58 lines
2 KiB
C++
58 lines
2 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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#include "data/data_peer_id.h"
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PeerId peerFromMTP(const MTPPeer &peer) {
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return peer.match([](const MTPDpeerUser &data) {
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return peerFromUser(data.vuser_id());
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}, [](const MTPDpeerChat &data) {
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return peerFromChat(data.vchat_id());
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}, [](const MTPDpeerChannel &data) {
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return peerFromChannel(data.vchannel_id());
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});
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}
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MTPpeer peerToMTP(PeerId id) {
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if (peerIsUser(id)) {
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return MTP_peerUser(peerToBareMTPInt(id));
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} else if (peerIsChat(id)) {
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return MTP_peerChat(peerToBareMTPInt(id));
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} else if (peerIsChannel(id)) {
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return MTP_peerChannel(peerToBareMTPInt(id));
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}
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return MTP_peerUser(MTP_long(0));
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}
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PeerId DeserializePeerId(quint64 serialized) {
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const auto flag = (UserId::kReservedBit << 48);
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const auto legacy = !(serialized & (UserId::kReservedBit << 48));
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if (!legacy) {
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return PeerId(serialized & (~flag));
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}
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constexpr auto PeerIdMask = uint64(0xFFFFFFFFULL);
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constexpr auto PeerIdTypeMask = uint64(0xF00000000ULL);
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constexpr auto PeerIdUserShift = uint64(0x000000000ULL);
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constexpr auto PeerIdChatShift = uint64(0x100000000ULL);
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constexpr auto PeerIdChannelShift = uint64(0x200000000ULL);
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constexpr auto PeerIdFakeShift = uint64(0xF00000000ULL);
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return ((serialized & PeerIdTypeMask) == PeerIdUserShift)
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? peerFromUser(UserId(serialized & PeerIdMask))
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: ((serialized & PeerIdTypeMask) == PeerIdChatShift)
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? peerFromChat(ChatId(serialized & PeerIdMask))
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: ((serialized & PeerIdTypeMask) == PeerIdChannelShift)
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? peerFromChannel(ChannelId(serialized & PeerIdMask))
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: ((serialized & PeerIdTypeMask) == PeerIdFakeShift)
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? PeerId(FakeChatId(serialized & PeerIdMask))
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: PeerId(0);
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}
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quint64 SerializePeerId(PeerId id) {
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Expects(!(id.value & (UserId::kReservedBit << 48)));
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return id.value | (UserId::kReservedBit << 48);
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}
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