You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
828 B
42 lines
828 B
4 years ago
|
// -*-c++-*-
|
||
|
|
// vim: set ft=cpp:
|
||
|
|
|
||
|
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
||
|
|
file Copyright.txt or https://cmake.org/licensing for details. */
|
||
|
|
#ifndef cmext_memory
|
||
|
|
#define cmext_memory
|
||
|
|
|
||
|
|
#include <typeinfo>
|
||
|
|
|
||
|
|
#include <cm/type_traits>
|
||
|
|
|
||
|
|
namespace cm {
|
||
|
|
|
||
|
|
template <
|
||
|
|
typename T, typename O,
|
||
|
|
cm::enable_if_t<std::is_pointer<decltype(std::declval<O>().get())>::value,
|
||
|
|
int> = 0>
|
||
|
|
T& static_reference_cast(O& item)
|
||
|
|
{
|
||
|
|
return *(static_cast<T*>(item.get()));
|
||
|
|
}
|
||
|
|
|
||
|
|
template <
|
||
|
|
typename T, typename O,
|
||
|
|
cm::enable_if_t<std::is_pointer<decltype(std::declval<O>().get())>::value,
|
||
|
|
int> = 0>
|
||
|
|
T& dynamic_reference_cast(O& item)
|
||
|
|
{
|
||
|
|
auto p = dynamic_cast<T*>(item.get());
|
||
|
|
|
||
|
|
if (p == nullptr) {
|
||
|
|
throw std::bad_cast();
|
||
|
|
}
|
||
|
|
|
||
|
|
return *p;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace cm
|
||
|
|
|
||
|
|
#endif
|