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# Copyright 2006 Google, Inc. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.

"""Fixer for exec.

This converts usages of the exec statement into calls to a built-in
exec() function.

exec code in ns1, ns2 -> exec(code, ns1, ns2)
"""

# Local imports
from .. import fixer_base
from ..fixer_util import Comma, Name, Call


class FixExec(fixer_base.BaseFix):
    BM_compatible = True

    PATTERN = """
    exec_stmt< 'exec' a=any 'in' b=any [',' c=any] >
    |
    exec_stmt< 'exec' (not atom<'(' [any] ')'>) a=any >
    """

    def transform(self, node, results):
        assert results
        syms = self.syms
        a = result