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| 1 : | pazsan | 1.1 | \ Local primitives 17jan92py |
| 2 : | |||
| 3 : | anton | 1.3 | \ Copyright (C) 1995 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 : | anton | 1.5 | \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| 20 : | anton | 1.3 | |
| 21 : | pazsan | 1.1 | Variable loffset 0 loffset ! |
| 22 : | Variable locals here locals ! 100 ( some) cells allot | ||
| 23 : | : local, ( offset -- ) postpone rp@ loffset @ swap - | ||
| 24 : | postpone Literal postpone + ; | ||
| 25 : | : delocal, ( offset -- ) local, postpone rp! ; | ||
| 26 : | : (local DOES> @ local, postpone @ ; | ||
| 27 : | pazsan | 1.2 | : f>r r> rp@ 1 floats - dup rp! f! >r ; |
| 28 : | : (flocal DOES> @ local, postpone f@ ; | ||
| 29 : | pazsan | 1.1 | |
| 30 : | pazsan | 1.2 | : do-nothing ; |
| 31 : | : ralign r> | ||
| 32 : | BEGIN rp@ [ 1 floats 1- ] Literal and | ||
| 33 : | WHILE [ ' do-nothing >body ] ALiteral >r | ||
| 34 : | REPEAT >r ; | ||
| 35 : | |||
| 36 : | : <local ( -- sys1 ) current @ @ loffset @ locals @ | ||
| 37 : | over 0= IF postpone ralign THEN ; immediate | ||
| 38 : | pazsan | 1.1 | : local: ( -- ) postpone >r last @ lastcfa @ here locals @ dp ! |
| 39 : | cell loffset +! Create loffset @ , immediate (local | ||
| 40 : | here locals ! dp ! lastcfa ! last ! ; immediate | ||
| 41 : | pazsan | 1.2 | : flocal: ( -- ) last @ lastcfa @ here locals @ dp ! |
| 42 : | BEGIN loffset @ 0 1 floats fm/mod drop WHILE | ||
| 43 : | 0 postpone Literal postpone >r 1 cells loffset +! REPEAT | ||
| 44 : | postpone f>r Create loffset @ , immediate (flocal | ||
| 45 : | here locals ! dp ! lastcfa ! last ! ; immediate | ||
| 46 : | pazsan | 1.1 | : local> ( sys1 -- sys2 ) ; immediate |
| 47 : | : local; ( sys2 -- ) locals ! dup delocal, | ||
| 48 : | loffset ! current @ ! ; immediate | ||
| 49 : | : TO >in @ ' dup @ [ ' (local >body cell+ ] ALiteral = | ||
| 50 : | IF >body @ local, postpone ! drop | ||
| 51 : | pazsan | 1.2 | ELSE dup @ [ ' (flocal >body cell+ ] ALiteral = |
| 52 : | IF >body @ local, postpone f! drop | ||
| 53 : | ELSE drop >in ! postpone to THEN THEN ; immediate | ||
| 54 : | pazsan | 1.1 | |
| 55 : | : DO 2 cells loffset +! postpone DO ; immediate restrict | ||
| 56 : | : ?DO 2 cells loffset +! postpone ?DO ; immediate restrict | ||
| 57 : | : FOR 2 cells loffset +! postpone FOR ; immediate restrict | ||
| 58 : | : LOOP -2 cells loffset +! postpone LOOP ; immediate restrict | ||
| 59 : | : +LOOP -2 cells loffset +! postpone +LOOP ; immediate restrict | ||
| 60 : | : NEXT -2 cells loffset +! postpone NEXT ; immediate restrict | ||
| 61 : | : >R 1 cells loffset +! postpone >R ; immediate restrict | ||
| 62 : | : R> -1 cells loffset +! postpone R> ; immediate restrict | ||
| 63 : | |||
| 64 : | \ High level locals 19aug93py | ||
| 65 : | |||
| 66 : | : { postpone <local -1 | ||
| 67 : | BEGIN >in @ name dup c@ 1 = swap 1+ c@ '| = and UNTIL | ||
| 68 : | drop >in @ >r | ||
| 69 : | BEGIN dup 0< 0= WHILE >in ! postpone local: REPEAT drop | ||
| 70 : | r> >in ! postpone local> ; immediate restrict | ||
| 71 : | |||
| 72 : | pazsan | 1.2 | : F{ postpone <local -1 |
| 73 : | BEGIN >in @ name dup c@ 1 = swap 1+ c@ '| = and UNTIL | ||
| 74 : | drop >in @ >r | ||
| 75 : | BEGIN dup 0< 0= WHILE >in ! postpone Flocal: REPEAT drop | ||
| 76 : | r> >in ! postpone local> ; immediate restrict | ||
| 77 : | |||
| 78 : | pazsan | 1.1 | ' local; alias } immediate restrict |
| 79 : | |||
| 80 : | \ ANS Locals 19aug93py | ||
| 81 : | |||
| 82 : | Create inlocal 5 cells allot inlocal off | ||
| 83 : | : (local) ( addr u -- ) inlocal @ 0= | ||
| 84 : | IF postpone <local inlocal on | ||
| 85 : | inlocal 3 cells + 2! inlocal cell+ 2! THEN | ||
| 86 : | anton | 1.4 | dup IF linestart @ >r sourceline# >r loadfile @ >r |
| 87 : | pazsan | 1.1 | blk @ >r >tib @ >r #tib @ dup >r >in @ >r |
| 88 : | |||
| 89 : | >tib +! dup #tib ! >tib @ swap move | ||
| 90 : | >in off blk off loadfile off -1 linestart ! | ||
| 91 : | |||
| 92 : | postpone local: | ||
| 93 : | |||
| 94 : | r> >in ! r> #tib ! r> >tib ! r> blk ! | ||
| 95 : | r> loadfile ! r> loadline ! r> linestart ! | ||
| 96 : | ELSE 2drop inlocal cell+ 2@ inlocal 3 cells + 2@ | ||
| 97 : | postpone local> | ||
| 98 : | inlocal 2 cells + 2! inlocal cell+ ! THEN ; | ||
| 99 : | |||
| 100 : | : ?local; inlocal @ | ||
| 101 : | IF inlocal cell+ @ inlocal 2 cells + 2@ | ||
| 102 : | postpone local; inlocal off THEN ; | ||
| 103 : | |||
| 104 : | : ; ?local; postpone ; ; immediate restrict | ||
| 105 : | : DOES> ?local; postpone DOES> ; immediate | ||
| 106 : | pazsan | 1.2 | : EXIT inlocal @ IF 0 delocal, THEN postpone EXIT ; immediate |
| 107 : | pazsan | 1.1 | |
| 108 : | : locals| | ||
| 109 : | BEGIN name dup c@ 1 = over 1+ c@ '| = and 0= WHILE | ||
| 110 : | count (local) REPEAT 0 (local) ; immediate restrict |
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