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Mon Aug 26 10:07:19 1996 UTC
(23 years ago) by anton
CVS tags: HEAD
' and ['] now deliver an error for compile-only words.
renamed special- words into interpret/compile- words.
refactored some of the recent changes.
adapted see to the changes
added way to make a word that defines words with differring
interpretation and compilation code.
\ defining words for words with non-default and non-immediate compilation semantics
\ Copyright (C) 1996 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 ;
does> abort" interpreting word without interpretation semantics" ;
does> abort" compiling word without compilation semantics" ;
: create-interpret/compile ( -- )
0 0 interpret/compile:
here lastxt interpret/compile-int !
no-interpretation-does-code here does-code!
0 >body allot
here lastxt interpret/compile-comp !
no-compilation-does-code here does-code!
0 >body allot ; \ restrict?
: fix-does-code ( addr ret-addr -- )
lastxt [ interpret/compile-struct drop ] literal + >r
lastxt interpret/compile-int @ r@ = and
lastxt interpret/compile-comp @ r> >body = and
0= abort" not created with create-interpret/compile"
cell+ cell+ /does-handler + \ to does-code
swap @ does-code! ;
: (interpretation>) ( -- )
lastxt interpret/compile-int r@ fix-does-code ;
: interpretation> ( -- orig colon-sys )
POSTPONE (interpretation>) POSTPONE ahead
dodoes, defstart dead-code off 0 set-locals-size-list POSTPONE >body ; immediate restrict
: <interpretation ( orig colon-sys -- )
?struc POSTPONE exit
POSTPONE then ; immediate restrict
: (compilation>) ( -- )
lastxt interpret/compile-comp r@ fix-does-code ;
: compilation> ( -- orig colon-sys )
POSTPONE (compilation>) POSTPONE ahead
dodoes, defstart dead-code off 0 set-locals-size-list ; immediate restrict
comp' <interpretation drop Alias <compilation immediate restrict
\ : constant ( n "name" -- )
\ @ postpone literal
\ <compilation ;
\ 5 constant five
\ five . cr
\ : fuenf five ;
\ see fuenf cr