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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#ifndef RULE_H
#define RULE_H
#include <QString>
#include <QList>
#include <QSharedPointer>
namespace TextEditor {
namespace Internal {
class ProgressData;
class HighlightDefinition;
class Rule
{
public:
Rule(bool consumesNonSpace = true);
virtual ~Rule();
void setContext(const QString &context);
const QString &context() const;
void setItemData(const QString &itemData);
const QString &itemData() const;
void setBeginRegion(const QString &begin);
const QString &beginRegion() const;
void setEndRegion(const QString &end);
const QString &endRegion() const;
void setLookAhead(const QString &lookAhead);
bool isLookAhead() const;
void setFirstNonSpace(const QString &firstNonSpace);
bool isFirstNonSpace() const;
void setColumn(const QString &column);
int column() const;
void addChild(const QSharedPointer<Rule> &rule);
const QList<QSharedPointer<Rule> > &children() const;
bool hasChildren() const;
void setDefinition(const QSharedPointer<HighlightDefinition> &definition);
const QSharedPointer<HighlightDefinition> &definition() const;
bool matchSucceed(const QString &text, const int length, ProgressData *progress);
Rule *clone() const;
void progressFinished();
protected:
bool charPredicateMatchSucceed(const QString &text,
const int length,
ProgressData *progress,
bool (QChar::* predicate)() const) const;
bool charPredicateMatchSucceed(const QString &text,
const int length,
ProgressData *progress,
bool (*predicate)(const QChar &)) const;
bool matchCharacter(const QString &text,
const int length,
ProgressData *progress,
const QChar &c,
bool saveRestoreOffset = true) const;
bool matchEscapeSequence(const QString &text,
const int length,
ProgressData *progress,
bool saveRestoreOffset = true) const;
bool matchOctalSequence(const QString &text,
const int length,
ProgressData *progress,
bool saveRestoreOffset = true) const;
bool matchHexSequence(const QString &text,
const int length,
ProgressData *progress,
bool saveRestoreOffset = true) const;
static const QLatin1Char kBackSlash;
static const QLatin1Char kUnderscore;
static const QLatin1Char kDot;
static const QLatin1Char kPlus;
static const QLatin1Char kMinus;
static const QLatin1Char kZero;
static const QLatin1Char kQuote;
static const QLatin1Char kSingleQuote;
static const QLatin1Char kQuestion;
static const QLatin1Char kX;
static const QLatin1Char kA;
static const QLatin1Char kB;
static const QLatin1Char kE;
static const QLatin1Char kF;
static const QLatin1Char kN;
static const QLatin1Char kR;
static const QLatin1Char kT;
static const QLatin1Char kV;
static const QLatin1Char kOpeningBrace;
static const QLatin1Char kClosingBrace;
private:
virtual bool doMatchSucceed(const QString &text, const int length, ProgressData *progress) = 0;
virtual Rule *doClone() const = 0;
virtual void doProgressFinished() {}
template <class predicate_t>
bool predicateMatchSucceed(const QString &text,
const int length,
ProgressData *progress,
const predicate_t &p) const;
QString m_context;
QString m_itemData;
QString m_beginRegion;
QString m_endRegion;
bool m_lookAhead;
bool m_firstNonSpace;
int m_column;
bool m_consumesNonSpace;
QList<QSharedPointer<Rule> > m_children;
// Rules are represented within contexts. However, they have their own definition because
// of externally included rules.
QSharedPointer<HighlightDefinition> m_definition;
};
} // namespace Internal
} // namespace TextEditor
#endif // RULE_H
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