"""Fix incompatible renames Fixes: * sys.maxint -> sys.maxsize """ # Author: Christian Heimes # based on Collin Winter's fix_import # Local imports from .. import fixer_base from ..fixer_util import Name, attr_chain MAPPING = {"sys": {"maxint" : "maxsize"}, } LOOKUP = {} def alternates(members): return "(" + "|".join(map(repr, members)) + ")" def build_pattern(): #bare = set() for module, replace in list(MAPPING.items()): for old_attr, new_attr in list(replace.items()): LOOKUP[(module, old_attr)] = new_attr #bare.add(module) #bare.add(old_attr) #yield """ # import_name< 'import' (module=%r # | dotted_as_names< any* module=%r any* >) > # """ % (module, module) yield """ import_from< 'from' module_name=%r 'import' ( attr_name=%r | import_as_name< attr_name=%r 'as' any >) > """ % (module, old_attr, old_attr) yield """ power< module_name=%r trailer< '.' attr_name=%r > any* > """ % (module, old_attr) #yield """bare_name=%s""" % alternates(bare) class FixRenames(fixer_base.BaseFix): BM_compatible = True PATTERN = "|".join(build_pattern()) order = "pre" # Pre-order tree traversal # Don't match the node if it's within another match def match(self, node): match = super(FixRenames, self).match results = match(node) if results: if any(match(obj) for obj in attr_chain(node, "parent")): return False return results return False #def start_tree(self, tree, filename): # super(FixRenames, self).start_tree(tree, filename) # self.replace = {} def transform(self, node, results): mod_name = results.get("module_name") attr_name = results.get("attr_name") #bare_name = results.get("bare_name") #import_mod = results.get("module") if mod_name and attr_name: new_attr = LOOKUP[(mod_name.value, attr_name.value)] attr_name.replace(Name(new_attr, prefix=attr_name.prefix))