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 %TITLE 'WFREACUR - read current line'
MODULE WFREACUR (				! Read current line
		IDENT = '3-001'			! File: WFREACUR.BLI Edit: GB3001
		) =
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:
!
!	Read current line.
!
! ENVIRONMENT:	Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: October 16, 1978
!
! MODIFIED BY:
!
! 1-001	- Original.  DJS 23-Feb-1981.  This module was created by
!	extracting routine EDT$$RD_CURLN  from module EDTWF.
! 1-002	- Regularized headers.  JBS 25-Feb-1981
! 1-003	- regularize headers.  JBS 19-Mar-1981
! 1-004	- Remove EDT$$SET_WKLN.  JBS 14-Sep-1982
! 3-001 - Add updates from V3 sources.  GB  9-May-1983
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$RD_CURLN : NOVALUE;

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$RD_CURLN  - read current line'

GLOBAL ROUTINE EDT$$RD_CURLN 			! Read current line
    : NOVALUE =

!++
! FUNCTIONAL DESCRIPTION:
!
!	Insure that the current line in the current buffer is accessable in
!	memory.  Read the current bucket and update the WK_LN  pointer to the
!	current line in the bucket.
!
! FORMAL PARAMETERS:
!
!	NONE
!
! IMPLICIT INPUTS:
!
!	CUR_BUF
!	WK_BUK
!	WK_CURBUK
!
! IMPLICIT OUTPUTS:
!
!	WK_LN
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$WF_MAKECUR : NOVALUE,
	EDT$$RD_NXTLN;

    EXTERNAL
	CUR_BUF : REF TBCB_BLOCK,	! Current text buffer control block
	WK_BUK : 			! Pointer to current bucket
	    REF BLOCK [WF_BUKT_SIZE] FIELD (WFB_FIELDS),
	WK_CURBUK,			! Number of the current bucket
	WK_LN : REF LIN_BLOCK;		! Pointer to the work line

!+
! Get the current bucket.
!-

    IF (.WK_CURBUK NEQ .CUR_BUF [TBCB_CUR_BUKT])
    THEN
	EDT$$WF_MAKECUR (.CUR_BUF [TBCB_CUR_BUKT]);

!+
! And update line point to point to the current line.
!-

    IF (.CUR_BUF [TBCB_LINE_ADDR] EQL .WK_BUK [WFB_END])
    THEN
	EDT$$RD_NXTLN ()
    ELSE
	WK_LN = .WK_BUK +.CUR_BUF [TBCB_LINE_ADDR];

    END;


END
ELUDOM