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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QITERATOR_H
#define QITERATOR_H
#include <QtCore/qglobal.h>
QT_BEGIN_HEADER
namespace std {
struct bidirectional_iterator_tag;
struct random_access_iterator_tag;
}
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
#define Q_DECLARE_SEQUENTIAL_ITERATOR(C) \
\
template <class T> \
class Q##C##Iterator \
{ \
typedef typename Q##C<T>::const_iterator const_iterator; \
Q##C<T> c; \
const_iterator i; \
public: \
inline Q##C##Iterator(const Q##C<T> &container) \
: c(container), i(c.constBegin()) {} \
inline Q##C##Iterator &operator=(const Q##C<T> &container) \
{ c = container; i = c.constBegin(); return *this; } \
inline void toFront() { i = c.constBegin(); } \
inline void toBack() { i = c.constEnd(); } \
inline bool hasNext() const { return i != c.constEnd(); } \
inline const T &next() { return *i++; } \
inline const T &peekNext() const { return *i; } \
inline bool hasPrevious() const { return i != c.constBegin(); } \
inline const T &previous() { return *--i; } \
inline const T &peekPrevious() const { const_iterator p = i; return *--p; } \
inline bool findNext(const T &t) \
{ while (i != c.constEnd()) if (*i++ == t) return true; return false; } \
inline bool findPrevious(const T &t) \
{ while (i != c.constBegin()) if (*(--i) == t) return true; \
return false; } \
};
#define Q_DECLARE_MUTABLE_SEQUENTIAL_ITERATOR(C) \
\
template <class T> \
class QMutable##C##Iterator \
{ \
typedef typename Q##C<T>::iterator iterator; \
typedef typename Q##C<T>::const_iterator const_iterator; \
Q##C<T> *c; \
iterator i, n; \
inline bool item_exists() const { return const_iterator(n) != c->constEnd(); } \
public: \
inline QMutable##C##Iterator(Q##C<T> &container) \
: c(&container) \
{ c->setSharable(false); i = c->begin(); n = c->end(); } \
inline ~QMutable##C##Iterator() \
{ c->setSharable(true); } \
inline QMutable##C##Iterator &operator=(Q##C<T> &container) \
{ c->setSharable(true); c = &container; c->setSharable(false); \
i = c->begin(); n = c->end(); return *this; } \
inline void toFront() { i = c->begin(); n = c->end(); } \
inline void toBack() { i = c->end(); n = i; } \
inline bool hasNext() const { return c->constEnd() != const_iterator(i); } \
inline T &next() { n = i++; return *n; } \
inline T &peekNext() const { return *i; } \
inline bool hasPrevious() const { return c->constBegin() != const_iterator(i); } \
inline T &previous() { n = --i; return *n; } \
inline T &peekPrevious() const { iterator p = i; return *--p; } \
inline void remove() \
{ if (c->constEnd() != const_iterator(n)) { i = c->erase(n); n = c->end(); } } \
inline void setValue(const T &t) const { if (c->constEnd() != const_iterator(n)) *n = t; } \
inline T &value() { Q_ASSERT(item_exists()); return *n; } \
inline const T &value() const { Q_ASSERT(item_exists()); return *n; } \
inline void insert(const T &t) { n = i = c->insert(i, t); ++i; } \
inline bool findNext(const T &t) \
{ while (c->constEnd() != const_iterator(n = i)) if (*i++ == t) return true; return false; } \
inline bool findPrevious(const T &t) \
{ while (c->constBegin() != const_iterator(i)) if (*(n = --i) == t) return true; \
n = c->end(); return false; } \
};
#define Q_DECLARE_ASSOCIATIVE_ITERATOR(C) \
\
template <class Key, class T> \
class Q##C##Iterator \
{ \
typedef typename Q##C<Key,T>::const_iterator const_iterator; \
typedef const_iterator Item; \
Q##C<Key,T> c; \
const_iterator i, n; \
inline bool item_exists() const { return n != c.constEnd(); } \
public: \
inline Q##C##Iterator(const Q##C<Key,T> &container) \
: c(container), i(c.constBegin()), n(c.constEnd()) {} \
inline Q##C##Iterator &operator=(const Q##C<Key,T> &container) \
{ c = container; i = c.constBegin(); n = c.constEnd(); return *this; } \
inline void toFront() { i = c.constBegin(); n = c.constEnd(); } \
inline void toBack() { i = c.constEnd(); n = c.constEnd(); } \
inline bool hasNext() const { return i != c.constEnd(); } \
inline Item next() { n = i++; return n; } \
inline Item peekNext() const { return i; } \
inline bool hasPrevious() const { return i != c.constBegin(); } \
inline Item previous() { n = --i; return n; } \
inline Item peekPrevious() const { const_iterator p = i; return --p; } \
inline const T &value() const { Q_ASSERT(item_exists()); return *n; } \
inline const Key &key() const { Q_ASSERT(item_exists()); return n.key(); } \
inline bool findNext(const T &t) \
{ while ((n = i) != c.constEnd()) if (*i++ == t) return true; return false; } \
inline bool findPrevious(const T &t) \
{ while (i != c.constBegin()) if (*(n = --i) == t) return true; \
n = c.constEnd(); return false; } \
};
#define Q_DECLARE_MUTABLE_ASSOCIATIVE_ITERATOR(C) \
\
template <class Key, class T> \
class QMutable##C##Iterator \
{ \
typedef typename Q##C<Key,T>::iterator iterator; \
typedef typename Q##C<Key,T>::const_iterator const_iterator; \
typedef iterator Item; \
Q##C<Key,T> *c; \
iterator i, n; \
inline bool item_exists() const { return const_iterator(n) != c->constEnd(); } \
public: \
inline QMutable##C##Iterator(Q##C<Key,T> &container) \
: c(&container) \
{ c->setSharable(false); i = c->begin(); n = c->end(); } \
inline ~QMutable##C##Iterator() \
{ c->setSharable(true); } \
inline QMutable##C##Iterator &operator=(Q##C<Key,T> &container) \
{ c->setSharable(true); c = &container; c->setSharable(false); i = c->begin(); n = c->end(); return *this; } \
inline void toFront() { i = c->begin(); n = c->end(); } \
inline void toBack() { i = c->end(); n = c->end(); } \
inline bool hasNext() const { return const_iterator(i) != c->constEnd(); } \
inline Item next() { n = i++; return n; } \
inline Item peekNext() const { return i; } \
inline bool hasPrevious() const { return const_iterator(i) != c->constBegin(); } \
inline Item previous() { n = --i; return n; } \
inline Item peekPrevious() const { iterator p = i; return --p; } \
inline void remove() \
{ if (const_iterator(n) != c->constEnd()) { i = c->erase(n); n = c->end(); } } \
inline void setValue(const T &t) { if (const_iterator(n) != c->constEnd()) *n = t; } \
inline T &value() { Q_ASSERT(item_exists()); return *n; } \
inline const T &value() const { Q_ASSERT(item_exists()); return *n; } \
inline const Key &key() const { Q_ASSERT(item_exists()); return n.key(); } \
inline bool findNext(const T &t) \
{ while (const_iterator(n = i) != c->constEnd()) if (*i++ == t) return true; return false; } \
inline bool findPrevious(const T &t) \
{ while (const_iterator(i) != c->constBegin()) if (*(n = --i) == t) return true; \
n = c->end(); return false; } \
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QITERATOR_H
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