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-rw-r--r--core/fxcrt/maybe_owned.h22
1 files changed, 16 insertions, 6 deletions
diff --git a/core/fxcrt/maybe_owned.h b/core/fxcrt/maybe_owned.h
index 11dd68642d..130d2bdc3c 100644
--- a/core/fxcrt/maybe_owned.h
+++ b/core/fxcrt/maybe_owned.h
@@ -11,6 +11,7 @@
#include "core/fxcrt/fx_memory.h"
#include "core/fxcrt/fx_system.h"
+#include "core/fxcrt/unowned_ptr.h"
namespace fxcrt {
@@ -33,25 +34,34 @@ class MaybeOwned {
}
void Reset(std::unique_ptr<T, D> ptr) {
+ m_pObj = ptr.get();
m_pOwnedObj = std::move(ptr);
- m_pObj = m_pOwnedObj.get();
}
void Reset(T* ptr = nullptr) {
- m_pOwnedObj.reset();
m_pObj = ptr;
+ m_pOwnedObj.reset();
}
+ T* Get() const { return m_pObj.Get(); }
bool IsOwned() const { return !!m_pOwnedObj; }
- T* Get() const { return m_pObj; }
+
+ // Downgrades to unowned, caller takes ownership.
std::unique_ptr<T, D> Release() {
ASSERT(IsOwned());
return std::move(m_pOwnedObj);
}
+ // Downgrades to empty, caller takes ownership.
+ std::unique_ptr<T, D> ReleaseAndClear() {
+ ASSERT(IsOwned());
+ m_pObj = nullptr;
+ return std::move(m_pOwnedObj);
+ }
+
MaybeOwned& operator=(const MaybeOwned& that) = delete;
MaybeOwned& operator=(MaybeOwned&& that) {
- m_pOwnedObj = std::move(that.m_pOwnedObj);
m_pObj = that.m_pObj;
+ m_pOwnedObj = std::move(that.m_pOwnedObj);
that.m_pObj = nullptr;
return *this;
}
@@ -78,11 +88,11 @@ class MaybeOwned {
explicit operator bool() const { return !!m_pObj; }
T& operator*() const { return *m_pObj; }
- T* operator->() const { return m_pObj; }
+ T* operator->() const { return m_pObj.Get(); }
private:
std::unique_ptr<T, D> m_pOwnedObj;
- T* m_pObj;
+ UnownedPtr<T> m_pObj;
};
} // namespace fxcrt