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

Issue 719313003: Revert "pylint: upgrade to 1.3.1" (Closed) Base URL: https://chromium.googlesource.com/chromium/tools/depot_tools.git@master
Patch Set: Created 6 years, 1 month ago
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Index: third_party/logilab/astroid/utils.py
diff --git a/third_party/logilab/astroid/utils.py b/third_party/logilab/astroid/utils.py
deleted file mode 100644
index 936c8b5a833b274e7b1bc4bb05cd71f4880e1a17..0000000000000000000000000000000000000000
--- a/third_party/logilab/astroid/utils.py
+++ /dev/null
@@ -1,238 +0,0 @@
-# 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/>.
-"""this module contains some utilities to navigate in the tree or to
-extract information from it
-"""
-
-__docformat__ = "restructuredtext en"
-
-from astroid.exceptions import AstroidBuildingException
-from astroid.builder import parse
-
-
-class ASTWalker(object):
- """a walker visiting a tree in preorder, calling on the handler:
-
- * visit_<class name> on entering a node, where class name is the class of
- the node in lower case
-
- * leave_<class name> on leaving a node, where class name is the class of
- the node in lower case
- """
-
- def __init__(self, handler):
- self.handler = handler
- self._cache = {}
-
- def walk(self, node, _done=None):
- """walk on the tree from <node>, getting callbacks from handler"""
- if _done is None:
- _done = set()
- if node in _done:
- raise AssertionError((id(node), node, node.parent))
- _done.add(node)
- self.visit(node)
- for child_node in node.get_children():
- self.handler.set_context(node, child_node)
- assert child_node is not node
- self.walk(child_node, _done)
- self.leave(node)
- assert node.parent is not node
-
- def get_callbacks(self, node):
- """get callbacks from handler for the visited node"""
- klass = node.__class__
- methods = self._cache.get(klass)
- if methods is None:
- handler = self.handler
- kid = klass.__name__.lower()
- e_method = getattr(handler, 'visit_%s' % kid,
- getattr(handler, 'visit_default', None))
- l_method = getattr(handler, 'leave_%s' % kid,
- getattr(handler, 'leave_default', None))
- self._cache[klass] = (e_method, l_method)
- else:
- e_method, l_method = methods
- return e_method, l_method
-
- def visit(self, node):
- """walk on the tree from <node>, getting callbacks from handler"""
- method = self.get_callbacks(node)[0]
- if method is not None:
- method(node)
-
- def leave(self, node):
- """walk on the tree from <node>, getting callbacks from handler"""
- method = self.get_callbacks(node)[1]
- if method is not None:
- method(node)
-
-
-class LocalsVisitor(ASTWalker):
- """visit a project by traversing the locals dictionary"""
- def __init__(self):
- ASTWalker.__init__(self, self)
- self._visited = {}
-
- def visit(self, node):
- """launch the visit starting from the given node"""
- if node in self._visited:
- return
- self._visited[node] = 1 # FIXME: use set ?
- methods = self.get_callbacks(node)
- if methods[0] is not None:
- methods[0](node)
- if 'locals' in node.__dict__: # skip Instance and other proxy
- for local_node in node.values():
- self.visit(local_node)
- if methods[1] is not None:
- return methods[1](node)
-
-
-def _check_children(node):
- """a helper function to check children - parent relations"""
- for child in node.get_children():
- ok = False
- if child is None:
- print "Hm, child of %s is None" % node
- continue
- if not hasattr(child, 'parent'):
- print " ERROR: %s has child %s %x with no parent" % (
- node, child, id(child))
- elif not child.parent:
- print " ERROR: %s has child %s %x with parent %r" % (
- node, child, id(child), child.parent)
- elif child.parent is not node:
- print " ERROR: %s %x has child %s %x with wrong parent %s" % (
- node, id(node), child, id(child), child.parent)
- else:
- ok = True
- if not ok:
- print "lines;", node.lineno, child.lineno
- print "of module", node.root(), node.root().name
- raise AstroidBuildingException
- _check_children(child)
-
-
-class TreeTester(object):
- '''A helper class to see _ast tree and compare with astroid tree
-
- indent: string for tree indent representation
- lineno: bool to tell if we should print the line numbers
-
- >>> tester = TreeTester('print')
- >>> print tester.native_tree_repr()
-
- <Module>
- . body = [
- . <Print>
- . . nl = True
- . ]
- >>> print tester.astroid_tree_repr()
- Module()
- body = [
- Print()
- dest =
- values = [
- ]
- ]
- '''
-
- indent = '. '
- lineno = False
-
- def __init__(self, sourcecode):
- self._string = ''
- self.sourcecode = sourcecode
- self._ast_node = None
- self.build_ast()
-
- def build_ast(self):
- """build the _ast tree from the source code"""
- self._ast_node = parse(self.sourcecode)
-
- def native_tree_repr(self, node=None, indent=''):
- """get a nice representation of the _ast tree"""
- self._string = ''
- if node is None:
- node = self._ast_node
- self._native_repr_tree(node, indent)
- return self._string
-
-
- def _native_repr_tree(self, node, indent, _done=None):
- """recursive method for the native tree representation"""
- from _ast import Load as _Load, Store as _Store, Del as _Del
- from _ast import AST as Node
- if _done is None:
- _done = set()
- if node in _done:
- self._string += '\nloop in tree: %r (%s)' % (
- node, getattr(node, 'lineno', None))
- return
- _done.add(node)
- self._string += '\n' + indent + '<%s>' % node.__class__.__name__
- indent += self.indent
- if not hasattr(node, '__dict__'):
- self._string += '\n' + self.indent + " ** node has no __dict__ " + str(node)
- return
- node_dict = node.__dict__
- if hasattr(node, '_attributes'):
- for a in node._attributes:
- attr = node_dict[a]
- if attr is None:
- continue
- if a in ("lineno", "col_offset") and not self.lineno:
- continue
- self._string += '\n' + indent + a + " = " + repr(attr)
- for field in node._fields or ():
- attr = node_dict[field]
- if attr is None:
- continue
- if isinstance(attr, list):
- if not attr:
- continue
- self._string += '\n' + indent + field + ' = ['
- for elt in attr:
- self._native_repr_tree(elt, indent, _done)
- self._string += '\n' + indent + ']'
- continue
- if isinstance(attr, (_Load, _Store, _Del)):
- continue
- if isinstance(attr, Node):
- self._string += '\n' + indent + field + " = "
- self._native_repr_tree(attr, indent, _done)
- else:
- self._string += '\n' + indent + field + " = " + repr(attr)
-
-
- def build_astroid_tree(self):
- """build astroid tree from the _ast tree
- """
- from astroid.builder import AstroidBuilder
- tree = AstroidBuilder().string_build(self.sourcecode)
- return tree
-
- def astroid_tree_repr(self, ids=False):
- """build the astroid tree and return a nice tree representation"""
- mod = self.build_astroid_tree()
- return mod.repr_tree(ids)
-
-
-__all__ = ('LocalsVisitor', 'ASTWalker',)
-
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