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Unified Diff: third_party/logilab/logilab/astroid/inspector.py

Issue 1920403002: [content/test/gpu] Run pylint check of gpu tests in unittest instead of PRESUBMIT (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Update path to LICENSE.txt of logilab/README.chromium Created 4 years, 7 months ago
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Index: third_party/logilab/logilab/astroid/inspector.py
diff --git a/third_party/logilab/logilab/astroid/inspector.py b/third_party/logilab/logilab/astroid/inspector.py
new file mode 100644
index 0000000000000000000000000000000000000000..1fc319260ed9df28448be6aebffd3e3ec83b46fc
--- /dev/null
+++ b/third_party/logilab/logilab/astroid/inspector.py
@@ -0,0 +1,273 @@
+# copyright 2003-2013 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of astroid.
+#
+# astroid is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by the
+# Free Software Foundation, either version 2.1 of the License, or (at your
+# option) any later version.
+#
+# astroid is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+# for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with astroid. If not, see <http://www.gnu.org/licenses/>.
+"""visitor doing some postprocessing on the astroid tree.
+Try to resolve definitions (namespace) dictionary, relationship...
+
+This module has been imported from pyreverse
+"""
+
+__docformat__ = "restructuredtext en"
+
+from os.path import dirname
+
+import astroid
+from astroid.exceptions import InferenceError
+from astroid.utils import LocalsVisitor
+from astroid.modutils import get_module_part, is_relative, is_standard_module
+
+class IdGeneratorMixIn(object):
+ """
+ Mixin adding the ability to generate integer uid
+ """
+ def __init__(self, start_value=0):
+ self.id_count = start_value
+
+ def init_counter(self, start_value=0):
+ """init the id counter
+ """
+ self.id_count = start_value
+
+ def generate_id(self):
+ """generate a new identifier
+ """
+ self.id_count += 1
+ return self.id_count
+
+
+class Linker(IdGeneratorMixIn, LocalsVisitor):
+ """
+ walk on the project tree and resolve relationships.
+
+ According to options the following attributes may be added to visited nodes:
+
+ * uid,
+ a unique identifier for the node (on astroid.Project, astroid.Module,
+ astroid.Class and astroid.locals_type). Only if the linker has been instantiated
+ with tag=True parameter (False by default).
+
+ * Function
+ a mapping from locals names to their bounded value, which may be a
+ constant like a string or an integer, or an astroid node (on astroid.Module,
+ astroid.Class and astroid.Function).
+
+ * instance_attrs_type
+ as locals_type but for klass member attributes (only on astroid.Class)
+
+ * implements,
+ list of implemented interface _objects_ (only on astroid.Class nodes)
+ """
+
+ def __init__(self, project, inherited_interfaces=0, tag=False):
+ IdGeneratorMixIn.__init__(self)
+ LocalsVisitor.__init__(self)
+ # take inherited interface in consideration or not
+ self.inherited_interfaces = inherited_interfaces
+ # tag nodes or not
+ self.tag = tag
+ # visited project
+ self.project = project
+
+
+ def visit_project(self, node):
+ """visit an astroid.Project node
+
+ * optionally tag the node with a unique id
+ """
+ if self.tag:
+ node.uid = self.generate_id()
+ for module in node.modules:
+ self.visit(module)
+
+ def visit_package(self, node):
+ """visit an astroid.Package node
+
+ * optionally tag the node with a unique id
+ """
+ if self.tag:
+ node.uid = self.generate_id()
+ for subelmt in node.values():
+ self.visit(subelmt)
+
+ def visit_module(self, node):
+ """visit an astroid.Module node
+
+ * set the locals_type mapping
+ * set the depends mapping
+ * optionally tag the node with a unique id
+ """
+ if hasattr(node, 'locals_type'):
+ return
+ node.locals_type = {}
+ node.depends = []
+ if self.tag:
+ node.uid = self.generate_id()
+
+ def visit_class(self, node):
+ """visit an astroid.Class node
+
+ * set the locals_type and instance_attrs_type mappings
+ * set the implements list and build it
+ * optionally tag the node with a unique id
+ """
+ if hasattr(node, 'locals_type'):
+ return
+ node.locals_type = {}
+ if self.tag:
+ node.uid = self.generate_id()
+ # resolve ancestors
+ for baseobj in node.ancestors(recurs=False):
+ specializations = getattr(baseobj, 'specializations', [])
+ specializations.append(node)
+ baseobj.specializations = specializations
+ # resolve instance attributes
+ node.instance_attrs_type = {}
+ for assattrs in node.instance_attrs.values():
+ for assattr in assattrs:
+ self.handle_assattr_type(assattr, node)
+ # resolve implemented interface
+ try:
+ node.implements = list(node.interfaces(self.inherited_interfaces))
+ except InferenceError:
+ node.implements = ()
+
+ def visit_function(self, node):
+ """visit an astroid.Function node
+
+ * set the locals_type mapping
+ * optionally tag the node with a unique id
+ """
+ if hasattr(node, 'locals_type'):
+ return
+ node.locals_type = {}
+ if self.tag:
+ node.uid = self.generate_id()
+
+ link_project = visit_project
+ link_module = visit_module
+ link_class = visit_class
+ link_function = visit_function
+
+ def visit_assname(self, node):
+ """visit an astroid.AssName node
+
+ handle locals_type
+ """
+ # avoid double parsing done by different Linkers.visit
+ # running over the same project:
+ if hasattr(node, '_handled'):
+ return
+ node._handled = True
+ if node.name in node.frame():
+ frame = node.frame()
+ else:
+ # the name has been defined as 'global' in the frame and belongs
+ # there. Btw the frame is not yet visited as the name is in the
+ # root locals; the frame hence has no locals_type attribute
+ frame = node.root()
+ try:
+ values = node.infered()
+ try:
+ already_infered = frame.locals_type[node.name]
+ for valnode in values:
+ if not valnode in already_infered:
+ already_infered.append(valnode)
+ except KeyError:
+ frame.locals_type[node.name] = values
+ except astroid.InferenceError:
+ pass
+
+ def handle_assattr_type(self, node, parent):
+ """handle an astroid.AssAttr node
+
+ handle instance_attrs_type
+ """
+ try:
+ values = list(node.infer())
+ try:
+ already_infered = parent.instance_attrs_type[node.attrname]
+ for valnode in values:
+ if not valnode in already_infered:
+ already_infered.append(valnode)
+ except KeyError:
+ parent.instance_attrs_type[node.attrname] = values
+ except astroid.InferenceError:
+ pass
+
+ def visit_import(self, node):
+ """visit an astroid.Import node
+
+ resolve module dependencies
+ """
+ context_file = node.root().file
+ for name in node.names:
+ relative = is_relative(name[0], context_file)
+ self._imported_module(node, name[0], relative)
+
+
+ def visit_from(self, node):
+ """visit an astroid.From node
+
+ resolve module dependencies
+ """
+ basename = node.modname
+ context_file = node.root().file
+ if context_file is not None:
+ relative = is_relative(basename, context_file)
+ else:
+ relative = False
+ for name in node.names:
+ if name[0] == '*':
+ continue
+ # analyze dependencies
+ fullname = '%s.%s' % (basename, name[0])
+ if fullname.find('.') > -1:
+ try:
+ # XXX: don't use get_module_part, missing package precedence
+ fullname = get_module_part(fullname, context_file)
+ except ImportError:
+ continue
+ if fullname != basename:
+ self._imported_module(node, fullname, relative)
+
+
+ def compute_module(self, context_name, mod_path):
+ """return true if the module should be added to dependencies"""
+ package_dir = dirname(self.project.path)
+ if context_name == mod_path:
+ return 0
+ elif is_standard_module(mod_path, (package_dir,)):
+ return 1
+ return 0
+
+ # protected methods ########################################################
+
+ def _imported_module(self, node, mod_path, relative):
+ """notify an imported module, used to analyze dependencies
+ """
+ module = node.root()
+ context_name = module.name
+ if relative:
+ mod_path = '%s.%s' % ('.'.join(context_name.split('.')[:-1]),
+ mod_path)
+ if self.compute_module(context_name, mod_path):
+ # handle dependencies
+ if not hasattr(module, 'depends'):
+ module.depends = []
+ mod_paths = module.depends
+ if not mod_path in mod_paths:
+ mod_paths.append(mod_path)
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