version 1.43, 2000/09/10 19:50:33
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version 1.70, 2011/12/31 15:29:25
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\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
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\ Copyright (C) 1995,1998 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1998,2000,2003,2005,2007,2009,2010,2011 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
\ Gforth is free software; you can redistribute it and/or |
\ modify it under the terms of the GNU General Public License |
\ modify it under the terms of the GNU General Public License |
\ as published by the Free Software Foundation; either version 2 |
\ as published by the Free Software Foundation, either version 3 |
\ of the License, or (at your option) any later version. |
\ 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, |
\ This program is distributed in the hope that it will be useful, |
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\ GNU General Public License for more details. |
\ GNU General Public License for more details. |
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\ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
\ along with this program; if not, write to the Free Software |
\ along with this program. If not, see http://www.gnu.org/licenses/. |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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\ May be cross-compiled |
\ May be cross-compiled |
Line 25 decimal
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Line 24 decimal
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\ .( 12may93jaw |
\ .( 12may93jaw |
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: .( ( compilation,interpretation "ccc<paren>" -- ) \ core-ext dot-paren |
: .( ( compilation&interpretation "ccc<paren>" -- ) \ core-ext dot-paren |
\G Compilation and interpretation semantics: Parse a string @i{ccc} |
\G Compilation and interpretation semantics: Parse a string @i{ccc} |
\G delimited by a @code{)} (right parenthesis). Display the |
\G delimited by a @code{)} (right parenthesis). Display the |
\G string. This is often used to display progress information during |
\G string. This is often used to display progress information during |
Line 36 decimal
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Line 35 decimal
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\ !! 2value |
\ !! 2value |
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[ifundef] 2literal |
: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
\G Compile appropriate code such that, at run-time, cell pair @i{w1, w2} are |
\G Compile appropriate code such that, at run-time, cell pair @i{w1, w2} are |
\G placed on the stack. Interpretation semantics are undefined. |
\G placed on the stack. Interpretation semantics are undefined. |
swap postpone Literal postpone Literal ; immediate restrict |
swap postpone Literal postpone Literal ; immediate restrict |
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[then] |
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' drop alias d>s ( d -- n ) \ double d_to_s |
' drop alias d>s ( d -- n ) \ double d_to_s |
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Line 48 decimal
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Line 49 decimal
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\G In ANS Forth u3 can only be a positive signed number. |
\G In ANS Forth u3 can only be a positive signed number. |
>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* |
swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod nip swap |
swap >r 0 d+ r> -rot r@ um/mod -rot r> um/mod |
r> IF dnegate THEN ; |
[ 1 -3 mod 0< ] [if] |
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-rot r> IF IF 1. d+ THEN dnegate ELSE drop THEN |
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[else] |
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nip swap r> IF dnegate THEN |
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[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 ( compilation -- case-sys ; run-time -- ) \ core-ext |
[ifundef] cs-drop |
immediate |
: CS-DROP ( dest -- ) \ gforth |
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dest? 2drop ; |
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[then] |
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: case ( compilation -- case-sys ; run-time -- ) \ core-ext |
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postpone begin 0 ; immediate |
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: ?of ( compilation -- of-sys ; run-time f -- ) \ gforth |
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>r POSTPONE if r> ; immediate |
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: of ( compilation -- of-sys ; run-time x1 x2 -- |x1 ) \ core-ext |
: of ( compilation -- of-sys ; run-time x1 x2 -- |x1 ) \ core-ext |
\ !! the implementation does not match the stack effect |
\ !! the implementation does not match the stack effect |
1+ >r |
postpone over postpone = postpone ?of postpone drop ; immediate |
postpone over postpone = postpone if postpone drop |
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r> ; immediate |
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: endof ( compilation case-sys1 of-sys -- case-sys2 ; run-time -- ) \ core-ext end-of |
: endof ( compilation case-sys1 of-sys -- case-sys2 ; run-time -- ) \ core-ext end-of |
>r postpone else r> ; immediate |
>r postpone else 1 cs-roll r> 1+ ; immediate |
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: contof ( compilation case-sys1 of-sys -- case-sys2 ; run-time -- ) |
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\ like @code{endof}, but loops back to the @code{case} |
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>r 1 cs-pick postpone again postpone then r> ; immediate |
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: n-thens ( orig1 ... origu u -- ) |
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0 ?do postpone then loop ; |
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: endcase ( compilation case-sys -- ; run-time x -- ) \ core-ext end-case |
: endcase ( compilation case-sys -- ; run-time x -- ) \ core-ext end-case |
postpone drop |
>r cs-drop postpone drop r> n-thens ; immediate |
0 ?do postpone then loop ; immediate |
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\ C" 17may93jaw |
: nextcase ( compilation case-sys -- ; run-time x -- ) \ gforth-undocumented |
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\ like ENDCASE, but start again from the beginning if this is |
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\ reached by fallthrough |
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>r postpone drop postpone again r> n-thens ; immediate |
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: (c") "lit ; |
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: CLiteral |
\ C" 17may93jaw |
postpone (c") here over char+ allot place align ; immediate restrict |
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: C" ( compilation "ccc<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
: C" ( compilation "ccc<quote>" -- ; run-time -- c-addr ) \ core-ext c-quote |
\G Compilation: parse a string @i{ccc} delimited by a @code{"} |
\G Compilation: parse a string @i{ccc} delimited by a @code{"} |
Line 97 decimal
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Line 115 decimal
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\ CONVERT 17may93jaw |
\ CONVERT 17may93jaw |
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: convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext |
: convert ( ud1 c-addr1 -- ud2 c-addr2 ) \ core-ext-obsolescent |
\G OBSOLESCENT: superseded by @code{>number}. |
\G Obsolescent: superseded by @code{>number}. |
char+ true >number drop ; |
char+ true >number drop ; |
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\ ERASE 17may93jaw |
\ ERASE 17may93jaw |
Line 123 decimal
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Line 141 decimal
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begin |
begin |
dup r@ >= |
dup r@ >= |
while |
while |
over 2r@ swap -text 0= if |
2dup 2r@ string-prefix? if |
2swap 2drop 2r> 2drop true exit |
2swap 2drop 2r> 2drop true exit |
endif |
endif |
1 /string |
1 /string |
Line 132 decimal
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Line 150 decimal
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\ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
\ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
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[IFUNDEF] source-id |
: source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d |
: source-id ( -- 0 | -1 | fileid ) \ core-ext,file source-i-d |
\G Return 0 (the input source is the user input device), -1 (the |
\G Return 0 (the input source is the user input device), -1 (the |
\G input source is a string being processed by @code{evaluate}) or |
\G input source is a string being processed by @code{evaluate}) or |
Line 181 decimal
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Line 200 decimal
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r> loadline ! |
r> loadline ! |
>in ! |
>in ! |
false ; |
false ; |
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[THEN] |
\ 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 ( -- c-addr ) \ core-ext |
variable span ( -- c-addr ) \ core-ext-obsolescent |
\G @code{Variable} -- @i{c-addr} is the address of a cell that stores the |
\G @code{Variable} -- @i{c-addr} is the address of a cell that stores the |
\G length of the last string received by @code{expect}. OBSOLESCENT. |
\G length of the last string received by @code{expect}. OBSOLESCENT. |
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: expect ( c-addr +n -- ) \ core-ext |
: expect ( c-addr +n -- ) \ core-ext-obsolescent |
\G Receive a string of at most @i{+n} characters, and store it |
\G Receive a string of at most @i{+n} characters, and store it |
\G in memory starting at @i{c-addr}. The string is |
\G in memory starting at @i{c-addr}. The string is |
\G displayed. Input terminates when the <return> key is pressed or |
\G displayed. Input terminates when the <return> key is pressed or |
Line 198 variable span ( -- c-addr ) \ core-ext
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Line 217 variable span ( -- c-addr ) \ core-ext
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\G editing capabilites are available. The length of the string is |
\G editing capabilites are available. The length of the string is |
\G stored in @code{span}; it does not include the <return> |
\G stored in @code{span}; it does not include the <return> |
\G character. OBSOLESCENT: superceeded by @code{accept}. |
\G character. OBSOLESCENT: superceeded by @code{accept}. |
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everyline |
0 rot over |
0 rot over |
BEGIN ( maxlen span c-addr pos1 ) |
BEGIN ( maxlen span c-addr pos1 ) |
key decode ( maxlen span c-addr pos2 flag ) |
xkey decode ( maxlen span c-addr pos2 flag ) |
>r 2over = r> or |
>r 2over = r> or |
UNTIL |
UNTIL |
2 pick swap /string type |
2 pick swap /string type |
Line 212 variable span ( -- c-addr ) \ core-ext
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Line 232 variable span ( -- c-addr ) \ core-ext
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\ defined afterwards) when executing the mark. |
\ defined afterwards) when executing the mark. |
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: included-files-mark ( -- u ) |
: included-files-mark ( -- u ) |
included-files 2@ nip |
included-files @ ; |
blk @ 0= |
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if \ not input from blocks |
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source-id 1 -1 within |
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if \ input from file |
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1- \ do not include the last file (hopefully this is the |
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\ currently included file) |
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then |
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then ; |
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\ hmm, most of the saving appears to be pretty unnecessary: we could |
\ hmm, most of the saving appears to be pretty unnecessary: we could |
\ derive the wordlists and the words that have to be kept from the |
\ derive the wordlists and the words that have to be kept from the |
Line 240 variable span ( -- c-addr ) \ core-ext
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Line 252 variable span ( -- c-addr ) \ core-ext
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REPEAT |
REPEAT |
drop |
drop |
\ remember udp |
\ remember udp |
udp @ , ; |
udp @ , |
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\ remember dyncode-ptr |
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here ['] noop , compile-prim1 finish-code ; |
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: marker! ( mark -- ) |
: marker! ( mark -- ) |
\ reset included files count; resize will happen on next add-included-file |
\ reset included files count; resize will happen on next add-included-file |
included-files 2@ drop over @ included-files 2! cell+ |
included-files @ over @ min included-files ! cell+ |
\ rest of marker! |
\ rest of marker! |
dup @ swap cell+ ( here rest-of-marker ) |
dup @ swap cell+ ( here rest-of-marker ) |
dup @ voclink ! cell+ |
dup @ voclink ! cell+ |
Line 267 variable span ( -- c-addr ) \ core-ext
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Line 281 variable span ( -- c-addr ) \ core-ext
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REPEAT |
REPEAT |
drop |
drop |
\ restore udp and dp |
\ restore udp and dp |
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[IFDEF] forget-dyncode |
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dup cell+ @ forget-dyncode drop |
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[THEN] |
@ udp ! dp ! |
@ udp ! dp ! |
\ clean up vocabulary stack |
\ clean up vocabulary stack |
0 vp @ 0 |
0 vp @ 0 |