File:  [gforth] / gforth / prims2x.fs
Revision 1.34: download - view: text, annotated - select for diffs
Sun Nov 22 23:18:10 1998 UTC (20 years, 11 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Added system-specific options for C-part of primitives

    1: \ converts primitives to, e.g., C code 
    2: 
    3: \ Copyright (C) 1995 Free Software Foundation, Inc.
    4: 
    5: \ This file is part of Gforth.
    6: 
    7: \ Gforth is free software; you can redistribute it and/or
    8: \ modify it under the terms of the GNU General Public License
    9: \ as published by the Free Software Foundation; either version 2
   10: \ of the License, or (at your option) any later version.
   11: 
   12: \ This program is distributed in the hope that it will be useful,
   13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15: \ GNU General Public License for more details.
   16: 
   17: \ You should have received a copy of the GNU General Public License
   18: \ along with this program; if not, write to the Free Software
   19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   20: 
   21: 
   22: \ This is not very nice (hard limits, no checking, assumes 1 chars = 1)
   23: 
   24: \ Optimizations:
   25: \ superfluous stores are removed. GCC removes the superfluous loads by itself
   26: \ TOS and FTOS can be kept in register( variable)s.
   27: \ 
   28: \ Problems:
   29: \ The TOS optimization is somewhat hairy. The problems by example:
   30: \ 1) dup ( w -- w w ): w=TOS; sp-=1; sp[1]=w; TOS=w;
   31: \    The store is not superfluous although the earlier opt. would think so
   32: \    Alternatively:    sp[0]=TOS; w=TOS; sp-=1; TOS=w;
   33: \ 2) ( -- .. ): sp[0] = TOS; ... /* This additional store is necessary */
   34: \ 3) ( .. -- ): ... TOS = sp[0]; /* as well as this load */
   35: \ 4) ( -- ): /* but here they are unnecessary */
   36: \ 5) Words that call NEXT themselves have to be done very carefully.
   37: \
   38: \ To do:
   39: \ add the store optimization for doubles
   40: \ regarding problem 1 above: It would be better (for over) to implement
   41: \ 	the alternative
   42: 
   43: warnings off
   44: 
   45: require search.fs
   46: require extend.fs
   47: 
   48: \ require interpretation.fs
   49: \ require debugs.fs
   50: [IFUNDEF] vocabulary    include search.fs [THEN]
   51: [IFUNDEF] environment?  include environ.fs      [THEN]
   52: include gray.fs
   53: 
   54: 100 constant max-effect \ number of things on one side of a stack effect
   55: 255 constant maxchar
   56: maxchar 1+ constant eof-char
   57: #tab constant tab-char
   58: #lf constant nl-char
   59: 
   60: : read-whole-file ( c-addr1 file-id -- c-addr2 )
   61: \ reads the contents of the file file-id puts it into memory at c-addr1
   62: \ c-addr2 is the first address after the file block
   63:   >r dup $7fffffff r> read-file throw + ;
   64: 
   65: variable rawinput \ pointer to next character to be scanned
   66: variable endrawinput \ pointer to the end of the input (the char after the last)
   67: variable cookedinput \ pointer to the next char to be parsed
   68: variable line \ line number of char pointed to by input
   69: 1 line !
   70: 2variable filename \ filename of original input file
   71: 0 0 filename 2!
   72: 2variable f-comment
   73: 0 0 f-comment 2!
   74: variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
   75: skipsynclines on 
   76: 
   77: Variable flush-comment flush-comment off
   78: 
   79: : ?flush-comment
   80:     flush-comment @ 0= ?EXIT
   81:     f-comment 2@ nip
   82:     IF  cr f-comment 2@ 2 /string 1-
   83: 	dup IF
   84: 	    flush-comment @ 1 =
   85: 	    IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP
   86: 	    ELSE  ." has? " type ."  [IF]"  THEN  cr
   87: 	ELSE    flush-comment @ 1 = IF  ." #endif"  ELSE  ." [THEN]"  THEN
   88: 	    cr  THEN
   89: 	0 0 f-comment 2! THEN ;
   90: 
   91: : start ( -- addr )
   92:  cookedinput @ ;
   93: 
   94: : end ( addr -- addr u )
   95:  cookedinput @ over - ;
   96: 
   97: variable output \ xt ( -- ) of output word
   98: 
   99: : printprim ( -- )
  100:  output @ execute ;
  101: 
  102: : field
  103:  <builds-field ( n1 n2 -- n3 )
  104:  does>         ( addr1 -- addr2 )
  105:    @ + ;
  106: 
  107: : const-field
  108:  <builds-field ( n1 n2 -- n3 )
  109:  does>         ( addr -- w )
  110:    @ + @ ;
  111: 
  112: struct
  113:  2 cells field item-name
  114:  cell field item-d-offset
  115:  cell field item-f-offset
  116:  cell field item-type
  117: constant item-descr
  118: 
  119: 2variable forth-name
  120: 2variable wordset
  121: 2variable c-name
  122: 2variable doc
  123: 2variable c-code
  124: 2variable forth-code
  125: 2variable stack-string
  126: create effect-in  max-effect item-descr * allot
  127: create effect-out max-effect item-descr * allot
  128: variable effect-in-end ( pointer )
  129: variable effect-out-end ( pointer )
  130: 2variable effect-in-size
  131: 2variable effect-out-size
  132: variable c-line
  133: 2variable c-filename
  134: variable name-line
  135: 2variable name-filename
  136: 2variable last-name-filename
  137: 
  138: variable primitive-number -10 primitive-number !
  139: Variable function-number 0 function-number !
  140: 
  141: \ for several reasons stack items of a word are stored in a wordlist
  142: \ since neither forget nor marker are implemented yet, we make a new
  143: \ wordlist for every word and store it in the variable items
  144: variable items
  145: 
  146: \ a few more set ops
  147: 
  148: : bit-equivalent ( w1 w2 -- w3 )
  149:  xor invert ;
  150: 
  151: : complement ( set1 -- set2 )
  152:  empty ['] bit-equivalent binary-set-operation ;
  153: 
  154: \ the parser
  155: 
  156: eof-char max-member \ the whole character set + EOF
  157: 
  158: : getinput ( -- n )
  159:  rawinput @ endrawinput @ =
  160:  if
  161:    eof-char
  162:  else
  163:    cookedinput @ c@
  164:  endif ;
  165: 
  166: :noname ( n -- )
  167:  dup bl > if
  168:   emit space
  169:  else
  170:   .
  171:  endif ;
  172: print-token !
  173: 
  174: : testchar? ( set -- f )
  175:  getinput member? ;
  176: ' testchar? test-vector !
  177: 
  178: : checksyncline ( -- )
  179:     \ when input points to a newline, check if the next line is a
  180:     \ sync line.  If it is, perform the appropriate actions.
  181:     rawinput @ >r
  182:     s" #line " r@ over compare 0<> if
  183: 	rdrop 1 line +! EXIT
  184:     endif
  185:     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
  186:     dup c@ bl = if
  187: 	char+ dup c@ [char] " <> abort" sync line syntax"
  188: 	char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
  189: 	char+
  190:     endif
  191:     dup c@ nl-char <> abort" sync line syntax"
  192:     skipsynclines @ if
  193: 	dup char+ rawinput !
  194: 	rawinput @ c@ cookedinput @ c!
  195:     endif
  196:     drop ;
  197: 
  198: : ?nextchar ( f -- )
  199:     ?not? if
  200: 	filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"
  201: 	getinput . cr
  202: 	rawinput @ endrawinput @ over - 100 min type cr
  203: 	abort
  204:     endif
  205:     rawinput @ endrawinput @ <> if
  206: 	rawinput @ c@
  207: 	1 chars rawinput +!
  208: 	1 chars cookedinput +!
  209: 	nl-char = if
  210: 	    checksyncline
  211: 	endif
  212: 	rawinput @ c@ cookedinput @ c!
  213:     endif ;
  214: 
  215: : charclass ( set "name" -- )
  216:  ['] ?nextchar terminal ;
  217: 
  218: : .. ( c1 c2 -- set )
  219:  ( creates a set that includes the characters c, c1<=c<=c2 )
  220:  empty copy-set
  221:  swap 1+ rot do
  222:   i over add-member
  223:  loop ;
  224: 
  225: : ` ( -- terminal ) ( use: ` c )
  226:  ( creates anonymous terminal for the character c )
  227:  char singleton ['] ?nextchar make-terminal ;
  228: 
  229: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
  230: char 0 char 9 ..					charclass digit
  231: bl singleton						charclass blank
  232: tab-char singleton					charclass tab
  233: nl-char singleton eof-char over add-member complement	charclass nonl
  234: nl-char singleton eof-char over add-member char : over add-member complement  charclass nocolonnl
  235: bl 1+ maxchar ..					charclass nowhite
  236: char " singleton eof-char over add-member complement	charclass noquote
  237: nl-char singleton					charclass nl
  238: eof-char singleton					charclass eof
  239: 
  240: 
  241: (( letter (( letter || digit )) **
  242: )) <- c-name ( -- )
  243: 
  244: nowhite ++
  245: <- name ( -- )
  246: 
  247: (( {{ ?flush-comment start }} ` \ nonl ** nl {{ end
  248:       2dup 2 min s" \+" compare 0= IF  f-comment 2!  ELSE  2drop  THEN }}
  249: )) <- comment ( -- )
  250: 
  251: (( {{ effect-in }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-in-end ! }}
  252:    ` - ` - blank **
  253:    {{ effect-out }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-out-end ! }}
  254: )) <- stack-effect ( -- )
  255: 
  256: (( {{ s" " doc 2! s" " forth-code 2! }}
  257:    (( comment || nl )) **
  258:    (( {{ line @ name-line ! filename 2@ name-filename 2! }}
  259:       {{ start }} name {{ end 2dup forth-name 2! c-name 2! }}  tab ++
  260:       {{ start }} stack-effect {{ end stack-string 2! }} tab ++
  261:         {{ start }} name {{ end wordset 2! }} tab **
  262:         (( {{ start }}  c-name {{ end c-name 2! }} )) ??  nl
  263:    ))
  264:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " nl )) ??
  265:    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl )) ** {{ end c-code 2! skipsynclines on }}
  266:    (( ` :  nl
  267:       {{ start }} (( nonl ++  nl )) ++ {{ end forth-code 2! }}
  268:    )) ??
  269:    (( nl || eof ))
  270: )) <- primitive ( -- )
  271: 
  272: (( (( primitive {{ printprim }} )) **  eof ))
  273: parser primitives2something
  274: warnings @ [IF]
  275: .( parser generated ok ) cr
  276: [THEN]
  277: 
  278: : primfilter ( file-id xt -- )
  279: \ fileid is for the input file, xt ( -- ) is for the output word
  280:  output !
  281:  here dup rawinput ! cookedinput !
  282:  here swap read-whole-file
  283:  dup endrawinput !
  284:  here - allot
  285:  align
  286:  checksyncline
  287: \ begin
  288: \     getinput dup eof-char = ?EXIT emit true ?nextchar
  289: \ again ;
  290:  primitives2something ;
  291: 
  292: \ types
  293: 
  294: struct
  295:  2 cells field type-c-name
  296:  cell const-field type-d-size
  297:  cell const-field type-f-size
  298:  cell const-field type-fetch-handler
  299:  cell const-field type-store-handler
  300: constant type-description
  301: 
  302: : data-stack-access ( n1 n2 n3 -- )
  303: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
  304:  drop swap - 1- dup
  305:  if
  306:    ." sp[" 0 .r ." ]"
  307:  else
  308:    drop ." TOS"
  309:  endif ;
  310: 
  311: : fp-stack-access ( n1 n2 n3 -- )
  312: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
  313:  nip swap - 1- dup
  314:  if
  315:    ." fp[" 0 .r ." ]"
  316:  else
  317:    drop ." FTOS"
  318:  endif ;
  319: 
  320: : fetch-single ( item -- )
  321:  >r
  322:  r@ item-name 2@ type
  323:  ."  = (" 
  324:  r@ item-type @ type-c-name 2@ type ." ) "
  325:  r@ item-d-offset @ effect-in-size 2@ data-stack-access ." ;" cr
  326:  rdrop ; 
  327: 
  328: : fetch-double ( item -- )
  329:  >r
  330:  ." FETCH_DCELL("
  331:  r@ item-name 2@ type ." , "
  332:  r@ item-d-offset @ dup    effect-in-size 2@ data-stack-access
  333:  ." , "			1+ effect-in-size 2@ data-stack-access
  334:  ." );" cr
  335:  rdrop ;
  336: 
  337: : fetch-float ( item -- )
  338:  >r
  339:  r@ item-name 2@ type
  340:  ."  = "
  341:  \ ." (" r@ item-type @ type-c-name 2@ type ." ) "
  342:  r@ item-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr
  343:  rdrop ;
  344: 
  345: : d-same-as-in? ( item -- f )
  346: \ f is true iff the offset of item is the same as on input
  347:  >r
  348:  r@ item-name 2@ items @ search-wordlist 0=
  349:  abort" bug"
  350:  execute @
  351:  dup r@ =
  352:  if \ item first appeared in output
  353:    drop false
  354:  else
  355:    item-d-offset @ r@ item-d-offset @ =
  356:  endif
  357:  rdrop ;
  358: 
  359: : is-in-tos? ( item -- f )
  360: \ true if item has the same offset as the input TOS
  361:  item-d-offset @ 1+ effect-in-size 2@ drop = ;
  362: 
  363: : is-out-tos? ( item -- f )
  364: \ true if item has the same offset as the input TOS
  365:  item-d-offset @ 1+ effect-out-size 2@ drop = ;
  366: 
  367: : really-store-single ( item -- )
  368:  >r
  369:  r@ item-d-offset @ effect-out-size 2@ data-stack-access ."  = (Cell)"
  370:  r@ item-name 2@ type ." ;"
  371:  rdrop ;
  372: 
  373: : store-single ( item -- )
  374:  >r
  375:  r@ d-same-as-in?
  376:  if
  377:    r@ is-in-tos? r@ is-out-tos? xor
  378:    if
  379:      ." IF_TOS(" r@ really-store-single ." );" cr
  380:    endif
  381:  else
  382:    r@ really-store-single cr
  383:  endif
  384:  rdrop ;
  385: 
  386: : store-double ( item -- )
  387: \ !! store optimization is not performed, because it is not yet needed
  388:  >r
  389:  ." STORE_DCELL(" r@ item-name 2@ type ." , "
  390:  r@ item-d-offset @ dup    effect-out-size 2@ data-stack-access
  391:  ." , "			1+ effect-out-size 2@ data-stack-access
  392:  ." );" cr
  393:  rdrop ;
  394: 
  395: : f-same-as-in? ( item -- f )
  396: \ f is true iff the offset of item is the same as on input
  397:  >r
  398:  r@ item-name 2@ items @ search-wordlist 0=
  399:  abort" bug"
  400:  execute @
  401:  dup r@ =
  402:  if \ item first appeared in output
  403:    drop false
  404:  else
  405:    item-f-offset @ r@ item-f-offset @ =
  406:  endif
  407:  rdrop ;
  408: 
  409: : is-in-ftos? ( item -- f )
  410: \ true if item has the same offset as the input TOS
  411:  item-f-offset @ 1+ effect-in-size 2@ nip = ;
  412: 
  413: : really-store-float ( item -- )
  414:  >r
  415:  r@ item-f-offset @ effect-out-size 2@ fp-stack-access ."  = "
  416:  r@ item-name 2@ type ." ;"
  417:  rdrop ;
  418: 
  419: : store-float ( item -- )
  420:  >r
  421:  r@ f-same-as-in?
  422:  if
  423:    r@ is-in-ftos?
  424:    if
  425:      ." IF_FTOS(" r@ really-store-float ." );" cr
  426:    endif
  427:  else
  428:    r@ really-store-float cr
  429:  endif
  430:  rdrop ;
  431:  
  432: : single-type ( -- xt1 xt2 n1 n2 )
  433:  ['] fetch-single ['] store-single 1 0 ;
  434: 
  435: : double-type ( -- xt1 xt2 n1 n2 )
  436:  ['] fetch-double ['] store-double 2 0 ;
  437: 
  438: : float-type ( -- xt1 xt2 n1 n2 )
  439:  ['] fetch-float ['] store-float 0 1 ;
  440: 
  441: : s, ( addr u -- )
  442: \ allocate a string
  443:  here swap dup allot move ;
  444: 
  445: : starts-with ( addr u xt1 xt2 n1 n2 "prefix" -- )
  446: \ describes a type
  447: \ addr u specifies the C type name
  448: \ n1 is the size of the type on the data stack
  449: \ n2 is the size of the type on the FP stack
  450: \ stack effect entries of the type start with prefix
  451:  >r >r >r >r
  452:  dup >r here >r s,
  453:  create
  454:  r> r> 2,
  455:  r> r> r> , r> , swap , , ;
  456: 
  457: wordlist constant types
  458: get-current
  459: types set-current
  460: 
  461: s" Bool"	single-type starts-with f
  462: s" Char"	single-type starts-with c
  463: s" Cell"	single-type starts-with n
  464: s" Cell"	single-type starts-with w
  465: s" UCell"	single-type starts-with u
  466: s" DCell"	double-type starts-with d
  467: s" UDCell"	double-type starts-with ud
  468: s" Float"	float-type  starts-with r
  469: s" Cell *"	single-type starts-with a_
  470: s" Char *"	single-type starts-with c_
  471: s" Float *"	single-type starts-with f_
  472: s" DFloat *"	single-type starts-with df_
  473: s" SFloat *"	single-type starts-with sf_
  474: s" Xt"		single-type starts-with xt
  475: s" WID"		single-type starts-with wid
  476: s" struct F83Name *"	single-type starts-with f83name
  477: 
  478: set-current
  479: 
  480: : get-type ( addr1 u1 -- type-descr )
  481: \ get the type of the name in addr1 u1
  482: \ type-descr is a pointer to a type-descriptor
  483:  0 swap ?do
  484:    dup i types search-wordlist
  485:    if \ ok, we have the type ( addr1 xt )
  486:      execute nip
  487:      UNLOOP EXIT
  488:    endif
  489:  -1 s+loop
  490:  \ we did not find a type, abort
  491:  true abort" unknown type prefix" ;
  492: 
  493: : declare ( addr "name" -- )
  494: \ remember that there is a stack item at addr called name
  495:  create , ;
  496: 
  497: : declaration ( item -- )
  498:  dup item-name 2@ items @ search-wordlist
  499:  if \ already declared ( item xt )
  500:    execute @ item-type @ swap item-type !
  501:  else ( addr )
  502:    dup item-name 2@ nextname dup declare ( addr )
  503:    dup >r item-name 2@ 2dup get-type ( addr1 u type-descr )
  504:    dup r> item-type ! ( addr1 u type-descr )
  505:    type-c-name 2@ type space type ." ;" cr
  506:  endif ;
  507: 
  508: : declaration-list ( addr1 addr2 -- )
  509:  swap ?do
  510:   i declaration
  511:  item-descr +loop ;
  512: 
  513: : fetch ( addr -- )
  514:  dup item-type @ type-fetch-handler execute ;
  515: 
  516: : declarations ( -- )
  517:  wordlist dup items ! set-current
  518:  effect-in effect-in-end @ declaration-list
  519:  effect-out effect-out-end @ declaration-list ;
  520: 
  521: \ offset computation
  522: \ the leftmost (i.e. deepest) item has offset 0
  523: \ the rightmost item has the highest offset
  524: 
  525: : compute-offset ( n1 n2 item -- n3 n4 )
  526: \ n1, n3 are data-stack-offsets
  527: \ n2, n4 are the fp-stack-offsets
  528:  >r
  529:  swap dup r@ item-d-offset !
  530:  r@ item-type @ type-d-size +
  531:  swap dup r@ item-f-offset !
  532:  r@ item-type @ type-f-size +
  533:  rdrop ;
  534: 
  535: : compute-list ( addr1 addr2 -- n1 n2 )
  536: \ n1, n2 are the final offsets
  537:  0 0 2swap swap ?do
  538:   i compute-offset
  539:  item-descr +loop ;
  540: 
  541: : compute-offsets ( -- )
  542:  effect-in effect-in-end @ compute-list effect-in-size 2!
  543:  effect-out effect-out-end @ compute-list effect-out-size 2! ;
  544: 
  545: : flush-tos ( -- )
  546:  effect-in-size 2@ effect-out-size 2@
  547:  0<> rot 0= and
  548:  if
  549:    ." IF_FTOS(fp[0] = FTOS);" cr
  550:  endif
  551:  0<> swap 0= and
  552:  if
  553:    ." IF_TOS(sp[0] = TOS);" cr
  554:  endif ;
  555: 
  556: : fill-tos ( -- )
  557:  effect-in-size 2@ effect-out-size 2@
  558:  0= rot 0<> and
  559:  if
  560:    ." IF_FTOS(FTOS = fp[0]);" cr
  561:  endif
  562:  0= swap 0<> and
  563:  if
  564:    ." IF_TOS(TOS = sp[0]);" cr
  565:  endif ;
  566: 
  567: : fetches ( -- )
  568:  effect-in-end @ effect-in ?do
  569:    i fetch
  570:  item-descr +loop ; 
  571: 
  572: : stack-pointer-updates ( -- )
  573: \ we need not check if an update is a noop; gcc does this for us
  574:  effect-in-size 2@
  575:  effect-out-size 2@
  576:  rot swap - ( d-in d-out f-diff )
  577:  rot rot - ( f-diff d-diff )
  578:  ?dup IF  ." sp += " 0 .r ." ;" cr  THEN
  579:  ?dup IF  ." fp += " 0 .r ." ;" cr  THEN ;
  580: 
  581: : store ( item -- )
  582: \ f is true if the item should be stored
  583: \ f is false if the store is probably not necessary
  584:  dup item-type @ type-store-handler execute ;
  585: 
  586: : stores ( -- )
  587:  effect-out-end @ effect-out ?do
  588:    i store
  589:  item-descr +loop ; 
  590: 
  591: : .stack-list ( start end -- )
  592:  swap ?do
  593:    i item-name 2@ type space
  594:  item-descr +loop ; 
  595: 
  596: : output-c ( -- ) 1 flush-comment !
  597:     ?flush-comment
  598:  ." I_" c-name 2@ type ." :	/* " forth-name 2@ type ."  ( " stack-string 2@ type ."  ) */" cr
  599:  ." /* " doc 2@ type ."  */" cr
  600:  ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
  601:  ." {" cr
  602:  ." DEF_CA" cr
  603:  declarations
  604:  compute-offsets \ for everything else
  605:  ." NEXT_P0;" cr
  606:  flush-tos
  607:  fetches
  608:  stack-pointer-updates
  609:  ." {" cr
  610:  ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
  611:  c-code 2@ type
  612:  ." }" cr
  613:  ." NEXT_P1;" cr
  614:  stores
  615:  fill-tos
  616:  ." NEXT_P2;" cr
  617:  ." }" cr
  618:  cr
  619: ;
  620: 
  621: : output-funclabel ( -- )
  622:   1 function-number +!
  623:   ." &I_" c-name 2@ type ." ," cr ;
  624: 
  625: : output-forthname ( -- )
  626:   1 function-number +!
  627:   '" emit forth-name 2@ type '" emit ." ," cr ;
  628: 
  629: : output-c-func ( -- )
  630:     1 function-number +!
  631:     ." void I_" c-name 2@ type ." ()      /* " forth-name 2@ type
  632:     ."  ( " stack-string 2@ type ."  ) */" cr
  633:     ." /* " doc 2@ type ."  */" cr
  634:     ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr
  635:     \ debugging
  636:     ." {" cr
  637:     ." DEF_CA" cr
  638:     declarations
  639:     compute-offsets \ for everything else
  640:     ." NEXT_P0;" cr
  641:     flush-tos
  642:     fetches
  643:     stack-pointer-updates
  644:     ." {" cr
  645:     ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
  646:     c-code 2@ type
  647:     ." }" cr
  648:     ." NEXT_P1;" cr
  649:     stores
  650:     fill-tos
  651:     ." NEXT_P2;" cr
  652:     ." }" cr
  653:     cr ;
  654: 
  655: : output-label ( -- )  1 flush-comment !
  656:     ?flush-comment
  657:     ." [" -2 primitive-number @ - 0 .r ." ] "
  658:     ." (Label)&&I_" c-name 2@ type ." ," cr
  659:     -1 primitive-number +! ;
  660: 
  661: : output-alias ( -- )  flush-comment on
  662:     ?flush-comment
  663:     primitive-number @ . ." alias " forth-name 2@ type cr
  664:     -1 primitive-number +! ;
  665: 
  666: : output-forth ( -- )  flush-comment on
  667:     ?flush-comment
  668:     forth-code @ 0=
  669:     IF    	\ output-alias
  670: 	\ this is bad for ec: an alias is compiled if tho word does not exist!
  671: 	\ JAW
  672:     ELSE  ." : " forth-name 2@ type ."   ( "
  673: 	effect-in effect-in-end @ .stack-list ." -- "
  674: 	effect-out effect-out-end @ .stack-list ." )" cr
  675: 	forth-code 2@ type cr
  676: 	-1 primitive-number +!
  677:     THEN ;
  678: 
  679: : output-tag-file ( -- )
  680:     name-filename 2@ last-name-filename 2@ compare if
  681: 	name-filename 2@ last-name-filename 2!
  682: 	#ff emit cr
  683: 	name-filename 2@ type
  684: 	." ,0" cr
  685:     endif ;
  686: 
  687: : output-tag ( -- )
  688:     output-tag-file
  689:     forth-name 2@ 1+ type
  690:     127 emit
  691:     space forth-name 2@ type space
  692:     1 emit
  693:     name-line @ 0 .r
  694:     ." ,0" cr ;
  695: 
  696: [IFDEF] documentation
  697: : register-doc ( -- )
  698:     get-current documentation set-current
  699:     forth-name 2@ nextname create
  700:     forth-name 2@ 2,
  701:     stack-string 2@ condition-stack-effect 2,
  702:     wordset 2@ 2,
  703:     c-name 2@ condition-pronounciation 2,
  704:     doc 2@ 2,
  705:     set-current ;
  706: [THEN]
  707: 
  708: : process-file ( addr u xt -- )
  709:     >r
  710:     2dup filename 2!
  711:     0 function-number !
  712:     r/o open-file abort" cannot open file"
  713:     warnings @ if
  714: 	." ------------ CUT HERE -------------" cr  endif
  715:     r> primfilter ;
  716: 
  717: : process      ( xt -- )
  718:     bl word count rot
  719:     process-file ;
  720: 

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