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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
// distribution of this software and related documentation without an express
// license agreement from NVIDIA Corporation is strictly prohibited.
//
// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Information and code furnished is believed to be accurate and reliable.
// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright (c) 2016-2018 NVIDIA Corporation. All rights reserved.
#ifndef NVBLASTITERATORBASE_H
#define NVBLASTITERATORBASE_H
#include "NvBlastIndexFns.h"
namespace Nv
{
namespace Blast
{
/**
Common functionality and implementation for iterators over an index, using invalidIndex<T>() to indicate termination.
Derived class needs to implement increment operators.
*/
template<typename T>
class IteratorBase
{
public:
/** Constructor sets m_curr value */
IteratorBase(T curr);
/** Validity of current value. */
operator bool() const;
/** Current value. */
operator T() const;
protected:
T m_curr;
};
//////// IteratorBase<T> inline methods ////////
template<typename T>
NV_INLINE IteratorBase<T>::IteratorBase(T curr) : m_curr(curr)
{
}
template<typename T>
NV_INLINE IteratorBase<T>::operator bool() const
{
return !isInvalidIndex<T>(m_curr);
}
template<typename T>
NV_INLINE IteratorBase<T>::operator T() const
{
return m_curr;
}
/**
Common functionality and implementation for an indexed linked list iterator
*/
template<typename IndexType>
class LListIt : public IteratorBase<IndexType>
{
public:
LListIt(IndexType curr, IndexType* links);
/** Pre-increment. Only use if valid() == true. */
uint32_t operator ++ ();
protected:
IndexType* m_links;
};
//////// LListIt<IndexType> inline methods ////////
template<typename IndexType>
NV_INLINE LListIt<IndexType>::LListIt(IndexType curr, IndexType* links) : IteratorBase<IndexType>(curr), m_links(links)
{
}
template<typename IndexType>
NV_INLINE uint32_t LListIt<IndexType>::operator ++ ()
{
NVBLAST_ASSERT((bool)(*this));
return (this->m_curr = m_links[this->m_curr]);
}
/**
Common functionality and implementation for an IndexDList<IndexType> iterator
*/
template<typename IndexType>
class DListIt : public IteratorBase<IndexType>
{
public:
DListIt(IndexType curr, IndexDLink<IndexType>* links);
/** Pre-increment. Only use if valid() == true. */
uint32_t operator ++ ();
protected:
IndexDLink<IndexType>* m_links;
};
//////// DListIt<IndexType> inline methods ////////
template<typename IndexType>
NV_INLINE DListIt<IndexType>::DListIt(IndexType curr, IndexDLink<IndexType>* links) : IteratorBase<IndexType>(curr), m_links(links)
{
}
template<typename IndexType>
NV_INLINE uint32_t DListIt<IndexType>::operator ++ ()
{
NVBLAST_ASSERT((bool)(*this));
return (this->m_curr = m_links[this->m_curr].m_adj[1]);
}
} // end namespace Blast
} // end namespace Nv
#endif // #ifndef NVBLASTITERATORBASE_H
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