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/***************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
**
** Non-Open Source Usage
**
** Licensees may use this file in accordance with the Qt Beta Version
** License Agreement, Agreement version 2.2 provided with the Software or,
** alternatively, in accordance with the terms contained in a written
** agreement between you and Nokia.
**
** GNU General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the packaging
** of this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
**
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt GPL Exception version
** 1.2, included in the file GPL_EXCEPTION.txt in this package.
**
***************************************************************************/
#ifndef INDENTER_H
#define INDENTER_H
#include <QtCore/QString>
#include <QtCore/QStringList>
namespace SharedTools {
namespace IndenterInternal {
/* String constants and regexps required by the indenter. Separate for code cleanliness*/
struct Constants {
Constants();
const QString m_slashAster;
const QString m_asterSlash;
const QString m_slashSlash;
const QString m_else;
const QString m_qobject;
const QString m_operators;
const QString m_bracesSemicolon;
const QString m_3dots;
QRegExp m_literal;
QRegExp m_label;
QRegExp m_inlineCComment;
QRegExp m_braceX;
QRegExp m_iflikeKeyword;
QRegExp m_caseLabel;
};
/* 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. */
template <class Iterator>
struct LinizerState {
QString line;
int braceDepth;
bool leftBraceFollows;
Iterator iter;
bool inCComment;
bool pendingRightBrace;
};
}
/* Indenter singleton as a template of a bidirectional input iterator
* of a sequence of code lines represented as QString.
* When setting the parameters, be careful to
* specify the correct template parameters (best use a typedef). */
template <class Iterator>
class Indenter {
Indenter(const Indenter&);
Indenter &operator=(const Indenter&);
Indenter();
public:
~Indenter();
static Indenter &instance();
void setIndentSize(int size);
void setTabSize(int size );
/* Return indentation for the last line of the sequence
* based on the previous lines. */
int indentForBottomLine(const Iterator ¤t,
const Iterator &programBegin,
const Iterator &programEnd,
QChar typedIn);
// Helpers.
static bool isOnlyWhiteSpace( const QString& t);
static QChar firstNonWhiteSpace( const QString& t );
private:
int columnForIndex( const QString& t, int index ) const;
int indentOfLine( const QString& t ) const;
QString trimmedCodeLine( const QString& t );
bool readLine();
void startLinizer();
bool bottomLineStartsInCComment();
int indentWhenBottomLineStartsInCComment() const;
bool matchBracelessControlStatement();
bool isUnfinishedLine();
bool isContinuationLine();
int indentForContinuationLine();
int indentForStandaloneLine();
IndenterInternal::Constants m_constants;
int ppHardwareTabSize;
int ppIndentSize;
int ppContinuationIndentSize;
Iterator yyProgramBegin;
Iterator yyProgramEnd;
typedef typename IndenterInternal::LinizerState<Iterator> LinizerState;
LinizerState *yyLinizerState ;
// shorthands
const QString *yyLine;
const int *yyBraceDepth;
const bool *yyLeftBraceFollows;
};
}
#include "indenter_impl.h"
#endif
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