version 1.37, 2000/02/04 14:52:30
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version 1.59, 2007/03/08 13:55:49
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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 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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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, write to the Free Software |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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\ May be cross-compiled |
\ May be cross-compiled |
Line 25 decimal
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Line 25 decimal
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\ .( 12may93jaw |
\ .( 12may93jaw |
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: .( ( "ccc<paren>" -- ) \ core-ext dot-paren |
: .( ( compilation&interpretation "ccc<paren>" -- ) \ core-ext dot-paren |
\G Parse a string @i{ccc} delimited by a @code{)} (right |
\G Compilation and interpretation semantics: Parse a string @i{ccc} |
\G parenthesis). Display the string. This is often used to display |
\G delimited by a @code{)} (right parenthesis). Display the |
\G progress information during compilation; see examples below. |
\G string. This is often used to display progress information during |
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\G compilation; see examples below. |
[char] ) parse type ; immediate |
[char] ) parse type ; immediate |
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\ VALUE 2>R 2R> 2R@ 17may93jaw |
\ VALUE 2>R 2R> 2R@ 17may93jaw |
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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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: m*/ ( d1 n2 u3 -- dqout ) \ double m-star-slash |
: m*/ ( d1 n2 u3 -- dquot ) \ double m-star-slash |
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\G dquot=(d1*n2)/u3, with the intermediate result being triple-precision. |
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\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 ; |
[ s" floored" environment? 0= throw ] [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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Line 70 decimal
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Line 79 decimal
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\ C" 17may93jaw |
\ C" 17may93jaw |
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: (c") "lit ; |
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: CLiteral |
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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{"} |
\G (double quote). At run-time, return @i{c-addr} which |
\G (double quote). At run-time, return @i{c-addr} which |
Line 100 decimal
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Line 104 decimal
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\ ERASE 17may93jaw |
\ ERASE 17may93jaw |
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: erase ( addr len -- ) \ core-ext |
: erase ( addr u -- ) \ core-ext |
\G If @i{len}>0, clear all bits in each location of a memory region |
\G Clear all bits in @i{u} aus starting at @i{addr}. |
\G of @i{len} address units starting at address @i{addr}. |
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\ !! dependence on "1 chars 1 =" |
\ !! dependence on "1 chars 1 =" |
( 0 1 chars um/mod nip ) 0 fill ; |
( 0 1 chars um/mod nip ) 0 fill ; |
: blank ( c-addr u -- ) \ string |
: blank ( c-addr u -- ) \ string |
\G If @i{u}>0, store the character value for a space in each |
\G Store the space character into @i{u} chars starting at @i{c-addr}. |
\G location of a memory region |
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\G of @i{u} character units starting at address @i{c-addr}. |
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bl fill ; |
bl fill ; |
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\ SEARCH 02sep94py |
\ SEARCH 02sep94py |
Line 123 decimal
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Line 124 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 133 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 147 decimal
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Line 149 decimal
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loadfile @ |
loadfile @ |
if |
if |
loadfile @ file-position throw |
loadfile @ file-position throw |
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[IFDEF] #fill-bytes #fill-bytes @ [ELSE] #tib @ 1+ [THEN] 0 d- |
else |
else |
blk @ |
blk @ |
linestart @ |
linestart @ |
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Line 171 decimal
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loadfile @ 0<> |
loadfile @ 0<> |
if |
if |
loadfile @ reposition-file throw |
loadfile @ reposition-file throw |
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refill 0= -36 and throw \ should never throw |
else |
else |
linestart ! |
linestart ! |
blk ! |
blk ! |
Line 179 decimal
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Line 183 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 |
Line 238 variable span ( -- c-addr ) \ core-ext
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Line 242 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 |
Line 265 variable span ( -- c-addr ) \ core-ext
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Line 271 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 |