version 1.13, 1997/02/06 21:23:01
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version 1.22, 1997/03/27 13:31:02
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Line 24 HEX
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Line 24 HEX
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\ labels for some code addresses |
\ labels for some code addresses |
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doer? :docon [IF] |
: docon: ( -- addr ) \ gforth |
: docon: ( -- addr ) \ gforth |
\G the code address of a @code{CONSTANT} |
\G the code address of a @code{CONSTANT} |
['] bl >code-address ; |
['] bl >code-address ; |
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[THEN] |
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: docol: ( -- addr ) \ gforth |
: docol: ( -- addr ) \ gforth |
\G the code address of a colon definition |
\G the code address of a colon definition |
['] docon: >code-address ; |
['] docol: >code-address ; |
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doer? :dovar [IF] |
: dovar: ( -- addr ) \ gforth |
: dovar: ( -- addr ) \ gforth |
\G the code address of a @code{CREATE}d word |
\G the code address of a @code{CREATE}d word |
['] udp >code-address ; |
['] udp >code-address ; |
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[THEN] |
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doer? :douser [IF] |
: douser: ( -- addr ) \ gforth |
: douser: ( -- addr ) \ gforth |
\G the code address of a @code{USER} variable |
\G the code address of a @code{USER} variable |
['] s0 >code-address ; |
['] s0 >code-address ; |
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[THEN] |
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doer? :dodefer [IF] |
: dodefer: ( -- addr ) \ gforth |
: dodefer: ( -- addr ) \ gforth |
\G the code address of a @code{defer}ed word |
\G the code address of a @code{defer}ed word |
['] source >code-address ; |
['] source >code-address ; |
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[THEN] |
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doer? :dofield [IF] |
: dofield: ( -- addr ) \ gforth |
: dofield: ( -- addr ) \ gforth |
\G the code address of a @code{field} |
\G the code address of a @code{field} |
['] reveal-method >code-address ; |
['] reveal-method >code-address ; |
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[THEN] |
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has-prims 0= [IF] |
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: dodoes: ( -- addr ) \ gforth |
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\G the code address of a @code{field} |
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['] spaces >code-address ; |
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[THEN] |
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NIL AConstant NIL \ gforth |
NIL AConstant NIL \ gforth |
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\ Aliases |
\ Aliases |
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' i Alias r@ |
' i Alias r@ ( -- w ; R: w -- w ) \ core r-fetch |
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\ copy w from the return stack to the data stack |
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\ Bit string manipulation 06oct92py |
\ Bit string manipulation 06oct92py |
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Line 96 NIL AConstant NIL \ gforth
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Line 113 NIL AConstant NIL \ gforth
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LOOP ; |
LOOP ; |
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\ !! this is machine-dependent, but works on all but the strangest machines |
\ !! this is machine-dependent, but works on all but the strangest machines |
' faligned Alias maxaligned ( addr1 -- addr2 ) \ gforth |
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' falign Alias maxalign ( -- ) \ gforth |
: maxaligned ( addr -- f-addr ) \ float |
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[ /maxalign 1 - ] Literal + [ 0 /maxalign - ] Literal and ; |
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: maxalign ( -- ) \ float |
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here dup maxaligned swap |
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?DO |
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bl c, |
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LOOP ; |
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\ !! machine-dependent and won't work if "0 >body" <> "0 >body maxaligned" |
\ !! machine-dependent and won't work if "0 >body" <> "0 >body maxaligned" |
' maxaligned Alias cfaligned ( addr1 -- addr2 ) \ gforth |
' maxaligned Alias cfaligned ( addr1 -- addr2 ) \ gforth |
Line 242 Defer source ( -- addr count ) \ core
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Line 265 Defer source ( -- addr count ) \ core
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: (compile) ( -- ) \ gforth |
: (compile) ( -- ) \ gforth |
r> dup cell+ >r @ compile, ; |
r> dup cell+ >r @ compile, ; |
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: postpone, ( w xt -- ) |
: postpone, ( w xt -- ) \ gforth postpone-comma |
\g Compiles the compilation semantics represented by @var{w xt}. |
\g Compiles the compilation semantics represented by @var{w xt}. |
dup ['] execute = |
dup ['] execute = |
if |
if |
Line 407 hex
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Line 430 hex
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: #s ( +d -- 0 0 ) \ core number-sign-s |
: #s ( +d -- 0 0 ) \ core number-sign-s |
BEGIN |
BEGIN |
# 2dup d0= |
# 2dup or 0= |
UNTIL ; |
UNTIL ; |
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\ print numbers 07jun92py |
\ print numbers 07jun92py |
Line 440 hex
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Line 463 hex
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\ !! allow the user to add rollback actions anton |
\ !! allow the user to add rollback actions anton |
\ !! use a separate exception stack? anton |
\ !! use a separate exception stack? anton |
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has-locals [IF] |
: lp@ ( -- addr ) \ gforth l-p-fetch |
: lp@ ( -- addr ) \ gforth l-p-fetch |
laddr# [ 0 , ] ; |
laddr# [ 0 , ] ; |
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[THEN] |
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Defer 'catch |
Defer 'catch |
Defer 'throw |
Defer 'throw |
Defer 'bounce |
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' noop IS 'catch |
' noop IS 'catch |
' noop IS 'throw |
' noop IS 'throw |
Line 453 Defer 'bounce
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Line 477 Defer 'bounce
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: catch ( x1 .. xn xt -- y1 .. ym 0 / z1 .. zn error ) \ exception |
: catch ( x1 .. xn xt -- y1 .. ym 0 / z1 .. zn error ) \ exception |
'catch |
'catch |
sp@ >r |
sp@ >r |
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[ has-floats [IF] ] |
fp@ >r |
fp@ >r |
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[ [THEN] ] |
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[ has-locals [IF] ] |
lp@ >r |
lp@ >r |
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[ [THEN] ] |
handler @ >r |
handler @ >r |
rp@ handler ! |
rp@ handler ! |
execute |
execute |
Line 462 Defer 'bounce
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Line 490 Defer 'bounce
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: throw ( y1 .. ym error/0 -- y1 .. ym / z1 .. zn error ) \ exception |
: throw ( y1 .. ym error/0 -- y1 .. ym / z1 .. zn error ) \ exception |
?DUP IF |
?DUP IF |
[ here 9 cells ! ] \ entry point for signal handler |
[ has-header [IF] here 9 cells ! [THEN] ] \ entry point for signal handler |
handler @ dup 0= IF |
handler @ dup 0= IF |
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[ has-os [IF] ] |
2 (bye) |
2 (bye) |
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[ [ELSE] ] |
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quit |
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[ [THEN] ] |
THEN |
THEN |
rp! |
rp! |
r> handler ! |
r> handler ! |
r> lp! |
[ has-locals [IF] ] |
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r> lp! |
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[ [THEN] ] |
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[ has-floats [IF] ] |
r> fp! |
r> fp! |
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[ [THEN] ] |
r> swap >r sp! drop r> |
r> swap >r sp! drop r> |
'throw |
'throw |
THEN ; |
THEN ; |
Line 481 Defer 'bounce
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Line 517 Defer 'bounce
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?DUP IF |
?DUP IF |
handler @ rp! |
handler @ rp! |
r> handler ! |
r> handler ! |
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[ has-locals [IF] ] |
r> lp! |
r> lp! |
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[ [THEN] ] |
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[ has-floats [IF] ] |
rdrop |
rdrop |
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[ [THEN] ] |
rdrop |
rdrop |
'throw |
'throw |
THEN ; |
THEN ; |
Line 491 Defer 'bounce
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Line 531 Defer 'bounce
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: ?stack ( ?? -- ?? ) \ gforth |
: ?stack ( ?? -- ?? ) \ gforth |
sp@ s0 @ u> IF -4 throw THEN |
sp@ s0 @ u> IF -4 throw THEN |
fp@ f0 @ u> IF -&45 throw THEN ; |
[ has-floats [IF] ] |
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fp@ f0 @ u> IF -&45 throw THEN |
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[ [THEN] ] |
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; |
\ ?stack should be code -- it touches an empty stack! |
\ ?stack should be code -- it touches an empty stack! |
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\ interpret 10mar92py |
\ interpret 10mar92py |
Line 705 Create ??? 0 , 3 c, char ? c, char ? c,
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Line 748 Create ??? 0 , 3 c, char ? c, char ? c,
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: !does ( addr -- ) \ gforth store-does |
: !does ( addr -- ) \ gforth store-does |
lastxt does-code! ; |
lastxt does-code! ; |
: (does>) ( R: addr -- ) |
: (does>) ( R: addr -- ) |
r> /does-handler + !does ; |
r> cfaligned /does-handler + !does ; |
: dodoes, ( -- ) |
: dodoes, ( -- ) |
here /does-handler allot does-handler! ; |
cfalign here /does-handler allot does-handler! ; |
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doer? :dovar [IF] |
: Create ( "name" -- ) \ core |
: Create ( "name" -- ) \ core |
Header reveal dovar: cfa, ; |
Header reveal dovar: cfa, ; |
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[ELSE] |
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: Create ( "name" -- ) \ core |
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Header reveal here lastcfa ! 0 A, 0 , DOES> ; |
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[THEN] |
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\ Create Variable User Constant 17mar93py |
\ Create Variable User Constant 17mar93py |
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Line 718 Create ??? 0 , 3 c, char ? c, char ? c,
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Line 766 Create ??? 0 , 3 c, char ? c, char ? c,
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Create 0 , ; |
Create 0 , ; |
: AVariable ( "name" -- ) \ gforth |
: AVariable ( "name" -- ) \ gforth |
Create 0 A, ; |
Create 0 A, ; |
: 2VARIABLE ( "name" -- ) \ double |
: 2Variable ( "name" -- ) \ double |
create 0 , 0 , ; |
create 0 , 0 , ; |
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: uallot ( n -- ) udp @ swap udp +! ; |
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doer? :douser [IF] |
: User ( "name" -- ) \ gforth |
: User ( "name" -- ) \ gforth |
Variable ; |
Header reveal douser: cfa, cell uallot , ; |
: AUser ( "name" -- ) \ gforth |
: AUser ( "name" -- ) \ gforth |
AVariable ; |
User ; |
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[ELSE] |
: (Constant) Header reveal docon: cfa, ; |
: User Create uallot , DOES> @ up @ + ; |
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: AUser User ; |
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[THEN] |
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doer? :docon [IF] |
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: (Constant) Header reveal docon: cfa, ; |
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[ELSE] |
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: (Constant) Create DOES> @ ; |
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[THEN] |
: Constant ( w "name" -- ) \ core |
: Constant ( w "name" -- ) \ core |
\G Defines constant @var{name} |
\G Defines constant @var{name} |
\G |
\G |
Line 734 Create ??? 0 , 3 c, char ? c, char ? c,
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Line 793 Create ??? 0 , 3 c, char ? c, char ? c,
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(Constant) , ; |
(Constant) , ; |
: AConstant ( addr "name" -- ) \ gforth |
: AConstant ( addr "name" -- ) \ gforth |
(Constant) A, ; |
(Constant) A, ; |
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: Value ( w "name" -- ) \ core-ext |
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(Constant) , ; |
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: 2Constant ( w1 w2 "name" -- ) \ double |
: 2Constant ( w1 w2 "name" -- ) \ double |
Create ( w1 w2 "name" -- ) |
Create ( w1 w2 "name" -- ) |
Line 741 Create ??? 0 , 3 c, char ? c, char ? c,
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Line 802 Create ??? 0 , 3 c, char ? c, char ? c,
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DOES> ( -- w1 w2 ) |
DOES> ( -- w1 w2 ) |
2@ ; |
2@ ; |
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doer? :dofield [IF] |
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: (Field) Header reveal dofield: cfa, ; |
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[ELSE] |
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: (Field) Create DOES> @ + ; |
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[THEN] |
\ IS Defer What's Defers TO 24feb93py |
\ IS Defer What's Defers TO 24feb93py |
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doer? :dodefer [IF] |
: Defer ( "name" -- ) \ gforth |
: Defer ( "name" -- ) \ gforth |
\ !! shouldn't it be initialized with abort or something similar? |
\ !! shouldn't it be initialized with abort or something similar? |
Header Reveal dodefer: cfa, |
Header Reveal dodefer: cfa, |
['] noop A, ; |
['] noop A, ; |
\ Create ( -- ) |
[ELSE] |
\ ['] noop A, |
: Defer ( "name" -- ) \ gforth |
\ DOES> ( ??? ) |
Create ['] noop A, |
\ perform ; |
DOES> @ execute ; |
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[THEN] |
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: Defers ( "name" -- ) \ gforth |
: Defers ( "name" -- ) \ gforth |
' >body @ compile, ; immediate |
' >body @ compile, ; immediate |
Line 894 end-struct interpret/compile-struct
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Line 962 end-struct interpret/compile-struct
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then |
then |
then ; |
then ; |
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: find ( c-addr -- xt +-1 / c-addr 0 ) \ core |
: find ( c-addr -- xt +-1 / c-addr 0 ) \ core,search |
dup count sfind dup |
dup count sfind dup |
if |
if |
rot drop |
rot drop |
Line 970 G -1 warnings T !
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Line 1038 G -1 warnings T !
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0C constant #ff ( -- c ) \ gforth |
0C constant #ff ( -- c ) \ gforth |
0A constant #lf ( -- c ) \ gforth |
0A constant #lf ( -- c ) \ gforth |
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: bell #bell emit ; |
: bell ( -- ) \ gforth |
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\g makes a beep and flushes the output buffer |
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#bell emit |
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outfile-id flush-file drop ; |
: cr ( -- ) \ core |
: cr ( -- ) \ core |
\ emit a newline |
\ emit a newline |
#lf ( sic! ) emit ; |
#lf ( sic! ) emit ; |
Line 983 G -1 warnings T !
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Line 1054 G -1 warnings T !
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dup IF |
dup IF |
#bs emit bl emit #bs emit 1- rot 1- -rot |
#bs emit bl emit #bs emit 1- rot 1- -rot |
THEN false ; |
THEN false ; |
: (ret) true space ; |
: (ret) true bl emit ; |
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Create ctrlkeys |
Create ctrlkeys |
] false false false false false false false false |
] false false false false false false false false |
Line 1006 defer everychar
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Line 1077 defer everychar
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: accept ( addr len -- len ) \ core |
: accept ( addr len -- len ) \ core |
dup 0< IF abs over dup 1 chars - c@ tuck type |
dup 0< IF abs over dup 1 chars - c@ tuck type |
\ this allows to edit given strings |
\ this allows to edit given strings |
ELSE 0 THEN rot over |
ELSE 0 THEN rot over |
BEGIN key decode UNTIL |
BEGIN key decode UNTIL |
2drop nip ; |
2drop nip ; |
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\ Output 13feb93py |
\ Output 13feb93py |
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has-os [IF] |
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0 Value outfile-id ( -- file-id ) \ gforth |
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: (type) ( c-addr u -- ) \ gforth |
: (type) ( c-addr u -- ) \ gforth |
outfile-id write-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ? |
outfile-id write-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ? |
; |
; |
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Defer type ( c-addr u -- ) \ core |
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\ defer type for a output buffer or fast |
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\ screen write |
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' (type) IS Type |
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: (emit) ( c -- ) \ gforth |
: (emit) ( c -- ) \ gforth |
outfile-id emit-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ? |
outfile-id emit-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ? |
; |
; |
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[THEN] |
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Defer type ( c-addr u -- ) \ core |
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' (type) IS Type |
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Defer emit ( c -- ) \ core |
Defer emit ( c -- ) \ core |
' (Emit) IS Emit |
' (Emit) IS Emit |
Line 1034 Defer key ( -- c ) \ core
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Line 1106 Defer key ( -- c ) \ core
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\ Query 07apr93py |
\ Query 07apr93py |
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has-files 0= [IF] |
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: sourceline# ( -- n ) loadline @ ; |
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[THEN] |
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: refill ( -- flag ) \ core-ext,block-ext,file-ext |
: refill ( -- flag ) \ core-ext,block-ext,file-ext |
blk @ IF 1 blk +! true 0 >in ! EXIT THEN |
blk @ IF 1 blk +! true 0 >in ! EXIT THEN |
tib /line |
tib /line |
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[ has-files [IF] ] |
loadfile @ ?dup |
loadfile @ ?dup |
IF read-line throw |
IF read-line throw |
ELSE sourceline# 0< IF 2drop false EXIT THEN |
ELSE |
accept true |
[ [THEN] ] |
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sourceline# 0< IF 2drop false EXIT THEN |
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accept true |
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[ has-files [IF] ] |
THEN |
THEN |
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[ [THEN] ] |
1 loadline +! |
1 loadline +! |
swap #tib ! 0 >in ! ; |
swap #tib ! 0 >in ! ; |
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Line 1052 Defer key ( -- c ) \ core
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Line 1133 Defer key ( -- c ) \ core
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\ save-mem extend-mem |
\ save-mem extend-mem |
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has-os [IF] |
: save-mem ( addr1 u -- addr2 u ) \ gforth |
: save-mem ( addr1 u -- addr2 u ) \ gforth |
\g copy a memory block into a newly allocated region in the heap |
\g copy a memory block into a newly allocated region in the heap |
swap >r |
swap >r |
Line 1063 Defer key ( -- c ) \ core
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Line 1145 Defer key ( -- c ) \ core
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\ the (possibly reallocated piece is addr2 u2, the extension is at addr |
\ the (possibly reallocated piece is addr2 u2, the extension is at addr |
over >r + dup >r resize throw |
over >r + dup >r resize throw |
r> over r> + -rot ; |
r> over r> + -rot ; |
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[THEN] |
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\ HEX DECIMAL 2may93jaw |
\ HEX DECIMAL 2may93jaw |
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Line 1096 Defer key ( -- c ) \ core
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Line 1179 Defer key ( -- c ) \ core
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\ EVALUATE 17may93jaw |
\ EVALUATE 17may93jaw |
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has-files 0= [IF] |
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: push-file ( -- ) r> |
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sourceline# >r tibstack @ >r >tib @ >r #tib @ >r |
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>tib @ tibstack @ = IF r@ tibstack +! THEN |
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tibstack @ >tib ! >in @ >r >r ; |
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: pop-file ( throw-code -- throw-code ) |
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r> |
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r> >in ! r> #tib ! r> >tib ! r> tibstack ! r> loadline ! >r ; |
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[THEN] |
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: evaluate ( c-addr len -- ) \ core,block |
: evaluate ( c-addr len -- ) \ core,block |
push-file #tib ! >tib ! |
push-file #tib ! >tib ! |
>in off blk off loadfile off -1 loadline ! |
>in off blk off loadfile off -1 loadline ! |
Line 1115 Defer .status
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Line 1209 Defer .status
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: prompt state @ IF ." compiled" EXIT THEN ." ok" ; |
: prompt state @ IF ." compiled" EXIT THEN ." ok" ; |
: (Query) ( -- ) |
: (Query) ( -- ) |
loadfile off blk off refill drop ; |
loadfile off blk off refill drop ; |
: (quit) BEGIN .status cr (query) interpret prompt AGAIN ; |
: (quit) BEGIN .status cr (query) interpret prompt AGAIN ; |
' (quit) IS 'quit |
' (quit) IS 'quit |
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\ DOERROR (DOERROR) 13jun93jaw |
\ DOERROR (DOERROR) 13jun93jaw |
Line 1171 DEFER DOERROR
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Line 1265 DEFER DOERROR
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; |
; |
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: (DoError) ( throw-code -- ) |
: (DoError) ( throw-code -- ) |
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[ has-os [IF] ] outfile-id >r stderr to outfile-id [ [THEN] ] |
sourceline# IF |
sourceline# IF |
source >in @ sourceline# 0 0 .error-frame |
source >in @ sourceline# 0 0 .error-frame |
THEN |
THEN |
Line 1192 DEFER DOERROR
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Line 1287 DEFER DOERROR
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ELSE |
ELSE |
.error |
.error |
THEN |
THEN |
normal-dp dpp ! ; |
normal-dp dpp ! |
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[ has-os [IF] ] r> to outfile-id [ [THEN] ] |
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; |
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' (DoError) IS DoError |
' (DoError) IS DoError |
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Line 1211 DEFER DOERROR
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Line 1308 DEFER DOERROR
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\ : .name ( name -- ) name>string type space ; |
\ : .name ( name -- ) name>string type space ; |
\ : words listwords @ |
\ : words listwords @ |
\ BEGIN @ dup WHILE dup .name REPEAT drop ; |
\ BEGIN @ dup WHILE dup .name REPEAT drop ; |
Defer 'cold ' noop IS 'cold |
Defer 'cold ( -- ) \ gforth tick-cold |
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\ hook (deferred word) for things to do right before interpreting the |
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\ command-line arguments |
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' noop IS 'cold |
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: cold ( -- ) \ gforth |
: cold ( -- ) \ gforth |
stdout TO outfile-id |
[ has-files [IF] ] |
pathstring 2@ process-path pathdirs 2! |
pathstring 2@ process-path pathdirs 2! |
init-included-files |
init-included-files |
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[ [THEN] ] |
'cold |
'cold |
argc @ 1 > |
[ has-files [IF] ] |
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['] process-args catch ?dup |
IF |
IF |
['] process-args catch ?dup |
dup >r DoError cr r> negate (bye) |
IF |
THEN |
dup >r DoError cr r> negate (bye) |
argc @ 1 > |
THEN |
IF \ there may be some unfinished line, so let's finish it |
cr |
cr |
THEN |
THEN |
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[ [THEN] ] |
." GForth " version-string type ." , Copyright (C) 1994-1996 Free Software Foundation, Inc." cr |
." GForth " version-string type ." , Copyright (C) 1994-1996 Free Software Foundation, Inc." cr |
." GForth comes with ABSOLUTELY NO WARRANTY; for details type `license'" cr |
." GForth comes with ABSOLUTELY NO WARRANTY; for details type `license'" |
." Type `bye' to exit" |
[ has-os [IF] ] |
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cr ." Type `bye' to exit" |
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[ [THEN] ] |
loadline off quit ; |
loadline off quit ; |
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: license ( -- ) \ gforth |
: license ( -- ) \ gforth |
Line 1248 Defer 'cold ' noop IS 'cold
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Line 1353 Defer 'cold ' noop IS 'cold
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." Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA." cr ; |
." Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA." cr ; |
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: boot ( path **argv argc -- ) |
: boot ( path **argv argc -- ) |
argc ! argv ! pathstring 2! main-task up! |
main-task up! |
sp@ s0 ! |
[ has-os [IF] ] |
lp@ forthstart 7 cells + @ - dup >tib ! tibstack ! #tib off >in off |
stdout TO outfile-id |
rp@ r0 ! |
[ [THEN] ] |
fp@ f0 ! |
[ has-files [IF] ] |
['] cold catch DoError |
argc ! argv ! pathstring 2! |
bye ; |
[ [THEN] ] |
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sp@ s0 ! |
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[ has-locals [IF] ] |
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lp@ forthstart 7 cells + @ - |
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[ [ELSE] ] |
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[ has-os [IF] ] |
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sp@ $1040 + |
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[ [ELSE] ] |
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sp@ $40 + |
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[ [THEN] ] |
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[ [THEN] ] |
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dup >tib ! tibstack ! #tib off >in off |
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rp@ r0 ! |
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[ has-floats [IF] ] |
|
fp@ f0 ! |
|
[ [THEN] ] |
|
['] cold catch DoError |
|
[ has-os [IF] ] |
|
bye |
|
[ [THEN] ] |
|
; |
|
|
|
has-os [IF] |
: bye ( -- ) \ tools-ext |
: bye ( -- ) \ tools-ext |
script? 0= IF cr THEN 0 (bye) ; |
[ has-files [IF] ] |
|
script? 0= IF cr THEN |
|
[ [ELSE] ] |
|
cr |
|
[ [THEN] ] |
|
0 (bye) ; |
|
[THEN] |
|
|
\ **argv may be scanned by the C starter to get some important |
\ **argv may be scanned by the C starter to get some important |
\ information, as -display and -geometry for an X client FORTH |
\ information, as -display and -geometry for an X client FORTH |