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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 __NNFW_UTIL_TENSOR_OBJECT_H__
#define __NNFW_UTIL_TENSOR_OBJECT_H__
#include "util/tensor/Shape.h"
#include "util/tensor/Index.h"
#include "util/tensor/IndexIterator.h"
#include "util/tensor/NonIncreasingStride.h"
#include "util/tensor/Reader.h"
#include <vector>
namespace nnfw
{
namespace util
{
namespace tensor
{
template<typename T> class Object final : public Reader<T>
{
public:
using Generator = std::function<T (const Shape &shape, const Index &index)>;
public:
Object(const Shape &shape, const Generator &fn) : _shape{shape}
{
// Set 'stride'
_stride.init(shape);
// Pre-allocate buffer
_values.resize(_shape.dim(0) * _stride.at(0));
// Set 'value'
iterate(_shape) << [this, &fn] (const Index &index)
{
_values.at(_stride.offset(index)) = fn(_shape, index);
};
}
public:
const Shape &shape(void) const { return _shape; }
public:
T at(const Index &index) const override
{
return _values.at(_stride.offset(index));
}
private:
Shape _shape;
NonIncreasingStride _stride;
private:
std::vector<T> _values;
};
} // namespace tensor
} // namespace util
} // namespace nnfw
#endif // __NNFW_UTIL_FEATURE_OBJECT_H__
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