version 1.33, 2004/05/08 17:14:30
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version 1.49, 2006/01/28 18:46:15
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\ miscelleneous words |
\ miscelleneous words |
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\ Copyright (C) 1996,1997,1998,2000,2003 Free Software Foundation, Inc. |
\ Copyright (C) 1996,1997,1998,2000,2003,2004,2005 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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Line 51 AUser CSP
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Line 51 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 102 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 |
Line 110 AUser CSP
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Line 115 AUser CSP
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; 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 123 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 140 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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: [[ ( -- ) |
: [[ ( -- ) |
\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 |
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: postponer1 ( c-addr u -- ... xt ) |
2dup find-name dup if ( c-addr u nt ) |
2dup find-name 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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: ]] ( -- ) |
: ]] ( -- ) |
\ switch into postpone state |
\ switch into postpone state |
['] postponer is parser state on ; immediate restrict |
['] postponer1 is parser1 state on ; immediate restrict |
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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 200 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 281 AUser CSP
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Line 305 AUser CSP
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\G followed by a list of the items; TOS is the right-most item. |
\G followed by a list of the items; TOS is the right-most item. |
." <" fdepth 0 .r ." > " fdepth 0 max maxdepth-.s @ min dup 0 |
." <" 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 ; |
?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 |
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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 |
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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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