31 lines
837 B
C++
31 lines
837 B
C++
//
|
|
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
#pragma once
|
|
|
|
namespace td {
|
|
|
|
template <class FunctionT>
|
|
struct member_function_class;
|
|
|
|
template <class ReturnType, class Type, class... Args>
|
|
struct member_function_class<ReturnType (Type::*)(Args...)> {
|
|
using type = Type;
|
|
static constexpr size_t argument_count() {
|
|
return sizeof...(Args);
|
|
}
|
|
};
|
|
|
|
template <class FunctionT>
|
|
using member_function_class_t = typename member_function_class<FunctionT>::type;
|
|
|
|
template <class FunctionT>
|
|
constexpr size_t member_function_argument_count() {
|
|
return member_function_class<FunctionT>::argument_count();
|
|
}
|
|
|
|
} // namespace td
|