Annotation of gforth/kernel-ec/cloop.fs, revision 1.1

1.1     ! pazsan      1: \ Structural Conditionals, loops part                  12dec92py
        !             2: 
        !             3: \ Copyright (C) 1995,1996,1997,1999,2001,2003,2006,2007 Free Software Foundation, Inc.
        !             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 3
        !            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, see http://www.gnu.org/licenses/.
        !            19: 
        !            20: \ Structural Conditionals                              12dec92py
        !            21: 
        !            22: \ this works with flash
        !            23: 
        !            24: : (leave)   -1 , ;
        !            25: : LEAVE     postpone branch  (leave) ;  immediate restrict
        !            26: : ?LEAVE    postpone 0= postpone ?branch  (leave) ;
        !            27:                                              immediate restrict
        !            28: 
        !            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
        !            33: 
        !            34: \ Structural Conditionals                              12dec92py
        !            35: 
        !            36: : DO        postpone (do)   here ;            immediate restrict
        !            37: 
        !            38: : ?DO       postpone (?do)  (leave) here ;
        !            39:                                              immediate restrict
        !            40: : FOR       postpone (for)  here ;            immediate restrict
        !            41: 
        !            42: : loop]     dup <resolve 2 cells - postpone done postpone unloop ;
        !            43: 
        !            44: : LOOP      sys? postpone (loop)  loop] ;     immediate restrict
        !            45: : +LOOP     sys? postpone (+loop) loop] ;     immediate restrict
        !            46: : NEXT      sys? postpone (next)  loop] ;     immediate restrict
        !            47: 
        !            48: : EXIT postpone ;s ; immediate restrict
        !            49: : ?EXIT postpone IF postpone EXIT postpone THEN ; immediate restrict
        !            50: 

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