1 files changed, 26 insertions, 13 deletions
diff --git a/Source/JavaScriptCore/runtime/PrivateName.h b/Source/JavaScriptCore/runtime/PrivateName.h
index 5d2774a20..ea43ff15f 100644
--- a/Source/JavaScriptCore/runtime/PrivateName.h
+++ b/Source/JavaScriptCore/runtime/PrivateName.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
+ * Copyright (C) 2012, 2016 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -23,31 +23,44 @@
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef PrivateName_h
-#define PrivateName_h
+#pragma once
 
-#include <wtf/text/StringImpl.h>
+#include <wtf/text/SymbolImpl.h>
 
 namespace JSC {
 
 class PrivateName {
 public:
     PrivateName()
-        : m_impl(StringImpl::createEmptyUnique())
+        : m_uid(SymbolImpl::createNullSymbol())
     {
     }
-    explicit PrivateName(StringImpl* uid)
-        : m_impl(uid)
+
+    explicit PrivateName(SymbolImpl& uid)
+        : m_uid(uid)
+    {
+    }
+
+    enum DescriptionTag { Description };
+    explicit PrivateName(DescriptionTag, const String& description)
+        : m_uid(SymbolImpl::create(*description.impl()))
+    {
+    }
+
+    PrivateName(const PrivateName& privateName)
+        : m_uid(privateName.m_uid.copyRef())
     {
-        ASSERT(m_impl->isEmptyUnique());
     }
 
-    StringImpl* uid() const { return m_impl.get(); }
+    PrivateName(PrivateName&&) = default;
+
+    SymbolImpl& uid() const { return m_uid; }
+
+    bool operator==(const PrivateName& other) const { return &uid() == &other.uid(); }
+    bool operator!=(const PrivateName& other) const { return &uid() != &other.uid(); }
 
 private:
-    RefPtr<StringImpl> m_impl;
+    Ref<SymbolImpl> m_uid;
 };
 
-}
-
-#endif
+} // namespace JSC