version 1.12, 1997/02/01 14:59:31
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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 |
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' 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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\ Create bits 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c, |
\ Create bits 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c, |
Line 92 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 152 $20 constant restrict-mask
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Line 179 $20 constant restrict-mask
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: bounds ( beg count -- end beg ) \ gforth |
: bounds ( beg count -- end beg ) \ gforth |
over + swap ; |
over + swap ; |
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: save-mem ( addr1 u -- addr2 u ) \ gforth |
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\g copy a memory block into a newly allocated region in the heap |
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swap >r |
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dup allocate throw |
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swap 2dup r> -rot move ; |
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: extend-mem ( addr1 u1 u -- addr addr2 u2 ) |
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\ extend memory block allocated from the heap by u aus |
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\ the (possibly reallocated piece is addr2 u2, the extension is at addr |
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over >r + dup >r resize throw |
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r> over r> + -rot ; |
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\ input stream primitives 23feb93py |
\ input stream primitives 23feb93py |
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: tib ( -- c-addr ) \ core-ext |
: tib ( -- c-addr ) \ core-ext |
Line 250 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 415 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 448 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 |
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Defer 'throw |
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' noop IS 'catch |
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' noop IS 'throw |
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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 |
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'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 hex
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Line 490 hex
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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> |
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'throw |
THEN ; |
THEN ; |
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\ Bouncing is very fine, |
\ Bouncing is very fine, |
Line 480 hex
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Line 517 hex
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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 |
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'throw |
THEN ; |
THEN ; |
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\ ?stack 23feb93py |
\ ?stack 23feb93py |
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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 572 Defer interpreter-notfound ( c-addr coun
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Line 617 Defer interpreter-notfound ( c-addr coun
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: SLiteral ( Compilation c-addr1 u ; run-time -- c-addr2 u ) \ string |
: SLiteral ( Compilation c-addr1 u ; run-time -- c-addr2 u ) \ string |
postpone (S") here over char+ allot place align ; |
postpone (S") here over char+ allot place align ; |
immediate restrict |
immediate restrict |
: plain-( ( 'ccc<close-paren>' -- ; ) |
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[char] ) parse 2drop ; |
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: file-( ( 'ccc<close-paren>' -- ; ) |
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BEGIN |
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>in @ |
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[char] ) parse nip |
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>in @ rot - = \ is there no delimter? |
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WHILE |
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refill 0= |
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IF |
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warnings @ |
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IF |
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." warning: ')' missing" cr |
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THEN |
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EXIT |
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THEN |
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REPEAT ; |
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: ( ( compilation 'ccc<close-paren>' -- ; run-time -- ) \ core,file paren |
: ( ( compilation 'ccc<close-paren>' -- ; run-time -- ) \ core,file paren |
loadfile @ |
[char] ) parse 2drop ; immediate |
IF |
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file-( |
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ELSE |
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plain-( |
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THEN ; immediate |
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: \ ( -- ) \ core-ext backslash |
: \ ( -- ) \ core-ext backslash |
blk @ |
blk @ |
Line 727 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 740 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 756 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 763 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 916 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 992 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 1005 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 1028 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 1056 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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: query ( -- ) \ core-ext |
: query ( -- ) \ core-ext |
\G obsolescent |
\G obsolescent |
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blk off loadfile off |
tib /line accept #tib ! 0 >in ! ; |
tib /line accept #tib ! 0 >in ! ; |
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\ File specifiers 11jun93jaw |
\ save-mem extend-mem |
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\ 1 c, here char r c, 0 c, 0 c, 0 c, char b c, 0 c, |
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\ 2 c, here char r c, char + c, 0 c, |
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\ 2 c, here char w c, char + c, 0 c, align |
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4 Constant w/o ( -- fam ) \ file w-o |
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2 Constant r/w ( -- fam ) \ file r-w |
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0 Constant r/o ( -- fam ) \ file r-o |
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\ BIN WRITE-LINE 11jun93jaw |
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\ : bin dup 1 chars - c@ |
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\ r/o 4 chars + over - dup >r swap move r> ; |
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: bin ( fam1 -- fam2 ) \ file |
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1 or ; |
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: write-line ( c-addr u fileid -- ior ) \ file |
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dup >r write-file |
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?dup IF |
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r> drop EXIT |
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THEN |
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#lf r> emit-file ; |
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\ include-file 07apr93py |
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: push-file ( -- ) r> |
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sourceline# >r loadfile @ >r |
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blk @ >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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dup IF |
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source >in @ sourceline# sourcefilename |
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error-stack dup @ dup 1+ |
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max-errors 1- min error-stack ! |
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6 * cells + cell+ |
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5 cells bounds swap DO |
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I ! |
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-1 cells +LOOP |
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THEN |
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r> |
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r> >in ! r> #tib ! r> >tib ! r> tibstack ! r> blk ! |
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r> loadfile ! r> loadline ! >r ; |
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: read-loop ( i*x -- j*x ) |
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BEGIN refill WHILE interpret REPEAT ; |
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: include-file ( i*x fid -- j*x ) \ file |
has-os [IF] |
push-file loadfile ! |
: save-mem ( addr1 u -- addr2 u ) \ gforth |
0 loadline ! blk off ['] read-loop catch |
\g copy a memory block into a newly allocated region in the heap |
loadfile @ close-file swap 2dup or |
swap >r |
pop-file drop throw throw ; |
dup allocate throw |
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swap 2dup r> -rot move ; |
create pathfilenamebuf 256 chars allot \ !! make this grow on demand |
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\ : check-file-prefix ( addr len -- addr' len' flag ) |
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\ dup 0= IF true EXIT THEN |
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\ over c@ '/ = IF true EXIT THEN |
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\ over 2 S" ./" compare 0= IF true EXIT THEN |
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\ over 3 S" ../" compare 0= IF true EXIT THEN |
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\ over 2 S" ~/" compare 0= |
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\ IF 1 /string |
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\ S" HOME" getenv tuck pathfilenamebuf swap move |
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\ 2dup + >r pathfilenamebuf + swap move |
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\ pathfilenamebuf r> true |
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\ ELSE false |
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\ THEN ; |
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: absolut-path? ( addr u -- flag ) \ gforth |
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\G a path is absolute, if it starts with a / or a ~ (~ expansion), |
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\G or if it is in the form ./* or ../*, extended regexp: ^[/~]|./|../ |
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\G Pathes simply containing a / are not absolute! |
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over c@ '/ = >r |
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over c@ '~ = >r |
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2dup 2 min S" ./" compare 0= >r |
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3 min S" ../" compare 0= |
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r> r> r> or or or ; |
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\ [char] / scan nip 0<> ; |
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: open-path-file ( c-addr1 u1 -- file-id c-addr2 u2 ) \ gforth |
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\G opens a file for reading, searching in the path for it (unless |
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\G the filename contains a slash); c-addr2 u2 is the full filename |
|
\G (valid until the next call); if the file is not found (or in |
|
\G case of other errors for each try), -38 (non-existant file) is |
|
\G thrown. Opening for other access modes makes little sense, as |
|
\G the path will usually contain dirs that are only readable for |
|
\G the user |
|
\ !! use file-status to determine access mode? |
|
2dup absolut-path? |
|
if \ the filename contains a slash |
|
2dup r/o open-file throw ( c-addr1 u1 file-id ) |
|
-rot >r pathfilenamebuf r@ cmove ( file-id R: u1 ) |
|
pathfilenamebuf r> EXIT |
|
then |
|
pathdirs 2@ 0 |
|
\ check-file-prefix 0= |
|
\ IF pathdirs 2@ 0 |
|
?DO ( c-addr1 u1 dirnamep ) |
|
dup >r 2@ dup >r pathfilenamebuf swap cmove ( addr u ) |
|
2dup pathfilenamebuf r@ chars + swap cmove ( addr u ) |
|
pathfilenamebuf over r> + dup >r r/o open-file 0= |
|
IF ( addr u file-id ) |
|
nip nip r> rdrop 0 LEAVE |
|
THEN |
|
rdrop drop r> cell+ cell+ |
|
LOOP |
|
\ ELSE 2dup open-file throw -rot THEN |
|
0<> -&38 and throw ( file-id u2 ) |
|
pathfilenamebuf swap ; |
|
|
|
create included-files 0 , 0 , ( pointer to and count of included files ) |
|
here ," the terminal" dup c@ swap 1 + swap , A, here 2 cells - |
|
create image-included-files 1 , A, ( pointer to and count of included files ) |
|
\ included-files points to ALLOCATEd space, while image-included-files |
|
\ points to ALLOTed objects, so it survives a save-system |
|
|
|
: loadfilename ( -- a-addr ) |
|
\G a-addr 2@ produces the current file name ( c-addr u ) |
|
included-files 2@ drop loadfilename# @ 2* cells + ; |
|
|
|
: sourcefilename ( -- c-addr u ) \ gforth |
|
\G the name of the source file which is currently the input |
|
\G source. The result is valid only while the file is being |
|
\G loaded. If the current input source is no (stream) file, the |
|
\G result is undefined. |
|
loadfilename 2@ ; |
|
|
|
: sourceline# ( -- u ) \ gforth sourceline-number |
|
\G the line number of the line that is currently being interpreted |
|
\G from a (stream) file. The first line has the number 1. If the |
|
\G current input source is no (stream) file, the result is |
|
\G undefined. |
|
loadline @ ; |
|
|
|
: init-included-files ( -- ) |
|
image-included-files 2@ 2* cells save-mem drop ( addr ) |
|
image-included-files 2@ nip included-files 2! ; |
|
|
|
: included? ( c-addr u -- f ) \ gforth |
|
\G true, iff filename c-addr u is in included-files |
|
included-files 2@ 0 |
|
?do ( c-addr u addr ) |
|
dup >r 2@ 2over compare 0= |
|
if |
|
2drop rdrop unloop |
|
true EXIT |
|
then |
|
r> cell+ cell+ |
|
loop |
|
2drop drop false ; |
|
|
|
: add-included-file ( c-addr u -- ) \ gforth |
|
\G add name c-addr u to included-files |
|
included-files 2@ 2* cells 2 cells extend-mem |
|
2/ cell / included-files 2! |
|
2! ; |
|
\ included-files 2@ tuck 1+ 2* cells resize throw |
|
\ swap 2dup 1+ included-files 2! |
|
\ 2* cells + 2! ; |
|
|
|
: included1 ( i*x file-id c-addr u -- j*x ) \ gforth |
|
\G include the file file-id with the name given by c-addr u |
|
loadfilename# @ >r |
|
save-mem add-included-file ( file-id ) |
|
included-files 2@ nip 1- loadfilename# ! |
|
['] include-file catch |
|
r> loadfilename# ! |
|
throw ; |
|
|
|
: included ( i*x addr u -- j*x ) \ file |
|
open-path-file included1 ; |
|
|
|
: required ( i*x addr u -- j*x ) \ gforth |
: extend-mem ( addr1 u1 u -- addr addr2 u2 ) |
\G include the file with the name given by addr u, if it is not |
\ extend memory block allocated from the heap by u aus |
\G included already. Currently this works by comparing the name of |
\ the (possibly reallocated piece is addr2 u2, the extension is at addr |
\G the file (with path) against the names of earlier included |
over >r + dup >r resize throw |
\G files; however, it would probably be better to fstat the file, |
r> over r> + -rot ; |
\G and compare the device and inode. The advantages would be: no |
[THEN] |
\G problems with several paths to the same file (e.g., due to |
|
\G links) and we would catch files included with include-file and |
|
\G write a require-file. |
|
open-path-file 2dup included? |
|
if |
|
2drop close-file throw |
|
else |
|
included1 |
|
then ; |
|
|
|
\ HEX DECIMAL 2may93jaw |
\ HEX DECIMAL 2may93jaw |
|
|
Line 1276 create image-included-files 1 , A, ( po
|
Line 1161 create image-included-files 1 , A, ( po
|
: clearstack ( ... -- ) |
: clearstack ( ... -- ) |
s0 @ sp! ; |
s0 @ sp! ; |
|
|
\ INCLUDE 9may93jaw |
|
|
|
: include ( "file" -- ) \ gforth |
|
name included ; |
|
|
|
: require ( "file" -- ) \ gforth |
|
name required ; |
|
|
|
\ RECURSE 17may93jaw |
\ RECURSE 17may93jaw |
|
|
: recurse ( compilation -- ; run-time ?? -- ?? ) \ core |
: recurse ( compilation -- ; run-time ?? -- ?? ) \ core |
Line 1302 create image-included-files 1 , A, ( po
|
Line 1179 create image-included-files 1 , A, ( po
|
|
|
\ EVALUATE 17may93jaw |
\ EVALUATE 17may93jaw |
|
|
|
has-files 0= [IF] |
|
: push-file ( -- ) r> |
|
sourceline# >r tibstack @ >r >tib @ >r #tib @ >r |
|
>tib @ tibstack @ = IF r@ tibstack +! THEN |
|
tibstack @ >tib ! >in @ >r >r ; |
|
|
|
: pop-file ( throw-code -- throw-code ) |
|
r> |
|
r> >in ! r> #tib ! r> >tib ! r> tibstack ! r> loadline ! >r ; |
|
[THEN] |
|
|
: 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 1321 Defer .status
|
Line 1209 Defer .status
|
: 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 |
|
|
\ DOERROR (DOERROR) 13jun93jaw |
\ DOERROR (DOERROR) 13jun93jaw |
Line 1377 DEFER DOERROR
|
Line 1265 DEFER DOERROR
|
; |
; |
|
|
: (DoError) ( throw-code -- ) |
: (DoError) ( throw-code -- ) |
|
[ 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 1398 DEFER DOERROR
|
Line 1287 DEFER DOERROR
|
ELSE |
ELSE |
.error |
.error |
THEN |
THEN |
normal-dp dpp ! ; |
normal-dp dpp ! |
|
[ has-os [IF] ] r> to outfile-id [ [THEN] ] |
|
; |
|
|
' (DoError) IS DoError |
' (DoError) IS DoError |
|
|
Line 1417 DEFER DOERROR
|
Line 1308 DEFER DOERROR
|
\ : .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 ( -- ) \ gforth tick-cold |
: cstring>sstring ( cstring -- addr n ) \ gforth cstring-to-sstring |
\ hook (deferred word) for things to do right before interpreting the |
-1 0 scan 0 swap 1+ /string ; |
\ command-line arguments |
: arg ( n -- addr count ) \ gforth |
' noop IS 'cold |
cells argv @ + @ cstring>sstring ; |
|
: #! postpone \ ; immediate |
|
|
|
Create pathstring 2 cells allot \ string |
|
Create pathdirs 2 cells allot \ dir string array, pointer and count |
|
Variable argv |
|
Variable argc |
|
|
|
0 Value script? ( -- flag ) |
|
|
|
: process-path ( addr1 u1 -- addr2 u2 ) |
|
\ addr1 u1 is a path string, addr2 u2 is an array of dir strings |
|
align here >r |
|
BEGIN |
|
over >r 0 scan |
|
over r> tuck - ( rest-str this-str ) |
|
dup |
|
IF |
|
2dup 1- chars + c@ [char] / <> |
|
IF |
|
2dup chars + [char] / swap c! |
|
1+ |
|
THEN |
|
2, |
|
ELSE |
|
2drop |
|
THEN |
|
dup |
|
WHILE |
|
1 /string |
|
REPEAT |
|
2drop |
|
here r> tuck - 2 cells / ; |
|
|
|
: do-option ( addr1 len1 addr2 len2 -- n ) |
|
2swap |
|
2dup s" -e" compare 0= >r |
|
2dup s" --evaluate" compare 0= r> or |
|
IF 2drop dup >r ['] evaluate catch |
|
?dup IF dup >r DoError r> negate (bye) THEN |
|
r> >tib +! 2 EXIT THEN |
|
." Unknown option: " type cr 2drop 1 ; |
|
|
|
: process-args ( -- ) |
|
>tib @ >r |
|
argc @ 1 |
|
?DO |
|
I arg over c@ [char] - <> |
|
IF |
|
required 1 |
|
ELSE |
|
I 1+ argc @ = IF s" " ELSE I 1+ arg THEN |
|
do-option |
|
THEN |
|
+LOOP |
|
r> >tib ! ; |
|
|
|
Defer 'cold ' noop IS 'cold |
|
|
|
: 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 |
|
[ [THEN] ] |
'cold |
'cold |
argc @ 1 > |
[ has-files [IF] ] |
|
['] process-args catch ?dup |
IF |
IF |
true to script? |
dup >r DoError cr r> negate (bye) |
['] process-args catch ?dup |
THEN |
IF |
argc @ 1 > |
dup >r DoError cr r> negate (bye) |
IF \ there may be some unfinished line, so let's finish it |
THEN |
|
cr |
cr |
THEN |
THEN |
false to script? |
[ [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] ] |
|
cr ." Type `bye' to exit" |
|
[ [THEN] ] |
loadline off quit ; |
loadline off quit ; |
|
|
: license ( -- ) \ gforth |
: license ( -- ) \ gforth |
Line 1517 Defer 'cold ' noop IS 'cold
|
Line 1353 Defer 'cold ' noop IS 'cold
|
." Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA." cr ; |
." Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA." cr ; |
|
|
: 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] ] |
|
sp@ s0 ! |
|
[ has-locals [IF] ] |
|
lp@ forthstart 7 cells + @ - |
|
[ [ELSE] ] |
|
[ has-os [IF] ] |
|
sp@ $1040 + |
|
[ [ELSE] ] |
|
sp@ $40 + |
|
[ [THEN] ] |
|
[ [THEN] ] |
|
dup >tib ! tibstack ! #tib off >in off |
|
rp@ r0 ! |
|
[ 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 |