158 lines
4.3 KiB
C++
158 lines
4.3 KiB
C++
/*
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* Copyright (c) 2017-2018 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef ARM_COMPUTE_TEST_DATASET_ZIP
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#define ARM_COMPUTE_TEST_DATASET_ZIP
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#include "Dataset.h"
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#include <string>
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#include <tuple>
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#include <utility>
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namespace arm_compute
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{
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namespace test
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{
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namespace framework
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{
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namespace dataset
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{
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/** Implementation of a dataset representing pairs of values of the input datasets.
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*
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* For example, for the inputs {1, 2} and {3, 4} this dataset virtually
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* represents the values {(1, 3), (1, 4)}.
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*/
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template <typename T, typename U>
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class ZipDataset : public Dataset
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{
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private:
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using iter1_type = typename T::iterator;
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using iter2_type = typename U::iterator;
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public:
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/** Construct dataset from the given datasets.
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*
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* @param[in] dataset1 First dataset.
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* @param[in] dataset2 Second dataset.
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*/
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ZipDataset(T &&dataset1, U &&dataset2)
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: _dataset1{ std::forward<T>(dataset1) },
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_dataset2{ std::forward<U>(dataset2) }
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{
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}
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/** Allow instances of this class to be move constructed */
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ZipDataset(ZipDataset &&) = default;
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/** Type of the dataset. */
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using type = decltype(std::tuple_cat(*std::declval<iter1_type>(), *std::declval<iter2_type>()));
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/** Iterator for the dataset. */
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struct iterator
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{
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/** Construct an iterator.
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*
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* @param[in] iter1 Iterator 1.
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* @param[in] iter2 Iterator 2.
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*/
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iterator(iter1_type iter1, iter2_type iter2)
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: _iter1{ std::move(iter1) }, _iter2{ std::move(iter2) }
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{
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}
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/** Get the description of the current value.
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*
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* @return description of the current value.
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*/
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std::string description() const
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{
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return _iter1.description() + ":" + _iter2.description();
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}
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/** Get the value of the iterator.
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*
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* @return the value of the iterator.
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*/
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ZipDataset::type operator*() const
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{
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return std::tuple_cat(*_iter1, *_iter2);
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}
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/** Inrement the iterator.
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*
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* @return *this;
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*/
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iterator &operator++()
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{
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++_iter1;
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++_iter2;
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return *this;
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}
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private:
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iter1_type _iter1;
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iter2_type _iter2;
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};
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/** Iterator pointing at the begin of the dataset.
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*
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* @return Iterator for the dataset.
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*/
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iterator begin() const
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{
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return iterator(_dataset1.begin(), _dataset2.begin());
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}
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/** Size of the dataset.
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*
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* @return Number of values in the dataset.
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*/
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int size() const
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{
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return std::min(_dataset1.size(), _dataset2.size());
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}
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private:
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T _dataset1;
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U _dataset2;
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};
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/** Helper function to create a @ref ZipDataset.
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*
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* @param[in] dataset1 First dataset.
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* @param[in] dataset2 Second dataset.
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*
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* @return A zip dataset.
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*/
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template <typename T, typename U>
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ZipDataset<T, U> zip(T &&dataset1, U &&dataset2)
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{
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return ZipDataset<T, U>(std::forward<T>(dataset1), std::forward<U>(dataset2));
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}
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} // namespace dataset
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} // namespace framework
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} // namespace test
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} // namespace arm_compute
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#endif /* ARM_COMPUTE_TEST_DATASET_ZIP */
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