version 1.48, 2002/12/13 15:49:53
|
version 1.68, 2011/08/10 13:55:02
|
Line 1
|
Line 1
|
\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
|
|
\ Copyright (C) 1995,1998,2000 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1998,2000,2003,2005,2007,2009,2010 Free Software Foundation, Inc. |
|
|
\ This file is part of Gforth. |
\ This file is part of Gforth. |
|
|
\ 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. |
|
|
\ This program is distributed in the hope that it will be useful, |
\ This program is distributed in the hope that it will be useful, |
Line 15
|
Line 15
|
\ GNU General Public License for more details. |
\ GNU General Public License for more details. |
|
|
\ 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
|
|
|
|
|
\ May be cross-compiled |
\ May be cross-compiled |
Line 25 decimal
|
Line 24 decimal
|
|
|
\ .( 12may93jaw |
\ .( 12may93jaw |
|
|
: .( ( 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
|
Line 35 decimal
|
|
|
\ !! 2value |
\ !! 2value |
|
|
|
[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 |
|
[then] |
|
|
' drop alias d>s ( d -- n ) \ double d_to_s |
' drop alias d>s ( d -- n ) \ double d_to_s |
|
|
Line 48 decimal
|
Line 49 decimal
|
\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] |
|
-rot r> IF IF 1. d+ THEN dnegate ELSE drop THEN |
|
[else] |
|
nip swap r> IF dnegate THEN |
|
[then] ; |
|
|
\ CASE OF ENDOF ENDCASE 17may93jaw |
\ CASE OF ENDOF ENDCASE 17may93jaw |
|
|
Line 58 decimal
|
Line 63 decimal
|
0 CONSTANT case ( compilation -- case-sys ; run-time -- ) \ core-ext |
0 CONSTANT case ( compilation -- case-sys ; run-time -- ) \ core-ext |
immediate |
immediate |
|
|
|
: ?of ( compilation -- of-sys ; run-time f -- ) \ gforth |
|
1+ >r POSTPONE if r> ; immediate |
|
|
: 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 |
|
r> ; immediate |
|
|
|
: 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 r> ; immediate |
Line 92 decimal
|
Line 98 decimal
|
|
|
\ CONVERT 17may93jaw |
\ CONVERT 17may93jaw |
|
|
: 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 ; |
|
|
\ ERASE 17may93jaw |
\ ERASE 17may93jaw |
Line 118 decimal
|
Line 124 decimal
|
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 182 decimal
|
Line 188 decimal
|
|
|
\ EXPECT SPAN 17may93jaw |
\ EXPECT SPAN 17may93jaw |
|
|
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. |
|
|
: 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 194 variable span ( -- c-addr ) \ core-ext
|
Line 200 variable span ( -- c-addr ) \ core-ext
|
\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}. |
|
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 208 variable span ( -- c-addr ) \ core-ext
|
Line 215 variable span ( -- c-addr ) \ core-ext
|
\ defined afterwards) when executing the mark. |
\ defined afterwards) when executing the mark. |
|
|
: included-files-mark ( -- u ) |
: included-files-mark ( -- u ) |
included-files 2@ nip |
included-files @ ; |
blk @ 0= |
|
if \ not input from blocks |
|
source-id 1 -1 within |
|
if \ input from file |
|
1- \ do not include the last file (hopefully this is the |
|
\ currently included file) |
|
then |
|
then ; |
|
|
|
\ 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 242 variable span ( -- c-addr ) \ core-ext
|
Line 241 variable span ( -- c-addr ) \ core-ext
|
|
|
: 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 265 variable span ( -- c-addr ) \ core-ext
|
Line 264 variable span ( -- c-addr ) \ core-ext
|
REPEAT |
REPEAT |
drop |
drop |
\ restore udp and dp |
\ restore udp and dp |
dup cell+ @ forget-dyncode 0= abort" gforth bug" |
[IFDEF] forget-dyncode |
|
dup cell+ @ forget-dyncode drop |
|
[THEN] |
@ udp ! dp ! |
@ udp ! dp ! |
\ clean up vocabulary stack |
\ clean up vocabulary stack |
0 vp @ 0 |
0 vp @ 0 |