67 lines
1.4 KiB
C++
67 lines
1.4 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/utils/common.h"
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#include "td/utils/HashTableUtils.h"
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namespace td {
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template <class KeyT>
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struct SetNode {
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using public_key_type = KeyT;
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using public_type = const KeyT;
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using second_type = KeyT; // TODO: remove second_type?
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KeyT first{};
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const KeyT &key() const {
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return first;
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}
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const KeyT &get_public() {
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return first;
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}
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SetNode() = default;
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explicit SetNode(KeyT key) : first(std::move(key)) {
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}
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SetNode(const SetNode &other) = delete;
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SetNode &operator=(const SetNode &other) = delete;
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SetNode(SetNode &&other) noexcept {
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*this = std::move(other);
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}
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void operator=(SetNode &&other) noexcept {
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DCHECK(empty());
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DCHECK(!other.empty());
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first = std::move(other.first);
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other.first = KeyT{};
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}
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~SetNode() = default;
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void copy_from(const SetNode &other) {
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DCHECK(empty());
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first = other.first;
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DCHECK(!empty());
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}
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bool empty() const {
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return is_hash_table_key_empty(first);
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}
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void clear() {
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first = KeyT();
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DCHECK(empty());
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}
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void emplace(KeyT key) {
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first = std::move(key);
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}
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};
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} // namespace td
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