utlist.cxx

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#include "utlist.hxx"
namespace OpenStormBento
{
CUtListElmt::CUtListElmt(CUtList* pList)
    : cpNext(nullptr)
    , cpPrev(nullptr)
{
    if (pList != nullptr)
        InsertAfter(pList->GetLast());
}
 
CUtListElmt::~CUtListElmt()
{
    if (cpNext != nullptr)
    {
        cpPrev->cpNext = cpNext;
        cpNext->cpPrev = cpPrev;
    }
}
 
CUtList::~CUtList()
{
    CUtListElmt& rTerminating = GetTerminating();
    for (CUtListElmt* pCurr = GetFirst(); pCurr != &rTerminating;)
    {
        CUtListElmt* pNext = pCurr->GetNext();
        pCurr->MakeNotOnList();
        pCurr = pNext;
    }
    rTerminating.SetPrev(&rTerminating);
    rTerminating.SetNext(&rTerminating);
}
 
// If pCurr is NULL, returns first item in list.  Otherwise, returns item
// in list after pCurr or NULL if no more items in list.  Terminating item
// is never returned
CUtListElmt* CUtList::GetNextOrNULL(CUtListElmt const* pCurr)
{
    CUtListElmt* pNext;
 
    if (pCurr == nullptr)
        pNext = GetFirst();
    else
        pNext = pCurr->GetNext();
    if (pNext == &GetTerminating())
        pNext = nullptr;
    return pNext;
}
 
void CUtList::Destroy()
{
    CUtListElmt& rTerminating = GetTerminating();
    for (CUtListElmt* pCurr = GetFirst(); pCurr != &rTerminating;)
    {
        CUtListElmt* pNext = pCurr->GetNext();
        delete pCurr;
        pCurr = pNext;
    }
}
 
CUtOwningList::~CUtOwningList() { Destroy(); }
} //end namespace OpenStormBento
 
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