chromium/third_party/fuzztest/src/fuzztest/internal/domains/serialization_helpers.h

// 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.

#ifndef FUZZTEST_FUZZTEST_INTERNAL_DOMAINS_SERIALIZATION_HELPERS_H_
#define FUZZTEST_FUZZTEST_INTERNAL_DOMAINS_SERIALIZATION_HELPERS_H_

#include <cstddef>
#include <optional>
#include <tuple>
#include <utility>
#include <variant>
#include <vector>

#include "absl/types/span.h"
#include "./fuzztest/internal/domains/domain.h"
#include "./fuzztest/internal/meta.h"
#include "./fuzztest/internal/serialization.h"

namespace fuzztest::internal {

// Helper serialization functions for common patterns: optional/variant/tuple.

template <typename... Domain>
IRObject SerializeWithDomainVariant(
    const std::tuple<Domain...>& domains,
    const std::variant<corpus_type_t<Domain>...>& v) { … }

template <typename... Domain,
          typename ReturnT = std::variant<corpus_type_t<Domain>...>>
std::optional<ReturnT> ParseWithDomainVariant(
    const std::tuple<Domain...>& domains, const IRObject& obj) { … }

template <typename T>
auto SerializeWithDomainOptional(
    const Domain<T>& domain,
    const std::variant<std::monostate, GenericDomainCorpusType>& v) { … }

template <typename T, typename ReturnT =
                          std::variant<std::monostate, GenericDomainCorpusType>>
std::optional<ReturnT> ParseWithDomainOptional(const Domain<T>& domain,
                                               const IRObject& obj) { … }

template <typename... Domain>
auto SerializeWithDomainTuple(
    const std::tuple<Domain...>& domains,
    const std::tuple<corpus_type_t<Domain>...>& corpus) { … }

// Parse a corpus given a tuple of domains, skipping the first `skip` subs.
template <typename... Domain>
std::optional<std::tuple<corpus_type_t<Domain>...>> ParseWithDomainTuple(
    const std::tuple<Domain...>& domains, const IRObject& obj, int skip = 0) { … }

}  // namespace fuzztest::internal

#endif  // FUZZTEST_FUZZTEST_INTERNAL_DOMAINS_SERIALIZATION_HELPERS_H_