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Merge topic 'sumitb/vs16'

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782d7387d5 Implement cm::static_reference_cast by declval

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4971
This commit is contained in:
Marc Chevrier
2020-07-06 13:27:50 +00:00
committed by Kitware Robot
parent a4cfc7d03c 782d7387d5
commit c17167cdcb
1 changed files with 9 additions and 8 deletions
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17
Utilities/std/cmext/memory
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@@ -12,18 +12,19 @@
namespace cm {
template <typename T, typename O,
cm::enable_if_t<
std::is_pointer<cm::invoke_result_t<decltype(&O::get), O>>::value,
int> = 0>
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<cm::invoke_result_t<decltype(&O::get), O>>::value,
int> = 0>
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());