ai-content-maker/.venv/Lib/site-packages/srsly/ruamel_yaml/resolver.py

411 lines
15 KiB
Python

# coding: utf-8
from __future__ import absolute_import
import re
if False: # MYPY
from typing import Any, Dict, List, Union, Text, Optional # NOQA
from .compat import VersionType # NOQA
from .compat import string_types, _DEFAULT_YAML_VERSION # NOQA
from .error import * # NOQA
from .nodes import MappingNode, ScalarNode, SequenceNode # NOQA
from .util import RegExp # NOQA
__all__ = ["BaseResolver", "Resolver", "VersionedResolver"]
# fmt: off
# resolvers consist of
# - a list of applicable version
# - a tag
# - a regexp
# - a list of first characters to match
implicit_resolvers = [
([(1, 2)],
u'tag:yaml.org,2002:bool',
RegExp(u'''^(?:true|True|TRUE|false|False|FALSE)$''', re.X),
list(u'tTfF')),
([(1, 1)],
u'tag:yaml.org,2002:bool',
RegExp(u'''^(?:y|Y|yes|Yes|YES|n|N|no|No|NO
|true|True|TRUE|false|False|FALSE
|on|On|ON|off|Off|OFF)$''', re.X),
list(u'yYnNtTfFoO')),
([(1, 2)],
u'tag:yaml.org,2002:float',
RegExp(u'''^(?:
[-+]?(?:[0-9][0-9_]*)\\.[0-9_]*(?:[eE][-+]?[0-9]+)?
|[-+]?(?:[0-9][0-9_]*)(?:[eE][-+]?[0-9]+)
|[-+]?\\.[0-9_]+(?:[eE][-+][0-9]+)?
|[-+]?\\.(?:inf|Inf|INF)
|\\.(?:nan|NaN|NAN))$''', re.X),
list(u'-+0123456789.')),
([(1, 1)],
u'tag:yaml.org,2002:float',
RegExp(u'''^(?:
[-+]?(?:[0-9][0-9_]*)\\.[0-9_]*(?:[eE][-+]?[0-9]+)?
|[-+]?(?:[0-9][0-9_]*)(?:[eE][-+]?[0-9]+)
|\\.[0-9_]+(?:[eE][-+][0-9]+)?
|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\.[0-9_]* # sexagesimal float
|[-+]?\\.(?:inf|Inf|INF)
|\\.(?:nan|NaN|NAN))$''', re.X),
list(u'-+0123456789.')),
([(1, 2)],
u'tag:yaml.org,2002:int',
RegExp(u'''^(?:[-+]?0b[0-1_]+
|[-+]?0o?[0-7_]+
|[-+]?[0-9_]+
|[-+]?0x[0-9a-fA-F_]+)$''', re.X),
list(u'-+0123456789')),
([(1, 1)],
u'tag:yaml.org,2002:int',
RegExp(u'''^(?:[-+]?0b[0-1_]+
|[-+]?0?[0-7_]+
|[-+]?(?:0|[1-9][0-9_]*)
|[-+]?0x[0-9a-fA-F_]+
|[-+]?[1-9][0-9_]*(?::[0-5]?[0-9])+)$''', re.X), # sexagesimal int
list(u'-+0123456789')),
([(1, 2), (1, 1)],
u'tag:yaml.org,2002:merge',
RegExp(u'^(?:<<)$'),
[u'<']),
([(1, 2), (1, 1)],
u'tag:yaml.org,2002:null',
RegExp(u'''^(?: ~
|null|Null|NULL
| )$''', re.X),
[u'~', u'n', u'N', u'']),
([(1, 2), (1, 1)],
u'tag:yaml.org,2002:timestamp',
RegExp(u'''^(?:[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]
|[0-9][0-9][0-9][0-9] -[0-9][0-9]? -[0-9][0-9]?
(?:[Tt]|[ \\t]+)[0-9][0-9]?
:[0-9][0-9] :[0-9][0-9] (?:\\.[0-9]*)?
(?:[ \\t]*(?:Z|[-+][0-9][0-9]?(?::[0-9][0-9])?))?)$''', re.X),
list(u'0123456789')),
([(1, 2), (1, 1)],
u'tag:yaml.org,2002:value',
RegExp(u'^(?:=)$'),
[u'=']),
# The following resolver is only for documentation purposes. It cannot work
# because plain scalars cannot start with '!', '&', or '*'.
([(1, 2), (1, 1)],
u'tag:yaml.org,2002:yaml',
RegExp(u'^(?:!|&|\\*)$'),
list(u'!&*')),
]
# fmt: on
class ResolverError(YAMLError):
pass
class BaseResolver(object):
DEFAULT_SCALAR_TAG = u"tag:yaml.org,2002:str"
DEFAULT_SEQUENCE_TAG = u"tag:yaml.org,2002:seq"
DEFAULT_MAPPING_TAG = u"tag:yaml.org,2002:map"
yaml_implicit_resolvers = {} # type: Dict[Any, Any]
yaml_path_resolvers = {} # type: Dict[Any, Any]
def __init__(self, loadumper=None):
# type: (Any, Any) -> None
self.loadumper = loadumper
if (
self.loadumper is not None
and getattr(self.loadumper, "_resolver", None) is None
):
self.loadumper._resolver = self.loadumper
self._loader_version = None # type: Any
self.resolver_exact_paths = [] # type: List[Any]
self.resolver_prefix_paths = [] # type: List[Any]
@property
def parser(self):
# type: () -> Any
if self.loadumper is not None:
if hasattr(self.loadumper, "typ"):
return self.loadumper.parser
return self.loadumper._parser
return None
@classmethod
def add_implicit_resolver_base(cls, tag, regexp, first):
# type: (Any, Any, Any) -> None
if "yaml_implicit_resolvers" not in cls.__dict__:
# deepcopy doesn't work here
cls.yaml_implicit_resolvers = dict(
(k, cls.yaml_implicit_resolvers[k][:])
for k in cls.yaml_implicit_resolvers
)
if first is None:
first = [None]
for ch in first:
cls.yaml_implicit_resolvers.setdefault(ch, []).append((tag, regexp))
@classmethod
def add_implicit_resolver(cls, tag, regexp, first):
# type: (Any, Any, Any) -> None
if "yaml_implicit_resolvers" not in cls.__dict__:
# deepcopy doesn't work here
cls.yaml_implicit_resolvers = dict(
(k, cls.yaml_implicit_resolvers[k][:])
for k in cls.yaml_implicit_resolvers
)
if first is None:
first = [None]
for ch in first:
cls.yaml_implicit_resolvers.setdefault(ch, []).append((tag, regexp))
implicit_resolvers.append(([(1, 2), (1, 1)], tag, regexp, first))
# @classmethod
# def add_implicit_resolver(cls, tag, regexp, first):
@classmethod
def add_path_resolver(cls, tag, path, kind=None):
# type: (Any, Any, Any) -> None
# Note: `add_path_resolver` is experimental. The API could be changed.
# `new_path` is a pattern that is matched against the path from the
# root to the node that is being considered. `node_path` elements are
# tuples `(node_check, index_check)`. `node_check` is a node class:
# `ScalarNode`, `SequenceNode`, `MappingNode` or `None`. `None`
# matches any kind of a node. `index_check` could be `None`, a boolean
# value, a string value, or a number. `None` and `False` match against
# any _value_ of sequence and mapping nodes. `True` matches against
# any _key_ of a mapping node. A string `index_check` matches against
# a mapping value that corresponds to a scalar key which content is
# equal to the `index_check` value. An integer `index_check` matches
# against a sequence value with the index equal to `index_check`.
if "yaml_path_resolvers" not in cls.__dict__:
cls.yaml_path_resolvers = cls.yaml_path_resolvers.copy()
new_path = [] # type: List[Any]
for element in path:
if isinstance(element, (list, tuple)):
if len(element) == 2:
node_check, index_check = element
elif len(element) == 1:
node_check = element[0]
index_check = True
else:
raise ResolverError("Invalid path element: %s" % (element,))
else:
node_check = None
index_check = element
if node_check is str:
node_check = ScalarNode
elif node_check is list:
node_check = SequenceNode
elif node_check is dict:
node_check = MappingNode
elif (
node_check not in [ScalarNode, SequenceNode, MappingNode]
and not isinstance(node_check, string_types)
and node_check is not None
):
raise ResolverError("Invalid node checker: %s" % (node_check,))
if (
not isinstance(index_check, (string_types, int))
and index_check is not None
):
raise ResolverError("Invalid index checker: %s" % (index_check,))
new_path.append((node_check, index_check))
if kind is str:
kind = ScalarNode
elif kind is list:
kind = SequenceNode
elif kind is dict:
kind = MappingNode
elif kind not in [ScalarNode, SequenceNode, MappingNode] and kind is not None:
raise ResolverError("Invalid node kind: %s" % (kind,))
cls.yaml_path_resolvers[tuple(new_path), kind] = tag
def descend_resolver(self, current_node, current_index):
# type: (Any, Any) -> None
if not self.yaml_path_resolvers:
return
exact_paths = {}
prefix_paths = []
if current_node:
depth = len(self.resolver_prefix_paths)
for path, kind in self.resolver_prefix_paths[-1]:
if self.check_resolver_prefix(
depth, path, kind, current_node, current_index
):
if len(path) > depth:
prefix_paths.append((path, kind))
else:
exact_paths[kind] = self.yaml_path_resolvers[path, kind]
else:
for path, kind in self.yaml_path_resolvers:
if not path:
exact_paths[kind] = self.yaml_path_resolvers[path, kind]
else:
prefix_paths.append((path, kind))
self.resolver_exact_paths.append(exact_paths)
self.resolver_prefix_paths.append(prefix_paths)
def ascend_resolver(self):
# type: () -> None
if not self.yaml_path_resolvers:
return
self.resolver_exact_paths.pop()
self.resolver_prefix_paths.pop()
def check_resolver_prefix(self, depth, path, kind, current_node, current_index):
# type: (int, Text, Any, Any, Any) -> bool
node_check, index_check = path[depth - 1]
if isinstance(node_check, string_types):
if current_node.tag != node_check:
return False
elif node_check is not None:
if not isinstance(current_node, node_check):
return False
if index_check is True and current_index is not None:
return False
if (index_check is False or index_check is None) and current_index is None:
return False
if isinstance(index_check, string_types):
if not (
isinstance(current_index, ScalarNode)
and index_check == current_index.value
):
return False
elif isinstance(index_check, int) and not isinstance(index_check, bool):
if index_check != current_index:
return False
return True
def resolve(self, kind, value, implicit):
# type: (Any, Any, Any) -> Any
if kind is ScalarNode and implicit[0]:
if value == "":
resolvers = self.yaml_implicit_resolvers.get("", [])
else:
resolvers = self.yaml_implicit_resolvers.get(value[0], [])
resolvers += self.yaml_implicit_resolvers.get(None, [])
for tag, regexp in resolvers:
if regexp.match(value):
return tag
implicit = implicit[1]
if bool(self.yaml_path_resolvers):
exact_paths = self.resolver_exact_paths[-1]
if kind in exact_paths:
return exact_paths[kind]
if None in exact_paths:
return exact_paths[None]
if kind is ScalarNode:
return self.DEFAULT_SCALAR_TAG
elif kind is SequenceNode:
return self.DEFAULT_SEQUENCE_TAG
elif kind is MappingNode:
return self.DEFAULT_MAPPING_TAG
@property
def processing_version(self):
# type: () -> Any
return None
class Resolver(BaseResolver):
pass
for ir in implicit_resolvers:
if (1, 2) in ir[0]:
Resolver.add_implicit_resolver_base(*ir[1:])
class VersionedResolver(BaseResolver):
"""
contrary to the "normal" resolver, the smart resolver delays loading
the pattern matching rules. That way it can decide to load 1.1 rules
or the (default) 1.2 rules, that no longer support octal without 0o, sexagesimals
and Yes/No/On/Off booleans.
"""
def __init__(self, version=None, loader=None, loadumper=None):
# type: (Optional[VersionType], Any, Any) -> None
if loader is None and loadumper is not None:
loader = loadumper
BaseResolver.__init__(self, loader)
self._loader_version = self.get_loader_version(version)
self._version_implicit_resolver = {} # type: Dict[Any, Any]
def add_version_implicit_resolver(self, version, tag, regexp, first):
# type: (VersionType, Any, Any, Any) -> None
if first is None:
first = [None]
impl_resolver = self._version_implicit_resolver.setdefault(version, {})
for ch in first:
impl_resolver.setdefault(ch, []).append((tag, regexp))
def get_loader_version(self, version):
# type: (Optional[VersionType]) -> Any
if version is None or isinstance(version, tuple):
return version
if isinstance(version, list):
return tuple(version)
# assume string
return tuple(map(int, version.split(u".")))
@property
def versioned_resolver(self):
# type: () -> Any
"""
select the resolver based on the version we are parsing
"""
version = self.processing_version
if version not in self._version_implicit_resolver:
for x in implicit_resolvers:
if version in x[0]:
self.add_version_implicit_resolver(version, x[1], x[2], x[3])
return self._version_implicit_resolver[version]
def resolve(self, kind, value, implicit):
# type: (Any, Any, Any) -> Any
if kind is ScalarNode and implicit[0]:
if value == "":
resolvers = self.versioned_resolver.get("", [])
else:
resolvers = self.versioned_resolver.get(value[0], [])
resolvers += self.versioned_resolver.get(None, [])
for tag, regexp in resolvers:
if regexp.match(value):
return tag
implicit = implicit[1]
if bool(self.yaml_path_resolvers):
exact_paths = self.resolver_exact_paths[-1]
if kind in exact_paths:
return exact_paths[kind]
if None in exact_paths:
return exact_paths[None]
if kind is ScalarNode:
return self.DEFAULT_SCALAR_TAG
elif kind is SequenceNode:
return self.DEFAULT_SEQUENCE_TAG
elif kind is MappingNode:
return self.DEFAULT_MAPPING_TAG
@property
def processing_version(self):
# type: () -> Any
try:
version = self.loadumper._scanner.yaml_version
except AttributeError:
try:
if hasattr(self.loadumper, "typ"):
version = self.loadumper.version
else:
version = self.loadumper._serializer.use_version # dumping
except AttributeError:
version = None
if version is None:
version = self._loader_version
if version is None:
version = _DEFAULT_YAML_VERSION
return version