constant_vectorexpression.h

// Description: Constant vector-expression
// Documentation: vectorexpression.txt

#ifndef PASTELSYS_CONSTANT_VECTOREXPRESSION_H
#define PASTELSYS_CONSTANT_VECTOREXPRESSION_H

#include "pastel/sys/vector/vectorexpression.h"

namespace Pastel
{

    template <
        typename Real,
        integer N>
    class VectorConstant
        : public VectorExpression<Real, N, VectorConstant<Real, N> >
    {
    public:
        using StorageType = const VectorConstant;

        VectorConstant(
            const Real& that,
            integer size)
            : data_(that)
            , size_(size)
        {
        }

        Real operator[](integer index) const
        {
            unused(index);
            return data_;
        }

        integer size() const
        {
            return size_;
        }

        bool involves(
            const void* memoryBegin, const void* memoryEnd) const
        {
            return false;
        }

        bool evaluateBeforeAssignment(
            const void* memoryBegin, const void* memoryEnd) const
        {
            return false;
        }

    private:
        Real data_;
        integer size_;
    };

}

#endif