| \ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
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\ Copyright (C) 1995 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
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\ modify it under the terms of the GNU General Public License |
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\ as published by the Free Software Foundation; either version 2 |
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\ of the License, or (at your option) any later version. |
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\ This program is distributed in the hope that it will be useful, |
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\ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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\ GNU General Public License for more details. |
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|
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\ You should have received a copy of the GNU General Public License |
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\ along with this program; if not, write to the Free Software |
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\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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| \ May be cross-compiled |
\ May be cross-compiled |
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| decimal |
decimal |
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| \ .( 12may93jaw |
\ .( 12may93jaw |
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| : .( [char] ) parse type ; |
: .( ( compilation "...<paren>" -- ) \ core-ext dot-paren |
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[char] ) parse type ; immediate |
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| \ VALUE 2>R 2R> 2R@ 17may93jaw |
\ VALUE 2>R 2R> 2R@ 17may93jaw |
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| : value ( n -- ) (constant) , ; |
\ !! 2value |
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| : 2>r postpone >r postpone >r ; immediate restrict |
: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
| : 2r> postpone r> postpone r> ; immediate restrict |
swap postpone Literal postpone Literal ; immediate restrict |
| : 2r@ postpone 2r> postpone 2dup postpone 2>r ; immediate restrict |
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' drop alias d>s ( d -- n ) \ double d_to_s |
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: m*/ ( d1 n2 u3 -- dqout ) \ double m-star-slash |
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>r s>d >r abs -rot |
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s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um* |
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swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod nip swap |
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r> IF dnegate THEN ; |
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| \ CASE OF ENDOF ENDCASE 17may93jaw |
\ CASE OF ENDOF ENDCASE 17may93jaw |
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| \ just as described in dpANS5 |
\ just as described in dpANS5 |
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| 0 CONSTANT case immediate |
0 CONSTANT case ( compilation -- case-sys ; run-time -- ) \ core-ext |
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immediate |
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| : of |
: of ( compilation -- of-sys ; run-time x1 x2 -- |x1 ) \ core-ext |
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\ !! the implementation does not match the stack effect |
| 1+ >r |
1+ >r |
| postpone over postpone = postpone if postpone drop |
postpone over postpone = postpone if postpone drop |
| r> ; immediate |
r> ; immediate |
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| : endof |
: endof ( compilation case-sys1 of-sys -- case-sys2 ; run-time -- ) \ core-ext end-of |
| >r postpone else r> ; immediate |
>r postpone else r> ; immediate |
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| : endcase |
: endcase ( compilation case-sys -- ; run-time x -- ) \ core-ext end-case |
| postpone drop |
postpone drop |
| 0 ?do postpone then loop ; immediate |
0 ?do postpone then loop ; immediate |
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|
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| : (c") "lit ; |
: (c") "lit ; |
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| : CLiteral postpone (c") here over char+ allot place align ; |
: CLiteral |
| immediate restrict |
postpone (c") here over char+ allot place align ; immediate restrict |
| : C" [char] " parse postpone CLiteral ; immediate restrict |
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| \ UNUSED 17may93jaw |
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| : unused forthstart dup @ over 2 cells + @ - |
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| 512 - \ for stack |
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| + here - ; |
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| \ [COMPILE] 17may93jaw |
: C" ( compilation "...<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
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[char] " parse postpone CLiteral ; immediate restrict |
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| : [compile] |
\ [COMPILE] 17may93jaw |
| ' compile, ; immediate |
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| \ MARKER 17may93jaw |
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| \ : marker here last @ create , , DOES> dup @ last ! cell+ @ dp ! ; |
: [compile] ( compilation "name" -- ; run-time ? -- ? ) \ core-ext bracket-compile |
| \ doesn't work now. vocabularies? |
comp' drop compile, ; immediate |
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| \ CONVERT 17may93jaw |
\ CONVERT 17may93jaw |
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| : convert true >number drop ; |
: convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext |
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\G obsolescent; superseded by @code{>number}. |
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char+ true >number drop ; |
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| \ ERASE 17may93jaw |
\ ERASE 17may93jaw |
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| : erase 0 1 chars um/mod nip 0 fill ; |
: erase ( addr len -- ) \ core-ext |
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\ !! dependence on "1 chars 1 =" |
| \ ROLL 17may93jaw |
( 0 1 chars um/mod nip ) 0 fill ; |
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: blank ( addr len -- ) \ string |
| : roll dup 1+ pick >r |
bl fill ; |
| cells sp@ 2 cells + dup cell+ rot move drop r> ; |
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\ SEARCH 02sep94py |
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: search ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 flag ) \ string |
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\ not very efficient; but if we want efficiency, we'll do it as primitive |
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2>r 2dup |
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begin |
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dup r@ >= |
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while |
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over 2r@ swap -text 0= if |
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2swap 2drop 2r> 2drop true exit |
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endif |
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1 /string |
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repeat |
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2drop 2r> 2drop false ; |
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| \ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
\ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
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|
| : source-id ( -- 0 | -1 | fileid ) |
: source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d |
| loadfile @ dup 0= IF drop linestart @ THEN ; |
loadfile @ dup 0= IF drop sourceline# 0 min THEN ; |
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| : save-input ( -- x1 .. xn n ) |
: save-input ( -- x1 .. xn n ) \ core-ext |
| >in @ |
>in @ |
| loadfile @ ?dup |
loadfile @ |
| IF linestart 2@ loadline @ 6 |
if |
| ELSE loadline @ blk @ linestart @ 5 THEN |
loadfile @ file-position throw |
| >tib @ swap ; \ >tib for security |
else |
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blk @ |
| : restore-input ( x1 .. xn n -- flag ) |
linestart @ |
| 1- swap >tib @ <> IF discard true EXIT THEN |
then |
| 5 = IF loadline ! 2dup linestart 2! rot dup loadfile ! |
sourceline# |
| reposition-file IF drop true EXIT THEN |
>tib @ |
| refill 0= IF drop true EXIT THEN |
source-id |
| ELSE linestart ! blk ! |
6 ; |
| dup loadline @ <> IF 2drop true EXIT THEN |
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| loadline ! |
: restore-input ( x1 .. xn n -- flag ) \ core-ext |
| THEN |
6 <> -12 and throw |
| >in ! false ; |
source-id <> -12 and throw |
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>tib ! |
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>r ( line# ) |
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loadfile @ 0<> |
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if |
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loadfile @ reposition-file throw |
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else |
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linestart ! |
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blk ! |
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sourceline# r@ <> blk @ 0= and loadfile @ 0= and |
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if |
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drop rdrop true EXIT |
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then |
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then |
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r> loadline ! |
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>in ! |
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false ; |
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| \ This things we don't need, but for being complete... jaw |
\ This things we don't need, but for being complete... jaw |
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| \ EXPECT SPAN 17may93jaw |
\ EXPECT SPAN 17may93jaw |
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| variable span |
variable span ( -- a-addr ) \ core-ext |
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\ obsolescent |
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| : expect ( c-addr +len -- ) |
: expect ( c-addr +len -- ) \ core-ext |
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\ obsolescent; use accept |
| 0 rot over |
0 rot over |
| BEGIN key decode >r 2over = r> or UNTIL |
BEGIN ( maxlen span c-addr pos1 ) |
| 2drop nip span ! ; |
key decode ( maxlen span c-addr pos2 flag ) |
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>r 2over = r> or |
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UNTIL |
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2 pick swap /string type |
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nip span ! ; |
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\ marker 18dec94py |
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\ Marker creates a mark that is removed (including everything |
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\ defined afterwards) when executing the mark. |
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: marker, ( -- mark ) here dup A, |
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voclink @ A, voclink |
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BEGIN @ dup WHILE dup 0 wordlist-link - @ A, REPEAT drop |
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udp @ , ; |
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: marker! ( mark -- ) |
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dup @ swap cell+ |
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dup @ voclink ! cell+ |
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voclink |
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BEGIN |
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@ dup |
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WHILE |
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over @ over 0 wordlist-link - ! |
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swap cell+ swap |
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REPEAT |
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drop voclink |
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BEGIN |
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@ dup |
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WHILE |
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dup 0 wordlist-link - rehash |
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REPEAT |
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drop |
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@ udp ! dp ! |
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\ clean up vocabulary stack |
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0 vp @ 0 |
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?DO |
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vp cell+ I cells + @ dup here > |
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IF drop ELSE swap 1+ THEN |
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LOOP |
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dup 0= or set-order \ -1 set-order if order is empty |
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get-current here > IF |
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forth-wordlist set-current |
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THEN ; |
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: marker ( "mark" -- ) |
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marker, Create A, |
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DOES> ( -- ) |
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@ marker! ; |
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