| |
| from pychecker2.Check import Check |
| from pychecker2.Warning import Warning |
| from pychecker2 import util |
| |
| from compiler.ast import * |
| |
| class RedefineCheck(Check): |
| redefinedScope = Warning('Report redefined scopes', |
| 'Scope (%s) is redefined at line %d') |
| |
| def check(self, file, unused_checker): |
| names = {} # map name, parent to this scope |
| for node, scope in file.scopes.items(): |
| if hasattr(node, 'name'): # classes, functions |
| key = (scope.parent, node.name) |
| if names.has_key(key): |
| # oops, another scope has the same name and parent |
| first = node |
| second = names[key] |
| # but don't warn if the parent node is the same If or Try |
| if util.try_if_exclusive(first, second): |
| continue |
| if first.lineno > second.lineno: |
| second, first = first, second |
| file.warning(first, self.redefinedScope, |
| first.name, second.lineno) |
| names[key] = node |
