version 1.40, 1995/09/06 21:00:21
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version 1.43, 1995/10/16 18:33:11
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Line 1
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\ KERNAL.FS GNU FORTH kernal 17dec92py |
\ KERNAL.FS GForth kernal 17dec92py |
\ $ID: |
\ $ID: |
\ Idea and implementation: Bernd Paysan (py) |
\ Idea and implementation: Bernd Paysan (py) |
\ Copyright 1992 by the ANSI figForth Development Group |
\ Copyright 1992 by the ANSI figForth Development Group |
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Line 31
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HEX |
HEX |
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\ labels for some code addresses |
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: docon: ( -- addr ) \ gforth |
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\ the code address of a @code{CONSTANT} |
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['] bl >code-address ; |
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: docol: ( -- addr ) \ gforth |
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\ the code address of a colon definition |
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['] docon: >code-address ; |
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: dovar: ( -- addr ) \ gforth |
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\ the code address of a @code{CREATE}d word |
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['] udp >code-address ; |
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: douser: ( -- addr ) \ gforth |
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\ the code address of a @code{USER} variable |
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['] s0 >code-address ; |
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: dodefer: ( -- addr ) \ gforth |
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\ the code address of a @code{defer}ed word |
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['] source >code-address ; |
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: dofield: ( -- addr ) \ gforth |
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\ the code address of a @code{field} |
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['] reveal-method >code-address ; |
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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 45 DOES> ( n -- ) + c@ ;
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Line 71 DOES> ( n -- ) + c@ ;
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\ here allot , c, A, 17dec92py |
\ here allot , c, A, 17dec92py |
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: dp ( -- addr ) dpp @ ; |
: dp ( -- addr ) \ gforth |
: here ( -- here ) dp @ ; |
dpp @ ; |
: allot ( n -- ) dp +! ; |
: here ( -- here ) \ core |
: c, ( c -- ) here 1 chars allot c! ; |
dp @ ; |
: , ( x -- ) here cell allot ! ; |
: allot ( n -- ) \ core |
: 2, ( w1 w2 -- ) \ general |
dp +! ; |
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: c, ( c -- ) \ core |
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here 1 chars allot c! ; |
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: , ( x -- ) \ core |
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here cell allot ! ; |
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: 2, ( w1 w2 -- ) \ gforth |
here 2 cells allot 2! ; |
here 2 cells allot 2! ; |
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: aligned ( addr -- addr' ) |
: aligned ( addr -- addr' ) \ core |
[ cell 1- ] Literal + [ -1 cells ] Literal and ; |
[ cell 1- ] Literal + [ -1 cells ] Literal and ; |
: align ( -- ) here dup aligned swap ?DO bl c, LOOP ; |
: align ( -- ) \ core |
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here dup aligned swap ?DO bl c, LOOP ; |
: faligned ( addr -- f-addr ) |
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[ 1 floats 1- ] Literal + [ -1 floats ] Literal and ; |
: faligned ( addr -- f-addr ) \ float |
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[ 1 floats 1- ] Literal + [ -1 floats ] Literal and ; |
: falign ( -- ) |
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here dup faligned swap |
: falign ( -- ) \ float |
?DO |
here dup faligned swap |
bl c, |
?DO |
LOOP ; |
bl c, |
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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 |
' faligned Alias maxaligned ( addr1 -- addr2 ) \ gforth |
' falign Alias maxalign |
' falign Alias maxalign ( -- ) \ gforth |
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\ the code field is aligned if its body is maxaligned |
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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 |
' maxaligned Alias cfaligned ( addr1 -- addr2 ) \ gforth |
' maxalign Alias cfalign |
\ the code field is aligned if its body is maxaligned |
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' maxalign Alias cfalign ( -- ) \ gforth |
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: chars ; immediate |
: chars ( n1 -- n2 ) \ core |
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; immediate |
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: A! ( addr1 addr2 -- ) dup relon ! ; |
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: A, ( addr -- ) here cell allot A! ; |
: A! ( addr1 addr2 -- ) \ gforth |
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dup relon ! ; |
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: A, ( addr -- ) \ gforth |
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here cell allot A! ; |
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\ on off 23feb93py |
\ on off 23feb93py |
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: on ( addr -- ) true swap ! ; |
: on ( addr -- ) \ gforth |
: off ( addr -- ) false swap ! ; |
true swap ! ; |
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: off ( addr -- ) \ gforth |
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false swap ! ; |
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\ name> found 17dec92py |
\ name> found 17dec92py |
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: (name>) ( nfa -- cfa ) |
: (name>) ( nfa -- cfa ) |
count $1F and + cfaligned ; |
count $1F and + cfaligned ; |
: name> ( nfa -- cfa ) |
: name> ( nfa -- cfa ) \ gforth |
cell+ |
cell+ |
dup (name>) swap c@ $80 and 0= IF @ THEN ; |
dup (name>) swap c@ $80 and 0= IF @ THEN ; |
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: found ( nfa -- cfa n ) cell+ |
: found ( nfa -- cfa n ) \ gforth |
dup c@ >r (name>) r@ $80 and 0= IF @ THEN |
cell+ |
-1 r@ $40 and IF 1- THEN |
dup c@ >r (name>) r@ $80 and 0= IF @ THEN |
r> $20 and IF negate THEN ; |
-1 r@ $40 and IF 1- THEN |
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r> $20 and IF negate THEN ; |
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\ (find) 17dec92py |
\ (find) 17dec92py |
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Line 109 DOES> ( n -- ) + c@ ;
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Line 148 DOES> ( n -- ) + c@ ;
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\ place bounds 13feb93py |
\ place bounds 13feb93py |
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: place ( addr len to -- ) over >r rot over 1+ r> move c! ; |
: place ( addr len to -- ) \ gforth |
: bounds ( beg count -- end beg ) over + swap ; |
over >r rot over 1+ r> move c! ; |
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: bounds ( beg count -- end beg ) \ gforth |
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over + swap ; |
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\ input stream primitives 23feb93py |
\ input stream primitives 23feb93py |
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: tib >tib @ ; |
: tib ( -- c-addr ) \ core-ext |
Defer source |
\ obsolescent |
: (source) ( -- addr count ) tib #tib @ ; |
>tib @ ; |
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Defer source ( -- addr count ) \ core |
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\ used by dodefer:, must be defer |
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: (source) ( -- addr count ) |
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tib #tib @ ; |
' (source) IS source |
' (source) IS source |
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\ (word) 22feb93py |
\ (word) 22feb93py |
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: scan ( addr1 n1 char -- addr2 n2 ) |
: scan ( addr1 n1 char -- addr2 n2 ) \ gforth |
\ skip all characters not equal to char |
\ skip all characters not equal to char |
>r |
>r |
BEGIN |
BEGIN |
Line 132 Defer source
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Line 177 Defer source
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1 /string |
1 /string |
REPEAT THEN |
REPEAT THEN |
rdrop ; |
rdrop ; |
: skip ( addr1 n1 char -- addr2 n2 ) |
: skip ( addr1 n1 char -- addr2 n2 ) \ gforth |
\ skip all characters equal to char |
\ skip all characters equal to char |
>r |
>r |
BEGIN |
BEGIN |
Line 152 Defer source
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Line 197 Defer source
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\ word parse 23feb93py |
\ word parse 23feb93py |
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: parse-word ( char -- addr len ) |
: parse-word ( char -- addr len ) \ gforth |
source 2dup >r >r >in @ over min /string |
source 2dup >r >r >in @ over min /string |
rot dup bl = IF drop (parse-white) ELSE (word) THEN |
rot dup bl = IF drop (parse-white) ELSE (word) THEN |
2dup + r> - 1+ r> min >in ! ; |
2dup + r> - 1+ r> min >in ! ; |
: word ( char -- addr ) |
: word ( char -- addr ) \ core |
parse-word here place bl here count + c! here ; |
parse-word here place bl here count + c! here ; |
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: parse ( char -- addr len ) |
: parse ( char -- addr len ) \ core-ext |
>r source >in @ over min /string over swap r> scan >r |
>r source >in @ over min /string over swap r> scan >r |
over - dup r> IF 1+ THEN >in +! ; |
over - dup r> IF 1+ THEN >in +! ; |
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\ name 13feb93py |
\ name 13feb93py |
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: capitalize ( addr len -- addr len ) |
: capitalize ( addr len -- addr len ) \ gforth |
2dup chars chars bounds |
2dup chars chars bounds |
?DO I c@ toupper I c! 1 chars +LOOP ; |
?DO I c@ toupper I c! 1 chars +LOOP ; |
: (name) ( -- c-addr count ) |
: (name) ( -- c-addr count ) |
Line 181 Defer source
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Line 226 Defer source
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\ Literal 17dec92py |
\ Literal 17dec92py |
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: Literal ( n -- ) state @ IF postpone lit , THEN ; |
: Literal ( compilation n -- ; run-time -- n ) \ core |
immediate |
state @ IF postpone lit , THEN ; immediate |
: ALiteral ( n -- ) state @ IF postpone lit A, THEN ; |
: ALiteral ( compilation addr -- ; run-time -- addr ) \ gforth |
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state @ IF postpone lit A, THEN ; |
immediate |
immediate |
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: char ( 'char' -- n ) bl word char+ c@ ; |
: char ( 'char' -- n ) \ core |
: [char] ( 'char' -- n ) char postpone Literal ; immediate |
bl word char+ c@ ; |
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: [char] ( compilation 'char' -- ; run-time -- n ) |
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char postpone Literal ; immediate |
' [char] Alias Ascii immediate |
' [char] Alias Ascii immediate |
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: (compile) ( -- ) r> dup cell+ >r @ compile, ; |
: (compile) ( -- ) \ gforth |
: postpone ( "name" -- ) |
r> dup cell+ >r @ compile, ; |
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: postpone ( "name" -- ) \ core |
name sfind dup 0= abort" Can't compile " |
name sfind dup 0= abort" Can't compile " |
0> IF compile, ELSE postpone (compile) A, THEN ; |
0> IF compile, ELSE postpone (compile) A, THEN ; |
immediate restrict |
immediate restrict |
Line 200 Defer source
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Line 249 Defer source
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\ digit? 17dec92py |
\ digit? 17dec92py |
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: digit? ( char -- digit true/ false ) |
: digit? ( char -- digit true/ false ) \ gforth |
base @ $100 = |
base @ $100 = |
IF |
IF |
true EXIT |
true EXIT |
Line 218 Defer source
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Line 267 Defer source
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: accumulate ( +d0 addr digit - +d1 addr ) |
: accumulate ( +d0 addr digit - +d1 addr ) |
swap >r swap base @ um* drop rot base @ um* d+ r> ; |
swap >r swap base @ um* drop rot base @ um* d+ r> ; |
: >number ( d addr count -- d addr count ) |
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0 ?DO count digit? WHILE accumulate LOOP 0 |
: >number ( d addr count -- d addr count ) \ core |
ELSE 1- I' I - UNLOOP THEN ; |
0 |
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?DO |
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count digit? |
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WHILE |
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accumulate |
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LOOP |
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0 |
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ELSE |
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1- I' I - |
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UNLOOP |
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THEN ; |
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\ number? number 23feb93py |
\ number? number 23feb93py |
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Create bases 10 , 2 , A , 100 , |
Create bases 10 , 2 , A , 100 , |
\ 16 2 10 Zeichen |
\ 16 2 10 Zeichen |
\ !! this saving and restoring base is an abomination! - anton |
\ !! this saving and restoring base is an abomination! - anton |
: getbase ( addr u -- addr' u' ) over c@ [char] $ - dup 4 u< |
: getbase ( addr u -- addr' u' ) |
IF cells bases + @ base ! 1 /string ELSE drop THEN ; |
over c@ [char] $ - dup 4 u< |
: s>number ( addr len -- d ) base @ >r dpl on |
IF |
over c@ '- = dup >r IF 1 /string THEN |
cells bases + @ base ! 1 /string |
getbase dpl on 0 0 2swap |
ELSE |
BEGIN dup >r >number dup WHILE dup r> - WHILE |
drop |
dup dpl ! over c@ [char] . = WHILE |
THEN ; |
1 /string |
: s>number ( addr len -- d ) |
REPEAT THEN 2drop rdrop dpl off ELSE |
base @ >r dpl on |
2drop rdrop r> IF dnegate THEN |
over c@ '- = dup >r |
THEN r> base ! ; |
IF |
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1 /string |
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THEN |
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getbase dpl on 0 0 2swap |
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BEGIN |
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dup >r >number dup |
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WHILE |
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dup r> - |
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WHILE |
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dup dpl ! over c@ [char] . = |
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WHILE |
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1 /string |
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REPEAT THEN |
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2drop rdrop dpl off |
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ELSE |
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2drop rdrop r> |
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IF |
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dnegate |
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THEN |
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THEN |
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r> base ! ; |
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: snumber? ( c-addr u -- 0 / n -1 / d 0> ) |
: snumber? ( c-addr u -- 0 / n -1 / d 0> ) |
s>number dpl @ 0= |
s>number dpl @ 0= |
IF |
IF |
Line 252 Create bases 10 , 2 , A , 100 ,
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Line 332 Create bases 10 , 2 , A , 100 ,
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else |
else |
r> swap |
r> swap |
then ; |
then ; |
: s>d ( n -- d ) dup 0< ; |
: s>d ( n -- d ) \ core s-to-d |
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dup 0< ; |
: number ( string -- d ) |
: number ( string -- d ) |
number? ?dup 0= abort" ?" 0< IF s>d THEN ; |
number? ?dup 0= abort" ?" 0< |
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IF |
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s>d |
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THEN ; |
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\ space spaces ud/mod 21mar93py |
\ space spaces ud/mod 21mar93py |
decimal |
decimal |
Create spaces bl 80 times \ times from target compiler! 11may93jaw |
Create spaces ( u -- ) \ core |
DOES> ( u -- ) swap |
bl 80 times \ times from target compiler! 11may93jaw |
0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ; |
DOES> ( u -- ) |
Create backspaces 08 80 times \ times from target compiler! 11may93jaw |
swap |
DOES> ( u -- ) swap |
0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ; |
0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ; |
Create backspaces |
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08 80 times \ times from target compiler! 11may93jaw |
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DOES> ( u -- ) |
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swap |
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0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ; |
hex |
hex |
: space 1 spaces ; |
: space ( -- ) \ core |
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1 spaces ; |
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: ud/mod ( ud1 u2 -- urem udquot ) >r 0 r@ um/mod r> swap >r |
: ud/mod ( ud1 u2 -- urem udquot ) \ gforth |
um/mod r> ; |
>r 0 r@ um/mod r> swap >r |
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um/mod r> ; |
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: pad ( -- addr ) |
: pad ( -- addr ) \ core-ext |
here [ $20 8 2* cells + 2 + cell+ ] Literal + aligned ; |
here [ $20 8 2* cells + 2 + cell+ ] Literal + aligned ; |
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\ hold <# #> sign # #s 25jan92py |
\ hold <# #> sign # #s 25jan92py |
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: hold ( char -- ) pad cell - -1 chars over +! @ c! ; |
: hold ( char -- ) \ core |
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pad cell - -1 chars over +! @ c! ; |
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: <# pad cell - dup ! ; |
: <# ( -- ) \ core less-number-sign |
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pad cell - dup ! ; |
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: #> ( 64b -- addr +n ) 2drop pad cell - dup @ tuck - ; |
: #> ( xd -- addr u ) \ core number-sign-greater |
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2drop pad cell - dup @ tuck - ; |
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: sign ( n -- ) 0< IF [char] - hold THEN ; |
: sign ( n -- ) \ core |
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0< IF [char] - hold THEN ; |
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: # ( +d1 -- +d2 ) base @ 2 max ud/mod rot 9 over < |
: # ( ud1 -- ud2 ) \ core number-sign |
IF [ char A char 9 - 1- ] Literal + THEN [char] 0 + hold ; |
base @ 2 max ud/mod rot 9 over < |
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IF |
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[ char A char 9 - 1- ] Literal + |
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THEN |
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[char] 0 + hold ; |
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: #s ( +d -- 0 0 ) BEGIN # 2dup d0= UNTIL ; |
: #s ( +d -- 0 0 ) \ core number-sign-s |
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BEGIN |
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# 2dup d0= |
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UNTIL ; |
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\ print numbers 07jun92py |
\ print numbers 07jun92py |
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: d.r >r tuck dabs <# #s rot sign #> |
: d.r ( d n -- ) \ double d-dot-r |
r> over - spaces type ; |
>r tuck dabs <# #s rot sign #> |
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r> over - spaces type ; |
: ud.r >r <# #s #> r> over - spaces type ; |
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: ud.r ( ud n -- ) \ gforth u-d-dot-r |
: .r >r s>d r> d.r ; |
>r <# #s #> r> over - spaces type ; |
: u.r 0 swap ud.r ; |
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: .r ( n1 n2 -- ) \ core-ext dot-r |
: d. 0 d.r space ; |
>r s>d r> d.r ; |
: ud. 0 ud.r space ; |
: u.r ( u n -- ) \ core-ext u-dot-r |
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0 swap ud.r ; |
: . s>d d. ; |
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: u. 0 ud. ; |
: d. ( d -- ) \ double d-dot |
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0 d.r space ; |
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: ud. ( ud -- ) \ gforth u-d-dot |
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0 ud.r space ; |
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: . ( n -- ) \ core dot |
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s>d d. ; |
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: u. ( u -- ) \ core u-dot |
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0 ud. ; |
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\ catch throw 23feb93py |
\ catch throw 23feb93py |
\ bounce 08jun93jaw |
\ bounce 08jun93jaw |
Line 310 hex
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Line 419 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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: lp@ ( -- addr ) |
: lp@ ( -- addr ) \ gforth l-p-fetch |
laddr# [ 0 , ] ; |
laddr# [ 0 , ] ; |
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: catch ( x1 .. xn xt -- y1 .. ym 0 / z1 .. zn error ) |
: catch ( x1 .. xn xt -- y1 .. ym 0 / z1 .. zn error ) \ exception |
>r sp@ r> swap >r \ don't count xt! jaw |
>r sp@ r> swap >r \ don't count xt! jaw |
fp@ >r |
fp@ >r |
lp@ >r |
lp@ >r |
Line 322 hex
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Line 431 hex
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execute |
execute |
r> handler ! rdrop rdrop rdrop 0 ; |
r> handler ! rdrop rdrop rdrop 0 ; |
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: throw ( y1 .. ym error/0 -- y1 .. ym / z1 .. zn error ) |
: throw ( y1 .. ym error/0 -- y1 .. ym / z1 .. zn error ) \ exception |
?DUP IF |
?DUP IF |
[ here 4 cells ! ] |
[ here 4 cells ! ] |
handler @ rp! |
handler @ rp! |
Line 334 hex
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Line 443 hex
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\ Bouncing is very fine, |
\ Bouncing is very fine, |
\ programming without wasting time... jaw |
\ programming without wasting time... jaw |
: bounce ( y1 .. ym error/0 -- y1 .. ym error / y1 .. ym ) |
: bounce ( y1 .. ym error/0 -- y1 .. ym error / y1 .. ym ) \ gforth |
\ a throw without data or fp stack restauration |
\ a throw without data or fp stack restauration |
?DUP IF |
?DUP IF |
handler @ rp! |
handler @ rp! |
Line 346 hex
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Line 455 hex
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\ ?stack 23feb93py |
\ ?stack 23feb93py |
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: ?stack ( ?? -- ?? ) |
: ?stack ( ?? -- ?? ) \ gforth |
sp@ s0 @ > IF -4 throw THEN |
sp@ s0 @ > IF -4 throw THEN |
fp@ f0 @ > IF -&45 throw THEN ; |
fp@ f0 @ > IF -&45 throw THEN ; |
\ ?stack should be code -- it touches an empty stack! |
\ ?stack should be code -- it touches an empty stack! |
Line 354 hex
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Line 463 hex
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\ interpret 10mar92py |
\ interpret 10mar92py |
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Defer parser |
Defer parser |
Defer name ' (name) IS name |
Defer name ( -- c-addr count ) \ gforth |
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\ get the next word from the input buffer |
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' (name) IS name |
Defer notfound ( c-addr count -- ) |
Defer notfound ( c-addr count -- ) |
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: no.extensions ( addr u -- ) 2drop -&13 bounce ; |
: no.extensions ( addr u -- ) |
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2drop -&13 bounce ; |
' no.extensions IS notfound |
' no.extensions IS notfound |
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: interpret |
: interpret ( ?? -- ?? ) \ gforth |
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\ interpret/compile the (rest of the) input buffer |
BEGIN |
BEGIN |
?stack name dup |
?stack name dup |
WHILE |
WHILE |
Line 371 Defer notfound ( c-addr count -- )
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Line 483 Defer notfound ( c-addr count -- )
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\ interpreter compiler 30apr92py |
\ interpreter compiler 30apr92py |
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: interpreter ( c-addr u -- ) |
: interpreter ( c-addr u -- ) \ gforth |
\ interpretation semantics for the name/number c-addr u |
\ interpretation semantics for the name/number c-addr u |
2dup sfind dup |
2dup sfind dup |
IF |
IF |
Line 391 Defer notfound ( c-addr count -- )
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Line 503 Defer notfound ( c-addr count -- )
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' interpreter IS parser |
' interpreter IS parser |
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: compiler ( c-addr u -- ) |
: compiler ( c-addr u -- ) \ gforth |
\ compilation semantics for the name/number c-addr u |
\ compilation semantics for the name/number c-addr u |
2dup sfind dup |
2dup sfind dup |
IF |
IF |
Line 414 Defer notfound ( c-addr count -- )
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Line 526 Defer notfound ( c-addr count -- )
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drop notfound |
drop notfound |
THEN ; |
THEN ; |
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: [ ['] interpreter IS parser state off ; immediate |
: [ ( -- ) \ core left-bracket |
: ] ['] compiler IS parser state on ; |
['] interpreter IS parser state off ; immediate |
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: ] ( -- ) \ core right-bracket |
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['] compiler IS parser state on ; |
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\ locals stuff needed for control structures |
\ locals stuff needed for control structures |
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: compile-lp+! ( n -- ) |
: compile-lp+! ( n -- ) \ gforth compile-l-p-plus-store |
dup negate locals-size +! |
dup negate locals-size +! |
0 over = if |
0 over = if |
else -1 cells over = if postpone lp- |
else -1 cells over = if postpone lp- |
Line 428 Defer notfound ( c-addr count -- )
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Line 542 Defer notfound ( c-addr count -- )
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else postpone lp+!# dup , |
else postpone lp+!# dup , |
then then then then drop ; |
then then then then drop ; |
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: adjust-locals-size ( n -- ) |
: adjust-locals-size ( n -- ) \ gforth |
\ sets locals-size to n and generates an appropriate lp+! |
\ sets locals-size to n and generates an appropriate lp+! |
locals-size @ swap - compile-lp+! ; |
locals-size @ swap - compile-lp+! ; |
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Line 444 variable backedge-locals
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Line 558 variable backedge-locals
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\ the back edge if the BEGIN is unreachable from above. Set by |
\ the back edge if the BEGIN is unreachable from above. Set by |
\ ASSUME-LIVE, reset by UNREACHABLE. |
\ ASSUME-LIVE, reset by UNREACHABLE. |
|
|
: UNREACHABLE ( -- ) |
: UNREACHABLE ( -- ) \ gforth |
\ declares the current point of execution as unreachable |
\ declares the current point of execution as unreachable |
dead-code on |
dead-code on |
0 backedge-locals ! ; immediate |
0 backedge-locals ! ; immediate |
|
|
: ASSUME-LIVE ( orig -- orig ) |
: ASSUME-LIVE ( orig -- orig ) \ gforth |
\ used immediateliy before a BEGIN that is not reachable from |
\ used immediateliy before a BEGIN that is not reachable from |
\ above. causes the BEGIN to assume that the same locals are live |
\ above. causes the BEGIN to assume that the same locals are live |
\ as at the orig point |
\ as at the orig point |
Line 458 variable backedge-locals
|
Line 572 variable backedge-locals
|
|
|
\ locals list operations |
\ locals list operations |
|
|
: common-list ( list1 list2 -- list3 ) |
: common-list ( list1 list2 -- list3 ) \ gforth-internal |
\ list1 and list2 are lists, where the heads are at higher addresses than |
\ list1 and list2 are lists, where the heads are at higher addresses than |
\ the tail. list3 is the largest sublist of both lists. |
\ the tail. list3 is the largest sublist of both lists. |
begin |
begin |
Line 472 variable backedge-locals
|
Line 586 variable backedge-locals
|
repeat |
repeat |
drop ; |
drop ; |
|
|
: sub-list? ( list1 list2 -- f ) |
: sub-list? ( list1 list2 -- f ) \ gforth-internal |
\ true iff list1 is a sublist of list2 |
\ true iff list1 is a sublist of list2 |
begin |
begin |
2dup u< |
2dup u< |
Line 481 variable backedge-locals
|
Line 595 variable backedge-locals
|
repeat |
repeat |
= ; |
= ; |
|
|
: list-size ( list -- u ) |
: list-size ( list -- u ) \ gforth-internal |
\ size of the locals frame represented by list |
\ size of the locals frame represented by list |
0 ( list n ) |
0 ( list n ) |
begin |
begin |
Line 542 variable backedge-locals
|
Line 656 variable backedge-locals
|
|
|
3 constant cs-item-size |
3 constant cs-item-size |
|
|
: CS-PICK ( ... u -- ... destu ) |
: CS-PICK ( ... u -- ... destu ) \ tools-ext |
1+ cs-item-size * 1- >r |
1+ cs-item-size * 1- >r |
r@ pick r@ pick r@ pick |
r@ pick r@ pick r@ pick |
rdrop |
rdrop |
dup non-orig? ; |
dup non-orig? ; |
|
|
: CS-ROLL ( destu/origu .. dest0/orig0 u -- .. dest0/orig0 destu/origu ) |
: CS-ROLL ( destu/origu .. dest0/orig0 u -- .. dest0/orig0 destu/origu ) \ tools-ext |
1+ cs-item-size * 1- >r |
1+ cs-item-size * 1- >r |
r@ roll r@ roll r@ roll |
r@ roll r@ roll r@ roll |
rdrop |
rdrop |
Line 574 variable backedge-locals
|
Line 688 variable backedge-locals
|
: >resolve ( addr -- ) here over - swap ! ; |
: >resolve ( addr -- ) here over - swap ! ; |
: <resolve ( addr -- ) here - , ; |
: <resolve ( addr -- ) here - , ; |
|
|
: BUT 1 cs-roll ; immediate restrict |
: BUT |
: YET 0 cs-pick ; immediate restrict |
1 cs-roll ; immediate restrict |
|
: YET |
|
0 cs-pick ; immediate restrict |
|
|
\ Structural Conditionals 12dec92py |
\ Structural Conditionals 12dec92py |
|
|
: AHEAD ( -- orig ) |
: AHEAD ( compilation -- orig ; run-time -- ) \ tools-ext |
POSTPONE branch >mark POSTPONE unreachable ; immediate restrict |
POSTPONE branch >mark POSTPONE unreachable ; immediate restrict |
|
|
: IF ( -- orig ) |
: IF ( compilation -- orig ; run-time f -- ) \ core |
POSTPONE ?branch >mark ; immediate restrict |
POSTPONE ?branch >mark ; immediate restrict |
|
|
: ?DUP-IF \ general |
: ?DUP-IF ( compilation -- orig ; run-time n -- n| ) \ gforth question-dupe-if |
\ This is the preferred alternative to the idiom "?DUP IF", since it can be |
\ This is the preferred alternative to the idiom "?DUP IF", since it can be |
\ better handled by tools like stack checkers |
\ better handled by tools like stack checkers |
POSTPONE ?dup POSTPONE if ; immediate restrict |
POSTPONE ?dup POSTPONE if ; immediate restrict |
: ?DUP-0=-IF \ general |
: ?DUP-0=-IF ( compilation -- orig ; run-time n -- n| ) \ gforth question-dupe-zero-equals-if |
POSTPONE ?dup POSTPONE 0= POSTPONE if ; immediate restrict |
POSTPONE ?dup POSTPONE 0= POSTPONE if ; immediate restrict |
|
|
: THEN ( orig -- ) |
: THEN ( compilation orig -- ; run-time -- ) \ core |
dup orig? |
dup orig? |
dead-orig = |
dead-orig = |
if |
if |
Line 609 variable backedge-locals
|
Line 725 variable backedge-locals
|
then |
then |
then ; immediate restrict |
then ; immediate restrict |
|
|
' THEN alias ENDIF immediate restrict \ general |
' THEN alias ENDIF ( compilation orig -- ; run-time -- ) \ gforth |
|
immediate restrict |
\ Same as "THEN". This is what you use if your program will be seen by |
\ Same as "THEN". This is what you use if your program will be seen by |
\ people who have not been brought up with Forth (or who have been |
\ people who have not been brought up with Forth (or who have been |
\ brought up with fig-Forth). |
\ brought up with fig-Forth). |
|
|
: ELSE ( orig1 -- orig2 ) |
: ELSE ( compilation orig1 -- orig2 ; run-time f -- ) \ core |
POSTPONE ahead |
POSTPONE ahead |
1 cs-roll |
1 cs-roll |
POSTPONE then ; immediate restrict |
POSTPONE then ; immediate restrict |
|
|
|
|
: BEGIN ( -- dest ) |
: BEGIN ( compilation -- dest ; run-time -- ) \ core |
dead-code @ if |
dead-code @ if |
\ set up an assumption of the locals visible here. if the |
\ set up an assumption of the locals visible here. if the |
\ users want something to be visible, they have to declare |
\ users want something to be visible, they have to declare |
Line 635 variable backedge-locals
|
Line 752 variable backedge-locals
|
\ issue a warning (see below). The following code is generated: |
\ issue a warning (see below). The following code is generated: |
\ lp+!# (current-local-size - dest-locals-size) |
\ lp+!# (current-local-size - dest-locals-size) |
\ branch <begin> |
\ branch <begin> |
: AGAIN ( dest -- ) |
: AGAIN ( compilation dest -- ; run-time -- ) \ core-ext |
dest? |
dest? |
over list-size adjust-locals-size |
over list-size adjust-locals-size |
POSTPONE branch |
POSTPONE branch |
Line 661 variable backedge-locals
|
Line 778 variable backedge-locals
|
then ( list ) |
then ( list ) |
check-begin ; |
check-begin ; |
|
|
: UNTIL ( dest -- ) |
: UNTIL ( compilation dest -- ; run-time f -- ) \ core |
dest? ['] ?branch ['] ?branch-lp+!# until-like ; immediate restrict |
dest? ['] ?branch ['] ?branch-lp+!# until-like ; immediate restrict |
|
|
: WHILE ( dest -- orig dest ) |
: WHILE ( compilation dest -- orig dest ; run-time f -- ) \ core |
POSTPONE if |
POSTPONE if |
1 cs-roll ; immediate restrict |
1 cs-roll ; immediate restrict |
|
|
: REPEAT ( orig dest -- ) |
: REPEAT ( compilation orig dest -- ; run-time -- ) \ core |
POSTPONE again |
POSTPONE again |
POSTPONE then ; immediate restrict |
POSTPONE then ; immediate restrict |
|
|
Line 712 Avariable leave-sp leave-stack 3 cells
|
Line 829 Avariable leave-sp leave-stack 3 cells
|
cell - dup @ swap |
cell - dup @ swap |
leave-sp ! ; |
leave-sp ! ; |
|
|
: DONE ( orig -- ) |
: DONE ( compilation orig -- ; run-time -- ) \ gforth |
\ !! the original done had ( addr -- ) |
\ !! the original done had ( addr -- ) |
drop >r drop |
drop >r drop |
begin |
begin |
Line 723 Avariable leave-sp leave-stack 3 cells
|
Line 840 Avariable leave-sp leave-stack 3 cells
|
repeat |
repeat |
>leave rdrop ; immediate restrict |
>leave rdrop ; immediate restrict |
|
|
: LEAVE ( -- ) |
: LEAVE ( compilation -- ; run-time loop-sys -- ) \ core |
POSTPONE ahead |
POSTPONE ahead |
>leave ; immediate restrict |
>leave ; immediate restrict |
|
|
: ?LEAVE ( -- ) |
: ?LEAVE ( compilation -- ; run-time f | f loop-sys -- ) \ gforth question-leave |
POSTPONE 0= POSTPONE if |
POSTPONE 0= POSTPONE if |
>leave ; immediate restrict |
>leave ; immediate restrict |
|
|
: DO ( -- do-sys ) |
: DO ( compilation -- do-sys ; run-time w1 w2 -- loop-sys ) \ core |
POSTPONE (do) |
POSTPONE (do) |
POSTPONE begin drop do-dest |
POSTPONE begin drop do-dest |
( 0 0 0 >leave ) ; immediate restrict |
( 0 0 0 >leave ) ; immediate restrict |
|
|
: ?DO ( -- do-sys ) |
: ?do-like ( -- do-sys ) |
( 0 0 0 >leave ) |
( 0 0 0 >leave ) |
POSTPONE (?do) |
|
>mark >leave |
>mark >leave |
POSTPONE begin drop do-dest ; immediate restrict |
POSTPONE begin drop do-dest ; |
|
|
: FOR ( -- do-sys ) |
: ?DO ( compilation -- do-sys ; run-time w1 w2 -- | loop-sys ) \ core-ext question-do |
|
POSTPONE (?do) ?do-like ; immediate restrict |
|
|
|
: +DO ( compilation -- do-sys ; run-time w1 w2 -- | loop-sys ) \ gforth plus-do |
|
POSTPONE (+do) ?do-like ; immediate restrict |
|
|
|
: U+DO ( compilation -- do-sys ; run-time w1 w2 -- | loop-sys ) \ gforth u-plus-do |
|
POSTPONE (u+do) ?do-like ; immediate restrict |
|
|
|
: -DO ( compilation -- do-sys ; run-time w1 w2 -- | loop-sys ) \ gforth minus-do |
|
POSTPONE (-do) ?do-like ; immediate restrict |
|
|
|
: U-DO ( compilation -- do-sys ; run-time w1 w2 -- | loop-sys ) \ gforth u-minus-do |
|
POSTPONE (u-do) ?do-like ; immediate restrict |
|
|
|
: FOR ( compilation -- do-sys ; run-time w -- loop-sys ) \ gforth |
POSTPONE (for) |
POSTPONE (for) |
POSTPONE begin drop do-dest |
POSTPONE begin drop do-dest |
( 0 0 0 >leave ) ; immediate restrict |
( 0 0 0 >leave ) ; immediate restrict |
Line 753 Avariable leave-sp leave-stack 3 cells
|
Line 884 Avariable leave-sp leave-stack 3 cells
|
>r >r 0 cs-pick swap cell - swap 1 cs-roll r> r> rot do-dest? |
>r >r 0 cs-pick swap cell - swap 1 cs-roll r> r> rot do-dest? |
until-like POSTPONE done POSTPONE unloop ; |
until-like POSTPONE done POSTPONE unloop ; |
|
|
: LOOP ( do-sys -- ) |
: LOOP ( compilation do-sys -- ; run-time loop-sys1 -- | loop-sys2 ) \ core |
['] (loop) ['] (loop)-lp+!# loop-like ; immediate restrict |
['] (loop) ['] (loop)-lp+!# loop-like ; immediate restrict |
|
|
: +LOOP ( do-sys -- ) |
: +LOOP ( compilation do-sys -- ; run-time loop-sys1 n -- | loop-sys2 ) \ core plus-loop |
['] (+loop) ['] (+loop)-lp+!# loop-like ; immediate restrict |
['] (+loop) ['] (+loop)-lp+!# loop-like ; immediate restrict |
|
|
|
\ !! should the compiler warn about +DO..-LOOP? |
|
: -LOOP ( compilation do-sys -- ; run-time loop-sys1 u -- | loop-sys2 ) \ gforth minus-loop |
|
['] (-loop) ['] (-loop)-lp+!# loop-like ; immediate restrict |
|
|
\ A symmetric version of "+LOOP". I.e., "-high -low ?DO -inc S+LOOP" |
\ A symmetric version of "+LOOP". I.e., "-high -low ?DO -inc S+LOOP" |
\ will iterate as often as "high low ?DO inc S+LOOP". For positive |
\ will iterate as often as "high low ?DO inc S+LOOP". For positive |
\ increments it behaves like "+LOOP". Use S+LOOP instead of +LOOP for |
\ increments it behaves like "+LOOP". Use S+LOOP instead of +LOOP for |
\ negative increments. |
\ negative increments. |
: S+LOOP ( do-sys -- ) |
: S+LOOP ( compilation do-sys -- ; run-time loop-sys1 n -- | loop-sys2 ) \ gforth s-plus-loop |
['] (s+loop) ['] (s+loop)-lp+!# loop-like ; immediate restrict |
['] (s+loop) ['] (s+loop)-lp+!# loop-like ; immediate restrict |
|
|
: NEXT ( do-sys -- ) |
: NEXT ( compilation do-sys -- ; run-time loop-sys1 -- | loop-sys2 ) \ gforth |
['] (next) ['] (next)-lp+!# loop-like ; immediate restrict |
['] (next) ['] (next)-lp+!# loop-like ; immediate restrict |
|
|
\ Structural Conditionals 12dec92py |
\ Structural Conditionals 12dec92py |
|
|
: EXIT ( -- ) |
: EXIT ( compilation -- ; run-time nest-sys -- ) \ core |
0 adjust-locals-size |
0 adjust-locals-size |
POSTPONE ;s |
POSTPONE ;s |
POSTPONE unreachable ; immediate restrict |
POSTPONE unreachable ; immediate restrict |
|
|
: ?EXIT ( -- ) |
: ?EXIT ( -- ) ( compilation -- ; run-time nest-sys f -- | nest-sys ) \ gforth |
POSTPONE if POSTPONE exit POSTPONE then ; immediate restrict |
POSTPONE if POSTPONE exit POSTPONE then ; immediate restrict |
|
|
\ Strings 22feb93py |
\ Strings 22feb93py |
Line 787 Avariable leave-sp leave-stack 3 cells
|
Line 922 Avariable leave-sp leave-stack 3 cells
|
r> r> dup count + aligned >r swap >r ; restrict |
r> r> dup count + aligned >r swap >r ; restrict |
: (.") "lit count type ; restrict |
: (.") "lit count type ; restrict |
: (S") "lit count ; restrict |
: (S") "lit count ; restrict |
: SLiteral postpone (S") here over char+ allot place align ; |
: SLiteral ( Compilation c-addr1 u ; run-time -- c-addr2 u ) \ string |
|
postpone (S") here over char+ allot place align ; |
immediate restrict |
immediate restrict |
create s"-buffer /line chars allot |
create s"-buffer /line chars allot |
: S" ( run-time: -- c-addr u ) |
: S" ( compilation 'ccc"' -- ; run-time -- c-addr u ) \ core,file s-quote |
[char] " parse |
[char] " parse |
state @ |
state @ |
IF |
IF |
Line 798 create s"-buffer /line chars allot
|
Line 934 create s"-buffer /line chars allot
|
ELSE |
ELSE |
/line min >r s"-buffer r@ cmove |
/line min >r s"-buffer r@ cmove |
s"-buffer r> |
s"-buffer r> |
THEN ; |
THEN ; immediate |
immediate |
|
: ." state @ IF postpone (.") ," align |
: ." ( compilation 'ccc"' -- ; run-time -- ) \ core dot-quote |
|
state @ IF postpone (.") ," align |
ELSE [char] " parse type THEN ; immediate |
ELSE [char] " parse type THEN ; immediate |
: ( [char] ) parse 2drop ; immediate |
: ( ( compilation 'ccc<close-paren>' -- ; run-time -- ) \ core,file paren |
|
[char] ) parse 2drop ; immediate |
: \ ( -- ) \ core-ext backslash |
: \ ( -- ) \ core-ext backslash |
blk @ |
blk @ |
IF |
IF |
Line 811 create s"-buffer /line chars allot
|
Line 949 create s"-buffer /line chars allot
|
THEN |
THEN |
source >in ! drop ; immediate |
source >in ! drop ; immediate |
|
|
: \G ( -- ) \ new backslash |
: \G ( -- ) \ gforth backslash |
POSTPONE \ ; immediate |
POSTPONE \ ; immediate |
|
|
\ error handling 22feb93py |
\ error handling 22feb93py |
\ 'abort thrown out! 11may93jaw |
\ 'abort thrown out! 11may93jaw |
|
|
: (abort") "lit >r IF r> "error ! -2 throw THEN |
: (abort") |
rdrop ; |
"lit >r |
: abort" postpone (abort") ," ; immediate restrict |
IF |
|
r> "error ! -2 throw |
|
THEN |
|
rdrop ; |
|
: abort" ( compilation 'ccc"' -- ; run-time f -- ) \ core,exception-ext abort-quote |
|
postpone (abort") ," ; immediate restrict |
|
|
\ Header states 23feb93py |
\ Header states 23feb93py |
|
|
Line 837 create s"-buffer /line chars allot
|
Line 980 create s"-buffer /line chars allot
|
\ with existing/independent defining words |
\ with existing/independent defining words |
|
|
defer (header) |
defer (header) |
defer header ' (header) IS header |
defer header ( -- ) \ gforth |
|
' (header) IS header |
|
|
: string, ( c-addr u -- ) |
: string, ( c-addr u -- ) \ gforth |
\ puts down string as cstring |
\ puts down string as cstring |
dup c, here swap chars dup allot move ; |
dup c, here swap chars dup allot move ; |
|
|
: name, ( "name" -- ) |
: name, ( "name" -- ) \ gforth |
name name-too-short? name-too-long? |
name name-too-short? name-too-long? |
string, cfalign ; |
string, cfalign ; |
: input-stream-header ( "name" -- ) |
: input-stream-header ( "name" -- ) |
Line 869 create nextname-buffer 32 chars allot
|
Line 1013 create nextname-buffer 32 chars allot
|
input-stream ; |
input-stream ; |
|
|
\ the next name is given in the string |
\ the next name is given in the string |
: nextname ( c-addr u -- ) \ general |
: nextname ( c-addr u -- ) \ gforth |
name-too-long? |
name-too-long? |
nextname-buffer c! ( c-addr ) |
nextname-buffer c! ( c-addr ) |
nextname-buffer count move |
nextname-buffer count move |
Line 879 create nextname-buffer 32 chars allot
|
Line 1023 create nextname-buffer 32 chars allot
|
0 last ! cfalign |
0 last ! cfalign |
input-stream ; |
input-stream ; |
|
|
: noname ( -- ) \ general |
: noname ( -- ) \ gforth |
\ the next defined word remains anonymous. The xt of that word is given by lastxt |
\ the next defined word remains anonymous. The xt of that word is given by lastxt |
['] noname-header IS (header) ; |
['] noname-header IS (header) ; |
|
|
: lastxt ( -- xt ) \ general |
: lastxt ( -- xt ) \ gforth |
\ xt is the execution token of the last word defined. The main purpose of this word is to get the xt of words defined using noname |
\ xt is the execution token of the last word defined. The main purpose of this word is to get the xt of words defined using noname |
lastcfa @ ; |
lastcfa @ ; |
|
|
: Alias ( cfa "name" -- ) |
: Alias ( cfa "name" -- ) \ gforth |
Header reveal , $80 flag! ; |
Header reveal , $80 flag! ; |
|
|
: name>string ( nfa -- addr count ) |
: name>string ( nfa -- addr count ) \ gforth name-to-string |
cell+ count $1F and ; |
cell+ count $1F and ; |
|
|
Create ??? 0 , 3 c, char ? c, char ? c, char ? c, |
Create ??? 0 , 3 c, char ? c, char ? c, char ? c, |
: >name ( cfa -- nfa ) |
: >name ( cfa -- nfa ) \ gforth to-name |
$21 cell do |
$21 cell do |
dup i - count $9F and + cfaligned over $80 + = if |
dup i - count $9F and + cfaligned over $80 + = if |
i - cell - unloop exit |
i - cell - unloop exit |
Line 902 Create ??? 0 , 3 c, char ? c, char ? c,
|
Line 1046 Create ??? 0 , 3 c, char ? c, char ? c,
|
cell +loop |
cell +loop |
drop ??? ( wouldn't 0 be better? ) ; |
drop ??? ( wouldn't 0 be better? ) ; |
|
|
\ indirect threading 17mar93py |
\ threading 17mar93py |
|
|
: cfa, ( code-address -- ) |
: cfa, ( code-address -- ) \ gforth cfa-comma |
here lastcfa ! |
here |
here 0 A, 0 , code-address! ; |
dup lastcfa ! |
: compile, ( xt -- ) A, ; |
0 A, 0 , code-address! ; |
: !does ( addr -- ) lastcfa @ does-code! ; |
: compile, ( xt -- ) \ core-ext compile-comma |
: (;code) ( R: addr -- ) r> /does-handler + !does ; |
A, ; |
|
: !does ( addr -- ) \ gforth store-does |
|
lastxt does-code! ; |
|
: (does>) ( R: addr -- ) |
|
r> /does-handler + !does ; |
: dodoes, ( -- ) |
: dodoes, ( -- ) |
here /does-handler allot does-handler! ; |
here /does-handler allot does-handler! ; |
|
|
\ direct threading is implementation dependent |
: Create ( -- ) \ core |
|
Header reveal dovar: cfa, ; |
: Create Header reveal [ :dovar ] Literal cfa, ; |
|
|
|
\ DOES> 17mar93py |
\ DOES> 17mar93py |
|
|
: DOES> ( compilation: -- ) |
: DOES> ( compilation colon-sys1 -- colon-sys2 ; run-time nest-sys -- ) \ core does |
state @ |
state @ |
IF |
IF |
;-hook postpone (;code) dodoes, |
;-hook postpone (does>) ?struc dodoes, |
ELSE |
ELSE |
dodoes, here !does 0 ] |
align dodoes, here !does ] |
THEN |
THEN |
:-hook ; immediate |
defstart :-hook ; immediate |
|
|
\ Create Variable User Constant 17mar93py |
\ Create Variable User Constant 17mar93py |
|
|
: Variable Create 0 , ; |
: Variable ( -- ) \ core |
: AVariable Create 0 A, ; |
Create 0 , ; |
|
: AVariable ( -- ) \ gforth |
|
Create 0 A, ; |
: 2VARIABLE ( "name" -- ) \ double |
: 2VARIABLE ( "name" -- ) \ double |
create 0 , 0 , ; |
create 0 , 0 , ; |
|
|
: User Variable ; |
: User |
: AUser AVariable ; |
Variable ; |
|
: AUser |
|
AVariable ; |
|
|
|
: (Constant) Header reveal docon: cfa, ; |
|
: Constant ( w -- ) \ core |
|
(Constant) , ; |
|
: AConstant ( addr -- ) \ gforth |
|
(Constant) A, ; |
|
|
: (Constant) Header reveal [ :docon ] Literal cfa, ; |
: 2Constant ( d -- ) \ double |
: Constant (Constant) , ; |
|
: AConstant (Constant) A, ; |
|
|
|
: 2Constant |
|
Create ( w1 w2 "name" -- ) |
Create ( w1 w2 "name" -- ) |
2, |
2, |
DOES> ( -- w1 w2 ) |
DOES> ( -- w1 w2 ) |
Line 950 Create ??? 0 , 3 c, char ? c, char ? c,
|
Line 1103 Create ??? 0 , 3 c, char ? c, char ? c,
|
|
|
\ IS Defer What's Defers TO 24feb93py |
\ IS Defer What's Defers TO 24feb93py |
|
|
: Defer ( -- ) |
: Defer ( -- ) \ gforth |
\ !! shouldn't it be initialized with abort or something similar? |
\ !! shouldn't it be initialized with abort or something similar? |
Header Reveal [ :dodefer ] Literal cfa, |
Header Reveal dodefer: cfa, |
['] noop A, ; |
['] noop A, ; |
\ Create ( -- ) |
\ Create ( -- ) |
\ ['] noop A, |
\ ['] noop A, |
\ DOES> ( ??? ) |
\ DOES> ( ??? ) |
\ @ execute ; |
\ @ execute ; |
|
|
: IS ( addr "name" -- ) |
: IS ( addr "name" -- ) \ gforth |
' >body |
' >body |
state @ |
state @ |
IF postpone ALiteral postpone ! |
IF postpone ALiteral postpone ! |
ELSE ! |
ELSE ! |
THEN ; immediate |
THEN ; immediate |
' IS Alias TO immediate |
' IS Alias TO ( addr "name" -- ) \ core-ext |
|
immediate |
|
|
: What's ( "name" -- addr ) ' >body |
: What's ( "name" -- addr ) \ gforth |
state @ IF postpone ALiteral postpone @ ELSE @ THEN ; |
' >body |
immediate |
state @ |
: Defers ( "name" -- ) ' >body @ compile, ; |
IF |
immediate |
postpone ALiteral postpone @ |
|
ELSE |
|
@ |
|
THEN ; immediate |
|
: Defers ( "name" -- ) \ gforth |
|
' >body @ compile, ; immediate |
|
|
\ : ; 24feb93py |
\ : ; 24feb93py |
|
|
defer :-hook ( sys1 -- sys2 ) |
defer :-hook ( sys1 -- sys2 ) |
defer ;-hook ( sys2 -- sys1 ) |
defer ;-hook ( sys2 -- sys1 ) |
|
|
: : ( -- colon-sys ) Header [ :docol ] Literal cfa, defstart ] :-hook ; |
: : ( -- colon-sys ) \ core colon |
: ; ( colon-sys -- ) ;-hook ?struc postpone exit reveal postpone [ ; |
Header docol: cfa, defstart ] :-hook ; |
immediate restrict |
: ; ( compilation colon-sys -- ; run-time nest-sys ) \ core semicolon |
|
;-hook ?struc postpone exit reveal postpone [ ; immediate restrict |
|
|
: :noname ( -- xt colon-sys ) |
: :noname ( -- xt colon-sys ) \ core-ext colon-no-name |
0 last ! |
0 last ! |
here [ :docol ] Literal cfa, 0 ] :-hook ; |
here docol: cfa, 0 ] :-hook ; |
|
|
\ Search list handling 23feb93py |
\ Search list handling 23feb93py |
|
|
AVariable current |
AVariable current ( -- addr ) \ gforth |
|
|
: last? ( -- false / nfa nfa ) last @ ?dup ; |
: last? ( -- false / nfa nfa ) |
|
last @ ?dup ; |
: (reveal) ( -- ) |
: (reveal) ( -- ) |
last? |
last? |
IF |
IF |
Line 1008 AVariable current
|
Line 1169 AVariable current
|
|
|
struct |
struct |
1 cells: field find-method \ xt: ( c_addr u wid -- name-id ) |
1 cells: field find-method \ xt: ( c_addr u wid -- name-id ) |
1 cells: field reveal-method \ xt: ( -- ) |
1 cells: field reveal-method \ xt: ( -- ) \ used by dofield:, must be field |
1 cells: field rehash-method \ xt: ( wid -- ) |
1 cells: field rehash-method \ xt: ( wid -- ) |
\ \ !! what else |
\ \ !! what else |
end-struct wordlist-map-struct |
end-struct wordlist-map-struct |
Line 1032 G forth-wordlist current T !
|
Line 1193 G forth-wordlist current T !
|
: (search-wordlist) ( addr count wid -- nfa / false ) |
: (search-wordlist) ( addr count wid -- nfa / false ) |
dup wordlist-map @ find-method @ execute ; |
dup wordlist-map @ find-method @ execute ; |
|
|
: search-wordlist ( addr count wid -- 0 / xt +-1 ) |
: search-wordlist ( addr count wid -- 0 / xt +-1 ) \ search |
(search-wordlist) dup IF found THEN ; |
(search-wordlist) dup IF found THEN ; |
|
|
Variable warnings G -1 warnings T ! |
Variable warnings ( -- addr ) \ gforth |
|
G -1 warnings T ! |
|
|
: check-shadow ( addr count wid -- ) |
: check-shadow ( addr count wid -- ) |
\ prints a warning if the string is already present in the wordlist |
\ prints a warning if the string is already present in the wordlist |
Line 1051 Variable warnings G -1 warnings T !
|
Line 1213 Variable warnings G -1 warnings T !
|
then |
then |
2drop 2drop ; |
2drop 2drop ; |
|
|
: sfind ( c-addr u -- xt n / 0 ) |
: sfind ( c-addr u -- xt n / 0 ) \ gforth |
lookup @ search-wordlist ; |
lookup @ search-wordlist ; |
|
|
: find ( addr -- cfa +-1 / string false ) |
: find ( addr -- cfa +-1 / string false ) \ core,search |
\ !! not ANS conformant: returns +-2 for restricted words |
\ !! not ANS conformant: returns +-2 for restricted words |
dup count sfind dup if |
dup count sfind dup if |
rot drop |
rot drop |
then ; |
then ; |
|
|
: reveal ( -- ) |
: reveal ( -- ) \ gforth |
last? if |
last? if |
name>string current @ check-shadow |
name>string current @ check-shadow |
then |
then |
current @ wordlist-map @ reveal-method @ execute ; |
current @ wordlist-map @ reveal-method @ execute ; |
|
|
: rehash ( wid -- ) dup wordlist-map @ rehash-method @ execute ; |
: rehash ( wid -- ) |
|
dup wordlist-map @ rehash-method @ execute ; |
|
|
: ' ( "name" -- addr ) name sfind 0= if -&13 bounce then ; |
: ' ( "name" -- addr ) \ core tick |
: ['] ( "name" -- addr ) ' postpone ALiteral ; immediate |
name sfind 0= if -&13 bounce then ; |
|
: ['] ( compilation "name" -- ; run-time --addr ) \ core bracket-tick |
|
' postpone ALiteral ; immediate |
\ Input 13feb93py |
\ Input 13feb93py |
|
|
07 constant #bell |
07 constant #bell ( -- c ) \ gforth |
08 constant #bs |
08 constant #bs ( -- c ) \ gforth |
09 constant #tab |
09 constant #tab ( -- c ) \ gforth |
7F constant #del |
7F constant #del ( -- c ) \ gforth |
0D constant #cr \ the newline key code |
0D constant #cr ( -- c ) \ gforth |
0C constant #ff |
\ the newline key code |
0A constant #lf |
0C constant #ff ( -- c ) \ gforth |
|
0A constant #lf ( -- c ) \ gforth |
|
|
: bell #bell emit ; |
: bell #bell emit ; |
|
|
Line 1119 defer everychar
|
Line 1285 defer everychar
|
\ decode should better use a table for control key actions |
\ decode should better use a table for control key actions |
\ to define keyboard bindings later |
\ to define keyboard bindings later |
|
|
: accept ( addr len -- len ) |
: 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 |
Line 1128 defer everychar
|
Line 1294 defer everychar
|
|
|
\ Output 13feb93py |
\ Output 13feb93py |
|
|
Defer type \ defer type for a output buffer or fast |
Defer type ( c-addr u -- ) \ core |
\ screen write |
\ defer type for a output buffer or fast |
|
\ screen write |
|
|
\ : (type) ( addr len -- ) |
\ : (type) ( addr len -- ) |
\ bounds ?DO I c@ emit LOOP ; |
\ bounds ?DO I c@ emit LOOP ; |
|
|
' (type) IS Type |
' (type) IS Type |
|
|
Defer emit |
Defer emit ( c -- ) \ core |
|
|
' (Emit) IS Emit |
' (Emit) IS Emit |
|
|
Defer key |
Defer key ( -- c ) \ core |
' (key) IS key |
' (key) IS key |
|
|
\ : form ( -- rows cols ) &24 &80 ; |
\ : form ( -- rows cols ) &24 &80 ; |
Line 1150 Defer key
|
Line 1316 Defer key
|
|
|
\ Query 07apr93py |
\ Query 07apr93py |
|
|
: refill ( -- flag ) |
: 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 |
loadfile @ ?dup |
loadfile @ ?dup |
Line 1161 Defer key
|
Line 1327 Defer key
|
1 loadline +! |
1 loadline +! |
swap #tib ! 0 >in ! ; |
swap #tib ! 0 >in ! ; |
|
|
: Query ( -- ) loadfile off blk off refill drop ; |
: Query ( -- ) \ core-ext |
|
\ obsolescent |
|
loadfile off blk off refill drop ; |
|
|
\ File specifiers 11jun93jaw |
\ File specifiers 11jun93jaw |
|
|
Line 1169 Defer key
|
Line 1337 Defer key
|
\ 1 c, here char r c, 0 c, 0 c, 0 c, char b c, 0 c, |
\ 1 c, here char r c, 0 c, 0 c, 0 c, char b c, 0 c, |
\ 2 c, here char r c, char + c, 0 c, |
\ 2 c, here char r c, char + c, 0 c, |
\ 2 c, here char w c, char + c, 0 c, align |
\ 2 c, here char w c, char + c, 0 c, align |
4 Constant w/o |
4 Constant w/o ( -- fam ) \ file w-o |
2 Constant r/w |
2 Constant r/w ( -- fam ) \ file r-o |
0 Constant r/o |
0 Constant r/o ( -- fam ) \ file r-w |
|
|
\ BIN WRITE-LINE 11jun93jaw |
\ BIN WRITE-LINE 11jun93jaw |
|
|
\ : bin dup 1 chars - c@ |
\ : bin dup 1 chars - c@ |
\ r/o 4 chars + over - dup >r swap move r> ; |
\ r/o 4 chars + over - dup >r swap move r> ; |
|
|
: bin 1 or ; |
: bin ( fam1 -- fam2 ) \ file |
|
1 or ; |
|
|
create nl$ 1 c, A c, 0 c, \ gnu includes usually a cr in dos |
create nl$ 1 c, A c, 0 c, \ gnu includes usually a cr in dos |
\ or not unix environments if |
\ or not unix environments if |
\ bin is not selected |
\ bin is not selected |
|
|
: write-line dup >r write-file ?dup IF r> drop EXIT THEN |
: write-line ( c-addr u fileid -- ior ) \ file |
nl$ count r> write-file ; |
dup >r write-file |
|
?dup IF |
|
r> drop EXIT |
|
THEN |
|
nl$ count r> write-file ; |
|
|
\ include-file 07apr93py |
\ include-file 07apr93py |
|
|
Line 1210 create nl$ 1 c, A c, 0 c, \ gnu includes
|
Line 1383 create nl$ 1 c, A c, 0 c, \ gnu includes
|
: read-loop ( i*x -- j*x ) |
: read-loop ( i*x -- j*x ) |
BEGIN refill WHILE interpret REPEAT ; |
BEGIN refill WHILE interpret REPEAT ; |
|
|
: include-file ( i*x fid -- j*x ) |
: include-file ( i*x fid -- j*x ) \ file |
push-file loadfile ! |
push-file loadfile ! |
0 loadline ! blk off ['] read-loop catch |
0 loadline ! blk off ['] read-loop catch |
loadfile @ close-file swap 2dup or |
loadfile @ close-file swap 2dup or |
Line 1231 create pathfilenamebuf 256 chars allot \
|
Line 1404 create pathfilenamebuf 256 chars allot \
|
\ ELSE false |
\ ELSE false |
\ THEN ; |
\ THEN ; |
|
|
: open-path-file ( c-addr1 u1 -- file-id c-addr2 u2 ) |
: open-path-file ( c-addr1 u1 -- file-id c-addr2 u2 ) \ gforth |
\ opens a file for reading, searching in the path for it (unless |
\ opens a file for reading, searching in the path for it (unless |
\ the filename contains a slash); c-addr2 u2 is the full filename |
\ the filename contains a slash); c-addr2 u2 is the full filename |
\ (valid until the next call); if the file is not found (or in |
\ (valid until the next call); if the file is not found (or in |
Line 1263 create pathfilenamebuf 256 chars allot \
|
Line 1436 create pathfilenamebuf 256 chars allot \
|
pathfilenamebuf swap ; |
pathfilenamebuf swap ; |
|
|
create included-files 0 , 0 , ( pointer to and count of included files ) |
create included-files 0 , 0 , ( pointer to and count of included files ) |
|
create image-included-files 0 , 0 , ( 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 |
|
|
|
: init-included-files ( -- ) |
|
image-included-files 2@ 2* cells save-string drop ( addr ) |
|
image-included-files 2@ nip included-files 2! ; |
|
|
: included? ( c-addr u -- f ) |
: included? ( c-addr u -- f ) \ gforth |
\ true, iff filename c-addr u is in included-files |
\ true, iff filename c-addr u is in included-files |
included-files 2@ 0 |
included-files 2@ 0 |
?do ( c-addr u addr ) |
?do ( c-addr u addr ) |
Line 1277 create included-files 0 , 0 , ( pointer
|
Line 1457 create included-files 0 , 0 , ( pointer
|
loop |
loop |
2drop drop false ; |
2drop drop false ; |
|
|
: add-included-file ( c-addr u -- ) |
: add-included-file ( c-addr u -- ) \ gforth |
\ add name c-addr u to included-files |
\ add name c-addr u to included-files |
included-files 2@ tuck 1+ 2* cells resize throw |
included-files 2@ tuck 1+ 2* cells resize throw |
swap 2dup 1+ included-files 2! |
swap 2dup 1+ included-files 2! |
2* cells + 2! ; |
2* cells + 2! ; |
|
|
: save-string ( addr1 u -- addr2 u ) |
: save-string ( addr1 u -- addr2 u ) \ gforth |
|
\ !! not a string, but a memblock word |
swap >r |
swap >r |
dup allocate throw |
dup allocate throw |
swap 2dup r> -rot move ; |
swap 2dup r> -rot move ; |
|
|
: included1 ( i*x file-id c-addr u -- j*x ) |
: included1 ( i*x file-id c-addr u -- j*x ) \ gforth |
\ include the file file-id with the name given by c-addr u |
\ include the file file-id with the name given by c-addr u |
loadfilename 2@ >r >r |
loadfilename 2@ >r >r |
save-string 2dup loadfilename 2! add-included-file ( file-id ) |
save-string 2dup loadfilename 2! add-included-file ( file-id ) |
['] include-file catch |
['] include-file catch |
r> r> loadfilename 2! throw ; |
r> r> loadfilename 2! throw ; |
|
|
: included ( i*x addr u -- j*x ) |
: included ( i*x addr u -- j*x ) \ file |
open-path-file included1 ; |
open-path-file included1 ; |
|
|
: required ( i*x addr u -- j*x ) |
: required ( i*x addr u -- j*x ) \ gforth |
\ include the file with the name given by addr u, if it is not |
\ include the file with the name given by addr u, if it is not |
\ included already. Currently this works by comparing the name of |
\ included already. Currently this works by comparing the name of |
\ the file (with path) against the names of earlier included |
\ the file (with path) against the names of earlier included |
Line 1316 create included-files 0 , 0 , ( pointer
|
Line 1497 create included-files 0 , 0 , ( pointer
|
|
|
\ HEX DECIMAL 2may93jaw |
\ HEX DECIMAL 2may93jaw |
|
|
: decimal a base ! ; |
: decimal ( -- ) \ core |
: hex 10 base ! ; |
a base ! ; |
|
: hex ( -- ) \ core-ext |
|
10 base ! ; |
|
|
\ DEPTH 9may93jaw |
\ DEPTH 9may93jaw |
|
|
: depth ( -- +n ) sp@ s0 @ swap - cell / ; |
: depth ( -- +n ) \ core |
: clearstack ( ... -- ) s0 @ sp! ; |
sp@ s0 @ swap - cell / ; |
|
: clearstack ( ... -- ) |
|
s0 @ sp! ; |
|
|
\ INCLUDE 9may93jaw |
\ INCLUDE 9may93jaw |
|
|
: include ( "file" -- ) |
: include ( "file" -- ) \ gforth |
name included ; |
name included ; |
|
|
: require ( "file" -- ) |
: require ( "file" -- ) \ gforth |
name required ; |
name required ; |
|
|
\ RECURSE 17may93jaw |
\ RECURSE 17may93jaw |
|
|
: recurse ( -- ) |
: recurse ( compilation -- ; run-time ?? -- ?? ) \ core |
lastxt compile, ; immediate restrict |
lastxt compile, ; immediate restrict |
: recursive ( -- ) |
: recursive ( -- ) \ gforth |
reveal last off ; immediate |
reveal last off ; immediate |
|
|
\ */MOD */ 17may93jaw |
\ */MOD */ 17may93jaw |
|
|
\ !! I think */mod should have the same rounding behaviour as / - anton |
\ !! I think */mod should have the same rounding behaviour as / - anton |
: */mod >r m* r> sm/rem ; |
: */mod ( n1 n2 n3 -- n4 n5 ) \ core star-slash-mod |
|
>r m* r> sm/rem ; |
|
|
: */ */mod nip ; |
: */ ( n1 n2 n3 -- n4 ) \ core star-slash |
|
*/mod nip ; |
|
|
\ EVALUATE 17may93jaw |
\ EVALUATE 17may93jaw |
|
|
: evaluate ( c-addr len -- ) |
: evaluate ( c-addr len -- ) \ core,block |
push-file dup #tib ! >tib @ swap move |
push-file dup #tib ! >tib @ swap move |
>in off blk off loadfile off -1 loadline ! |
>in off blk off loadfile off -1 loadline ! |
|
|
\ BEGIN interpret >in @ #tib @ u>= UNTIL |
\ BEGIN interpret >in @ #tib @ u>= UNTIL |
['] interpret catch |
['] interpret catch |
pop-file throw ; |
pop-file throw ; |
|
|
|
: abort ( ?? -- ?? ) \ core,exception-ext |
: abort -1 throw ; |
-1 throw ; |
|
|
\+ environment? true ENV" CORE" |
\+ environment? true ENV" CORE" |
\ core wordset is now complete! |
\ core wordset is now complete! |
Line 1381 max-errors 6 * cells allot
|
Line 1567 max-errors 6 * cells allot
|
\ line-number |
\ line-number |
\ Loadfilename ( addr u ) |
\ Loadfilename ( addr u ) |
|
|
: dec. ( n -- ) |
: dec. ( n -- ) \ gforth |
\ print value in decimal representation |
\ print value in decimal representation |
base @ decimal swap . base ! ; |
base @ decimal swap . base ! ; |
|
|
: typewhite ( addr u -- ) |
: typewhite ( addr u -- ) \ gforth |
\ like type, but white space is printed instead of the characters |
\ like type, but white space is printed instead of the characters |
bounds ?do |
bounds ?do |
i c@ 9 = if \ check for tab |
i c@ 9 = if \ check for tab |
Line 1394 max-errors 6 * cells allot
|
Line 1580 max-errors 6 * cells allot
|
bl |
bl |
then |
then |
emit |
emit |
loop |
loop ; |
; |
|
|
|
DEFER DOERROR |
DEFER DOERROR |
|
|
Line 1445 DEFER DOERROR
|
Line 1630 DEFER DOERROR
|
|
|
' (DoError) IS DoError |
' (DoError) IS DoError |
|
|
: quit r0 @ rp! handler off >tib @ >r |
: quit ( ?? -- ?? ) \ core |
BEGIN |
r0 @ rp! handler off >tib @ >r |
postpone [ |
BEGIN |
['] 'quit CATCH dup |
postpone [ |
WHILE |
['] 'quit CATCH dup |
DoError r@ >tib ! |
WHILE |
REPEAT |
DoError r@ >tib ! |
drop r> >tib ! ; |
REPEAT |
|
drop r> >tib ! ; |
|
|
\ Cold 13feb93py |
\ Cold 13feb93py |
|
|
Line 1460 DEFER DOERROR
|
Line 1646 DEFER DOERROR
|
\ : words listwords @ |
\ : words listwords @ |
\ BEGIN @ dup WHILE dup .name REPEAT drop ; |
\ BEGIN @ dup WHILE dup .name REPEAT drop ; |
|
|
: cstring>sstring ( cstring -- addr n ) -1 0 scan 0 swap 1+ /string ; |
: cstring>sstring ( cstring -- addr n ) \ gforth cstring-to-sstring |
: arg ( n -- addr count ) cells argv @ + @ cstring>sstring ; |
-1 0 scan 0 swap 1+ /string ; |
|
: arg ( n -- addr count ) \ gforth |
|
cells argv @ + @ cstring>sstring ; |
: #! postpone \ ; immediate |
: #! postpone \ ; immediate |
|
|
Create pathstring 2 cells allot \ string |
Create pathstring 2 cells allot \ string |
Line 1520 Variable argc
|
Line 1708 Variable argc
|
|
|
Defer 'cold ' noop IS 'cold |
Defer 'cold ' noop IS 'cold |
|
|
: cold ( -- ) |
: cold ( -- ) \ gforth |
pathstring 2@ process-path pathdirs 2! |
pathstring 2@ process-path pathdirs 2! |
0 0 included-files 2! |
init-included-files |
'cold |
'cold |
argc @ 1 > |
argc @ 1 > |
IF |
IF |
Line 1534 Defer 'cold ' noop IS 'cold
|
Line 1722 Defer 'cold ' noop IS 'cold
|
cr |
cr |
THEN |
THEN |
false to script? |
false to script? |
." GNU Forth " version-string type ." , Copyright (C) 1994 Free Software Foundation, Inc." cr |
." GForth " version-string type ." , Copyright (C) 1994 Free Software Foundation, Inc." cr |
." GNU Forth comes with ABSOLUTELY NO WARRANTY; for details type `license'" cr |
." GForth comes with ABSOLUTELY NO WARRANTY; for details type `license'" cr |
." Type `bye' to exit" |
." Type `bye' to exit" |
loadline off quit ; |
loadline off quit ; |
|
|
: license ( -- ) cr |
: license ( -- ) \ gforth |
|
cr |
." This program is free software; you can redistribute it and/or modify" cr |
." This program is free software; you can redistribute it and/or modify" cr |
." it under the terms of the GNU General Public License as published by" cr |
." it under the terms of the GNU General Public License as published by" cr |
." the Free Software Foundation; either version 2 of the License, or" cr |
." the Free Software Foundation; either version 2 of the License, or" cr |
Line 1559 Defer 'cold ' noop IS 'cold
|
Line 1748 Defer 'cold ' noop IS 'cold
|
sp@ dup s0 ! $10 + >tib ! #tib off >in off |
sp@ dup s0 ! $10 + >tib ! #tib off >in off |
rp@ r0 ! fp@ f0 ! cold ; |
rp@ r0 ! fp@ f0 ! cold ; |
|
|
: bye script? 0= IF cr THEN 0 (bye) ; |
: bye ( -- ) \ tools-ext |
|
script? 0= IF cr THEN 0 (bye) ; |
|
|
\ **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 |