1 // 2 // Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021 3 // 4 // Distributed under the Boost Software License, Version 1.0. (See accompanying 5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6 // 7 #pragma once 8 9 #include "td/utils/common.h" 10 #include "td/utils/StringBuilder.h" 11 12 #include <functional> 13 #include <type_traits> 14 15 namespace td { 16 17 class StickerSetId { 18 int64 id = 0; 19 20 public: 21 StickerSetId() = default; 22 StickerSetId(int64 sticker_set_id)23 explicit constexpr StickerSetId(int64 sticker_set_id) : id(sticker_set_id) { 24 } 25 template <class T, typename = std::enable_if_t<std::is_convertible<T, int64>::value>> 26 StickerSetId(T sticker_set_id) = delete; 27 is_valid()28 bool is_valid() const { 29 return id != 0; 30 } 31 get()32 int64 get() const { 33 return id; 34 } 35 36 bool operator==(const StickerSetId &other) const { 37 return id == other.id; 38 } 39 40 bool operator!=(const StickerSetId &other) const { 41 return id != other.id; 42 } 43 }; 44 45 struct StickerSetIdHash { operatorStickerSetIdHash46 std::size_t operator()(StickerSetId sticker_set_id) const { 47 return std::hash<int64>()(sticker_set_id.get()); 48 } 49 }; 50 51 inline StringBuilder &operator<<(StringBuilder &string_builder, StickerSetId sticker_set_id) { 52 return string_builder << "sticker set " << sticker_set_id.get(); 53 } 54 55 } // namespace td 56