Index: src/elements.cc |
diff --git a/src/elements.cc b/src/elements.cc |
index f0b1605e9f443e2f3b5eba823bbc954779acad68..88308c262f628995d5fd180ead77b6c46bb3479e 100644 |
--- a/src/elements.cc |
+++ b/src/elements.cc |
@@ -1233,6 +1233,12 @@ class ElementsAccessorBase : public ElementsAccessor { |
return Subclass::LastIndexOfValueImpl(isolate, receiver, value, start_from); |
} |
+ static void ReverseImpl(Handle<JSObject> receiver) { UNREACHABLE(); } |
Camillo Bruni
2017/03/20 13:17:19
nit: directly use "JSObject* receiver"
There is no
Choongwoo Han
2017/03/20 13:54:21
Done.
|
+ |
+ void Reverse(Handle<JSObject> receiver) final { |
+ Subclass::ReverseImpl(receiver); |
+ } |
+ |
static uint32_t GetIndexForEntryImpl(FixedArrayBase* backing_store, |
uint32_t entry) { |
return entry; |
@@ -2970,6 +2976,19 @@ class TypedElementsAccessor |
} while (k-- != 0); |
return Just<int64_t>(-1); |
} |
+ |
+ static void ReverseImpl(Handle<JSObject> receiver) { |
+ DisallowHeapAllocation no_gc; |
+ DCHECK(!WasNeutered(*receiver)); |
+ |
+ BackingStore* elements = BackingStore::cast(receiver->elements()); |
+ |
+ uint32_t len = elements->length(); |
+ if (len == 0) return; |
+ |
+ ctype* data = static_cast<ctype*>(elements->DataPtr()); |
+ std::reverse(data, data + len); |
+ } |
}; |
#define FIXED_ELEMENTS_ACCESSOR(Type, type, TYPE, ctype, size) \ |