chromium/third_party/fuzztest/src/fuzztest/internal/domains/unique_elements_container_of_impl.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_UNIQUE_ELEMENTS_CONTAINER_OF_IMPL_H_
#define FUZZTEST_FUZZTEST_INTERNAL_DOMAINS_UNIQUE_ELEMENTS_CONTAINER_OF_IMPL_H_

#include <cstddef>
#include <optional>

#include "absl/container/flat_hash_set.h"
#include "absl/random/bit_gen_ref.h"
#include "absl/status/status.h"
#include "./fuzztest/internal/domains/container_of_impl.h"
#include "./fuzztest/internal/domains/domain_base.h"
#include "./fuzztest/internal/meta.h"
#include "./fuzztest/internal/serialization.h"

namespace fuzztest::internal {

UniqueDomainValueT;

UniqueDomain;

// UniqueElementsContainerImpl supports producing containers of type `T`, with
// elements of type `E` from domain `InnerDomain inner`, with a guarantee that
// each element of the container has a unique value from `InnerDomain`. The
// guarantee is provided by using a `absl::flat_hash_set<E>` as our corpus_type,
// which is (effectively) produced by `UnorderedSetOf(inner)`.
template <typename T, typename InnerDomain>
class UniqueElementsContainerImpl
    : public domain_implementor::DomainBase<
          UniqueElementsContainerImpl<T, InnerDomain>, T,
          corpus_type_t<UniqueDomain<InnerDomain>>> { … };

}  // namespace fuzztest::internal

#endif  // FUZZTEST_FUZZTEST_INTERNAL_DOMAINS_UNIQUE_ELEMENTS_CONTAINER_OF_IMPL_H_