Attributes and deletion of String object properties

As per ECMA-262.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/StringObject.cpp b/src/3rdparty/webkit/JavaScriptCore/runtime/StringObject.cpp
index fb44498..df40691 100644
--- a/src/3rdparty/webkit/JavaScriptCore/runtime/StringObject.cpp
+++ b/src/3rdparty/webkit/JavaScriptCore/runtime/StringObject.cpp
@@ -72,6 +72,10 @@ bool StringObject::deleteProperty(ExecState* exec, const Identifier& propertyNam
 {
     if (propertyName == exec->propertyNames().length)
         return false;
+    bool isStrictUInt32;
+    unsigned i = propertyName.toStrictUInt32(&isStrictUInt32);
+    if (isStrictUInt32 && internalValue()->canGetIndex(i))
+        return false;
     return JSObject::deleteProperty(exec, propertyName);
 }
 
@@ -83,6 +87,13 @@ void StringObject::getPropertyNames(ExecState* exec, PropertyNameArray& property
     return JSObject::getPropertyNames(exec, propertyNames);
 }
 
+bool StringObject::getPropertyAttributes(ExecState* exec, const Identifier& propertyName, unsigned& attributes) const
+{
+    if (internalValue()->getStringPropertyAttributes(exec, propertyName, attributes))
+        return true;
+    return JSObject::getPropertyAttributes(exec, propertyName, attributes);
+}
+
 UString StringObject::toString(ExecState*) const
 {
     return internalValue()->value();