Author: [email protected]
Date: Wed Jun 24 04:52:52 2009
New Revision: 2260
Modified:
branches/bleeding_edge/include/v8.h
branches/bleeding_edge/src/api.cc
Log:
A helper function to speed up creation of V8 wrappers for DOM Nodes.
Review URL: http://codereview.chromium.org/141044
Modified: branches/bleeding_edge/include/v8.h
==============================================================================
--- branches/bleeding_edge/include/v8.h (original)
+++ branches/bleeding_edge/include/v8.h Wed Jun 24 04:52:52 2009
@@ -1176,6 +1176,12 @@
public:
uint32_t Length() const;
+ /**
+ * Clones an element at index |index|. Returns an empty
+ * handle if cloning fails (for any reason).
+ */
+ Local<Object> CloneElementAt(uint32_t index);
+
static Local<Array> New(int length = 0);
static Array* Cast(Value* obj);
private:
Modified: branches/bleeding_edge/src/api.cc
==============================================================================
--- branches/bleeding_edge/src/api.cc (original)
+++ branches/bleeding_edge/src/api.cc Wed Jun 24 04:52:52 2009
@@ -3012,6 +3012,26 @@
}
+Local<Object> Array::CloneElementAt(uint32_t index) {
+ ON_BAILOUT("v8::Array::CloneElementAt()", return Local<Object>());
+ i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+ if (!self->HasFastElements()) {
+ return Local<Object>();
+ }
+ i::FixedArray* elms = self->elements();
+ i::Object* paragon = elms->get(index);
+ if (!paragon->IsJSObject()) {
+ return Local<Object>();
+ }
+ i::Handle<i::JSObject> paragon_handle(i::JSObject::cast(paragon));
+ EXCEPTION_PREAMBLE();
+ i::Handle<i::JSObject> result = i::Copy(paragon_handle);
+ has_pending_exception = result.is_null();
+ EXCEPTION_BAILOUT_CHECK(Local<Object>());
+ return Utils::ToLocal(result);
+}
+
+
Local<String> v8::String::NewSymbol(const char* data, int length) {
EnsureInitialized("v8::String::NewSymbol()");
LOG_API("String::NewSymbol(char)");
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