# 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)