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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) 1981, 1985 BY
!	      DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
!		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 WHICH 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