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AK: Add adopt_nonnull_own_or_enomem

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This is basically a complement to adopt_nonnull_ref_or_enomem, and
simplifies boilerplate for try_create functions which just return ENOMEM
or the object based on whether it was able to allocate.
This commit is contained in:
sin-ack 2021-08-15 08:37:33 +00:00 committed by Andreas Kling
parent 05ecbd9535
commit 8269e1a197
1 changed files with 18 additions and 0 deletions
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18
AK/OwnPtr.h
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@ -8,6 +8,9 @@
#include <AK/NonnullOwnPtr.h>
#include <AK/RefCounted.h>
#ifdef KERNEL
# include <Kernel/KResult.h>
#endif
namespace AK {
@ -205,6 +208,17 @@ inline OwnPtr<T> adopt_own_if_nonnull(T* object)
return {};
}
#ifdef KERNEL
template<typename T>
inline Kernel::KResultOr<NonnullOwnPtr<T>> adopt_nonnull_own_or_enomem(T* object)
{
auto result = adopt_own_if_nonnull(object);
if (!result)
return ENOMEM;
return result.release_nonnull();
}
#endif
template<typename T, class... Args>
requires(IsConstructible<T, Args...>) inline OwnPtr<T> try_make(Args&&... args)
{
@ -232,3 +246,7 @@ struct Traits<OwnPtr<T>> : public GenericTraits<OwnPtr<T>> {
using AK::adopt_own_if_nonnull;
using AK::OwnPtr;
using AK::try_make;
#ifdef KERNEL
using AK::adopt_nonnull_own_or_enomem;
#endif