-- Created on: 1991-03-06
-- Created by: Denis Pascal
-- Copyright (c) 1991-1999 Matra Datavision
-- Copyright (c) 1999-2012 OPEN CASCADE SAS
--
-- The content of this file is subject to the Open CASCADE Technology Public
-- License Version 6.5 (the "License"). You may not use the content of this file
-- except in compliance with the License. Please obtain a copy of the License
-- at http://www.opencascade.org and read it completely before using this file.
--
-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
--
-- The Original Code and all software distributed under the License is
-- distributed on an "AS IS" basis, without warranty of any kind, and the
-- Initial Developer hereby disclaims all such warranties, including without
-- limitation, any warranties of merchantability, fitness for a particular
-- purpose or non-infringement. Please see the License for the specific terms
-- and conditions governing the rights and limitations under the License.



generic class GraphIterator from GraphTools (Graph  as any;
				             Vertex as any)
				  
-- template class GraphIterator from GraphTools (Graph  as any;
--                                                Vertex as any)

    	---Purpose: Template  class which defines   signatures  of  an
    	--          iterator  to  visit  each  vertex,   member of the
    	--          underlying graph.


raises NoMoreObject from Standard,
       NoSuchObject from Standard

is

    Create (G : Graph) returns GraphIterator;

    More (me) returns Boolean;
	---Purpose: Returns TRUE if there are other vertices.
        ---Level: Public
    
    Next (me : in out)
    	--- Purpose : Set the iterator to the next Vertex.
        ---Level: Public
    raises NoMoreObject from Standard;

    Value (me) returns Vertex
	--- Purpose: Returns the vertex value for the current position
	--  of the iterator
        ---Level: Public
    raises NoSuchObject from Standard;

end GraphIterator;