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\ *****************************************************************************
\ * Copyright (c) 2004, 2008 IBM Corporation
\ * All rights reserved.
\ * This program and the accompanying materials
\ * are made available under the terms of the BSD License
\ * which accompanies this distribution, and is available at
\ * http://www.opensource.org/licenses/bsd-license.php
\ *
\ * Contributors:
\ * IBM Corporation - initial implementation
\ ****************************************************************************/
: ([IF])
BEGIN
BEGIN parse-word dup 0= WHILE
2drop refill
REPEAT
2dup s" [IF]" str= IF 1 throw THEN
2dup s" [ELSE]" str= IF 2 throw THEN
2dup s" [THEN]" str= IF 3 throw THEN
s" \" str= IF linefeed parse 2drop THEN
AGAIN
;
: [IF] ( flag -- )
IF exit THEN
1 BEGIN
['] ([IF]) catch
CASE
1 OF 1+ ENDOF
2 OF dup 1 = if 1- then ENDOF
3 OF 1- ENDOF
ENDCASE
dup 0 <=
UNTIL drop
; immediate
: [ELSE] 0 [COMPILE] [IF] ; immediate
: [THEN] ; immediate
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