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1 | // Created on: 1991-06-13 |
2 | // Created by: Arnaud BOUZY |
3 | // Copyright (c) 1991-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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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 |
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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. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
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16 | |
17 | #include <Expr_RelationIterator.ixx> |
18 | #include <Standard_NoMoreObject.hxx> |
19 | #include <Standard_NoSuchObject.hxx> |
20 | #include <Expr_SystemRelation.hxx> |
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21 | #include <Expr_SingleRelation.hxx> |
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22 | |
23 | Expr_RelationIterator::Expr_RelationIterator (const Handle(Expr_GeneralRelation)& rel):myRelation(1,rel->NbOfSingleRelations()) |
24 | { |
25 | if (rel->IsKind(STANDARD_TYPE(Expr_SingleRelation))) { |
26 | myRelation(1) = Handle(Expr_SingleRelation)::DownCast(rel); |
27 | } |
28 | else { |
29 | Standard_Integer nbcur = 1; |
30 | Handle(Expr_GeneralRelation) currel; |
31 | for (Standard_Integer i =1; i<= rel->NbOfSubRelations(); i++) { |
32 | currel = rel->SubRelation(i); |
33 | if (currel->IsKind(STANDARD_TYPE(Expr_SingleRelation))) { |
34 | myRelation(nbcur) = Handle(Expr_SingleRelation)::DownCast(currel); |
35 | nbcur++; |
36 | } |
37 | else { |
38 | Expr_RelationIterator subit(currel); |
39 | while (subit.More()) { |
40 | myRelation(nbcur) = subit.Value(); |
41 | subit.Next(); |
42 | nbcur++; |
43 | } |
44 | } |
45 | } |
46 | } |
47 | current = 1; |
48 | } |
49 | |
50 | Standard_Boolean Expr_RelationIterator::More () const |
51 | { |
52 | return (current <= myRelation.Length()); |
53 | } |
54 | |
55 | void Expr_RelationIterator::Next () |
56 | { |
57 | if (!More()) { |
58 | Standard_NoMoreObject::Raise(); |
59 | } |
60 | current++; |
61 | } |
62 | |
63 | Handle(Expr_SingleRelation) Expr_RelationIterator::Value () const |
64 | { |
65 | if (!More()) { |
66 | Standard_NoSuchObject::Raise(); |
67 | } |
68 | return myRelation(current); |
69 | } |
70 | |