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/*
* Copyright (c) 2019 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 __NEURUN_UTIL_COORDINATES_H__
#define __NEURUN_UTIL_COORDINATES_H__
#include <cassert>
#include <stdint.h>
#include <vector>
namespace neurun
{
namespace util
{
/**
* @brief Class to represent position(offset) of tensor.\n
* Assume that the front is higher dimensional.
* i.g. N: 0, C: 1, H: 2, W: 3 for NCHW layout
*/
class Coordinates final
{
public:
static constexpr size_t num_max_dimensions = 4;
public:
/**
* @brief Construct a new Coordinates object
* @param[in] init The initialzer_list with coordinates
* @return
*/
Coordinates(std::initializer_list<int32_t> init) : _coordinates{init}
{
assert(init.size() <= num_max_dimensions);
}
public:
/**
* @brief Set the coordinate of one of the coordinates.
*
* @param[in] dimension Dimension for which the coordinate is set.
* @param[in] Coordinate Coordinate to be set for the dimension.
*/
void set(size_t dimension, int32_t coordinate)
{
assert(dimension < num_max_dimensions);
if (dimension >= _coordinates.size())
{
_coordinates.resize(dimension + 1, 0);
}
_coordinates[dimension] = coordinate;
}
public:
/**
* @brief Return size of coordinates
*
* @return size of coordinates
*/
size_t size() const { return _coordinates.size(); }
public:
int32_t operator[](size_t dimension) const
{
assert(dimension < _coordinates.size());
return _coordinates[dimension];
}
public:
/**
* @brief begin() of const_iterator for this class
*
* @return The first iterator of the coordinates
*/
std::vector<int32_t>::const_iterator begin() const { return _coordinates.begin(); }
/**
* @brief end() of const_iterator for this class
*
* @return The last iterator of the coordinates
*/
std::vector<int32_t>::const_iterator end() const { return _coordinates.end(); }
private:
std::vector<int32_t> _coordinates;
};
} // namespace util
} // namespace neurun
#endif // __NEURUN_UTIL_COORDINATES_H__
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