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/**
* Copyright (C) 2015 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <cstdint>
#include <limits>
#include "mongo/util/mongoutils/str.h"
namespace mongo {
class SnapshotName {
public:
explicit SnapshotName(uint64_t value) : _value(value) {}
/**
* Returns a SnapshotName guaranteed to compare < all names of actual snapshots.
*/
static SnapshotName min() {
return SnapshotName(std::numeric_limits<uint64_t>::min());
}
/**
* Returns a SnapshotName guaranteed to compare > all names of actual snapshots.
*/
static SnapshotName max() {
return SnapshotName(std::numeric_limits<uint64_t>::max());
}
/**
* Returns an unsigned number that compares with the same ordering as the SnapshotName.
*/
uint64_t asU64() const {
return _value;
}
std::string toString() const {
return (str::stream() << _value);
}
bool operator==(const SnapshotName& rhs) const {
return _value == rhs._value;
}
bool operator!=(const SnapshotName& rhs) const {
return _value != rhs._value;
}
bool operator<(const SnapshotName& rhs) const {
return _value < rhs._value;
}
bool operator<=(const SnapshotName& rhs) const {
return _value <= rhs._value;
}
bool operator>(const SnapshotName& rhs) const {
return _value > rhs._value;
}
bool operator>=(const SnapshotName& rhs) const {
return _value >= rhs._value;
}
private:
uint64_t _value;
};
}
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