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 %TITLE 'LDEFM - DEFINE MACRO line-mode command'
MODULE LDEFM (				! DEFINE MACRO line-mode command
		IDENT = '1-005'			! File: LDEFM.BLI Edit: JBS1005
		) =
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:
!
!	This module executes the line mode DEFINE MACRO command.
!
! ENVIRONMENT:	Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: February 3, 1978
!
! MODIFIED BY:
!
! 1-001	- Original.  DJS 30-JAN-1981.  This module was created by
!	extracting the routine EDT$$DEFM_CMD  from the module EXEC.BLI.
! 1-002	- Regularize headers.  JBS 19-Mar-1981
! 1-003 - Implement virtual memory deallocation ,and remove the separate
! 	  macro description block. Add a field to the TBCB whic will point
!	  to the buffer containing the next macro . TMV 6-Aug-81
! 1-004	- Use the new message codes.  JBS 06-Aug-1981
! 1-005	- Regularize format.  JBS 04-May-1982
!--

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

REQUIRE 'EDTSRC:TRAROUNAM';

FORWARD ROUTINE
    EDT$$DEFM_CMD : NOVALUE;			! Process the DEFINE MACRO command

!
! INCLUDE FILES:
!

REQUIRE 'EDTSRC:EDTREQ';

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!
!	NONE
!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!
!	In the routine
%SBTTL 'EDT$$DEFM_CMD  - DEFINE MACRO line-mode command'

GLOBAL ROUTINE EDT$$DEFM_CMD 			! DEFINE MACRO line-mode command
    : NOVALUE =

!++
! FUNCTIONAL DESCRIPTION:
!
!	Command processing routine for DEFINE MACRO.  A new text buffer
!	is created if it did not already exist, and it is added to the
!	list of macros.  Each macro is described by a control block
!	called a MAC_DESC which has a pointer to the TBCB for the macro
!	and the address of the next MAC_DESC.
!
! FORMAL PARAMETERS:
!
!	NONE
!
! IMPLICIT INPUTS:
!
!	EXE_CURCMD
!
! IMPLICIT OUTPUTS:
!
!	NONE
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS:
!
!	NONE
!
!--

    BEGIN

    EXTERNAL ROUTINE
	EDT$$FMT_MSG,
	EDT$$FND_BUF,
	EDT$$RD_CURLN;

    EXTERNAL
	BUF_LST : REF TBCB_BLOCK,
	CUR_BUF : REF TBCB_BLOCK,
	EXE_CURCMD : REF NODE_BLOCK;	! Pointer to the current command.

    MESSAGES ((INSMEM));

    LOCAL
	SAVE_TBCB,
	RANGE : REF NODE_BLOCK;

!+
! Save current TBCB so we can get back,
!-
    SAVE_TBCB = .CUR_BUF;
    RANGE = .EXE_CURCMD [RANGE1];
!+
! Find or create the buffer to be defined.
!-

    IF EDT$$FND_BUF (.RANGE [BUF_NAME], .RANGE [BUF_LEN])
    THEN
!+
! Designate the buffer as a macro.
!-
	CUR_BUF [TBCB_IS_MAC] = 1
    ELSE
!+
! Memory allocation failed.  Put out a message.
!-
	EDT$$FMT_MSG (EDT$_INSMEM);

!+
! Position back to the original text buffer.
!-
    CUR_BUF = .SAVE_TBCB;
    EDT$$RD_CURLN ();
    END;					! of routine EDT$$DEFM_CMD


END
ELUDOM