/* ******************************************************************************
 *
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://www.apache.org/licenses/LICENSE-2.0.
 *
 *  See the NOTICE file distributed with this work for additional
 *  information regarding copyright ownership.
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/

//
// @author raver119@gmail.com
//

#ifndef LIBND4J_NDINDEX_H
#define LIBND4J_NDINDEX_H

#include <system/common.h>

#include <vector>

namespace sd {
class SD_LIB_EXPORT NDIndex {
 protected:
  std::vector<LongType> _indices;
  LongType _stride = 1;

 public:
  NDIndex() = default;
  ~NDIndex() = default;

  bool isAll();
  bool isPoint();
  virtual bool isInterval();

  std::vector<LongType>& getIndices();
  LongType stride();

  static NDIndex* all();
  static NDIndex* point(LongType pt);
  static NDIndex* interval(LongType start, LongType end, LongType stride = 1);
};

class SD_LIB_EXPORT NDIndexAll : public NDIndex {
 public:
  NDIndexAll();
  virtual bool isInterval();
  ~NDIndexAll() = default;
};

class SD_LIB_EXPORT NDIndexPoint : public NDIndex {
 public:
  NDIndexPoint(LongType point);
  virtual bool isInterval();
  ~NDIndexPoint() = default;
};

class SD_LIB_EXPORT NDIndexInterval : public NDIndex {
 public:
  NDIndexInterval(LongType start, LongType end, LongType stride = 1);
  virtual bool isInterval();
  ~NDIndexInterval() = default;
};
}  // namespace sd

#endif  // LIBND4J_NDINDEX_H