| \ ***************************************************************************** |
| \ * Copyright (c) 2004, 2007 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 |
| |
