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/* Copyright 2013 10gen Inc.
*
* 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.
*/
#pragma once
#include <vector>
#include "mongo/platform/cstdint.h"
namespace mongo {
namespace mutablebson {
// A damage event represents a change of size 'size' byte at starting at offset
// 'target_offset' in some target buffer, with the replacement data being 'size' bytes of
// data from the 'source' offset. The base addresses against which these offsets are to be
// applied are not captured here.
struct DamageEvent {
typedef uint32_t OffsetSizeType;
// Offset of source data (in some buffer held elsewhere).
OffsetSizeType sourceOffset;
// Offset of target data (in some buffer held elsewhere).
OffsetSizeType targetOffset;
// Size of the damage region.
size_t size;
};
typedef std::vector<DamageEvent> DamageVector;
} // namespace mutablebson
} // namespace mongo
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