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/****************************************************************************
**
** Copyright (C) 2006-2009 fullmetalcoder <fullmetalcoder@hotmail.fr>
**
** This file is part of the Edyuk project <http://edyuk.org>
**
** This file may be used under the terms of the GNU General Public License
** version 3 as published by the Free Software Foundation and appearing in the
** file GPL.txt included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#ifndef _QDOCUMENT_BUFFER_H_
#define _QDOCUMENT_BUFFER_H_
#include "qce-config.h"
#include <QVector>
#include "qdocumentline_p.h"
class QDocumentLineHandle;
class QCE_EXPORT QDocumentBuffer
{
friend class QDocumentLineHandle;
public:
class iterator
{
public:
iterator(const iterator& i);
bool atEnd() const;
int lineNumber() const;
QDocumentLineHandle* lineHandle() const;
void move(int numLines);
protected:
iterator(QDocumentBuffer *buffer, int block, int line);
private:
int m_block;
int m_line;
QDocumentBuffer *m_buffer;
};
QDocumentBuffer();
~QDocumentBuffer();
QDocumentLineHandle* at(int index) const;
void appendLine(QDocumentLineHandle *l);
void insertLine(int index, QDocumentLineHandle *l);
void removeLine(int index);
void insertLines(int after, const QVector<QDocumentLineHandle*>& l);
void removeLines(int after, int n);
private:
static void cleanHelper(QVector<QDocumentLineHandle*>& l)
{
foreach ( QDocumentLineHandle *h, l )
h->deref();
}
struct Block
{
inline Block() : start(-1), end(-1) {}
inline Block(int line) : start(line), end(line) {}
~Block() { cleanHelper(lines); }
inline void move(int numLines) { start += numLines; end += numLines; }
inline int size() const { return lines.count(); }
inline QDocumentLineHandle* at(int index) const { return lines.at(index - start); }
inline void append(QDocumentLineHandle *h) { lines.append(h); }
inline void prepend(QDocumentLineHandle *h) { lines.prepend(h); }
inline void insert(int index, QDocumentLineHandle *h) { lines.insert(index - start, h); }
inline void insert(int index, const QDocumentLineHandle* const* l, int n)
{
QDocumentLineHandle **d = const_cast<QDocumentLineHandle**>(l);
int i = index - start;
lines.insert(i, n, 0);
while ( n )
{
lines[i++] = *d;
++d;
--n;
}
}
inline void append(const QDocumentLineHandle* const* l, int n)
{
QDocumentLineHandle **d = const_cast<QDocumentLineHandle**>(l);
int i = lines.count();
lines.insert(i, n, 0);
while ( n )
{
lines[i++] = *d;
++d;
--n;
}
}
inline void prepend(const QDocumentLineHandle* const* l, int n)
{
QDocumentLineHandle **d = const_cast<QDocumentLineHandle**>(l);
int i = 0;
lines.insert(i, n, 0);
while ( n )
{
lines[i++] = *d;
++d;
--n;
}
}
inline void remove(int index) { lines.remove(index - start); }
inline void remove(int index, int count) { lines.remove(index - start, qMin(count, end - index)); }
int start, end;
QVector<QDocumentLineHandle*> lines;
};
int blockForLine(int index) const;
int m_safetyRoom;
int m_optimalSize;
int m_forkThresold;
int m_mergeThresold;
QVector<Block*> m_blocks;
};
#endif // !_QDOCUMENT_BUFFER_H_
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