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// Copyright: Matra-Datavision 1991
// File: TCollection_AVLSearchTree.gxx
// Created: Thu May 23 16:57:42 1991
// Author: Jean-Pierre TIRAULT
// Transient implementation
//
#include <Standard_Address.hxx>
// Global variable
static Standard_Address LastNode;
// Global variable
void TCollection_AVLIterator::InOrderTraversal (const Standard_Address A) {
if (A) {
InOrderTraversal (((TCollection_AVLNode*)A)->Left());
TCollection_AVLList* S = new TCollection_AVLList;
S->Value() = ((TCollection_AVLNode*)A)->Value();
if (!FirstNode) {
FirstNode = (Standard_Address*)S;
LastNode = FirstNode;
}
else {
((TCollection_AVLList*)LastNode)->Next() = S;
LastNode = (Standard_Address)S;
}
InOrderTraversal (((TCollection_AVLNode*)A)->Right());
}
}
//-----------------------------------------------------------------------------
TCollection_AVLIterator::
TCollection_AVLIterator ( const TCollection_AVLSearchTree& aTree)
{
LastNode = FirstNode = NULL;
Standard_Address Root = (Standard_Address) aTree.GetRoot(); // Current node = root of tree
if (!Root) {
HasMore = Standard_False;
}
else {
HasMore = Standard_True;
InOrderTraversal(Root);
}
}
//-----------------------------------------------------------------------------
TCollection_AVLIterator::TCollection_AVLIterator ( const TCollection_AVLSearchTree& aTree, const Item& anItem)
{
LastNode = FirstNode = NULL;
Standard_Address Root;
if (aTree.Find(anItem,Root)) {
HasMore = Standard_True;
InOrderTraversal(Root);
}
else {
HasMore = Standard_False;
}
}
//-----------------------------------------------------------------------------
void TCollection_AVLIterator::Clear ()
{
LastNode = NULL ;
TCollection_AVLList* S = (TCollection_AVLList*)FirstNode;
TCollection_AVLList* P;
while (S) { // Memory management
P = S;
S = (TCollection_AVLList*)S->Next();
delete P;
}
FirstNode = NULL ;
HasMore = Standard_False;
}
//-----------------------------------------------------------------------------
const Item& TCollection_AVLIterator::Value () const
{
Standard_NoSuchObject_Raise_if(!HasMore,"TCollection_AVLIterator - No more object");
return ((TCollection_AVLList*)FirstNode)->Value();
}
//-----------------------------------------------------------------------------
void TCollection_AVLIterator::Next ()
{
Standard_NoSuchObject_Raise_if(!HasMore,"TCollection_AVLIterator - No more object");
TCollection_AVLList* S = (TCollection_AVLList*)FirstNode;
FirstNode = ((TCollection_AVLList*)FirstNode)->Next();
HasMore = (FirstNode != NULL);
delete S;
}
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