ArrayFunctionObject.h

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//
//
/*
    Copyright (C) 2000- 2009, Hammersmith Imanet Ltd
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0

    See STIR/LICENSE.txt for details
*/

#ifndef __stir_ArrayFunctionObject_H__
#define __stir_ArrayFunctionObject_H__

#include "stir/Succeeded.h"

START_NAMESPACE_STIR

template <int num_dimensions, typename elemT>
class Array;
template <int num_dimensions>
class IndexRange;
template <int num_dimensions, typename elemT>
class ArrayFunctionObject
{
public:
  virtual ~ArrayFunctionObject() {}

  virtual void operator()(Array<num_dimensions, elemT>& array) const = 0;

  virtual void operator()(Array<num_dimensions, elemT>& out_array, const Array<num_dimensions, elemT>& in_array) const = 0;

  virtual bool is_trivial() const = 0;


  virtual Succeeded get_influencing_indices(IndexRange<num_dimensions>& influencing_indices,
                                            const IndexRange<num_dimensions>& output_indices) const
  {
    return Succeeded::no;
  }


  virtual Succeeded get_influenced_indices(IndexRange<num_dimensions>& influenced_indices,
                                           const IndexRange<num_dimensions>& input_indices) const
  {
    return Succeeded::no;
  }
};

END_NAMESPACE_STIR

#endif