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// Copyright 2021 The Tint Authors.
//
// 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.
#ifndef SRC_TINT_FUZZERS_TINT_READER_WRITER_FUZZER_H_
#define SRC_TINT_FUZZERS_TINT_READER_WRITER_FUZZER_H_
#include <memory>
#include "src/tint/fuzzers/tint_common_fuzzer.h"
#include "src/tint/fuzzers/transform_builder.h"
namespace tint::fuzzers {
/// Wrapper around the common fuzzing class for tint_*_reader_*_writter fuzzers
class ReaderWriterFuzzer : public CommonFuzzer {
public:
/// Constructor
/// Pass through to the CommonFuzzer constructor
/// @param input shader language being read
/// @param output shader language being emitted
ReaderWriterFuzzer(InputFormat input, OutputFormat output)
: CommonFuzzer(input, output) {}
/// Destructor
~ReaderWriterFuzzer() {}
/// Pass through to the CommonFuzzer setter, but records if it has been
/// invoked.
/// @param tm manager for transforms to run
/// @param inputs data for transforms to run
void SetTransformManager(transform::Manager* tm, transform::DataMap* inputs) {
tm_set_ = true;
CommonFuzzer::SetTransformManager(tm, inputs);
}
/// Pass through to the CommonFuzzer implementation, but will setup a
/// robustness transform, if no other transforms have been set.
/// @param data buffer of data that will interpreted as a byte array or string
/// depending on the shader input format.
/// @param size number of elements in buffer
/// @returns 0, this is what libFuzzer expects
int Run(const uint8_t* data, size_t size) {
if (!tm_set_) {
tb_ = std::make_unique<TransformBuilder>(data, size);
tb_->AddTransform<tint::transform::Robustness>();
SetTransformManager(tb_->manager(), tb_->data_map());
}
return CommonFuzzer::Run(data, size);
}
private:
bool tm_set_ = false;
std::unique_ptr<TransformBuilder> tb_;
};
} // namespace tint::fuzzers
#endif // SRC_TINT_FUZZERS_TINT_READER_WRITER_FUZZER_H_