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| 1 : | pazsan | 1.1 | \ Local primitives 17jan92py |
| 2 : | |||
| 3 : | Variable loffset 0 loffset ! | ||
| 4 : | Variable locals here locals ! 100 ( some) cells allot | ||
| 5 : | : local, ( offset -- ) postpone rp@ loffset @ swap - | ||
| 6 : | postpone Literal postpone + ; | ||
| 7 : | : delocal, ( offset -- ) local, postpone rp! ; | ||
| 8 : | : (local DOES> @ local, postpone @ ; | ||
| 9 : | |||
| 10 : | : <local ( -- sys1 ) current @ @ loffset @ locals @ ; immediate | ||
| 11 : | : local: ( -- ) postpone >r last @ lastcfa @ here locals @ dp ! | ||
| 12 : | cell loffset +! Create loffset @ , immediate (local | ||
| 13 : | here locals ! dp ! lastcfa ! last ! ; immediate | ||
| 14 : | : local> ( sys1 -- sys2 ) ; immediate | ||
| 15 : | : local; ( sys2 -- ) locals ! dup delocal, | ||
| 16 : | loffset ! current @ ! ; immediate | ||
| 17 : | : TO >in @ ' dup @ [ ' (local >body cell+ ] ALiteral = | ||
| 18 : | IF >body @ local, postpone ! drop | ||
| 19 : | ELSE drop >in ! postpone to THEN ; immediate | ||
| 20 : | : EXIT loffset @ IF 0 delocal, THEN postpone EXIT ; immediate | ||
| 21 : | |||
| 22 : | : DO 2 cells loffset +! postpone DO ; immediate restrict | ||
| 23 : | : ?DO 2 cells loffset +! postpone ?DO ; immediate restrict | ||
| 24 : | : FOR 2 cells loffset +! postpone FOR ; immediate restrict | ||
| 25 : | : LOOP -2 cells loffset +! postpone LOOP ; immediate restrict | ||
| 26 : | : +LOOP -2 cells loffset +! postpone +LOOP ; immediate restrict | ||
| 27 : | : NEXT -2 cells loffset +! postpone NEXT ; immediate restrict | ||
| 28 : | : >R 1 cells loffset +! postpone >R ; immediate restrict | ||
| 29 : | : R> -1 cells loffset +! postpone R> ; immediate restrict | ||
| 30 : | |||
| 31 : | \ High level locals 19aug93py | ||
| 32 : | |||
| 33 : | : { postpone <local -1 | ||
| 34 : | BEGIN >in @ name dup c@ 1 = swap 1+ c@ '| = and UNTIL | ||
| 35 : | drop >in @ >r | ||
| 36 : | BEGIN dup 0< 0= WHILE >in ! postpone local: REPEAT drop | ||
| 37 : | r> >in ! postpone local> ; immediate restrict | ||
| 38 : | |||
| 39 : | ' local; alias } immediate restrict | ||
| 40 : | |||
| 41 : | \ ANS Locals 19aug93py | ||
| 42 : | |||
| 43 : | Create inlocal 5 cells allot inlocal off | ||
| 44 : | : (local) ( addr u -- ) inlocal @ 0= | ||
| 45 : | IF postpone <local inlocal on | ||
| 46 : | inlocal 3 cells + 2! inlocal cell+ 2! THEN | ||
| 47 : | dup IF linestart @ >r loadline @ >r loadfile @ >r | ||
| 48 : | blk @ >r >tib @ >r #tib @ dup >r >in @ >r | ||
| 49 : | |||
| 50 : | >tib +! dup #tib ! >tib @ swap move | ||
| 51 : | >in off blk off loadfile off -1 linestart ! | ||
| 52 : | |||
| 53 : | postpone local: | ||
| 54 : | |||
| 55 : | r> >in ! r> #tib ! r> >tib ! r> blk ! | ||
| 56 : | r> loadfile ! r> loadline ! r> linestart ! | ||
| 57 : | ELSE 2drop inlocal cell+ 2@ inlocal 3 cells + 2@ | ||
| 58 : | postpone local> | ||
| 59 : | inlocal 2 cells + 2! inlocal cell+ ! THEN ; | ||
| 60 : | |||
| 61 : | : ?local; inlocal @ | ||
| 62 : | IF inlocal cell+ @ inlocal 2 cells + 2@ | ||
| 63 : | postpone local; inlocal off THEN ; | ||
| 64 : | |||
| 65 : | : ; ?local; postpone ; ; immediate restrict | ||
| 66 : | : DOES> ?local; postpone DOES> ; immediate | ||
| 67 : | |||
| 68 : | : locals| | ||
| 69 : | BEGIN name dup c@ 1 = over 1+ c@ '| = and 0= WHILE | ||
| 70 : | count (local) REPEAT 0 (local) ; immediate restrict |
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