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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef SourceCode_h
30#define SourceCode_h
31
32#include "SourceProvider.h"
33#include <wtf/RefPtr.h>
34
35namespace JSC {
36
37    class SourceCode {
38    public:
39        SourceCode()
40            : m_provider(0)
41            , m_startChar(0)
42            , m_endChar(0)
43            , m_firstLine(0)
44        {
45        }
46
47        SourceCode(PassRefPtr<SourceProvider> provider, int firstLine = 1)
48            : m_provider(provider)
49            , m_startChar(0)
50            , m_endChar(m_provider->length())
51            , m_firstLine(std::max(firstLine, 1))
52        {
53        }
54
55        SourceCode(PassRefPtr<SourceProvider> provider, int start, int end, int firstLine)
56            : m_provider(provider)
57            , m_startChar(start)
58            , m_endChar(end)
59            , m_firstLine(std::max(firstLine, 1))
60        {
61        }
62
63        UString toString() const
64        {
65            if (!m_provider)
66                return UString();
67            return m_provider->getRange(m_startChar, m_endChar);
68        }
69
70        bool isNull() const { return !m_provider; }
71        SourceProvider* provider() const { return m_provider.get(); }
72        int firstLine() const { return m_firstLine; }
73        int startOffset() const { return m_startChar; }
74        int endOffset() const { return m_endChar; }
75        const UChar* data() const { return m_provider->data() + m_startChar; }
76        int length() const { return m_endChar - m_startChar; }
77
78    private:
79        RefPtr<SourceProvider> m_provider;
80        int m_startChar;
81        int m_endChar;
82        int m_firstLine;
83    };
84
85    inline SourceCode makeSource(const UString& source, const UString& url = UString(), int firstLine = 1)
86    {
87        return SourceCode(UStringSourceProvider::create(source, url), firstLine);
88    }
89
90} // namespace JSC
91
92#endif // SourceCode_h
93