Propagate information on whether a non function was called as constructor or not

src/execution.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 170 matching lines @@
   if (object->IsHeapObject() &&
       HeapObject::cast(*object)->map()->has_instance_call_handler()) {
     return Handle<JSFunction>(
         Top::global_context()->call_as_function_delegate());
   }
 
   return Factory::undefined_value();
 }
 
 
+Handle<Object> Execution::GetConstructorDelegate(Handle<Object> object) {
+  ASSERT(!object->IsJSFunction());
+
+  // If you return a function from here, it will be called when an
+  // attempt is made to call the given object as a constructor.
+
+  // Objects created through the API can have an instance-call handler
+  // that should be used when calling the object as a function.
+  if (object->IsHeapObject() &&
+      HeapObject::cast(*object)->map()->has_instance_call_handler()) {
+    return Handle<JSFunction>(
+        Top::global_context()->call_as_constructor_delegate());
+  }
+
+  return Factory::undefined_value();
+}
+
+
 // Static state for stack guards.
 StackGuard::ThreadLocal StackGuard::thread_local_;
 
 
 StackGuard::StackGuard() {
   // NOTE: Overall the StackGuard code assumes that the stack grows towards
   // lower addresses.
   ExecutionAccess access;
   if (thread_local_.nesting_++ == 0) {
     // Initial StackGuard is being set. We will set the stack limits based on
@@ skipping 439 matching lines @@
   // All allocation spaces other than NEW_SPACE have the same effect.
   Heap::CollectAllGarbage();
   return v8::Undefined();
 }
 
 
 static GCExtension kGCExtension;
 v8::DeclareExtension kGCExtensionDeclaration(&kGCExtension);
 
 } }  // namespace v8::internal