1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#ifndef HIGHLIGHTER_H
#define HIGHLIGHTER_H
#include "basetextdocumentlayout.h"
#include <QtCore/QString>
#include <QtCore/QVector>
#include <QtCore/QSharedPointer>
#include <QtCore/QStringList>
#include <QtGui/QSyntaxHighlighter>
namespace TextEditor {
class FontSettings;
}
namespace TextEditor {
namespace Internal {
class Rule;
class Context;
class HighlightDefinition;
class ProgressData;
class Highlighter : public QSyntaxHighlighter
{
public:
Highlighter(const QSharedPointer<Context> &defaultContext, QTextDocument *parent = 0);
virtual ~Highlighter();
void configureFormats(const FontSettings &fs);
protected:
virtual void highlightBlock(const QString &text);
private:
void setupDataForBlock(const QString &text);
void setupDefault();
void setupFromWillContinue();
void setupFromContinued();
void setupFromPersistent();
void iterateThroughRules(const QString &text,
const int length,
ProgressData *progress,
const bool childRule,
const QList<QSharedPointer<Rule> > &rules);
bool contextChangeRequired(const QString &contextName) const;
void handleContextChange(const QString &contextName,
const QSharedPointer<HighlightDefinition> &definition,
const bool setCurrent = true);
void changeContext(const QString &contextName,
const QSharedPointer<HighlightDefinition> &definition,
const bool setCurrent = true);
void applyFormat(int offset,
int count,
const QString &itemDataName,
const QSharedPointer<HighlightDefinition> &definition);
void applyVisualWhitespaceFormat(const QString &text);
QString currentContextSequence() const;
void mapContextSequence(const QString &contextSequence);
void pushContextSequence(int state);
void pushDynamicContext(const QSharedPointer<Context> &baseContext);
void setCurrentContext();
void createWillContinueBlock();
void analyseConsistencyOfWillContinueBlock(const QString &text);
struct BlockData : TextBlockUserData
{
BlockData();
virtual ~BlockData();
int m_originalState;
QSharedPointer<Context> m_contextToContinue;
};
BlockData *initializeBlockData();
// Block states
// - Default [0]: Nothing special.
// - WillContinue [1]: When there is match of the LineContinue rule (backslash as the last
// character).
// - Continued [2]: Blocks that happen after a WillContinue block and continued from their
// context until the next line end.
// - Persistent(s) [Anything >= 3]: Correspond to persistent contexts which last until a pop
// occurs due to a matching rule. Every sequence of persistent contexts seen so far is
// associated with a number (incremented by a unit each time).
enum BlockState {
Default = 0,
WillContinue,
Continued,
PersistentsStart
};
int m_persistentStatesCounter;
int m_dynamicContextsCounter;
bool m_isBroken;
QSharedPointer<Context> m_defaultContext;
QSharedPointer<Context> m_currentContext;
QVector<QSharedPointer<Context> > m_contexts;
// Mapping from context sequences to the persistent state they represent.
QHash<QString, int> m_persistentStates;
// Mapping from context sequences to the non-persistent state that led to them.
QHash<QString, int> m_leadingStates;
// Mapping from persistent states to context sequences (the actual "stack").
QHash<int, QVector<QSharedPointer<Context> > > m_persistentContexts;
// Captures used in dynamic rules.
QStringList m_currentCaptures;
QTextCharFormat m_visualWhitespaceFormat;
QHash<QString, QTextCharFormat> m_genericFormats;
};
} // namespace Internal
} // namespace TextEditor
#endif // HIGHLIGHTER_H
|
