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//
// Copyright © 2020 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#pragma once
#include "Assert.hpp"
#include <armnn/Exceptions.hpp>
#include <type_traits>
namespace armnn
{
// If we are testing then throw an exception, otherwise regular assert
#if defined(ARMNN_POLYMORPHIC_CAST_TESTABLE)
# define ARMNN_POLYMORPHIC_CAST_CHECK_METHOD(cond) ConditionalThrow<std::bad_cast>(cond)
#else
# define ARMNN_POLYMORPHIC_CAST_CHECK_METHOD(cond) ARMNN_ASSERT(cond)
#endif
//Only check the condition if debug build or during testing
#if !defined(NDEBUG) || defined(ARMNN_POLYMORPHIC_CAST_TESTABLE)
# define ARMNN_POLYMORPHIC_CAST_CHECK(cond) ARMNN_POLYMORPHIC_CAST_CHECK_METHOD(cond)
#else
# define ARMNN_POLYMORPHIC_CAST_CHECK(cond) // release builds dont check the cast
#endif
template<typename DestType, typename SourceType>
DestType polymorphic_downcast(SourceType value)
{
static_assert(std::is_pointer<SourceType>::value &&
std::is_pointer<DestType>::value,
"polymorphic_downcast only works with pointer types.");
ARMNN_POLYMORPHIC_CAST_CHECK(dynamic_cast<DestType>(value) == static_cast<DestType>(value));
return static_cast<DestType>(value);
}
} //namespace armnn
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