Implement CallAsConstructor method for Object in the API

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index c72857da644eedb55f4ce93002f73ef7e20b29bf..ace04135abc6171509494a167847afc6e5b4e05b 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -3262,7 +3262,7 @@ Local<v8::Value> Object::CallAsFunction(v8::Handle<v8::Object> recv, int argc,
              return Local<v8::Value>());
   LOG_API(isolate, "Object::CallAsFunction");
   ENTER_V8(isolate);
-  HandleScope scope;
+  i::HandleScope scope(isolate);
   i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
   i::Handle<i::Object> recv_obj = Utils::OpenHandle(*recv);
   STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
@@ -3282,7 +3282,42 @@ Local<v8::Value> Object::CallAsFunction(v8::Handle<v8::Object> recv, int argc,
   i::Handle<i::Object> returned =
       i::Execution::Call(fun, recv_obj, argc, args, &has_pending_exception);
   EXCEPTION_BAILOUT_CHECK(isolate, Local<Value>());
-  return scope.Close(Utils::ToLocal(returned));
+  return Utils::ToLocal(scope.CloseAndEscape(returned));
+}
+
+
+Local<v8::Value> Object::CallAsConstructor(int argc,
+                                           v8::Handle<v8::Value> argv[]) {
+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  ON_BAILOUT(isolate, "v8::Object::CallAsConstructor()",
+             return Local<v8::Object>());
+  LOG_API(isolate, "Object::CallAsConstructor");
+  ENTER_V8(isolate);
+  i::HandleScope scope(isolate);
+  i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
+  STATIC_ASSERT(sizeof(v8::Handle<v8::Value>) == sizeof(i::Object**));
+  i::Object*** args = reinterpret_cast<i::Object***>(argv);
+  i::Handle<i::Object> returned;

[Mads Ager (chromium), 2011/05/06 10:41:47]

I would move these to where they are used. I'll take care of than when landing.

+  i::Handle<i::JSFunction> fun;
+  if (obj->IsJSFunction()) {
+    EXCEPTION_PREAMBLE(isolate);
+    fun = i::Handle<i::JSFunction>::cast(obj);
+    returned = i::Execution::New(fun, argc, args, &has_pending_exception);
+    EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::Object>());
+    return Utils::ToLocal(scope.CloseAndEscape(
+          i::Handle<i::JSObject>::cast(returned)));

[Mads Ager (chromium), 2011/05/06 10:41:47]

I would format this differently. I'll take care of that when landing.

+  }
+  EXCEPTION_PREAMBLE(isolate);
+  i::Handle<i::Object> delegate =
+      i::Execution::TryGetConstructorDelegate(obj, &has_pending_exception);
+  if (!delegate->IsUndefined()) {
+    fun = i::Handle<i::JSFunction>::cast(delegate);
+    returned =
+        i::Execution::Call(fun, obj, argc, args, &has_pending_exception);
+  }
+  EXCEPTION_BAILOUT_CHECK(isolate, Local<v8::Object>());
+  ASSERT(!delegate->IsUndefined());
+  return Utils::ToLocal(scope.CloseAndEscape(returned));
 }