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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