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1 | // Created on: 1991-08-08 |
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 <ExprIntrp_GenExp.ixx> |
18 | #include <ExprIntrp.hxx> |
19 | #include <ExprIntrp_yaccanal.hxx> |
20 | #include <Standard_NoSuchObject.hxx> |
21 | |
22 | ExprIntrp_GenExp::ExprIntrp_GenExp () |
23 | { |
24 | done = Standard_False; |
25 | } |
26 | |
27 | Handle( ExprIntrp_GenExp ) ExprIntrp_GenExp::Create() |
28 | { |
29 | return new ExprIntrp_GenExp(); |
30 | } |
31 | |
32 | void ExprIntrp_GenExp::Process (const TCollection_AsciiString& str) |
33 | { |
34 | Handle(ExprIntrp_GenExp) me = this; |
35 | done = Standard_False; |
36 | if (ExprIntrp::Parse(me,str)) { |
37 | if (!ExprIntrp_Recept.IsExpStackEmpty()) { |
38 | myExpression = ExprIntrp_Recept.Pop(); |
39 | done = Standard_True; |
40 | } |
41 | else { |
42 | myExpression.Nullify(); |
43 | done = Standard_True; |
44 | } |
45 | } |
46 | else { |
47 | myExpression.Nullify(); |
48 | } |
49 | } |
50 | |
51 | Standard_Boolean ExprIntrp_GenExp::IsDone() const |
52 | { |
53 | return done; |
54 | } |
55 | |
56 | Handle(Expr_GeneralExpression) ExprIntrp_GenExp::Expression () const |
57 | { |
58 | if (!done) { |
59 | Standard_NoSuchObject::Raise(); |
60 | } |
61 | return myExpression; |
62 | } |
63 | |