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| 1 : | anton | 1.1 | \ defining words for words with non-default and non-immediate compilation semantics |
| 2 : | |||
| 3 : | \ Copyright (C) 1996 Free Software Foundation, Inc. | ||
| 4 : | |||
| 5 : | \ This file is part of Gforth. | ||
| 6 : | |||
| 7 : | \ Gforth is free software; you can redistribute it and/or | ||
| 8 : | \ modify it under the terms of the GNU General Public License | ||
| 9 : | \ as published by the Free Software Foundation; either version 2 | ||
| 10 : | \ of the License, or (at your option) any later version. | ||
| 11 : | |||
| 12 : | \ This program is distributed in the hope that it will be useful, | ||
| 13 : | \ but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 : | \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 15 : | \ GNU General Public License for more details. | ||
| 16 : | |||
| 17 : | \ You should have received a copy of the GNU General Public License | ||
| 18 : | \ along with this program; if not, write to the Free Software | ||
| 19 : | \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| 20 : | |||
| 21 : | \ used like | ||
| 22 : | \ : <name> create-interpret/compile ... | ||
| 23 : | \ interpretation> ... <interpretation | ||
| 24 : | \ compilation> ... <compilation ; | ||
| 25 : | |||
| 26 : | |||
| 27 : | noname create | ||
| 28 : | does> abort" interpreting word without interpretation semantics" ; | ||
| 29 : | lastxt >does-code | ||
| 30 : | does> abort" compiling word without compilation semantics" ; | ||
| 31 : | lastxt >does-code | ||
| 32 : | constant no-compilation-does-code | ||
| 33 : | constant no-interpretation-does-code | ||
| 34 : | |||
| 35 : | : create-interpret/compile ( -- ) | ||
| 36 : | 0 0 interpret/compile: | ||
| 37 : | here lastxt interpret/compile-int ! | ||
| 38 : | no-interpretation-does-code here does-code! | ||
| 39 : | 0 >body allot | ||
| 40 : | here lastxt interpret/compile-comp ! | ||
| 41 : | no-compilation-does-code here does-code! | ||
| 42 : | 0 >body allot ; \ restrict? | ||
| 43 : | |||
| 44 : | : fix-does-code ( addr ret-addr -- ) | ||
| 45 : | lastxt [ interpret/compile-struct drop ] literal + >r | ||
| 46 : | lastxt interpret/compile? | ||
| 47 : | lastxt interpret/compile-int @ r@ = and | ||
| 48 : | lastxt interpret/compile-comp @ r> >body = and | ||
| 49 : | 0= abort" not created with create-interpret/compile" | ||
| 50 : | cell+ cell+ /does-handler + \ to does-code | ||
| 51 : | swap @ does-code! ; | ||
| 52 : | |||
| 53 : | : (interpretation>) ( -- ) | ||
| 54 : | lastxt interpret/compile-int r@ fix-does-code ; | ||
| 55 : | |||
| 56 : | : interpretation> ( -- orig colon-sys ) | ||
| 57 : | POSTPONE (interpretation>) POSTPONE ahead | ||
| 58 : | dodoes, defstart dead-code off 0 set-locals-size-list POSTPONE >body ; immediate restrict | ||
| 59 : | |||
| 60 : | : <interpretation ( orig colon-sys -- ) | ||
| 61 : | ?struc POSTPONE exit | ||
| 62 : | POSTPONE then ; immediate restrict | ||
| 63 : | |||
| 64 : | : (compilation>) ( -- ) | ||
| 65 : | lastxt interpret/compile-comp r@ fix-does-code ; | ||
| 66 : | |||
| 67 : | : compilation> ( -- orig colon-sys ) | ||
| 68 : | POSTPONE (compilation>) POSTPONE ahead | ||
| 69 : | dodoes, defstart dead-code off 0 set-locals-size-list ; immediate restrict | ||
| 70 : | |||
| 71 : | comp' <interpretation drop Alias <compilation immediate restrict | ||
| 72 : | |||
| 73 : | \ example | ||
| 74 : | \ : constant ( n "name" -- ) | ||
| 75 : | \ create-interpret/compile | ||
| 76 : | \ , | ||
| 77 : | \ interpretation> | ||
| 78 : | \ @ | ||
| 79 : | \ <interpretation | ||
| 80 : | \ compilation> | ||
| 81 : | \ @ postpone literal | ||
| 82 : | \ <compilation ; | ||
| 83 : | |||
| 84 : | \ 5 constant five | ||
| 85 : | |||
| 86 : | \ cr | ||
| 87 : | \ five . cr | ||
| 88 : | \ : fuenf five ; | ||
| 89 : | \ see fuenf cr |
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