File:  [gforth] / gforth / parsedto.fs
Revision 1.1: download - view: text, annotated - select for diffs
Wed Jun 27 21:26:51 2012 UTC (7 years, 1 month ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Added parsed to

    1: \ -> (to/is replacement) recognizer
    2: 
    3: \ Copyright (C) 2012 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: ' (int-to) ' (comp-to) ' lit, recognizer: r:to
   21: 
   22: : to-recognizer ( addr u -- xt r:to | addr u r:fail )
   23:     2dup s" ->" string-prefix?  0= IF  r:fail  EXIT  THEN
   24:     2dup 2 /string dup 0= IF  2drop r:fail  EXIT  THEN
   25:     find-name dup 0= IF  drop r:fail  EXIT  THEN
   26:     name>comp drop nip nip r:to ;
   27: 
   28: ' to-recognizer
   29: forth-recognizer get-recognizers
   30: 1+ forth-recognizer set-recognizers

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