1 -- Created on: 1992-02-11
2 -- Created by: Christian CAILLET
3 -- Copyright (c) 1992-1999 Matra Datavision
4 -- Copyright (c) 1999-2012 OPEN CASCADE SAS
6 -- The content of this file is subject to the Open CASCADE Technology Public
7 -- License Version 6.5 (the "License"). You may not use the content of this file
8 -- except in compliance with the License. Please obtain a copy of the License
9 -- at http://www.opencascade.org and read it completely before using this file.
11 -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
12 -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
14 -- The Original Code and all software distributed under the License is
15 -- distributed on an "AS IS" basis, without warranty of any kind, and the
16 -- Initial Developer hereby disclaims all such warranties, including without
17 -- limitation, any warranties of merchantability, fitness for a particular
18 -- purpose or non-infringement. Please see the License for the specific terms
19 -- and conditions governing the rights and limitations under the License.
23 class UndefinedEntity from StepData inherits TShared
25 ---Purpose : Undefined entity specific to Step Interface, in which StepType
26 -- is defined at each instance, or is a SubList of another one
27 -- Uses an UndefinedContent, that from Interface is suitable.
28 -- Also an Entity defined by STEP can be "Complex Type" (see
29 -- ANDOR clause in Express).
31 uses AsciiString from TCollection, HAsciiString from TCollection,
32 UndefinedContent, Check, CopyTool, EntityIterator,
33 StepReaderData, StepWriter
37 Create returns mutable UndefinedEntity;
38 ---Purpose : creates an Unknown entity
40 Create (issub : Boolean) returns mutable UndefinedEntity;
41 ---Purpose : Creates a SubList of an Unknown entity : it is an Unknown
42 -- Entity with no Type, but flagged as "SUB" if issub is True
44 UndefinedContent (me) returns mutable UndefinedContent;
45 ---Purpose : Returns the UndefinedContent which brings the Parameters
48 IsSub (me) returns Boolean;
49 ---Purpose : Returns True if an Unndefined Entity is SubPart of another one
51 Super (me) returns mutable UndefinedEntity;
52 ---Purpose : Returns the "super-entity" of a sub-part
54 IsComplex (me) returns Boolean;
55 ---Purpose : Returns True if <me> defines a Multiple Type Entity (see ANDOR)
57 Next (me) returns mutable UndefinedEntity;
58 ---Purpose : For a Multiple Type Entity, returns the Next "Componant"
59 -- For more than two Types, iterative definition (Next->Next...)
60 -- Returns a Null Handle for the end of the List
63 StepType (me) returns CString;
64 ---Purpose : gives entity type, read from file
65 -- For a Complex Type Entity, gives the first Type read, each
66 -- "Next" gives its "partial" type
67 -- was C++ : return const
69 ReadRecord (me : mutable;
70 SR : StepReaderData; num : Integer; ach : in out Check);
71 ---Purpose : reads data from StepReaderData (i.e. from file), by filling
72 -- StepType and parameters stored in the UndefinedContent
74 WriteParams (me; SW : in out StepWriter);
75 ---Purpose : write data to StepWriter, taken from UndefinedContent
77 GetFromAnother (me : mutable; other : like me;
78 TC : in out CopyTool);
79 ---Purpose : reads another UndefinedEntity from StepData
81 FillShared (me; list : in out EntityIterator from Interface);
82 ---Purpose : Fills the list of shared entities
86 thetype : HAsciiString from TCollection;
87 thecont : UndefinedContent;
89 thenext : UndefinedEntity; -- for a Multiple Type Entity