cpython/Lib/lib2to3/fixes/fix_callable.py

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# Copyright 2007 Google, Inc. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.
"""Fixer for callable().
Merged revisions 76871-76872,77093-77095,77097-77101 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r76871 | benjamin.peterson | 2009-12-17 20:49:21 -0600 (Thu, 17 Dec 2009) | 1 line handle unencodable diffs gracefully #5093 ........ r76872 | benjamin.peterson | 2009-12-17 20:51:37 -0600 (Thu, 17 Dec 2009) | 1 line fix emacs header ........ r77093 | benjamin.peterson | 2009-12-28 14:43:32 -0600 (Mon, 28 Dec 2009) | 7 lines replace callable(x) with isinstance(x, collections.Callable) #7006 This is a more accurate translation than hasattr(x, '__call__') which failed in the case that somebody had put __call__ in the instance dictionary. Patch mostly by Joe Amenta. ........ r77094 | benjamin.peterson | 2009-12-28 14:45:13 -0600 (Mon, 28 Dec 2009) | 2 lines deuglify imports ........ r77095 | benjamin.peterson | 2009-12-28 14:49:23 -0600 (Mon, 28 Dec 2009) | 1 line remove unused flag ........ r77097 | benjamin.peterson | 2009-12-28 16:12:13 -0600 (Mon, 28 Dec 2009) | 2 lines clean up imports and whitespace ........ r77098 | benjamin.peterson | 2009-12-28 16:43:35 -0600 (Mon, 28 Dec 2009) | 1 line *** empty log message *** ........ r77099 | benjamin.peterson | 2009-12-28 16:45:10 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended change ........ r77100 | benjamin.peterson | 2009-12-28 16:53:21 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended changes ........ r77101 | benjamin.peterson | 2009-12-28 17:46:02 -0600 (Mon, 28 Dec 2009) | 1 line normalize whitespace ........
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This converts callable(obj) into isinstance(obj, collections.Callable), adding a
collections import if needed."""
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# Local imports
Merged revisions 76871-76872,77093-77095,77097-77101 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r76871 | benjamin.peterson | 2009-12-17 20:49:21 -0600 (Thu, 17 Dec 2009) | 1 line handle unencodable diffs gracefully #5093 ........ r76872 | benjamin.peterson | 2009-12-17 20:51:37 -0600 (Thu, 17 Dec 2009) | 1 line fix emacs header ........ r77093 | benjamin.peterson | 2009-12-28 14:43:32 -0600 (Mon, 28 Dec 2009) | 7 lines replace callable(x) with isinstance(x, collections.Callable) #7006 This is a more accurate translation than hasattr(x, '__call__') which failed in the case that somebody had put __call__ in the instance dictionary. Patch mostly by Joe Amenta. ........ r77094 | benjamin.peterson | 2009-12-28 14:45:13 -0600 (Mon, 28 Dec 2009) | 2 lines deuglify imports ........ r77095 | benjamin.peterson | 2009-12-28 14:49:23 -0600 (Mon, 28 Dec 2009) | 1 line remove unused flag ........ r77097 | benjamin.peterson | 2009-12-28 16:12:13 -0600 (Mon, 28 Dec 2009) | 2 lines clean up imports and whitespace ........ r77098 | benjamin.peterson | 2009-12-28 16:43:35 -0600 (Mon, 28 Dec 2009) | 1 line *** empty log message *** ........ r77099 | benjamin.peterson | 2009-12-28 16:45:10 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended change ........ r77100 | benjamin.peterson | 2009-12-28 16:53:21 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended changes ........ r77101 | benjamin.peterson | 2009-12-28 17:46:02 -0600 (Mon, 28 Dec 2009) | 1 line normalize whitespace ........
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from lib2to3 import fixer_base
from lib2to3.fixer_util import Call, Name, String, Attr, touch_import
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Merged revisions 63661,63666,63695,63711,63729,63769,63790,63880,63886 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r63661 | georg.brandl | 2008-05-26 05:26:20 -0500 (Mon, 26 May 2008) | 2 lines Add import fixes for dbm package. ........ r63666 | georg.brandl | 2008-05-26 05:49:09 -0500 (Mon, 26 May 2008) | 2 lines Add xmlrpc package fixes. ........ r63695 | georg.brandl | 2008-05-26 10:14:33 -0500 (Mon, 26 May 2008) | 2 lines Add fixer entries for http package. ........ r63711 | benjamin.peterson | 2008-05-26 13:43:51 -0500 (Mon, 26 May 2008) | 2 lines add import mapping for test.test_support -> test.support ........ r63729 | benjamin.peterson | 2008-05-26 16:31:03 -0500 (Mon, 26 May 2008) | 2 lines mapping for commands module -> subprocess ........ r63769 | brett.cannon | 2008-05-29 00:13:13 -0500 (Thu, 29 May 2008) | 1 line Fixer for UserString.UserString over to the collections module. ........ r63790 | brett.cannon | 2008-05-29 14:13:51 -0500 (Thu, 29 May 2008) | 4 lines Add a fixer for UserList. Closes issue #2878. Thanks to Quentin Gallet-Gilles for the patch. ........ r63880 | collin.winter | 2008-06-01 18:09:38 -0500 (Sun, 01 Jun 2008) | 6 lines Move lib2to3/fixes/{basefix,util}.py down to lib2to3/. This is step 1 of turning lib2to3/ into a general-purpose refactoring library, reusable by other projects. ........ r63886 | collin.winter | 2008-06-01 22:15:01 -0500 (Sun, 01 Jun 2008) | 5 lines Allow refactoring tools to specify a directory for fixer modules. This is step 2 of turning lib2to3/ into a general-purpose refactoring library, reusable by other projects. Step 1: r63880. ........
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class FixCallable(fixer_base.BaseFix):
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# Ignore callable(*args) or use of keywords.
# Either could be a hint that the builtin callable() is not being used.
PATTERN = """
power< 'callable'
trailer< lpar='('
( not(arglist | argument<any '=' any>) func=any
| func=arglist<(not argument<any '=' any>) any ','> )
rpar=')' >
after=any*
>
"""
def transform(self, node, results):
Merged revisions 76871-76872,77093-77095,77097-77101 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r76871 | benjamin.peterson | 2009-12-17 20:49:21 -0600 (Thu, 17 Dec 2009) | 1 line handle unencodable diffs gracefully #5093 ........ r76872 | benjamin.peterson | 2009-12-17 20:51:37 -0600 (Thu, 17 Dec 2009) | 1 line fix emacs header ........ r77093 | benjamin.peterson | 2009-12-28 14:43:32 -0600 (Mon, 28 Dec 2009) | 7 lines replace callable(x) with isinstance(x, collections.Callable) #7006 This is a more accurate translation than hasattr(x, '__call__') which failed in the case that somebody had put __call__ in the instance dictionary. Patch mostly by Joe Amenta. ........ r77094 | benjamin.peterson | 2009-12-28 14:45:13 -0600 (Mon, 28 Dec 2009) | 2 lines deuglify imports ........ r77095 | benjamin.peterson | 2009-12-28 14:49:23 -0600 (Mon, 28 Dec 2009) | 1 line remove unused flag ........ r77097 | benjamin.peterson | 2009-12-28 16:12:13 -0600 (Mon, 28 Dec 2009) | 2 lines clean up imports and whitespace ........ r77098 | benjamin.peterson | 2009-12-28 16:43:35 -0600 (Mon, 28 Dec 2009) | 1 line *** empty log message *** ........ r77099 | benjamin.peterson | 2009-12-28 16:45:10 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended change ........ r77100 | benjamin.peterson | 2009-12-28 16:53:21 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended changes ........ r77101 | benjamin.peterson | 2009-12-28 17:46:02 -0600 (Mon, 28 Dec 2009) | 1 line normalize whitespace ........
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func = results['func']
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Merged revisions 76871-76872,77093-77095,77097-77101 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r76871 | benjamin.peterson | 2009-12-17 20:49:21 -0600 (Thu, 17 Dec 2009) | 1 line handle unencodable diffs gracefully #5093 ........ r76872 | benjamin.peterson | 2009-12-17 20:51:37 -0600 (Thu, 17 Dec 2009) | 1 line fix emacs header ........ r77093 | benjamin.peterson | 2009-12-28 14:43:32 -0600 (Mon, 28 Dec 2009) | 7 lines replace callable(x) with isinstance(x, collections.Callable) #7006 This is a more accurate translation than hasattr(x, '__call__') which failed in the case that somebody had put __call__ in the instance dictionary. Patch mostly by Joe Amenta. ........ r77094 | benjamin.peterson | 2009-12-28 14:45:13 -0600 (Mon, 28 Dec 2009) | 2 lines deuglify imports ........ r77095 | benjamin.peterson | 2009-12-28 14:49:23 -0600 (Mon, 28 Dec 2009) | 1 line remove unused flag ........ r77097 | benjamin.peterson | 2009-12-28 16:12:13 -0600 (Mon, 28 Dec 2009) | 2 lines clean up imports and whitespace ........ r77098 | benjamin.peterson | 2009-12-28 16:43:35 -0600 (Mon, 28 Dec 2009) | 1 line *** empty log message *** ........ r77099 | benjamin.peterson | 2009-12-28 16:45:10 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended change ........ r77100 | benjamin.peterson | 2009-12-28 16:53:21 -0600 (Mon, 28 Dec 2009) | 1 line revert unintended changes ........ r77101 | benjamin.peterson | 2009-12-28 17:46:02 -0600 (Mon, 28 Dec 2009) | 1 line normalize whitespace ........
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touch_import(None, u'collections', node=node)
args = [func.clone(), String(u', ')]
args.extend(Attr(Name(u'collections'), Name(u'Callable')))
return Call(Name(u'isinstance'), args, prefix=node.prefix)