version 1.12, 1997/02/01 14:59:31
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version 1.13, 1997/02/06 21:23:01
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Line 50 HEX
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Line 50 HEX
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NIL AConstant NIL \ gforth |
NIL AConstant NIL \ gforth |
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\ Aliases |
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' i Alias r@ |
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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 152 $20 constant restrict-mask
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Line 156 $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 451 hex
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Line 443 hex
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: lp@ ( -- addr ) \ gforth l-p-fetch |
: lp@ ( -- addr ) \ gforth l-p-fetch |
laddr# [ 0 , ] ; |
laddr# [ 0 , ] ; |
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Defer 'catch |
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Defer 'throw |
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Defer 'bounce |
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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 |
fp@ >r |
fp@ >r |
lp@ >r |
lp@ >r |
Line 471 hex
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Line 471 hex
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r> lp! |
r> lp! |
r> fp! |
r> fp! |
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 483 hex
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Line 484 hex
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r> lp! |
r> lp! |
rdrop |
rdrop |
rdrop |
rdrop |
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'throw |
THEN ; |
THEN ; |
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\ ?stack 23feb93py |
\ ?stack 23feb93py |
Line 572 Defer interpreter-notfound ( c-addr coun
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Line 574 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 1069 Defer key ( -- c ) \ core
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Line 1047 Defer key ( -- c ) \ core
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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@ |
: save-mem ( addr1 u -- addr2 u ) \ gforth |
\ r/o 4 chars + over - dup >r swap move r> ; |
\g copy a memory block into a newly allocated region in the heap |
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swap >r |
: bin ( fam1 -- fam2 ) \ file |
dup allocate throw |
1 or ; |
swap 2dup r> -rot move ; |
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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 |
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push-file loadfile ! |
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0 loadline ! blk off ['] read-loop catch |
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loadfile @ close-file swap 2dup or |
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pop-file drop throw throw ; |
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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 |
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\G (valid until the next call); if the file is not found (or in |
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\G case of other errors for each try), -38 (non-existant file) is |
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\G thrown. Opening for other access modes makes little sense, as |
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\G the path will usually contain dirs that are only readable for |
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\G the user |
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\ !! use file-status to determine access mode? |
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2dup absolut-path? |
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if \ the filename contains a slash |
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2dup r/o open-file throw ( c-addr1 u1 file-id ) |
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-rot >r pathfilenamebuf r@ cmove ( file-id R: u1 ) |
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pathfilenamebuf r> EXIT |
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then |
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pathdirs 2@ 0 |
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\ check-file-prefix 0= |
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\ IF pathdirs 2@ 0 |
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?DO ( c-addr1 u1 dirnamep ) |
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dup >r 2@ dup >r pathfilenamebuf swap cmove ( addr u ) |
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2dup pathfilenamebuf r@ chars + swap cmove ( addr u ) |
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pathfilenamebuf over r> + dup >r r/o open-file 0= |
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IF ( addr u file-id ) |
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nip nip r> rdrop 0 LEAVE |
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THEN |
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rdrop drop r> cell+ cell+ |
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LOOP |
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\ ELSE 2dup open-file throw -rot THEN |
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0<> -&38 and throw ( file-id u2 ) |
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pathfilenamebuf swap ; |
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create included-files 0 , 0 , ( pointer to and count of included files ) |
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here ," the terminal" dup c@ swap 1 + swap , A, here 2 cells - |
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create image-included-files 1 , A, ( pointer to and count of included files ) |
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\ included-files points to ALLOCATEd space, while image-included-files |
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\ points to ALLOTed objects, so it survives a save-system |
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: loadfilename ( -- a-addr ) |
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\G a-addr 2@ produces the current file name ( c-addr u ) |
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included-files 2@ drop loadfilename# @ 2* cells + ; |
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: sourcefilename ( -- c-addr u ) \ gforth |
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\G the name of the source file which is currently the input |
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\G source. The result is valid only while the file is being |
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\G loaded. If the current input source is no (stream) file, the |
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\G result is undefined. |
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loadfilename 2@ ; |
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: sourceline# ( -- u ) \ gforth sourceline-number |
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\G the line number of the line that is currently being interpreted |
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\G from a (stream) file. The first line has the number 1. If the |
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\G current input source is no (stream) file, the result is |
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\G undefined. |
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loadline @ ; |
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: init-included-files ( -- ) |
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image-included-files 2@ 2* cells save-mem drop ( addr ) |
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image-included-files 2@ nip included-files 2! ; |
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: included? ( c-addr u -- f ) \ gforth |
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\G true, iff filename c-addr u is in included-files |
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included-files 2@ 0 |
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?do ( c-addr u addr ) |
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dup >r 2@ 2over compare 0= |
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if |
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2drop rdrop unloop |
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true EXIT |
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then |
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r> cell+ cell+ |
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loop |
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2drop drop false ; |
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: add-included-file ( c-addr u -- ) \ gforth |
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\G add name c-addr u to included-files |
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included-files 2@ 2* cells 2 cells extend-mem |
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2/ cell / included-files 2! |
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2! ; |
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\ included-files 2@ tuck 1+ 2* cells resize throw |
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\ swap 2dup 1+ included-files 2! |
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\ 2* cells + 2! ; |
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: included1 ( i*x file-id c-addr u -- j*x ) \ gforth |
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\G include the file file-id with the name given by c-addr u |
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loadfilename# @ >r |
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save-mem add-included-file ( file-id ) |
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included-files 2@ nip 1- loadfilename# ! |
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['] include-file catch |
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r> loadfilename# ! |
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throw ; |
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: included ( i*x addr u -- j*x ) \ file |
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open-path-file included1 ; |
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: 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 |
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\G problems with several paths to the same file (e.g., due to |
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\G links) and we would catch files included with include-file and |
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\G write a require-file. |
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open-path-file 2dup included? |
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if |
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2drop close-file throw |
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else |
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included1 |
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then ; |
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\ HEX DECIMAL 2may93jaw |
\ HEX DECIMAL 2may93jaw |
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Line 1276 create image-included-files 1 , A, ( po
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Line 1078 create image-included-files 1 , A, ( po
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: clearstack ( ... -- ) |
: clearstack ( ... -- ) |
s0 @ sp! ; |
s0 @ sp! ; |
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\ INCLUDE 9may93jaw |
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: include ( "file" -- ) \ gforth |
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name included ; |
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: require ( "file" -- ) \ gforth |
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name required ; |
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\ RECURSE 17may93jaw |
\ RECURSE 17may93jaw |
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: recurse ( compilation -- ; run-time ?? -- ?? ) \ core |
: recurse ( compilation -- ; run-time ?? -- ?? ) \ core |
Line 1417 DEFER DOERROR
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Line 1211 DEFER DOERROR
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\ : .name ( name -- ) name>string type space ; |
\ : .name ( name -- ) name>string type space ; |
\ : words listwords @ |
\ : words listwords @ |
\ BEGIN @ dup WHILE dup .name REPEAT drop ; |
\ BEGIN @ dup WHILE dup .name REPEAT drop ; |
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: cstring>sstring ( cstring -- addr n ) \ gforth cstring-to-sstring |
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-1 0 scan 0 swap 1+ /string ; |
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: arg ( n -- addr count ) \ gforth |
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cells argv @ + @ cstring>sstring ; |
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: #! postpone \ ; immediate |
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Create pathstring 2 cells allot \ string |
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Create pathdirs 2 cells allot \ dir string array, pointer and count |
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Variable argv |
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Variable argc |
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0 Value script? ( -- flag ) |
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: process-path ( addr1 u1 -- addr2 u2 ) |
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\ addr1 u1 is a path string, addr2 u2 is an array of dir strings |
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align here >r |
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BEGIN |
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over >r 0 scan |
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over r> tuck - ( rest-str this-str ) |
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dup |
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IF |
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2dup 1- chars + c@ [char] / <> |
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IF |
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2dup chars + [char] / swap c! |
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1+ |
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THEN |
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2, |
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ELSE |
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2drop |
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THEN |
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dup |
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WHILE |
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1 /string |
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REPEAT |
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2drop |
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here r> tuck - 2 cells / ; |
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: do-option ( addr1 len1 addr2 len2 -- n ) |
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2swap |
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2dup s" -e" compare 0= >r |
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2dup s" --evaluate" compare 0= r> or |
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IF 2drop dup >r ['] evaluate catch |
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?dup IF dup >r DoError r> negate (bye) THEN |
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r> >tib +! 2 EXIT THEN |
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." Unknown option: " type cr 2drop 1 ; |
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: process-args ( -- ) |
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>tib @ >r |
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argc @ 1 |
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?DO |
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I arg over c@ [char] - <> |
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IF |
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required 1 |
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ELSE |
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I 1+ argc @ = IF s" " ELSE I 1+ arg THEN |
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do-option |
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THEN |
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+LOOP |
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r> >tib ! ; |
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Defer 'cold ' noop IS 'cold |
Defer 'cold ' noop IS 'cold |
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: cold ( -- ) \ gforth |
: cold ( -- ) \ gforth |
Line 1487 Defer 'cold ' noop IS 'cold
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Line 1220 Defer 'cold ' noop IS 'cold
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'cold |
'cold |
argc @ 1 > |
argc @ 1 > |
IF |
IF |
true to script? |
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['] process-args catch ?dup |
['] process-args catch ?dup |
IF |
IF |
dup >r DoError cr r> negate (bye) |
dup >r DoError cr r> negate (bye) |
THEN |
THEN |
cr |
cr |
THEN |
THEN |
false to script? |
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." 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'" cr |
." Type `bye' to exit" |
." Type `bye' to exit" |