1: \ Structural Conditionals, loops part 12dec92py
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20: \ Structural Conditionals 12dec92py
22: \ this works with flash
24: : (leave) -1 , ;
25: : LEAVE postpone branch (leave) ; immediate restrict
26: : ?LEAVE postpone 0= postpone ?branch (leave) ;
27: immediate restrict
29: : DONE ( addr -- ) here swap ?DO
30: I @ ['] branch = I @ ['] ?branch = or I @ ['] (?do) = or
31: I cell+ @ -1 = and IF I cell+ >resolve THEN
32: cell +LOOP ; immediate restrict
34: \ Structural Conditionals 12dec92py
36: : DO postpone (do) here ; immediate restrict
38: : ?DO postpone (?do) (leave) here ;
39: immediate restrict
40: : FOR postpone (for) here ; immediate restrict
42: : loop] dup <resolve 2 cells - postpone done postpone unloop ;
44: : LOOP sys? postpone (loop) loop] ; immediate restrict
45: : +LOOP sys? postpone (+loop) loop] ; immediate restrict
46: : NEXT sys? postpone (next) loop] ; immediate restrict
48: : EXIT postpone ;s ; immediate restrict
49: : ?EXIT postpone IF postpone EXIT postpone THEN ; immediate restrict