120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020 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_MISC_CAST_H
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#define ARM_COMPUTE_MISC_CAST_H
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#include "arm_compute/core/Error.h"
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namespace arm_compute
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{
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namespace utils
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{
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namespace cast
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{
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/** Polymorphic cast between two types
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*
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* @warning Will throw an exception if cast cannot take place
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*
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* @tparam Target Target to cast type
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* @tparam Source Source from cast type
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*
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* @param[in] v Value to cast
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*
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* @return The casted value
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*/
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template <typename Target, typename Source>
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inline Target polymorphic_cast(Source *v)
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{
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if(dynamic_cast<Target>(v) == nullptr)
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{
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ARM_COMPUTE_THROW(std::bad_cast());
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}
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return static_cast<Target>(v);
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}
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/** Polymorphic down cast between two types
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*
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* @warning Will assert if cannot take place
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*
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* @tparam Target Target to cast type
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* @tparam Source Source from cast type
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*
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* @param[in] v Value to cast
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*
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* @return The casted value
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*/
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template <typename Target, typename Source>
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inline Target polymorphic_downcast(Source *v)
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{
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ARM_COMPUTE_ERROR_ON(dynamic_cast<Target>(v) != static_cast<Target>(v));
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return static_cast<Target>(v);
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}
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/** Polymorphic cast between two unique pointer types
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*
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* @warning Will throw an exception if cast cannot take place
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*
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* @tparam Target Target to cast type
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* @tparam Source Source from cast type
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* @tparam Deleter Deleter function type
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*
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* @param[in] v Value to cast
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*
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* @return The casted value
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*/
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template <typename Target, typename Source, typename Deleter>
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std::unique_ptr<Target, Deleter> polymorphic_cast_unique_ptr(std::unique_ptr<Source, Deleter> &&v)
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{
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if(dynamic_cast<Target *>(v.get()) == nullptr)
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{
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ARM_COMPUTE_THROW(std::bad_cast());
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}
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auto r = static_cast<Target *>(v.release());
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return std::unique_ptr<Target, Deleter>(r, std::move(v.get_deleter()));
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}
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/** Polymorphic down cast between two unique pointer types
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*
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* @warning Will assert if cannot take place
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*
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* @tparam Target Target to cast type
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* @tparam Source Source from cast type
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* @tparam Deleter Deleter function type
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*
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* @param[in] v Value to cast
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*
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* @return The casted value
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*/
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template <typename Target, typename Source, typename Deleter>
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std::unique_ptr<Target, Deleter> polymorphic_downcast_unique_ptr(std::unique_ptr<Source, Deleter> &&v)
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{
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ARM_COMPUTE_ERROR_ON(dynamic_cast<Target *>(v.get()) != static_cast<Target *>(v.get()));
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auto r = static_cast<Target *>(v.release());
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return std::unique_ptr<Target, Deleter>(r, std::move(v.get_deleter()));
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}
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} // namespace cast
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} // namespace utils
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} // namespace arm_compute
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#endif /* ARM_COMPUTE_MISC_CAST_H */
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