// Copyright 2019 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.

#include <cstddef>

#include <cstdint>

#include <fuzzer/FuzzedDataProvider.h>

#include "wabt/binary-reader-ir.h"

#include "wabt/binary-reader.h"

#include "wabt/binary-writer.h"

#include "wabt/decompiler.h"

#include "wabt/ir.h"

#include "wabt/option-parser.h"

#include "wabt/stream.h"

#include "wabt/validator.h"

#include "wabt/wat-writer.h"

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

  wabt::Errors errors;

  wabt::Module module;

  wabt::Features features;

  FuzzedDataProvider data_provider(data, size);

#define WABT_FEATURE(variable, flag, default_, help) \

  if (data_provider.ConsumeBool()) { features.enable_##variable(); }

#include "wabt/feature.def"

#undef WABT_FEATURE

  // Add only feature related options, but no logging, stop_on_first_error, etc.

  wabt::ReadBinaryOptions options(features, nullptr, false, false, false);

  std::vector<uint8_t> text = data_provider.ConsumeRemainingBytes<uint8_t>();

  if (wabt::Succeeded(wabt::ReadBinaryIr("", text.data(), text.size(), options, &errors, &module))) {

    wabt::ValidateOptions validate_options(features);

    if (wabt::Succeeded(wabt::ValidateModule(&module, &errors, validate_options))) {

      wabt::DecompileOptions decompile_options;

      wabt::Decompile(module, decompile_options);

      wabt::MemoryStream stream;

      wabt::WriteBinaryOptions write_binary_options;

      wabt::WriteBinaryModule(&stream, &module, write_binary_options);

      wabt::WriteWatOptions write_wat_options(features);

      wabt::WriteWat(&stream, &module, write_wat_options);

    }

  }

  return 0;

}