ArrayHandlerWithCopyFunc.h

#ifndef LINEARALGEBRA_SRC_MOLPRO_LINALG_ARRAY_ARRAYHANDLERWITHCOPYFUNC_H
#define LINEARALGEBRA_SRC_MOLPRO_LINALG_ARRAY_ARRAYHANDLERWITHCOPYFUNC_H
#include <functional>
#include <molpro/linalg/array/ArrayHandler.h>
#include <utility>
 
namespace molpro::linalg::array {
 
template <class AL, class AR = AL>
class ArrayHandlerWithCopyFunc : public ArrayHandler<AL, AR> {
public:
  using copy_func_type = std::function<AL(const AR &)>;
 
  explicit ArrayHandlerWithCopyFunc(copy_func_type copy_func)
      : ArrayHandler<AL, AR>(), m_copy_func(std::move(copy_func)) {}
 
  AL copy(const AR &source) override {
    this->m_counter->copy++;
    return m_copy_func(source);
  };
  using ArrayHandler<AL, AR>::copy;
 
protected:
  copy_func_type m_copy_func; 
};
 
} // namespace molpro::linalg::array
#endif // LINEARALGEBRA_SRC_MOLPRO_LINALG_ARRAY_ARRAYHANDLERWITHCOPYFUNC_H