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 #ifndef OpaqueJSString_h

    27 #define OpaqueJSString_h

    28 

    29 #include <runtime/UString.h>

    30 

    31 namespace JSC {

    32     class Identifier;

    33     class JSGlobalData;

    34 }

    35 

    36 struct OpaqueJSString : public ThreadSafeShared<OpaqueJSString> {

    37 

    38     static PassRefPtr<OpaqueJSString> create() // null

    39     {

    40         return adoptRef(new OpaqueJSString);

    41     }

    42 

    43     static PassRefPtr<OpaqueJSString> create(const UChar* characters, unsigned length)

    44     {

    45         return adoptRef(new OpaqueJSString(characters, length));

    46     }

    47 

    48     static PassRefPtr<OpaqueJSString> create(const JSC::UString&);

    49 

    50     UChar* characters() { return this ? m_characters : 0; }

    51     unsigned length() { return this ? m_length : 0; }

    52 

    53     JSC::UString ustring() const;

    54     JSC::Identifier identifier(JSC::JSGlobalData*) const;

    55 

    56 private:

    57     friend class WTF::ThreadSafeShared<OpaqueJSString>;

    58 

    59     OpaqueJSString()

    60         : m_characters(0)

    61         , m_length(0)

    62     {

    63     }

    64 

    65     OpaqueJSString(const UChar* characters, unsigned length)

    66         : m_length(length)

    67     {

    68         m_characters = new UChar[length];

    69         memcpy(m_characters, characters, length * sizeof(UChar));

    70     }

    71 

    72     ~OpaqueJSString()

    73     {

    74         delete[] m_characters;

    75     }

    76 

    77     UChar* m_characters;

    78     unsigned m_length;

    79 };

    80 

    81 #endif