Current File : //opt/alt/python35/lib64/python3.5/lib2to3/fixes/fix_intern.py
# Copyright 2006 Georg Brandl.
# Licensed to PSF under a Contributor Agreement.
"""Fixer for intern().
intern(s) -> sys.intern(s)"""
# Local imports
from .. import fixer_base
from ..fixer_util import ImportAndCall, touch_import
class FixIntern(fixer_base.BaseFix):
BM_compatible = True
order = "pre"
PATTERN = """
power< 'intern'
trailer< lpar='('
( not(arglist | argument<any '=' any>) obj=any
| obj=arglist<(not argument<any '=' any>) any ','> )
rpar=')' >
after=any*
>
"""
def transform(self, node, results):
if results:
# I feel like we should be able to express this logic in the
# PATTERN above but I don't know how to do it so...
obj = results['obj']
if obj:
if obj.type == self.syms.star_expr:
return # Make no change.
if (obj.type == self.syms.argument and
obj.children[0].value == '**'):
return # Make no change.
names = ('sys', 'intern')
new = ImportAndCall(node, results, names)
touch_import(None, 'sys', node)
return new
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