katie/src/core/tools/qstack.h

/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Copyright (C) 2016-2019 Ivailo Monev
**
** This file is part of the QtCore module of the Katie Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3.0 as published by the Free Software
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#ifndef QSTACK_H
#define QSTACK_H

#include <QtCore/qvector.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


template<class T>
class QStack : public QVector<T>
{
public:
    inline QStack() {}
    inline ~QStack() {}
    inline void swap(QStack<T> &other) { QVector<T>::swap(other); } // prevent QVector<->QStack swaps
    inline void push(const T &t) { QVector<T>::append(t); }
    inline T pop();
    inline T &top() { return QVector<T>::last(); }; // for compatibility
    const T &top() const { return QVector<T>::last(); }; // for compatibility
};

template<class T>
inline T QStack<T>::pop()
{ Q_ASSERT(!this->isEmpty()); T t = this->data()[this->size() -1];
  this->resize(this->size()-1); return t; }

QT_END_NAMESPACE

QT_END_HEADER

#endif // QSTACK_H