+ ASSERT(inherits(&s_info));
+ putDirect(*globalData, globalData->propertyNames->message, jsString(globalData, ""));
+}
+
+ErrorInstance::ErrorInstance(JSGlobalData* globalData, Structure* structure, const UString& message)
+ : JSNonFinalObject(*globalData, structure)
+ , m_appendSourceToMessage(false)
+{
+ ASSERT(inherits(&s_info));
+ putDirect(*globalData, globalData->propertyNames->message, jsString(globalData, message));
+}
+
+ErrorInstance* ErrorInstance::create(JSGlobalData* globalData, Structure* structure, const UString& message)
+{
+ return new (globalData) ErrorInstance(globalData, structure, message);
+}
+
+ErrorInstance* ErrorInstance::create(ExecState* exec, Structure* structure, JSValue message)
+{
+ if (message.isUndefined())
+ return new (exec) ErrorInstance(&exec->globalData(), structure);
+ return new (exec) ErrorInstance(&exec->globalData(), structure, message.toString(exec));