319 lines
8.0 KiB
C++
319 lines
8.0 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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using BareId = uint64;
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struct PeerIdZeroHelper {
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};
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using PeerIdZero = void(PeerIdZeroHelper::*)();
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template <uint8 Shift>
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struct ChatIdType {
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BareId bare = 0;
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static constexpr BareId kShift = Shift;
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static constexpr BareId kReservedBit = BareId(0x80);
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static_assert((Shift & kReservedBit) == 0, "Last bit is reserved.");
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constexpr ChatIdType() noexcept = default;
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//constexpr ChatIdType(PeerIdZero) noexcept { // UserId id = 0;
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//}
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constexpr ChatIdType(BareId value) noexcept : bare(value) {
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}
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constexpr ChatIdType(int32 value) noexcept : bare(value) { // #TODO ids remove
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}
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constexpr ChatIdType(MTPint value) noexcept : bare(value.v) { // #TODO ids
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}
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[[nodiscard]] constexpr explicit operator bool() const noexcept {
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return (bare != 0);
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}
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[[nodiscard]] constexpr bool operator!() const noexcept {
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return !bare;
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}
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};
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator==(
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ChatIdType<Shift> a,
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ChatIdType<Shift> b) noexcept {
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return (a.bare == b.bare);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator!=(
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ChatIdType<Shift> a,
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ChatIdType<Shift> b) noexcept {
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return (a.bare != b.bare);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator<(
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ChatIdType<Shift> a,
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ChatIdType<Shift> b) noexcept {
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return (a.bare < b.bare);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator>(
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ChatIdType<Shift> a,
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ChatIdType<Shift> b) noexcept {
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return (a.bare > b.bare);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator<=(
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ChatIdType<Shift> a,
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ChatIdType<Shift> b) noexcept {
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return (a.bare <= b.bare);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator>=(
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ChatIdType<Shift> a,
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ChatIdType<Shift> b) noexcept {
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return (a.bare >= b.bare);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator==(
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ChatIdType<Shift> a,
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PeerIdZero) noexcept {
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return (a.bare == 0);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator==(
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PeerIdZero,
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ChatIdType<Shift> a) noexcept {
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return (0 == a.bare);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator!=(
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ChatIdType<Shift> a,
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PeerIdZero) noexcept {
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return (a.bare != 0);
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}
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template <uchar Shift>
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[[nodiscard]] inline constexpr bool operator!=(
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PeerIdZero,
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ChatIdType<Shift> a) noexcept {
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return (0 != a.bare);
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}
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template <uchar Shift>
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bool operator<(ChatIdType<Shift>, PeerIdZero) = delete;
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template <uchar Shift>
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bool operator<(PeerIdZero, ChatIdType<Shift>) = delete;
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template <uchar Shift>
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bool operator>(ChatIdType<Shift>, PeerIdZero) = delete;
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template <uchar Shift>
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bool operator>(PeerIdZero, ChatIdType<Shift>) = delete;
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template <uchar Shift>
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bool operator<=(ChatIdType<Shift>, PeerIdZero) = delete;
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template <uchar Shift>
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bool operator<=(PeerIdZero, ChatIdType<Shift>) = delete;
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template <uchar Shift>
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bool operator>=(ChatIdType<Shift>, PeerIdZero) = delete;
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template <uchar Shift>
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bool operator>=(PeerIdZero, ChatIdType<Shift>) = delete;
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using UserId = ChatIdType<0>;
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using ChatId = ChatIdType<1>;
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using ChannelId = ChatIdType<2>;
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using FakeChatId = ChatIdType<0x7F>;
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inline constexpr auto NoChannel = ChannelId(0);
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struct PeerIdHelper {
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BareId value = 0;
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constexpr PeerIdHelper(BareId value) noexcept : value(value) {
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}
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};
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struct PeerId {
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BareId value = 0;
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static constexpr BareId kChatTypeMask = BareId(0xFFFFFFFFFFFFULL);
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constexpr PeerId() noexcept = default;
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constexpr PeerId(PeerIdZero) noexcept { // PeerId id = 0;
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}
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template <uchar Shift>
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constexpr PeerId(ChatIdType<Shift> id) noexcept
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: value(id.bare | (BareId(Shift) << 48)) {
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}
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// This instead of explicit PeerId(BareId) allows to use both
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// PeerId(uint64(..)) and PeerId(0).
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constexpr PeerId(PeerIdHelper value) noexcept : value(value.value) {
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}
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template <typename SomeChatIdType, BareId = SomeChatIdType::kShift>
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[[nodiscard]] constexpr bool is() const noexcept {
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return ((value >> 48) & BareId(0xFF)) == SomeChatIdType::kShift;
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}
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template <typename SomeChatIdType, BareId = SomeChatIdType::kShift>
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[[nodiscard]] constexpr SomeChatIdType to() const noexcept {
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return is<SomeChatIdType>() ? (value & kChatTypeMask) : 0;
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}
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[[nodiscard]] constexpr explicit operator bool() const noexcept {
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return (value != 0);
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}
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[[nodiscard]] constexpr bool operator!() const noexcept {
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return !value;
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}
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};
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[[nodiscard]] inline constexpr bool operator==(PeerId a, PeerId b) noexcept {
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return (a.value == b.value);
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}
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[[nodiscard]] inline constexpr bool operator!=(PeerId a, PeerId b) noexcept {
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return (a.value != b.value);
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}
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[[nodiscard]] inline constexpr bool operator<(PeerId a, PeerId b) noexcept {
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return (a.value < b.value);
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}
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[[nodiscard]] inline constexpr bool operator>(PeerId a, PeerId b) noexcept {
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return (a.value > b.value);
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}
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[[nodiscard]] inline constexpr bool operator<=(PeerId a, PeerId b) noexcept {
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return (a.value <= b.value);
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}
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[[nodiscard]] inline constexpr bool operator>=(PeerId a, PeerId b) noexcept {
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return (a.value >= b.value);
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}
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[[nodiscard]] inline constexpr bool operator==(
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PeerId a,
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PeerIdZero) noexcept {
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return (a.value == 0);
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}
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[[nodiscard]] inline constexpr bool operator==(
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PeerIdZero,
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PeerId a) noexcept {
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return (0 == a.value);
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}
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[[nodiscard]] inline constexpr bool operator!=(
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PeerId a,
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PeerIdZero) noexcept {
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return (a.value != 0);
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}
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[[nodiscard]] inline constexpr bool operator!=(
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PeerIdZero,
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PeerId a) noexcept {
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return (0 != a.value);
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}
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bool operator<(PeerId, PeerIdZero) = delete;
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bool operator<(PeerIdZero, PeerId) = delete;
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bool operator>(PeerId, PeerIdZero) = delete;
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bool operator>(PeerIdZero, PeerId) = delete;
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bool operator<=(PeerId, PeerIdZero) = delete;
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bool operator<=(PeerIdZero, PeerId) = delete;
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bool operator>=(PeerId, PeerIdZero) = delete;
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bool operator>=(PeerIdZero, PeerId) = delete;
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[[nodiscard]] inline constexpr bool peerIsUser(PeerId id) noexcept {
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return id.is<UserId>();
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}
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[[nodiscard]] inline constexpr bool peerIsChat(PeerId id) noexcept {
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return id.is<ChatId>();
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}
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[[nodiscard]] inline constexpr bool peerIsChannel(PeerId id) noexcept {
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return id.is<ChannelId>();
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}
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[[nodiscard]] inline constexpr PeerId peerFromUser(UserId userId) noexcept {
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return userId;
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}
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[[nodiscard]] inline constexpr PeerId peerFromChat(ChatId chatId) noexcept {
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return chatId;
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}
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[[nodiscard]] inline constexpr PeerId peerFromChannel(
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ChannelId channelId) noexcept {
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return channelId;
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}
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[[nodiscard]] inline constexpr PeerId peerFromUser(MTPint userId) noexcept { // #TODO ids
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return peerFromUser(userId.v);
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}
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[[nodiscard]] inline constexpr PeerId peerFromChat(MTPint chatId) noexcept {
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return peerFromChat(chatId.v);
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}
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[[nodiscard]] inline constexpr PeerId peerFromChannel(
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MTPint channelId) noexcept {
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return peerFromChannel(channelId.v);
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}
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[[nodiscard]] inline constexpr UserId peerToUser(PeerId id) noexcept {
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return id.to<UserId>();
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}
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[[nodiscard]] inline constexpr ChatId peerToChat(PeerId id) noexcept {
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return id.to<ChatId>();
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}
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[[nodiscard]] inline constexpr ChannelId peerToChannel(PeerId id) noexcept {
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return id.to<ChannelId>();
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}
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[[nodiscard]] inline MTPint peerToBareMTPInt(PeerId id) { // #TODO ids
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return MTP_int(id.value & PeerId::kChatTypeMask);
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}
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[[nodiscard]] PeerId peerFromMTP(const MTPPeer &peer);
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[[nodiscard]] MTPpeer peerToMTP(PeerId id);
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// Supports both modern and legacy serializations.
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[[nodiscard]] PeerId DeserializePeerId(quint64 serialized);
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[[nodiscard]] quint64 SerializePeerId(PeerId id);
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namespace std {
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template <uchar Shift>
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struct hash<ChatIdType<Shift>> : private hash<BareId> {
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size_t operator()(ChatIdType<Shift> value) const noexcept {
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return hash<BareId>::operator()(value.bare);
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}
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};
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template <>
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struct hash<PeerId> : private hash<BareId> {
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size_t operator()(PeerId value) const noexcept {
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return hash<BareId>::operator()(value.value);
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}
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};
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} // namespace std
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