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1 | // Created on: 1991-09-18 |
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 | |
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17 | |
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18 | #include <Expr.hxx> |
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19 | #include <Expr_GeneralExpression.hxx> |
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20 | #include <Expr_NamedUnknown.hxx> |
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21 | #include <Expr_UnknownIterator.hxx> |
22 | #include <Standard_NoMoreObject.hxx> |
23 | #include <Standard_NoSuchObject.hxx> |
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24 | |
25 | Expr_UnknownIterator::Expr_UnknownIterator (const Handle(Expr_GeneralExpression)& exp) |
26 | { |
27 | Perform(exp); |
28 | myCurrent = 1; |
29 | } |
30 | |
31 | void Expr_UnknownIterator::Perform(const Handle(Expr_GeneralExpression)& exp) |
32 | { |
33 | if (exp->IsKind(STANDARD_TYPE(Expr_NamedUnknown))) { |
34 | Handle(Expr_NamedUnknown) varexp = Handle(Expr_NamedUnknown)::DownCast(exp); |
35 | if (!myMap.Contains(varexp)) { |
36 | myMap.Add(varexp); |
37 | } |
38 | } |
39 | Standard_Integer nbsub = exp->NbSubExpressions(); |
40 | for (Standard_Integer i = 1; i <= nbsub ; i++) { |
41 | Perform(exp->SubExpression(i)); |
42 | } |
43 | } |
44 | |
45 | Standard_Boolean Expr_UnknownIterator::More() const |
46 | { |
47 | return (myCurrent <= myMap.Extent()); |
48 | } |
49 | |
50 | void Expr_UnknownIterator::Next () |
51 | { |
52 | if (!More()) { |
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53 | throw Standard_NoMoreObject(); |
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54 | } |
55 | myCurrent++; |
56 | } |
57 | |
58 | Handle(Expr_NamedUnknown) Expr_UnknownIterator::Value () const |
59 | { |
60 | return myMap(myCurrent); |
61 | } |
62 | |