+++ /dev/null
--- Created on: 1997-12-16
--- Created by: Denis PASCAL
--- Copyright (c) 1997-1999 Matra Datavision
--- Copyright (c) 1999-2014 OPEN CASCADE SAS
---
--- This file is part of Open CASCADE Technology software library.
---
--- This library is free software; you can redistribute it and/or modify it under
--- the terms of the GNU Lesser General Public License version 2.1 as published
--- by the Free Software Foundation, with special exception defined in the file
--- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
--- distribution for complete text of the license and disclaimer of any warranty.
---
--- Alternatively, this file may be used under the terms of Open CASCADE
--- commercial license or contractual agreement.
-
-class Expression from TDataStd inherits Attribute from TDF
-
- ---Purpose: Expression attribute.
- -- ====================
- --
- -- * Data Structure of the Expression is stored in a
- -- string and references to variables used by the string
- --
- -- Warning: To be consistent, each Variable referenced by the
- -- expression must have its equivalent in the string
-
-
-uses Attribute from TDF,
- Label from TDF,
- GUID from Standard,
- Real from Standard,
- DataSet from TDF,
- RelocationTable from TDF,
- ExtendedString from TCollection,
- AttributeList from TDF
-
-
-is
-
- ---Purpose: class methods
- -- =============
-
- GetID (myclass)
- ---C++: return const &
- returns GUID from Standard;
-
-
- Set (myclass ; label : Label from TDF)
- ---Purpose: Find, or create, an Expression attribute.
- returns Expression from TDataStd;
-
- ---Purpose: Expressionmethods
- -- ============
-
- Create
- returns Expression from TDataStd;
-
- Name (me)
- ---Purpose: build and return the expression name
- returns ExtendedString from TCollection;
-
- SetExpression (me : mutable; E : ExtendedString from TCollection);
-
- GetExpression (me)
- returns ExtendedString from TCollection;
- ---C++: return const &
-
- GetVariables (me : mutable)
- ---C++: return &
- returns AttributeList from TDF;
-
- ---Category: TDF_Attribute methods
- -- =====================
-
- ID (me)
- ---C++: return const &
- returns GUID from Standard;
-
- Restore (me: mutable; With : Attribute from TDF);
-
- NewEmpty(me)
- returns Attribute from TDF;
-
- Paste (me; Into : Attribute from TDF;
- RT : RelocationTable from TDF);
-
- Dump(me; anOS : in out OStream from Standard)
- returns OStream from Standard
- is redefined;
- ---C++: return &
-
-fields
-
- myExpression : ExtendedString from TCollection;
- myVariables : AttributeList from TDF;
-
-end Expression;