| 4710c53d |
1 | """Fix incompatible renames\r |
| 2 | \r |
| 3 | Fixes:\r |
| 4 | * sys.maxint -> sys.maxsize\r |
| 5 | """\r |
| 6 | # Author: Christian Heimes\r |
| 7 | # based on Collin Winter's fix_import\r |
| 8 | \r |
| 9 | # Local imports\r |
| 10 | from .. import fixer_base\r |
| 11 | from ..fixer_util import Name, attr_chain\r |
| 12 | \r |
| 13 | MAPPING = {"sys": {"maxint" : "maxsize"},\r |
| 14 | }\r |
| 15 | LOOKUP = {}\r |
| 16 | \r |
| 17 | def alternates(members):\r |
| 18 | return "(" + "|".join(map(repr, members)) + ")"\r |
| 19 | \r |
| 20 | \r |
| 21 | def build_pattern():\r |
| 22 | #bare = set()\r |
| 23 | for module, replace in MAPPING.items():\r |
| 24 | for old_attr, new_attr in replace.items():\r |
| 25 | LOOKUP[(module, old_attr)] = new_attr\r |
| 26 | #bare.add(module)\r |
| 27 | #bare.add(old_attr)\r |
| 28 | #yield """\r |
| 29 | # import_name< 'import' (module=%r\r |
| 30 | # | dotted_as_names< any* module=%r any* >) >\r |
| 31 | # """ % (module, module)\r |
| 32 | yield """\r |
| 33 | import_from< 'from' module_name=%r 'import'\r |
| 34 | ( attr_name=%r | import_as_name< attr_name=%r 'as' any >) >\r |
| 35 | """ % (module, old_attr, old_attr)\r |
| 36 | yield """\r |
| 37 | power< module_name=%r trailer< '.' attr_name=%r > any* >\r |
| 38 | """ % (module, old_attr)\r |
| 39 | #yield """bare_name=%s""" % alternates(bare)\r |
| 40 | \r |
| 41 | \r |
| 42 | class FixRenames(fixer_base.BaseFix):\r |
| 43 | BM_compatible = True\r |
| 44 | PATTERN = "|".join(build_pattern())\r |
| 45 | \r |
| 46 | order = "pre" # Pre-order tree traversal\r |
| 47 | \r |
| 48 | # Don't match the node if it's within another match\r |
| 49 | def match(self, node):\r |
| 50 | match = super(FixRenames, self).match\r |
| 51 | results = match(node)\r |
| 52 | if results:\r |
| 53 | if any(match(obj) for obj in attr_chain(node, "parent")):\r |
| 54 | return False\r |
| 55 | return results\r |
| 56 | return False\r |
| 57 | \r |
| 58 | #def start_tree(self, tree, filename):\r |
| 59 | # super(FixRenames, self).start_tree(tree, filename)\r |
| 60 | # self.replace = {}\r |
| 61 | \r |
| 62 | def transform(self, node, results):\r |
| 63 | mod_name = results.get("module_name")\r |
| 64 | attr_name = results.get("attr_name")\r |
| 65 | #bare_name = results.get("bare_name")\r |
| 66 | #import_mod = results.get("module")\r |
| 67 | \r |
| 68 | if mod_name and attr_name:\r |
| 69 | new_attr = unicode(LOOKUP[(mod_name.value, attr_name.value)])\r |
| 70 | attr_name.replace(Name(new_attr, prefix=attr_name.prefix))\r |
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