146 lines
5.6 KiB
Python
146 lines
5.6 KiB
Python
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"""Fix incompatible imports and module references."""
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# Authors: Collin Winter, Nick Edds
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# Local imports
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from .. import fixer_base
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from ..fixer_util import Name, attr_chain
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MAPPING = {'StringIO': 'io',
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'cStringIO': 'io',
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'cPickle': 'pickle',
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'__builtin__' : 'builtins',
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'copy_reg': 'copyreg',
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'Queue': 'queue',
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'SocketServer': 'socketserver',
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'ConfigParser': 'configparser',
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'repr': 'reprlib',
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'FileDialog': 'tkinter.filedialog',
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'tkFileDialog': 'tkinter.filedialog',
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'SimpleDialog': 'tkinter.simpledialog',
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'tkSimpleDialog': 'tkinter.simpledialog',
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'tkColorChooser': 'tkinter.colorchooser',
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'tkCommonDialog': 'tkinter.commondialog',
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'Dialog': 'tkinter.dialog',
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'Tkdnd': 'tkinter.dnd',
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'tkFont': 'tkinter.font',
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'tkMessageBox': 'tkinter.messagebox',
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'ScrolledText': 'tkinter.scrolledtext',
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'Tkconstants': 'tkinter.constants',
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'Tix': 'tkinter.tix',
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'ttk': 'tkinter.ttk',
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'Tkinter': 'tkinter',
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'markupbase': '_markupbase',
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'_winreg': 'winreg',
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'thread': '_thread',
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'dummy_thread': '_dummy_thread',
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# anydbm and whichdb are handled by fix_imports2
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'dbhash': 'dbm.bsd',
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'dumbdbm': 'dbm.dumb',
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'dbm': 'dbm.ndbm',
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'gdbm': 'dbm.gnu',
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'xmlrpclib': 'xmlrpc.client',
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'DocXMLRPCServer': 'xmlrpc.server',
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'SimpleXMLRPCServer': 'xmlrpc.server',
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'httplib': 'http.client',
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'htmlentitydefs' : 'html.entities',
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'HTMLParser' : 'html.parser',
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'Cookie': 'http.cookies',
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'cookielib': 'http.cookiejar',
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'BaseHTTPServer': 'http.server',
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'SimpleHTTPServer': 'http.server',
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'CGIHTTPServer': 'http.server',
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#'test.test_support': 'test.support',
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'commands': 'subprocess',
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'UserString' : 'collections',
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'UserList' : 'collections',
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'urlparse' : 'urllib.parse',
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'robotparser' : 'urllib.robotparser',
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}
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def alternates(members):
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return "(" + "|".join(map(repr, members)) + ")"
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def build_pattern(mapping=MAPPING):
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mod_list = ' | '.join(["module_name='%s'" % key for key in mapping])
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bare_names = alternates(mapping.keys())
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yield """name_import=import_name< 'import' ((%s) |
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multiple_imports=dotted_as_names< any* (%s) any* >) >
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""" % (mod_list, mod_list)
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yield """import_from< 'from' (%s) 'import' ['(']
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( any | import_as_name< any 'as' any > |
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import_as_names< any* >) [')'] >
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""" % mod_list
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yield """import_name< 'import' (dotted_as_name< (%s) 'as' any > |
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multiple_imports=dotted_as_names<
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any* dotted_as_name< (%s) 'as' any > any* >) >
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""" % (mod_list, mod_list)
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# Find usages of module members in code e.g. thread.foo(bar)
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yield "power< bare_with_attr=(%s) trailer<'.' any > any* >" % bare_names
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class FixImports(fixer_base.BaseFix):
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BM_compatible = True
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keep_line_order = True
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# This is overridden in fix_imports2.
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mapping = MAPPING
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# We want to run this fixer late, so fix_import doesn't try to make stdlib
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# renames into relative imports.
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run_order = 6
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def build_pattern(self):
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return "|".join(build_pattern(self.mapping))
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def compile_pattern(self):
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# We override this, so MAPPING can be pragmatically altered and the
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# changes will be reflected in PATTERN.
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self.PATTERN = self.build_pattern()
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super(FixImports, self).compile_pattern()
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# Don't match the node if it's within another match.
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def match(self, node):
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match = super(FixImports, self).match
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results = match(node)
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if results:
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# Module usage could be in the trailer of an attribute lookup, so we
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# might have nested matches when "bare_with_attr" is present.
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if "bare_with_attr" not in results and \
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any(match(obj) for obj in attr_chain(node, "parent")):
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return False
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return results
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return False
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def start_tree(self, tree, filename):
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super(FixImports, self).start_tree(tree, filename)
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self.replace = {}
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def transform(self, node, results):
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import_mod = results.get("module_name")
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if import_mod:
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mod_name = import_mod.value
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new_name = self.mapping[mod_name]
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import_mod.replace(Name(new_name, prefix=import_mod.prefix))
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if "name_import" in results:
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# If it's not a "from x import x, y" or "import x as y" import,
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# marked its usage to be replaced.
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self.replace[mod_name] = new_name
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if "multiple_imports" in results:
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# This is a nasty hack to fix multiple imports on a line (e.g.,
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# "import StringIO, urlparse"). The problem is that I can't
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# figure out an easy way to make a pattern recognize the keys of
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# MAPPING randomly sprinkled in an import statement.
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results = self.match(node)
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if results:
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self.transform(node, results)
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else:
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# Replace usage of the module.
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bare_name = results["bare_with_attr"][0]
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new_name = self.replace.get(bare_name.value)
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if new_name:
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bare_name.replace(Name(new_name, prefix=bare_name.prefix))
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