indicator_trindicator.h

// Description: Indicator trindicator
// DocumentationOf: trindicator_concept.h

#ifndef PASTELSYS_INDICATOR_TRINDICATOR_H
#define PASTELSYS_INDICATOR_TRINDICATOR_H

#include "pastel/sys/indicator/indicator_concept.h"

namespace Pastel
{

    template <typename Indicator>
    class Indicator_Trindicator
    {
    public:
        Indicator_Trindicator(
            const Indicator& indicator)
            : indicator_(indicator)
        {
        }

        template <typename Type>
        integer operator()(const Type& that) const
        {
            static constexpr integer ValueSet[] = {1, -1};
            return ValueSet[indicator_(that)];
        }

    private:
        Indicator indicator_;
    };

    template <typename Indicator>
    Indicator_Trindicator<Indicator> indicatorTrindicator(
        const Indicator& indicator)
    {
        return Indicator_Trindicator<Indicator>(indicator);
    }

}

#endif