GenerateReservedWordsJS.py

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# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import re

import sys

def read_reserved_word_list(filename):

    macro_pat = re.compile(r"^\s*MACRO\(([^,]+), *[^,]+, *[^\)]+\)\s*\\?$")

    reserved_word_list = []

    with open(filename, "r") as f:

        for line in f:

            m = macro_pat.search(line)

            if m:

                reserved_word_list.append(m.group(1))

    assert len(reserved_word_list) != 0

    return reserved_word_list

def line(opt, s):

    opt["output"].write("{}\n".format(s))

def main(output, reserved_words_h):

    reserved_word_list = read_reserved_word_list(reserved_words_h)

    opt = {"output": output}

    line(opt, "const JS_RESERVED_WORDS = [")

    for word in reserved_word_list:

        line(opt, '  "{}",'.format(word))

    line(opt, "];")

    line(opt, "module.exports = JS_RESERVED_WORDS;")

if __name__ == "__main__":

    main(sys.stdout, *sys.argv[1:])