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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.
*/
/**
* @file IndexIterator.h
* @brief This file contains IndexIterator class
* @ingroup COM_AI_RUNTIME
*/
#ifndef __NNFW_MISC_KERNEL_INDEX_ITERATOR_H__
#define __NNFW_MISC_KERNEL_INDEX_ITERATOR_H__
#include "misc/kernel/Shape.h"
namespace nnfw
{
namespace misc
{
namespace kernel
{
/**
* @brief Class to iterate Callable with Index of kernel
*/
class IndexIterator
{
public:
/**
* @brief Construct IndexIterator object with Shape of kernel
* @param[in] shape Shape reference of feature
*/
IndexIterator(const Shape &shape) : _shape{shape}
{
// DO NOTHING
}
public:
/**
* @brief Call a function iterated
* @param[in] cb A callback function
* @return Current IndexIterator object
*/
template <typename Callable> IndexIterator &iter(Callable cb)
{
for (int32_t nth = 0; nth < _shape.N; ++nth)
{
for (int32_t ch = 0; ch < _shape.C; ++ch)
{
for (int32_t row = 0; row < _shape.H; ++row)
{
for (int32_t col = 0; col < _shape.W; ++col)
{
cb(nth, ch, row, col);
}
}
}
}
return (*this);
}
private:
const Shape _shape; /**< Shape for kernel */
};
/**
* @brief Create an object of IndexIterator for kernel
* @param[in] shape reference of feature
* @return Created IndexIterator object
*/
inline IndexIterator iterate(const Shape &shape) { return IndexIterator{shape}; }
/**
* @brief Call a function iterated using IndexIterator of kernel
* Overloaded operator<<
* @param[in] it An IndexIterator reference
* @param[in] cb A callback function
* @return Created IndexIterator object
*/
template <typename Callable> IndexIterator &operator<<(IndexIterator &&it, Callable cb)
{
return it.iter(cb);
}
} // namespace kernel
} // namespace misc
} // namespace nnfw
#endif // __NNFW_MISC_FEATURE_INDEX_ITERATOR_H__
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