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authorpravindalve2023-05-30 04:20:14 +0530
committerGitHub2023-05-30 04:20:14 +0530
commitcbdd7ca21f1f673a3a739065098f7cc6c9c4b881 (patch)
tree595e888c38f00a314e751096b6bf636a544a5efe /venv/Lib/site-packages/astroid/helpers.py
parent7740d1ca0c2e6bf34900460b0c58fa4d528577fb (diff)
parent280c6aa89a15331fb76b7014957953dc72af6093 (diff)
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Merge pull request #63 from brenda-br/Fix-35HEADmaster
Restructure Project and Deployment
Diffstat (limited to 'venv/Lib/site-packages/astroid/helpers.py')
-rw-r--r--venv/Lib/site-packages/astroid/helpers.py273
1 files changed, 0 insertions, 273 deletions
diff --git a/venv/Lib/site-packages/astroid/helpers.py b/venv/Lib/site-packages/astroid/helpers.py
deleted file mode 100644
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--- a/venv/Lib/site-packages/astroid/helpers.py
+++ /dev/null
@@ -1,273 +0,0 @@
-# Copyright (c) 2015-2018 Claudiu Popa <pcmanticore@gmail.com>
-# Copyright (c) 2015-2016 Ceridwen <ceridwenv@gmail.com>
-# Copyright (c) 2018 Bryce Guinta <bryce.paul.guinta@gmail.com>
-
-# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
-# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER
-
-
-"""
-Various helper utilities.
-"""
-
-import builtins as builtins_mod
-
-from astroid import bases
-from astroid import context as contextmod
-from astroid import exceptions
-from astroid import manager
-from astroid import nodes
-from astroid import raw_building
-from astroid import scoped_nodes
-from astroid import util
-
-
-BUILTINS = builtins_mod.__name__
-
-
-def _build_proxy_class(cls_name, builtins):
- proxy = raw_building.build_class(cls_name)
- proxy.parent = builtins
- return proxy
-
-
-def _function_type(function, builtins):
- if isinstance(function, scoped_nodes.Lambda):
- if function.root().name == BUILTINS:
- cls_name = "builtin_function_or_method"
- else:
- cls_name = "function"
- elif isinstance(function, bases.BoundMethod):
- cls_name = "method"
- elif isinstance(function, bases.UnboundMethod):
- cls_name = "function"
- return _build_proxy_class(cls_name, builtins)
-
-
-def _object_type(node, context=None):
- astroid_manager = manager.AstroidManager()
- builtins = astroid_manager.builtins_module
- context = context or contextmod.InferenceContext()
-
- for inferred in node.infer(context=context):
- if isinstance(inferred, scoped_nodes.ClassDef):
- if inferred.newstyle:
- metaclass = inferred.metaclass(context=context)
- if metaclass:
- yield metaclass
- continue
- yield builtins.getattr("type")[0]
- elif isinstance(inferred, (scoped_nodes.Lambda, bases.UnboundMethod)):
- yield _function_type(inferred, builtins)
- elif isinstance(inferred, scoped_nodes.Module):
- yield _build_proxy_class("module", builtins)
- else:
- yield inferred._proxied
-
-
-def object_type(node, context=None):
- """Obtain the type of the given node
-
- This is used to implement the ``type`` builtin, which means that it's
- used for inferring type calls, as well as used in a couple of other places
- in the inference.
- The node will be inferred first, so this function can support all
- sorts of objects, as long as they support inference.
- """
-
- try:
- types = set(_object_type(node, context))
- except exceptions.InferenceError:
- return util.Uninferable
- if len(types) > 1 or not types:
- return util.Uninferable
- return list(types)[0]
-
-
-def _object_type_is_subclass(obj_type, class_or_seq, context=None):
- if not isinstance(class_or_seq, (tuple, list)):
- class_seq = (class_or_seq,)
- else:
- class_seq = class_or_seq
-
- if obj_type is util.Uninferable:
- return util.Uninferable
-
- # Instances are not types
- class_seq = [
- item if not isinstance(item, bases.Instance) else util.Uninferable
- for item in class_seq
- ]
- # strict compatibility with issubclass
- # issubclass(type, (object, 1)) evaluates to true
- # issubclass(object, (1, type)) raises TypeError
- for klass in class_seq:
- if klass is util.Uninferable:
- raise exceptions.AstroidTypeError("arg 2 must be a type or tuple of types")
-
- for obj_subclass in obj_type.mro():
- if obj_subclass == klass:
- return True
- return False
-
-
-def object_isinstance(node, class_or_seq, context=None):
- """Check if a node 'isinstance' any node in class_or_seq
-
- :param node: A given node
- :param class_or_seq: Union[nodes.NodeNG, Sequence[nodes.NodeNG]]
- :rtype: bool
-
- :raises AstroidTypeError: if the given ``classes_or_seq`` are not types
- """
- obj_type = object_type(node, context)
- if obj_type is util.Uninferable:
- return util.Uninferable
- return _object_type_is_subclass(obj_type, class_or_seq, context=context)
-
-
-def object_issubclass(node, class_or_seq, context=None):
- """Check if a type is a subclass of any node in class_or_seq
-
- :param node: A given node
- :param class_or_seq: Union[Nodes.NodeNG, Sequence[nodes.NodeNG]]
- :rtype: bool
-
- :raises AstroidTypeError: if the given ``classes_or_seq`` are not types
- :raises AstroidError: if the type of the given node cannot be inferred
- or its type's mro doesn't work
- """
- if not isinstance(node, nodes.ClassDef):
- raise TypeError("{node} needs to be a ClassDef node".format(node=node))
- return _object_type_is_subclass(node, class_or_seq, context=context)
-
-
-def safe_infer(node, context=None):
- """Return the inferred value for the given node.
-
- Return None if inference failed or if there is some ambiguity (more than
- one node has been inferred).
- """
- try:
- inferit = node.infer(context=context)
- value = next(inferit)
- except exceptions.InferenceError:
- return None
- try:
- next(inferit)
- return None # None if there is ambiguity on the inferred node
- except exceptions.InferenceError:
- return None # there is some kind of ambiguity
- except StopIteration:
- return value
-
-
-def has_known_bases(klass, context=None):
- """Return true if all base classes of a class could be inferred."""
- try:
- return klass._all_bases_known
- except AttributeError:
- pass
- for base in klass.bases:
- result = safe_infer(base, context=context)
- # TODO: check for A->B->A->B pattern in class structure too?
- if (
- not isinstance(result, scoped_nodes.ClassDef)
- or result is klass
- or not has_known_bases(result, context=context)
- ):
- klass._all_bases_known = False
- return False
- klass._all_bases_known = True
- return True
-
-
-def _type_check(type1, type2):
- if not all(map(has_known_bases, (type1, type2))):
- raise exceptions._NonDeducibleTypeHierarchy
-
- if not all([type1.newstyle, type2.newstyle]):
- return False
- try:
- return type1 in type2.mro()[:-1]
- except exceptions.MroError:
- # The MRO is invalid.
- raise exceptions._NonDeducibleTypeHierarchy
-
-
-def is_subtype(type1, type2):
- """Check if *type1* is a subtype of *type2*."""
- return _type_check(type1=type2, type2=type1)
-
-
-def is_supertype(type1, type2):
- """Check if *type2* is a supertype of *type1*."""
- return _type_check(type1, type2)
-
-
-def class_instance_as_index(node):
- """Get the value as an index for the given instance.
-
- If an instance provides an __index__ method, then it can
- be used in some scenarios where an integer is expected,
- for instance when multiplying or subscripting a list.
- """
- context = contextmod.InferenceContext()
- context.callcontext = contextmod.CallContext(args=[node])
-
- try:
- for inferred in node.igetattr("__index__", context=context):
- if not isinstance(inferred, bases.BoundMethod):
- continue
-
- for result in inferred.infer_call_result(node, context=context):
- if isinstance(result, nodes.Const) and isinstance(result.value, int):
- return result
- except exceptions.InferenceError:
- pass
- return None
-
-
-def object_len(node, context=None):
- """Infer length of given node object
-
- :param Union[nodes.ClassDef, nodes.Instance] node:
- :param node: Node to infer length of
-
- :raises AstroidTypeError: If an invalid node is returned
- from __len__ method or no __len__ method exists
- :raises InferenceError: If the given node cannot be inferred
- or if multiple nodes are inferred
- :rtype int: Integer length of node
- """
- # pylint: disable=import-outside-toplevel; circular import
- from astroid.objects import FrozenSet
-
- inferred_node = safe_infer(node, context=context)
- if inferred_node is None or inferred_node is util.Uninferable:
- raise exceptions.InferenceError(node=node)
- if isinstance(inferred_node, nodes.Const) and isinstance(
- inferred_node.value, (bytes, str)
- ):
- return len(inferred_node.value)
- if isinstance(inferred_node, (nodes.List, nodes.Set, nodes.Tuple, FrozenSet)):
- return len(inferred_node.elts)
- if isinstance(inferred_node, nodes.Dict):
- return len(inferred_node.items)
- try:
- node_type = object_type(inferred_node, context=context)
- len_call = next(node_type.igetattr("__len__", context=context))
- except exceptions.AttributeInferenceError:
- raise exceptions.AstroidTypeError(
- "object of type '{}' has no len()".format(len_call.pytype())
- )
-
- result_of_len = next(len_call.infer_call_result(node, context))
- if (
- isinstance(result_of_len, nodes.Const)
- and result_of_len.pytype() == "builtins.int"
- ):
- return result_of_len.value
- raise exceptions.AstroidTypeError(
- "'{}' object cannot be interpreted as an integer".format(result_of_len)
- )