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/****************************************************************************
**
** Copyright (C) 1993-2009 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
//==============================================================================
// Namespace
//==============================================================================
namespace Q3DStudio {
//==============================================================================
/**
* Circular array. Not growable for now.
* The "streamlined" interface acts like a resource pool where construction of
* item T is minimized.
*/
template <class T>
class CCircularArray
{
//==============================================================================
// Types
//==============================================================================
public:
typedef T TType; ///< Easy access to template type
//==============================================================================
// Fields
//==============================================================================
protected:
CHAR m_Name[32]; ///< Allows easy ID if it grows too much
T *m_Data; ///< Allocated memory containing array data
INT32 m_Capacity; ///< Max number of elements possible
INT32 m_Count; ///< Current number of elements in array
INT32 m_Begin; ///< circular list indices
INT32 m_End; ///< circular list indices
// For 32-bit alignment
BOOL m_Full; ///< flag to indicate circular list is full
BOOL m_Paddings[3]; ///< Padding
//==============================================================================
// Methods
//==============================================================================
public: // Construction
inline CCircularArray(const INT32 inCapacity = 0, const CHAR *inName = NULL);
inline ~CCircularArray();
public: // Management
inline INT32 GetCount() const;
inline INT32 GetCapacity() const;
inline void Clear(const BOOL inRelease = false);
inline void Reserve(const INT32 inCapacity);
public: // Stack access
inline T &NewEntry();
inline void Pop();
inline T &Top();
public: // Status
BOOL IsEmpty() const;
BOOL IsFull() const;
protected: // Internal methods
void Increment(INT32 &outIndex);
void Decrement(INT32 &outIndex);
void UpdateFullStatus();
};
} // namespace Q3DStudio
//==============================================================================
// Template code
//==============================================================================
#include "Qt3DSCircularArray.inl"
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