cpython/Tools/scripts/generate_symbol_py.py at startup_debug · native-api/cpython · GitHub

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#! /usr/bin/env python3

# This script generates the symbol.py source file.

import sys

import re

def main(inFileName="Include/graminit.h", outFileName="Lib/symbol.py"):

try:

fp = open(inFileName)

except OSError as err:

sys.stderr.write("I/O error: %s\n" % str(err))

sys.exit(1)

with fp:

lines = fp.read().split("\n")

prog = re.compile(

"#define[ \t][ \t]*([A-Z0-9][A-Z0-9_]*)[ \t][ \t]*([0-9][0-9]*)",

re.IGNORECASE)

tokens = {}

for line in lines:

match = prog.match(line)

if match:

name, val = match.group(1, 2)

val = int(val)

tokens[val] = name # reverse so we can sort them...

keys = sorted(tokens.keys())

# load the output skeleton from the target:

try:

fp = open(outFileName)

except OSError as err:

sys.stderr.write("I/O error: %s\n" % str(err))

sys.exit(2)

with fp:

format = fp.read().split("\n")

try:

start = format.index("#--start constants--") + 1

end = format.index("#--end constants--")

except ValueError:

sys.stderr.write("target does not contain format markers")

sys.exit(3)

lines = []

for val in keys:

lines.append("%s = %d" % (tokens[val], val))

format[start:end] = lines

try:

fp = open(outFileName, 'w')

except OSError as err:

sys.stderr.write("I/O error: %s\n" % str(err))

sys.exit(4)

with fp:

fp.write("\n".join(format))

if __name__ == '__main__':

main(*sys.argv[1:])

cpython/Tools/scripts/generate_symbol_py.py at startup_debug · native-api/cpython · GitHub

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