version 1.28, 2003/01/25 20:11:30
|
version 1.72, 2012/02/09 18:23:29
|
Line 1
|
Line 1
|
\ miscelleneous words |
\ miscelleneous words |
|
|
\ Copyright (C) 1996,1997,1998,2000 Free Software Foundation, Inc. |
\ Copyright (C) 1996,1997,1998,2000,2003,2004,2005,2006,2007,2008,2009,2010,2011 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. |
|
|
: save-mem-dict ( addr1 u -- addr2 u ) |
|
here swap dup allot ( addr1 addr2 u ) |
|
2dup 2>r move 2r> ; |
|
|
|
' usable-dictionary-end @ dodefer: = [if] |
|
require glocals.fs |
|
[else] |
|
require glocals-1.60.fs |
|
[then] |
|
|
require glocals.fs |
|
|
|
' require alias needs ( ... "name" -- ... ) \ gforth |
' require alias needs ( ... "name" -- ... ) \ gforth |
\G An alias for @code{require}; exists on other systems (e.g., Win32Forth). |
\G An alias for @code{require}; exists on other systems (e.g., Win32Forth). |
Line 51 AUser CSP
|
Line 59 AUser CSP
|
\G @code{system} command. |
\G @code{system} command. |
|
|
: system ( c-addr u -- ) \ gforth |
: system ( c-addr u -- ) \ gforth |
\G Pass the string specified by @var{c-addr u} to the host operating system |
\G Pass the string specified by @var{c-addr u} to the host operating |
\G for execution in a sub-shell. |
\G system for execution in a sub-shell. The value of the environment |
|
\G variable @code{GFORTHSYSTEMPREFIX} (or its default value) is |
|
\G prepended to the string (mainly to support using @code{command.com} |
|
\G as shell in Windows instead of whatever shell Cygwin uses by |
|
\G default; @pxref{Environment variables}). |
(system) throw TO $? ; |
(system) throw TO $? ; |
|
|
: sh ( "..." -- ) \ gforth |
: sh ( "..." -- ) \ gforth |
Line 98 AUser CSP
|
Line 110 AUser CSP
|
ur compile-fliterals uw compile-literals |
ur compile-fliterals uw compile-literals |
target compile, POSTPONE exit reveal ; |
target compile, POSTPONE exit reveal ; |
|
|
: const-does> ( run-time: w*uw r*ur uw ur "name" -- ) |
: const-does> ( run-time: w*uw r*ur uw ur "name" -- ) \ gforth |
\G Defines @var{name} and returns.@sp 0 |
\G Defines @var{name} and returns. |
|
\G |
\G @var{name} execution: pushes @var{w*uw r*ur}, then performs the |
\G @var{name} execution: pushes @var{w*uw r*ur}, then performs the |
\G code following the @code{const-does>}. |
\G code following the @code{const-does>}. |
here >r 0 POSTPONE literal |
here >r 0 POSTPONE literal |
POSTPONE (const-does>) |
POSTPONE (const-does>) |
POSTPONE ; |
POSTPONE ; |
noname : POSTPONE rdrop |
noname : POSTPONE rdrop |
lastxt r> cell+ ! \ patch the literal |
latestxt r> cell+ ! \ patch the literal |
; immediate |
; immediate |
|
|
\ !! rewrite slurp-file using slurp-fid |
\ !! rewrite slurp-file using slurp-fid |
: slurp-file ( c-addr1 u1 -- c-addr2 u2 ) |
: slurp-file ( c-addr1 u1 -- c-addr2 u2 ) \ gforth |
\G @var{c-addr1 u1} is the filename, @var{c-addr2 u2} is the file's contents |
\G @var{c-addr1 u1} is the filename, @var{c-addr2 u2} is the file's contents |
r/o bin open-file throw >r |
r/o bin open-file throw >r |
r@ file-size throw abort" file too large" |
r@ file-size throw abort" file too large" |
Line 118 AUser CSP
|
Line 131 AUser CSP
|
2dup r@ read-file throw over <> abort" could not read whole file" |
2dup r@ read-file throw over <> abort" could not read whole file" |
r> close-file throw ; |
r> close-file throw ; |
|
|
: slurp-fid { fid -- addr u } |
: slurp-fid ( fid -- addr u ) \ gforth |
\G @var{addr u} is the content of the file @var{fid} |
\G @var{addr u} is the content of the file @var{fid} |
|
{ fid } |
0 0 begin ( awhole uwhole ) |
0 0 begin ( awhole uwhole ) |
dup 1024 + dup >r extend-mem ( anew awhole uwhole R: unew ) |
dup 1024 + dup >r extend-mem ( anew awhole uwhole R: unew ) |
rot r@ fid read-file throw ( awhole uwhole uread R: unew ) |
rot r@ fid read-file throw ( awhole uwhole uread R: unew ) |
Line 131 AUser CSP
|
Line 145 AUser CSP
|
|
|
\ ]] ... [[ |
\ ]] ... [[ |
|
|
: compile-literal ( n -- ) |
: [[ ( -- ) \ gforth left-bracket-bracket |
postpone literal ; |
|
|
|
: [[ ( -- ) |
|
\G switch from postpone state to compile state |
\G switch from postpone state to compile state |
\ this is only a marker; it is never really interpreted |
\ this is only a marker; it is never really interpreted |
compile-only-error ; immediate |
compile-only-error ; immediate |
|
|
: postponer ( c-addr u -- ) |
[ifdef] compiler1 |
2dup find-name dup if ( c-addr u nt ) |
: compile-literal ( n -- ) |
|
postpone literal ; |
|
|
|
: compile-compile-literal ( n -- ) |
|
compile-literal postpone compile-literal ; |
|
|
|
: compile-2literal ( n1 n2 -- ) |
|
postpone 2literal ; |
|
|
|
: compile-compile-2literal ( n1 n2 -- ) |
|
compile-2literal postpone compile-2literal ; |
|
|
|
: postponer1 ( c-addr u -- ... xt ) |
|
2dup find-name |
|
[ifdef] run-prelude run-prelude [then] |
|
dup if ( c-addr u nt ) |
nip nip name>comp |
nip nip name>comp |
2dup [comp'] [[ d= if |
2dup [comp'] [[ d= if |
2drop ['] compiler is parser |
2drop ['] compiler1 is parser1 ['] noop |
else |
else |
postpone, |
['] postpone, |
endif |
endif |
else |
else |
drop |
drop |
2dup snumber? dup if |
2dup 2>r snumber? dup if |
0> IF |
0> IF |
swap postpone literal postpone compile-literal |
['] compile-compile-2literal |
|
ELSE |
|
['] compile-compile-literal |
THEN |
THEN |
postpone Literal postpone compile-literal |
2rdrop |
2drop |
|
ELSE |
ELSE |
drop no.extensions |
drop 2r> no.extensions |
THEN |
THEN |
then ; |
then ; |
|
|
: ]] ( -- ) |
: ]] ( -- ) \ gforth right-bracket-bracket |
\ switch into postpone state |
\G switch into postpone state |
['] postponer is parser state on ; immediate restrict |
['] postponer1 is parser1 state on ; immediate restrict |
|
[then] |
|
|
|
[ifdef] compiler-r |
|
: postponer-r ( addr u -- ... xt ) |
|
forth-recognizer do-recognizer |
|
over [ s" [[" find-name ] Literal = |
|
IF 2drop [comp'] ] drop ELSE ['] >postpone THEN ; |
|
|
|
: ]] ( -- ) \ gforth right-bracket-bracket |
|
\G switch into postpone state |
|
['] postponer-r is parser1 state on ; immediate restrict |
|
[then] |
|
|
|
comp' literal drop alias postpone-literal |
|
comp' 2literal drop alias postpone-2literal |
|
comp' fliteral drop alias postpone-fliteral |
|
comp' sliteral drop alias postpone-sliteral |
|
|
|
: ]]L ( postponing: x -- ; compiling: -- x ) \ gforth right-bracket-bracket-l |
|
\G Shortcut for @code{]] literal}. |
|
]] postpone-literal ]] [[ ; immediate |
|
|
|
: ]]2L ( postponing: x1 x2 -- ; compiling: -- x1 x2 ) \ gforth right-bracket-bracket-two-l |
|
\G Shortcut for @code{]] 2literal}. |
|
]] postpone-2literal ]] [[ ; immediate |
|
|
|
: ]]FL ( postponing: r -- ; compiling: -- r ) \ gforth right-bracket-bracket-f-l |
|
\G Shortcut for @code{]] fliteral}. |
|
]] postpone-fliteral ]] [[ ; immediate |
|
|
|
: ]]SL ( postponing: addr1 u -- ; compiling: -- addr2 u ) \ gforth right-bracket-bracket-s-l |
|
\G Shortcut for @code{]] sliteral}; if the string already has been |
|
\G allocated permanently, you can use @code{]]2L} instead. |
|
]] postpone-sliteral ]] [[ ; immediate |
|
|
\ f.rdp |
\ f.rdp |
|
|
Line 181 AUser CSP
|
Line 242 AUser CSP
|
ur nd - 1- dup { beforep } fsign + nexp 0 max >= and if |
ur nd - 1- dup { beforep } fsign + nexp 0 max >= and if |
\ fixed-point notation |
\ fixed-point notation |
c-addr ur beforep nexp - dup { befored } '0 push-right |
c-addr ur beforep nexp - dup { befored } '0 push-right |
|
befored 1+ ur >= if \ <=1 digit left, will be pushed out by '.' |
|
rf fabs f2* 0.1e nd s>d d>f f** f> if \ round last digit |
|
'1 c-addr befored + 1- c! |
|
endif |
|
endif |
c-addr beforep 1- befored min dup { beforez } 0 max bl fill |
c-addr beforep 1- befored min dup { beforez } 0 max bl fill |
fsign if |
fsign if |
'- c-addr beforez 1- 0 max + c! |
'- c-addr beforez 1- 0 max + c! |
Line 210 AUser CSP
|
Line 276 AUser CSP
|
endif |
endif |
1 max ur min ; |
1 max ur min ; |
|
|
: f>buf-rdp ( rf c-addr +nr nd np -- ) \ gforth |
: f>buf-rdp ( rf c-addr +nr +nd +np -- ) \ gforth |
\G Convert @i{rf} into a string at @i{c-addr nr}. The conversion |
\G Convert @i{rf} into a string at @i{c-addr nr}. The conversion |
\G rules and the meanings of @i{nr nd np} are the same as for |
\G rules and the meanings of @i{nr nd np} are the same as for |
\G @code{f.rdp}. |
\G @code{f.rdp}. |
Line 236 AUser CSP
|
Line 302 AUser CSP
|
|
|
: f.rdp ( rf +nr +nd +np -- ) \ gforth |
: f.rdp ( rf +nr +nd +np -- ) \ gforth |
\G Print float @i{rf} formatted. The total width of the output is |
\G Print float @i{rf} formatted. The total width of the output is |
\G @i{nr}, the number of digits after the decimal point is @i{+nd}, |
\G @i{nr}. For fixed-point notation, the number of digits after the |
\G the minimum number of significant digits for fixed-point notation |
\G decimal point is @i{+nd} and the minimum number of significant |
\G is @i{np}. @code{Set-precision} has no effect on @code{f.rdp}. |
\G digits is @i{np}. @code{Set-precision} has no effect on |
\G Fixed-point notation is used if the number of siginicant digits |
\G @code{f.rdp}. Fixed-point notation is used if the number of |
\G would be larger than @i{np} and if the number of digits before the |
\G siginicant digits would be at least @i{np} and if the number of |
\G decimal point would fit. If fixed-point notation is not used, |
\G digits before the decimal point would fit. If fixed-point notation |
\G exponential notation is used, and if that does not fit, asterisks |
\G is not used, exponential notation is used, and if that does not |
\G are printed. We recommend using @i{nr}>=7 to avoid the risk of |
\G fit, asterisks are printed. We recommend using @i{nr}>=7 to avoid |
\G numbers not fitting at all. We recommend @i{nr}>=@i{np}+5 to avoid |
\G the risk of numbers not fitting at all. We recommend |
\G cases where @code{f.rdp} switches to exponential notation because |
\G @i{nr}>=@i{np}+5 to avoid cases where @code{f.rdp} switches to |
\G fixed-point notation would have too few significant digits, yet |
\G exponential notation because fixed-point notation would have too |
\G exponential notation offers fewer significant digits. We recomment |
\G few significant digits, yet exponential notation offers fewer |
\G @i{nr}>=@i{nd}+2, if you want to have fixed-point notation for some |
\G significant digits. We recommend @i{nr}>=@i{nd}+2, if you want to |
|
\G have fixed-point notation for some numbers. We recommend |
|
\G @i{np}>@i{nr}, if you want to have exponential notation for all |
\G numbers. |
\G numbers. |
f>str-rdp type ; |
f>str-rdp type ; |
|
|
Line 273 AUser CSP
|
Line 341 AUser CSP
|
10e f* |
10e f* |
loop ; |
loop ; |
[then] |
[then] |
|
|
|
: f.s ( -- ) \ gforth f-dot-s |
|
\G Display the number of items on the floating-point stack, followed |
|
\G by a list of the items (but not more than specified by |
|
\G @code{maxdepth-.s}; TOS is the right-most item. |
|
." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 |
|
?DO dup i - 1- floats fp@ + f@ 16 5 11 f.rdp space LOOP drop ; |
|
|
|
\ defer stuff |
|
|
|
[ifundef] defer@ : defer@ >body @ ; [then] |
|
|
|
:noname ' defer@ ; |
|
:noname postpone ['] postpone defer@ ; |
|
interpret/compile: action-of ( interpretation "name" -- xt; compilation "name" -- ; run-time -- xt ) \ gforth |
|
\G @i{Xt} is the XT that is currently assigned to @i{name}. |
|
|
|
' action-of |
|
comp' action-of drop |
|
interpret/compile: what's ( interpretation "name" -- xt; compilation "name" -- ; run-time -- xt ) \ gforth-obsolete |
|
\G Old name of @code{action-of} |
|
|
|
|
|
: typewhite ( addr n -- ) \ gforth |
|
\G Like type, but white space is printed instead of the characters. |
|
\ bounds u+do |
|
0 max bounds ?do |
|
i c@ #tab = if \ check for tab |
|
#tab |
|
else |
|
bl |
|
then |
|
emit |
|
loop ; |
|
|
|
\ w and l stuff |
|
|
|
environment-wordlist >order |
|
|
|
16 address-unit-bits / 1 max constant /w ( -- u ) \ gforth slash-w |
|
\G address units for a 16-bit value |
|
|
|
32 address-unit-bits / 1 max constant /l ( -- u ) \ gforth slash-l |
|
\G address units for a 32-bit value |
|
|
|
previous |
|
|
|
[ifdef] uw@ |
|
\ Open firmware names |
|
' uw@ alias w@ ( addr -- u ) |
|
' ul@ alias l@ ( addr -- u ) |
|
\ ' sw@ alias <w@ ( addr -- n ) |
|
[then] |
|
|
|
\ safe output redirection |
|
|
|
: outfile-execute ( ... xt file-id -- ... ) \ gforth |
|
\G execute @i{xt} with the output of @code{type} etc. redirected to |
|
\G @i{file-id}. |
|
outfile-id { oldfid } try |
|
to outfile-id execute 0 |
|
restore |
|
oldfid to outfile-id |
|
endtry |
|
throw ; |
|
|
|
: infile-execute ( ... xt file-id -- ... ) \ gforth |
|
\G execute @i{xt} with the input of @code{key} etc. redirected to |
|
\G @i{file-id}. |
|
infile-id { oldfid } try |
|
to infile-id execute 0 |
|
restore |
|
oldfid to infile-id |
|
endtry |
|
throw ; |
|
|
|
\ safe BASE wrapper |
|
|
|
: base-execute ( i*x xt u -- j*x ) \ gforth |
|
\G execute @i{xt} with the content of @code{BASE} being @i{u}, and |
|
\G restoring the original @code{BASE} afterwards. |
|
base @ { oldbase } \ use local, because TRY blocks the return stack |
|
try |
|
base ! execute 0 |
|
restore |
|
oldbase base ! |
|
endtry |
|
throw ; |
|
|
|
\ th |
|
|
|
: th ( addr1 u -- addr2 ) |
|
cells + ; |
|
|
|
\ \\\ - skip to end of file |
|
|
|
: \\\ ( -- ) \ gforth |
|
\G skip remaining source file |
|
source-id dup 0> IF |
|
>r r@ file-size throw r> reposition-file throw |
|
BEGIN refill 0= UNTIL postpone \ THEN ; immediate |
|
|
|
\ WORD SWORD |
|
|
|
: sword ( char -- addr len ) \ gforth-obsolete s-word |
|
\G Parses like @code{word}, but the output is like @code{parse} output. |
|
\G @xref{core-idef}. |
|
\ this word was called PARSE-WORD until 0.3.0, but Open Firmware and |
|
\ dpANS6 A.6.2.2008 have a word with that name that behaves |
|
\ differently (like NAME). |
|
source 2dup >r >r >in @ over min /string |
|
rot dup bl = IF |
|
drop (parse-white) |
|
ELSE |
|
(word) |
|
THEN |
|
[ has? new-input [IF] ] |
|
2dup input-lexeme! |
|
[ [THEN] ] |
|
2dup + r> - 1+ r> min >in ! ; |
|
|
|
: word ( char "<chars>ccc<char>-- c-addr ) \ core |
|
\G Skip leading delimiters. Parse @i{ccc}, delimited by |
|
\G @i{char}, in the parse area. @i{c-addr} is the address of a |
|
\G transient region containing the parsed string in |
|
\G counted-string format. If the parse area was empty or |
|
\G contained no characters other than delimiters, the resulting |
|
\G string has zero length. A program may replace characters within |
|
\G the counted string. OBSOLESCENT: the counted string has a |
|
\G trailing space that is not included in its length. |
|
sword here place bl here count + c! here ; |
|
|
|
\ quotations |
|
|
|
:noname false :noname ; |
|
:noname locals-wordlist last @ lastcfa @ |
|
postpone AHEAD |
|
locals-list @ locals-list off |
|
postpone SCOPE |
|
true :noname ; |
|
interpret/compile: [: ( compile-time: -- quotation-sys ) \ gforth bracket-colon |
|
\G Starts a quotation |
|
|
|
: ;] ( compile-time: quotation-sys -- ; run-time: -- xt ) \ gforth semi-bracket |
|
\g ends a quotation |
|
POSTPONE ; >r IF |
|
] postpone ENDSCOPE |
|
locals-list ! |
|
postpone THEN |
|
lastcfa ! last ! to locals-wordlist |
|
r> postpone ALiteral |
|
ELSE r> THEN ( xt ) ; immediate |