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Bug 1328948 - Add is(), as() to Cell.

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Tag #1679
This commit is contained in:
Matt A. Tobin 2020-11-09 21:10:53 -05:00 • committed by roytam1
commit d646d4403f
1 changed files with 18 additions and 0 deletions
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18
js/src/gc/Heap.h
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@ -28,6 +28,7 @@
#include "js/HeapAPI.h" #include "js/HeapAPI.h"
#include "js/RootingAPI.h" #include "js/RootingAPI.h"
#include "js/TracingAPI.h" #include "js/TracingAPI.h"
#include "js/TraceKind.h"
struct JSRuntime; struct JSRuntime;
@ -272,6 +273,23 @@ struct Cell
static MOZ_ALWAYS_INLINE bool needWriteBarrierPre(JS::Zone* zone); static MOZ_ALWAYS_INLINE bool needWriteBarrierPre(JS::Zone* zone);
template <class T>
inline bool is() const {
return getTraceKind() == JS::MapTypeToTraceKind<T>::kind;
}
template<class T>
inline T* as() {
MOZ_ASSERT(is<T>());
return static_cast<T*>(this);
}
template <class T>
inline const T* as() const {
MOZ_ASSERT(is<T>());
return static_cast<const T*>(this);
}
#ifdef DEBUG #ifdef DEBUG
inline bool isAligned() const; inline bool isAligned() const;
void dump(FILE* fp) const; void dump(FILE* fp) const;