#!/usr/bin/python3
# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
import atheris
import pycparser


def TestOneInput(data):
  fdp = atheris.FuzzedDataProvider(data)
  lex_optimize = fdp.ConsumeBool()
  yacc_debug = fdp.ConsumeBool()
  yacc_optimize = fdp.ConsumeBool()

  c_source = fdp.ConsumeUnicodeNoSurrogates(sys.maxsize)
  _c_parser = pycparser.c_parser.CParser(
                lex_optimize=lex_optimize,
                yacc_debug=yacc_debug,
                yacc_optimize=yacc_optimize)
  try:
    _c_parser.parse(
        c_source,
        ''
    )
  except pycparser.c_parser.ParseError:
    pass
  except AssertionError:
    pass


def main():
  atheris.instrument_all()
  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
  atheris.Fuzz()


if __name__ == "__main__":
  main()