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 %TITLE 'LNONCTG - test for non-contiguous range'
MODULE LNONCTG (				! Test for non-contiguous range
		IDENT = '1-003'			! File: LNONCTG.BLI Edit: JBS1003
		) =
BEGIN
!COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1981, 1988.  ALL RIGHTS RESERVED.
!
!THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED ONLY
!IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE INCLUSION OF 
!THE ABOVE COPYRIGHT NOTICE.  THIS SOFTWARE OR ANY OTHER COPIES THEREOF MAY 
!NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY OTHER PERSON.  NO TITLE
!TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY TRANSFERRED.
!
!THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE AND 
!SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT CORPORATION.
!
!DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS 
!SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY DIGITAL.
!
!
!++
! FACILITY:	EDT -- The DEC Standard Editor
!
! ABSTRACT:
!
!	Test for a non-contiguous range.
!
! ENVIRONMENT:	Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: February 3, 1978
!
! MODIFIED BY:
!
! 1-001	- Original.  DJS 10-MAR-81.  This module was created by
!	extracting the routine EDT$$TST_NONCNTGRNG  from EXEC.BLI.
! 1-002	- Regularize headers.  JBS 20-Mar-1981
! 1-003	- Use new message codes.  JBS 04-Aug-1981
!--

%SBTTL 'Declarations'
!
! TABLE OF CONTENTS:
!

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$TST_NONCNTGRNG;

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$TST_NONCNTGRNG  - test for non-contiguous range'

GLOBAL ROUTINE EDT$$TST_NONCNTGRNG (		! Test for non-contiguous range
	RANGE					! The range to test
    ) =

!++
! FUNCTIONAL DESCRIPTION:
!
!	This routine takes a range node and determines whether or not it
!	defines a contiguous range.  The range is non-contiguous if it is
!	a ALL or if the next range field is non-zero, indicating and AND.
!
! FORMAL PARAMETERS:
!
!  RANGE		The range to test
!
! IMPLICIT INPUTS:
!
!	NONE
!
! IMPLICIT OUTPUTS:
!
!	NONE
!
! ROUTINE VALUE:
!
!	0 = range is contiguous, 1 = range is non-contiguous
!
! SIDE EFFECTS:
!
!	Prints a message if the range is non-contiguous.
!	Calls itself recursively if the range refers to a buffer.
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$FMT_MSG;

    MESSAGES ((RANNONCON));

    MAP
	RANGE : REF NODE_BLOCK;

    IF ((.RANGE [RAN_TYPE] EQL RAN_ALL) OR (.RANGE [NEXT_RANGE] NEQ 0))
    THEN
	BEGIN
	EDT$$FMT_MSG (EDT$_RANNONCON);
	RETURN (1);
	END
    ELSE
!+
! If is is a buffer range, we better look at the range below it.
!-

	IF (.RANGE [RAN_TYPE] EQL RAN_BUFFER)
	THEN
	    RETURN (EDT$$TST_NONCNTGRNG (.RANGE [RANGE1]))
	ELSE
	    RETURN (0);

    END;


END
ELUDOM