1/*
2 * Copyright (c) 2008, Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef ScriptString_h
32#define ScriptString_h
33
34#include "PlatformString.h"
35#include <runtime/UString.h>
36#include <runtime/StringBuilder.h>
37
38namespace WebCore {
39
40class String;
41
42class ScriptString {
43public:
44    ScriptString() {}
45    ScriptString(const char* s) : m_str(s) {}
46    ScriptString(const JSC::UString& s) : m_str(s) {}
47
48    operator JSC::UString() const { return m_str; }
49
50    bool isNull() const { return m_str.isNull(); }
51    size_t size() const { return m_str.size(); }
52
53    ScriptString& operator=(const char* s)
54    {
55        m_str = s;
56        return *this;
57    }
58
59    ScriptString& operator+=(const String& s)
60    {
61        JSC::StringBuilder buffer;
62        buffer.append(m_str);
63        buffer.append(s);
64        m_str = buffer.build();
65        return *this;
66    }
67
68    bool operator==(const ScriptString& s) const
69    {
70        return m_str == s.m_str;
71    }
72
73    bool operator!=(const ScriptString& s) const
74    {
75        // Avoid exporting an extra symbol by re-using "==" operator.
76        return !(m_str == s.m_str);
77    }
78
79private:
80    JSC::UString m_str;
81};
82
83} // namespace WebCore
84
85#endif // ScriptString_h
86