1 // Created on: 1991-09-18
2 // Created by: Arnaud BOUZY
3 // Copyright (c) 1991-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #include <Expr_UnknownIterator.ixx>
18 #include <Standard_NoMoreObject.hxx>
19 #include <Standard_NoSuchObject.hxx>
22 Expr_UnknownIterator::Expr_UnknownIterator (const Handle(Expr_GeneralExpression)& exp)
28 void Expr_UnknownIterator::Perform(const Handle(Expr_GeneralExpression)& exp)
30 if (exp->IsKind(STANDARD_TYPE(Expr_NamedUnknown))) {
31 Handle(Expr_NamedUnknown) varexp = Handle(Expr_NamedUnknown)::DownCast(exp);
32 if (!myMap.Contains(varexp)) {
36 Standard_Integer nbsub = exp->NbSubExpressions();
37 for (Standard_Integer i = 1; i <= nbsub ; i++) {
38 Perform(exp->SubExpression(i));
42 Standard_Boolean Expr_UnknownIterator::More() const
44 return (myCurrent <= myMap.Extent());
47 void Expr_UnknownIterator::Next ()
50 Standard_NoMoreObject::Raise();
55 Handle(Expr_NamedUnknown) Expr_UnknownIterator::Value () const
57 return myMap(myCurrent);