#!/usr/bin/python3
# Copyright 2023 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

from cffi import FFI, VerificationError, FFIError, CDefError
from cffi import recompiler


def TestOneInput(data):
  fdp = atheris.FuzzedDataProvider(data)
  ffi = FFI()
  try:
    ffi.cdef(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
    recomp = recompiler.Recompiler(ffi, 'fuzzmod')

    # Call functions on the recompiler object.
    recomp.collect_type_table()
    recomp.collect_step_tables()
  except (VerificationError, FFIError, CDefError) as e:
    pass
  except AssertionError:
    pass


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


if __name__ == "__main__":
  main()