File:  [gforth] / gforth / prims2x.fs
Revision 1.25: download - view: text, annotated - select for diffs
Thu Feb 6 21:23:05 1997 UTC (22 years, 8 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Started to merge in changes made for gforth-EC project.

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

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>