tdesktop/Telegram/SourceFiles/core/tl_help.h

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2017-11-20 19:54:05 +00:00
/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
#pragma once
namespace TLHelp {
template <typename Callback>
inline auto VisitChannelParticipant(
const MTPChannelParticipant &p,
Callback &&callback) {
switch (p.type()) {
case mtpc_channelParticipant:
return callback(p.c_channelParticipant());
case mtpc_channelParticipantSelf:
return callback(p.c_channelParticipantSelf());
case mtpc_channelParticipantAdmin:
return callback(p.c_channelParticipantAdmin());
case mtpc_channelParticipantCreator:
return callback(p.c_channelParticipantCreator());
case mtpc_channelParticipantBanned:
return callback(p.c_channelParticipantBanned());
default: Unexpected("Type in VisitChannelParticipant()");
}
}
inline UserId ReadChannelParticipantUserId(const MTPChannelParticipant &p) {
return VisitChannelParticipant(p, [](auto &&data) {
return data.vuser_id.v;
});
}
template <typename Callback>
inline auto VisitChannelParticipants(
const MTPchannels_ChannelParticipants &p,
Callback &&callback) {
switch (p.type()) {
case mtpc_channels_channelParticipants:
return callback(p.c_channels_channelParticipants());
case mtpc_channels_channelParticipantsNotModified:
return callback(p.type());
default: Unexpected("Type in VisitChannelParticipants()");
}
}
} // namespace TLHelp