Index.h

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/*
 * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 */
 
#ifndef _MIR_INDEX_H_
#define _MIR_INDEX_H_
 
#include <initializer_list>
#include <cstdint>
#include <ostream>
 
#include "mir/Common.h"
 
#include "adtidas/SmallVector.h"
 
namespace mir
{
 
class Index
{
public:
  Index() = default;
 
  Index(std::initializer_list<int32_t> &&l) noexcept : _indices(std::move(l))
  {
    // DO NOTHING
  }
 
  explicit Index(size_t rank) : _indices(rank) {}
 
  int32_t rank() const { return static_cast<int32_t>(_indices.size()); }
 
  Index &resize(int32_t size);
 
  Index &fill(int32_t index);
 
  int32_t &at(int32_t axis) { return _indices[wrap_index(axis, _indices.size())]; }
 
  int32_t at(int32_t axis) const { return _indices[wrap_index(axis, _indices.size())]; }
 
private:
  adt::small_vector<int32_t, MAX_DIMENSION_COUNT> _indices;
};
 
std::ostream &operator<<(std::ostream &s, const Index &idx);
 
} // namespace mir
 
#endif //_MIR_INDEX_H_