| """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 MAPPING.items(): |
| for old_attr, new_attr in 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 = unicode(LOOKUP[(mod_name.value, attr_name.value)]) |
| attr_name.replace(Name(new_attr, prefix=attr_name.prefix)) |
