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