Georgios Pinitas | d8734b5 | 2017-12-22 15:27:52 +0000 | [diff] [blame] | 1 | /* |
Sang-Hoon Park | 68dd25f | 2020-10-19 16:00:11 +0100 | [diff] [blame] | 2 | * Copyright (c) 2018-2020 Arm Limited. |
Georgios Pinitas | d8734b5 | 2017-12-22 15:27:52 +0000 | [diff] [blame] | 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 | */ |
Michalis Spyrou | f464337 | 2019-11-29 16:17:13 +0000 | [diff] [blame] | 24 | #ifndef ARM_COMPUTE_MISC_CAST_H |
| 25 | #define ARM_COMPUTE_MISC_CAST_H |
Georgios Pinitas | d8734b5 | 2017-12-22 15:27:52 +0000 | [diff] [blame] | 26 | |
| 27 | #include "arm_compute/core/Error.h" |
| 28 | |
| 29 | namespace arm_compute |
| 30 | { |
| 31 | namespace utils |
| 32 | { |
| 33 | namespace cast |
| 34 | { |
| 35 | /** Polymorphic cast between two types |
| 36 | * |
| 37 | * @warning Will throw an exception if cast cannot take place |
| 38 | * |
| 39 | * @tparam Target Target to cast type |
| 40 | * @tparam Source Source from cast type |
| 41 | * |
| 42 | * @param[in] v Value to cast |
| 43 | * |
Georgios Pinitas | df31036 | 2018-11-14 13:16:56 +0000 | [diff] [blame] | 44 | * @return The casted value |
Georgios Pinitas | d8734b5 | 2017-12-22 15:27:52 +0000 | [diff] [blame] | 45 | */ |
| 46 | template <typename Target, typename Source> |
| 47 | inline Target polymorphic_cast(Source *v) |
| 48 | { |
| 49 | if(dynamic_cast<Target>(v) == nullptr) |
| 50 | { |
Michalis Spyrou | 323ce0f | 2018-11-30 16:30:43 +0000 | [diff] [blame] | 51 | ARM_COMPUTE_THROW(std::bad_cast()); |
Georgios Pinitas | d8734b5 | 2017-12-22 15:27:52 +0000 | [diff] [blame] | 52 | } |
| 53 | return static_cast<Target>(v); |
| 54 | } |
| 55 | |
| 56 | /** Polymorphic down cast between two types |
| 57 | * |
| 58 | * @warning Will assert if cannot take place |
| 59 | * |
| 60 | * @tparam Target Target to cast type |
| 61 | * @tparam Source Source from cast type |
| 62 | * |
| 63 | * @param[in] v Value to cast |
| 64 | * |
Georgios Pinitas | df31036 | 2018-11-14 13:16:56 +0000 | [diff] [blame] | 65 | * @return The casted value |
Georgios Pinitas | d8734b5 | 2017-12-22 15:27:52 +0000 | [diff] [blame] | 66 | */ |
| 67 | template <typename Target, typename Source> |
| 68 | inline Target polymorphic_downcast(Source *v) |
| 69 | { |
| 70 | ARM_COMPUTE_ERROR_ON(dynamic_cast<Target>(v) != static_cast<Target>(v)); |
| 71 | return static_cast<Target>(v); |
| 72 | } |
Georgios Pinitas | df31036 | 2018-11-14 13:16:56 +0000 | [diff] [blame] | 73 | |
| 74 | /** Polymorphic cast between two unique pointer types |
| 75 | * |
| 76 | * @warning Will throw an exception if cast cannot take place |
| 77 | * |
| 78 | * @tparam Target Target to cast type |
| 79 | * @tparam Source Source from cast type |
| 80 | * @tparam Deleter Deleter function type |
| 81 | * |
| 82 | * @param[in] v Value to cast |
| 83 | * |
| 84 | * @return The casted value |
| 85 | */ |
| 86 | template <typename Target, typename Source, typename Deleter> |
| 87 | std::unique_ptr<Target, Deleter> polymorphic_cast_unique_ptr(std::unique_ptr<Source, Deleter> &&v) |
| 88 | { |
| 89 | if(dynamic_cast<Target *>(v.get()) == nullptr) |
| 90 | { |
Michalis Spyrou | 323ce0f | 2018-11-30 16:30:43 +0000 | [diff] [blame] | 91 | ARM_COMPUTE_THROW(std::bad_cast()); |
Georgios Pinitas | df31036 | 2018-11-14 13:16:56 +0000 | [diff] [blame] | 92 | } |
| 93 | auto r = static_cast<Target *>(v.release()); |
| 94 | return std::unique_ptr<Target, Deleter>(r, std::move(v.get_deleter())); |
| 95 | } |
| 96 | |
| 97 | /** Polymorphic down cast between two unique pointer types |
| 98 | * |
| 99 | * @warning Will assert if cannot take place |
| 100 | * |
| 101 | * @tparam Target Target to cast type |
| 102 | * @tparam Source Source from cast type |
| 103 | * @tparam Deleter Deleter function type |
| 104 | * |
| 105 | * @param[in] v Value to cast |
| 106 | * |
| 107 | * @return The casted value |
| 108 | */ |
| 109 | template <typename Target, typename Source, typename Deleter> |
| 110 | std::unique_ptr<Target, Deleter> polymorphic_downcast_unique_ptr(std::unique_ptr<Source, Deleter> &&v) |
| 111 | { |
| 112 | ARM_COMPUTE_ERROR_ON(dynamic_cast<Target *>(v.get()) != static_cast<Target *>(v.get())); |
| 113 | auto r = static_cast<Target *>(v.release()); |
| 114 | return std::unique_ptr<Target, Deleter>(r, std::move(v.get_deleter())); |
| 115 | } |
Georgios Pinitas | d8734b5 | 2017-12-22 15:27:52 +0000 | [diff] [blame] | 116 | } // namespace cast |
| 117 | } // namespace utils |
| 118 | } // namespace arm_compute |
Michalis Spyrou | f464337 | 2019-11-29 16:17:13 +0000 | [diff] [blame] | 119 | #endif /* ARM_COMPUTE_MISC_CAST_H */ |