Mir
lambda_as_function.h
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1/*
2 * Copyright © 2018 Canonical Ltd.
3 *
4 * This program is free software: you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 or 3 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 *
16 * Authored by: Alan Griffiths <alan@octopull.co.uk>
17 */
18
19#ifndef MIRAL_LAMBDA_AS_FUNCTION_H
20#define MIRAL_LAMBDA_AS_FUNCTION_H
21
22#include <functional>
23
24namespace miral
25{
26namespace detail
27{
28template <class F> struct FunctionType;
29
30template<typename Lambda, typename Return, typename... Arg>
31struct FunctionType<Return (Lambda::*)(Arg...)> { using type = std::function<Return(Arg...)>; };
32
33template<typename Lambda, typename Return, typename... Arg>
34struct FunctionType<Return (Lambda::*)(Arg...) const> { using type = std::function<Return(Arg...)>; };
35}
36
37template<typename Lambda>
38auto lambda_as_function(Lambda&& lambda) -> typename detail::FunctionType<decltype(&Lambda::operator())>::type
39{
40 return typename detail::FunctionType<decltype(&Lambda::operator())>::type(std::forward<Lambda>(lambda));
41}
42}
43
44#endif //MIRAL_LAMBDA_AS_FUNCTION_H
Mir Abstraction Layer.
Definition: floating_window_manager.h:29
auto lambda_as_function(Lambda &&lambda) -> typename detail::FunctionType< decltype(&Lambda::operator())>::type
Definition: lambda_as_function.h:38
std::function< Return(Arg...)> type
Definition: lambda_as_function.h:34
std::function< Return(Arg...)> type
Definition: lambda_as_function.h:31
Definition: lambda_as_function.h:28

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