blob: 777475f2fb9d4ebe957427eef802b8946daf70ef [file] [log] [blame]
#!/usr/bin/env python3
# Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
# This script runs the parser which is generated using ANTLR 4 from
# docs/language/Dart.g. It relies on a certain environment and is hence
# usable locally where this environment can be obtained, but it may not be
# possible to run it, e.g., on build bots. The requirements are as follows:
# - `make parser` in spec_parser has been executed successfully.
# - A suitable JVM is in the PATH and may be executed as 'java'.
# - the ANTLR3 jar is available as /usr/share/java/antlr4-runtime.jar.
import os
import subprocess
import sys
def Help(missing):
print('Execution of the spec parser failed. Missing: ' + missing)
print('Please read the comment near the top of\n')
def Main():
args = sys.argv[1:]
tools_dir = os.path.dirname(os.path.realpath(__file__))
spec_parser_dir = os.path.join(tools_dir, 'spec_parser')
spec_parser_file = os.path.join(spec_parser_dir, 'SpecParser.class')
antlr_jar = '/usr/share/java/antlr4-runtime.jar'
class_path = ':'.join([spec_parser_dir, antlr_jar])
command = ['java', '-cp', class_path, 'SpecParser'] + args
if not os.path.exists(antlr_jar): Help(antlr_jar)
if not os.path.exists(spec_parser_file):
Help('"make parser" in spec_parser')
if __name__ == '__main__':