auto import from //depot/cupcake/@135843
diff --git a/JavaScriptCore/API/OpaqueJSString.h b/JavaScriptCore/API/OpaqueJSString.h
new file mode 100644
index 0000000..da05b06
--- /dev/null
+++ b/JavaScriptCore/API/OpaqueJSString.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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 with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef OpaqueJSString_h
+#define OpaqueJSString_h
+
+#include <kjs/ustring.h>
+
+namespace JSC {
+ class Identifier;
+ class JSGlobalData;
+}
+
+struct OpaqueJSString : public ThreadSafeShared<OpaqueJSString> {
+
+ static PassRefPtr<OpaqueJSString> create() // null
+ {
+ return adoptRef(new OpaqueJSString);
+ }
+
+ static PassRefPtr<OpaqueJSString> create(const UChar* characters, unsigned length)
+ {
+ return adoptRef(new OpaqueJSString(characters, length));
+ }
+
+ static PassRefPtr<OpaqueJSString> create(const JSC::UString&);
+
+ UChar* characters() { return this ? m_characters : 0; }
+ unsigned length() { return this ? m_length : 0; }
+
+ JSC::UString ustring() const;
+ JSC::Identifier identifier(JSC::JSGlobalData*) const;
+
+private:
+ friend class WTF::ThreadSafeShared<OpaqueJSString>;
+
+ OpaqueJSString()
+ : m_characters(0)
+ , m_length(0)
+ {
+ }
+
+ OpaqueJSString(const UChar* characters, unsigned length)
+ : m_length(length)
+ {
+ m_characters = new UChar[length];
+ memcpy(m_characters, characters, length * sizeof(UChar));
+ }
+
+ ~OpaqueJSString()
+ {
+ delete[] m_characters;
+ }
+
+ UChar* m_characters;
+ unsigned m_length;
+};
+
+#endif
