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svn+ssh://pythondev@svn.python.org/python/trunk ........ r61596 | martin.v.loewis | 2008-03-18 23:43:46 -0500 (Di, 18 Mär 2008) | 2 lines Import lib2to3. ........ r61597 | martin.v.loewis | 2008-03-18 23:58:04 -0500 (Di, 18 Mär 2008) | 3 lines Initialized merge tracking via "svnmerge" with revisions "1-61595" from svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........
39 lines
971 B
Python
39 lines
971 B
Python
# Copyright 2006 Google, Inc. All Rights Reserved.
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# Licensed to PSF under a Contributor Agreement.
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"""Fixer for exec.
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This converts usages of the exec statement into calls to a built-in
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exec() function.
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exec code in ns1, ns2 -> exec(code, ns1, ns2)
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"""
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# Local imports
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from .. import pytree
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from . import basefix
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from .util import Comma, Name, Call
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class FixExec(basefix.BaseFix):
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PATTERN = """
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exec_stmt< 'exec' a=any 'in' b=any [',' c=any] >
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exec_stmt< 'exec' (not atom<'(' [any] ')'>) a=any >
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"""
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def transform(self, node, results):
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assert results
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syms = self.syms
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a = results["a"]
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b = results.get("b")
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c = results.get("c")
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args = [a.clone()]
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args[0].set_prefix("")
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if b is not None:
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args.extend([Comma(), b.clone()])
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if c is not None:
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args.extend([Comma(), c.clone()])
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return Call(Name("exec"), args, prefix=node.get_prefix())
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