ref: 0f5a9eb1465c76426034a68caa2ff350d29716e0
dir: /tools/consts.py/
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Usage: python consts.py constants/some_constants.asm
View numeric values of `const`ants.
"""
import sys
import re
const_value = 0
const_inc = 1
def asm_int(s):
base = {'$': 16, '&': 8, '%': 2}.get(s[0], 10)
return int(s if base == 10 else s[1:], base)
def print_const(s, v):
print(f'{s} == {v} == ${v:x}')
def parse_for_constants(line):
global const_value, const_inc
if not (m := re.match(r'^\s+([A-Za-z_][A-Za-z0-9_@#]*)(?:\s+([^;\\n]+))?', line)):
return
macro, rest = m.groups()
args = [arg.strip() for arg in rest.split(',')] if rest else []
if args and not args[-1]:
args = args[:-1]
if macro == 'const_def':
const_value = asm_int(args[0]) if len(args) >= 1 else 0
const_inc = asm_int(args[1]) if len(args) >= 2 else 1
elif macro == 'const':
print_const(args[0], const_value)
const_value += const_inc
elif macro == 'shift_const':
print_const(args[0], 1 << const_value)
print_const(args[0] + '_F', const_value)
const_value += const_inc
elif macro == 'const_skip':
const_value += const_inc * (asm_int(args[0]) if len(args) >= 1 else 1)
elif macro == 'const_next':
const_value = asm_int(args[0])
def main():
if len(sys.argv) < 2:
print(f'Usage: {sys.argv[0]} constants/some_constants.asm', file=sys.stderr)
sys.exit(1)
for filename in sys.argv[1:]:
with open(filename, 'r', encoding='utf-8') as file:
for line in file:
parse_for_constants(line)
if __name__ == '__main__':
main()