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Annotation of gforth/kernel/cloop.fs, revision 1.8

1.1       jwilke      1: \ Structural Conditionals, loops part                  12dec92py
                      2: 
1.6       anton       3: \ Copyright (C) 1995,1996,1997,1999,2001,2003 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: