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/*
* Copyright (c) 2017-2020 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ARM_COMPUTE_TEST_DATASET_RANGE
#define ARM_COMPUTE_TEST_DATASET_RANGE
#include "Dataset.h"
#include "support/StringSupport.h"
#include <string>
#include <tuple>
#include <type_traits>
#include <utility>
namespace arm_compute
{
namespace test
{
namespace framework
{
namespace dataset
{
/** Implementation of a dataset created from a range of values.
*
* The range is inclusive of the first value but exclusive of the last, i.e. [start, end).
*/
template <typename T>
class RangeDataset final : public NamedDataset
{
public:
/** Construct dataset with given name and values in the specified range.
*
* @param[in] name Description of the values.
* @param[in] start Begin of the range.
* @param[in] end End of the range.
* @param[in] step Step size.
*/
RangeDataset(std::string name, T start, T end, T step = 1)
: NamedDataset{ std::move(name) }, _start{ start }, _end{ end }, _step{ step }
{
}
/** Allow instances of this class to be move constructed */
RangeDataset(RangeDataset &&) = default;
/** Type of the dataset. */
using type = std::tuple<T>;
/** Iterator for the dataset. */
struct iterator
{
/** Construct an iterator.
*
* @param[in] name Dataset name.
* @param[in] start Dataset start value.
* @param[in] step Dataset step size.
*/
iterator(std::string name, T start, T step)
: _name{ name }, _value{ start }, _step{ step }
{
}
/** Get the description of the current value.
*
* @return description of the current value.
*/
std::string description() const
{
using support::cpp11::to_string;
return _name + "=" + to_string(_value);
}
/** Get the value of the iterator.
*
* @return the value of the iterator.
*/
RangeDataset::type operator*() const
{
return std::make_tuple(_value);
}
/** Inrement the iterator.
*
* @return *this;
*/
iterator &operator++()
{
_value += _step;
return *this;
}
private:
std::string _name;
T _value;
T _step;
};
/** Iterator pointing at the begin of the dataset.
*
* @return Iterator for the dataset.
*/
iterator begin() const
{
return iterator(name(), _start, _step);
}
/** Size of the dataset.
*
* @return Number of values in the dataset.
*/
int size() const
{
return (_end - _start) / std::abs(_step);
}
private:
T _start;
T _end;
T _step;
};
/** Helper function to create a @ref RangeDataset.
*
* @param[in] name Name of the dataset.
* @param[in] start Begin of the range.
* @param[in] end End of the range.
* @param[in] step Step size.
*
* @return A range dataset.
*/
template <typename T>
RangeDataset<T> make(std::string name, T start, T end, T step = 1)
{
return RangeDataset<T>(std::move(name), start, end, step);
}
} // namespace dataset
} // namespace framework
} // namespace test
} // namespace arm_compute
#endif /* ARM_COMPUTE_TEST_DATASET_RANGE */
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