Mercurial > cpython-lru_cache-weakref

annotate Python/makeopcodetargets.py @ 62197:2cfe15b3cdf5

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PyArg_Parse*("Z#") raises an error for unknown type instead of ignoring the error and leave the pointer to the string and the size unchanged (not initialized). Fix also the type in the error message of "Z", "Z#" and "Y" formats.
author Victor Stinner <victor.stinner@haypocalc.com>
date Tue, 08 Jun 2010 21:45:51 +0000
parents cab14be0ada1
children 3c9232a684ae
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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5c5de8acb33c fix bootstrapping on machines with only 2.x installed
Benjamin Peterson <benjamin@python.org>
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1 #! /usr/bin/env python
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2 """Generate C code for the jump table of the threaded code interpreter
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3 (for compilers supporting computed gotos or "labels-as-values", such as gcc).
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4 """
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5
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Mark Dickinson <dickinsm@gmail.com>
parents: 51031
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6 # This code should stay compatible with Python 2.3, at least while
df090597afaa Make Python/makeopcodetargets runnable with Python 2.3. With any luck, this
Mark Dickinson <dickinsm@gmail.com>
parents: 51031
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7 # some of the buildbots have Python 2.3 as their system Python.
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8
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9 import imp
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10 import os
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11
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12
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13 def find_module(modname):
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14 """Finds and returns a module in the local dist/checkout.
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15 """
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16 modpath = os.path.join(
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17 os.path.dirname(os.path.dirname(__file__)), "Lib")
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18 return imp.load_module(modname, *imp.find_module(modname, [modpath]))
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19
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20 def write_contents(f):
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21 """Write C code contents to the target file object.
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22 """
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23 opcode = find_module("opcode")
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24 targets = ['_unknown_opcode'] * 256
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25 for opname, op in opcode.opmap.items():
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26 if opname == "STOP_CODE":
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27 # XXX opcode not implemented
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28 continue
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29 targets[op] = "TARGET_%s" % opname
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30 f.write("static void *opcode_targets[256] = {\n")
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31 f.write(",\n".join([" &&%s" % s for s in targets]))
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32 f.write("\n};\n")
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33
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34
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35 if __name__ == "__main__":
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36 import sys
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37 assert len(sys.argv) < 3, "Too many arguments"
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38 if len(sys.argv) == 2:
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39 target = sys.argv[1]
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40 else:
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41 target = "Python/opcode_targets.h"
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42 f = open(target, "w")
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43 try:
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44 write_contents(f)
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45 finally:
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46 f.close()