len(data) > 0 and isinstance(data, list))
+ # if pairs:
+ # for item in data:
+ # if not isinstance(item, tuple) or len(item) != 2:
+ # pairs = False
+ # break
+ # if not pairs:
+ return self.represent_sequence(u'tag:yaml.org,2002:seq', data)
+
+ # value = []
+ # for item_key, item_value in data:
+ # value.append(self.represent_mapping(u'tag:yaml.org,2002:map',
+ # [(item_key, item_value)]))
+ # return SequenceNode(u'tag:yaml.org,2002:pairs', value)
+
+ def represent_dict(self, data):
+ # type: (Any) -> Any
+ return self.represent_mapping(u'tag:yaml.org,2002:map', data)
+
+ def represent_ordereddict(self, data):
+ # type: (Any) -> Any
+ return self.represent_omap(u'tag:yaml.org,2002:omap', data)
+
+ def represent_set(self, data):
+ # type: (Any) -> Any
+ value = {} # type: Dict[Any, None]
+ for key in data:
+ value[key] = None
+ return self.represent_mapping(u'tag:yaml.org,2002:set', value)
+
+ def represent_date(self, data):
+ # type: (Any) -> Any
+ value = to_unicode(data.isoformat())
+ return self.represent_scalar(u'tag:yaml.org,2002:timestamp', value)
+
+ def represent_datetime(self, data):
+ # type: (Any) -> Any
+ value = to_unicode(data.isoformat(' '))
+ return self.represent_scalar(u'tag:yaml.org,2002:timestamp', value)
+
+ def represent_yaml_object(self, tag, data, cls, flow_style=None):
+ # type: (Any, Any, Any, Any) -> Any
+ if hasattr(data, '__getstate__'):
+ state = data.__getstate__()
+ else:
+ state = data.__dict__.copy()
+ return self.represent_mapping(tag, state, flow_style=flow_style)
+
+ def represent_undefined(self, data):
+ # type: (Any) -> None
+ raise RepresenterError('cannot represent an object: %s' % (data,))
+
+
+SafeRepresenter.add_representer(type(None), SafeRepresenter.represent_none)
+
+SafeRepresenter.add_representer(str, SafeRepresenter.represent_str)
+
+if PY2:
+ SafeRepresenter.add_representer(unicode, SafeRepresenter.represent_unicode)
+else:
+ SafeRepresenter.add_representer(bytes, SafeRepresenter.represent_binary)
+
+SafeRepresenter.add_representer(bool, SafeRepresenter.represent_bool)
+
+SafeRepresenter.add_representer(int, SafeRepresenter.represent_int)
+
+if PY2:
+ SafeRepresenter.add_representer(long, SafeRepresenter.represent_long)
+
+SafeRepresenter.add_representer(float, SafeRepresenter.represent_float)
+
+SafeRepresenter.add_representer(list, SafeRepresenter.represent_list)
+
+SafeRepresenter.add_representer(tuple, SafeRepresenter.represent_list)
+
+SafeRepresenter.add_representer(dict, SafeRepresenter.represent_dict)
+
+SafeRepresenter.add_representer(set, SafeRepresenter.represent_set)
+
+SafeRepresenter.add_representer(ordereddict, SafeRepresenter.represent_ordereddict)
+
+if sys.version_info >= (2, 7):
+ import collections
+
+ SafeRepresenter.add_representer(
+ collections.OrderedDict, SafeRepresenter.represent_ordereddict
+ )
+
+SafeRepresenter.add_representer(datetime.date, SafeRepresenter.represent_date)
+
+SafeRepresenter.add_representer(datetime.datetime, SafeRepresenter.represent_datetime)
+
+SafeRepresenter.add_representer(None, SafeRepresenter.represent_undefined)
+
+
+class Representer(SafeRepresenter):
+ if PY2:
+
+ def represent_str(self, data):
+ # type: (Any) -> Any
+ tag = None
+ style = None
+ try:
+ data = unicode(data, 'ascii')
+ tag = u'tag:yaml.org,2002:str'
+ except UnicodeDecodeError:
+ try:
+ data = unicode(data, 'utf-8')
+ tag = u'tag:yaml.org,2002:python/str'
+ except UnicodeDecodeError:
+ data = data.encode('base64')
+ tag = u'tag:yaml.org,2002:binary'
+ style = '|'
+ return self.represent_scalar(tag, data, style=style)
+
+ def represent_unicode(self, data):
+ # type: (Any) -> Any
+ tag = None
+ try:
+ data.encode('ascii')
+ tag = u'tag:yaml.org,2002:python/unicode'
+ except UnicodeEncodeError:
+ tag = u'tag:yaml.org,2002:str'
+ return self.represent_scalar(tag, data)
+
+ def represent_long(self, data):
+ # type: (Any) -> Any
+ tag = u'tag:yaml.org,2002:int'
+ if int(data) is not data:
+ tag = u'tag:yaml.org,2002:python/long'
+ return self.represent_scalar(tag, to_unicode(data))
+
+ def represent_complex(self, data):
+ # type: (Any) -> Any
+ if data.imag == 0.0:
+ data = u'%r' % data.real
+ elif data.real == 0.0:
+ data = u'%rj' % data.imag
+ elif data.imag > 0:
+ data = u'%r+%rj' % (data.real, data.imag)
+ else:
+ data = u'%r%rj' % (data.real, data.imag)
+ return self.represent_scalar(u'tag:yaml.org,2002:python/complex', data)
+
+ def represent_tuple(self, data):
+ # type: (Any) -> Any
+ return self.represent_sequence(u'tag:yaml.org,2002:python/tuple', data)
+
+ def represent_name(self, data):
+ # type: (Any) -> Any
+ try:
+ name = u'%s.%s' % (data.__module__, data.__qualname__)
+ except AttributeError:
+ # probably PY2
+ name = u'%s.%s' % (data.__module__, data.__name__)
+ return self.represent_scalar(u'tag:yaml.org,2002:python/name:' + name, "")
+
+ def represent_module(self, data):
+ # type: (Any) -> Any
+ return self.represent_scalar(u'tag:yaml.org,2002:python/module:' + data.__name__, "")
+
+ if PY2:
+
+ def represent_instance(self, data):
+ # type: (Any) -> Any
+ # For instances of classic classes, we use __getinitargs__ and
+ # __getstate__ to serialize the data.
+
+ # If data.__getinitargs__ exists, the object must be reconstructed
+ # by calling cls(**args), where args is a tuple returned by
+ # __getinitargs__. Otherwise, the cls.__init__ method should never
+ # be called and the class instance is created by instantiating a
+ # trivial class and assigning to the instance's __class__ variable.
+
+ # If data.__getstate__ exists, it returns the state of the object.
+ # Otherwise, the state of the object is data.__dict__.
+
+ # We produce either a !!python/object or !!python/object/new node.
+ # If data.__getinitargs__ does not exist and state is a dictionary,
+ # we produce a !!python/object node . Otherwise we produce a
+ # !!python/object/new node.
+
+ cls = data.__class__
+ class_name = u'%s.%s' % (cls.__module__, cls.__name__)
+ args = None
+ state = None
+ if hasattr(data, '__getinitargs__'):
+ args = list(data.__getinitargs__())
+ if hasattr(data, '__getstate__'):
+ state = data.__getstate__()
+ else:
+ state = data.__dict__
+ if args is None and isinstance(state, dict):
+ return self.represent_mapping(
+ u'tag:yaml.org,2002:python/object:' + class_name, state
+ )
+ if isinstance(state, dict) and not state:
+ return self.represent_sequence(
+ u'tag:yaml.org,2002:python/object/new:' + class_name, args
+ )
+ value = {}
+ if bool(args):
+ value['args'] = args
+ value['state'] = state # type: ignore
+ return self.represent_mapping(
+ u'tag:yaml.org,2002:python/object/new:' + class_name, value
+ )
+
+ def represent_object(self, data):
+ # type: (Any) -> Any
+ # We use __reduce__ API to save the data. data.__reduce__ returns
+ # a tuple of length 2-5:
+ # (function, args, state, listitems, dictitems)
+
+ # For reconstructing, we calls function(*args), then set its state,
+ # listitems, and dictitems if they are not None.
+
+ # A special case is when function.__name__ == '__newobj__'. In this
+ # case we create the object with args[0].__new__(*args).
+
+ # Another special case is when __reduce__ returns a string - we don't
+ # support it.
+
+ # We produce a !!python/object, !!python/object/new or
+ # !!python/object/apply node.
+
+ cls = type(data)
+ if cls in copyreg.dispatch_table:
+ reduce = copyreg.dispatch_table[cls](data)
+ elif hasattr(data, '__reduce_ex__'):
+ reduce = data.__reduce_ex__(2)
+ elif hasattr(data, '__reduce__'):
+ reduce = data.__reduce__()
+ else:
+ raise RepresenterError('cannot represent object: %r' % (data,))
+ reduce = (list(reduce) + [None] * 5)[:5]
+ function, args, state, listitems, dictitems = reduce
+ args = list(args)
+ if state is None:
+ state = {}
+ if listitems is not None:
+ listitems = list(listitems)
+ if dictitems is not None:
+ dictitems = dict(dictitems)
+ if function.__name__ == '__newobj__':
+ function = args[0]
+ args = args[1:]
+ tag = u'tag:yaml.org,2002:python/object/new:'
+ newobj = True
+ else:
+ tag = u'tag:yaml.org,2002:python/object/apply:'
+ newobj = False
+ try:
+ function_name = u'%s.%s' % (function.__module__, function.__qualname__)
+ except AttributeError:
+ # probably PY2
+ function_name = u'%s.%s' % (function.__module__, function.__name__)
+ if not args and not listitems and not dictitems and isinstance(state, dict) and newobj:
+ return self.represent_mapping(
+ u'tag:yaml.org,2002:python/object:' + function_name, state
+ )
+ if not listitems and not dictitems and isinstance(state, dict) and not state:
+ return self.represent_sequence(tag + function_name, args)
+ value = {}
+ if args:
+ value['args'] = args
+ if state or not isinstance(state, dict):
+ value['state'] = state
+ if listitems:
+ value['listitems'] = listitems
+ if dictitems:
+ value['dictitems'] = dictitems
+ return self.represent_mapping(tag + function_name, value)
+
+
+if PY2:
+ Representer.add_representer(str, Representer.represent_str)
+
+ Representer.add_representer(unicode, Representer.represent_unicode)
+
+ Representer.add_representer(long, Representer.represent_long)
+
+Representer.add_representer(complex, Representer.represent_complex)
+
+Representer.add_representer(tuple, Representer.represent_tuple)
+
+Representer.add_representer(type, Representer.represent_name)
+
+if PY2:
+ Representer.add_representer(types.ClassType, Representer.represent_name)
+
+Representer.add_representer(types.FunctionType, Representer.represent_name)
+
+Representer.add_representer(types.BuiltinFunctionType, Representer.represent_name)
+
+Representer.add_representer(types.ModuleType, Representer.represent_module)
+
+if PY2:
+ Representer.add_multi_representer(types.InstanceType, Representer.represent_instance)
+
+Representer.add_multi_representer(object, Representer.represent_object)
+
+Representer.add_multi_representer(type, Representer.represent_name)
+
+from .comments import (
+ CommentedMap,
+ CommentedOrderedMap,
+ CommentedSeq,
+ CommentedKeySeq,
+ CommentedKeyMap,
+ CommentedSet,
+ comment_attrib,
+ merge_attrib,
+ TaggedScalar,
+) # NOQA
+
+
+class RoundTripRepresenter(SafeRepresenter):
+ # need to add type here and write out the .comment
+ # in serializer and emitter
+
+ def __init__(self, default_style=None, default_flow_style=None, dumper=None):
+ # type: (Any, Any, Any) -> None
+ if not hasattr(dumper, 'typ') and default_flow_style is None:
+ default_flow_style = False
+ SafeRepresenter.__init__(
+ self,
+ default_style=default_style,
+ default_flow_style=default_flow_style,
+ dumper=dumper,
+ )
+
+ def ignore_aliases(self, data):
+ # type: (Any) -> bool
+ try:
+ if data.anchor is not None and data.anchor.value is not None:
+ return False
+ except AttributeError:
+ pass
+ return SafeRepresenter.ignore_aliases(self, data)
+
+ def represent_none(self, data):
+ # type: (Any) -> Any
+ if len(self.represented_objects) == 0 and not self.serializer.use_explicit_start:
+ # this will be open ended (although it is not yet)
+ return self.represent_scalar(u'tag:yaml.org,2002:null', u'null')
+ return self.represent_scalar(u'tag:yaml.org,2002:null', "")
+
+ def represent_literal_scalarstring(self, data):
+ # type: (Any) -> Any
+ tag = None
+ style = '|'
+ anchor = data.yaml_anchor(any=True)
+ if PY2 and not isinstance(data, unicode):
+ data = unicode(data, 'ascii')
+ tag = u'tag:yaml.org,2002:str'
+ return self.represent_scalar(tag, data, style=style, anchor=anchor)
+
+ represent_preserved_scalarstring = represent_literal_scalarstring
+
+ def represent_folded_scalarstring(self, data):
+ # type: (Any) -> Any
+ tag = None
+ style = '>'
+ anchor = data.yaml_anchor(any=True)
+ for fold_pos in reversed(getattr(data, 'fold_pos', [])):
+ if (
+ data[fold_pos] == ' '
+ and (fold_pos > 0 and not data[fold_pos - 1].isspace())
+ and (fold_pos < len(data) and not data[fold_pos + 1].isspace())
+ ):
+ data = data[:fold_pos] + '\a' + data[fold_pos:]
+ if PY2 and not isinstance(data, unicode):
+ data = unicode(data, 'ascii')
+ tag = u'tag:yaml.org,2002:str'
+ return self.represent_scalar(tag, data, style=style, anchor=anchor)
+
+ def represent_single_quoted_scalarstring(self, data):
+ # type: (Any) -> Any
+ tag = None
+ style = "'"
+ anchor = data.yaml_anchor(any=True)
+ if PY2 and not isinstance(data, unicode):
+ data = unicode(data, 'ascii')
+ tag = u'tag:yaml.org,2002:str'
+ return self.represent_scalar(tag, data, style=style, anchor=anchor)
+
+ def represent_double_quoted_scalarstring(self, data):
+ # type: (Any) -> Any
+ tag = None
+ style = '"'
+ anchor = data.yaml_anchor(any=True)
+ if PY2 and not isinstance(data, unicode):
+ data = unicode(data, 'ascii')
+ tag = u'tag:yaml.org,2002:str'
+ return self.represent_scalar(tag, data, style=style, anchor=anchor)
+
+ def represent_plain_scalarstring(self, data):
+ # type: (Any) -> Any
+ tag = None
+ style = ''
+ anchor = data.yaml_anchor(any=True)
+ if PY2 and not isinstance(data, unicode):
+ data = unicode(data, 'ascii')
+ tag = u'tag:yaml.org,2002:str'
+ return self.represent_scalar(tag, data, style=style, anchor=anchor)
+
+ def insert_underscore(self, prefix, s, underscore, anchor=None):
+ # type: (Any, Any, Any, Any) -> Any
+ if underscore is None:
+ return self.represent_scalar(u'tag:yaml.org,2002:int', prefix + s, anchor=anchor)
+ if underscore[0]:
+ sl = list(s)
+ pos = len(s) - underscore[0]
+ while pos > 0:
+ sl.insert(pos, '_')
+ pos -= underscore[0]
+ s = "".join(sl)
+ if underscore[1]:
+ s = '_' + s
+ if underscore[2]:
+ s += '_'
+ return self.represent_scalar(u'tag:yaml.org,2002:int', prefix + s, anchor=anchor)
+
+ def represent_scalar_int(self, data):
+ # type: (Any) -> Any
+ if data._width is not None:
+ s = '{:0{}d}'.format(data, data._width)
+ else:
+ s = format(data, 'd')
+ anchor = data.yaml_anchor(any=True)
+ return self.insert_underscore("", s, data._underscore, anchor=anchor)
+
+ def represent_binary_int(self, data):
+ # type: (Any) -> Any
+ if data._width is not None:
+ # cannot use '{:#0{}b}', that strips the zeros
+ s = '{:0{}b}'.format(data, data._width)
+ else:
+ s = format(data, 'b')
+ anchor = data.yaml_anchor(any=True)
+ return self.insert_underscore('0b', s, data._underscore, anchor=anchor)
+
+ def represent_octal_int(self, data):
+ # type: (Any) -> Any
+ if data._width is not None:
+ # cannot use '{:#0{}o}', that strips the zeros
+ s = '{:0{}o}'.format(data, data._width)
+ else:
+ s = format(data, 'o')
+ anchor = data.yaml_anchor(any=True)
+ return self.insert_underscore('0o', s, data._underscore, anchor=anchor)
+
+ def represent_hex_int(self, data):
+ # type: (Any) -> Any
+ if data._width is not None:
+ # cannot use '{:#0{}x}', that strips the zeros
+ s = '{:0{}x}'.format(data, data._width)
+ else:
+ s = format(data, 'x')
+ anchor = data.yaml_anchor(any=True)
+ return self.insert_underscore('0x', s, data._underscore, anchor=anchor)
+
+ def represent_hex_caps_int(self, data):
+ # type: (Any) -> Any
+ if data._width is not None:
+ # cannot use '{:#0{}X}', that strips the zeros
+ s = '{:0{}X}'.format(data, data._width)
+ else:
+ s = format(data, 'X')
+ anchor = data.yaml_anchor(any=True)
+ return self.insert_underscore('0x', s, data._underscore, anchor=anchor)
+
+ def represent_scalar_float(self, data):
+ # type: (Any) -> Any
+ """ this is way more complicated """
+ value = None
+ anchor = data.yaml_anchor(any=True)
+ if data != data or (data == 0.0 and data == 1.0):
+ value = u'.nan'
+ elif data == self.inf_value:
+ value = u'.inf'
+ elif data == -self.inf_value:
+ value = u'-.inf'
+ if value:
+ return self.represent_scalar(u'tag:yaml.org,2002:float', value, anchor=anchor)
+ if data._exp is None and data._prec > 0 and data._prec == data._width - 1:
+ # no exponent, but trailing dot
+ value = u'{}{:d}.'.format(data._m_sign if data._m_sign else "", abs(int(data)))
+ elif data._exp is None:
+ # no exponent, "normal" dot
+ prec = data._prec
+ ms = data._m_sign if data._m_sign else ""
+ # -1 for the dot
+ value = u'{}{:0{}.{}f}'.format(
+ ms, abs(data), data._width - len(ms), data._width - prec - 1
+ )
+ if prec == 0 or (prec == 1 and ms != ""):
+ value = value.replace(u'0.', u'.')
+ while len(value) < data._width:
+ value += u'0'
+ else:
+ # exponent
+ m, es = u'{:{}.{}e}'.format(
+ # data, data._width, data._width - data._prec + (1 if data._m_sign else 0)
+ data,
+ data._width,
+ data._width + (1 if data._m_sign else 0),
+ ).split('e')
+ w = data._width if data._prec > 0 else (data._width + 1)
+ if data < 0:
+ w += 1
+ m = m[:w]
+ e = int(es)
+ m1, m2 = m.split('.') # always second?
+ while len(m1) + len(m2) < data._width - (1 if data._prec >= 0 else 0):
+ m2 += u'0'
+ if data._m_sign and data > 0:
+ m1 = '+' + m1
+ esgn = u'+' if data._e_sign else ""
+ if data._prec < 0: # mantissa without dot
+ if m2 != u'0':
+ e -= len(m2)
+ else:
+ m2 = ""
+ while (len(m1) + len(m2) - (1 if data._m_sign else 0)) < data._width:
+ m2 += u'0'
+ e -= 1
+ value = m1 + m2 + data._exp + u'{:{}0{}d}'.format(e, esgn, data._e_width)
+ elif data._prec == 0: # mantissa with trailing dot
+ e -= len(m2)
+ value = (
+ m1 + m2 + u'.' + data._exp + u'{:{}0{}d}'.format(e, esgn, data._e_width)
+ )
+ else:
+ if data._m_lead0 > 0:
+ m2 = u'0' * (data._m_lead0 - 1) + m1 + m2
+ m1 = u'0'
+ m2 = m2[: -data._m_lead0] # these should be zeros
+ e += data._m_lead0
+ while len(m1) < data._prec:
+ m1 += m2[0]
+ m2 = m2[1:]
+ e -= 1
+ value = (
+ m1 + u'.' + m2 + data._exp + u'{:{}0{}d}'.format(e, esgn, data._e_width)
+ )
+
+ if value is None:
+ value = to_unicode(repr(data)).lower()
+ return self.represent_scalar(u'tag:yaml.org,2002:float', value, anchor=anchor)
+
+ def represent_sequence(self, tag, sequence, flow_style=None):
+ # type: (Any, Any, Any) -> Any
+ value = [] # type: List[Any]
+ # if the flow_style is None, the flow style tacked on to the object
+ # explicitly will be taken. If that is None as well the default flow
+ # style rules
+ try:
+ flow_style = sequence.fa.flow_style(flow_style)
+ except AttributeError:
+ flow_style = flow_style
+ try:
+ anchor = sequence.yaml_anchor()
+ except AttributeError:
+ anchor = None
+ node = SequenceNode(tag, value, flow_style=flow_style, anchor=anchor)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ try:
+ comment = getattr(sequence, comment_attrib)
+ node.comment = comment.comment
+ # reset any comment already printed information
+ if node.comment and node.comment[1]:
+ for ct in node.comment[1]:
+ ct.reset()
+ item_comments = comment.items
+ for v in item_comments.values():
+ if v and v[1]:
+ for ct in v[1]:
+ ct.reset()
+ item_comments = comment.items
+ node.comment = comment.comment
+ try:
+ node.comment.append(comment.end)
+ except AttributeError:
+ pass
+ except AttributeError:
+ item_comments = {}
+ for idx, item in enumerate(sequence):
+ node_item = self.represent_data(item)
+ self.merge_comments(node_item, item_comments.get(idx))
+ if not (isinstance(node_item, ScalarNode) and not node_item.style):
+ best_style = False
+ value.append(node_item)
+ if flow_style is None:
+ if len(sequence) != 0 and self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ return node
+
+ def merge_comments(self, node, comments):
+ # type: (Any, Any) -> Any
+ if comments is None:
+ assert hasattr(node, 'comment')
+ return node
+ if getattr(node, 'comment', None) is not None:
+ for idx, val in enumerate(comments):
+ if idx >= len(node.comment):
+ continue
+ nc = node.comment[idx]
+ if nc is not None:
+ assert val is None or val == nc
+ comments[idx] = nc
+ node.comment = comments
+ return node
+
+ def represent_key(self, data):
+ # type: (Any) -> Any
+ if isinstance(data, CommentedKeySeq):
+ self.alias_key = None
+ return self.represent_sequence(u'tag:yaml.org,2002:seq', data, flow_style=True)
+ if isinstance(data, CommentedKeyMap):
+ self.alias_key = None
+ return self.represent_mapping(u'tag:yaml.org,2002:map', data, flow_style=True)
+ return SafeRepresenter.represent_key(self, data)
+
+ def represent_mapping(self, tag, mapping, flow_style=None):
+ # type: (Any, Any, Any) -> Any
+ value = [] # type: List[Any]
+ try:
+ flow_style = mapping.fa.flow_style(flow_style)
+ except AttributeError:
+ flow_style = flow_style
+ try:
+ anchor = mapping.yaml_anchor()
+ except AttributeError:
+ anchor = None
+ node = MappingNode(tag, value, flow_style=flow_style, anchor=anchor)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ # no sorting! !!
+ try:
+ comment = getattr(mapping, comment_attrib)
+ node.comment = comment.comment
+ if node.comment and node.comment[1]:
+ for ct in node.comment[1]:
+ ct.reset()
+ item_comments = comment.items
+ for v in item_comments.values():
+ if v and v[1]:
+ for ct in v[1]:
+ ct.reset()
+ try:
+ node.comment.append(comment.end)
+ except AttributeError:
+ pass
+ except AttributeError:
+ item_comments = {}
+ merge_list = [m[1] for m in getattr(mapping, merge_attrib, [])]
+ try:
+ merge_pos = getattr(mapping, merge_attrib, [[0]])[0][0]
+ except IndexError:
+ merge_pos = 0
+ item_count = 0
+ if bool(merge_list):
+ items = mapping.non_merged_items()
+ else:
+ items = mapping.items()
+ for item_key, item_value in items:
+ item_count += 1
+ node_key = self.represent_key(item_key)
+ node_value = self.represent_data(item_value)
+ item_comment = item_comments.get(item_key)
+ if item_comment:
+ assert getattr(node_key, 'comment', None) is None
+ node_key.comment = item_comment[:2]
+ nvc = getattr(node_value, 'comment', None)
+ if nvc is not None: # end comment already there
+ nvc[0] = item_comment[2]
+ nvc[1] = item_comment[3]
+ else:
+ node_value.comment = item_comment[2:]
+ if not (isinstance(node_key, ScalarNode) and not node_key.style):
+ best_style = False
+ if not (isinstance(node_value, ScalarNode) and not node_value.style):
+ best_style = False
+ value.append((node_key, node_value))
+ if flow_style is None:
+ if ((item_count != 0) or bool(merge_list)) and self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ if bool(merge_list):
+ # because of the call to represent_data here, the anchors
+ # are marked as being used and thereby created
+ if len(merge_list) == 1:
+ arg = self.represent_data(merge_list[0])
+ else:
+ arg = self.represent_data(merge_list)
+ arg.flow_style = True
+ value.insert(merge_pos, (ScalarNode(u'tag:yaml.org,2002:merge', '<<'), arg))
+ return node
+
+ def represent_omap(self, tag, omap, flow_style=None):
+ # type: (Any, Any, Any) -> Any
+ value = [] # type: List[Any]
+ try:
+ flow_style = omap.fa.flow_style(flow_style)
+ except AttributeError:
+ flow_style = flow_style
+ try:
+ anchor = omap.yaml_anchor()
+ except AttributeError:
+ anchor = None
+ node = SequenceNode(tag, value, flow_style=flow_style, anchor=anchor)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ try:
+ comment = getattr(omap, comment_attrib)
+ node.comment = comment.comment
+ if node.comment and node.comment[1]:
+ for ct in node.comment[1]:
+ ct.reset()
+ item_comments = comment.items
+ for v in item_comments.values():
+ if v and v[1]:
+ for ct in v[1]:
+ ct.reset()
+ try:
+ node.comment.append(comment.end)
+ except AttributeError:
+ pass
+ except AttributeError:
+ item_comments = {}
+ for item_key in omap:
+ item_val = omap[item_key]
+ node_item = self.represent_data({item_key: item_val})
+ # node_item.flow_style = False
+ # node item has two scalars in value: node_key and node_value
+ item_comment = item_comments.get(item_key)
+ if item_comment:
+ if item_comment[1]:
+ node_item.comment = [None, item_comment[1]]
+ assert getattr(node_item.value[0][0], 'comment', None) is None
+ node_item.value[0][0].comment = [item_comment[0], None]
+ nvc = getattr(node_item.value[0][1], 'comment', None)
+ if nvc is not None: # end comment already there
+ nvc[0] = item_comment[2]
+ nvc[1] = item_comment[3]
+ else:
+ node_item.value[0][1].comment = item_comment[2:]
+ # if not (isinstance(node_item, ScalarNode) \
+ # and not node_item.style):
+ # best_style = False
+ value.append(node_item)
+ if flow_style is None:
+ if self.default_flow_style is not None:
+ node.flow_style = self.default_flow_style
+ else:
+ node.flow_style = best_style
+ return node
+
+ def represent_set(self, setting):
+ # type: (Any) -> Any
+ flow_style = False
+ tag = u'tag:yaml.org,2002:set'
+ # return self.represent_mapping(tag, value)
+ value = [] # type: List[Any]
+ flow_style = setting.fa.flow_style(flow_style)
+ try:
+ anchor = setting.yaml_anchor()
+ except AttributeError:
+ anchor = None
+ node = MappingNode(tag, value, flow_style=flow_style, anchor=anchor)
+ if self.alias_key is not None:
+ self.represented_objects[self.alias_key] = node
+ best_style = True
+ # no sorting! !!
+ try:
+ comment = getattr(setting, comment_attrib)
+ node.comment = comment.comment
+ if node.comment and node.comment[1]:
+ for ct in node.comment[1]:
+ ct.reset()
+ item_comments = comment.items
+ for v in item_comments.values():
+ if v and v[1]:
+ for ct in v[1]:
+ ct.reset()
+ try:
+ node.comment.append(comment.end)
+ except AttributeError:
+ pass
+ except AttributeError:
+ item_comments = {}
+ for item_key in setting.odict:
+ node_key = self.represent_key(item_key)
+ node_value = self.represent_data(None)
+ item_comment = item_comments.get(item_key)
+ if item_comment:
+ assert getattr(node_key, 'comment', None) is None
+ node_key.comment = item_comment[:2]
+ node_key.style = node_value.style = '?'
+ if not (isinstance(node_key, ScalarNode) and not node_key.style):
+ best_style = False
+ if not (isinstance(node_value, ScalarNode) and not node_value.style):
+ best_style = False
+ value.append((node_key, node_value))
+ best_style = best_style
+ return node
+
+ def represent_dict(self, data):
+ # type: (Any) -> Any
+ """write out tag if saved on loading"""
+ try:
+ t = data.tag.value
+ except AttributeError:
+ t = None
+ if t:
+ if t.startswith('!!'):
+ tag = 'tag:yaml.org,2002:' + t[2:]
+ else:
+ tag = t
+ else:
+ tag = u'tag:yaml.org,2002:map'
+ return self.represent_mapping(tag, data)
+
+ def represent_list(self, data):
+ # type: (Any) -> Any
+ try:
+ t = data.tag.value
+ except AttributeError:
+ t = None
+ if t:
+ if t.startswith('!!'):
+ tag = 'tag:yaml.org,2002:' + t[2:]
+ else:
+ tag = t
+ else:
+ tag = u'tag:yaml.org,2002:seq'
+ return self.represent_sequence(tag, data)
+
+ def represent_datetime(self, data):
+ # type: (Any) -> Any
+ inter = 'T' if data._yaml['t'] else ' '
+ _yaml = data._yaml
+ if _yaml['delta']:
+ data += _yaml['delta']
+ value = data.isoformat(inter)
+ else:
+ value = data.isoformat(inter)
+ if _yaml['tz']:
+ value += _yaml['tz']
+ return self.represent_scalar(u'tag:yaml.org,2002:timestamp', to_unicode(value))
+
+ def represent_tagged_scalar(self, data):
+ # type: (Any) -> Any
+ try:
+ tag = data.tag.value
+ except AttributeError:
+ tag = None
+ try:
+ anchor = data.yaml_anchor()
+ except AttributeError:
+ anchor = None
+ return self.represent_scalar(tag, data.value, style=data.style, anchor=anchor)
+
+ def represent_scalar_bool(self, data):
+ # type: (Any) -> Any
+ try:
+ anchor = data.yaml_anchor()
+ except AttributeError:
+ anchor = None
+ return SafeRepresenter.represent_bool(self, data, anchor=anchor)
+
+
+RoundTripRepresenter.add_representer(type(None), RoundTripRepresenter.represent_none)
+
+RoundTripRepresenter.add_representer(
+ LiteralScalarString, RoundTripRepresenter.represent_literal_scalarstring
+)
+
+RoundTripRepresenter.add_representer(
+ FoldedScalarString, RoundTripRepresenter.represent_folded_scalarstring
+)
+
+RoundTripRepresenter.add_representer(
+ SingleQuotedScalarString, RoundTripRepresenter.represent_single_quoted_scalarstring
+)
+
+RoundTripRepresenter.add_representer(
+ DoubleQuotedScalarString, RoundTripRepresenter.represent_double_quoted_scalarstring
+)
+
+RoundTripRepresenter.add_representer(
+ PlainScalarString, RoundTripRepresenter.represent_plain_scalarstring
+)
+
+# RoundTripRepresenter.add_representer(tuple, Representer.represent_tuple)
+
+RoundTripRepresenter.add_representer(ScalarInt, RoundTripRepresenter.represent_scalar_int)
+
+RoundTripRepresenter.add_representer(BinaryInt, RoundTripRepresenter.represent_binary_int)
+
+RoundTripRepresenter.add_representer(OctalInt, RoundTripRepresenter.represent_octal_int)
+
+RoundTripRepresenter.add_representer(HexInt, RoundTripRepresenter.represent_hex_int)
+
+RoundTripRepresenter.add_representer(HexCapsInt, RoundTripRepresenter.represent_hex_caps_int)
+
+RoundTripRepresenter.add_representer(ScalarFloat, RoundTripRepresenter.represent_scalar_float)
+
+RoundTripRepresenter.add_representer(ScalarBoolean, RoundTripRepresenter.represent_scalar_bool)
+
+RoundTripRepresenter.add_representer(CommentedSeq, RoundTripRepresenter.represent_list)
+
+RoundTripRepresenter.add_representer(CommentedMap, RoundTripRepresenter.represent_dict)
+
+RoundTripRepresenter.add_representer(
+ CommentedOrderedMap, RoundTripRepresenter.represent_ordereddict
+)
+
+if sys.version_info >= (2, 7):
+ import collections
+
+ RoundTripRepresenter.add_representer(
+ collections.OrderedDict, RoundTripRepresenter.represent_ordereddict
+ )
+
+RoundTripRepresenter.add_representer(CommentedSet, RoundTripRepresenter.represent_set)
+
+RoundTripRepresenter.add_representer(
+ TaggedScalar, RoundTripRepresenter.represent_tagged_scalar
+)
+
+RoundTripRepresenter.add_representer(TimeStamp, RoundTripRepresenter.represent_datetime)