1 /* 2 * Copyright (c) 2017-2020 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 #ifndef ARM_COMPUTE_TEST_DATASET_RANGE 25 #define ARM_COMPUTE_TEST_DATASET_RANGE 26 27 #include "Dataset.h" 28 #include "support/StringSupport.h" 29 30 #include <string> 31 #include <tuple> 32 #include <type_traits> 33 #include <utility> 34 35 namespace arm_compute 36 { 37 namespace test 38 { 39 namespace framework 40 { 41 namespace dataset 42 { 43 /** Implementation of a dataset created from a range of values. 44 * 45 * The range is inclusive of the first value but exclusive of the last, i.e. [start, end). 46 */ 47 template <typename T> 48 class RangeDataset final : public NamedDataset 49 { 50 public: 51 /** Construct dataset with given name and values in the specified range. 52 * 53 * @param[in] name Description of the values. 54 * @param[in] start Begin of the range. 55 * @param[in] end End of the range. 56 * @param[in] step Step size. 57 */ 58 RangeDataset(std::string name, T start, T end, T step = 1) 59 : NamedDataset{ std::move(name) }, _start{ start }, _end{ end }, _step{ step } 60 { 61 } 62 63 /** Allow instances of this class to be move constructed */ 64 RangeDataset(RangeDataset &&) = default; 65 66 /** Type of the dataset. */ 67 using type = std::tuple<T>; 68 69 /** Iterator for the dataset. */ 70 struct iterator 71 { 72 /** Construct an iterator. 73 * 74 * @param[in] name Dataset name. 75 * @param[in] start Dataset start value. 76 * @param[in] step Dataset step size. 77 */ iteratoriterator78 iterator(std::string name, T start, T step) 79 : _name{ name }, _value{ start }, _step{ step } 80 { 81 } 82 83 /** Get the description of the current value. 84 * 85 * @return description of the current value. 86 */ descriptioniterator87 std::string description() const 88 { 89 using support::cpp11::to_string; 90 return _name + "=" + to_string(_value); 91 } 92 93 /** Get the value of the iterator. 94 * 95 * @return the value of the iterator. 96 */ 97 RangeDataset::type operator*() const 98 { 99 return std::make_tuple(_value); 100 } 101 102 /** Inrement the iterator. 103 * 104 * @return *this; 105 */ 106 iterator &operator++() 107 { 108 _value += _step; 109 return *this; 110 } 111 112 private: 113 std::string _name; 114 T _value; 115 T _step; 116 }; 117 118 /** Iterator pointing at the begin of the dataset. 119 * 120 * @return Iterator for the dataset. 121 */ begin()122 iterator begin() const 123 { 124 return iterator(name(), _start, _step); 125 } 126 127 /** Size of the dataset. 128 * 129 * @return Number of values in the dataset. 130 */ size()131 int size() const 132 { 133 return (_end - _start) / std::abs(_step); 134 } 135 136 private: 137 T _start; 138 T _end; 139 T _step; 140 }; 141 142 /** Helper function to create a @ref RangeDataset. 143 * 144 * @param[in] name Name of the dataset. 145 * @param[in] start Begin of the range. 146 * @param[in] end End of the range. 147 * @param[in] step Step size. 148 * 149 * @return A range dataset. 150 */ 151 template <typename T> 152 RangeDataset<T> make(std::string name, T start, T end, T step = 1) 153 { 154 return RangeDataset<T>(std::move(name), start, end, step); 155 } 156 } // namespace dataset 157 } // namespace framework 158 } // namespace test 159 } // namespace arm_compute 160 #endif /* ARM_COMPUTE_TEST_DATASET_RANGE */ 161