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/*
* Copyright (c) 2018-2019 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ARM_COMPUTE_MISC_CAST_H
#define ARM_COMPUTE_MISC_CAST_H
#include "arm_compute/core/Error.h"
namespace arm_compute
{
namespace utils
{
namespace cast
{
/** Polymorphic cast between two types
*
* @warning Will throw an exception if cast cannot take place
*
* @tparam Target Target to cast type
* @tparam Source Source from cast type
*
* @param[in] v Value to cast
*
* @return The casted value
*/
template <typename Target, typename Source>
inline Target polymorphic_cast(Source *v)
{
if(dynamic_cast<Target>(v) == nullptr)
{
ARM_COMPUTE_THROW(std::bad_cast());
}
return static_cast<Target>(v);
}
/** Polymorphic down cast between two types
*
* @warning Will assert if cannot take place
*
* @tparam Target Target to cast type
* @tparam Source Source from cast type
*
* @param[in] v Value to cast
*
* @return The casted value
*/
template <typename Target, typename Source>
inline Target polymorphic_downcast(Source *v)
{
ARM_COMPUTE_ERROR_ON(dynamic_cast<Target>(v) != static_cast<Target>(v));
return static_cast<Target>(v);
}
/** Polymorphic cast between two unique pointer types
*
* @warning Will throw an exception if cast cannot take place
*
* @tparam Target Target to cast type
* @tparam Source Source from cast type
* @tparam Deleter Deleter function type
*
* @param[in] v Value to cast
*
* @return The casted value
*/
template <typename Target, typename Source, typename Deleter>
std::unique_ptr<Target, Deleter> polymorphic_cast_unique_ptr(std::unique_ptr<Source, Deleter> &&v)
{
if(dynamic_cast<Target *>(v.get()) == nullptr)
{
ARM_COMPUTE_THROW(std::bad_cast());
}
auto r = static_cast<Target *>(v.release());
return std::unique_ptr<Target, Deleter>(r, std::move(v.get_deleter()));
}
/** Polymorphic down cast between two unique pointer types
*
* @warning Will assert if cannot take place
*
* @tparam Target Target to cast type
* @tparam Source Source from cast type
* @tparam Deleter Deleter function type
*
* @param[in] v Value to cast
*
* @return The casted value
*/
template <typename Target, typename Source, typename Deleter>
std::unique_ptr<Target, Deleter> polymorphic_downcast_unique_ptr(std::unique_ptr<Source, Deleter> &&v)
{
ARM_COMPUTE_ERROR_ON(dynamic_cast<Target *>(v.get()) != static_cast<Target *>(v.get()));
auto r = static_cast<Target *>(v.release());
return std::unique_ptr<Target, Deleter>(r, std::move(v.get_deleter()));
}
} // namespace cast
} // namespace utils
} // namespace arm_compute
#endif /* ARM_COMPUTE_MISC_CAST_H */
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