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/****************************************************************************
**
** Copyright (C) 2008-2012 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3DS_FOUNDATION_INVASIVE_SET_H
#define QT3DS_FOUNDATION_INVASIVE_SET_H
#include "foundation/Qt3DS.h"
#include "foundation/Qt3DSAllocator.h"
#include "foundation/Qt3DSAllocatorCallback.h"
#include "foundation/Qt3DSContainers.h"
namespace qt3ds {
namespace foundation {
template <typename TObjectType, typename TGetSetIndexOp, typename TSetSetIndexOp>
class InvasiveSet
{
nvvector<TObjectType *> mSet;
InvasiveSet(const InvasiveSet &other);
InvasiveSet &operator=(const InvasiveSet &other);
public:
InvasiveSet(NVAllocatorCallback &callback, const char *allocName)
: mSet(callback, allocName)
{
}
bool insert(TObjectType &inObject)
{
QT3DSU32 currentIdx = TGetSetIndexOp()(inObject);
if (currentIdx == QT3DS_MAX_U32) {
TSetSetIndexOp()(inObject, mSet.size());
mSet.push_back(&inObject);
return true;
}
return false;
}
bool remove(TObjectType &inObject)
{
QT3DSU32 currentIdx = TGetSetIndexOp()(inObject);
if (currentIdx != QT3DS_MAX_U32) {
TObjectType *theEnd = mSet.back();
TObjectType *theObj = &inObject;
if (theEnd != theObj) {
TSetSetIndexOp()(*theEnd, currentIdx);
mSet[currentIdx] = theEnd;
}
mSet.pop_back();
TSetSetIndexOp()(inObject, QT3DS_MAX_U32);
return true;
}
return false;
}
bool contains(TObjectType &inObject) { return TGetSetIndexOp()(inObject) != QT3DS_MAX_U32; }
void clear()
{
for (QT3DSU32 idx = 0; idx < mSet.size(); ++idx)
TSetSetIndexOp()(*(mSet[idx]), QT3DS_MAX_U32);
mSet.clear();
}
TObjectType *operator[](QT3DSU32 idx) { return mSet[idx]; }
const TObjectType *operator[](QT3DSU32 idx) const { return mSet[idx]; }
QT3DSU32 size() const { return mSet.size(); }
TObjectType **begin() { return mSet.begin(); }
TObjectType **end() { return mSet.end(); }
const TObjectType **begin() const { return mSet.begin(); }
const TObjectType **end() const { return mSet.end(); }
const TObjectType *back() const { return mSet.back(); }
TObjectType *back() { return mSet.back(); }
};
}
}
#endif
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