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Diffstat (limited to 'src/main/python/venv/Lib/site-packages/astroid/interpreter')
12 files changed, 1158 insertions, 0 deletions
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b/src/main/python/venv/Lib/site-packages/astroid/interpreter/_import/__pycache__/util.cpython-37.pyc diff --git a/src/main/python/venv/Lib/site-packages/astroid/interpreter/_import/spec.py b/src/main/python/venv/Lib/site-packages/astroid/interpreter/_import/spec.py new file mode 100644 index 0000000..84e093b --- /dev/null +++ b/src/main/python/venv/Lib/site-packages/astroid/interpreter/_import/spec.py @@ -0,0 +1,344 @@ +# Copyright (c) 2016-2018 Claudiu Popa <pcmanticore@gmail.com> +# Copyright (c) 2016 Derek Gustafson <degustaf@gmail.com> +# Copyright (c) 2017 Chris Philip <chrisp533@gmail.com> +# Copyright (c) 2017 Hugo <hugovk@users.noreply.github.com> +# Copyright (c) 2017 ioanatia <ioanatia@users.noreply.github.com> +# Copyright (c) 2017 Calen Pennington <cale@edx.org> +# Copyright (c) 2018 Nick Drozd <nicholasdrozd@gmail.com> + +import abc +import collections +import distutils +import enum +import imp +import os +import sys +import zipimport + +try: + import importlib.machinery + + _HAS_MACHINERY = True +except ImportError: + _HAS_MACHINERY = False + +try: + from functools import lru_cache +except ImportError: + from backports.functools_lru_cache import lru_cache + +from . import util + +ModuleType = enum.Enum( + "ModuleType", + "C_BUILTIN C_EXTENSION PKG_DIRECTORY " + "PY_CODERESOURCE PY_COMPILED PY_FROZEN PY_RESOURCE " + "PY_SOURCE PY_ZIPMODULE PY_NAMESPACE", +) +_ImpTypes = { + imp.C_BUILTIN: ModuleType.C_BUILTIN, + imp.C_EXTENSION: ModuleType.C_EXTENSION, + imp.PKG_DIRECTORY: ModuleType.PKG_DIRECTORY, + imp.PY_COMPILED: ModuleType.PY_COMPILED, + imp.PY_FROZEN: ModuleType.PY_FROZEN, + imp.PY_SOURCE: ModuleType.PY_SOURCE, +} +if hasattr(imp, "PY_RESOURCE"): + _ImpTypes[imp.PY_RESOURCE] = ModuleType.PY_RESOURCE +if hasattr(imp, "PY_CODERESOURCE"): + _ImpTypes[imp.PY_CODERESOURCE] = ModuleType.PY_CODERESOURCE + + +def _imp_type_to_module_type(imp_type): + return _ImpTypes[imp_type] + + +_ModuleSpec = collections.namedtuple( + "_ModuleSpec", "name type location " "origin submodule_search_locations" +) + + +class ModuleSpec(_ModuleSpec): + """Defines a class similar to PEP 420's ModuleSpec + + A module spec defines a name of a module, its type, location + and where submodules can be found, if the module is a package. + """ + + def __new__( + cls, + name, + module_type, + location=None, + origin=None, + submodule_search_locations=None, + ): + return _ModuleSpec.__new__( + cls, + name=name, + type=module_type, + location=location, + origin=origin, + submodule_search_locations=submodule_search_locations, + ) + + +class Finder: + """A finder is a class which knows how to find a particular module.""" + + def __init__(self, path=None): + self._path = path or sys.path + + @abc.abstractmethod + def find_module(self, modname, module_parts, processed, submodule_path): + """Find the given module + + Each finder is responsible for each protocol of finding, as long as + they all return a ModuleSpec. + + :param str modname: The module which needs to be searched. + :param list module_parts: It should be a list of strings, + where each part contributes to the module's + namespace. + :param list processed: What parts from the module parts were processed + so far. + :param list submodule_path: A list of paths where the module + can be looked into. + :returns: A ModuleSpec, describing how and where the module was found, + None, otherwise. + """ + + def contribute_to_path(self, spec, processed): + """Get a list of extra paths where this finder can search.""" + + +class ImpFinder(Finder): + """A finder based on the imp module.""" + + def find_module(self, modname, module_parts, processed, submodule_path): + if submodule_path is not None: + submodule_path = list(submodule_path) + try: + stream, mp_filename, mp_desc = imp.find_module(modname, submodule_path) + except ImportError: + return None + + # Close resources. + if stream: + stream.close() + + return ModuleSpec( + name=modname, + location=mp_filename, + module_type=_imp_type_to_module_type(mp_desc[2]), + ) + + def contribute_to_path(self, spec, processed): + if spec.location is None: + # Builtin. + return None + + if _is_setuptools_namespace(spec.location): + # extend_path is called, search sys.path for module/packages + # of this name see pkgutil.extend_path documentation + path = [ + os.path.join(p, *processed) + for p in sys.path + if os.path.isdir(os.path.join(p, *processed)) + ] + # We already import distutils elsewhere in astroid, + # so if it is the same module, we can use it directly. + elif spec.name == "distutils" and spec.location in distutils.__path__: + # distutils is patched inside virtualenvs to pick up submodules + # from the original Python, not from the virtualenv itself. + path = list(distutils.__path__) + else: + path = [spec.location] + return path + + +class ExplicitNamespacePackageFinder(ImpFinder): + """A finder for the explicit namespace packages, generated through pkg_resources.""" + + def find_module(self, modname, module_parts, processed, submodule_path): + if processed: + modname = ".".join(processed + [modname]) + if util.is_namespace(modname) and modname in sys.modules: + submodule_path = sys.modules[modname].__path__ + return ModuleSpec( + name=modname, + location="", + origin="namespace", + module_type=ModuleType.PY_NAMESPACE, + submodule_search_locations=submodule_path, + ) + return None + + def contribute_to_path(self, spec, processed): + return spec.submodule_search_locations + + +class ZipFinder(Finder): + """Finder that knows how to find a module inside zip files.""" + + def __init__(self, path): + super(ZipFinder, self).__init__(path) + self._zipimporters = _precache_zipimporters(path) + + def find_module(self, modname, module_parts, processed, submodule_path): + try: + file_type, filename, path = _search_zip(module_parts, self._zipimporters) + except ImportError: + return None + + return ModuleSpec( + name=modname, + location=filename, + origin="egg", + module_type=file_type, + submodule_search_locations=path, + ) + + +class PathSpecFinder(Finder): + """Finder based on importlib.machinery.PathFinder.""" + + def find_module(self, modname, module_parts, processed, submodule_path): + spec = importlib.machinery.PathFinder.find_spec(modname, path=submodule_path) + if spec: + # origin can be either a string on older Python versions + # or None in case it is a namespace package: + # https://github.com/python/cpython/pull/5481 + is_namespace_pkg = spec.origin in ("namespace", None) + location = spec.origin if not is_namespace_pkg else None + module_type = ModuleType.PY_NAMESPACE if is_namespace_pkg else None + spec = ModuleSpec( + name=spec.name, + location=location, + origin=spec.origin, + module_type=module_type, + submodule_search_locations=list(spec.submodule_search_locations or []), + ) + return spec + + def contribute_to_path(self, spec, processed): + if spec.type == ModuleType.PY_NAMESPACE: + return spec.submodule_search_locations + return None + + +_SPEC_FINDERS = (ImpFinder, ZipFinder) +if _HAS_MACHINERY: + _SPEC_FINDERS += (PathSpecFinder,) +_SPEC_FINDERS += (ExplicitNamespacePackageFinder,) + + +def _is_setuptools_namespace(location): + try: + with open(os.path.join(location, "__init__.py"), "rb") as stream: + data = stream.read(4096) + except IOError: + pass + else: + extend_path = b"pkgutil" in data and b"extend_path" in data + declare_namespace = ( + b"pkg_resources" in data and b"declare_namespace(__name__)" in data + ) + return extend_path or declare_namespace + + +@lru_cache() +def _cached_set_diff(left, right): + result = set(left) + result.difference_update(right) + return result + + +def _precache_zipimporters(path=None): + pic = sys.path_importer_cache + + # When measured, despite having the same complexity (O(n)), + # converting to tuples and then caching the conversion to sets + # and the set difference is faster than converting to sets + # and then only caching the set difference. + + req_paths = tuple(path or sys.path) + cached_paths = tuple(pic) + new_paths = _cached_set_diff(req_paths, cached_paths) + for entry_path in new_paths: + try: + pic[entry_path] = zipimport.zipimporter(entry_path) + except zipimport.ZipImportError: + continue + return pic + + +def _search_zip(modpath, pic): + for filepath, importer in list(pic.items()): + if importer is not None: + found = importer.find_module(modpath[0]) + if found: + if not importer.find_module(os.path.sep.join(modpath)): + raise ImportError( + "No module named %s in %s/%s" + % (".".join(modpath[1:]), filepath, modpath) + ) + # import code; code.interact(local=locals()) + return ( + ModuleType.PY_ZIPMODULE, + os.path.abspath(filepath) + os.path.sep + os.path.sep.join(modpath), + filepath, + ) + raise ImportError("No module named %s" % ".".join(modpath)) + + +def _find_spec_with_path(search_path, modname, module_parts, processed, submodule_path): + finders = [finder(search_path) for finder in _SPEC_FINDERS] + for finder in finders: + spec = finder.find_module(modname, module_parts, processed, submodule_path) + if spec is None: + continue + return finder, spec + + raise ImportError("No module named %s" % ".".join(module_parts)) + + +def find_spec(modpath, path=None): + """Find a spec for the given module. + + :type modpath: list or tuple + :param modpath: + split module's name (i.e name of a module or package split + on '.'), with leading empty strings for explicit relative import + + :type path: list or None + :param path: + optional list of path where the module or package should be + searched (use sys.path if nothing or None is given) + + :rtype: ModuleSpec + :return: A module spec, which describes how the module was + found and where. + """ + _path = path or sys.path + + # Need a copy for not mutating the argument. + modpath = modpath[:] + + submodule_path = None + module_parts = modpath[:] + processed = [] + + while modpath: + modname = modpath.pop(0) + finder, spec = _find_spec_with_path( + _path, modname, module_parts, processed, submodule_path or path + ) + processed.append(modname) + if modpath: + submodule_path = finder.contribute_to_path(spec, processed) + + if spec.type == ModuleType.PKG_DIRECTORY: + spec = spec._replace(submodule_search_locations=submodule_path) + + return spec diff --git a/src/main/python/venv/Lib/site-packages/astroid/interpreter/_import/util.py b/src/main/python/venv/Lib/site-packages/astroid/interpreter/_import/util.py new file mode 100644 index 0000000..a917bd3 --- /dev/null +++ b/src/main/python/venv/Lib/site-packages/astroid/interpreter/_import/util.py @@ -0,0 +1,10 @@ +# Copyright (c) 2016, 2018 Claudiu Popa <pcmanticore@gmail.com> + +try: + import pkg_resources +except ImportError: + pkg_resources = None + + +def is_namespace(modname): + return pkg_resources is not None and modname in pkg_resources._namespace_packages diff --git a/src/main/python/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py b/src/main/python/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py new file mode 100644 index 0000000..0ae9bc9 --- /dev/null +++ b/src/main/python/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py @@ -0,0 +1,66 @@ +# Copyright (c) 2016-2018 Claudiu Popa <pcmanticore@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 + +"""Contains logic for retrieving special methods. + +This implementation does not rely on the dot attribute access +logic, found in ``.getattr()``. The difference between these two +is that the dunder methods are looked with the type slots +(you can find more about these here +http://lucumr.pocoo.org/2014/8/16/the-python-i-would-like-to-see/) +As such, the lookup for the special methods is actually simpler than +the dot attribute access. +""" +import itertools + +import astroid +from astroid import exceptions + + +def _lookup_in_mro(node, name): + attrs = node.locals.get(name, []) + + nodes = itertools.chain.from_iterable( + ancestor.locals.get(name, []) for ancestor in node.ancestors(recurs=True) + ) + values = list(itertools.chain(attrs, nodes)) + if not values: + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + return values + + +def lookup(node, name): + """Lookup the given special method name in the given *node* + + If the special method was found, then a list of attributes + will be returned. Otherwise, `astroid.AttributeInferenceError` + is going to be raised. + """ + if isinstance( + node, (astroid.List, astroid.Tuple, astroid.Const, astroid.Dict, astroid.Set) + ): + return _builtin_lookup(node, name) + if isinstance(node, astroid.Instance): + return _lookup_in_mro(node, name) + if isinstance(node, astroid.ClassDef): + return _class_lookup(node, name) + + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + +def _class_lookup(node, name): + metaclass = node.metaclass() + if metaclass is None: + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + return _lookup_in_mro(metaclass, name) + + +def _builtin_lookup(node, name): + values = node.locals.get(name, []) + if not values: + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + return values diff --git a/src/main/python/venv/Lib/site-packages/astroid/interpreter/objectmodel.py b/src/main/python/venv/Lib/site-packages/astroid/interpreter/objectmodel.py new file mode 100644 index 0000000..5e488d9 --- /dev/null +++ b/src/main/python/venv/Lib/site-packages/astroid/interpreter/objectmodel.py @@ -0,0 +1,738 @@ +# Copyright (c) 2016-2018 Claudiu Popa <pcmanticore@gmail.com> +# Copyright (c) 2016 Derek Gustafson <degustaf@gmail.com> +# Copyright (c) 2017-2018 Bryce Guinta <bryce.paul.guinta@gmail.com> +# Copyright (c) 2017 Ceridwen <ceridwenv@gmail.com> +# Copyright (c) 2017 Calen Pennington <cale@edx.org> +# Copyright (c) 2018 Nick Drozd <nicholasdrozd@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 +""" +Data object model, as per https://docs.python.org/3/reference/datamodel.html. + +This module describes, at least partially, a data object model for some +of astroid's nodes. The model contains special attributes that nodes such +as functions, classes, modules etc have, such as __doc__, __class__, +__module__ etc, being used when doing attribute lookups over nodes. + +For instance, inferring `obj.__class__` will first trigger an inference +of the `obj` variable. If it was successfully inferred, then an attribute +`__class__ will be looked for in the inferred object. This is the part +where the data model occurs. The model is attached to those nodes +and the lookup mechanism will try to see if attributes such as +`__class__` are defined by the model or not. If they are defined, +the model will be requested to return the corresponding value of that +attribute. Thus the model can be viewed as a special part of the lookup +mechanism. +""" + +import itertools +import pprint +import os +import types +from functools import lru_cache + +import astroid +from astroid import context as contextmod +from astroid import exceptions +from astroid import node_classes + + +IMPL_PREFIX = "attr_" + + +def _dunder_dict(instance, attributes): + obj = node_classes.Dict(parent=instance) + + # Convert the keys to node strings + keys = [ + node_classes.Const(value=value, parent=obj) for value in list(attributes.keys()) + ] + + # The original attribute has a list of elements for each key, + # but that is not useful for retrieving the special attribute's value. + # In this case, we're picking the last value from each list. + values = [elem[-1] for elem in attributes.values()] + + obj.postinit(list(zip(keys, values))) + return obj + + +class ObjectModel: + def __init__(self): + self._instance = None + + def __repr__(self): + result = [] + cname = type(self).__name__ + string = "%(cname)s(%(fields)s)" + alignment = len(cname) + 1 + for field in sorted(self.attributes()): + width = 80 - len(field) - alignment + lines = pprint.pformat(field, indent=2, width=width).splitlines(True) + + inner = [lines[0]] + for line in lines[1:]: + inner.append(" " * alignment + line) + result.append(field) + + return string % { + "cname": cname, + "fields": (",\n" + " " * alignment).join(result), + } + + def __call__(self, instance): + self._instance = instance + return self + + def __get__(self, instance, cls=None): + # ObjectModel needs to be a descriptor so that just doing + # `special_attributes = SomeObjectModel` should be enough in the body of a node. + # But at the same time, node.special_attributes should return an object + # which can be used for manipulating the special attributes. That's the reason + # we pass the instance through which it got accessed to ObjectModel.__call__, + # returning itself afterwards, so we can still have access to the + # underlying data model and to the instance for which it got accessed. + return self(instance) + + def __contains__(self, name): + return name in self.attributes() + + @lru_cache(maxsize=None) + def attributes(self): + """Get the attributes which are exported by this object model.""" + return [ + obj[len(IMPL_PREFIX) :] for obj in dir(self) if obj.startswith(IMPL_PREFIX) + ] + + def lookup(self, name): + """Look up the given *name* in the current model + + It should return an AST or an interpreter object, + but if the name is not found, then an AttributeInferenceError will be raised. + """ + + if name in self.attributes(): + return getattr(self, IMPL_PREFIX + name) + raise exceptions.AttributeInferenceError(target=self._instance, attribute=name) + + +class ModuleModel(ObjectModel): + def _builtins(self): + builtins_ast_module = astroid.MANAGER.builtins_module + return builtins_ast_module.special_attributes.lookup("__dict__") + + @property + def attr_builtins(self): + return self._builtins() + + @property + def attr___path__(self): + if not self._instance.package: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="__path__" + ) + + path_objs = [ + node_classes.Const( + value=path + if not path.endswith("__init__.py") + else os.path.dirname(path), + parent=self._instance, + ) + for path in self._instance.path + ] + + container = node_classes.List(parent=self._instance) + container.postinit(path_objs) + + return container + + @property + def attr___name__(self): + return node_classes.Const(value=self._instance.name, parent=self._instance) + + @property + def attr___doc__(self): + return node_classes.Const(value=self._instance.doc, parent=self._instance) + + @property + def attr___file__(self): + return node_classes.Const(value=self._instance.file, parent=self._instance) + + @property + def attr___dict__(self): + return _dunder_dict(self._instance, self._instance.globals) + + @property + def attr___package__(self): + if not self._instance.package: + value = "" + else: + value = self._instance.name + + return node_classes.Const(value=value, parent=self._instance) + + # These are related to the Python 3 implementation of the + # import system, + # https://docs.python.org/3/reference/import.html#import-related-module-attributes + + @property + def attr___spec__(self): + # No handling for now. + return node_classes.Unknown() + + @property + def attr___loader__(self): + # No handling for now. + return node_classes.Unknown() + + @property + def attr___cached__(self): + # No handling for now. + return node_classes.Unknown() + + +class FunctionModel(ObjectModel): + @property + def attr___name__(self): + return node_classes.Const(value=self._instance.name, parent=self._instance) + + @property + def attr___doc__(self): + return node_classes.Const(value=self._instance.doc, parent=self._instance) + + @property + def attr___qualname__(self): + return node_classes.Const(value=self._instance.qname(), parent=self._instance) + + @property + def attr___defaults__(self): + func = self._instance + if not func.args.defaults: + return node_classes.Const(value=None, parent=func) + + defaults_obj = node_classes.Tuple(parent=func) + defaults_obj.postinit(func.args.defaults) + return defaults_obj + + @property + def attr___annotations__(self): + obj = node_classes.Dict(parent=self._instance) + + if not self._instance.returns: + returns = None + else: + returns = self._instance.returns + + args = self._instance.args + pair_annotations = itertools.chain( + zip(args.args or [], args.annotations), + zip(args.kwonlyargs, args.kwonlyargs_annotations), + zip(args.posonlyargs or [], args.posonlyargs_annotations), + ) + + annotations = { + arg.name: annotation for (arg, annotation) in pair_annotations if annotation + } + if args.varargannotation: + annotations[args.vararg] = args.varargannotation + if args.kwargannotation: + annotations[args.kwarg] = args.kwargannotation + if returns: + annotations["return"] = returns + + items = [ + (node_classes.Const(key, parent=obj), value) + for (key, value) in annotations.items() + ] + + obj.postinit(items) + return obj + + @property + def attr___dict__(self): + return node_classes.Dict(parent=self._instance) + + attr___globals__ = attr___dict__ + + @property + def attr___kwdefaults__(self): + def _default_args(args, parent): + for arg in args.kwonlyargs: + try: + default = args.default_value(arg.name) + except exceptions.NoDefault: + continue + + name = node_classes.Const(arg.name, parent=parent) + yield name, default + + args = self._instance.args + obj = node_classes.Dict(parent=self._instance) + defaults = dict(_default_args(args, obj)) + + obj.postinit(list(defaults.items())) + return obj + + @property + def attr___module__(self): + return node_classes.Const(self._instance.root().qname()) + + @property + def attr___get__(self): + # pylint: disable=import-outside-toplevel; circular import + from astroid import bases + + func = self._instance + + class DescriptorBoundMethod(bases.BoundMethod): + """Bound method which knows how to understand calling descriptor binding.""" + + def implicit_parameters(self): + # Different than BoundMethod since the signature + # is different. + return 0 + + def infer_call_result(self, caller, context=None): + if len(caller.args) > 2 or len(caller.args) < 1: + raise exceptions.InferenceError( + "Invalid arguments for descriptor binding", + target=self, + context=context, + ) + + context = contextmod.copy_context(context) + cls = next(caller.args[0].infer(context=context)) + + if cls is astroid.Uninferable: + raise exceptions.InferenceError( + "Invalid class inferred", target=self, context=context + ) + + # For some reason func is a Node that the below + # code is not expecting + if isinstance(func, bases.BoundMethod): + yield func + return + + # Rebuild the original value, but with the parent set as the + # class where it will be bound. + new_func = func.__class__( + name=func.name, + doc=func.doc, + lineno=func.lineno, + col_offset=func.col_offset, + parent=cls, + ) + # pylint: disable=no-member + new_func.postinit(func.args, func.body, func.decorators, func.returns) + + # Build a proper bound method that points to our newly built function. + proxy = bases.UnboundMethod(new_func) + yield bases.BoundMethod(proxy=proxy, bound=cls) + + @property + def args(self): + """Overwrite the underlying args to match those of the underlying func + + Usually the underlying *func* is a function/method, as in: + + def test(self): + pass + + This has only the *self* parameter but when we access test.__get__ + we get a new object which has two parameters, *self* and *type*. + """ + nonlocal func + positional_or_keyword_params = func.args.args.copy() + positional_or_keyword_params.append(astroid.AssignName(name="type")) + + positional_only_params = func.args.posonlyargs.copy() + + arguments = astroid.Arguments(parent=func.args.parent) + arguments.postinit( + args=positional_or_keyword_params, + posonlyargs=positional_only_params, + defaults=[], + kwonlyargs=[], + kw_defaults=[], + annotations=[], + ) + return arguments + + return DescriptorBoundMethod(proxy=self._instance, bound=self._instance) + + # These are here just for completion. + @property + def attr___ne__(self): + return node_classes.Unknown() + + attr___subclasshook__ = attr___ne__ + attr___str__ = attr___ne__ + attr___sizeof__ = attr___ne__ + attr___setattr___ = attr___ne__ + attr___repr__ = attr___ne__ + attr___reduce__ = attr___ne__ + attr___reduce_ex__ = attr___ne__ + attr___new__ = attr___ne__ + attr___lt__ = attr___ne__ + attr___eq__ = attr___ne__ + attr___gt__ = attr___ne__ + attr___format__ = attr___ne__ + attr___delattr___ = attr___ne__ + attr___getattribute__ = attr___ne__ + attr___hash__ = attr___ne__ + attr___init__ = attr___ne__ + attr___dir__ = attr___ne__ + attr___call__ = attr___ne__ + attr___class__ = attr___ne__ + attr___closure__ = attr___ne__ + attr___code__ = attr___ne__ + + +class ClassModel(ObjectModel): + @property + def attr___module__(self): + return node_classes.Const(self._instance.root().qname()) + + @property + def attr___name__(self): + return node_classes.Const(self._instance.name) + + @property + def attr___qualname__(self): + return node_classes.Const(self._instance.qname()) + + @property + def attr___doc__(self): + return node_classes.Const(self._instance.doc) + + @property + def attr___mro__(self): + if not self._instance.newstyle: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="__mro__" + ) + + mro = self._instance.mro() + obj = node_classes.Tuple(parent=self._instance) + obj.postinit(mro) + return obj + + @property + def attr_mro(self): + if not self._instance.newstyle: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="mro" + ) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import bases + + other_self = self + + # Cls.mro is a method and we need to return one in order to have a proper inference. + # The method we're returning is capable of inferring the underlying MRO though. + class MroBoundMethod(bases.BoundMethod): + def infer_call_result(self, caller, context=None): + yield other_self.attr___mro__ + + implicit_metaclass = self._instance.implicit_metaclass() + mro_method = implicit_metaclass.locals["mro"][0] + return MroBoundMethod(proxy=mro_method, bound=implicit_metaclass) + + @property + def attr___bases__(self): + obj = node_classes.Tuple() + context = contextmod.InferenceContext() + elts = list(self._instance._inferred_bases(context)) + obj.postinit(elts=elts) + return obj + + @property + def attr___class__(self): + # pylint: disable=import-outside-toplevel; circular import + from astroid import helpers + + return helpers.object_type(self._instance) + + @property + def attr___subclasses__(self): + """Get the subclasses of the underlying class + + This looks only in the current module for retrieving the subclasses, + thus it might miss a couple of them. + """ + # pylint: disable=import-outside-toplevel; circular import + from astroid import bases + from astroid import scoped_nodes + + if not self._instance.newstyle: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="__subclasses__" + ) + + qname = self._instance.qname() + root = self._instance.root() + classes = [ + cls + for cls in root.nodes_of_class(scoped_nodes.ClassDef) + if cls != self._instance and cls.is_subtype_of(qname) + ] + + obj = node_classes.List(parent=self._instance) + obj.postinit(classes) + + class SubclassesBoundMethod(bases.BoundMethod): + def infer_call_result(self, caller, context=None): + yield obj + + implicit_metaclass = self._instance.implicit_metaclass() + subclasses_method = implicit_metaclass.locals["__subclasses__"][0] + return SubclassesBoundMethod(proxy=subclasses_method, bound=implicit_metaclass) + + @property + def attr___dict__(self): + return node_classes.Dict(parent=self._instance) + + +class SuperModel(ObjectModel): + @property + def attr___thisclass__(self): + return self._instance.mro_pointer + + @property + def attr___self_class__(self): + return self._instance._self_class + + @property + def attr___self__(self): + return self._instance.type + + @property + def attr___class__(self): + return self._instance._proxied + + +class UnboundMethodModel(ObjectModel): + @property + def attr___class__(self): + # pylint: disable=import-outside-toplevel; circular import + from astroid import helpers + + return helpers.object_type(self._instance) + + @property + def attr___func__(self): + return self._instance._proxied + + @property + def attr___self__(self): + return node_classes.Const(value=None, parent=self._instance) + + attr_im_func = attr___func__ + attr_im_class = attr___class__ + attr_im_self = attr___self__ + + +class BoundMethodModel(FunctionModel): + @property + def attr___func__(self): + return self._instance._proxied._proxied + + @property + def attr___self__(self): + return self._instance.bound + + +class GeneratorModel(FunctionModel): + def __new__(cls, *args, **kwargs): + # Append the values from the GeneratorType unto this object. + ret = super(GeneratorModel, cls).__new__(cls, *args, **kwargs) + generator = astroid.MANAGER.builtins_module["generator"] + for name, values in generator.locals.items(): + method = values[0] + patched = lambda cls, meth=method: meth + + setattr(type(ret), IMPL_PREFIX + name, property(patched)) + + return ret + + @property + def attr___name__(self): + return node_classes.Const( + value=self._instance.parent.name, parent=self._instance + ) + + @property + def attr___doc__(self): + return node_classes.Const( + value=self._instance.parent.doc, parent=self._instance + ) + + +class AsyncGeneratorModel(GeneratorModel): + def __new__(cls, *args, **kwargs): + # Append the values from the AGeneratorType unto this object. + ret = super().__new__(cls, *args, **kwargs) + astroid_builtins = astroid.MANAGER.builtins_module + generator = astroid_builtins.get("async_generator") + if generator is None: + # Make it backward compatible. + generator = astroid_builtins.get("generator") + + for name, values in generator.locals.items(): + method = values[0] + patched = lambda cls, meth=method: meth + + setattr(type(ret), IMPL_PREFIX + name, property(patched)) + + return ret + + +class InstanceModel(ObjectModel): + @property + def attr___class__(self): + return self._instance._proxied + + @property + def attr___module__(self): + return node_classes.Const(self._instance.root().qname()) + + @property + def attr___doc__(self): + return node_classes.Const(self._instance.doc) + + @property + def attr___dict__(self): + return _dunder_dict(self._instance, self._instance.instance_attrs) + + +# Exception instances + + +class ExceptionInstanceModel(InstanceModel): + @property + def attr_args(self): + message = node_classes.Const("") + args = node_classes.Tuple(parent=self._instance) + args.postinit((message,)) + return args + + @property + def attr___traceback__(self): + builtins_ast_module = astroid.MANAGER.builtins_module + traceback_type = builtins_ast_module[types.TracebackType.__name__] + return traceback_type.instantiate_class() + + +class SyntaxErrorInstanceModel(ExceptionInstanceModel): + @property + def attr_text(self): + return node_classes.Const("") + + +class OSErrorInstanceModel(ExceptionInstanceModel): + @property + def attr_filename(self): + return node_classes.Const("") + + @property + def attr_errno(self): + return node_classes.Const(0) + + @property + def attr_strerror(self): + return node_classes.Const("") + + attr_filename2 = attr_filename + + +class ImportErrorInstanceModel(ExceptionInstanceModel): + @property + def attr_name(self): + return node_classes.Const("") + + @property + def attr_path(self): + return node_classes.Const("") + + +BUILTIN_EXCEPTIONS = { + "builtins.SyntaxError": SyntaxErrorInstanceModel, + "builtins.ImportError": ImportErrorInstanceModel, + # These are all similar to OSError in terms of attributes + "builtins.OSError": OSErrorInstanceModel, + "builtins.BlockingIOError": OSErrorInstanceModel, + "builtins.BrokenPipeError": OSErrorInstanceModel, + "builtins.ChildProcessError": OSErrorInstanceModel, + "builtins.ConnectionAbortedError": OSErrorInstanceModel, + "builtins.ConnectionError": OSErrorInstanceModel, + "builtins.ConnectionRefusedError": OSErrorInstanceModel, + "builtins.ConnectionResetError": OSErrorInstanceModel, + "builtins.FileExistsError": OSErrorInstanceModel, + "builtins.FileNotFoundError": OSErrorInstanceModel, + "builtins.InterruptedError": OSErrorInstanceModel, + "builtins.IsADirectoryError": OSErrorInstanceModel, + "builtins.NotADirectoryError": OSErrorInstanceModel, + "builtins.PermissionError": OSErrorInstanceModel, + "builtins.ProcessLookupError": OSErrorInstanceModel, + "builtins.TimeoutError": OSErrorInstanceModel, +} + + +class DictModel(ObjectModel): + @property + def attr___class__(self): + return self._instance._proxied + + def _generic_dict_attribute(self, obj, name): + """Generate a bound method that can infer the given *obj*.""" + + class DictMethodBoundMethod(astroid.BoundMethod): + def infer_call_result(self, caller, context=None): + yield obj + + meth = next(self._instance._proxied.igetattr(name)) + return DictMethodBoundMethod(proxy=meth, bound=self._instance) + + @property + def attr_items(self): + elems = [] + obj = node_classes.List(parent=self._instance) + for key, value in self._instance.items: + elem = node_classes.Tuple(parent=obj) + elem.postinit((key, value)) + elems.append(elem) + obj.postinit(elts=elems) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import objects + + obj = objects.DictItems(obj) + return self._generic_dict_attribute(obj, "items") + + @property + def attr_keys(self): + keys = [key for (key, _) in self._instance.items] + obj = node_classes.List(parent=self._instance) + obj.postinit(elts=keys) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import objects + + obj = objects.DictKeys(obj) + return self._generic_dict_attribute(obj, "keys") + + @property + def attr_values(self): + + values = [value for (_, value) in self._instance.items] + obj = node_classes.List(parent=self._instance) + obj.postinit(values) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import objects + + obj = objects.DictValues(obj) + return self._generic_dict_attribute(obj, "values") |