is_tag.h

// Description: Returns whether a type is tag.

#ifndef PASTELSYS_IS_TAG_H
#define PASTELSYS_IS_TAG_H

#include "pastel/sys/generic/tag.h"

#include <type_traits>

namespace Pastel
{

    namespace IsTag_
    {

        template <typename Type>
        struct IsTag_F_
            : std::false_type
        {};

        template <tag_integer Hash>
        struct IsTag_F_<Tag<Hash>>
            : std::true_type
        {};

    }

    template <typename Type>
    using IsTag_F = 
        IsTag_::IsTag_F_<
            std::remove_cv_t<
                std::remove_reference_t<Type>
            >
        >;

    template <typename Type>
    using IsTag = 
        typename IsTag_F<Type>::type;

}

#endif