type_traits.hpp

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// ===-- include/psystem/framework/type_traits.hpp -------- -*- C++ -*- --=== //
// Copyright (c) 2014 Matt Bisson.  All rights reserved.

#pragma once
#ifndef PSYSTEM_FRAMEWORK_TYPE_TRAITS_HPP
#define PSYSTEM_FRAMEWORK_TYPE_TRAITS_HPP

#include "platform.hpp"

#include <type_traits>

namespace psystem {

template <typename T> struct has_void_return_type;


/* This is part of the logic of the template metafunction.  We don't need to add
 * this to the generated documentation.
 */
template <typename... Args>
struct has_void_return_type<void(Args...)> : public std::true_type {};
template <typename R, typename... Args>
struct has_void_return_type<R(Args...)> : public std::false_type {};

#ifdef _MSC_VER
#   if 0 // Something else??
// Annoyingly, Win32 calling conventions cause these not to match the type
// specialization...
template <typename... Args>
struct has_void_return_type<void __stdcall(Args...)> : public std::true_type {};
template <typename R, typename... Args>
struct has_void_return_type<R __stdcall(Args...)> : public std::false_type {};
#   endif
#endif


} // namespace psystem

#endif // PSYSTEM_FRAMEWORK_TYPE_TRAITS_HPP