1 // Created on: 1997-12-16 2 // Created by: Denis PASCAL 3 // Copyright (c) 1997-1999 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 _TDataStd_Expression_HeaderFile 18 #define _TDataStd_Expression_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_Type.hxx> 22 23 #include <TCollection_ExtendedString.hxx> 24 #include <TDF_AttributeList.hxx> 25 #include <TDF_Attribute.hxx> 26 #include <Standard_OStream.hxx> 27 class Standard_GUID; 28 class TDF_Label; 29 class TCollection_ExtendedString; 30 class TDF_Attribute; 31 class TDF_RelocationTable; 32 33 34 class TDataStd_Expression; 35 DEFINE_STANDARD_HANDLE(TDataStd_Expression, TDF_Attribute) 36 37 //! Expression attribute. 38 //! ==================== 39 //! 40 //! * Data Structure of the Expression is stored in a 41 //! string and references to variables used by the string 42 //! 43 //! Warning: To be consistent, each Variable referenced by the 44 //! expression must have its equivalent in the string 45 class TDataStd_Expression : public TDF_Attribute 46 { 47 48 public: 49 50 51 //! class methods 52 //! ============= 53 Standard_EXPORT static const Standard_GUID& GetID(); 54 55 //! Find, or create, an Expression attribute. 56 //! Expressionmethods 57 //! ============ 58 Standard_EXPORT static Handle(TDataStd_Expression) Set (const TDF_Label& label); 59 60 Standard_EXPORT TDataStd_Expression(); 61 62 //! build and return the expression name 63 Standard_EXPORT TCollection_ExtendedString Name() const; 64 65 Standard_EXPORT void SetExpression (const TCollection_ExtendedString& E); 66 67 Standard_EXPORT const TCollection_ExtendedString& GetExpression() const; 68 69 Standard_EXPORT TDF_AttributeList& GetVariables(); 70 71 Standard_EXPORT const Standard_GUID& ID() const Standard_OVERRIDE; 72 73 Standard_EXPORT void Restore (const Handle(TDF_Attribute)& With) Standard_OVERRIDE; 74 75 Standard_EXPORT Handle(TDF_Attribute) NewEmpty() const Standard_OVERRIDE; 76 77 Standard_EXPORT void Paste (const Handle(TDF_Attribute)& Into, const Handle(TDF_RelocationTable)& RT) const Standard_OVERRIDE; 78 79 Standard_EXPORT virtual Standard_OStream& Dump (Standard_OStream& anOS) const Standard_OVERRIDE; 80 81 82 83 84 DEFINE_STANDARD_RTTIEXT(TDataStd_Expression,TDF_Attribute) 85 86 protected: 87 88 89 90 91 private: 92 93 94 TCollection_ExtendedString myExpression; 95 TDF_AttributeList myVariables; 96 97 98 }; 99 100 101 102 103 104 105 106 #endif // _TDataStd_Expression_HeaderFile 107