qscriptindenter.h 3.91 KB
Newer Older
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
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 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 QTSCRIPTINDENTER_H
#define QTSCRIPTINDENTER_H

#include <QtCore/QRegExp>
#include <QtCore/QStringList>
35
#include <QtGui/QTextBlock>
36

37
namespace SharedTools {
38

Roberto Raggi's avatar
Roberto Raggi committed
39
class QScriptIndenter
40
{
41
    Q_DISABLE_COPY(QScriptIndenter)
42
43

public:
44
45
    QScriptIndenter();
    ~QScriptIndenter();
46
47
48
49

    void setTabSize(int size);
    void setIndentSize(int size);

50
51
    int indentForBottomLine(QTextBlock firstBlock, QTextBlock lastBlock, QChar typedIn);
    QChar firstNonWhiteSpace(const QString &t) const;
52
53
54
55
56

private:
    static const int SmallRoof;
    static const int BigRoof;

57
58
59
60
    bool isOnlyWhiteSpace(const QString &t) const;
    int columnForIndex(const QString &t, int index) const;
    int indentOfLine(const QString &t) const;
    QString trimmedCodeLine(const QString &t) const;
61

62
63
64
    void eraseChar(QString &t, int k, QChar ch) const;
    QChar lastParen(const QString &t) const;
    bool okay(QChar typedIn, QChar okayCh) const;
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

    /*
        The "linizer" is a group of functions and variables to iterate
        through the source code of the program to indent. The program is
        given as a list of strings, with the bottom line being the line
        to indent. The actual program might contain extra lines, but
        those are uninteresting and not passed over to us.
    */

    bool readLine();
    void startLinizer();
    bool bottomLineStartsInCComment();
    int indentWhenBottomLineStartsInCComment();
    bool matchBracelessControlStatement();
    bool isUnfinishedLine();
    bool isContinuationLine();
    int indentForContinuationLine();
    int indentForStandaloneLine();

private:
    int ppHardwareTabSize;
    int ppIndentSize;
    int ppContinuationIndentSize;
    int ppCommentOffset;

private:
    struct LinizerState
    {
        LinizerState()
            : braceDepth(0),
              leftBraceFollows(false),
Roberto Raggi's avatar
Roberto Raggi committed
96
              inComment(false),
97
98
99
100
101
              pendingRightBrace(false)
        { }

        int braceDepth;
        bool leftBraceFollows;
Roberto Raggi's avatar
Roberto Raggi committed
102
        bool inComment;
103
104
        bool pendingRightBrace;
        QString line;
105
        QTextBlock iter;
106
107
    };

108
109
110
    class Program
    {
    public:
111
        Program() {}
112
113
        Program(QTextBlock begin, QTextBlock end)
            : begin(begin), end(end) {}
114

115
116
        QTextBlock firstBlock() const { return begin; }
        QTextBlock lastBlock() const { return end; }
117

118
119
    private:
        QTextBlock begin, end;
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
    };

    Program yyProgram;
    LinizerState yyLinizerState;

    // shorthands
    const QString *yyLine;
    const int *yyBraceDepth;
    const bool *yyLeftBraceFollows;

    QRegExp literal;
    QRegExp label;
    QRegExp inlineCComment;
    QRegExp braceX;
    QRegExp iflikeKeyword;
135
    QRegExp propertylikeKeyword;
136
137
};

138
} // namespace SharedTools
139
140
141

#endif // QTSCRIPTINDENTER_H