tdesktop/Telegram/SourceFiles/base/match_method.h

53 lines
1.3 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include <rpl/details/callable.h>
namespace base {
template <typename Data, typename Method, typename ...Methods>
inline decltype(auto) match_method(
Data &&data,
Method &&method,
Methods &&...methods) {
using namespace rpl::details;
if constexpr (is_callable_plain_v<Method, Data&&>) {
return std::forward<Method>(method)(std::forward<Data>(data));
} else {
return match_method(
std::forward<Data>(data),
std::forward<Methods>(methods)...);
}
}
template <
typename Data1,
typename Data2,
typename Method,
typename ...Methods>
inline decltype(auto) match_method2(
Data1 &&data1,
Data2 &&data2,
Method &&method,
Methods &&...methods) {
using namespace rpl::details;
if constexpr (is_callable_plain_v<Method, Data1&&, Data2&&>) {
return std::forward<Method>(method)(
std::forward<Data1>(data1),
std::forward<Data2>(data2));
} else {
return match_method2(
std::forward<Data1>(data1),
std::forward<Data2>(data2),
std::forward<Methods>(methods)...);
}
}
} // namespace base