Diff for /gforth/prims2x.fs between versions 1.49 and 1.68

version 1.49, 2000/11/10 10:04:20 version 1.68, 2001/01/18 19:43:02
Line 68  variable rawinput \ pointer to next char Line 68  variable rawinput \ pointer to next char
 variable endrawinput \ pointer to the end of the input (the char after the last)  variable endrawinput \ pointer to the end of the input (the char after the last)
 variable cookedinput \ pointer to the next char to be parsed  variable cookedinput \ pointer to the next char to be parsed
 variable line \ line number of char pointed to by input  variable line \ line number of char pointed to by input
 1 line !  variable line-start \ pointer to start of current line (for error messages)
   0 line !
 2variable filename \ filename of original input file  2variable filename \ filename of original input file
 0 0 filename 2!  0 0 filename 2!
 2variable f-comment  2variable f-comment
Line 82  skipsynclines on Line 83  skipsynclines on
 : end ( addr -- addr u )  : end ( addr -- addr u )
  cookedinput @ over - ;   cookedinput @ over - ;
   
   : quote ( -- )
       [char] " emit ;
   
 variable output \ xt ( -- ) of output word  variable output \ xt ( -- ) of output word
   
 : printprim ( -- )  : printprim ( -- )
  output @ execute ;   output @ execute ;
   
 \ stack types  
   
 struct%  struct%
     cell% 2* field stack-pointer \ stackpointer name      cell% 2* field stack-pointer \ stackpointer name
     cell% 2* field stack-cast \ cast string for assignments to stack elements      cell% 2* field stack-cast \ cast string for assignments to stack elements
       cell%    field stack-in-index-xt \ ( in-size item -- in-index )
     cell%    field stack-in  \ number of stack items in effect in      cell%    field stack-in  \ number of stack items in effect in
     cell%    field stack-out \ number of stack items in effect out      cell%    field stack-out \ number of stack items in effect out
 end-struct stack%  end-struct stack%
   
   struct%
    cell% 2* field item-name   \ name, excluding stack prefixes
    cell%    field item-stack  \ descriptor for the stack used, 0 is default
    cell%    field item-type   \ descriptor for the item type
    cell%    field item-offset \ offset in stack items, 0 for the deepest element
    cell%    field item-first  \ true if this is the first occurence of the item
   end-struct item%
   
   struct%
       cell% 2* field type-c-name
       cell%    field type-stack \ default stack
       cell%    field type-size  \ size of type in stack items
       cell%    field type-fetch \ xt of fetch code generator ( item -- )
       cell%    field type-store \ xt of store code generator ( item -- )
   end-struct type%
   
   : stack-in-index ( in-size item -- in-index )
       item-offset @ - 1- ;
   
   : inst-in-index ( in-size item -- in-index )
       nip dup item-offset @ swap item-type @ type-size @ + 1- ;
   
 : make-stack ( addr-ptr u1 addr-cast u2 "stack-name" -- )  : make-stack ( addr-ptr u1 addr-cast u2 "stack-name" -- )
     create stack% %allot >r      create stack% %allot >r
     save-mem r@ stack-cast 2!      save-mem r@ stack-cast 2!
     save-mem r> stack-pointer 2! ;      save-mem r@ stack-pointer 2! 
       ['] stack-in-index r> stack-in-index-xt ! ;
   
 s" sp" save-mem s" (Cell)" make-stack data-stack   s" sp" save-mem s" (Cell)" make-stack data-stack 
 s" fp" save-mem s" "       make-stack fp-stack  s" fp" save-mem s" "       make-stack fp-stack
   s" rp" save-mem s" (Cell)" make-stack return-stack
   s" IP" save-mem s" error don't use # on results" make-stack inst-stream
   ' inst-in-index inst-stream stack-in-index-xt !
 \ !! initialize stack-in and stack-out  \ !! initialize stack-in and stack-out
   
 \ stack items  \ stack items
   
 struct%  
  cell% 2* field item-name   \ name, excluding stack prefixes  
  cell%    field item-stack  \ descriptor for the stack used, 0 is default  
  cell%    field item-type   \ descriptor for the item type  
  cell%    field item-offset \ offset in stack items, 0 for the deepest element  
 end-struct item%  
   
 : init-item ( addr u addr1 -- )  : init-item ( addr u addr1 -- )
     \ initialize item at addr1 with name addr u      \ initialize item at addr1 with name addr u
     \ !! remove stack prefix      \ !! remove stack prefix
     dup item% %size erase      dup item% %size erase
     item-name 2! ;      item-name 2! ;
   
   : map-items { addr end xt -- }
       \ perform xt for all items in array addr...end
       end addr ?do
           i xt execute
       item% %size +loop ;
   
 \ various variables for storing stuff of one primitive  \ various variables for storing stuff of one primitive
   
 2variable forth-name  2variable forth-name
Line 139  variable name-line Line 167  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 155  variable items Line 182  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 ;  
   
 : ?nextchar ( f -- )  
     ?not? if  
         filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"  
         getinput . cr  
         rawinput @ endrawinput @ over - 100 min type cr  
         abort  
     endif  
     rawinput @ endrawinput @ <> if  
         rawinput @ c@  
         1 chars rawinput +!  
         1 chars cookedinput +!  
         nl-char = if  
             checksyncline  
         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-name ( -- )  
   
 (( nowhitebq nowhite ** ))  
 <- name ( -- )  
   
 Variable forth-flag  
 Variable c-flag  
   
 (( (( ` 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  
   
 (( (( forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body  
   
 (( ` \ comment-body nl )) <- comment ( -- )  
   
 (( {{ effect-in }} (( {{ start }} c-name {{ end 2 pick init-item item% %size + }} white ** )) ** {{ effect-in-end ! }}  
    ` - ` - white **  
    {{ effect-out }} (( {{ start }} c-name {{ end 2 pick init-item item% %size + }} white ** )) ** {{ effect-out-end ! }}  
 )) <- stack-effect ( -- )  
   
 (( {{ s" " doc 2! s" " forth-code 2! }}  
    (( {{ line @ name-line ! filename 2@ name-filename 2! }}  
       {{ start }} name {{ end 2dup forth-name 2! c-name 2! }}  white ++  
       ` ( white ** {{ start }} stack-effect {{ end stack-string 2! }} ` ) white **  
         {{ start }} name {{ end wordset 2! }} white **  
         (( {{ start }}  c-name {{ end c-name 2! }} )) ??  nl  
    ))  
    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " nl )) ??  
    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl )) ** {{ end c-code 2! skipsynclines on }}  
    (( ` :  nl  
       {{ start }} (( nonl ++  nl )) ++ {{ end forth-code 2! }}  
    )) ?? {{ printprim }}  
    (( nl || eof ))  
 )) <- primitive ( -- )  
   
 (( (( comment || primitive || nl )) ** 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 ! 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
   
 struct%  
     cell% 2* field type-c-name  
     cell%    field type-stack \ default stack  
     cell%    field type-size  \ size of type in stack items  
     cell%    field type-fetch \ xt of fetch code generator ( item -- )  
     cell%    field type-store \ xt of store code generator ( item -- )  
 end-struct type%  
   
 : stack-access ( n stack -- )  : stack-access ( n stack -- )
     \ print a stack access at index n of stack      \ print a stack access at index n of stack
     stack-pointer 2@ type      stack-pointer 2@ type
Line 343  end-struct type% Line 194  end-struct type%
         drop ." TOS"          drop ." TOS"
     endif ;      endif ;
   
 : item-in-index ( item -- n )  : item-in-index { item -- n }
     \ n is the index of item (in the in-effect)      \ n is the index of item (in the in-effect)
     >r r@ item-stack @ stack-in @ r> item-offset @ - 1- ;      item item-stack @ dup >r stack-in @ ( in-size r:stack )
       item r> stack-in-index-xt @ execute ;
   
 : fetch-single ( item -- )  : fetch-single ( item -- )
  \ fetch a single stack item from its stack   \ fetch a single stack item from its stack
Line 362  end-struct type% Line 214  end-struct type%
  >r   >r
  ." FETCH_DCELL("   ." FETCH_DCELL("
  r@ item-name 2@ type ." , "   r@ item-name 2@ type ." , "
  r@ item-in-index r@ item-stack @ 2dup stack-access   r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-access
  ." , "                      -1 under+ stack-access   ." , "                      -1 under+ ." (Cell)" stack-access
  ." );" cr   ." );" cr
  rdrop ;   rdrop ;
   
Line 416  end-struct type% Line 268  end-struct type%
  ." );" cr   ." );" cr
  rdrop ;   rdrop ;
   
   : single ( -- xt1 xt2 n )
       ['] fetch-single ['] store-single 1 ;
   
 : single-type ( -- xt1 xt2 n stack )  : double ( -- xt1 xt2 n )
  ['] fetch-single ['] store-single 1 data-stack ;      ['] fetch-double ['] store-double 2 ;
   
 : double-type ( -- xt1 xt2 n stack )  
  ['] fetch-double ['] store-double 2 data-stack ;  
   
 : float-type ( -- xt1 xt2 n stack )  
  ['] fetch-single ['] store-single 1 fp-stack ;  
   
 : s, ( addr u -- )  : s, ( addr u -- )
 \ allocate a string  \ allocate a string
  here swap dup allot move ;   here swap dup allot move ;
   
 : starts-with { addr u xt1 xt2 n stack -- } ( "prefix" -- )  wordlist constant prefixes
   
   : declare ( addr "name" -- )
   \ remember that there is a stack item at addr called name
    create , ;
   
   : !default ( w addr -- )
       dup @ if
           2drop \ leave nonzero alone
       else
           !
       endif ;
   
   : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
     \ describes a type      \ describes a type
     \ addr u specifies the C type name      \ addr u specifies the C type name
     \ stack effect entries of the type start with prefix      \ stack effect entries of the type start with prefix
Line 442  end-struct type% Line 303  end-struct type%
     stack r@ type-stack !      stack r@ type-stack !
     rdrop ;      rdrop ;
   
 wordlist constant types  : type-prefix ( xt1 xt2 n stack "prefix" -- )
 get-current      create-type
 types set-current  does> ( item -- )
       \ initialize item
 s" Bool"        single-type starts-with f      { item typ }
 s" Char"        single-type starts-with c      typ item item-type !
 s" Cell"        single-type starts-with n      typ type-stack @ item item-stack !default
 s" Cell"        single-type starts-with w      item item-name 2@ items @ search-wordlist 0= if \ new name
 s" UCell"       single-type starts-with u          item item-name 2@ nextname item declare
 s" DCell"       double-type starts-with d          item item-first on
 s" UDCell"      double-type starts-with ud          \ typ type-c-name 2@ type space type  ." ;" cr
 s" Float"       float-type  starts-with r      else
 s" Cell *"      single-type starts-with a_          drop
 s" Char *"      single-type starts-with c_          item item-first off
 s" Float *"     single-type starts-with f_      endif ;
 s" DFloat *"    single-type starts-with df_  
 s" SFloat *"    single-type starts-with sf_  
 s" Xt"          single-type starts-with xt  
 s" WID"         single-type starts-with wid  
 s" struct F83Name *"    single-type starts-with f83name  
   
 set-current  
   
 : get-type ( addr1 u1 -- type-descr )  
 \ get the type of the name in addr1 u1  
 \ type-descr is a pointer to a type-descriptor  
  0 swap ?do  
    dup i types search-wordlist  
    if \ ok, we have the type ( addr1 xt )  
      execute nip  
      UNLOOP EXIT  
    endif  
  -1 s+loop  
  \ we did not find a type, abort  
  true abort" unknown type prefix" ;  
   
 : declare ( addr "name" -- )  : execute-prefix ( item addr1 u1 -- )
 \ remember that there is a stack item at addr called name      \ execute the word ( item -- ) associated with the longest prefix
  create , ;      \ of addr1 u1
       0 swap ?do
           dup i prefixes search-wordlist
           if \ ok, we have the type ( item addr1 xt )
               nip execute
               UNLOOP EXIT
           endif
           -1 s+loop
       \ we did not find a type, abort
       true abort" unknown prefix" ;
   
 : declaration ( item -- )  : declaration ( item -- )
  dup item-name 2@ items @ search-wordlist      dup item-name 2@ execute-prefix ;
  if \ already declared ( item xt )  
      execute @ 2dup item-type @ swap item-type !  
      item-stack @ swap item-stack ! \ !! does not generalize to stack prefixes  
  else ( addr )  
    dup item-name 2@ nextname dup declare ( addr )  
    dup >r item-name 2@ 2dup get-type ( addr1 u type-descr )  
    dup type-stack @ r@ item-stack ! \ !! only if item-stack @ 0=  
    dup r> item-type ! ( addr1 u type-descr )  
    type-c-name 2@ type space type ." ;" cr  
  endif ;  
   
 : declaration-list ( addr1 addr2 -- )  : declaration-list ( addr1 addr2 -- )
  swap ?do      ['] declaration map-items ;
   i declaration  
  item% %size +loop ;  
   
 : declarations ( -- )  : declarations ( -- )
  wordlist dup items ! set-current   wordlist dup items ! set-current
  effect-in effect-in-end @ declaration-list   effect-in effect-in-end @ declaration-list
  effect-out effect-out-end @ declaration-list ;   effect-out effect-out-end @ declaration-list ;
   
   : print-declaration { item -- }
       item item-first @ if
           item item-type @ type-c-name 2@ type space
           item item-name 2@ type ." ;" cr
       endif ;
   
   : print-declarations ( -- )
       effect-in  effect-in-end  @ ['] print-declaration map-items
       effect-out effect-out-end @ ['] print-declaration map-items ;
       
   : stack-prefix ( stack "prefix" -- )
       name tuck nextname create ( stack length ) 2,
   does> ( item -- )
       2@ { item stack prefix-length }
       item item-name 2@ prefix-length /string item item-name 2!
       stack item item-stack !
       item declaration ;
   
 \ offset computation  \ offset computation
 \ the leftmost (i.e. deepest) item has offset 0  \ the leftmost (i.e. deepest) item has offset 0
 \ the rightmost item has the highest offset  \ the rightmost item has the highest offset
Line 515  set-current Line 371  set-current
     item item-stack @ xt execute dup @ >r +!      item item-stack @ xt execute dup @ >r +!
     r> item item-offset ! ;      r> item item-offset ! ;
   
 : compute-list ( addr1 addr2 xt -- )  : compute-offset-in ( addr1 addr2 -- )
     { xt }      ['] stack-in compute-offset ;
     swap u+do  
         i xt compute-offset  : compute-offset-out ( addr1 addr2 -- )
     item% %size +loop ;      ['] stack-out compute-offset ;
   
 : clear-stack { -- }  : clear-stack { -- }
     dup stack-in off stack-out off ;      dup stack-in off stack-out off ;
   
   
 : compute-offsets ( -- )  : compute-offsets ( -- )
     data-stack clear-stack  fp-stack clear-stack      data-stack clear-stack  fp-stack clear-stack return-stack clear-stack
     effect-in  effect-in-end  @ ['] stack-in  compute-list      inst-stream clear-stack
     effect-out effect-out-end @ ['] stack-out compute-list ;      effect-in  effect-in-end  @ ['] compute-offset-in  map-items
       effect-out effect-out-end @ ['] compute-offset-out map-items
       inst-stream stack-out @ 0<> abort" # can only be on the input side" ;
   
 : flush-a-tos { stack -- }  : flush-a-tos { stack -- }
     stack stack-out @ 0<> stack stack-in @ 0= and      stack stack-out @ 0<> stack stack-in @ 0= and
Line 538  set-current Line 395  set-current
     endif ;      endif ;
   
 : flush-tos ( -- )  : flush-tos ( -- )
     data-stack flush-a-tos      data-stack   flush-a-tos
     fp-stack   flush-a-tos ;      fp-stack     flush-a-tos
       return-stack flush-a-tos ;
   
 : fill-a-tos { stack -- }  : fill-a-tos { stack -- }
     stack stack-out @ 0= stack stack-in @ 0<> and      stack stack-out @ 0= stack stack-in @ 0<> and
Line 549  set-current Line 407  set-current
     endif ;      endif ;
   
 : fill-tos ( -- )  : fill-tos ( -- )
     fp-stack   fill-a-tos      \ !! inst-stream for prefetching?
     data-stack fill-a-tos ;      fp-stack     fill-a-tos
       data-stack   fill-a-tos
       return-stack fill-a-tos ;
   
 : fetch ( addr -- )  : fetch ( addr -- )
  dup item-type @ type-fetch @ execute ;   dup item-type @ type-fetch @ execute ;
   
 : fetches ( -- )  : fetches ( -- )
  effect-in-end @ effect-in ?do      effect-in effect-in-end @ ['] fetch map-items ;
    i fetch  
  item% %size +loop ;   
   
 : stack-pointer-update { stack -- }  : stack-pointer-update { stack -- }
     \ stack grow downwards      \ stack grow downwards
Line 567  set-current Line 425  set-current
         stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr          stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr
     endif ;      endif ;
   
   : inst-pointer-update ( -- )
       inst-stream stack-in @ ?dup-if
           ." INC_IP(" 0 .r ." );" cr
       endif ;
   
 : stack-pointer-updates ( -- )  : stack-pointer-updates ( -- )
     data-stack stack-pointer-update      inst-pointer-update
     fp-stack   stack-pointer-update ;      data-stack   stack-pointer-update
       fp-stack     stack-pointer-update
       return-stack stack-pointer-update ;
   
 : store ( item -- )  : store ( item -- )
 \ f is true if the item should be stored  \ f is true if the item should be stored
Line 577  set-current Line 442  set-current
  dup item-type @ type-store @ execute ;   dup item-type @ type-store @ execute ;
   
 : stores ( -- )  : stores ( -- )
  effect-out-end @ effect-out ?do      effect-out effect-out-end @ ['] store map-items ;
    i store  
  item% %size +loop ;   : output-c-tail ( -- )
       \ the final part of the generated C code
       ." NEXT_P1;" cr
       stores
       fill-tos
       ." NEXT_P2;" cr ;
   
   : type-c ( c-addr u -- )
       \ like TYPE, but replaces "TAIL;" with tail code
       begin ( c-addr1 u1 )
           2dup s" TAIL;" search
       while ( c-addr1 u1 c-addr3 u3 )
           2dup 2>r drop nip over - type
           output-c-tail
           2r> 5 /string
           \ !! resync #line missing
       repeat
       2drop type ;
   
   : print-type-prefix ( type -- )
       body> >head .name ;
   
   : print-debug-arg { item -- }
       ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
       ." printarg_" item item-type @ print-type-prefix
       ." (" item item-name 2@ type ." );" cr ;
       
   : print-debug-args ( -- )
       ." #ifdef VM_DEBUG" cr
       ." if (vm_debug) {" cr
       effect-in effect-in-end @ ['] print-debug-arg map-items
       ." fputc('\n', vm_out);" cr
       ." }" cr
       ." #endif" cr ;
       
 : output-c ( -- )   : output-c ( -- ) 
  ." I_" c-name 2@ type ." :     /* " forth-name 2@ type ."  ( " stack-string 2@ type ." ) */" cr   ." I_" c-name 2@ type ." :     /* " forth-name 2@ type ."  ( " stack-string 2@ type ." ) */" cr
  ." /* " doc 2@ type ."  */" cr   ." /* " doc 2@ type ."  */" cr
  ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging   ." NAME(" quote forth-name 2@ type quote ." )" cr \ debugging
  ." {" cr   ." {" cr
  ." DEF_CA" cr   ." DEF_CA" cr
  declarations   print-declarations
  compute-offsets \ for everything else  
  ." NEXT_P0;" cr   ." NEXT_P0;" cr
  flush-tos   flush-tos
  fetches   fetches
    print-debug-args
  stack-pointer-updates   stack-pointer-updates
  ." {" cr   ." {" cr
  ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr   ." #line " c-line @ . quote c-filename 2@ type quote cr
  c-code 2@ type   c-code 2@ type-c
  ." }" cr   ." }" cr
  ." NEXT_P1;" cr   output-c-tail
  stores  
  fill-tos  
  ." NEXT_P2;" cr  
  ." }" cr   ." }" cr
  cr   cr
 ;  ;
   
   : disasm-arg { item -- }
       item item-stack @ inst-stream = if
           ."   fputc(' ', vm_out); "
           ." printarg_" item item-type @ print-type-prefix
           ." ((" item item-type @ type-c-name 2@ type ." )"
           ." ip[" item item-offset @ 1+ 0 .r ." ]);" cr
       endif ;
   
   : disasm-args ( -- )
       effect-in effect-in-end @ ['] disasm-arg map-items ;
   
   : output-disasm ( -- )
       \ generate code for disassembling VM instructions
       ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
       ."   fputs(" quote forth-name 2@ type quote ." , vm_out);" cr
       disasm-args
       ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
       ." } else " ;
   
   : gen-arg-parm { item -- }
       item item-stack @ inst-stream = if
           ." , " item item-type @ type-c-name 2@ type space
           item item-name 2@ type
       endif ;
   
   : gen-args-parm ( -- )
       effect-in effect-in-end @ ['] gen-arg-parm map-items ;
   
   : gen-arg-gen { item -- }
       item item-stack @ inst-stream = if
           ."   genarg_" item item-type @ print-type-prefix
           ." (ctp, " item item-name 2@ type ." );" cr
       endif ;
   
   : gen-args-gen ( -- )
       effect-in effect-in-end @ ['] gen-arg-gen map-items ;
   
   : output-gen ( -- )
       \ generate C code for generating VM instructions
       ." void gen_" c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
       ." {" cr
       ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
       gen-args-gen
       ." }" cr ;
   
 : 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_" c-name 2@ type ." ," cr ;    ." &I_" c-name 2@ type ." ," cr ;
   
 : output-forthname ( -- )  : output-forthname ( -- )
   1 function-number +!  
   '" emit forth-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_" c-name 2@ type ." (Cell *SP, Cell **FP)      /* " forth-name 2@ type      ." Cell * I_" c-name 2@ type ." (Cell *SP, Cell **FP)      /* " forth-name 2@ type
     ."  ( " stack-string 2@ type ."  ) */" cr      ."  ( " stack-string 2@ type ."  ) */" cr
     ." /* " doc 2@ type ."  */" cr      ." /* " doc 2@ type ."  */" cr
     ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr      ." NAME(" quote forth-name 2@ type quote ." )" cr
     \ debugging      \ debugging
     ." {" cr      ." {" cr
     declarations      print-declarations
     compute-offsets \ for everything else      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
     fp-stack   stack-used? IF ." Cell *fp=*FP;" cr THEN      fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
       return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
     flush-tos      flush-tos
     fetches      fetches
     stack-pointer-updates      stack-pointer-updates
     fp-stack   stack-used? IF ." *FP=fp;" cr THEN      fp-stack   stack-used? IF ." *FP=fp;" cr THEN
     ." {" cr      ." {" cr
     ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr      ." #line " c-line @ . quote c-filename 2@ type quote cr
     c-code 2@ type      c-code 2@ type
     ." }" cr      ." }" cr
     stores      stores
Line 644  set-current Line 582  set-current
     cr ;      cr ;
   
 : output-label ( -- )    : output-label ( -- )  
     ." (Label)&&I_" c-name 2@ type ." ," cr      ." (Label)&&I_" 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 " forth-name 2@ type cr ;
     -1 primitive-number +! ;  
   
 : output-forth ( -- )    : output-forth ( -- )  
     forth-code @ 0=      forth-code @ 0=
Line 659  set-current Line 595  set-current
     ELSE  ." : " forth-name 2@ type ."   ( "      ELSE  ." : " forth-name 2@ type ."   ( "
         stack-string 2@ type ." )" cr          stack-string 2@ type ." )" cr
         forth-code 2@ type cr          forth-code 2@ type cr
         -1 primitive-number +!  
     THEN ;      THEN ;
   
 : output-tag-file ( -- )  : output-tag-file ( -- )
Line 691  set-current Line 626  set-current
     set-current ;      set-current ;
 [THEN]  [THEN]
   
   
   \ 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! }}
      )) ?? {{  declarations compute-offsets printprim 1 function-number +! }}
      (( 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 ;
   
 : process-file ( addr u xt -- )  : process-file ( addr u xt -- )
     >r      >r
     2dup filename 2!      save-mem 2dup filename 2!
     0 function-number !      0 function-number !
     r/o open-file abort" cannot open file"      r/o open-file abort" cannot open file"
     warnings @ if      warnings @ if

Removed from v.1.49  
changed lines
  Added in v.1.68


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