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 <wtf/ThreadSafeRefCounted.h>
30#include <wtf/text/WTFString.h>
31
32namespace JSC {
33    class Identifier;
34    class VM;
35}
36
37struct OpaqueJSString : public ThreadSafeRefCounted<OpaqueJSString> {
38
39    static PassRefPtr<OpaqueJSString> create() // null
40    {
41        return adoptRef(new OpaqueJSString);
42    }
43
44    static PassRefPtr<OpaqueJSString> create(const LChar* characters, unsigned length)
45    {
46        return adoptRef(new OpaqueJSString(characters, length));
47    }
48
49    static PassRefPtr<OpaqueJSString> create(const UChar* characters, unsigned length)
50    {
51        return adoptRef(new OpaqueJSString(characters, length));
52    }
53
54    JS_EXPORT_PRIVATE static PassRefPtr<OpaqueJSString> create(const String&);
55
56    const UChar* characters() { return !!this ? m_string.characters() : 0; }
57    unsigned length() { return !!this ? m_string.length() : 0; }
58
59    JS_EXPORT_PRIVATE String string() const;
60    JSC::Identifier identifier(JSC::VM*) const;
61#if PLATFORM(QT)
62    QString qString() const { return m_string; }
63#endif
64
65private:
66    friend class WTF::ThreadSafeRefCounted<OpaqueJSString>;
67
68    OpaqueJSString()
69    {
70    }
71
72    OpaqueJSString(const String& string)
73        : m_string(string.isolatedCopy())
74    {
75    }
76
77    OpaqueJSString(const LChar* characters, unsigned length)
78    {
79        m_string = String(characters, length);
80    }
81
82    OpaqueJSString(const UChar* characters, unsigned length)
83    {
84        m_string = String(characters, length);
85    }
86
87    String m_string;
88};
89
90#endif
91