69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
|
# Copyright 2006 Google, Inc. All Rights Reserved.
|
||
|
|
# Licensed to PSF under a Contributor Agreement.
|
||
|
|
|
||
|
|
"""Fixer for apply().
|
||
|
|
|
||
|
|
This converts apply(func, v, k) into (func)(*v, **k)."""
|
||
|
|
|
||
|
|
# Local imports
|
||
|
|
from .. import pytree
|
||
|
|
from ..pgen2 import token
|
||
|
|
from .. import fixer_base
|
||
|
|
from ..fixer_util import Call, Comma, parenthesize
|
||
|
|
|
||
|
|
class FixApply(fixer_base.BaseFix):
|
||
|
|
BM_compatible = True
|
||
|
|
|
||
|
|
PATTERN = """
|
||
|
|
power< 'apply'
|
||
|
|
trailer<
|
||
|
|
'('
|
||
|
|
arglist<
|
||
|
|
(not argument<NAME '=' any>) func=any ','
|
||
|
|
(not argument<NAME '=' any>) args=any [','
|
||
|
|
(not argument<NAME '=' any>) kwds=any] [',']
|
||
|
|
>
|
||
|
|
')'
|
||
|
|
>
|
||
|
|
>
|
||
|
|
"""
|
||
|
|
|
||
|
|
def transform(self, node, results):
|
||
|
|
syms = self.syms
|
||
|
|
assert results
|
||
|
|
func = results["func"]
|
||
|
|
args = results["args"]
|
||
|
|
kwds = results.get("kwds")
|
||
|
|
# 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...
|
||
|
|
if args:
|
||
|
|
if (args.type == self.syms.argument and
|
||
|
|
args.children[0].value in {'**', '*'}):
|
||
|
|
return # Make no change.
|
||
|
|
if kwds and (kwds.type == self.syms.argument and
|
||
|
|
kwds.children[0].value == '**'):
|
||
|
|
return # Make no change.
|
||
|
|
prefix = node.prefix
|
||
|
|
func = func.clone()
|
||
|
|
if (func.type not in (token.NAME, syms.atom) and
|
||
|
|
(func.type != syms.power or
|
||
|
|
func.children[-2].type == token.DOUBLESTAR)):
|
||
|
|
# Need to parenthesize
|
||
|
|
func = parenthesize(func)
|
||
|
|
func.prefix = ""
|
||
|
|
args = args.clone()
|
||
|
|
args.prefix = ""
|
||
|
|
if kwds is not None:
|
||
|
|
kwds = kwds.clone()
|
||
|
|
kwds.prefix = ""
|
||
|
|
l_newargs = [pytree.Leaf(token.STAR, "*"), args]
|
||
|
|
if kwds is not None:
|
||
|
|
l_newargs.extend([Comma(),
|
||
|
|
pytree.Leaf(token.DOUBLESTAR, "**"),
|
||
|
|
kwds])
|
||
|
|
l_newargs[-2].prefix = " " # that's the ** token
|
||
|
|
# XXX Sometimes we could be cleverer, e.g. apply(f, (x, y) + t)
|
||
|
|
# can be translated into f(x, y, *t) instead of f(*(x, y) + t)
|
||
|
|
#new = pytree.Node(syms.power, (func, ArgList(l_newargs)))
|
||
|
|
return Call(func, l_newargs, prefix=prefix)
|