symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/lib2to3/fixes/fix_apply.py
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

# 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

class FixApply(fixer_base.BaseFix):

    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")
        prefix = node.get_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 = self.parenthesize(func)
        func.set_prefix("")
        args = args.clone()
        args.set_prefix("")
        if kwds is not None:
            kwds = kwds.clone()
            kwds.set_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].set_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)