def add_multi_constructor(tag_prefix,
multi_constructor,
Loader=None,
constructor=Constructor):
# type: (Any, Any, Any, Any) -> None
"""
Add a multi-constructor for the given tag prefix.
Multi-constructor is called for a node if its tag starts with tag_prefix.
Multi-constructor accepts a Loader instance, a tag suffix,
and a node object and produces the corresponding Python object.
"""
if Loader is None:
constructor.add_multi_constructor(tag_prefix, multi_constructor)
else:
if False and hasattr(Loader, 'add_multi_constructor'):
Loader.add_multi_constructor(tag_prefix, constructor)
return
if issubclass(Loader, BaseLoader):
BaseConstructor.add_multi_constructor(tag_prefix,
multi_constructor)
elif issubclass(Loader, SafeLoader):
SafeConstructor.add_multi_constructor(tag_prefix,
multi_constructor)
elif issubclass(Loader, ruamel.yaml.loader.Loader):
Constructor.add_multi_constructor(tag_prefix, multi_constructor)
elif issubclass(Loader, RoundTripLoader):
RoundTripConstructor.add_multi_constructor(tag_prefix,
multi_constructor)
else:
raise NotImplementedError
def __init__(self, stream, version=None, preserve_quotes=None):
Reader.__init__(self, stream)
Scanner.__init__(self)
Parser.__init__(self)
Composer.__init__(self)
Constructor.__init__(self)
Resolver.__init__(self)
def add_constructor(tag,
object_constructor,
Loader=None,
constructor=Constructor):
# type: (Any, Any, Any, Any) -> None
"""
Add an object constructor for the given tag.
object_onstructor is a function that accepts a Loader instance
and a node object and produces the corresponding Python object.
"""
if Loader is None:
constructor.add_constructor(tag, object_constructor)
else:
if hasattr(Loader, 'add_constructor'):
Loader.add_constructor(tag, object_constructor)
return
if issubclass(Loader, BaseLoader):
BaseConstructor.add_constructor(tag, object_constructor)
elif issubclass(Loader, SafeLoader):
SafeConstructor.add_constructor(tag, object_constructor)
elif issubclass(Loader, Loader):
Constructor.add_constructor(tag, object_constructor)
elif issubclass(Loader, RoundTripLoader):
RoundTripConstructor.add_constructor(tag, object_constructor)
else:
raise NotImplementedError
def __init__(self, stream, version=None, preserve_quotes=None):
Reader.__init__(self, stream)
Scanner.__init__(self)
Parser.__init__(self)
Composer.__init__(self)
Constructor.__init__(self)
Resolver.__init__(self)
def __init__(self, stream, version=None, preserve_quotes=None):
# type: (StreamTextType, Optional[VersionType], Optional[bool]) -> None
Reader.__init__(self, stream, loader=self)
Scanner.__init__(self, loader=self)
Parser.__init__(self, loader=self)
Composer.__init__(self, loader=self)
Constructor.__init__(self, loader=self)
VersionedResolver.__init__(self, version, loader=self)
def __init__(self, stream):
if hasattr(stream, 'read'):
stream = stream.read()
CanonicalScanner.__init__(self, stream)
CanonicalParser.__init__(self)
Composer.__init__(self)
Constructor.__init__(self)
Resolver.__init__(self)
def __init__(self, stream, version=None, preserve_quotes=None):
CParser.__init__(self, stream)
Constructor.__init__(self)
Resolver.__init__(self)
def __init__(self, stream, version=None, preserve_quotes=None):
# type: (StreamTextType, Optional[VersionType], Optional[bool]) -> None
CParser.__init__(self, stream)
self._parser = self._composer = self
Constructor.__init__(self, loader=self)
Resolver.__init__(self, loadumper=self)
def __init__(self, stream, version=None, preserve_quotes=None):
CParser.__init__(self, stream)
Constructor.__init__(self)
Resolver.__init__(self)
def from_yaml(cls, constructor: Constructor,
node: MappingNode) -> "Question":
value = list(constructor.construct_yaml_map(node))[0]
return cls(**value)
