Annotation of gforth/prims2x.fs, revision 1.16

1.16    ! anton       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: 
1.1       anton      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:
1.8       pazsan     39: \ add the store optimization for doubles
1.1       anton      40: \ regarding problem 1 above: It would be better (for over) to implement
                     41: \      the alternative
                     42: 
1.3       pazsan     43: warnings off
                     44: 
1.11      pazsan     45: [IFUNDEF] vocabulary    include search-order.fs [THEN]
                     46: [IFUNDEF] environment?  include environ.fs      [THEN]
1.1       anton      47: include gray.fs
                     48: 
                     49: 100 constant max-effect \ number of things on one side of a stack effect
                     50: 4096 constant batch-size \ no meaning, just make sure it's >0
                     51: 255 constant maxchar
                     52: maxchar 1+ constant eof-char
                     53: 9 constant tab-char
                     54: 10 constant nl-char
                     55: 
                     56: : read-whole-file ( c-addr1 file-id -- c-addr2 )
                     57: \ reads the contents of the file file-id puts it into memory at c-addr1
                     58: \ c-addr2 is the first address after the file block
                     59:   begin ( c-addr file-id )
                     60:     2dup batch-size swap read-file 
                     61:     if
1.8       pazsan     62:       true abort" I/O error"
1.1       anton      63:     endif
                     64:     ( c-addr file-id actual-size ) rot over + -rot
                     65:     batch-size <>
                     66:   until
                     67:   drop ;
                     68: 
                     69: variable input \ pointer to next character to be parsed
                     70: variable endinput \ pointer to the end of the input (the char after the last)
                     71: 
                     72: : start ( -- addr )
                     73:  input @ ;
                     74: 
                     75: : end ( addr -- addr u )
                     76:  input @ over - ;
                     77: 
                     78: variable output \ xt ( -- ) of output word
                     79: 
                     80: : printprim ( -- )
                     81:  output @ execute ;
                     82: 
                     83: : field
                     84:  <builds-field ( n1 n2 -- n3 )
                     85:  does>         ( addr1 -- addr2 )
                     86:    @ + ;
                     87: 
                     88: : const-field
                     89:  <builds-field ( n1 n2 -- n3 )
                     90:  does>         ( addr -- w )
                     91:    @ + @ ;
                     92: 
                     93: struct
                     94:  2 cells field item-name
                     95:  cell field item-d-offset
                     96:  cell field item-f-offset
                     97:  cell field item-type
                     98: constant item-descr
                     99: 
                    100: 2variable forth-name
                    101: 2variable wordset
                    102: 2variable c-name
                    103: 2variable doc
                    104: 2variable c-code
                    105: 2variable forth-code
                    106: 2variable stack-string
                    107: create effect-in  max-effect item-descr * allot
                    108: create effect-out max-effect item-descr * allot
                    109: variable effect-in-end ( pointer )
                    110: variable effect-out-end ( pointer )
                    111: 2variable effect-in-size
                    112: 2variable effect-out-size
                    113: 
1.14      pazsan    114: variable primitive-number -10 primitive-number !
1.1       anton     115: 
                    116: \ for several reasons stack items of a word are stored in a wordlist
                    117: \ since neither forget nor marker are implemented yet, we make a new
                    118: \ wordlist for every word and store it in the variable items
                    119: variable items
                    120: 
                    121: \ a few more set ops
                    122: 
                    123: : bit-equivalent ( w1 w2 -- w3 )
                    124:  xor invert ;
                    125: 
                    126: : complement ( set1 -- set2 )
                    127:  empty ['] bit-equivalent binary-set-operation ;
                    128: 
                    129: \ the parser
                    130: 
                    131: eof-char max-member \ the whole character set + EOF
                    132: 
                    133: : getinput ( -- n )
                    134:  input @
                    135:  dup endinput @ =
                    136:  if
                    137:    drop eof-char
                    138:  else
                    139:    c@
                    140:  endif ;
                    141: 
                    142: :noname ( n -- )
                    143:  dup bl > if
                    144:   emit space
                    145:  else
                    146:   .
                    147:  endif ;
                    148: print-token !
                    149: 
                    150: : testchar? ( set -- f )
                    151:  getinput member? ;
                    152: ' testchar? test-vector !
                    153: 
                    154: : ?nextchar ( f -- )
                    155:  ?not? if
                    156:    ." syntax error" cr
                    157:    getinput . cr
                    158:    input @ endinput @ over - 100 min type cr
                    159:    abort
                    160:  endif
                    161:  input @ endinput @ <> if
                    162:    1 input +!
                    163:  endif ;
                    164: 
                    165: : charclass ( set "name" -- )
                    166:  ['] ?nextchar terminal ;
                    167: 
                    168: : .. ( c1 c2 -- set )
                    169:  ( creates a set that includes the characters c, c1<=c<=c2 )
                    170:  empty copy-set
                    171:  swap 1+ rot do
                    172:   i over add-member
                    173:  loop ;
                    174: 
                    175: : ` ( -- terminal ) ( use: ` c )
                    176:  ( creates anonymous terminal for the character c )
                    177:  [compile] ascii singleton ['] ?nextchar make-terminal ;
                    178: 
                    179: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
                    180: char 0 char 9 ..                                       charclass digit
                    181: bl singleton                                           charclass blank
                    182: tab-char singleton                                     charclass tab
                    183: nl-char singleton eof-char over add-member complement  charclass nonl
                    184: nl-char singleton eof-char over add-member char : over add-member complement  charclass nocolonnl
                    185: bl 1+ maxchar ..                                       charclass nowhite
                    186: char " singleton eof-char over add-member complement   charclass noquote
                    187: nl-char singleton                                      charclass nl
                    188: eof-char singleton                                     charclass eof
                    189: 
                    190: 
                    191: (( letter (( letter || digit )) **
                    192: )) <- c-name ( -- )
                    193: 
                    194: nowhite ++
                    195: <- name ( -- )
                    196: 
                    197: (( ` \ nonl ** nl
                    198: )) <- comment ( -- )
                    199: 
                    200: (( {{ effect-in }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-in-end ! }}
                    201:    ` - ` - blank **
                    202:    {{ effect-out }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-out-end ! }}
                    203: )) <- stack-effect ( -- )
                    204: 
                    205: (( {{ s" " doc 2! s" " forth-code 2! }}
                    206:    (( comment || nl )) **
                    207:    (( {{ start }} name {{ end 2dup forth-name 2! c-name 2! }}  tab ++
                    208:       {{ start }} stack-effect {{ end stack-string 2! }} tab ++
                    209:         {{ start }} name {{ end wordset 2! }} tab **
                    210:         (( {{ start }}  c-name {{ end c-name 2! }} )) ??  nl
                    211:    ))
                    212:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " nl )) ??
                    213:    {{ start }} (( nocolonnl nonl **  nl )) ** {{ end c-code 2! }}
                    214:    (( ` :  nl
                    215:       {{ start }} (( nonl ++  nl )) ++ {{ end forth-code 2! }}
                    216:    )) ??
                    217:    (( nl || eof ))
                    218: )) <- primitive ( -- )
                    219: 
                    220: (( (( primitive {{ printprim }} )) **  eof ))
                    221: parser primitives2something
1.3       pazsan    222: warnings @ [IF]
1.1       anton     223: .( parser generated ok ) cr
1.3       pazsan    224: [THEN]
1.1       anton     225: 
                    226: : primfilter ( file-id xt -- )
                    227: \ fileid is for the input file, xt ( -- ) is for the output word
                    228:  output !
                    229:  here input !
                    230:  here swap read-whole-file
                    231:  dup endinput !
                    232:  here - allot
1.2       pazsan    233:  align
1.1       anton     234:  primitives2something ;
                    235: 
                    236: \ types
                    237: 
                    238: struct
                    239:  2 cells field type-c-name
                    240:  cell const-field type-d-size
                    241:  cell const-field type-f-size
                    242:  cell const-field type-fetch-handler
                    243:  cell const-field type-store-handler
                    244: constant type-description
                    245: 
                    246: : data-stack-access ( n1 n2 n3 -- )
                    247: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
                    248:  drop swap - 1- dup
                    249:  if
1.2       pazsan    250:    ." sp[" 0 .r ." ]"
1.1       anton     251:  else
                    252:    drop ." TOS"
                    253:  endif ;
                    254: 
                    255: : fp-stack-access ( n1 n2 n3 -- )
                    256: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
                    257:  nip swap - 1- dup
                    258:  if
1.2       pazsan    259:    ." fp[" 0 .r ." ]"
1.1       anton     260:  else
                    261:    drop ." FTOS"
                    262:  endif ;
                    263: 
                    264: : fetch-single ( item -- )
                    265:  >r
1.8       pazsan    266:  r@ item-name 2@ type
                    267:  ."  = (" 
1.1       anton     268:  r@ item-type @ type-c-name 2@ type ." ) "
                    269:  r@ item-d-offset @ effect-in-size 2@ data-stack-access ." ;" cr
                    270:  rdrop ; 
                    271: 
                    272: : fetch-double ( item -- )
                    273:  >r
1.8       pazsan    274:  r@ item-name 2@ type 
                    275:  ." = ({Double_Store _d; _d.cells.low = "
1.1       anton     276:  r@ item-d-offset @ dup    effect-in-size 2@ data-stack-access
1.8       pazsan    277:  ." ; _d.cells.high = " 1+ effect-in-size 2@ data-stack-access
                    278:  ." ; _d.dcell;});" cr
1.1       anton     279:  rdrop ;
                    280: 
                    281: : fetch-float ( item -- )
                    282:  >r
1.8       pazsan    283:  r@ item-name 2@ type
                    284:  ."  = "
1.1       anton     285:  \ ." (" r@ item-type @ type-c-name 2@ type ." ) "
                    286:  r@ item-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr
                    287:  rdrop ;
                    288: 
                    289: : d-same-as-in? ( item -- f )
                    290: \ f is true iff the offset of item is the same as on input
                    291:  >r
                    292:  r@ item-name 2@ items @ search-wordlist 0=
1.8       pazsan    293:  abort" bug"
1.1       anton     294:  execute @
                    295:  dup r@ =
                    296:  if \ item first appeared in output
                    297:    drop false
                    298:  else
                    299:    item-d-offset @ r@ item-d-offset @ =
                    300:  endif
                    301:  rdrop ;
                    302: 
                    303: : is-in-tos? ( item -- f )
                    304: \ true if item has the same offset as the input TOS
                    305:  item-d-offset @ 1+ effect-in-size 2@ drop = ;
                    306: 
                    307: : really-store-single ( item -- )
                    308:  >r
                    309:  r@ item-d-offset @ effect-out-size 2@ data-stack-access ."  = (Cell)"
                    310:  r@ item-name 2@ type ." ;"
                    311:  rdrop ;
                    312: 
                    313: : store-single ( item -- )
                    314:  >r
                    315:  r@ d-same-as-in?
                    316:  if
                    317:    r@ is-in-tos?
                    318:    if
                    319:      ." IF_TOS(" r@ really-store-single ." );" cr
                    320:    endif
                    321:  else
                    322:    r@ really-store-single cr
                    323:  endif
                    324:  rdrop ;
                    325: 
                    326: : store-double ( item -- )
                    327: \ !! store optimization is not performed, because it is not yet needed
                    328:  >r
                    329:  ." {Double_Store _d; _d.dcell = " r@ item-name 2@ type ." ; "
                    330:  r@ item-d-offset @ dup    effect-out-size 2@ data-stack-access 
1.2       pazsan    331:  ."  = _d.cells.low; " 1+ effect-out-size 2@ data-stack-access
                    332:  ." = _d.cells.high;}" cr
1.1       anton     333:  rdrop ;
                    334: 
                    335: : f-same-as-in? ( item -- f )
                    336: \ f is true iff the offset of item is the same as on input
                    337:  >r
                    338:  r@ item-name 2@ items @ search-wordlist 0=
1.8       pazsan    339:  abort" bug"
1.1       anton     340:  execute @
                    341:  dup r@ =
                    342:  if \ item first appeared in output
                    343:    drop false
                    344:  else
                    345:    item-f-offset @ r@ item-f-offset @ =
                    346:  endif
                    347:  rdrop ;
                    348: 
                    349: : is-in-ftos? ( item -- f )
                    350: \ true if item has the same offset as the input TOS
                    351:  item-f-offset @ 1+ effect-in-size 2@ nip = ;
                    352: 
                    353: : really-store-float ( item -- )
                    354:  >r
                    355:  r@ item-f-offset @ effect-out-size 2@ fp-stack-access ."  = "
                    356:  r@ item-name 2@ type ." ;"
                    357:  rdrop ;
                    358: 
                    359: : store-float ( item -- )
                    360:  >r
                    361:  r@ f-same-as-in?
                    362:  if
                    363:    r@ is-in-ftos?
                    364:    if
                    365:      ." IF_FTOS(" r@ really-store-float ." );" cr
                    366:    endif
                    367:  else
                    368:    r@ really-store-float cr
                    369:  endif
                    370:  rdrop ;
                    371:  
1.10      anton     372: : single-type ( -- xt1 xt2 n1 n2 )
1.1       anton     373:  ['] fetch-single ['] store-single 1 0 ;
                    374: 
1.10      anton     375: : double-type ( -- xt1 xt2 n1 n2 )
1.1       anton     376:  ['] fetch-double ['] store-double 2 0 ;
                    377: 
1.10      anton     378: : float-type ( -- xt1 xt2 n1 n2 )
1.1       anton     379:  ['] fetch-float ['] store-float 0 1 ;
                    380: 
                    381: : s, ( addr u -- )
                    382: \ allocate a string
                    383:  here swap dup allot move ;
                    384: 
                    385: : starts-with ( addr u xt1 xt2 n1 n2 "prefix" -- )
                    386: \ describes a type
                    387: \ addr u specifies the C type name
                    388: \ n1 is the size of the type on the data stack
                    389: \ n2 is the size of the type on the FP stack
                    390: \ stack effect entries of the type start with prefix
                    391:  >r >r >r >r
                    392:  dup >r here >r s,
                    393:  create
                    394:  r> r> 2,
                    395:  r> r> r> , r> , swap , , ;
                    396: 
                    397: wordlist constant types
                    398: get-current
                    399: types set-current
                    400: 
                    401: s" Bool"       single-type starts-with f
                    402: s" Char"       single-type starts-with c
                    403: s" Cell"       single-type starts-with n
                    404: s" Cell"       single-type starts-with w
                    405: s" UCell"      single-type starts-with u
                    406: s" DCell"      double-type starts-with d
                    407: s" UDCell"     double-type starts-with ud
                    408: s" Float"      float-type  starts-with r
                    409: s" Cell *"     single-type starts-with a_
                    410: s" Char *"     single-type starts-with c_
                    411: s" Float *"    single-type starts-with f_
                    412: s" DFloat *"   single-type starts-with df_
                    413: s" SFloat *"   single-type starts-with sf_
                    414: s" Xt"         single-type starts-with xt
                    415: s" WID"                single-type starts-with wid
                    416: s" F83Name *"  single-type starts-with f83name
                    417: 
                    418: set-current
                    419: 
                    420: : get-type ( addr1 u1 -- type-descr )
                    421: \ get the type of the name in addr1 u1
                    422: \ type-descr is a pointer to a type-descriptor
                    423:  0 swap ?do
                    424:    dup i types search-wordlist
                    425:    if \ ok, we have the type ( addr1 xt )
                    426:      execute nip
                    427:      UNLOOP EXIT
                    428:    endif
1.9       anton     429:  -1 s+loop
1.1       anton     430:  \ we did not find a type, abort
1.8       pazsan    431:  true abort" unknown type prefix" ;
1.1       anton     432: 
                    433: : declare ( addr "name" -- )
                    434: \ remember that there is a stack item at addr called name
                    435:  create , ;
                    436: 
                    437: : declaration ( item -- )
                    438:  dup item-name 2@ items @ search-wordlist
                    439:  if \ already declared ( item xt )
                    440:    execute @ item-type @ swap item-type !
                    441:  else ( addr )
                    442:    dup item-name 2@ nextname dup declare ( addr )
                    443:    dup >r item-name 2@ 2dup get-type ( addr1 u type-descr )
                    444:    dup r> item-type ! ( addr1 u type-descr )
                    445:    type-c-name 2@ type space type ." ;" cr
                    446:  endif ;
                    447: 
                    448: : declaration-list ( addr1 addr2 -- )
                    449:  swap ?do
                    450:   i declaration
                    451:  item-descr +loop ;
                    452: 
1.8       pazsan    453: : fetch ( addr -- )
                    454:  dup item-type @ type-fetch-handler execute ;
                    455: 
1.1       anton     456: : declarations ( -- )
                    457:  wordlist dup items ! set-current
                    458:  effect-in effect-in-end @ declaration-list
                    459:  effect-out effect-out-end @ declaration-list ;
                    460: 
                    461: \ offset computation
                    462: \ the leftmost (i.e. deepest) item has offset 0
                    463: \ the rightmost item has the highest offset
                    464: 
                    465: : compute-offset ( n1 n2 item -- n3 n4 )
                    466: \ n1, n3 are data-stack-offsets
                    467: \ n2, n4 are the fp-stack-offsets
                    468:  >r
                    469:  swap dup r@ item-d-offset !
                    470:  r@ item-type @ type-d-size +
                    471:  swap dup r@ item-f-offset !
                    472:  r@ item-type @ type-f-size +
                    473:  rdrop ;
                    474: 
                    475: : compute-list ( addr1 addr2 -- n1 n2 )
                    476: \ n1, n2 are the final offsets
                    477:  0 0 2swap swap ?do
                    478:   i compute-offset
                    479:  item-descr +loop ;
                    480: 
                    481: : compute-offsets ( -- )
                    482:  effect-in effect-in-end @ compute-list effect-in-size 2!
                    483:  effect-out effect-out-end @ compute-list effect-out-size 2! ;
                    484: 
                    485: : flush-tos ( -- )
                    486:  effect-in-size 2@ effect-out-size 2@
                    487:  0<> rot 0= and
                    488:  if
1.13      anton     489:    ." IF_FTOS(fp[0] = FTOS);" cr
                    490:  endif
1.1       anton     491:  0<> swap 0= and
                    492:  if
1.13      anton     493:    ." IF_TOS(sp[0] = TOS);" cr
                    494:  endif ;
1.1       anton     495: 
                    496: : fill-tos ( -- )
                    497:  effect-in-size 2@ effect-out-size 2@
                    498:  0= rot 0<> and
                    499:  if
                    500:    ." IF_FTOS(FTOS = fp[0]);" cr
                    501:  endif
                    502:  0= swap 0<> and
                    503:  if
                    504:    ." IF_TOS(TOS = sp[0]);" cr
                    505:  endif ;
                    506: 
                    507: : fetches ( -- )
                    508:  effect-in-end @ effect-in ?do
                    509:    i fetch
                    510:  item-descr +loop ; 
                    511: 
                    512: : stack-pointer-updates ( -- )
1.8       pazsan    513: \ we need not check if an update is a noop; gcc does this for us
1.1       anton     514:  effect-in-size 2@
                    515:  effect-out-size 2@
                    516:  rot swap - ( d-in d-out f-diff )
                    517:  rot rot - ( f-diff d-diff )
1.2       pazsan    518:  ?dup IF  ." sp += " 0 .r ." ;" cr  THEN
                    519:  ?dup IF  ." fp += " 0 .r ." ;" cr  THEN ;
1.1       anton     520: 
                    521: : store ( item -- )
                    522: \ f is true if the item should be stored
                    523: \ f is false if the store is probably not necessary
                    524:  dup item-type @ type-store-handler execute ;
                    525: 
                    526: : stores ( -- )
                    527:  effect-out-end @ effect-out ?do
                    528:    i store
                    529:  item-descr +loop ; 
                    530: 
1.8       pazsan    531: : .stack-list ( start end -- )
                    532:  swap ?do
                    533:    i item-name 2@ type space
                    534:  item-descr +loop ; 
                    535: 
1.1       anton     536: : output-c ( -- )
1.2       pazsan    537:  ." I_" c-name 2@ type ." :    /* " forth-name 2@ type ."  ( " stack-string 2@ type ."  ) */" cr
1.1       anton     538:  ." /* " doc 2@ type ."  */" cr
1.13      anton     539:  ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
1.1       anton     540:  ." {" cr
                    541:  ." DEF_CA" cr
                    542:  declarations
                    543:  compute-offsets \ for everything else
1.13      anton     544:  ." NEXT_P0;" cr
                    545:  flush-tos
1.1       anton     546:  fetches
1.13      anton     547:  stack-pointer-updates
1.1       anton     548:  ." {" cr
                    549:  c-code 2@ type
                    550:  ." }" cr
                    551:  ." NEXT_P1;" cr
                    552:  stores
                    553:  fill-tos
1.9       anton     554:  ." NEXT_P2;" cr
1.1       anton     555:  ." }" cr
                    556:  cr
                    557: ;
                    558: 
                    559: : output-label ( -- )
                    560:  ." &&I_" c-name 2@ type ." ," cr ;
                    561: 
                    562: : output-alias ( -- )
                    563:  primitive-number @ . ." alias " forth-name 2@ type cr
                    564:  -1 primitive-number +! ;
                    565: 
1.8       pazsan    566: : output-forth ( -- )
                    567:  forth-code @ 0=
                    568:  IF    output-alias
                    569:  ELSE  ." : " forth-name 2@ type ."   ( "
                    570:        effect-in effect-in-end @ .stack-list ." -- "
                    571:        effect-out effect-out-end @ .stack-list ." )" cr
                    572:        forth-code 2@ type cr
                    573:        -1 primitive-number +!
1.10      anton     574:  THEN ;
                    575: 
                    576: [IFDEF] documentation
                    577: : register-doc ( -- )
                    578:     get-current documentation set-current
                    579:     forth-name 2@ nextname create
                    580:     forth-name 2@ 2,
1.15      anton     581:     stack-string 2@ condition-stack-effect 2,
1.10      anton     582:     wordset 2@ 2,
1.15      anton     583:     c-name 2@ condition-pronounciation 2,
1.10      anton     584:     doc 2@ 2,
                    585:     set-current ;
                    586: [THEN]
1.8       pazsan    587: 
1.1       anton     588: : process-file ( addr u xt -- )
1.8       pazsan    589:  >r r/o open-file abort" cannot open file"
1.3       pazsan    590:  warnings @ if
                    591:  ." ------------ CUT HERE -------------" cr  endif
1.5       pazsan    592:  r> primfilter ;
                    593: 

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