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v0.5.1
Revision fd340bf9e308130736c76257ff9a697edbeb082d authored by Miss Islington (bot) on 05 March 2018, 16:49:15 UTC, committed by GitHub on 05 March 2018, 16:49:15 UTC 
bpo-32984: IDLE - set __file__ for startup files (GH-5981)
 

Like Python, IDLE optionally runs one startup file in the Shell window
before presenting the first interactive input prompt.  For IDLE,
option -s runs a file named in environmental variable IDLESTARTUP or
PYTHONSTARTUP; -r file runs file.  Python sets __file__ to the startup
file name before running the file and unsets it before the first
prompt.  IDLE now does the same when run normally, without the -n
option.
(cherry picked from commit 22c82be5df70c3d51e3f89b54fe1d4fb84728c1e)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
1 parent f92478d
Raw File
makeopcodetargets.py 
#! /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).
"""

import os
import sys


try:
    from importlib.machinery import SourceFileLoader
except ImportError:
    import imp

    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]))
else:
    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", modname + ".py")
        return SourceFileLoader(modname, modpath).load_module()


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():
        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")


def main():
    if len(sys.argv) >= 3:
        sys.exit("Too many arguments")
    if len(sys.argv) == 2:
        target = sys.argv[1]
    else:
        target = "Python/opcode_targets.h"
    with open(target, "w") as f:
        write_contents(f)
    print("Jump table written into %s" % target)


if __name__ == "__main__":
    main()
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