cpython/Lib/lib2to3/fixes/fix_execfile.py

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# Copyright 2006 Google, Inc. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.
"""Fixer for execfile.
This converts usages of the execfile function into calls to the built-in
exec() function.
"""
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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from .. import fixer_base
Merged revisions 68197 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ................ r68197 | benjamin.peterson | 2009-01-03 10:34:02 -0600 (Sat, 03 Jan 2009) | 55 lines Merged revisions 67900-67901,67919,67928,67984,67991-67993,68106-68108,68110 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r67900 | benjamin.peterson | 2008-12-22 14:02:45 -0600 (Mon, 22 Dec 2008) | 4 lines fix_execfile: wrap the open(fn).read() call in compile(), so the filename is preserved also add unittests for the fixer ........ r67901 | benjamin.peterson | 2008-12-22 14:09:55 -0600 (Mon, 22 Dec 2008) | 1 line remove unused import ........ r67919 | benjamin.peterson | 2008-12-23 13:12:22 -0600 (Tue, 23 Dec 2008) | 1 line copy permission bits from the backup to the original ........ r67928 | benjamin.peterson | 2008-12-26 20:49:30 -0600 (Fri, 26 Dec 2008) | 1 line don't be so idiot about multiple local imports in fix_import; still won't handle absolute and local imports on the same line ........ r67984 | benjamin.peterson | 2008-12-28 09:55:16 -0600 (Sun, 28 Dec 2008) | 1 line don't need loop ........ r67991 | benjamin.peterson | 2008-12-28 14:30:26 -0600 (Sun, 28 Dec 2008) | 1 line actually call finish_tree() ........ r67992 | benjamin.peterson | 2008-12-28 14:34:47 -0600 (Sun, 28 Dec 2008) | 1 line remove useless test ........ r67993 | benjamin.peterson | 2008-12-28 15:04:32 -0600 (Sun, 28 Dec 2008) | 1 line update pyk3's test grammar ........ r68106 | benjamin.peterson | 2008-12-31 11:53:58 -0600 (Wed, 31 Dec 2008) | 1 line #2734 don't convert every instance of long (eg if it's an attribute) ........ r68107 | benjamin.peterson | 2008-12-31 11:55:10 -0600 (Wed, 31 Dec 2008) | 1 line add another test ........ r68108 | benjamin.peterson | 2008-12-31 12:00:12 -0600 (Wed, 31 Dec 2008) | 1 line don't change long even if it's the only argument name ........ r68110 | benjamin.peterson | 2008-12-31 14:13:26 -0600 (Wed, 31 Dec 2008) | 1 line remove unused import ........ ................
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from ..fixer_util import (Comma, Name, Call, LParen, RParen, Dot, Node,
ArgList, String, syms)
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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 FixExecfile(fixer_base.BaseFix):
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PATTERN = """
power< 'execfile' trailer< '(' arglist< filename=any [',' globals=any [',' locals=any ] ] > ')' > >
|
power< 'execfile' trailer< '(' filename=any ')' > >
"""
def transform(self, node, results):
assert results
filename = results["filename"]
globals = results.get("globals")
locals = results.get("locals")
Merged revisions 68197 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ................ r68197 | benjamin.peterson | 2009-01-03 10:34:02 -0600 (Sat, 03 Jan 2009) | 55 lines Merged revisions 67900-67901,67919,67928,67984,67991-67993,68106-68108,68110 via svnmerge from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r67900 | benjamin.peterson | 2008-12-22 14:02:45 -0600 (Mon, 22 Dec 2008) | 4 lines fix_execfile: wrap the open(fn).read() call in compile(), so the filename is preserved also add unittests for the fixer ........ r67901 | benjamin.peterson | 2008-12-22 14:09:55 -0600 (Mon, 22 Dec 2008) | 1 line remove unused import ........ r67919 | benjamin.peterson | 2008-12-23 13:12:22 -0600 (Tue, 23 Dec 2008) | 1 line copy permission bits from the backup to the original ........ r67928 | benjamin.peterson | 2008-12-26 20:49:30 -0600 (Fri, 26 Dec 2008) | 1 line don't be so idiot about multiple local imports in fix_import; still won't handle absolute and local imports on the same line ........ r67984 | benjamin.peterson | 2008-12-28 09:55:16 -0600 (Sun, 28 Dec 2008) | 1 line don't need loop ........ r67991 | benjamin.peterson | 2008-12-28 14:30:26 -0600 (Sun, 28 Dec 2008) | 1 line actually call finish_tree() ........ r67992 | benjamin.peterson | 2008-12-28 14:34:47 -0600 (Sun, 28 Dec 2008) | 1 line remove useless test ........ r67993 | benjamin.peterson | 2008-12-28 15:04:32 -0600 (Sun, 28 Dec 2008) | 1 line update pyk3's test grammar ........ r68106 | benjamin.peterson | 2008-12-31 11:53:58 -0600 (Wed, 31 Dec 2008) | 1 line #2734 don't convert every instance of long (eg if it's an attribute) ........ r68107 | benjamin.peterson | 2008-12-31 11:55:10 -0600 (Wed, 31 Dec 2008) | 1 line add another test ........ r68108 | benjamin.peterson | 2008-12-31 12:00:12 -0600 (Wed, 31 Dec 2008) | 1 line don't change long even if it's the only argument name ........ r68110 | benjamin.peterson | 2008-12-31 14:13:26 -0600 (Wed, 31 Dec 2008) | 1 line remove unused import ........ ................
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# Copy over the prefix from the right parentheses end of the execfile
# call.
execfile_paren = node.children[-1].children[-1].clone()
# Construct open().read().
open_args = ArgList([filename.clone()], rparen=execfile_paren)
open_call = Node(syms.power, [Name("open"), open_args])
read = [Node(syms.trailer, [Dot(), Name('read')]),
Node(syms.trailer, [LParen(), RParen()])]
open_expr = [open_call] + read
# Wrap the open call in a compile call. This is so the filename will be
# preserved in the execed code.
filename_arg = filename.clone()
filename_arg.set_prefix(" ")
exec_str = String("'exec'", " ")
compile_args = open_expr + [Comma(), filename_arg, Comma(), exec_str]
compile_call = Call(Name("compile"), compile_args, "")
# Finally, replace the execfile call with an exec call.
args = [compile_call]
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if globals is not None:
args.extend([Comma(), globals.clone()])
if locals is not None:
args.extend([Comma(), locals.clone()])
return Call(Name("exec"), args, prefix=node.get_prefix())