index_mapper.h

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/*    This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
 *    See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
 *    Author(s):       Hannah Schreiber
 *
 *    Copyright (C) 2022 Inria
 *
 *    Modification(s):
 *      - YYYY/MM Author: Description of the modification
 */

 
#ifndef PM_INDEX_MAPPER_H
#define PM_INDEX_MAPPER_H
 
namespace Gudhi {
namespace persistence_matrix {
 
// Note: this would be a good candidate for std::optional instead of a mixin as its only role for now
// is to store a map. If this does not change later.

struct Dummy_index_mapper {
  friend void swap([[maybe_unused]] Dummy_index_mapper& d1, [[maybe_unused]] Dummy_index_mapper& d2) noexcept {}
};

template <class Map>
struct Index_mapper {
  using Index_map = Map;
 
  Index_map map_;
 
  friend void swap(Index_mapper& mapper1, Index_mapper& mapper2) noexcept { mapper1.map_.swap(mapper2.map_); }
};
 
}  // namespace persistence_matrix
}  // namespace Gudhi
 
#endif  // PM_INDEX_MAPPER_H