1 /* 2 * Copyright (c) 2018-2020 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_MISC_CRTP_H 25 #define ARM_COMPUTE_MISC_CRTP_H 26 27 namespace arm_compute 28 { 29 namespace misc 30 { 31 /** Curiously recurring template pattern Interface */ 32 template <typename T, template <typename> class Type> 33 struct CRTP 34 { 35 public: 36 /** Exact type */ 37 using ExactType = T; 38 39 protected: implCRTP40 const T &impl() const 41 { 42 return static_cast<const T &>(*this); 43 } implCRTP44 T &impl() 45 { 46 return static_cast<T &>(*this); 47 } 48 49 private: 50 CRTP() = default; 51 friend Type<T>; 52 }; 53 } // namespace misc 54 } // namespace arm_compute 55 #endif /* ARM_COMPUTE_MISC_CRTP_H */ 56