/usr/include/opencascade/PCollection_DepthFirstIterator.gxx is in libopencascade-ocaf-lite-dev 6.5.0.dfsg-2build1.
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The actual contents of the file can be viewed below.
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// File: PCollection_DepthFirstIterator.gxx
// Created: Wed May 29 17:42:50 1991
// Author: Denis PASCAL
// <dp>
// Revised by: Mireille MERCIEN
// Sep,7 1992
#include <Standard_NoMoreObject.hxx>
#include <Standard_NoSuchObject.hxx>
//---------------------------------------------------------------------------
// Constructor
//---------------------------------------------------------------------------
PCollection_DepthFirstIterator::
PCollection_DepthFirstIterator(const Handle(PCollection_Vertex)& V)
{
Visited = new PCollection_SetOfVertex;
Ready = new PCollection_StackOfVertex;
Visited->Add(V);
Ready->Push(V);
HasMore = ! (Ready->IsEmpty());
}
//---------------------------------------------------------------------------
// More
//---------------------------------------------------------------------------
Boolean PCollection_DepthFirstIterator::More () const
{
return HasMore;
}
//---------------------------------------------------------------------------
// Next
//---------------------------------------------------------------------------
void PCollection_DepthFirstIterator::Next ()
{
if (!HasMore) Standard_NoMoreObject::Raise();
Handle(PCollection_Vertex) w1 = Ready->Top();
Ready->Pop();
PCollection_FrontEdgesIterator It(w1);
while (It.More()) {
Handle(PCollection_Vertex) w2 = It.Value()->Destination();
if (! (Visited->Contains(w2))) {
Ready->Push(w2);
Visited->Add(w2);
}
It.Next();
}
HasMore = !(Ready->IsEmpty());
}
//---------------------------------------------------------------------------
// Value
//---------------------------------------------------------------------------
Handle(PCollection_Vertex) PCollection_DepthFirstIterator::Value () const
{
if (HasMore)
return Ready->Top();
else
Standard_NoSuchObject::Raise();
}
//---------------------------------------------------------------------------
// Clear
//---------------------------------------------------------------------------
void PCollection_DepthFirstIterator::Clear ()
{
HasMore = False;
Ready->Nullify();
Visited->Nullify();
}
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