1/*
2 * Copyright (C) 2008, 2013 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 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 , m_startColumn(0)
45 {
46 }
47
48 SourceCode(WTF::HashTableDeletedValueType)
49 : m_provider(WTF::HashTableDeletedValue)
50 {
51 }
52
53 SourceCode(PassRefPtr<SourceProvider> provider)
54 : m_provider(provider)
55 , m_startChar(0)
56 , m_endChar(m_provider->source().length())
57 , m_firstLine(1)
58 , m_startColumn(1)
59 {
60 }
61
62 SourceCode(PassRefPtr<SourceProvider> provider, int firstLine, int startColumn)
63 : m_provider(provider)
64 , m_startChar(0)
65 , m_endChar(m_provider->source().length())
66 , m_firstLine(std::max(firstLine, 1))
67 , m_startColumn(std::max(startColumn, 1))
68 {
69 }
70
71 SourceCode(PassRefPtr<SourceProvider> provider, int start, int end, int firstLine, int startColumn)
72 : m_provider(provider)
73 , m_startChar(start)
74 , m_endChar(end)
75 , m_firstLine(std::max(firstLine, 1))
76 , m_startColumn(std::max(startColumn, 1))
77 {
78 }
79
80 bool isHashTableDeletedValue() const { return m_provider.isHashTableDeletedValue(); }
81
82 unsigned hash() const
83 {
84 ASSERT(m_provider);
85 return m_provider->hash();
86 }
87
88 StringView view() const
89 {
90 if (!m_provider)
91 return StringView();
92 return m_provider->getRange(m_startChar, m_endChar);
93 }
94
95 CString toUTF8() const;
96
97 intptr_t providerID() const
98 {
99 if (!m_provider)
100 return SourceProvider::nullID;
101 return m_provider->asID();
102 }
103
104 bool isNull() const { return !m_provider; }
105 SourceProvider* provider() const { return m_provider.get(); }
106 int firstLine() const { return m_firstLine; }
107 int startColumn() const { return m_startColumn; }
108 int startOffset() const { return m_startChar; }
109 int endOffset() const { return m_endChar; }
110 int length() const { return m_endChar - m_startChar; }
111
112 SourceCode subExpression(unsigned openBrace, unsigned closeBrace, int firstLine, int startColumn);
113
114 private:
115 RefPtr<SourceProvider> m_provider;
116 int m_startChar;
117 int m_endChar;
118 int m_firstLine;
119 int m_startColumn;
120 };
121
122 inline SourceCode makeSource(const String& source, const String& url = String(), const TextPosition& startPosition = TextPosition::minimumPosition())
123 {
124 return SourceCode(StringSourceProvider::create(source, url, startPosition), startPosition.m_line.oneBasedInt(), startPosition.m_column.oneBasedInt());
125 }
126
127 inline SourceCode SourceCode::subExpression(unsigned openBrace, unsigned closeBrace, int firstLine, int startColumn)
128 {
129 startColumn += 1; // Convert to base 1.
130 return SourceCode(provider(), openBrace, closeBrace + 1, firstLine, startColumn);
131 }
132
133} // namespace JSC
134
135#endif // SourceCode_h
136