detect.h

//
// Copyright 2017 - 2024 (C). Alex Robenko. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#pragma once
 
#include <type_traits>
#include <utility>
 
namespace comms
{
 
namespace details
{
 
template <class T, class R = void>
struct EnableIfHasInterfaceOptions { using Type = R; };
 
template <class T, class Enable = void>
struct HasInterfaceOptions
{
    static const bool Value = false;
};
 
template <class T>
struct HasInterfaceOptions<T, typename EnableIfHasInterfaceOptions<typename T::InterfaceOptions>::Type>
{
    static const bool Value = true;
};
 
template <class T>
constexpr bool hasInterfaceOptions()
{
    return HasInterfaceOptions<T>::Value;
}
 
template <class T, class R = void>
struct EnableIfHasImplOptions { using Type = R; };
 
template <class T, class Enable = void>
struct HasImplOptions
{
    static const bool Value = false;
};
 
template <class T>
struct HasImplOptions<T, typename EnableIfHasImplOptions<typename T::ImplOptions>::Type>
{
    static const bool Value = true;
};
 
template <class T>
constexpr bool hasImplOptions()
{
    return HasImplOptions<T>::Value;
}
 
template <class T, class R = void>
struct EnableIfHasElementType { using Type = R; };
 
template <class T, class Enable = void>
struct HasElementType
{
    static const bool Value = false;
};
 
template <class T>
struct HasElementType<T, typename EnableIfHasElementType<typename T::element_type>::Type>
{
    static const bool Value = true;
};
 
template <class T>
constexpr bool hasElementType()
{
    return HasElementType<T>::Value;
}
 
} // namespace details
 
} // namespace comms