Merged revisions 83352,83355-83358,83362,83366,83368-83369 via svnmerge from svn+ssh://svn.python.org/python/branches/py3k ........ r83352 | georg.brandl | 2010-07-31 20:11:07 +0200 (Sa, 31 Jul 2010) | 1 line #9440: Remove borderline test case that fails based on unpredictable conditions such as compiler flags. ........ r83355 | georg.brandl | 2010-07-31 21:17:11 +0200 (Sa, 31 Jul 2010) | 1 line Fix bad merge: test_support -> support. ........ r83356 | georg.brandl | 2010-07-31 21:29:15 +0200 (Sa, 31 Jul 2010) | 1 line Remove trailing whitespace. ........ r83357 | georg.brandl | 2010-07-31 21:59:55 +0200 (Sa, 31 Jul 2010) | 1 line #5778: document that sys.version can contain a newline. ........ r83358 | georg.brandl | 2010-07-31 22:05:31 +0200 (Sa, 31 Jul 2010) | 1 line #9442: do not document a specific format for sys.version; rather refer to version_info and the platform module. ........ r83362 | georg.brandl | 2010-07-31 23:12:15 +0200 (Sa, 31 Jul 2010) | 1 line #8910: add a file explaining why Lib/test/data is there. ........ r83366 | georg.brandl | 2010-07-31 23:26:40 +0200 (Sa, 31 Jul 2010) | 1 line There always is a False and True now. ........ r83368 | georg.brandl | 2010-07-31 23:40:15 +0200 (Sa, 31 Jul 2010) | 1 line #7909: the prefixes \\.\ and \\?\ indicate special Windows paths, do not try to manipulate them. See http://msdn.microsoft.com/en-us/library/aa365247%28VS.85%29.aspx for details. ........ r83369 | georg.brandl | 2010-07-31 23:41:42 +0200 (Sa, 31 Jul 2010) | 1 line Fix "Berkeley" name. ........

#! /usr/bin/env python
"""Generate C code for the jump table of the threaded code interpreter
(for compilers supporting computed gotos or "labels-as-values", such as gcc).
"""

# This code should stay compatible with Python 2.3, at least while
# some of the buildbots have Python 2.3 as their system Python.

import imp
import os


def find_module(modname):
    """Finds and returns a module in the local dist/checkout.
    """
    modpath = os.path.join(
        os.path.dirname(os.path.dirname(__file__)), "Lib")
    return imp.load_module(modname, *imp.find_module(modname, [modpath]))

def write_contents(f):
    """Write C code contents to the target file object.
    """
    opcode = find_module("opcode")
    targets = ['_unknown_opcode'] * 256
    for opname, op in opcode.opmap.items():
        if opname == "STOP_CODE":
            # XXX opcode not implemented
            continue
        targets[op] = "TARGET_%s" % opname
    f.write("static void *opcode_targets[256] = {\n")
    f.write(",\n".join(["    &&%s" % s for s in targets]))
    f.write("\n};\n")


if __name__ == "__main__":
    import sys
    assert len(sys.argv) < 3, "Too many arguments"
    if len(sys.argv) == 2:
        target = sys.argv[1]
    else:
        target = "Python/opcode_targets.h"
    f = open(target, "w")
    try:
        write_contents(f)
    finally:
        f.close()