Quelle  __main__.py   Sprache: Python

# -*- coding: utf-8 -*-
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from __future__ import absolute_import, unicode_literals, print_function, division

import sys

from .esprima import parse, tokenize, Error, toDict
from . import version


def main():
    import json
    import time
    import optparse

    usage = "usage: %prog [options] [file.js]"
    parser = optparse.OptionParser(usage=usage, version=version)
    parser.add_option("--comment", dest="comment",
                      action="store_true", default=False,
                      help="Gather all line and block comments in an array")
    parser.add_option("--attachComment", dest="attachComment",
                      action="store_true", default=False,
                      help="Attach comments to nodes")
    parser.add_option("--loc", dest="loc", default=False,
                      action="store_true",
                      help="Include line-column location info for each syntax node")
    parser.add_option("--range", dest="range", default=False,
                      action="store_true",
                      help="Include index-based range for each syntax node")
    parser.add_option("--raw", dest="raw", default=False,
                      action="store_true",
                      help="Display the raw value of literals")
    parser.add_option("--tokens", dest="tokens", default=False,
                      action="store_true",
                      help="List all tokens in an array")
    parser.add_option("--tolerant", dest="tolerant", default=False,
                      action="store_true",
                      help="Tolerate errors on a best-effort basis (experimental)")
    parser.add_option("--tokenize", dest="tokenize", default=False,
                      action="store_true",
                      help="Only tokenize, do not parse.")
    parser.add_option("--module", dest="sourceType", default='string',
                      action="store_const", const='module',
                      help="Tolerate errors on a best-effort basis (experimental)")
    parser.set_defaults(jsx=True, classProperties=True)
    opts, args = parser.parse_args()

    if len(args) == 1:
        with open(args[0], 'rb') as f:
            code = f.read().decode('utf-8')
    elif sys.stdin.isatty():
        parser.print_help()
        return 64
    else:
        code = sys.stdin.read().decode('utf-8')

    options = opts.__dict__
    do_tokenize = options.pop('tokenize')

    t = time.time()
    try:
        if do_tokenize:
            del options['sourceType']
            del options['tokens']
            del options['raw']
            del options['jsx']
            res = toDict(tokenize(code, options=options))
        else:
            res = toDict(parse(code, options=options))
    except Error as e:
        res = e.toDict()
    dt = time.time() - t + 0.000000001

    print(json.dumps(res, indent=4))
    print()
    print('Parsed everyting in', round(dt, 5), 'seconds.')
    print('Thats %d characters per second' % (len(code) // dt))

    return 0


if __name__ == '__main__':
    retval = main()
    sys.exit(retval)