74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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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/StringBuilder.h"
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#include <functional>
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#include <type_traits>
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namespace td {
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class DialogFilterId {
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int32 id = 0;
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public:
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DialogFilterId() = default;
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explicit constexpr DialogFilterId(int32 dialog_filter_id) : id(dialog_filter_id) {
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}
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template <class T, typename = std::enable_if_t<std::is_convertible<T, int32>::value>>
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DialogFilterId(T dialog_filter_id) = delete;
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static constexpr DialogFilterId min() {
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return DialogFilterId(static_cast<int32>(2));
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}
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static constexpr DialogFilterId max() {
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return DialogFilterId(static_cast<int32>(255));
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}
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bool is_valid() const {
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// don't check max() for greater future flexibility
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return id >= min().get();
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}
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int32 get() const {
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return id;
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}
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bool operator==(const DialogFilterId &other) const {
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return id == other.id;
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}
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bool operator!=(const DialogFilterId &other) const {
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return id != other.id;
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}
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template <class StorerT>
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void store(StorerT &storer) const {
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storer.store_int(id);
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}
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template <class ParserT>
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void parse(ParserT &parser) {
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id = parser.fetch_int();
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}
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};
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struct DialogFilterIdHash {
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std::size_t operator()(DialogFilterId dialog_filter_id) const {
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return std::hash<int32>()(dialog_filter_id.get());
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}
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};
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inline StringBuilder &operator<<(StringBuilder &string_builder, DialogFilterId dialog_filter_id) {
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return string_builder << "chat filter " << dialog_filter_id.get();
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}
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} // namespace td
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