version 1.9, 1995/01/30 18:47:50
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version 1.14, 1995/10/16 18:33:10
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Line 61
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Line 61
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\ Currently locals may only be |
\ Currently locals may only be |
\ defined at the outer level and TO is not supported. |
\ defined at the outer level and TO is not supported. |
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include search-order.fs |
require search-order.fs |
include float.fs |
require float.fs |
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: compile-@local ( n -- ) |
: compile-@local ( n -- ) \ gforth compile-fetch-local |
case |
case |
0 of postpone @local0 endof |
0 of postpone @local0 endof |
1 cells of postpone @local1 endof |
1 cells of postpone @local1 endof |
Line 73 include float.fs
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Line 73 include float.fs
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( otherwise ) dup postpone @local# , |
( otherwise ) dup postpone @local# , |
endcase ; |
endcase ; |
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: compile-f@local ( n -- ) |
: compile-f@local ( n -- ) \ gforth compile-f-fetch-local |
case |
case |
0 of postpone f@local0 endof |
0 of postpone f@local0 endof |
1 floats of postpone f@local1 endof |
1 floats of postpone f@local1 endof |
Line 137 variable locals-dp \ so here's the speci
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Line 137 variable locals-dp \ so here's the speci
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\ defines the local "name"; the offset of the local shall be |
\ defines the local "name"; the offset of the local shall be |
\ stored in a-addr |
\ stored in a-addr |
create |
create |
immediate |
immediate restrict |
here 0 , ( place for the offset ) ; |
here 0 , ( place for the offset ) ; |
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: lp-offset ( n1 -- n2 ) |
: lp-offset ( n1 -- n2 ) |
Line 153 variable locals-dp \ so here's the speci
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Line 153 variable locals-dp \ so here's the speci
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vocabulary locals-types \ this contains all the type specifyers, -- and } |
vocabulary locals-types \ this contains all the type specifyers, -- and } |
locals-types definitions |
locals-types definitions |
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: W: |
: W: ( "name" -- a-addr xt ) \ gforth w-colon |
create-local ( "name" -- a-addr xt ) |
create-local |
\ xt produces the appropriate locals pushing code when executed |
\ xt produces the appropriate locals pushing code when executed |
['] compile-pushlocal-w |
['] compile-pushlocal-w |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
\ compiles a local variable access |
\ compiles a local variable access |
@ lp-offset compile-@local ; |
@ lp-offset compile-@local ; |
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: W^ |
: W^ ( "name" -- a-addr xt ) \ gforth w-caret |
create-local ( "name" -- a-addr xt ) |
create-local |
['] compile-pushlocal-w |
['] compile-pushlocal-w |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
postpone laddr# @ lp-offset, ; |
postpone laddr# @ lp-offset, ; |
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: F: |
: F: ( "name" -- a-addr xt ) \ gforth f-colon |
create-local ( "name" -- a-addr xt ) |
create-local |
['] compile-pushlocal-f |
['] compile-pushlocal-f |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
@ lp-offset compile-f@local ; |
@ lp-offset compile-f@local ; |
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: F^ |
: F^ ( "name" -- a-addr xt ) \ gforth f-caret |
create-local ( "name" -- a-addr xt ) |
create-local |
['] compile-pushlocal-f |
['] compile-pushlocal-f |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
postpone laddr# @ lp-offset, ; |
postpone laddr# @ lp-offset, ; |
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: D: |
: D: ( "name" -- a-addr xt ) \ gforth d-colon |
create-local ( "name" -- a-addr xt ) |
create-local |
['] compile-pushlocal-d |
['] compile-pushlocal-d |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
postpone laddr# @ lp-offset, postpone 2@ ; |
postpone laddr# @ lp-offset, postpone 2@ ; |
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: D^ |
: D^ ( "name" -- a-addr xt ) \ gforth d-caret |
create-local ( "name" -- a-addr xt ) |
create-local |
['] compile-pushlocal-d |
['] compile-pushlocal-d |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
postpone laddr# @ lp-offset, ; |
postpone laddr# @ lp-offset, ; |
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: C: |
: C: ( "name" -- a-addr xt ) \ gforth c-colon |
create-local ( "name" -- a-addr xt ) |
create-local |
['] compile-pushlocal-c |
['] compile-pushlocal-c |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
postpone laddr# @ lp-offset, postpone c@ ; |
postpone laddr# @ lp-offset, postpone c@ ; |
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: C^ |
: C^ ( "name" -- a-addr xt ) \ gforth c-caret |
create-local ( "name" -- a-addr xt ) |
create-local |
['] compile-pushlocal-c |
['] compile-pushlocal-c |
does> ( Compilation: -- ) ( Run-time: -- w ) |
does> ( Compilation: -- ) ( Run-time: -- w ) |
postpone laddr# @ lp-offset, ; |
postpone laddr# @ lp-offset, ; |
Line 238 new-locals-map ' new-locals >body cell+
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Line 238 new-locals-map ' new-locals >body cell+
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variable old-dpp |
variable old-dpp |
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\ and now, finally, the user interface words |
\ and now, finally, the user interface words |
: { ( -- addr wid 0 ) |
: { ( -- addr wid 0 ) \ gforth open-brace |
dp old-dpp ! |
dp old-dpp ! |
locals-dp dpp ! |
locals-dp dpp ! |
also new-locals |
also new-locals |
Line 248 variable old-dpp
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Line 248 variable old-dpp
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locals-types definitions |
locals-types definitions |
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: } ( addr wid 0 a-addr1 xt1 ... -- ) |
: } ( addr wid 0 a-addr1 xt1 ... -- ) \ gforth close-brace |
\ ends locals definitions |
\ ends locals definitions |
] old-dpp @ dpp ! |
] old-dpp @ dpp ! |
begin |
begin |
Line 262 locals-types definitions
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Line 262 locals-types definitions
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previous previous |
previous previous |
locals-list TO locals-wordlist ; |
locals-list TO locals-wordlist ; |
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: -- ( addr wid 0 ... -- ) |
: -- ( addr wid 0 ... -- ) \ gforth dash-dash |
} |
} |
[char] } parse 2drop ; |
[char] } parse 2drop ; |
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Line 373 forth definitions
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Line 373 forth definitions
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\ explicit scoping |
\ explicit scoping |
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: scope ( -- scope ) |
: scope ( compilation -- scope ; run-time -- ) \ gforth |
cs-push-part scopestart ; immediate |
cs-push-part scopestart ; immediate |
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: endscope ( scope -- ) |
: endscope ( compilation scope -- ; run-time -- ) \ gforth |
scope? |
scope? |
drop |
drop |
locals-list @ common-list |
locals-list @ common-list |
Line 449 forth definitions
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Line 449 forth definitions
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\ And here's finally the ANS standard stuff |
\ And here's finally the ANS standard stuff |
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: (local) ( addr u -- ) |
: (local) ( addr u -- ) \ local paren-local-paren |
\ a little space-inefficient, but well deserved ;-) |
\ a little space-inefficient, but well deserved ;-) |
\ In exchange, there are no restrictions whatsoever on using (local) |
\ In exchange, there are no restrictions whatsoever on using (local) |
\ as long as you use it in a definition |
\ as long as you use it in a definition |
Line 475 forth definitions
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Line 475 forth definitions
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: definer! ( definer xt -- ) |
: definer! ( definer xt -- ) |
\ gives the word represented by xt the behaviour associated with definer |
\ gives the word represented by xt the behaviour associated with definer |
over 1 and if |
over 1 and if |
does-code! |
swap [ 1 invert ] literal and does-code! |
else |
else |
code-address! |
code-address! |
then ; |
then ; |
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\ !! untested |
\ !! untested |
: TO ( c|w|d|r "name" -- ) |
: TO ( c|w|d|r "name" -- ) \ core-ext,local |
\ !! state smart |
\ !! state smart |
0 0 0. 0.0e0 { c: clocal w: wlocal d: dlocal f: flocal } |
0 0 0. 0.0e0 { c: clocal w: wlocal d: dlocal f: flocal } |
' dup >definer |
' dup >definer |
Line 498 forth definitions
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Line 498 forth definitions
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OF POSTPONE laddr# >body @ lp-offset, POSTPONE d! ENDOF |
OF POSTPONE laddr# >body @ lp-offset, POSTPONE d! ENDOF |
[ ' flocal >definer ] literal |
[ ' flocal >definer ] literal |
OF POSTPONE laddr# >body @ lp-offset, POSTPONE f! ENDOF |
OF POSTPONE laddr# >body @ lp-offset, POSTPONE f! ENDOF |
abort" can only store TO value or local value" |
-&32 throw |
endcase |
endcase |
else |
else |
[ ' locals-wordlist >definer ] literal = |
[ ' locals-wordlist >definer ] literal = |
if |
if |
>body ! |
>body ! |
else |
else |
abort" can only store TO value" |
-&32 throw |
endif |
endif |
endif ; immediate |
endif ; immediate |
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: locals| |
: locals| |
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\ don't use 'locals|'! use '{'! A portable and free '{' |
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\ implementation is anslocals.fs |
BEGIN |
BEGIN |
name 2dup s" |" compare 0<> |
name 2dup s" |" compare 0<> |
WHILE |
WHILE |
(local) |
(local) |
REPEAT |
REPEAT |
drop 0 (local) ; immediate restrict |
drop 0 (local) ; immediate restrict |