chromium/third_party/flatbuffers/src/include/flatbuffers/verifier.h

/*
 * Copyright 2021 Google Inc. All rights reserved.
 *
 * 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 FLATBUFFERS_VERIFIER_H_
#define FLATBUFFERS_VERIFIER_H_

#include "flatbuffers/base.h"
#include "flatbuffers/vector.h"

namespace flatbuffers {

// Helper class to verify the integrity of a FlatBuffer
template <bool TrackVerifierBufferSize>
class VerifierTemplate FLATBUFFERS_FINAL_CLASS { … };

// Specialization for 64-bit offsets.
template<>
template<>
inline size_t VerifierTemplate<false>::VerifyOffset<uoffset64_t>(
    const size_t start) const { … }
template<>
template<>
inline size_t VerifierTemplate<true>::VerifyOffset<uoffset64_t>(
    const size_t start) const { … }

// Instance of VerifierTemplate that supports GetComputedSize().
SizeVerifier;

// The FLATBUFFERS_TRACK_VERIFIER_BUFFER_SIZE build configuration macro is
// deprecated, and should not be defined, since it is easy to misuse in ways
// that result in ODR violations. Rather than using Verifier and defining
// FLATBUFFERS_TRACK_VERIFIER_BUFFER_SIZE, please use SizeVerifier instead.
#ifdef FLATBUFFERS_TRACK_VERIFIER_BUFFER_SIZE  // Deprecated, see above.
using Verifier = SizeVerifier;
#else
// Instance of VerifierTemplate that is slightly faster, but does not
// support GetComputedSize().
Verifier;
#endif

}  // namespace flatbuffers

#endif  // FLATBUFFERS_VERIFIER_H_