version 1.52, 2006/12/28 14:52:20
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version 1.69, 2011/10/07 21:46:57
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\ miscelleneous words |
\ miscelleneous words |
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\ Copyright (C) 1996,1997,1998,2000,2003,2004,2005 Free Software Foundation, Inc. |
\ Copyright (C) 1996,1997,1998,2000,2003,2004,2005,2006,2007,2008,2009,2010 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 137 AUser CSP
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Line 136 AUser CSP
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\ ]] ... [[ |
\ ]] ... [[ |
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: [[ ( -- ) \ gforth left-bracket-bracket |
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\G switch from postpone state to compile state |
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\ this is only a marker; it is never really interpreted |
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compile-only-error ; immediate |
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[ifdef] compiler1 |
: compile-literal ( n -- ) |
: compile-literal ( n -- ) |
postpone literal ; |
postpone literal ; |
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Line 149 AUser CSP
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Line 154 AUser CSP
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: compile-compile-2literal ( n1 n2 -- ) |
: compile-compile-2literal ( n1 n2 -- ) |
compile-2literal postpone compile-2literal ; |
compile-2literal postpone compile-2literal ; |
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: [[ ( -- ) |
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\G switch from postpone state to compile state |
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\ this is only a marker; it is never really interpreted |
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compile-only-error ; immediate |
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[ifdef] compiler1 |
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: postponer1 ( c-addr u -- ... xt ) |
: postponer1 ( c-addr u -- ... xt ) |
2dup find-name dup if ( c-addr u nt ) |
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 ['] compiler1 is parser1 ['] noop |
2drop ['] compiler1 is parser1 ['] noop |
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Line 178 AUser CSP
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THEN |
THEN |
then ; |
then ; |
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: ]] ( -- ) |
: ]] ( -- ) \ gforth right-bracket-bracket |
\ switch into postpone state |
\G switch into postpone state |
['] postponer1 is parser1 state on ; immediate restrict |
['] postponer1 is parser1 state on ; immediate restrict |
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[then] |
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[ifdef] compiler-r |
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: postponer-r ( addr u -- ... xt ) |
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forth-recognizer do-recognizer |
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over [ s" [[" find-name ] Literal = |
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IF 2drop [comp'] ] drop ELSE ['] >postpone THEN ; |
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: ]] ( -- ) \ gforth right-bracket-bracket |
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\G switch into postpone state |
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['] postponer-r is parser1 state on ; immediate restrict |
[then] |
[then] |
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comp' literal drop alias postpone-literal |
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comp' 2literal drop alias postpone-2literal |
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comp' fliteral drop alias postpone-fliteral |
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comp' sliteral drop alias 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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\ f.rdp |
\ f.rdp |
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: push-right ( c-addr u1 u2 cfill -- ) |
: push-right ( c-addr u1 u2 cfill -- ) |
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Line 388 previous
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\ safe output redirection |
\ safe output redirection |
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: to-outfile-id ( file-id -- ) |
: outfile-execute ( ... xt file-id -- ... ) \ gforth |
to outfile-id ; |
\G execute @i{xt} with the output of @code{type} etc. redirected to |
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\G @i{file-id}. |
: >outfile ( file-id -- r:old-file-id ) |
outfile-id { oldfid } try |
]] outfile-id >r try to-outfile-id [[ ; immediate compile-only |
to outfile-id execute 0 |
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restore |
: outfile< ( r:old-file-id -- ) |
oldfid to outfile-id |
0 ]] literal recover endtry r> to-outfile-id throw [[ |
endtry |
; immediate compile-only |
throw ; |
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: to-infile-id ( file-id -- ) |
: infile-execute ( ... xt file-id -- ... ) \ gforth |
to infile-id ; |
\G execute @i{xt} with the input of @code{key} etc. redirected to |
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\G @i{file-id}. |
: >infile ( file-id -- r:old-file-id ) |
infile-id { oldfid } try |
]] infile-id >r try to-infile-id [[ ; immediate compile-only |
to infile-id execute 0 |
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restore |
: infile< ( r:old-file-id -- ) |
oldfid to infile-id |
0 ]] literal recover endtry r> to-infile-id throw [[ |
endtry |
; immediate compile-only |
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 |
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\ WORD SWORD |
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: sword ( char -- addr len ) \ gforth-obsolete s-word |
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\G Parses like @code{word}, but the output is like @code{parse} output. |
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\G @xref{core-idef}. |
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\ this word was called PARSE-WORD until 0.3.0, but Open Firmware and |
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\ dpANS6 A.6.2.2008 have a word with that name that behaves |
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\ differently (like NAME). |
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source 2dup >r >r >in @ over min /string |
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rot dup bl = IF |
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drop (parse-white) |
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ELSE |
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(word) |
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THEN |
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[ has? new-input [IF] ] |
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2dup input-lexeme! |
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[ [THEN] ] |
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2dup + r> - 1+ r> min >in ! ; |
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: word ( char "<chars>ccc<char>-- c-addr ) \ core |
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\G Skip leading delimiters. Parse @i{ccc}, delimited by |
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\G @i{char}, in the parse area. @i{c-addr} is the address of a |
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\G transient region containing the parsed string in |
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\G counted-string format. If the parse area was empty or |
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\G contained no characters other than delimiters, the resulting |
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\G string has zero length. A program may replace characters within |
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\G the counted string. OBSOLESCENT: the counted string has a |
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\G trailing space that is not included in its length. |
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sword here place bl here count + c! here ; |