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Diff for /gforth/Attic/kernal.fs between versions 1.46 and 1.50

version 1.46, 1995/11/07 18:06:47 version 1.50, 1996/01/07 17:22:12
Line 142  DOES> ( n -- )  + c@ ; Line 142  DOES> ( n -- )  + c@ ;
   
 \ name> found                                          17dec92py  \ name> found                                          17dec92py
   
 : (name>)  ( nfa -- cfa )  : (name>)  ( nfa+cell -- cfa )
     count  $1F and  +  cfaligned ;      1 cells - name>string +  cfaligned ;
 : name>    ( nfa -- cfa ) \ gforth  : name>    ( nfa -- cfa ) \ gforth
     cell+      cell+
     dup  (name>) swap  c@ $80 and 0= IF  @ THEN ;      dup  (name>) swap  c@ $80 and 0= IF  @ THEN ;
Line 158  DOES> ( n -- )  + c@ ; Line 158  DOES> ( n -- )  + c@ ;
   
 \ : (find) ( addr count nfa1 -- nfa2 / false )  \ : (find) ( addr count nfa1 -- nfa2 / false )
 \   BEGIN  dup  WHILE  dup >r  \   BEGIN  dup  WHILE  dup >r
 \          cell+ count $1F and dup >r 2over r> =  \          name>string dup >r 2over r> =
 \          IF  -text  0= IF  2drop r> EXIT  THEN  \          IF  -text  0= IF  2drop r> EXIT  THEN
 \          ELSE  2drop drop  THEN  r> @  \          ELSE  2drop drop  THEN  r> @
 \   REPEAT nip nip ;  \   REPEAT nip nip ;
Line 1264  G -1 warnings T ! Line 1264  G -1 warnings T !
 0A constant #lf ( -- c ) \ gforth  0A constant #lf ( -- c ) \ gforth
   
 : bell  #bell emit ;  : bell  #bell emit ;
   : cr ( -- ) \ core
       \ emit a newline
       #lf ( sic! ) emit ;
   
 \ : backspaces  0 ?DO  #bs emit  LOOP ;  \ : backspaces  0 ?DO  #bs emit  LOOP ;
 : >string  ( span addr pos1 -- span addr pos1 addr2 len )  : >string  ( span addr pos1 -- span addr pos1 addr2 len )
Line 1326  Defer emit ( c -- ) \ core Line 1329  Defer emit ( c -- ) \ core
 Defer key ( -- c ) \ core  Defer key ( -- c ) \ core
 ' (key) IS key  ' (key) IS key
   
 \ : form  ( -- rows cols )  &24 &80 ;  
 \ form should be implemented using TERMCAPS or CURSES  
 \ : rows  form drop ;  
 \ : cols  form nip  ;  
   
 \ Query                                                07apr93py  \ Query                                                07apr93py
   
 : refill ( -- flag ) \ core-ext,block-ext,file-ext  : refill ( -- flag ) \ core-ext,block-ext,file-ext
Line 1338  Defer key ( -- c ) \ core Line 1336  Defer key ( -- c ) \ core
   tib /line    tib /line
   loadfile @ ?dup    loadfile @ ?dup
   IF    read-line throw    IF    read-line throw
   ELSE  loadline @ 0< IF 2drop false EXIT THEN    ELSE  sourceline# 0< IF 2drop false EXIT THEN
         accept true          accept true
   THEN    THEN
   1 loadline +!    1 loadline +!
Line 1380  create nl$ 1 c, A c, 0 c, \ gnu includes Line 1378  create nl$ 1 c, A c, 0 c, \ gnu includes
 \ include-file                                         07apr93py  \ include-file                                         07apr93py
   
 : push-file  ( -- )  r>  : push-file  ( -- )  r>
   loadline @ >r loadfile @ >r    sourceline# >r  loadfile @ >r
   blk @ >r >tib @ >r  #tib @ dup >r  >tib +!  >in @ >r  >r ;    blk @ >r  tibstack @ >r  >tib @ >r  #tib @ >r
     >tib @ tibstack @ = IF  r@ tibstack +!  THEN
     tibstack @ >tib ! >in @ >r  >r ;
   
 : pop-file   ( throw-code -- throw-code )  : pop-file   ( throw-code -- throw-code )
   dup IF    dup IF
          source >in @ loadline @ loadfilename 2@           source >in @ sourceline# sourcefilename
          error-stack dup @ dup 1+           error-stack dup @ dup 1+
          max-errors 1- min error-stack !           max-errors 1- min error-stack !
          6 * cells + cell+           6 * cells + cell+
Line 1394  create nl$ 1 c, A c, 0 c, \ gnu includes Line 1394  create nl$ 1 c, A c, 0 c, \ gnu includes
          -1 cells +LOOP           -1 cells +LOOP
   THEN    THEN
   r>    r>
   r> >in !  r> #tib !  r> >tib !  r> blk !    r> >in !  r> #tib !  r> >tib !  r> tibstack !  r> blk !
   r> loadfile ! r> loadline !  >r ;    r> loadfile ! r> loadline !  >r ;
   
 : read-loop ( i*x -- j*x )  : read-loop ( i*x -- j*x )
Line 1453  create pathfilenamebuf 256 chars allot \ Line 1453  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 )  here ," the terminal" dup c@ swap 1 + swap , A, here 2 cells -
   create image-included-files  1 , A, ( pointer to and count of included files )
 \ included-files points to ALLOCATEd space, while image-included-files  \ included-files points to ALLOCATEd space, while image-included-files
 \ points to ALLOTed objects, so it survives a save-system  \ points to ALLOTed objects, so it survives a save-system
   
Line 1461  create image-included-files 0 , 0 , ( po Line 1462  create image-included-files 0 , 0 , ( po
     \ a-addr 2@ produces the current file name ( c-addr u )      \ a-addr 2@ produces the current file name ( c-addr u )
     included-files 2@ drop loadfilename# @ 2* cells + ;      included-files 2@ drop loadfilename# @ 2* cells + ;
   
   : sourcefilename ( -- c-addr u ) \ gforth
       \ the name of the source file which is currently the input
       \ source.  The result is valid only while the file is being
       \ loaded.  If the current input source is no (stream) file, the
       \ result is undefined.
       loadfilename 2@ ;
   
   : sourceline# ( -- u ) \ gforth         sourceline-number
       \ the line number of the line that is currently being interpreted
       \ from a (stream) file. The first line has the number 1. If the
       \ current input source is no (stream) file, the result is
       \ undefined.
       loadline @ ;
   
 : init-included-files ( -- )  : init-included-files ( -- )
     image-included-files 2@ 2* cells save-string drop ( addr )      image-included-files 2@ 2* cells save-string drop ( addr )
     image-included-files 2@ nip included-files 2! ;      image-included-files 2@ nip included-files 2! ;
Line 1559  create image-included-files 0 , 0 , ( po Line 1574  create image-included-files 0 , 0 , ( po
 \ EVALUATE                                              17may93jaw  \ EVALUATE                                              17may93jaw
   
 : evaluate ( c-addr len -- ) \ core,block  : evaluate ( c-addr len -- ) \ core,block
   push-file  dup #tib ! >tib @ swap move    push-file  #tib ! >tib !
   >in off blk off loadfile off -1 loadline !    >in off blk off loadfile off -1 loadline !
 \  BEGIN  interpret  >in @ #tib @ u>= UNTIL  
   ['] interpret catch    ['] interpret catch
   pop-file throw ;    pop-file throw ;
   
Line 1628  DEFER DOERROR Line 1642  DEFER DOERROR
 ;  ;
   
 : (DoError) ( throw-code -- )  : (DoError) ( throw-code -- )
   loadline @ IF    sourceline# IF
                source >in @ loadline @ 0 0 .error-frame                 source >in @ sourceline# 0 0 .error-frame
   THEN    THEN
   error-stack @ 0 ?DO    error-stack @ 0 ?DO
     -1 error-stack +!      -1 error-stack +!
Line 1659  DEFER DOERROR Line 1673  DEFER DOERROR
         postpone [          postpone [
         ['] 'quit CATCH dup          ['] 'quit CATCH dup
     WHILE      WHILE
         DoError r@ >tib !          DoError r@ >tib ! r@ tibstack !
     REPEAT      REPEAT
     drop r> >tib ! ;      drop r> >tib ! ;
   
 \ Cold                                                 13feb93py  \ Cold                                                 13feb93py
   
 \ : .name ( name -- ) cell+ count $1F and 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 ;
   
Line 1745  Defer 'cold ' noop IS 'cold Line 1759  Defer 'cold ' noop IS 'cold
         cr          cr
     THEN      THEN
     false to script?      false to script?
     ." GForth " version-string type ." , Copyright (C) 1994 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"
     loadline off quit ;      loadline off quit ;
Line 1768  Defer 'cold ' noop IS 'cold Line 1782  Defer 'cold ' noop IS 'cold
   
 : boot ( path **argv argc -- )  : boot ( path **argv argc -- )
   argc ! argv ! cstring>sstring pathstring 2!  main-task up!    argc ! argv ! cstring>sstring pathstring 2!  main-task up!
   sp@ dup s0 ! $10 + >tib ! #tib off >in off    sp@ dup s0 ! $10 + dup >tib ! tibstack ! #tib off >in off
   rp@ r0 !  fp@ f0 !  cold ;    rp@ r0 !  fp@ f0 !  ['] cold catch DoError bye ;
   
 : bye ( -- ) \ tools-ext  : bye ( -- ) \ tools-ext
     script? 0= IF  cr  THEN  0 (bye) ;      script? 0= IF  cr  THEN  0 (bye) ;
Removed from v.1.46  
changed lines
  Added in v.1.50

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