ImageExprCalculator.h

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#ifndef IMAGEANALYSIS_IMAGEEXPRCALCULATOR_H
#define IMAGEANALYSIS_IMAGEEXPRCALCULATOR_H

#include <casa/namespace.h>

namespace casa {

class String;

template <class T> class ImageExprCalculator {
        // <summary>
        // Top level interface for computing the results of an image expression
        // </summary>

        // <reviewed reviewer="" date="" tests="" demos="">
        // </reviewed>

        // <prerequisite>
        // </prerequisite>

        // <etymology>
        // </etymology>

        // <synopsis>
        // </synopsis>

public:

    ImageExprCalculator() = delete;

    // expression is the lattice expression to compute
        ImageExprCalculator(
                const String& expression, const String& outname, Bool overwrite
        );

        ~ImageExprCalculator() {}

        // the image from which to copy metadata, including the coordinate system,
        // imageInfo() and miscInfo()
        void setCopyMetaDataFromImage(const String& name) { _copyMetaDataFromImage = name; }

        String getClass() const { const static String s = "ImageExprCalculator"; return s; }

        // Compute the expression and return the image.
        SPIIT compute() const;


        // modify image in place
    static void compute2(SPIIT image, const String& expr, Bool verbose);

private:
    String _copyMetaDataFromImage = "";
    String _expr, _outname;
    Bool _overwrite;
    mutable LogIO _log;

    SPIIT _imagecalc(
        const LatticeExprNode& node, const IPosition& shape,
        const CoordinateSystem& csys, const LELImageCoord* const imCoord
    ) const;

    static void _makeRegionBlock(
        PtrBlock<const ImageRegion*>& regions,
        const Record& Regions
    );

    void _checkImages() const;

    static void _calc(SPIIT image, const LatticeExprNode& node);
};
}

#ifndef AIPS_NO_TEMPLATE_SRC
#include <imageanalysis/ImageAnalysis/ImageExprCalculator.tcc>
#endif

#endif