Diff for /gforth/prims2x.fs between versions 1.66 and 1.69

version 1.66, 2001/01/18 16:44:15 version 1.69, 2001/01/19 21:07:05
Line 58  include ./environ.fs Line 58  include ./environ.fs
   
 include ./gray.fs  include ./gray.fs
   
 100 constant max-effect \ number of things on one side of a stack effect  32 constant max-effect \ number of things on one side of a stack effect
 255 constant maxchar  255 constant maxchar
 maxchar 1+ constant eof-char  maxchar 1+ constant eof-char
 #tab constant tab-char  #tab constant tab-char
Line 150  s" IP" save-mem s" error don't use # on Line 150  s" IP" save-mem s" error don't use # on
   
 \ various variables for storing stuff of one primitive  \ various variables for storing stuff of one primitive
   
 2variable forth-name  struct%
 2variable wordset      cell% 2* field prim-name
 2variable c-name      cell% 2* field prim-wordset
 2variable doc      cell% 2* field prim-c-name
 2variable c-code      cell% 2* field prim-doc
 2variable forth-code      cell% 2* field prim-c-code
 2variable stack-string      cell% 2* field prim-forth-code
 create effect-in  max-effect item% %size * allot      cell% 2* field prim-stack-string
 create effect-out max-effect item% %size * allot      item% max-effect * field prim-effect-in
 variable effect-in-end ( pointer )      item% max-effect * field prim-effect-out
 variable effect-out-end ( pointer )      cell%    field prim-effect-in-end
       cell%    field prim-effect-out-end
   end-struct prim%
   
   create prim prim% %allot
   
   \ global vars
 variable c-line  variable c-line
 2variable c-filename  2variable c-filename
 variable name-line  variable name-line
 2variable name-filename  2variable name-filename
 2variable last-name-filename  2variable last-name-filename
   
 variable primitive-number -10 primitive-number !  
 Variable function-number 0 function-number !  Variable function-number 0 function-number !
   
 \ for several reasons stack items of a word are stored in a wordlist  \ for several reasons stack items of a word are stored in a wordlist
Line 183  variable items Line 187  variable items
 : complement ( set1 -- set2 )  : complement ( set1 -- set2 )
  empty ['] bit-equivalent binary-set-operation ;   empty ['] bit-equivalent binary-set-operation ;
   
 \ the parser  
   
 eof-char max-member \ the whole character set + EOF  
   
 : getinput ( -- n )  
  rawinput @ endrawinput @ =  
  if  
    eof-char  
  else  
    cookedinput @ c@  
  endif ;  
   
 :noname ( n -- )  
  dup bl > if  
   emit space  
  else  
   .  
  endif ;  
 print-token !  
   
 : testchar? ( set -- f )  
  getinput member? ;  
 ' testchar? test-vector !  
   
 : checksyncline ( -- )  
     \ when input points to a newline, check if the next line is a  
     \ sync line.  If it is, perform the appropriate actions.  
     rawinput @ >r  
     s" #line " r@ over compare 0<> if  
         rdrop 1 line +! EXIT  
     endif  
     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )  
     dup c@ bl = if  
         char+ dup c@ [char] " <> abort" sync line syntax"  
         char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!  
         char+  
     endif  
     dup c@ nl-char <> abort" sync line syntax"  
     skipsynclines @ if  
         dup char+ rawinput !  
         rawinput @ c@ cookedinput @ c!  
     endif  
     drop ;  
   
 : print-error-line ( -- )  
     \ print the current line and position  
     line-start @ endrawinput @ over - 2dup nl-char scan drop nip ( start end )  
     over - type cr  
     line-start @ rawinput @ over - typewhite ." ^" cr ;  
       
 : ?nextchar ( f -- )  
     ?not? if  
         outfile-id >r try  
             stderr to outfile-id  
             filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"  
             getinput . cr  
             print-error-line  
             0  
         recover endtry  
         r> to outfile-id throw  
         abort  
     endif  
     rawinput @ endrawinput @ <> if  
         rawinput @ c@  
         1 chars rawinput +!  
         1 chars cookedinput +!  
         nl-char = if  
             checksyncline  
             rawinput @ line-start !  
         endif  
         rawinput @ c@ cookedinput @ c!  
     endif ;  
   
 : charclass ( set "name" -- )  
  ['] ?nextchar terminal ;  
   
 : .. ( c1 c2 -- set )  
  ( creates a set that includes the characters c, c1<=c<=c2 )  
  empty copy-set  
  swap 1+ rot do  
   i over add-member  
  loop ;  
   
 : ` ( -- terminal ) ( use: ` c )  
  ( creates anonymous terminal for the character c )  
  char singleton ['] ?nextchar make-terminal ;  
   
 char a char z ..  char A char Z ..  union char _ singleton union  charclass letter  
 char 0 char 9 ..                                        charclass digit  
 bl singleton tab-char over add-member                   charclass white  
 nl-char singleton eof-char over add-member complement   charclass nonl  
 nl-char singleton eof-char over add-member  
     char : over add-member complement                   charclass nocolonnl  
 bl 1+ maxchar .. char \ singleton complement intersection  
                                                         charclass nowhitebq  
 bl 1+ maxchar ..                                        charclass nowhite  
 char " singleton eof-char over add-member complement    charclass noquote  
 nl-char singleton                                       charclass nl  
 eof-char singleton                                      charclass eof  
   
   
 (( letter (( letter || digit )) **  
 )) <- c-ident ( -- )  
   
 (( ` # ?? (( letter || digit || ` : )) **  
 )) <- stack-ident ( -- )  
   
 (( nowhitebq nowhite ** ))  
 <- forth-ident ( -- )  
   
 Variable forth-flag  
 Variable c-flag  
   
 (( (( ` e || ` E )) {{ start }} nonl **   
    {{ end evaluate }}  
 )) <- eval-comment ( ... -- ... )  
   
 (( (( ` f || ` F )) {{ start }} nonl **   
    {{ end forth-flag @ IF type cr ELSE 2drop THEN }}  
 )) <- forth-comment ( -- )  
   
 (( (( ` c || ` C )) {{ start }} nonl **   
    {{ end c-flag @ IF type cr ELSE 2drop THEN }}  
 )) <- c-comment ( -- )  
   
 (( ` - nonl ** {{   
         forth-flag @ IF ." [ELSE]" cr THEN  
         c-flag @ IF ." #else" cr THEN }}  
 )) <- else-comment  
   
 (( ` + {{ start }} nonl ** {{ end  
         dup  
         IF      c-flag @  
                 IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr  
                 THEN  
                 forth-flag @  
                 IF  ." has? " type ."  [IF]"  cr THEN  
         ELSE    2drop  
             c-flag @      IF  ." #endif"  cr THEN  
             forth-flag @  IF  ." [THEN]"  cr THEN  
         THEN }}  
 )) <- if-comment  
   
 (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body  
   
 (( ` \ comment-body nl )) <- comment ( -- )  
   
 (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **  
 <- stack-items  
   
 (( {{ effect-in }}  stack-items {{ effect-in-end ! }}  
    ` - ` - white **  
    {{ effect-out }} stack-items {{ effect-out-end ! }}  
 )) <- stack-effect ( -- )  
   
 (( {{ s" " doc 2! s" " forth-code 2! s" " wordset 2! }}  
    (( {{ line @ name-line ! filename 2@ name-filename 2! }}  
       {{ start }} forth-ident {{ end 2dup forth-name 2! c-name 2! }}  white ++  
       ` ( white ** {{ start }} stack-effect {{ end stack-string 2! }} ` ) white **  
         (( {{ start }} forth-ident {{ end wordset 2! }} white **  
            (( {{ start }}  c-ident {{ end c-name 2! }} )) ??  
         )) ??  nl  
    ))  
    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " white ** nl )) ??  
    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl white ** )) ** {{ end c-code 2! skipsynclines on }}  
    (( ` :  white ** nl  
       {{ start }} (( nonl ++  nl white ** )) ++ {{ end forth-code 2! }}  
    )) ?? {{ printprim }}  
    (( nl || eof ))  
 )) <- primitive ( -- )  
   
 (( (( comment || primitive || nl white ** )) ** eof ))  
 parser primitives2something  
 warnings @ [IF]  
 .( parser generated ok ) cr  
 [THEN]  
   
 : primfilter ( file-id xt -- )  
 \ fileid is for the input file, xt ( -- ) is for the output word  
  output !  
  here dup rawinput ! dup line-start ! cookedinput !  
  here unused rot read-file throw  
  dup here + endrawinput !  
  allot  
  align  
  checksyncline  
 \ begin  
 \     getinput dup eof-char = ?EXIT emit true ?nextchar  
 \ again ;  
  primitives2something ;  
   
 \ types  \ types
   
 : stack-access ( n stack -- )  : stack-access ( n stack -- )
Line 532  does> ( item -- ) Line 345  does> ( item -- )
   
 : declarations ( -- )  : declarations ( -- )
  wordlist dup items ! set-current   wordlist dup items ! set-current
  effect-in effect-in-end @ declaration-list   prim prim-effect-in prim prim-effect-in-end @ declaration-list
  effect-out effect-out-end @ declaration-list ;   prim prim-effect-out prim prim-effect-out-end @ declaration-list ;
   
 : print-declaration { item -- }  : print-declaration { item -- }
     item item-first @ if      item item-first @ if
Line 542  does> ( item -- ) Line 355  does> ( item -- )
     endif ;      endif ;
   
 : print-declarations ( -- )  : print-declarations ( -- )
     effect-in  effect-in-end  @ ['] print-declaration map-items      prim prim-effect-in  prim prim-effect-in-end  @ ['] print-declaration map-items
     effect-out effect-out-end @ ['] print-declaration map-items ;      prim prim-effect-out prim prim-effect-out-end @ ['] print-declaration map-items ;
           
 : stack-prefix ( stack "prefix" -- )  : stack-prefix ( stack "prefix" -- )
     name tuck nextname create ( stack length ) 2,      name tuck nextname create ( stack length ) 2,
Line 575  does> ( item -- ) Line 388  does> ( item -- )
 : compute-offsets ( -- )  : compute-offsets ( -- )
     data-stack clear-stack  fp-stack clear-stack return-stack clear-stack      data-stack clear-stack  fp-stack clear-stack return-stack clear-stack
     inst-stream clear-stack      inst-stream clear-stack
     effect-in  effect-in-end  @ ['] compute-offset-in  map-items      prim prim-effect-in  prim prim-effect-in-end  @ ['] compute-offset-in  map-items
     effect-out effect-out-end @ ['] compute-offset-out map-items      prim prim-effect-out prim prim-effect-out-end @ ['] compute-offset-out map-items
     inst-stream stack-out @ 0<> abort" # can only be on the input side" ;      inst-stream stack-out @ 0<> abort" # can only be on the input side" ;
   
 : flush-a-tos { stack -- }  : flush-a-tos { stack -- }
Line 608  does> ( item -- ) Line 421  does> ( item -- )
  dup item-type @ type-fetch @ execute ;   dup item-type @ type-fetch @ execute ;
   
 : fetches ( -- )  : fetches ( -- )
     effect-in effect-in-end @ ['] fetch map-items ;      prim prim-effect-in prim prim-effect-in-end @ ['] fetch map-items ;
   
 : stack-pointer-update { stack -- }  : stack-pointer-update { stack -- }
     \ stack grow downwards      \ stack grow downwards
Line 634  does> ( item -- ) Line 447  does> ( item -- )
  dup item-type @ type-store @ execute ;   dup item-type @ type-store @ execute ;
   
 : stores ( -- )  : stores ( -- )
     effect-out effect-out-end @ ['] store map-items ;      prim prim-effect-out prim prim-effect-out-end @ ['] store map-items ;
   
 : output-c-tail ( -- )  : output-c-tail ( -- )
     \ the final part of the generated C code      \ the final part of the generated C code
Line 666  does> ( item -- ) Line 479  does> ( item -- )
 : print-debug-args ( -- )  : print-debug-args ( -- )
     ." #ifdef VM_DEBUG" cr      ." #ifdef VM_DEBUG" cr
     ." if (vm_debug) {" cr      ." if (vm_debug) {" cr
     effect-in effect-in-end @ ['] print-debug-arg map-items      prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
     ." fputc('\n', vm_out);" cr      ." fputc('\n', vm_out);" cr
     ." }" cr      ." }" cr
     ." #endif" cr ;      ." #endif" cr ;
           
 : output-c ( -- )   : output-c ( -- ) 
  ." I_" c-name 2@ type ." :     /* " forth-name 2@ type ."  ( " stack-string 2@ type ." ) */" cr   ." I_" prim prim-c-name 2@ type ." :   /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
  ." /* " doc 2@ type ."  */" cr   ." /* " prim prim-doc 2@ type ."  */" cr
  ." NAME(" quote forth-name 2@ type quote ." )" cr \ debugging   ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
  ." {" cr   ." {" cr
  ." DEF_CA" cr   ." DEF_CA" cr
  declarations  
  compute-offsets \ for everything else  
  print-declarations   print-declarations
  ." NEXT_P0;" cr   ." NEXT_P0;" cr
  flush-tos   flush-tos
Line 687  does> ( item -- ) Line 498  does> ( item -- )
  stack-pointer-updates   stack-pointer-updates
  ." {" cr   ." {" cr
  ." #line " c-line @ . quote c-filename 2@ type quote cr   ." #line " c-line @ . quote c-filename 2@ type quote cr
  c-code 2@ type-c   prim prim-c-code 2@ type-c
  ." }" cr   ." }" cr
  output-c-tail   output-c-tail
  ." }" cr   ." }" cr
Line 703  does> ( item -- ) Line 514  does> ( item -- )
     endif ;      endif ;
   
 : disasm-args ( -- )  : disasm-args ( -- )
     effect-in effect-in-end @ ['] disasm-arg map-items ;      prim prim-effect-in prim prim-effect-in-end @ ['] disasm-arg map-items ;
   
 : output-disasm ( -- )  : output-disasm ( -- )
     \ generate code for disassembling VM instructions      \ generate code for disassembling VM instructions
     ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr      ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
     ."   fputs(" quote forth-name 2@ type quote ." , vm_out);" cr      ."   fputs(" quote prim prim-name 2@ type quote ." , vm_out);" cr
     ." /* " declarations ." */" cr  
     compute-offsets  
     disasm-args      disasm-args
     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr      ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
     ." } else "      ." } else " ;
     1 function-number +! ;  
   
 : gen-arg-parm { item -- }  : gen-arg-parm { item -- }
     item item-stack @ inst-stream = if      item item-stack @ inst-stream = if
Line 723  does> ( item -- ) Line 531  does> ( item -- )
     endif ;      endif ;
   
 : gen-args-parm ( -- )  : gen-args-parm ( -- )
     effect-in effect-in-end @ ['] gen-arg-parm map-items ;      prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-parm map-items ;
   
 : gen-arg-gen { item -- }  : gen-arg-gen { item -- }
     item item-stack @ inst-stream = if      item item-stack @ inst-stream = if
Line 732  does> ( item -- ) Line 540  does> ( item -- )
     endif ;      endif ;
   
 : gen-args-gen ( -- )  : gen-args-gen ( -- )
     effect-in effect-in-end @ ['] gen-arg-gen map-items ;      prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-gen map-items ;
   
 : output-gen ( -- )  : output-gen ( -- )
     \ generate C code for generating VM instructions      \ generate C code for generating VM instructions
     ." /* " declarations ." */" cr      ." void gen_" prim prim-c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
     compute-offsets  
     ." void gen_" c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr  
     ." {" cr      ." {" cr
     ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr      ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
     gen-args-gen      gen-args-gen
     ." }" cr      ." }" cr ;
     1 function-number +! ;  
   
 : stack-used? { stack -- f }  : stack-used? { stack -- f }
     stack stack-in @ stack stack-out @ or 0<> ;      stack stack-in @ stack stack-out @ or 0<> ;
   
 : output-funclabel ( -- )  : output-funclabel ( -- )
   1 function-number +!    ." &I_" prim prim-c-name 2@ type ." ," cr ;
   ." &I_" c-name 2@ type ." ," cr ;  
   
 : output-forthname ( -- )  : output-forthname ( -- )
   1 function-number +!    '" emit prim prim-name 2@ type '" emit ." ," cr ;
   '" emit forth-name 2@ type '" emit ." ," cr ;  
   
 : output-c-func ( -- )  : output-c-func ( -- )
 \ used for word libraries  \ used for word libraries
     1 function-number +!      ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP)      /* " prim prim-name 2@ type
     ." Cell * I_" c-name 2@ type ." (Cell *SP, Cell **FP)      /* " forth-name 2@ type      ."  ( " prim prim-stack-string 2@ type ."  ) */" cr
     ."  ( " stack-string 2@ type ."  ) */" cr      ." /* " prim prim-doc 2@ type ."  */" cr
     ." /* " doc 2@ type ."  */" cr      ." NAME(" quote prim prim-name 2@ type quote ." )" cr
     ." NAME(" quote forth-name 2@ type quote ." )" cr  
     \ debugging      \ debugging
     ." {" cr      ." {" cr
     declarations  
     compute-offsets \ for everything else  
     print-declarations      print-declarations
     inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN      inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
     data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN      data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
Line 778  does> ( item -- ) Line 578  does> ( item -- )
     fp-stack   stack-used? IF ." *FP=fp;" cr THEN      fp-stack   stack-used? IF ." *FP=fp;" cr THEN
     ." {" cr      ." {" cr
     ." #line " c-line @ . quote c-filename 2@ type quote cr      ." #line " c-line @ . quote c-filename 2@ type quote cr
     c-code 2@ type      prim prim-c-code 2@ type
     ." }" cr      ." }" cr
     stores      stores
     fill-tos      fill-tos
Line 787  does> ( item -- ) Line 587  does> ( item -- )
     cr ;      cr ;
   
 : output-label ( -- )    : output-label ( -- )  
     ." (Label)&&I_" c-name 2@ type ." ," cr      ." (Label)&&I_" prim prim-c-name 2@ type ." ," cr ;
     -1 primitive-number +! ;  
   
 : output-alias ( -- )   : output-alias ( -- ) 
     ( primitive-number @ . ." alias " ) ." Primitive " forth-name 2@ type cr      ( primitive-number @ . ." alias " ) ." Primitive " prim prim-name 2@ type cr ;
     -1 primitive-number +! ;  
   
 : output-forth ( -- )    : output-forth ( -- )  
     forth-code @ 0=      prim prim-forth-code @ 0=
     IF          \ output-alias      IF          \ output-alias
         \ this is bad for ec: an alias is compiled if tho word does not exist!          \ this is bad for ec: an alias is compiled if tho word does not exist!
         \ JAW          \ JAW
     ELSE  ." : " forth-name 2@ type ."   ( "      ELSE  ." : " prim prim-name 2@ type ."   ( "
         stack-string 2@ type ." )" cr          prim prim-stack-string 2@ type ." )" cr
         forth-code 2@ type cr          prim prim-forth-code 2@ type cr
         -1 primitive-number +!  
     THEN ;      THEN ;
   
 : output-tag-file ( -- )  : output-tag-file ( -- )
Line 815  does> ( item -- ) Line 612  does> ( item -- )
   
 : output-tag ( -- )  : output-tag ( -- )
     output-tag-file      output-tag-file
     forth-name 2@ 1+ type      prim prim-name 2@ 1+ type
     127 emit      127 emit
     space forth-name 2@ type space      space prim prim-name 2@ type space
     1 emit      1 emit
     name-line @ 0 .r      name-line @ 0 .r
     ." ,0" cr ;      ." ,0" cr ;
Line 825  does> ( item -- ) Line 622  does> ( item -- )
 [IFDEF] documentation  [IFDEF] documentation
 : register-doc ( -- )  : register-doc ( -- )
     get-current documentation set-current      get-current documentation set-current
     forth-name 2@ nextname create      prim prim-name 2@ nextname create
     forth-name 2@ 2,      prim prim-name 2@ 2,
     stack-string 2@ condition-stack-effect 2,      prim prim-stack-string 2@ condition-stack-effect 2,
     wordset 2@ 2,      prim prim-wordset 2@ 2,
     c-name 2@ condition-pronounciation 2,      prim prim-c-name 2@ condition-pronounciation 2,
     doc 2@ 2,      prim prim-doc 2@ 2,
     set-current ;      set-current ;
 [THEN]  [THEN]
   
   
   \ combining instructions
   
   \ The input should look like this:
   
   \ lit_+ = lit +
   
   \ The output should look like this:
   
   \  I_lit_+:
   \  {
   \  DEF_CA
   \  Cell _x_ip0;
   \  Cell _x_sp0;
   \  Cell _x_sp1;
   \  NEXT_P0;
   \  _x_ip0 = (Cell) IPTOS;
   \  _x_sp0 = (Cell) spTOS;
   \  INC_IP(1);
   \  /* sp += 0; */
   \  /* lit ( #w -- w ) */
   \  /*  */
   \  NAME("lit")
   \  {
   \  Cell w;
   \  w = (Cell) _x_ip0;
   \  #ifdef VM_DEBUG
   \  if (vm_debug) {
   \  fputs(" w=", vm_out); printarg_w (w);
   \  fputc('\n', vm_out);
   \  }
   \  #endif
   \  {
   \  #line 136 "./prim"
   \  }
   \  _x_sp1 = (Cell)w;
   \  }
   \  I_plus:      /* + ( n1 n2 -- n ) */
   \  /*  */
   \  NAME("+")
   \  {
   \  DEF_CA
   \  Cell n1;
   \  Cell n2;
   \  Cell n;
   \  NEXT_P0;
   \  n1 = (Cell) _x_sp0;
   \  n2 = (Cell) _x_sp1;
   \  #ifdef VM_DEBUG
   \  if (vm_debug) {
   \  fputs(" n1=", vm_out); printarg_n (n1);
   \  fputs(" n2=", vm_out); printarg_n (n2);
   \  fputc('\n', vm_out);
   \  }
   \  #endif
   \  {
   \  #line 516 "./prim"
   \  n = n1+n2;
   \  }
   \  NEXT_P1;
   \  _x_sp0 = (Cell)n;
   \  NEXT_P2;
   \  }
   \  NEXT_P1;
   \  spTOS = (Cell)_x_sp0;
   \  NEXT_P2;
   
   
   \ the parser
   
   eof-char max-member \ the whole character set + EOF
   
   : getinput ( -- n )
    rawinput @ endrawinput @ =
    if
      eof-char
    else
      cookedinput @ c@
    endif ;
   
   :noname ( n -- )
    dup bl > if
     emit space
    else
     .
    endif ;
   print-token !
   
   : testchar? ( set -- f )
    getinput member? ;
   ' testchar? test-vector !
   
   : checksyncline ( -- )
       \ when input points to a newline, check if the next line is a
       \ sync line.  If it is, perform the appropriate actions.
       rawinput @ >r
       s" #line " r@ over compare 0<> if
           rdrop 1 line +! EXIT
       endif
       0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
       dup c@ bl = if
           char+ dup c@ [char] " <> abort" sync line syntax"
           char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
           char+
       endif
       dup c@ nl-char <> abort" sync line syntax"
       skipsynclines @ if
           dup char+ rawinput !
           rawinput @ c@ cookedinput @ c!
       endif
       drop ;
   
   : print-error-line ( -- )
       \ print the current line and position
       line-start @ endrawinput @ over - 2dup nl-char scan drop nip ( start end )
       over - type cr
       line-start @ rawinput @ over - typewhite ." ^" cr ;
       
   : ?nextchar ( f -- )
       ?not? if
           outfile-id >r try
               stderr to outfile-id
               filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"
               getinput . cr
               print-error-line
               0
           recover endtry
           r> to outfile-id throw
           abort
       endif
       rawinput @ endrawinput @ <> if
           rawinput @ c@
           1 chars rawinput +!
           1 chars cookedinput +!
           nl-char = if
               checksyncline
               rawinput @ line-start !
           endif
           rawinput @ c@ cookedinput @ c!
       endif ;
   
   : charclass ( set "name" -- )
    ['] ?nextchar terminal ;
   
   : .. ( c1 c2 -- set )
    ( creates a set that includes the characters c, c1<=c<=c2 )
    empty copy-set
    swap 1+ rot do
     i over add-member
    loop ;
   
   : ` ( -- terminal ) ( use: ` c )
    ( creates anonymous terminal for the character c )
    char singleton ['] ?nextchar make-terminal ;
   
   char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
   char 0 char 9 ..                                        charclass digit
   bl singleton tab-char over add-member                   charclass white
   nl-char singleton eof-char over add-member complement   charclass nonl
   nl-char singleton eof-char over add-member
       char : over add-member complement                   charclass nocolonnl
   bl 1+ maxchar .. char \ singleton complement intersection
                                                           charclass nowhitebq
   bl 1+ maxchar ..                                        charclass nowhite
   char " singleton eof-char over add-member complement    charclass noquote
   nl-char singleton                                       charclass nl
   eof-char singleton                                      charclass eof
   
   
   (( letter (( letter || digit )) **
   )) <- c-ident ( -- )
   
   (( ` # ?? (( letter || digit || ` : )) **
   )) <- stack-ident ( -- )
   
   (( nowhitebq nowhite ** ))
   <- forth-ident ( -- )
   
   Variable forth-flag
   Variable c-flag
   
   (( (( ` e || ` E )) {{ start }} nonl ** 
      {{ end evaluate }}
   )) <- eval-comment ( ... -- ... )
   
   (( (( ` f || ` F )) {{ start }} nonl ** 
      {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
   )) <- forth-comment ( -- )
   
   (( (( ` c || ` C )) {{ start }} nonl ** 
      {{ end c-flag @ IF type cr ELSE 2drop THEN }}
   )) <- c-comment ( -- )
   
   (( ` - nonl ** {{ 
           forth-flag @ IF ." [ELSE]" cr THEN
           c-flag @ IF ." #else" cr THEN }}
   )) <- else-comment
   
   (( ` + {{ start }} nonl ** {{ end
           dup
           IF      c-flag @
                   IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr
                   THEN
                   forth-flag @
                   IF  ." has? " type ."  [IF]"  cr THEN
           ELSE    2drop
               c-flag @      IF  ." #endif"  cr THEN
               forth-flag @  IF  ." [THEN]"  cr THEN
           THEN }}
   )) <- if-comment
   
   (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
   
   (( ` \ comment-body nl )) <- comment ( -- )
   
   (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
   <- stack-items
   
   (( {{ prim prim-effect-in }}  stack-items {{ prim prim-effect-in-end ! }}
      ` - ` - white **
      {{ prim prim-effect-out }} stack-items {{ prim prim-effect-out-end ! }}
   )) <- stack-effect ( -- )
   
   ((
      ` ( white ** {{ start }} stack-effect {{ end prim prim-stack-string 2! }} ` ) white **
      (( {{ start }} forth-ident {{ end prim prim-wordset 2! }} white **
         (( {{ start }}  c-ident {{ end prim prim-c-name 2! }} )) ??
      )) ??  nl
      (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- prim prim-doc 2! }} ` " white ** nl )) ??
      {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl white ** )) ** {{ end prim prim-c-code 2! skipsynclines on }}
      (( ` :  white ** nl
         {{ start }} (( nonl ++  nl white ** )) ++ {{ end prim prim-forth-code 2! }}
      )) ?? {{  declarations compute-offsets printprim 1 function-number +! }}
      (( nl || eof ))
   )) <- simple-primitive ( -- )
   
   (( ` = (( white ++ forth-ident )) ++ (( nl || eof ))
   )) <- combined-primitive
   
   (( {{ s" " prim prim-doc 2! s" " prim prim-forth-code 2! s" " prim prim-wordset 2!
         line @ name-line ! filename 2@ name-filename 2!
         start }} forth-ident {{ end 2dup prim prim-name 2! prim prim-c-name 2! }}  white ++
      (( simple-primitive || combined-primitive ))
   )) <- primitive ( -- )
   
   (( (( comment || primitive || nl white ** )) ** eof ))
   parser primitives2something
   warnings @ [IF]
   .( parser generated ok ) cr
   [THEN]
   
   : primfilter ( addr u -- )
       \ process the string at addr u
       over dup rawinput ! dup line-start ! cookedinput !
       + endrawinput !
       checksyncline
       primitives2something ;    
   
 : process-file ( addr u xt -- )  : process-file ( addr u xt -- )
     >r      output !
     save-mem 2dup filename 2!      save-mem 2dup filename 2!
     0 function-number !      slurp-file
     r/o open-file abort" cannot open file"  
     warnings @ if      warnings @ if
         ." ------------ CUT HERE -------------" cr  endif          ." ------------ CUT HERE -------------" cr  endif
     r> primfilter ;      primfilter ;
   
 : process      ( xt -- )  : process      ( xt -- )
     bl word count rot      bl word count rot

Removed from v.1.66  
changed lines
  Added in v.1.69


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