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/*
* GridTools
*
* Copyright (c) 2014-2019, ETH Zurich
* All rights reserved.
*
* Please, refer to the LICENSE file in the root directory.
* SPDX-License-Identifier: BSD-3-Clause
*/
#pragma once
#include <tuple>
#include <type_traits>
namespace cpp_bindgen {
namespace function_traits {
namespace _impl {
template <class>
struct parameter_types_helper;
template <class Ret, class... Args>
struct parameter_types_helper<Ret(Args...)> {
using type = std::tuple<Args...>;
};
template <class>
struct result_type_helper;
template <class Ret, class... Args>
struct result_type_helper<Ret(Args...)> {
using type = Ret;
};
template <class>
struct arity_helper;
template <class Ret, class... Args>
struct arity_helper<Ret(Args...)> {
static constexpr std::size_t value = sizeof...(Args);
};
template <class>
struct nuke_fptr_helper;
template <class Ret, class... Args>
struct nuke_fptr_helper<Ret(Args...)> {
using type = Ret(Args...);
};
template <class Ret, class... Args>
struct nuke_fptr_helper<Ret (&)(Args...)> {
using type = Ret(Args...);
};
template <class Ret, class... Args>
struct nuke_fptr_helper<Ret (*)(Args...)> {
using type = Ret(Args...);
};
template <class F>
using nuke_fptr = typename nuke_fptr_helper<typename std::remove_cv<F>::type>::type;
} // namespace _impl
template <class F>
struct parameter_types : _impl::parameter_types_helper<_impl::nuke_fptr<F>> {};
template <class F>
struct result_type : _impl::result_type_helper<_impl::nuke_fptr<F>> {};
template <class F>
struct arity : _impl::arity_helper<_impl::nuke_fptr<F>> {};
} // namespace function_traits
} // namespace cpp_bindgen
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