version 1.30, 2003/02/03 08:59:29
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version 1.63, 2009/11/28 21:19:34
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\ miscelleneous words |
\ miscelleneous words |
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\ Copyright (C) 1996,1997,1998,2000 Free Software Foundation, Inc. |
\ Copyright (C) 1996,1997,1998,2000,2003,2004,2005,2006,2007,2008 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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require glocals.fs |
require glocals.fs |
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Line 51 AUser CSP
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Line 50 AUser CSP
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\G @code{system} command. |
\G @code{system} command. |
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: 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 |
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\G variable @code{GFORTHSYSTEMPREFIX} (or its default value) is |
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\G prepended to the string (mainly to support using @code{command.com} |
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\G as shell in Windows instead of whatever shell Cygwin uses by |
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\G default; @pxref{Environment variables}). |
(system) throw TO $? ; |
(system) throw TO $? ; |
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: sh ( "..." -- ) \ gforth |
: sh ( "..." -- ) \ gforth |
Line 98 AUser CSP
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Line 101 AUser CSP
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ur compile-fliterals uw compile-literals |
ur compile-fliterals uw compile-literals |
target compile, POSTPONE exit reveal ; |
target compile, POSTPONE exit reveal ; |
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: 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. |
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\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 |
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\ !! 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
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Line 122 AUser CSP
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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 ; |
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: 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} |
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{ 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 134 AUser CSP
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Line 139 AUser CSP
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: compile-literal ( n -- ) |
: compile-literal ( n -- ) |
postpone literal ; |
postpone literal ; |
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: [[ ( -- ) |
: compile-compile-literal ( n -- ) |
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compile-literal postpone compile-literal ; |
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: compile-2literal ( n1 n2 -- ) |
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postpone 2literal ; |
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: compile-compile-2literal ( n1 n2 -- ) |
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compile-2literal postpone compile-2literal ; |
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: [[ ( -- ) \ gforth left-bracket-bracket |
\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 |
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: postponer ( c-addr u -- ) |
[ifdef] compiler1 |
2dup find-name dup if ( c-addr u nt ) |
: postponer1 ( c-addr u -- ... xt ) |
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2dup find-name |
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[ifdef] run-prelude run-prelude [then] |
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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 |
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ELSE |
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['] compile-compile-literal |
THEN |
THEN |
postpone Literal postpone compile-literal |
2rdrop |
2drop |
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ELSE |
ELSE |
drop no.extensions |
drop 2r> no.extensions |
THEN |
THEN |
then ; |
then ; |
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: ]] ( -- ) |
: ]] ( -- ) \ 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 |
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: postpone-literal postpone literal ; |
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: postpone-2literal postpone 2literal ; |
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: postpone-fliteral postpone fliteral ; |
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: postpone-sliteral postpone sliteral ; |
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: ]]L ( postponing: x -- ; compiling: -- x ) \ gforth right-bracket-bracket-l |
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\G Shortcut for @code{]] literal}. |
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]] postpone-literal ]] [[ ; immediate |
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: ]]2L ( postponing: x1 x2 -- ; compiling: -- x1 x2 ) \ gforth right-bracket-bracket-two-l |
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\G Shortcut for @code{]] 2literal}. |
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]] postpone-2literal ]] [[ ; immediate |
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: ]]FL ( postponing: r -- ; compiling: -- r ) \ gforth right-bracket-bracket-f-l |
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\G Shortcut for @code{]] fliteral}. |
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]] postpone-fliteral ]] [[ ; immediate |
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: ]]SL ( postponing: addr1 u -- ; compiling: -- addr2 u ) \ gforth right-bracket-bracket-s-l |
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\G Shortcut for @code{]] sliteral}; if the string already has been |
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\G allocated permanently, you can use @code{]]2L} instead. |
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]] postpone-sliteral ]] [[ ; immediate |
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[then] |
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\ f.rdp |
\ f.rdp |
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Line 181 AUser CSP
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Line 223 AUser CSP
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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 |
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befored 1+ ur >= if \ <=1 digit left, will be pushed out by '.' |
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rf fabs f2* 0.1e nd s>d d>f f** f> if \ round last digit |
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'1 c-addr befored + 1- c! |
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endif |
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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 275 AUser CSP
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Line 322 AUser CSP
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10e f* |
10e f* |
loop ; |
loop ; |
[then] |
[then] |
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: f.s ( -- ) \ gforth f-dot-s |
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\G Display the number of items on the floating-point stack, followed |
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\G by a list of the items (but not more than specified by |
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\G @code{maxdepth-.s}; TOS is the right-most item. |
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." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 |
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?DO dup i - 1- floats fp@ + f@ 16 5 11 f.rdp space LOOP drop ; |
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\ defer stuff |
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[ifundef] defer@ : defer@ >body @ ; [then] |
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:noname ' defer@ ; |
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:noname postpone ['] postpone defer@ ; |
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interpret/compile: action-of ( interpretation "name" -- xt; compilation "name" -- ; run-time -- xt ) \ gforth |
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\G @i{Xt} is the XT that is currently assigned to @i{name}. |
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' action-of |
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comp' action-of drop |
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interpret/compile: what's ( interpretation "name" -- xt; compilation "name" -- ; run-time -- xt ) \ gforth-obsolete |
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\G Old name of @code{action-of} |
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: typewhite ( addr n -- ) \ gforth |
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\G Like type, but white space is printed instead of the characters. |
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\ bounds u+do |
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0 max bounds ?do |
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i c@ #tab = if \ check for tab |
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#tab |
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else |
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bl |
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then |
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emit |
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loop ; |
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\ w and l stuff |
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environment-wordlist >order |
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16 address-unit-bits / 1 max constant /w ( -- u ) \ gforth slash-w |
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\G address units for a 16-bit value |
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32 address-unit-bits / 1 max constant /l ( -- u ) \ gforth slash-l |
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\G address units for a 32-bit value |
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previous |
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[ifdef] uw@ |
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\ Open firmware names |
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' uw@ alias w@ ( addr -- u ) |
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' ul@ alias l@ ( addr -- u ) |
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\ ' sw@ alias <w@ ( addr -- n ) |
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[then] |
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\ safe output redirection |
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: outfile-execute ( ... xt file-id -- ... ) \ gforth |
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\G execute @i{xt} with the output of @code{type} etc. redirected to |
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\G @i{file-id}. |
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outfile-id { oldfid } try |
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to outfile-id execute 0 |
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restore |
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oldfid to outfile-id |
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endtry |
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throw ; |
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: infile-execute ( ... xt file-id -- ... ) \ gforth |
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\G execute @i{xt} with the input of @code{key} etc. redirected to |
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\G @i{file-id}. |
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infile-id { oldfid } try |
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to infile-id execute 0 |
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restore |
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oldfid to infile-id |
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endtry |
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throw ; |
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\ safe BASE wrapper |
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: base-execute ( i*x xt u -- j*x ) \ gforth |
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\G execute @i{xt} with the content of @code{BASE} being @i{u}, and |
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\G restoring the original @code{BASE} afterwards. |
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base @ { oldbase } \ use local, because TRY blocks the return stack |
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try |
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base ! execute 0 |
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restore |
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oldbase base ! |
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endtry |
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throw ; |
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\ th |
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: th ( addr1 u -- addr2 ) |
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cells + ; |
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\ \\\ - skip to end of file |
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: \\\ ( -- ) \ gforth |
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\G skip remaining source file |
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source-id dup 0> IF |
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>r r@ file-size throw r> reposition-file throw |
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BEGIN refill 0= UNTIL postpone \ THEN ; immediate |