-- File:	Dynamic_AbstractVariableInstance.cdl
-- Created:	Mon Sep  5 15:02:15 1994
-- Author:	Gilles DEBARBOUILLE
--		<gde@watson>
---Copyright:	 Matra Datavision 1994


deferred class AbstractVariableInstance from Dynamic

	---Purpose: This class is the header class to define instances
	--          of variables.  There  are two kinds  of instances,
	--          These  are VariableInstance  which  addresses only
	--          one Variable and CompositVariableInstance which is
	--          able to address  more than one variable. This last
	--          class is useful for methods with a variable number
	--          of arguments.

inherits

    Variable from Dynamic
   

is

    Initialize;
    
    Variable(me : mutable ; avariable : Variable from Dynamic)
    
    ---Level: Public
    
    ---Purpose: This  deferred method must     be implemented in   the
    --          derived    classes for  setting    reference(s) to the
    --          corresponding variable(s)  which define the  signature
    --          of the method definition.
    
    is deferred;
 
    
end AbstractVariableInstance;