mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-05-19 01:30:46 +00:00
112 lines
4.2 KiB
C++
112 lines
4.2 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <vapours/common.hpp>
|
|
#include <vapours/assert.hpp>
|
|
|
|
namespace ams::util {
|
|
|
|
template<typename T>
|
|
class IFunction;
|
|
|
|
namespace impl {
|
|
|
|
template<typename>
|
|
struct GetIFunctionTypeForObject;
|
|
|
|
template<typename F, typename R, typename... Args>
|
|
struct GetIFunctionTypeForObject<R (F::*)(Args...)> { using Type = R(Args...); };
|
|
|
|
template<typename F, typename R, typename... Args>
|
|
struct GetIFunctionTypeForObject<R (F::*)(Args...) const> { using Type = R(Args...); };
|
|
|
|
template<typename>
|
|
struct GetIFunctionType;
|
|
|
|
template<typename R, typename... Args>
|
|
struct GetIFunctionType<R(Args...)> { using Type = R(Args...); };
|
|
|
|
template<typename R, typename... Args>
|
|
struct GetIFunctionType<R(*)(Args...)> : public GetIFunctionType<R(Args...)>{};
|
|
|
|
template<typename F>
|
|
struct GetIFunctionType<std::reference_wrapper<F>> : public GetIFunctionType<F>{};
|
|
|
|
template<typename F>
|
|
struct GetIFunctionType : public GetIFunctionTypeForObject<decltype(&F::operator())>{};
|
|
|
|
template<typename T, typename F, typename Enabled = void>
|
|
class Function;
|
|
|
|
template<typename R, typename... Args, typename F>
|
|
class Function<R(Args...), F, typename std::enable_if<!(std::is_class<F>::value && !std::is_final<F>::value)>::type> final : public IFunction<R(Args...)> {
|
|
private:
|
|
F m_f;
|
|
public:
|
|
constexpr explicit Function(F f) : m_f(std::move(f)) { /* ... */}
|
|
constexpr virtual ~Function() override { /* ... */ }
|
|
|
|
constexpr virtual R operator()(Args... args) const override final {
|
|
return m_f(std::forward<Args>(args)...);
|
|
}
|
|
};
|
|
|
|
template<typename R, typename... Args, typename F>
|
|
class Function<R(Args...), F, typename std::enable_if<std::is_class<F>::value && !std::is_final<F>::value>::type> final : public IFunction<R(Args...)>, private F {
|
|
public:
|
|
constexpr explicit Function(F f) : F(std::move(f)) { /* ... */}
|
|
constexpr virtual ~Function() override { /* ... */ }
|
|
|
|
constexpr virtual R operator()(Args... args) const override final {
|
|
return static_cast<const F &>(*this).operator()(std::forward<Args>(args)...);
|
|
}
|
|
};
|
|
|
|
template<typename I, typename F>
|
|
constexpr ALWAYS_INLINE auto MakeIFunctionExplicitly(F f) {
|
|
using FunctionType = ::ams::util::impl::Function<I, typename std::decay<F>::type>;
|
|
return FunctionType{ std::move(f) };
|
|
}
|
|
|
|
template<typename I, typename T, typename R>
|
|
constexpr ALWAYS_INLINE auto MakeIFunctionExplicitly(R T::*f) {
|
|
return MakeIFunctionExplicitly<I>(std::mem_fn(f));
|
|
}
|
|
|
|
}
|
|
|
|
template<typename R, typename... Args>
|
|
class IFunction<R(Args...)> {
|
|
protected:
|
|
constexpr virtual ~IFunction() { /* ... */ };
|
|
public:
|
|
constexpr virtual R operator()(Args... args) const = 0;
|
|
|
|
template<typename F>
|
|
static constexpr ALWAYS_INLINE auto Make(F f) {
|
|
return ::ams::util::impl::MakeIFunctionExplicitly<R(Args...)>(std::move(f));
|
|
}
|
|
};
|
|
|
|
template<typename F, typename = typename std::enable_if<!std::is_member_pointer<F>::value>::type>
|
|
constexpr ALWAYS_INLINE auto MakeIFunction(F f) {
|
|
static_assert(!std::is_member_pointer<F>::value);
|
|
|
|
return IFunction<typename ::ams::util::impl::GetIFunctionType<typename std::decay<F>::type>::Type>::Make(std::move(f));
|
|
}
|
|
|
|
} |