Diff for /gforth/extend.fs between versions 1.11 and 1.22

version 1.11, 1995/10/16 18:33:07 version 1.22, 1997/03/19 18:27:12
Line 1 Line 1
 \ EXTEND.FS    CORE-EXT Word not fully tested!         12may93jaw  \ EXTEND.FS    CORE-EXT Word not fully tested!         12may93jaw
   
   \ Copyright (C) 1995 Free Software Foundation, Inc.
   
   \ This file is part of Gforth.
   
   \ Gforth is free software; you can redistribute it and/or
   \ modify it under the terms of the GNU General Public License
   \ as published by the Free Software Foundation; either version 2
   \ of the License, or (at your option) any later version.
   
   \ This program is distributed in the hope that it will be useful,
   \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   \ GNU General Public License for more details.
   
   \ You should have received a copy of the GNU General Public License
   \ along with this program; if not, write to the Free Software
   \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   
   
 \ May be cross-compiled  \ May be cross-compiled
   
 decimal  decimal
Line 11  decimal Line 30  decimal
   
 \ VALUE 2>R 2R> 2R@                                     17may93jaw  \ VALUE 2>R 2R> 2R@                                     17may93jaw
   
 : value ( w -- ) \ core-ext  
   (constant) , ;  
 \ !! 2value  \ !! 2value
   
 : 2Literal ( compilation w1 w2 -- ; run-time  -- w1 w2 ) \ double two-literal  : 2Literal ( compilation w1 w2 -- ; run-time  -- w1 w2 ) \ double two-literal
     swap postpone Literal  postpone Literal ; immediate restrict      swap postpone Literal  postpone Literal ; immediate restrict
   
   ' drop alias d>s ( d -- n ) \ double            d_to_s
   
 : m*/ ( d1 n2 u3 -- dqout ) \ double m-star-slash  : m*/ ( d1 n2 u3 -- dqout ) \ double m-star-slash
     >r s>d >r abs -rot      >r s>d >r abs -rot
     s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um*      s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um*
Line 57  decimal Line 76  decimal
 \ UNUSED                                                17may93jaw  \ UNUSED                                                17may93jaw
   
 : unused ( -- u ) \ core-ext  : unused ( -- u ) \ core-ext
     s0 @ 512 -        \ for stack      forthstart dup 3 cells + @ + here - ;
     here - ;  
   
 \ [COMPILE]                                             17may93jaw  \ [COMPILE]                                             17may93jaw
   
Line 73  decimal Line 91  decimal
 \ CONVERT                                               17may93jaw  \ CONVERT                                               17may93jaw
   
 : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext  : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext
     \ obsolescent; supersedet by @code{>number}.      \ obsolescent; superseded by @code{>number}.
     true >number drop ;      true >number drop ;
   
 \ ERASE                                                 17may93jaw  \ ERASE                                                 17may93jaw
Line 101  decimal Line 119  decimal
     REPEAT      REPEAT
     2drop 2drop  rdrop false ;      2drop 2drop  rdrop false ;
   
 \ ROLL                                                  17may93jaw  
   
 : roll  ( x0 x1 .. xn n -- x1 .. xn x0 ) \ core-ext  
   dup 1+ pick >r  
   cells sp@ cell+ dup cell+ rot move drop r> ;  
   
 \ SOURCE-ID SAVE-INPUT RESTORE-INPUT                    11jun93jaw  \ SOURCE-ID SAVE-INPUT RESTORE-INPUT                    11jun93jaw
   
 : source-id ( -- 0 | -1 | fileid ) \ core-ext source-i-d  : source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d
   loadfile @ dup 0= IF  drop loadline @ 0 min  THEN ;    loadfile @ dup 0= IF  drop sourceline# 0 min  THEN ;
   
 : save-input ( -- x1 .. xn n ) \ core-ext  : save-input ( -- x1 .. xn n ) \ core-ext
   >in @      >in @
   loadfile @ ?dup      loadfile @
   IF    dup file-position throw loadline @ >tib @ 6      if
         #tib @ >tib +!          loadfile @ file-position throw
   ELSE  loadline @ blk @ linestart @ >tib @ 5 THEN      else
 ;          blk @
           linestart @
       then
       sourceline#
       >tib @
       source-id
       6 ;
   
 : restore-input ( x1 .. xn n -- flag ) \ core-ext  : restore-input ( x1 .. xn n -- flag ) \ core-ext
   swap >tib !      6 <> -12 and throw
   6 = IF   loadline ! rot dup loadfile !      source-id <> -12 and throw
            reposition-file IF drop true EXIT THEN      >tib !
       ELSE linestart ! blk !      >r ( line# )
            dup loadline @ <> IF 2drop true EXIT THEN      loadfile @ 0<>
            loadline !      if
       THEN          loadfile @ reposition-file throw
   >in ! false ;      else
           linestart !
           blk !
           sourceline# r@ <> blk @ 0= and loadfile @ 0= and
           if
               drop rdrop true EXIT
           then
       then
       r> loadline !
       >in !
       false ;
   
 \ This things we don't need, but for being complete... jaw  \ This things we don't need, but for being complete... jaw
   
Line 146  variable span ( -- a-addr ) \ core-ext Line 172  variable span ( -- a-addr ) \ core-ext
         key decode ( maxlen span c-addr pos2 flag )          key decode ( maxlen span c-addr pos2 flag )
         >r 2over = r> or          >r 2over = r> or
     UNTIL      UNTIL
     type-rest drop      2 pick swap /string type
     2drop nip span ! ;      nip span ! ;
   

Removed from v.1.11  
changed lines
  Added in v.1.22


FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>