Allow to define accessors on objects.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index a4c38b72c248be34fdf0be53056438aae663c9e6..1a018131e87810c5ebb22c4778b47a99a95d0cd0 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -776,18 +776,13 @@ void FunctionTemplate::SetCallHandler(InvocationCallback callback,
 }
 
 
-void FunctionTemplate::AddInstancePropertyAccessor(
+static i::Handle<i::AccessorInfo> MakeAccessorInfo(
       v8::Handle<String> name,
       AccessorGetter getter,
       AccessorSetter setter,
       v8::Handle<Value> data,
       v8::AccessControl settings,
       v8::PropertyAttribute attributes) {
-  if (IsDeadCheck("v8::FunctionTemplate::AddInstancePropertyAccessor()")) {
-    return;
-  }
-  ENTER_V8;
-  HandleScope scope;
   i::Handle<i::AccessorInfo> obj = i::Factory::NewAccessorInfo();
   ASSERT(getter != NULL);
   obj->set_getter(*FromCData(getter));
@@ -799,7 +794,26 @@ void FunctionTemplate::AddInstancePropertyAccessor(
   if (settings & ALL_CAN_WRITE) obj->set_all_can_write(true);
   if (settings & PROHIBITS_OVERWRITING) obj->set_prohibits_overwriting(true);
   obj->set_property_attributes(static_cast<PropertyAttributes>(attributes));
+  return obj;
+}
+
+
+void FunctionTemplate::AddInstancePropertyAccessor(
+      v8::Handle<String> name,
+      AccessorGetter getter,
+      AccessorSetter setter,
+      v8::Handle<Value> data,
+      v8::AccessControl settings,
+      v8::PropertyAttribute attributes) {
+  if (IsDeadCheck("v8::FunctionTemplate::AddInstancePropertyAccessor()")) {
+    return;
+  }
+  ENTER_V8;
+  HandleScope scope;
 
+  i::Handle<i::AccessorInfo> obj = MakeAccessorInfo(name,
+                                                    getter, setter, data,
+                                                    settings, attributes);
   i::Handle<i::Object> list(Utils::OpenHandle(this)->property_accessors());
   if (list->IsUndefined()) {
     list = NeanderArray().value();
@@ -2354,6 +2368,23 @@ bool v8::Object::Has(uint32_t index) {
 }
 
 
+bool Object::SetAccessor(Handle<String> name,
+                         AccessorGetter getter,
+                         AccessorSetter setter,
+                         v8::Handle<Value> data,
+                         AccessControl settings,
+                         PropertyAttribute attributes) {
+  ON_BAILOUT("v8::Object::SetAccessor()", return false);
+  ENTER_V8;
+  HandleScope scope;
+  i::Handle<i::AccessorInfo> info = MakeAccessorInfo(name,
+                                                     getter, setter, data,
+                                                     settings, attributes);
+  i::Handle<i::Object> result = i::SetAccessor(Utils::OpenHandle(this), info);
+  return !result.is_null() && !result->IsUndefined();
+}
+
+
 bool v8::Object::HasRealNamedProperty(Handle<String> key) {
   ON_BAILOUT("v8::Object::HasRealNamedProperty()", return false);
   return Utils::OpenHandle(this)->HasRealNamedProperty(