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1 | // Created on: 1991-02-06 |
2 | // Created by: Arnaud BOUZY |
3 | // Copyright (c) 1991-1999 Matra Datavision |
4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
5 | // |
6 | // This file is part of Open CASCADE Technology software library. |
7 | // |
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. |
13 | // |
14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
16 | |
17 | #ifndef _Expr_RUIterator_HeaderFile |
18 | #define _Expr_RUIterator_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Handle.hxx> |
23 | |
24 | #include <Expr_MapOfNamedUnknown.hxx> |
25 | #include <Standard_Integer.hxx> |
26 | #include <Standard_Boolean.hxx> |
27 | class Standard_NoMoreObject; |
28 | class Standard_NoSuchObject; |
29 | class Expr_GeneralRelation; |
30 | class Expr_NamedUnknown; |
31 | |
32 | |
33 | //! Iterates on NamedUnknowns in a GeneralRelation. |
34 | class Expr_RUIterator |
35 | { |
36 | public: |
37 | |
38 | DEFINE_STANDARD_ALLOC |
39 | |
40 | |
41 | //! Creates an iterator on every NamedUnknown contained in |
42 | //! <rel>. |
43 | Standard_EXPORT Expr_RUIterator(const Handle(Expr_GeneralRelation)& rel); |
44 | |
45 | //! Returns False if on other unknown remains. |
46 | Standard_EXPORT Standard_Boolean More() const; |
47 | |
48 | Standard_EXPORT void Next(); |
49 | |
50 | //! Returns current NamedUnknown. |
51 | //! Raises exception if no more unknowns remain. |
52 | Standard_EXPORT Handle(Expr_NamedUnknown) Value() const; |
53 | |
54 | |
55 | |
56 | |
57 | protected: |
58 | |
59 | |
60 | |
61 | |
62 | |
63 | private: |
64 | |
65 | |
66 | |
67 | Expr_MapOfNamedUnknown myMap; |
68 | Standard_Integer myCurrent; |
69 | |
70 | |
71 | }; |
72 | |
73 | |
74 | |
75 | |
76 | |
77 | |
78 | |
79 | #endif // _Expr_RUIterator_HeaderFile |