oss-fuzz/projects/parso/parso_diff_fuzz.py

43 lines
1.2 KiB
Python

#!/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
import parso
def TestOneInput(data):
fdp = atheris.FuzzedDataProvider(data)
grammar = parso.load_grammar()
try:
module = parso.parse(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
if module != None:
diff_parser = parso.python.diff.DiffParser(grammar._pgen_grammar,
grammar._tokenizer, module)
diff_parser.update(["line1"], ["newline1"])
except RecursionError:
# Not interesting
pass
def main():
atheris.instrument_all()
atheris.Setup(sys.argv, TestOneInput)
atheris.Fuzz()
if __name__ == "__main__":
main()