// Created by: DAUTRY Philippe
// Copyright (c) 1997-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

//      	-----------------------
// Version:	0.0
// Version	Date		Purpose
//		0.0	Nov 20 1997	Creation

#include <TDF_ChildIDIterator.hxx>
#include <TDF_ChildIterator.hxx>
#include <TDF_Label.hxx>
#include <TDF_LabelNode.hxx>

#define ChildIDIterator_FindNext                                                                   \
  {                                                                                                \
    while (myItr.More() && !myItr.Value().FindAttribute(myID, myAtt))                              \
      myItr.Next();                                                                                \
  }

//=================================================================================================

TDF_ChildIDIterator::TDF_ChildIDIterator() = default;

//=================================================================================================

TDF_ChildIDIterator::TDF_ChildIDIterator(const TDF_Label&     aLabel,
                                         const Standard_GUID& anID,
                                         const bool           allLevels)
    : myID(anID),
      myItr(aLabel, allLevels)
{
  ChildIDIterator_FindNext;
}

//=================================================================================================

void TDF_ChildIDIterator::Initialize(const TDF_Label&     aLabel,
                                     const Standard_GUID& anID,
                                     const bool           allLevels)
{
  myID = anID;
  myItr.Initialize(aLabel, allLevels);
  myAtt.Nullify();
  ChildIDIterator_FindNext;
}

//=================================================================================================

void TDF_ChildIDIterator::Next()
{
  myAtt.Nullify();
  if (myItr.More())
  {
    myItr.Next();
    ChildIDIterator_FindNext;
  }
}

//=================================================================================================

void TDF_ChildIDIterator::NextBrother()
{
  myAtt.Nullify();
  if (myItr.More())
  {
    myItr.NextBrother();
    while (myItr.More() && !myItr.Value().FindAttribute(myID, myAtt))
      myItr.NextBrother();
  }
}
