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 //! This class permits, from a string, to create any
0028 //! kind of expression of package Expr by using
0029 //! built-in functions such as Sin,Cos, etc, and by
0030 //! creating variables.
0031 class ExprIntrp_GenExp : public ExprIntrp_Generator
0032 {
0033
0034 public:
0035   Standard_EXPORT static occ::handle<ExprIntrp_GenExp> Create();
0036
0037   //! Processes given string.
0038   Standard_EXPORT void Process(const TCollection_AsciiString& str);
0039
0040   //! Returns false if any syntax error has occurred during
0041   //! process.
0042   Standard_EXPORT bool IsDone() const;
0043
0044   //! Returns expression generated. Raises an exception if
0045   //! IsDone answers false.
0046   Standard_EXPORT occ::handle<Expr_GeneralExpression> Expression() const;
0047
0048   DEFINE_STANDARD_RTTIEXT(ExprIntrp_GenExp, ExprIntrp_Generator)
0049
0050 private:
0051   //! Creates an empty generator
0052   Standard_EXPORT ExprIntrp_GenExp();
0053
0054   bool                                done;
0055   occ::handle<Expr_GeneralExpression> myExpression;
0056 };
0057
0058 #endif // _ExprIntrp_GenExp_HeaderFile