include/opencascade/ExprIntrp_GenExp.hxx

0001 // Created on: 1991-07-18
0002 // Created by: Arnaud BOUZY
0003 // Copyright (c) 1991-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _ExprIntrp_GenExp_HeaderFile
0018 #define _ExprIntrp_GenExp_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_Type.hxx>
0022
0023 #include <ExprIntrp_Generator.hxx>
0024 class Expr_GeneralExpression;
0025 class TCollection_AsciiString;
0026
0027
0028 class ExprIntrp_GenExp;
0029 DEFINE_STANDARD_HANDLE(ExprIntrp_GenExp, ExprIntrp_Generator)
0030
0031 //! This class permits, from a string, to create any
0032 //! kind of expression of package Expr by using
0033 //! built-in functions such as Sin,Cos, etc, and by
0034 //! creating variables.
0035 class ExprIntrp_GenExp : public ExprIntrp_Generator
0036 {
0037
0038 public:
0039
0040
0041   Standard_EXPORT static Handle(ExprIntrp_GenExp) Create();
0042
0043   //! Processes given string.
0044   Standard_EXPORT void Process (const TCollection_AsciiString& str);
0045
0046   //! Returns false if any syntax error has occurred during
0047   //! process.
0048   Standard_EXPORT Standard_Boolean IsDone() const;
0049
0050   //! Returns expression generated. Raises an exception if
0051   //! IsDone answers false.
0052   Standard_EXPORT Handle(Expr_GeneralExpression) Expression() const;
0053
0054
0055
0056
0057   DEFINE_STANDARD_RTTIEXT(ExprIntrp_GenExp,ExprIntrp_Generator)
0058
0059 protected:
0060
0061
0062
0063
0064 private:
0065
0066
0067   //! Creates an empty generator
0068   Standard_EXPORT ExprIntrp_GenExp();
0069
0070   Standard_Boolean done;
0071   Handle(Expr_GeneralExpression) myExpression;
0072
0073
0074 };
0075
0076
0077
0078
0079
0080
0081
0082 #endif // _ExprIntrp_GenExp_HeaderFile