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/*
* 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_BUFFER_REF_H_
#define FLATBUFFERS_BUFFER_REF_H_
#include "flatbuffers/base.h"
#include "flatbuffers/verifier.h"
namespace flatbuffers {
// Convenient way to bundle a buffer and its length, to pass it around
// typed by its root.
// A BufferRef does not own its buffer.
struct BufferRefBase {}; // for std::is_base_of
template<typename T> struct BufferRef : BufferRefBase {
BufferRef() : buf(nullptr), len(0), must_free(false) {}
BufferRef(uint8_t *_buf, uoffset_t _len)
: buf(_buf), len(_len), must_free(false) {}
~BufferRef() {
if (must_free) free(buf);
}
const T *GetRoot() const { return flatbuffers::GetRoot<T>(buf); }
bool Verify() {
Verifier verifier(buf, len);
return verifier.VerifyBuffer<T>(nullptr);
}
uint8_t *buf;
uoffset_t len;
bool must_free;
};
} // namespace flatbuffers
#endif // FLATBUFFERS_BUFFER_REF_H_
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