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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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GPG key ID: B39240EE84BEAE8B
2 changed files with 112 additions and 6 deletions
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75
modules/rostests/apitests/atl/CAtlList.cpp
View file

@ -14,9 +14,10 @@
#include <atlbase.h>
#include <atlcoll.h>
#include <atlstr.h>
START_TEST(CAtlList)
static void
test_BasicCases()
{
CAtlList<int> list1;
@ -29,18 +30,18 @@ START_TEST(CAtlList)
ok_size_t(list1.GetCount(), 3);
list1.InsertBefore(head, -123);
list1.InsertAfter(head, 34); // no longer head, but the POSITION should still be valid..
list1.InsertAfter(head, 34); // no longer head, but the POSITION should still be valid..
list1.InsertBefore(tail, 78);
list1.InsertAfter(tail, -44);
int expected[] = {-123, 12, 34, 56, 78, 90, -44 };
int expected[] = {-123, 12, 34, 56, 78, 90, -44};
int expected_size = sizeof(expected) / sizeof(expected[0]);
int index = 0;
POSITION it = list1.GetHeadPosition();
while (it != NULL)
{
ok(index < expected_size, "Too many items, expected %d, got %d!\n", expected_size, (index+1));
ok(index < expected_size, "Too many items, expected %d, got %d!\n", expected_size, (index + 1));
int value = list1.GetNext(it);
if (index < expected_size)
{
@ -54,3 +55,67 @@ START_TEST(CAtlList)
}
ok(it == NULL, "it does still point to something!\n");
}
static CStringW
to_str(const CAtlList<int>& lst)
{
CStringW tmp;
POSITION it = lst.GetHeadPosition();
while (it != NULL)
{
int value = lst.GetNext(it);
tmp.AppendFormat(L"%d,", value);
}
return tmp;
}
#define ok_list(lst, expected) \
do \
{ \
CStringW _value = to_str(lst); \
ok(_value == (expected), "Wrong value for '%s', expected: " #expected " got: \"%S\"\n", #lst, \
_value.GetString()); \
} while (0)
static void
test_SwapElements()
{
CAtlList<int> list;
list.AddTail(1);
list.AddTail(2);
list.AddTail(3);
ok_list(list, "1,2,3,");
POSITION p1 = list.FindIndex(0);
POSITION p2 = list.FindIndex(2);
list.SwapElements(p1, p1);
ok_list(list, "1,2,3,");
list.SwapElements(p1, p2);
ok_list(list, "3,2,1,");
p1 = list.FindIndex(0);
p2 = list.FindIndex(1);
list.SwapElements(p1, p2);
ok_list(list, "2,3,1,");
p1 = list.FindIndex(1);
p2 = list.FindIndex(2);
list.SwapElements(p1, p2);
ok_list(list, "2,1,3,");
p1 = list.FindIndex(0);
p2 = list.FindIndex(2);
list.SwapElements(p2, p1);
ok_list(list, "3,1,2,");
}
START_TEST(CAtlList)
{
test_BasicCases();
test_SwapElements();
}

43
sdk/lib/atl/atlcoll.h
View file

@ -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