-- File:	Intervals.cdl
-- Created:	Fri Dec 13 14:20:52 1991
-- Author:	Christophe MARION
--		<cma@sdsun1>
---Copyright:	 Matra Datavision 1991

class Intervals from Intrv
	---Purpose: The class  Intervals is a  sorted  sequence of non
	--          overlapping  Real Intervals.

uses
    Integer            from Standard,
    Interval           from Intrv,
    SequenceOfInterval from Intrv

raises
    OutOfRange

is
    Create returns Intervals from Intrv;
	---Purpose: Creates a void sequence of intervals.

    Create(Int : Interval from Intrv) returns Intervals from Intrv;
	---Purpose: Creates a sequence of one interval.
	
    Create(Int : Intervals from Intrv) returns Intervals from Intrv;
	---Purpose: Creates   by   copying  an   existing  sequence of
	--          intervals.
	
    Intersect(me : in out; Tool : Interval from Intrv)
	---Purpose: Intersects the intervals with the interval <Tool>.
    is static;

    Intersect(me : in out; Tool : Intervals from Intrv)
	---Purpose: Intersects the intervals with the intervals in the
	--          sequence  <Tool>.
    is static;

    Subtract(me : in out; Tool : Interval from Intrv)
    is static;

    Subtract(me : in out; Tool : Intervals from Intrv)
    is static;

    Unite(me : in out; Tool : Interval from Intrv)
    is static;

    Unite(me : in out; Tool : Intervals from Intrv)
    is static;

    XUnite(me : in out; Tool : Interval from Intrv)
    is static;

    XUnite(me : in out; Tool : Intervals from Intrv)
    is static;

    NbIntervals(me) returns Integer from Standard
    	---C++: inline
    is static;

    Value(me; Index : Integer from Standard) 
    returns Interval from Intrv
    	---C++: inline
    	---C++: return const &
    raises OutOfRange from Standard
    is static;
    
fields
    myInter : SequenceOfInterval from Intrv;

end Intervals;