version 1.13, 1999/12/03 18:24:23
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version 1.18, 2000/11/29 22:21:57
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\ miscelleneous words |
\ miscelleneous words |
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\ Copyright (C) 1996,1997,1998 Free Software Foundation, Inc. |
\ Copyright (C) 1996,1997,1998,2000 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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require glocals.fs |
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' 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 49 AUser CSP
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Line 50 AUser CSP
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\G @code{Value} -- the exit status returned by the most recently executed |
\G @code{Value} -- the exit status returned by the most recently executed |
\G @code{system} command. |
\G @code{system} command. |
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: system ( 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 system |
\G for execution in a sub-shell. |
\G for execution in a sub-shell. |
(system) throw TO $? ; |
(system) throw TO $? ; |
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Line 70 AUser CSP
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Line 71 AUser CSP
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: in-return-stack? ( addr -- f ) |
: in-return-stack? ( addr -- f ) |
rp0 @ swap - [ forthstart 6 cells + ]L @ u< ; |
rp0 @ swap - [ forthstart 6 cells + ]L @ u< ; |
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\ const-does> |
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: compile-literals ( w*u u -- ; run-time: -- w*u ) recursive |
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\ compile u literals, starting with the bottommost one |
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?dup-if |
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swap >r 1- compile-literals |
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r> POSTPONE literal |
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endif ; |
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: compile-fliterals ( r*u u -- ; run-time: -- w*u ) recursive |
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\ compile u fliterals, starting with the bottommost one |
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?dup-if |
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{ F: r } 1- compile-fliterals |
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r POSTPONE fliteral |
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endif ; |
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: (const-does>) ( w*uw r*ur uw ur target "name" -- ) |
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\ define a colon definition "name" containing w*uw r*ur as |
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\ literals and a call to target. |
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{ uw ur target } |
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header docol: cfa, \ start colon def without stack junk |
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ur compile-fliterals uw compile-literals |
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target compile, POSTPONE exit reveal ; |
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: const-does> ( run-time: w*uw r*ur uw ur "name" -- ) |
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\G Defines @var{name} and returns.@sp 0 |
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\G @var{name} execution: pushes @var{w*uw r*ur}, then performs the |
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\G code following the @code{const-does>}. |
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here >r 0 POSTPONE literal |
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POSTPONE (const-does>) |
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POSTPONE ; |
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noname : POSTPONE rdrop |
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lastxt r> cell+ ! \ patch the literal |
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; immediate |