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Diffstat (limited to 'src/script/qscriptbuffer_p.h')
| -rw-r--r-- | src/script/qscriptbuffer_p.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/script/qscriptbuffer_p.h b/src/script/qscriptbuffer_p.h new file mode 100644 index 0000000000..92fe6dbe25 --- /dev/null +++ b/src/script/qscriptbuffer_p.h @@ -0,0 +1,206 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtScript 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 QSCRIPTBUFFER_P_H +#define QSCRIPTBUFFER_P_H + +#include <QtCore/qglobal.h> + +QT_BEGIN_NAMESPACE + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +namespace QScript +{ + template <typename T> class Buffer + { + public: + typedef T *iterator; + typedef const T *const_iterator; + + Buffer() : m_data(0), m_capacity(0), m_size(0) { } + ~Buffer() { delete [] m_data; } + + inline void reserve(int num); + inline void reset(); + inline void clear(); + inline void append(const T &t); + + inline iterator begin(); + inline iterator end(); + + inline const_iterator begin() const; + inline const_iterator end() const; + + inline int size() const; + inline void resize(int s); + + inline int capacity() const; + inline T *data(); + inline const T *constData() const; + + inline T &last(); + inline T &takeLast(); + + inline T &at(int i) { return (*this)[i]; } + inline const T &at(int i) const { return (*this)[i]; } + + inline T &operator[](int i); + inline const T &operator[](int i) const; + + inline bool isEmpty() const; + + private: + T *m_data; + int m_capacity; + int m_size; + + private: + Q_DISABLE_COPY(Buffer) + }; + +} // namespace QScript + +template <typename T> T *QScript::Buffer<T>::data() { return m_data; } +template <typename T> const T *QScript::Buffer<T>::constData() const { return m_data; } +template <typename T> void QScript::Buffer<T>::reset() { m_size = 0; } +template <typename T> int QScript::Buffer<T>::capacity() const { return m_capacity; } + +template <typename T> int QScript::Buffer<T>::size() const { return m_size; } +template <typename T> void QScript::Buffer<T>::resize(int s) +{ + if (m_capacity < s) + reserve (s << 1); + + m_size = s; +} + +template <typename T> void QScript::Buffer<T>::clear() +{ + delete [] m_data; + m_data = 0; + m_size = 0; + m_capacity = 0; +} + +template <typename T> void QScript::Buffer<T>::reserve(int x) +{ + // its an ever expanding buffer so it never gets smaller.. + if (x < m_capacity) + return; + m_capacity = x; + T *new_data = new T[m_capacity]; + for (int i=0; i<m_size; ++i) + new_data[i] = m_data[i]; + delete [] m_data; + m_data = new_data; +} + +template <typename T> void QScript::Buffer<T>::append(const T &t) +{ + if (m_size == m_capacity) + reserve(m_capacity + 32); + m_data[m_size++] = t; +} + +template <typename T> T &QScript::Buffer<T>::operator[](int i) +{ + Q_ASSERT(i >= 0); + Q_ASSERT(i < m_size); + return m_data[i]; +} + +template <typename T> const T &QScript::Buffer<T>::operator[](int i) const +{ + Q_ASSERT(i >= 0); + Q_ASSERT(i < m_size); + return m_data[i]; +} + +template <typename T> bool QScript::Buffer<T>::isEmpty() const +{ + return m_size == 0; +} + +template <typename T> T &QScript::Buffer<T>::takeLast() +{ + Q_ASSERT(!isEmpty()); + --m_size; + return m_data[m_size]; +} + +template <typename T> T &QScript::Buffer<T>::last() +{ + return m_data[m_size - 1]; +} + +template <typename T> typename QScript::Buffer<T>::iterator QScript::Buffer<T>::begin() +{ + return m_data; +} + +template <typename T> typename QScript::Buffer<T>::iterator QScript::Buffer<T>::end() +{ + return m_data + m_size; +} + +template <typename T> typename QScript::Buffer<T>::const_iterator QScript::Buffer<T>::begin() const +{ + return m_data; +} + +template <typename T> typename QScript::Buffer<T>::const_iterator QScript::Buffer<T>::end() const +{ + return m_data + m_size; +} + +QT_END_NAMESPACE + +#endif |