diff options
Diffstat (limited to 'external_libs/python/PyYAML-3.01/lib/yaml/representer.py')
| -rw-r--r-- | external_libs/python/PyYAML-3.01/lib/yaml/representer.py | 501 |
1 files changed, 0 insertions, 501 deletions
diff --git a/external_libs/python/PyYAML-3.01/lib/yaml/representer.py b/external_libs/python/PyYAML-3.01/lib/yaml/representer.py deleted file mode 100644 index cb37169d..00000000 --- a/external_libs/python/PyYAML-3.01/lib/yaml/representer.py +++ /dev/null @@ -1,501 +0,0 @@ - -__all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer', - 'RepresenterError'] - -from error import * -from nodes import * - -try: - import datetime - datetime_available = True -except ImportError: - datetime_available = False - -try: - set -except NameError: - from sets import Set as set - -import sys, copy_reg - -class RepresenterError(YAMLError): - pass - -class BaseRepresenter: - - yaml_representers = {} - yaml_multi_representers = {} - - def __init__(self, default_style=None, default_flow_style=None): - self.default_style = default_style - self.default_flow_style = default_flow_style - self.represented_objects = {} - - def represent(self, data): - node = self.represent_data(data) - self.serialize(node) - self.represented_objects = {} - - class C: pass - c = C() - def f(): pass - classobj_type = type(C) - instance_type = type(c) - function_type = type(f) - builtin_function_type = type(abs) - module_type = type(sys) - del C, c, f - - def get_classobj_bases(self, cls): - bases = [cls] - for base in cls.__bases__: - bases.extend(self.get_classobj_bases(base)) - return bases - - def represent_data(self, data): - if self.ignore_aliases(data): - alias_key = None - else: - alias_key = id(data) - if alias_key is not None: - if alias_key in self.represented_objects: - node = self.represented_objects[alias_key] - if node is None: - raise RepresenterError("recursive objects are not allowed: %r" % data) - return node - self.represented_objects[alias_key] = None - data_types = type(data).__mro__ - if type(data) is self.instance_type: - data_types = self.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, unicode(data)) - if alias_key is not None: - self.represented_objects[alias_key] = node - return node - - def add_representer(cls, data_type, representer): - if not 'yaml_representers' in cls.__dict__: - cls.yaml_representers = cls.yaml_representers.copy() - cls.yaml_representers[data_type] = representer - add_representer = classmethod(add_representer) - - def add_multi_representer(cls, data_type, representer): - if not 'yaml_multi_representers' in cls.__dict__: - cls.yaml_multi_representers = cls.yaml_multi_representers.copy() - cls.yaml_multi_representers[data_type] = representer - add_multi_representer = classmethod(add_multi_representer) - - def represent_scalar(self, tag, value, style=None): - if style is None: - style = self.default_style - return ScalarNode(tag, value, style=style) - - def represent_sequence(self, tag, sequence, flow_style=None): - best_style = True - value = [] - 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(self.represent_data(item)) - if flow_style is None: - flow_style = self.default_flow_style - if flow_style is None: - flow_style = best_style - return SequenceNode(tag, value, flow_style=flow_style) - - def represent_mapping(self, tag, mapping, flow_style=None): - best_style = True - if hasattr(mapping, 'keys'): - value = {} - for item_key in mapping.keys(): - item_value = mapping[item_key] - node_key = self.represent_data(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[node_key] = node_value - else: - value = [] - for item_key, item_value in mapping: - node_key = self.represent_data(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: - flow_style = self.default_flow_style - if flow_style is None: - flow_style = best_style - return MappingNode(tag, value, flow_style=flow_style) - - def ignore_aliases(self, data): - return False - -class SafeRepresenter(BaseRepresenter): - - def ignore_aliases(self, data): - if data in [None, ()]: - return True - if isinstance(data, (str, unicode, bool, int, float)): - return True - - def represent_none(self, data): - return self.represent_scalar(u'tag:yaml.org,2002:null', - u'null') - - def represent_str(self, data): - 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): - return self.represent_scalar(u'tag:yaml.org,2002:str', data) - - def represent_bool(self, data): - if data: - value = u'true' - else: - value = u'false' - return self.represent_scalar(u'tag:yaml.org,2002:bool', value) - - def represent_int(self, data): - return self.represent_scalar(u'tag:yaml.org,2002:int', unicode(data)) - - def represent_long(self, data): - return self.represent_scalar(u'tag:yaml.org,2002:int', unicode(data)) - - repr_pos_inf = repr(1e300000) - repr_neg_inf = repr(-1e300000) - repr_nan = repr(1e300000/1e300000) - - def represent_float(self, data): - repr_data = repr(data) - if repr_data == self.repr_pos_inf: - value = u'.inf' - elif repr_data == self.repr_neg_inf: - value = u'-.inf' - elif repr_data == self.repr_nan: - value = u'.nan' - else: - value = unicode(repr_data) - return self.represent_scalar(u'tag:yaml.org,2002:float', value) - - def represent_list(self, data): - 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): - return self.represent_mapping(u'tag:yaml.org,2002:map', data) - - def represent_set(self, data): - value = {} - for key in data: - value[key] = None - return self.represent_mapping(u'tag:yaml.org,2002:set', value) - - def represent_date(self, data): - value = u'%04d-%02d-%02d' % (data.year, data.month, data.day) - return self.represent_scalar(u'tag:yaml.org,2002:timestamp', value) - - def represent_datetime(self, data): - value = u'%04d-%02d-%02d %02d:%02d:%02d' \ - % (data.year, data.month, data.day, - data.hour, data.minute, data.second) - if data.microsecond: - value += u'.' + unicode(data.microsecond/1000000.0).split(u'.')[1] - if data.utcoffset(): - value += unicode(data.utcoffset()) - return self.represent_scalar(u'tag:yaml.org,2002:timestamp', value) - - def represent_yaml_object(self, tag, data, cls, flow_style=None): - if hasattr(data, '__getstate__'): - state = data.__getstate__() - else: - state = data.__dict__.copy() - if isinstance(state, dict): - state = state.items() - state.sort() - return self.represent_mapping(tag, state, flow_style=flow_style) - - def represent_undefined(self, data): - raise RepresenterError("cannot represent an object: %s" % data) - -SafeRepresenter.add_representer(type(None), - SafeRepresenter.represent_none) - -SafeRepresenter.add_representer(str, - SafeRepresenter.represent_str) - -SafeRepresenter.add_representer(unicode, - SafeRepresenter.represent_unicode) - -SafeRepresenter.add_representer(bool, - SafeRepresenter.represent_bool) - -SafeRepresenter.add_representer(int, - SafeRepresenter.represent_int) - -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) - -if datetime_available: - 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_str(self, data): - 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): - 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): - 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, unicode(data)) - - def represent_complex(self, data): - 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): - return self.represent_sequence(u'tag:yaml.org,2002:python/tuple', data) - - def represent_name(self, data): - name = u'%s.%s' % (data.__module__, data.__name__) - return self.represent_scalar(u'tag:yaml.org,2002:python/name:'+name, u'') - - def represent_module(self, data): - return self.represent_scalar( - u'tag:yaml.org,2002:python/module:'+data.__name__, u'') - - def represent_instance(self, data): - # 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): - state = state.items() - state.sort() - 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 args: - value['args'] = args - value['state'] = state - return self.represent_mapping( - u'tag:yaml.org,2002:python/object/new:'+class_name, value) - - def represent_object(self, data): - # 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 copy_reg.dispatch_table: - reduce = copy_reg.dispatch_table[cls] - 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 - function_name = u'%s.%s' % (function.__module__, function.__name__) - if not args and not listitems and not dictitems \ - and isinstance(state, dict) and newobj: - state = state.items() - state.sort() - 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) - -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) - -Representer.add_representer(Representer.classobj_type, - Representer.represent_name) - -Representer.add_representer(Representer.function_type, - Representer.represent_name) - -Representer.add_representer(Representer.builtin_function_type, - Representer.represent_name) - -Representer.add_representer(Representer.module_type, - Representer.represent_module) - -Representer.add_multi_representer(Representer.instance_type, - Representer.represent_instance) - -Representer.add_multi_representer(object, - Representer.represent_object) - |