\ 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 decimal \ .( 12may93jaw : .( ( compilation "..." -- ) \ core-ext dot-paren [char] ) parse type ; immediate \ VALUE 2>R 2R> 2R@ 17may93jaw : value ( w -- ) \ core-ext (constant) , ; \ !! 2value : 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal 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 >r s>d >r abs -rot s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um* swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod nip swap r> IF dnegate THEN ; \ CASE OF ENDOF ENDCASE 17may93jaw \ just as described in dpANS5 0 CONSTANT case ( compilation -- case-sys ; run-time -- ) \ core-ext immediate : of ( compilation -- of-sys ; run-time x1 x2 -- |x1 ) \ core-ext \ !! the implementation does not match the stack effect 1+ >r postpone over postpone = postpone if postpone drop r> ; immediate : endof ( compilation case-sys1 of-sys -- case-sys2 ; run-time -- ) \ core-ext end-of >r postpone else r> ; immediate : endcase ( compilation case-sys -- ; run-time x -- ) \ core-ext end-case postpone drop 0 ?do postpone then loop ; immediate \ C" 17may93jaw : (c") "lit ; : CLiteral postpone (c") here over char+ allot place align ; immediate restrict : C" ( compilation "..." -- ; run-time -- c-addr ) \ core-ext c-quote [char] " parse postpone CLiteral ; immediate restrict \ UNUSED 17may93jaw : unused ( -- u ) \ core-ext s0 @ 512 - \ for stack here - ; \ [COMPILE] 17may93jaw : [compile] ( compilation "name" -- ; run-time ? -- ? ) \ core-ext bracket-compile ' compile, ; immediate \ MARKER 17may93jaw \ : marker here last @ create , , DOES> dup @ last ! cell+ @ dp ! ; \ doesn't work now. vocabularies? \ CONVERT 17may93jaw : convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext \ obsolescent; supersedet by @code{>number}. true >number drop ; \ ERASE 17may93jaw : erase ( addr len -- ) \ core-ext \ !! dependence on "1 chars 1 =" ( 0 1 chars um/mod nip ) 0 fill ; : blank ( addr len -- ) \ string bl fill ; \ SEARCH 02sep94py : search ( buf buflen text textlen -- restbuf restlen flag ) \ string 2over 2 pick - 1+ 3 pick c@ >r BEGIN r@ scan dup WHILE >r >r 2dup r@ -text 0= IF >r drop 2drop r> r> r> rot + 1- rdrop true EXIT THEN r> r> 1 /string REPEAT 2drop 2drop rdrop false ; \ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw : source-id ( -- 0 | -1 | fileid ) \ core-ext source-i-d loadfile @ dup 0= IF drop sourceline# 0 min THEN ; : save-input ( -- x1 .. xn n ) \ core-ext >in @ loadfile @ if loadfile @ file-position throw else blk @ linestart @ then sourceline# >tib @ source-id 6 ; : restore-input ( x1 .. xn n -- flag ) \ core-ext 6 <> -12 and throw source-id <> -12 and throw >tib ! >r ( line# ) loadfile @ 0<> if loadfile @ reposition-file throw else linestart ! blk ! sourceline# r@ <> blk @ 0= and loadfile @ 0= and if drop rdrop true EXIT then then r> loadline ! >in ! false ; \ : save-input ( -- x1 .. xn n ) \ core-ext \ >in @ \ loadfile @ ?dup \ IF dup file-position throw sourceline# >tib @ 6 \ #tib @ >tib +! \ ELSE sourceline# blk @ linestart @ >tib @ 5 THEN \ ; \ : restore-input ( x1 .. xn n -- flag ) \ core-ext \ swap >tib ! \ 6 = IF loadline ! rot dup loadfile ! \ reposition-file IF drop true EXIT THEN \ ELSE linestart ! blk ! \ dup sourceline# <> IF 2drop true EXIT THEN \ loadline ! \ THEN \ >in ! false ; \ This things we don't need, but for being complete... jaw \ EXPECT SPAN 17may93jaw variable span ( -- a-addr ) \ core-ext \ obsolescent : expect ( c-addr +len -- ) \ core-ext \ obsolescent; use accept 0 rot over BEGIN ( maxlen span c-addr pos1 ) key decode ( maxlen span c-addr pos2 flag ) >r 2over = r> or UNTIL 2 pick swap /string type nip span ! ;