/*

* NIST STEP Core Class Library

* clstepcore/SingleLinkList.inline.cc

* April 1997

* David Sauder

* KC Morris

* Development of this software was funded by the United States Government,

* and is not subject to copyright.

*/

#include <SingleLinkList.h>

#include <iostream>

#include "sc_memmgr.h"

SingleLinkNode *

SingleLinkNode::NextNode() const {

return next;

}

SingleLinkList::SingleLinkList()

: head( 0 ), tail( 0 ) {

}

SingleLinkList::~SingleLinkList() {

Empty();

}

void SingleLinkList::Empty() {

SingleLinkNode * tmp = head;

while( tmp ) {

tmp = head -> NextNode();

delete head;

head = tmp;

}

}

SingleLinkNode * SingleLinkList::NewNode() {

// defined in subtypes

std::cerr << "\n\n******BUG****** a virtually defined function should \n"

<< "be called for SingleLinkList::NewNode()\n\n";

return new SingleLinkNode();

}

SingleLinkNode * SingleLinkList::GetHead() const {

return ( head );

}

int SingleLinkList::EntryCount() const {

int entryCount = 0;

SingleLinkNode * entryPtr = head;

while( entryPtr != 0 ) {

entryPtr = entryPtr->NextNode();

entryCount++;

}

return entryCount;

}