// // Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019 // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #pragma once #include "td/utils/common.h" #include "td/utils/StringBuilder.h" #include <functional> #include <type_traits> namespace td { class UserId { int32 id = 0; public: UserId() = default; explicit UserId(int32 user_id) : id(user_id) { } template <class T, typename = std::enable_if_t<std::is_convertible<T, int32>::value>> UserId(T user_id) = delete; bool is_valid() const { return id > 0; } int32 get() const { return id; } bool operator==(const UserId &other) const { return id == other.id; } bool operator!=(const UserId &other) const { return id != other.id; } template <class StorerT> void store(StorerT &storer) const { storer.store_int(id); } template <class ParserT> void parse(ParserT &parser) { id = parser.fetch_int(); } }; struct UserIdHash { std::size_t operator()(UserId user_id) const { return std::hash<int32>()(user_id.get()); } }; inline StringBuilder &operator<<(StringBuilder &string_builder, UserId user_id) { return string_builder << "user " << user_id.get(); } } // namespace td