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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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 GAPIC_ID_H
#define GAPIC_ID_H
#include <functional>
#include <stdint.h>
namespace gapic {
// Id is a 20-byte unique identifier.
struct Id {
// Construct an Id with the hash of the given memory address.
static Id Hash(const void* ptr, uint64_t size);
bool operator == (const Id& rhs) const;
inline operator uint8_t*();
inline operator const uint8_t*() const;
uint8_t data[20];
};
inline Id::operator uint8_t*() {
return data;
}
inline Id::operator const uint8_t*() const {
return data;
}
} // namespace gapic
namespace std {
template <> struct hash<gapic::Id> {
inline size_t operator()(const gapic::Id& id) const {
return *reinterpret_cast<const size_t*>(id.data);
}
};
} // namespace std
#endif // GAPIC_ID_H