Annotation of gforth/kernel/cloop.fs, revision 1.9
1.1 jwilke 1: \ Structural Conditionals, loops part 12dec92py
2:
1.9 ! anton 3: \ Copyright (C) 1995,1996,1997,1999,2001,2003,2006 Free Software Foundation, Inc.
1.1 jwilke 4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
1.3 anton 19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1 jwilke 20:
21: \ Structural Conditionals 12dec92py
22:
1.8 pazsan 23: \ this works with flash
1.1 jwilke 24:
1.8 pazsan 25: : (leave) -1 , ;
1.4 jwilke 26: : LEAVE postpone branch (leave) ; immediate restrict
27: : ?LEAVE postpone 0= postpone ?branch (leave) ;
1.1 jwilke 28: immediate restrict
29:
1.8 pazsan 30: : DONE ( addr -- ) here swap ?DO
31: I @ ['] branch = I @ ['] ?branch = or I @ ['] (?do) = or
32: I cell+ @ -1 = and IF I cell+ >resolve THEN
33: cell +LOOP ; immediate restrict
1.1 jwilke 34:
35: \ Structural Conditionals 12dec92py
36:
1.4 jwilke 37: : DO postpone (do) here ; immediate restrict
1.1 jwilke 38:
1.4 jwilke 39: : ?DO postpone (?do) (leave) here ;
1.1 jwilke 40: immediate restrict
1.4 jwilke 41: : FOR postpone (for) here ; immediate restrict
1.1 jwilke 42:
1.4 jwilke 43: : loop] dup <resolve 2 cells - postpone done postpone unloop ;
1.1 jwilke 44:
1.4 jwilke 45: : LOOP sys? postpone (loop) loop] ; immediate restrict
46: : +LOOP sys? postpone (+loop) loop] ; immediate restrict
47: : NEXT sys? postpone (next) loop] ; immediate restrict
1.1 jwilke 48:
1.4 jwilke 49: : EXIT postpone ;s ; immediate restrict
1.1 jwilke 50: : ?EXIT postpone IF postpone EXIT postpone THEN ; immediate restrict
51:
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