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[ATL] Add CAtlList::SwapElements

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This commit is contained in:
Mark Jansen 2023-04-12 23:25:36 +02:00
parent 9d7d3314b3
commit 08d808cc44
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2 changed files with 112 additions and 6 deletions
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43
sdk/lib/atl/atlcoll.h
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@ -494,6 +494,8 @@ public:
_In_opt_ POSITION posStartAfter = NULL) const;
POSITION FindIndex(_In_ size_t iElement) const;
void SwapElements(POSITION pos1, POSITION pos2);
private:
CNode* CreateNode(
INARGTYPE element,
@ -809,6 +811,45 @@ POSITION CAtlList< E, ETraits >::FindIndex(_In_ size_t iElement) const
return (POSITION)Node;
}
template<typename E, class ETraits>
void CAtlList< E, ETraits >::SwapElements(POSITION pos1, POSITION pos2)
{
if (pos1 == pos2)
return;
CNode *node1 = (CNode *)pos1;
CNode *node2 = (CNode *)pos2;
CNode *tmp = node1->m_Prev;
node1->m_Prev = node2->m_Prev;
node2->m_Prev = tmp;
if (node1->m_Prev)
node1->m_Prev->m_Next = node1;
else
m_HeadNode = node1;
if (node2->m_Prev)
node2->m_Prev->m_Next = node2;
else
m_HeadNode = node2;
tmp = node1->m_Next;
node1->m_Next = node2->m_Next;
node2->m_Next = tmp;
if (node1->m_Next)
node1->m_Next->m_Prev = node1;
else
m_TailNode = node1;
if (node2->m_Next)
node2->m_Next->m_Prev = node2;
else
m_TailNode = node2;
}
//
// CAtlist private methods
@ -897,4 +938,4 @@ private:
}
#endif
#endif