mirror of
https://github.com/python/cpython.git
synced 2024-11-24 08:52:25 +01:00
1863302d61
Create Tools/build/ directory. Move the following scripts from Tools/scripts/ to Tools/build/: * check_extension_modules.py * deepfreeze.py * freeze_modules.py * generate_global_objects.py * generate_levenshtein_examples.py * generate_opcode_h.py * generate_re_casefix.py * generate_sre_constants.py * generate_stdlib_module_names.py * generate_token.py * parse_html5_entities.py * smelly.py * stable_abi.py * umarshal.py * update_file.py * verify_ensurepip_wheels.py Update references to these scripts.
81 lines
2.2 KiB
Python
Executable File
81 lines
2.2 KiB
Python
Executable File
#! /usr/bin/env python3
|
|
# This script generates Modules/_sre/sre_constants.h from Lib/re/_constants.py.
|
|
|
|
SCRIPT_NAME = 'Tools/build/generate_sre_constants.py'
|
|
|
|
|
|
def update_file(file, content):
|
|
try:
|
|
with open(file, 'r') as fobj:
|
|
if fobj.read() == content:
|
|
return False
|
|
except (OSError, ValueError):
|
|
pass
|
|
with open(file, 'w') as fobj:
|
|
fobj.write(content)
|
|
return True
|
|
|
|
sre_constants_header = f"""\
|
|
/*
|
|
* Secret Labs' Regular Expression Engine
|
|
*
|
|
* regular expression matching engine
|
|
*
|
|
* Auto-generated by {SCRIPT_NAME} from
|
|
* Lib/re/_constants.py.
|
|
*
|
|
* Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved.
|
|
*
|
|
* See the sre.c file for information on usage and redistribution.
|
|
*/
|
|
|
|
"""
|
|
|
|
def main(
|
|
infile="Lib/re/_constants.py",
|
|
outfile_constants="Modules/_sre/sre_constants.h",
|
|
outfile_targets="Modules/_sre/sre_targets.h",
|
|
):
|
|
ns = {}
|
|
with open(infile) as fp:
|
|
code = fp.read()
|
|
exec(code, ns)
|
|
|
|
def dump(d, prefix):
|
|
items = sorted(d)
|
|
for item in items:
|
|
yield "#define %s_%s %d\n" % (prefix, item, item)
|
|
|
|
def dump2(d, prefix):
|
|
items = [(value, name) for name, value in d.items()
|
|
if name.startswith(prefix)]
|
|
for value, name in sorted(items):
|
|
yield "#define %s %d\n" % (name, value)
|
|
|
|
def dump_gotos(d, prefix):
|
|
for i, item in enumerate(sorted(d)):
|
|
assert i == item
|
|
yield f" &&{prefix}_{item},\n"
|
|
|
|
content = [sre_constants_header]
|
|
content.append("#define SRE_MAGIC %d\n" % ns["MAGIC"])
|
|
content.extend(dump(ns["OPCODES"], "SRE_OP"))
|
|
content.extend(dump(ns["ATCODES"], "SRE"))
|
|
content.extend(dump(ns["CHCODES"], "SRE"))
|
|
content.extend(dump2(ns, "SRE_FLAG_"))
|
|
content.extend(dump2(ns, "SRE_INFO_"))
|
|
|
|
update_file(outfile_constants, ''.join(content))
|
|
|
|
content = [sre_constants_header]
|
|
content.append(f"static void *sre_targets[{len(ns['OPCODES'])}] = {{\n")
|
|
content.extend(dump_gotos(ns["OPCODES"], "TARGET_SRE_OP"))
|
|
content.append("};\n")
|
|
|
|
update_file(outfile_targets, ''.join(content))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
import sys
|
|
main(*sys.argv[1:])
|