diff options
Diffstat (limited to 'lib/ruyaml/representer.py')
| -rw-r--r-- | lib/ruyaml/representer.py | 1197 |
1 files changed, 1197 insertions, 0 deletions
diff --git a/lib/ruyaml/representer.py b/lib/ruyaml/representer.py new file mode 100644 index 0000000..17d6356 --- /dev/null +++ b/lib/ruyaml/representer.py @@ -0,0 +1,1197 @@ +# coding: utf-8 + +import base64 +import copyreg +import datetime +import types +from collections import OrderedDict + +from ruyaml.anchor import Anchor +from ruyaml.comments import ( + CommentedKeyMap, + CommentedKeySeq, + CommentedMap, + CommentedOrderedMap, + CommentedSeq, + CommentedSet, + TaggedScalar, + comment_attrib, + merge_attrib, +) +from ruyaml.compat import ordereddict # NOQA; type: ignore +from ruyaml.compat import _F +from ruyaml.error import * # NOQA +from ruyaml.nodes import * # NOQA +from ruyaml.scalarbool import ScalarBoolean +from ruyaml.scalarfloat import ScalarFloat +from ruyaml.scalarint import BinaryInt, HexCapsInt, HexInt, OctalInt, ScalarInt +from ruyaml.scalarstring import ( + DoubleQuotedScalarString, + FoldedScalarString, + LiteralScalarString, + PlainScalarString, + SingleQuotedScalarString, +) +from ruyaml.timestamp import TimeStamp + +if False: # MYPY + from typing import Any, Dict, List, Optional, Text, Union # NOQA + +# fmt: off +__all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer', + 'RepresenterError', 'RoundTripRepresenter'] +# fmt: on + + +class RepresenterError(YAMLError): + pass + + +class BaseRepresenter: + + 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 # type: ignore + return self.dumper._serializer # type: ignore + 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( + # f"recursive objects are not allowed: {data!r}") + return node + # self.represented_objects[alias_key] = None + self.object_keeper.append(data) + data_types = type(data).__mro__ + 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, str(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, (bytes, str, bool, int, float)): + return True + return False + + def represent_none(self, data): + # type: (Any) -> Any + return self.represent_scalar('tag:yaml.org,2002:null', 'null') + + def represent_str(self, data): + # type: (Any) -> Any + return self.represent_scalar('tag:yaml.org,2002:str', data) + + def represent_binary(self, data): + # type: (Any) -> Any + data = base64.encodebytes(data).decode('ascii') + return self.represent_scalar('tag:yaml.org,2002:binary', data, style='|') + + def represent_bool(self, data, anchor=None): + # type: (Any, Optional[Any]) -> Any + try: + value = self.dumper.boolean_representation[bool(data)] # type: ignore + except AttributeError: + if data: + value = 'true' + else: + value = 'false' + return self.represent_scalar('tag:yaml.org,2002:bool', value, anchor=anchor) + + def represent_int(self, data): + # type: (Any) -> Any + return self.represent_scalar('tag:yaml.org,2002:int', str(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 = '.nan' + elif data == self.inf_value: + value = '.inf' + elif data == -self.inf_value: + value = '-.inf' + else: + value = repr(data).lower() + if getattr(self.serializer, 'use_version', None) == (1, 1): + if '.' not in value and '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('e', '.0e', 1) + return self.represent_scalar('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('tag:yaml.org,2002:seq', data) + + # value = [] + # for item_key, item_value in data: + # value.append(self.represent_mapping('tag:yaml.org,2002:map', + # [(item_key, item_value)])) + # return SequenceNode('tag:yaml.org,2002:pairs', value) + + def represent_dict(self, data): + # type: (Any) -> Any + return self.represent_mapping('tag:yaml.org,2002:map', data) + + def represent_ordereddict(self, data): + # type: (Any) -> Any + return self.represent_omap('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('tag:yaml.org,2002:set', value) + + def represent_date(self, data): + # type: (Any) -> Any + value = data.isoformat() + return self.represent_scalar('tag:yaml.org,2002:timestamp', value) + + def represent_datetime(self, data): + # type: (Any) -> Any + value = data.isoformat(' ') + return self.represent_scalar('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(_F('cannot represent an object: {data!s}', data=data)) + + +SafeRepresenter.add_representer(type(None), SafeRepresenter.represent_none) + +SafeRepresenter.add_representer(str, SafeRepresenter.represent_str) + +SafeRepresenter.add_representer(bytes, SafeRepresenter.represent_binary) + +SafeRepresenter.add_representer(bool, SafeRepresenter.represent_bool) + +SafeRepresenter.add_representer(int, SafeRepresenter.represent_int) + +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) + +SafeRepresenter.add_representer(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): + def represent_complex(self, data): + # type: (Any) -> Any + if data.imag == 0.0: + data = repr(data.real) + elif data.real == 0.0: + data = _F('{data_imag!r}j', data_imag=data.imag) + elif data.imag > 0: + data = _F( + '{data_real!r}+{data_imag!r}j', data_real=data.real, data_imag=data.imag + ) + else: + data = _F( + '{data_real!r}{data_imag!r}j', data_real=data.real, data_imag=data.imag + ) + return self.represent_scalar('tag:yaml.org,2002:python/complex', data) + + def represent_tuple(self, data): + # type: (Any) -> Any + return self.represent_sequence('tag:yaml.org,2002:python/tuple', data) + + def represent_name(self, data): + # type: (Any) -> Any + try: + name = _F( + '{modname!s}.{qualname!s}', + modname=data.__module__, + qualname=data.__qualname__, + ) + except AttributeError: + # ToDo: check if this can be reached in Py3 + name = _F( + '{modname!s}.{name!s}', modname=data.__module__, name=data.__name__ + ) + return self.represent_scalar('tag:yaml.org,2002:python/name:' + name, "") + + def represent_module(self, data): + # type: (Any) -> Any + return self.represent_scalar( + 'tag:yaml.org,2002:python/module:' + data.__name__, "" + ) + + 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: # type: ignore + reduce = copyreg.dispatch_table[cls](data) # type: ignore + elif hasattr(data, '__reduce_ex__'): + reduce = data.__reduce_ex__(2) + elif hasattr(data, '__reduce__'): + reduce = data.__reduce__() + else: + raise RepresenterError(_F('cannot represent object: {data!r}', data=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 = 'tag:yaml.org,2002:python/object/new:' + newobj = True + else: + tag = 'tag:yaml.org,2002:python/object/apply:' + newobj = False + try: + function_name = _F( + '{fun!s}.{qualname!s}', + fun=function.__module__, + qualname=function.__qualname__, + ) + except AttributeError: + # ToDo: check if this can be reached in Py3 + function_name = _F( + '{fun!s}.{name!s}', fun=function.__module__, name=function.__name__ + ) + if ( + not args + and not listitems + and not dictitems + and isinstance(state, dict) + and newobj + ): + return self.represent_mapping( + '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) + + +Representer.add_representer(complex, Representer.represent_complex) + +Representer.add_representer(tuple, Representer.represent_tuple) + +Representer.add_representer(type, 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) + +Representer.add_multi_representer(object, Representer.represent_object) + +Representer.add_multi_representer(type, Representer.represent_name) + + +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('tag:yaml.org,2002:null', 'null') + return self.represent_scalar('tag:yaml.org,2002:null', "") + + def represent_literal_scalarstring(self, data): + # type: (Any) -> Any + tag = None + style = '|' + anchor = data.yaml_anchor(any=True) + tag = '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:] + tag = '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) + tag = '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) + tag = '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) + tag = '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( + '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('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 = '.nan' + elif data == self.inf_value: + value = '.inf' + elif data == -self.inf_value: + value = '-.inf' + if value: + return self.represent_scalar( + '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 = '{}{: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 = '{}{: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('0.', '.') + while len(value) < data._width: + value += '0' + else: + # exponent + m, es = '{:{}.{}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 += '0' + if data._m_sign and data > 0: + m1 = '+' + m1 + esgn = '+' if data._e_sign else "" + if data._prec < 0: # mantissa without dot + if m2 != '0': + e -= len(m2) + else: + m2 = "" + while (len(m1) + len(m2) - (1 if data._m_sign else 0)) < data._width: + m2 += '0' + e -= 1 + value = m1 + m2 + data._exp + '{:{}0{}d}'.format(e, esgn, data._e_width) + elif data._prec == 0: # mantissa with trailing dot + e -= len(m2) + value = ( + m1 + + m2 + + '.' + + data._exp + + '{:{}0{}d}'.format(e, esgn, data._e_width) + ) + else: + if data._m_lead0 > 0: + m2 = '0' * (data._m_lead0 - 1) + m1 + m2 + m1 = '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 + + '.' + + m2 + + data._exp + + '{:{}0{}d}'.format(e, esgn, data._e_width) + ) + + if value is None: + value = repr(data).lower() + return self.represent_scalar('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 + if node.comment is None: + node.comment = comment.comment + else: + # as we are potentially going to extend this, make a new list + 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( + 'tag:yaml.org,2002:seq', data, flow_style=True + ) + if isinstance(data, CommentedKeyMap): + self.alias_key = None + return self.represent_mapping( + '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) + if node.comment is None: + node.comment = comment.comment + else: + # as we are potentially going to extend this, make a new list + node.comment = comment.comment[:] + if node.comment and node.comment[1]: + for ct in node.comment[1]: + ct.reset() + item_comments = comment.items + if self.dumper.comment_handling is None: # type: ignore + 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 + else: + # NEWCMNT + 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 + # issue 351 did throw this because the comment from the list item was + # moved to the dict + 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('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) + if node.comment is None: + node.comment = comment.comment + else: + # as we are potentially going to extend this, make a new list + 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 = '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) + if node.comment is None: + node.comment = comment.comment + else: + # as we are potentially going to extend this, make a new list + 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 = '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 = '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('tag:yaml.org,2002:timestamp', 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) + + def represent_yaml_object(self, tag, data, cls, flow_style=None): + if hasattr(data, '__getstate__'): + state = data.__getstate__() + else: + state = data.__dict__.copy() + anchor = state.pop(Anchor.attrib, None) + res = self.represent_mapping(tag, state, flow_style=flow_style) + if anchor is not None: + res.anchor = anchor + return res + + +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 +) + +RoundTripRepresenter.add_representer( + 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) |