3 \ Date: Mon, 27 Nov 95 13:10:09 PST
5 \ (C) 1995 JOHNS HOPKINS UNIVERSITY / APPLIED PHYSICS LABORATORY
6 \ MAY BE DISTRIBUTED FREELY AS LONG AS THIS COPYRIGHT NOTICE REMAINS.
10 \ SET THE FOLLOWING FLAG TO TRUE FOR MORE VERBOSE OUTPUT; THIS MAY
11 \ ALLOW YOU TO TELL WHICH TEST CAUSED YOUR SYSTEM TO HANG.
15 : EMPTY-STACK \ ( ... -- ) EMPTY STACK: HANDLES UNDERFLOWED STACK TOO.
16 DEPTH ?DUP IF DUP 0< IF NEGATE 0 DO 0 LOOP ELSE 0 DO DROP LOOP THEN THEN ;
18 : ERROR \ ( C-ADDR U -- ) DISPLAY AN ERROR MESSAGE FOLLOWED BY
19 \ THE LINE THAT HAD THE ERROR.
20 TYPE SOURCE TYPE CR \ DISPLAY LINE CORRESPONDING TO ERROR
21 EMPTY-STACK \ THROW AWAY EVERY THING ELSE
24 VARIABLE ACTUAL-DEPTH \ STACK RECORD
25 CREATE ACTUAL-RESULTS 20 CELLS ALLOT
27 : { \ ( -- ) SYNTACTIC SUGAR.
30 : -> \ ( ... -- ) RECORD DEPTH AND CONTENT OF STACK.
31 DEPTH DUP ACTUAL-DEPTH ! \ RECORD DEPTH
32 ?DUP IF \ IF THERE IS SOMETHING ON STACK
33 0 DO ACTUAL-RESULTS I CELLS + ! LOOP \ SAVE THEM
36 : } \ ( ... -- ) COMPARE STACK (EXPECTED) CONTENTS WITH SAVED
38 DEPTH ACTUAL-DEPTH @ = IF \ IF DEPTHS MATCH
39 DEPTH ?DUP IF \ IF THERE IS SOMETHING ON THE STACK
40 0 DO \ FOR EACH STACK ITEM
41 ACTUAL-RESULTS I CELLS + @ \ COMPARE ACTUAL WITH EXPECTED
42 <> IF S" INCORRECT RESULT: " ERROR LEAVE THEN
46 S" WRONG NUMBER OF RESULTS: " ERROR
49 : TESTING \ ( -- ) TALKING COMMENT.
51 IF DUP >R TYPE CR R> >IN !