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| author | Matt A. Tobin <email@mattatobin.com> | 2020-11-09 21:10:53 -0500 |
|---|---|---|
| committer | Matt A. Tobin <email@mattatobin.com> | 2020-11-09 21:10:53 -0500 |
| commit | 4694c609642b6c193d8e16cf1203694d9a3b008c (patch) | |
| tree | 7938ed64254807d68798748fed4d6868a2e12bd8 /js/src | |
| parent | 74ebcea4094f6e350936bb416c4c9598f404af0f (diff) | |
| download | UXP-4694c609642b6c193d8e16cf1203694d9a3b008c.tar UXP-4694c609642b6c193d8e16cf1203694d9a3b008c.tar.gz UXP-4694c609642b6c193d8e16cf1203694d9a3b008c.tar.lz UXP-4694c609642b6c193d8e16cf1203694d9a3b008c.tar.xz UXP-4694c609642b6c193d8e16cf1203694d9a3b008c.zip | |
Bug 1328948 - Add is(), as() to Cell.
Tag #1679
Diffstat (limited to 'js/src')
| -rw-r--r-- | js/src/gc/Heap.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/gc/Heap.h b/js/src/gc/Heap.h index 60e7ef729..208941532 100644 --- a/js/src/gc/Heap.h +++ b/js/src/gc/Heap.h @@ -28,6 +28,7 @@ #include "js/HeapAPI.h" #include "js/RootingAPI.h" #include "js/TracingAPI.h" +#include "js/TraceKind.h" struct JSRuntime; @@ -272,6 +273,23 @@ struct Cell 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 inline bool isAligned() const; void dump(FILE* fp) const; |