mirror of
https://github.com/scylladb/scylladb.git
synced 2026-04-21 17:10:35 +00:00
122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
/*
|
|
* Copyright (C) 2020-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* This file is part of Scylla.
|
|
*
|
|
* Scylla is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Scylla 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#pragma once
|
|
|
|
#include <ostream>
|
|
#include <functional>
|
|
#include "utils/UUID.hh"
|
|
|
|
namespace raft {
|
|
namespace internal {
|
|
|
|
template<typename Tag>
|
|
class tagged_uint64 {
|
|
uint64_t _val;
|
|
public:
|
|
tagged_uint64() : _val(0) {}
|
|
explicit tagged_uint64(uint64_t v) : _val(v) {}
|
|
tagged_uint64(const tagged_uint64&) = default;
|
|
tagged_uint64(tagged_uint64&&) = default;
|
|
tagged_uint64& operator=(const tagged_uint64&) = default;
|
|
auto operator<=>(const tagged_uint64&) const = default;
|
|
explicit operator bool() const { return _val != 0; }
|
|
|
|
uint64_t get_value() const {
|
|
return _val;
|
|
}
|
|
operator uint64_t() const {
|
|
return get_value();
|
|
}
|
|
tagged_uint64& operator++() { // pre increment
|
|
++_val;
|
|
return *this;
|
|
}
|
|
tagged_uint64 operator++(int) { // post increment
|
|
uint64_t v = _val++;
|
|
return tagged_uint64(v);
|
|
}
|
|
tagged_uint64& operator--() { // pre decrement
|
|
--_val;
|
|
return *this;
|
|
}
|
|
tagged_uint64 operator--(int) { // post decrement
|
|
uint64_t v = _val--;
|
|
return tagged_uint64(v);
|
|
}
|
|
tagged_uint64 operator+(const tagged_uint64& o) const {
|
|
return tagged_uint64(_val + o._val);
|
|
}
|
|
tagged_uint64 operator-(const tagged_uint64& o) const {
|
|
return tagged_uint64(_val - o._val);
|
|
}
|
|
friend std::ostream& operator<<(std::ostream& os, const tagged_uint64<Tag>& u) {
|
|
os << u._val;
|
|
return os;
|
|
}
|
|
};
|
|
|
|
template<typename Tag>
|
|
struct tagged_id {
|
|
utils::UUID id;
|
|
bool operator==(const tagged_id& o) const {
|
|
return id == o.id;
|
|
}
|
|
bool operator<(const tagged_id& o) const {
|
|
return id < o.id;
|
|
}
|
|
explicit operator bool() const {
|
|
// The default constructor sets the id to nil, which is
|
|
// guaranteed to not match any valid id.
|
|
return id != utils::UUID();
|
|
}
|
|
static tagged_id create_random_id() { return tagged_id{utils::make_random_uuid()}; }
|
|
explicit tagged_id(const utils::UUID& uuid) : id(uuid) {}
|
|
tagged_id() = default;
|
|
};
|
|
|
|
template<typename Tag>
|
|
std::ostream& operator<<(std::ostream& os, const tagged_id<Tag>& id) {
|
|
os << id.id;
|
|
return os;
|
|
}
|
|
|
|
} // end of namespace internal
|
|
} // end of namespace raft
|
|
|
|
namespace std {
|
|
|
|
template<typename Tag>
|
|
struct hash<raft::internal::tagged_id<Tag>> {
|
|
size_t operator()(const raft::internal::tagged_id<Tag>& id) const {
|
|
return hash<utils::UUID>()(id.id);
|
|
}
|
|
};
|
|
|
|
template<typename Tag>
|
|
struct hash<raft::internal::tagged_uint64<Tag>> {
|
|
size_t operator()(const raft::internal::tagged_uint64<Tag>& val) const {
|
|
return hash<uint64_t>()(val);
|
|
}
|
|
};
|
|
|
|
} // end of namespace std
|
|
|