from functools import partial
from parse.generic import macro_line

tokenize_lines = partial(macro_line.tokenize_lines, prefix='const ')

def flatten(tokens):
    index = 0
    for t in tokens:
        assert t[0] == 'const', t
        yield t[1][0], index
        index += 1

def parse(prefix):
    path = prefix / 'constants/tileset_constants.asm'
    with open(path) as f:
        return dict(flatten(tokenize_lines(f.read().split('\n'))))