infinite_counting_input.h

// Description: Infinite counting input
// Documentation: input.txt

#ifndef PASTELSYS_INFINITE_COUNTING_INPUT_H
#define PASTELSYS_INFINITE_COUNTING_INPUT_H

#include "pastel/sys/input/input_concept.h"

namespace Pastel
{

    template <typename Incrementable>
    class Infinite_Counting_Input
    {
    public:
        Infinite_Counting_Input()
        : i_()
        {
        }

        explicit Infinite_Counting_Input(
            const Incrementable& begin)
        : i_(begin)
        {
        }

        integer nHint() const
        {
            return 0;
        }

        bool empty() const
        {
            return false;
        }

        const Incrementable& get() const
        {
            return i_;
        }

        void pop()
        {
            ++i_;
        }

    private:
        Incrementable i_;
    };

    template <typename Incrementable = integer>
    Infinite_Counting_Input<Incrementable> countingInput(
        const Incrementable& begin = Incrementable())
    {
        return Infinite_Counting_Input<Incrementable>(begin);
    }

}

#endif