API/OpaqueJSString.cpp

   1 /*
   2  * Copyright (C) 2008 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "OpaqueJSString.h"
  28
  29 #include <interpreter/CallFrame.h>
  30 #include <runtime/JSGlobalObject.h>
  31 #include <runtime/Identifier.h>
  32
  33 using namespace JSC;
  34
  35 PassRefPtr<OpaqueJSString> OpaqueJSString::create(const UString& ustring)
  36 {
  37     if (!ustring.isNull())
  38         return adoptRef(new OpaqueJSString(ustring.data(), ustring.size()));
  39     return 0;
  40 }
  41
  42 UString OpaqueJSString::ustring() const
  43 {
  44     if (this && m_characters)
  45         return UString(m_characters, m_length);
  46     return UString::null();
  47 }
  48
  49 Identifier OpaqueJSString::identifier(JSGlobalData* globalData) const
  50 {
  51     if (!this || !m_characters)
  52         return Identifier(globalData, static_cast<const char*>(0));
  53
  54     return Identifier(globalData, m_characters, m_length);
  55 }