\ defining words for words with non-default and non-immediate compilation semantics
\ Copyright (C) 1996,1997 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
\ used like
\ : <name> create-interpret/compile ...
\ interpretation> ... <interpretation
\ compilation> ... <compilation ;
noname create
does> abort" interpreting word without interpretation semantics" ;
lastxt >does-code
does> abort" compiling word without compilation semantics" ;
lastxt >does-code
constant no-compilation-does-code
constant no-interpretation-does-code
: create-interpret/compile ( "name" -- ) \ gforth
0 0 interpret/compile:
here lastxt interpret/compile-comp !
no-compilation-does-code here does-code!
[ 0 >body ] literal allot
here lastxt interpret/compile-int !
no-interpretation-does-code here does-code!
[ 0 >body ] literal allot ; \ restrict?
: fix-does-code ( addr ret-addr -- )
lastxt [ interpret/compile-struct %size ] literal + >r
lastxt interpret/compile?
lastxt interpret/compile-int @ r@ >body = and
lastxt interpret/compile-comp @ r> = and
0= abort" not created with create-interpret/compile"
cell+ cell+ maxaligned /does-handler + \ to does-code
swap @ does-code! ;
: (interpretation>) ( -- )
lastxt interpret/compile-int r@ fix-does-code ;
: interpretation> ( compilation. -- orig colon-sys ) \ gforth
POSTPONE (interpretation>) POSTPONE ahead
dodoes, defstart dead-code off 0 set-locals-size-list ; immediate restrict
: <interpretation ( compilation. orig colon-sys -- ) \ gforth
?struc POSTPONE exit
POSTPONE then ; immediate restrict
: (compilation>) ( -- )
lastxt interpret/compile-comp r@ fix-does-code ;
: compilation> ( compilation. -- orig colon-sys ) \ gforth
POSTPONE (compilation>) POSTPONE ahead
dodoes, defstart dead-code off 0 set-locals-size-list POSTPONE >body ; immediate restrict
comp' <interpretation drop
Alias <compilation ( compilation. orig colon-sys -- ) \ gforth
immediate restrict
\ example
\ : constant ( n "name" -- )
\ create-interpret/compile
\ ,
\ interpretation>
\ @
\ <interpretation
\ compilation>
\ @ postpone literal
\ <compilation ;
\ 5 constant five
\ cr
\ five . cr
\ : fuenf five ;
\ see fuenf cr
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