1: \ converts primitives to, e.g., C code
2:
3: \ Copyright (C) 1995,1996,1997,1998 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: [IFUNDEF] vocabulary \ we are executed just with kernel image
46: \ load the rest that is needed
47: \ (require fails because this file is needed from a
48: \ different directory with the wordlibraries)
49: include ./search.fs
50: include ./extend.fs
51: [THEN]
52:
53: [IFUNDEF] environment?
54: include ./environ.fs
55: [THEN]
56:
57: include ./gray.fs
58:
59: 100 constant max-effect \ number of things on one side of a stack effect
60: 255 constant maxchar
61: maxchar 1+ constant eof-char
62: #tab constant tab-char
63: #lf constant nl-char
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: : start ( -- addr )
78: cookedinput @ ;
79:
80: : end ( addr -- addr u )
81: cookedinput @ over - ;
82:
83: variable output \ xt ( -- ) of output word
84:
85: : printprim ( -- )
86: output @ execute ;
87:
88: : field
89: <builds-field ( n1 n2 -- n3 )
90: does> ( addr1 -- addr2 )
91: @ + ;
92:
93: : const-field
94: <builds-field ( n1 n2 -- n3 )
95: does> ( addr -- w )
96: @ + @ ;
97:
98: struct
99: 2 cells field item-name
100: cell field item-d-offset
101: cell field item-f-offset
102: cell field item-type
103: constant item-descr
104:
105: 2variable forth-name
106: 2variable wordset
107: 2variable c-name
108: 2variable doc
109: 2variable c-code
110: 2variable forth-code
111: 2variable stack-string
112: create effect-in max-effect item-descr * allot
113: create effect-out max-effect item-descr * allot
114: variable effect-in-end ( pointer )
115: variable effect-out-end ( pointer )
116: 2variable effect-in-size
117: 2variable effect-out-size
118: variable c-line
119: 2variable c-filename
120: variable name-line
121: 2variable name-filename
122: 2variable last-name-filename
123:
124: variable primitive-number -10 primitive-number !
125: Variable function-number 0 function-number !
126:
127: \ for several reasons stack items of a word are stored in a wordlist
128: \ since neither forget nor marker are implemented yet, we make a new
129: \ wordlist for every word and store it in the variable items
130: variable items
131:
132: \ a few more set ops
133:
134: : bit-equivalent ( w1 w2 -- w3 )
135: xor invert ;
136:
137: : complement ( set1 -- set2 )
138: empty ['] bit-equivalent binary-set-operation ;
139:
140: \ the parser
141:
142: eof-char max-member \ the whole character set + EOF
143:
144: : getinput ( -- n )
145: rawinput @ endrawinput @ =
146: if
147: eof-char
148: else
149: cookedinput @ c@
150: endif ;
151:
152: :noname ( n -- )
153: dup bl > if
154: emit space
155: else
156: .
157: endif ;
158: print-token !
159:
160: : testchar? ( set -- f )
161: getinput member? ;
162: ' testchar? test-vector !
163:
164: : checksyncline ( -- )
165: \ when input points to a newline, check if the next line is a
166: \ sync line. If it is, perform the appropriate actions.
167: rawinput @ >r
168: s" #line " r@ over compare 0<> if
169: rdrop 1 line +! EXIT
170: endif
171: 0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
172: dup c@ bl = if
173: char+ dup c@ [char] " <> abort" sync line syntax"
174: char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
175: char+
176: endif
177: dup c@ nl-char <> abort" sync line syntax"
178: skipsynclines @ if
179: dup char+ rawinput !
180: rawinput @ c@ cookedinput @ c!
181: endif
182: drop ;
183:
184: : ?nextchar ( f -- )
185: ?not? if
186: filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"
187: getinput . cr
188: rawinput @ endrawinput @ over - 100 min type cr
189: abort
190: endif
191: rawinput @ endrawinput @ <> if
192: rawinput @ c@
193: 1 chars rawinput +!
194: 1 chars cookedinput +!
195: nl-char = if
196: checksyncline
197: endif
198: rawinput @ c@ cookedinput @ c!
199: endif ;
200:
201: : charclass ( set "name" -- )
202: ['] ?nextchar terminal ;
203:
204: : .. ( c1 c2 -- set )
205: ( creates a set that includes the characters c, c1<=c<=c2 )
206: empty copy-set
207: swap 1+ rot do
208: i over add-member
209: loop ;
210:
211: : ` ( -- terminal ) ( use: ` c )
212: ( creates anonymous terminal for the character c )
213: char singleton ['] ?nextchar make-terminal ;
214:
215: char a char z .. char A char Z .. union char _ singleton union charclass letter
216: char 0 char 9 .. charclass digit
217: bl singleton charclass blank
218: tab-char singleton charclass tab
219: nl-char singleton eof-char over add-member complement charclass nonl
220: nl-char singleton eof-char over add-member char : over add-member complement charclass nocolonnl
221: bl 1+ maxchar .. charclass nowhite
222: char " singleton eof-char over add-member complement charclass noquote
223: nl-char singleton charclass nl
224: eof-char singleton charclass eof
225:
226:
227: (( letter (( letter || digit )) **
228: )) <- c-name ( -- )
229:
230: nowhite ++
231: <- name ( -- )
232:
233: Variable forth-flag
234: Variable c-flag
235:
236: (( (( ` f || ` F )) {{ start }} nonl **
237: {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
238: )) <- forth-comment ( -- )
239:
240: (( (( ` c || ` C )) {{ start }} nonl **
241: {{ end c-flag @ IF type cr ELSE 2drop THEN }}
242: )) <- c-comment ( -- )
243:
244: (( ` - nonl ** {{
245: forth-flag @ IF ." [ELSE]" cr THEN
246: c-flag @ IF ." #else" cr THEN }}
247: )) <- else-comment
248:
249: (( ` + {{ start }} nonl ** {{ end
250: dup
251: IF c-flag @
252: IF ." #ifdef HAS_" bounds ?DO I c@ toupper emit LOOP cr
253: THEN
254: forth-flag @
255: IF ." has? " type ." [IF]" cr THEN
256: ELSE 2drop
257: c-flag @
258: IF ." #endif" cr THEN
259: forth-flag @
260: IF ." [THEN]" cr THEN
261: THEN }}
262: )) <- if-comment
263:
264: (( (( forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
265:
266: (( ` \ comment-body nl )) <- comment ( -- )
267:
268: (( {{ effect-in }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-in-end ! }}
269: ` - ` - blank **
270: {{ effect-out }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-out-end ! }}
271: )) <- stack-effect ( -- )
272:
273: (( {{ s" " doc 2! s" " forth-code 2! }}
274: (( comment || nl )) **
275: (( {{ line @ name-line ! filename 2@ name-filename 2! }}
276: {{ start }} name {{ end 2dup forth-name 2! c-name 2! }} tab ++
277: {{ start }} stack-effect {{ end stack-string 2! }} tab ++
278: {{ start }} name {{ end wordset 2! }} tab **
279: (( {{ start }} c-name {{ end c-name 2! }} )) ?? nl
280: ))
281: (( ` " ` " {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " nl )) ??
282: {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl ** nl )) ** {{ end c-code 2! skipsynclines on }}
283: (( ` : nl
284: {{ start }} (( nonl ++ nl )) ++ {{ end forth-code 2! }}
285: )) ??
286: (( nl || eof ))
287: )) <- primitive ( -- )
288:
289: (( (( primitive {{ printprim }} )) ** eof ))
290: parser primitives2something
291: warnings @ [IF]
292: .( parser generated ok ) cr
293: [THEN]
294:
295: : primfilter ( file-id xt -- )
296: \ fileid is for the input file, xt ( -- ) is for the output word
297: output !
298: here dup rawinput ! cookedinput !
299: here unused rot read-file throw
300: dup here + endrawinput !
301: allot
302: align
303: checksyncline
304: \ begin
305: \ getinput dup eof-char = ?EXIT emit true ?nextchar
306: \ again ;
307: primitives2something ;
308:
309: \ types
310:
311: struct
312: 2 cells field type-c-name
313: cell const-field type-d-size
314: cell const-field type-f-size
315: cell const-field type-fetch-handler
316: cell const-field type-store-handler
317: constant type-description
318:
319: : data-stack-access ( n1 n2 n3 -- )
320: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
321: drop swap - 1- dup
322: if
323: ." sp[" 0 .r ." ]"
324: else
325: drop ." TOS"
326: endif ;
327:
328: : fp-stack-access ( n1 n2 n3 -- )
329: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
330: nip swap - 1- dup
331: if
332: ." fp[" 0 .r ." ]"
333: else
334: drop ." FTOS"
335: endif ;
336:
337: : fetch-single ( item -- )
338: >r
339: r@ item-name 2@ type
340: ." = ("
341: r@ item-type @ type-c-name 2@ type ." ) "
342: r@ item-d-offset @ effect-in-size 2@ data-stack-access ." ;" cr
343: rdrop ;
344:
345: : fetch-double ( item -- )
346: >r
347: ." FETCH_DCELL("
348: r@ item-name 2@ type ." , "
349: r@ item-d-offset @ dup effect-in-size 2@ data-stack-access
350: ." , " 1+ effect-in-size 2@ data-stack-access
351: ." );" cr
352: rdrop ;
353:
354: : fetch-float ( item -- )
355: >r
356: r@ item-name 2@ type
357: ." = "
358: \ ." (" r@ item-type @ type-c-name 2@ type ." ) "
359: r@ item-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr
360: rdrop ;
361:
362: : d-same-as-in? ( item -- f )
363: \ f is true iff the offset of item is the same as on input
364: >r
365: r@ item-name 2@ items @ search-wordlist 0=
366: abort" bug"
367: execute @
368: dup r@ =
369: if \ item first appeared in output
370: drop false
371: else
372: item-d-offset @ r@ item-d-offset @ =
373: endif
374: rdrop ;
375:
376: : is-in-tos? ( item -- f )
377: \ true if item has the same offset as the input TOS
378: item-d-offset @ 1+ effect-in-size 2@ drop = ;
379:
380: : is-out-tos? ( item -- f )
381: \ true if item has the same offset as the input TOS
382: item-d-offset @ 1+ effect-out-size 2@ drop = ;
383:
384: : really-store-single ( item -- )
385: >r
386: r@ item-d-offset @ effect-out-size 2@ data-stack-access ." = (Cell)"
387: r@ item-name 2@ type ." ;"
388: rdrop ;
389:
390: : store-single ( item -- )
391: >r
392: r@ d-same-as-in?
393: if
394: r@ is-in-tos? r@ is-out-tos? xor
395: if
396: ." IF_TOS(" r@ really-store-single ." );" cr
397: endif
398: else
399: r@ really-store-single cr
400: endif
401: rdrop ;
402:
403: : store-double ( item -- )
404: \ !! store optimization is not performed, because it is not yet needed
405: >r
406: ." STORE_DCELL(" r@ item-name 2@ type ." , "
407: r@ item-d-offset @ dup effect-out-size 2@ data-stack-access
408: ." , " 1+ effect-out-size 2@ data-stack-access
409: ." );" cr
410: rdrop ;
411:
412: : f-same-as-in? ( item -- f )
413: \ f is true iff the offset of item is the same as on input
414: >r
415: r@ item-name 2@ items @ search-wordlist 0=
416: abort" bug"
417: execute @
418: dup r@ =
419: if \ item first appeared in output
420: drop false
421: else
422: item-f-offset @ r@ item-f-offset @ =
423: endif
424: rdrop ;
425:
426: : is-in-ftos? ( item -- f )
427: \ true if item has the same offset as the input TOS
428: item-f-offset @ 1+ effect-in-size 2@ nip = ;
429:
430: : really-store-float ( item -- )
431: >r
432: r@ item-f-offset @ effect-out-size 2@ fp-stack-access ." = "
433: r@ item-name 2@ type ." ;"
434: rdrop ;
435:
436: : store-float ( item -- )
437: >r
438: r@ f-same-as-in?
439: if
440: r@ is-in-ftos?
441: if
442: ." IF_FTOS(" r@ really-store-float ." );" cr
443: endif
444: else
445: r@ really-store-float cr
446: endif
447: rdrop ;
448:
449: : single-type ( -- xt1 xt2 n1 n2 )
450: ['] fetch-single ['] store-single 1 0 ;
451:
452: : double-type ( -- xt1 xt2 n1 n2 )
453: ['] fetch-double ['] store-double 2 0 ;
454:
455: : float-type ( -- xt1 xt2 n1 n2 )
456: ['] fetch-float ['] store-float 0 1 ;
457:
458: : s, ( addr u -- )
459: \ allocate a string
460: here swap dup allot move ;
461:
462: : starts-with ( addr u xt1 xt2 n1 n2 "prefix" -- )
463: \ describes a type
464: \ addr u specifies the C type name
465: \ n1 is the size of the type on the data stack
466: \ n2 is the size of the type on the FP stack
467: \ stack effect entries of the type start with prefix
468: >r >r >r >r
469: dup >r here >r s,
470: create
471: r> r> 2,
472: r> r> r> , r> , swap , , ;
473:
474: wordlist constant types
475: get-current
476: types set-current
477:
478: s" Bool" single-type starts-with f
479: s" Char" single-type starts-with c
480: s" Cell" single-type starts-with n
481: s" Cell" single-type starts-with w
482: s" UCell" single-type starts-with u
483: s" DCell" double-type starts-with d
484: s" UDCell" double-type starts-with ud
485: s" Float" float-type starts-with r
486: s" Cell *" single-type starts-with a_
487: s" Char *" single-type starts-with c_
488: s" Float *" single-type starts-with f_
489: s" DFloat *" single-type starts-with df_
490: s" SFloat *" single-type starts-with sf_
491: s" Xt" single-type starts-with xt
492: s" WID" single-type starts-with wid
493: s" struct F83Name *" single-type starts-with f83name
494:
495: set-current
496:
497: : get-type ( addr1 u1 -- type-descr )
498: \ get the type of the name in addr1 u1
499: \ type-descr is a pointer to a type-descriptor
500: 0 swap ?do
501: dup i types search-wordlist
502: if \ ok, we have the type ( addr1 xt )
503: execute nip
504: UNLOOP EXIT
505: endif
506: -1 s+loop
507: \ we did not find a type, abort
508: true abort" unknown type prefix" ;
509:
510: : declare ( addr "name" -- )
511: \ remember that there is a stack item at addr called name
512: create , ;
513:
514: : declaration ( item -- )
515: dup item-name 2@ items @ search-wordlist
516: if \ already declared ( item xt )
517: execute @ item-type @ swap item-type !
518: else ( addr )
519: dup item-name 2@ nextname dup declare ( addr )
520: dup >r item-name 2@ 2dup get-type ( addr1 u type-descr )
521: dup r> item-type ! ( addr1 u type-descr )
522: type-c-name 2@ type space type ." ;" cr
523: endif ;
524:
525: : declaration-list ( addr1 addr2 -- )
526: swap ?do
527: i declaration
528: item-descr +loop ;
529:
530: : fetch ( addr -- )
531: dup item-type @ type-fetch-handler execute ;
532:
533: : declarations ( -- )
534: wordlist dup items ! set-current
535: effect-in effect-in-end @ declaration-list
536: effect-out effect-out-end @ declaration-list ;
537:
538: \ offset computation
539: \ the leftmost (i.e. deepest) item has offset 0
540: \ the rightmost item has the highest offset
541:
542: : compute-offset ( n1 n2 item -- n3 n4 )
543: \ n1, n3 are data-stack-offsets
544: \ n2, n4 are the fp-stack-offsets
545: >r
546: swap dup r@ item-d-offset !
547: r@ item-type @ type-d-size +
548: swap dup r@ item-f-offset !
549: r@ item-type @ type-f-size +
550: rdrop ;
551:
552: : compute-list ( addr1 addr2 -- n1 n2 )
553: \ n1, n2 are the final offsets
554: 0 0 2swap swap ?do
555: i compute-offset
556: item-descr +loop ;
557:
558: : compute-offsets ( -- )
559: effect-in effect-in-end @ compute-list effect-in-size 2!
560: effect-out effect-out-end @ compute-list effect-out-size 2! ;
561:
562: : flush-tos ( -- )
563: effect-in-size 2@ effect-out-size 2@
564: 0<> rot 0= and
565: if
566: ." IF_FTOS(fp[0] = FTOS);" cr
567: endif
568: 0<> swap 0= and
569: if
570: ." IF_TOS(sp[0] = TOS);" cr
571: endif ;
572:
573: : fill-tos ( -- )
574: effect-in-size 2@ effect-out-size 2@
575: 0= rot 0<> and
576: if
577: ." IF_FTOS(FTOS = fp[0]);" cr
578: endif
579: 0= swap 0<> and
580: if
581: ." IF_TOS(TOS = sp[0]);" cr
582: endif ;
583:
584: : fetches ( -- )
585: effect-in-end @ effect-in ?do
586: i fetch
587: item-descr +loop ;
588:
589: : stack-pointer-updates ( -- )
590: \ we need not check if an update is a noop; gcc does this for us
591: effect-in-size 2@
592: effect-out-size 2@
593: rot swap - ( d-in d-out f-diff )
594: rot rot - ( f-diff d-diff )
595: ?dup IF ." sp += " 0 .r ." ;" cr THEN
596: ?dup IF ." fp += " 0 .r ." ;" cr THEN ;
597:
598: : store ( item -- )
599: \ f is true if the item should be stored
600: \ f is false if the store is probably not necessary
601: dup item-type @ type-store-handler execute ;
602:
603: : stores ( -- )
604: effect-out-end @ effect-out ?do
605: i store
606: item-descr +loop ;
607:
608: : .stack-list ( start end -- )
609: swap ?do
610: i item-name 2@ type space
611: item-descr +loop ;
612:
613: : output-c ( -- )
614: ." I_" c-name 2@ type ." : /* " forth-name 2@ type ." ( " stack-string 2@ type ." ) */" cr
615: ." /* " doc 2@ type ." */" cr
616: ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
617: ." {" cr
618: ." DEF_CA" cr
619: declarations
620: compute-offsets \ for everything else
621: ." NEXT_P0;" cr
622: flush-tos
623: fetches
624: stack-pointer-updates
625: ." {" cr
626: ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
627: c-code 2@ type
628: ." }" cr
629: ." NEXT_P1;" cr
630: stores
631: fill-tos
632: ." NEXT_P2;" cr
633: ." }" cr
634: cr
635: ;
636:
637: : output-funclabel ( -- )
638: 1 function-number +!
639: ." &I_" c-name 2@ type ." ," cr ;
640:
641: : output-forthname ( -- )
642: 1 function-number +!
643: '" emit forth-name 2@ type '" emit ." ," cr ;
644:
645: : output-c-func ( -- )
646: 1 function-number +!
647: ." void I_" c-name 2@ type ." () /* " forth-name 2@ type
648: ." ( " stack-string 2@ type ." ) */" cr
649: ." /* " doc 2@ type ." */" cr
650: ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr
651: \ debugging
652: ." {" cr
653: ." DEF_CA" cr
654: declarations
655: compute-offsets \ for everything else
656: ." NEXT_P0;" cr
657: flush-tos
658: fetches
659: stack-pointer-updates
660: ." {" cr
661: ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
662: c-code 2@ type
663: ." }" cr
664: ." NEXT_P1;" cr
665: stores
666: fill-tos
667: ." NEXT_P2;" cr
668: ." }" cr
669: cr ;
670:
671: : output-label ( -- )
672: ." (Label)&&I_" c-name 2@ type ." ," cr
673: -1 primitive-number +! ;
674:
675: : output-alias ( -- )
676: ( primitive-number @ . ." alias " ) ." Primitive " forth-name 2@ type cr
677: -1 primitive-number +! ;
678:
679: : output-forth ( -- )
680: forth-code @ 0=
681: IF \ output-alias
682: \ this is bad for ec: an alias is compiled if tho word does not exist!
683: \ JAW
684: ELSE ." : " forth-name 2@ type ." ( "
685: effect-in effect-in-end @ .stack-list ." -- "
686: effect-out effect-out-end @ .stack-list ." )" cr
687: forth-code 2@ type cr
688: -1 primitive-number +!
689: THEN ;
690:
691: : output-tag-file ( -- )
692: name-filename 2@ last-name-filename 2@ compare if
693: name-filename 2@ last-name-filename 2!
694: #ff emit cr
695: name-filename 2@ type
696: ." ,0" cr
697: endif ;
698:
699: : output-tag ( -- )
700: output-tag-file
701: forth-name 2@ 1+ type
702: 127 emit
703: space forth-name 2@ type space
704: 1 emit
705: name-line @ 0 .r
706: ." ,0" cr ;
707:
708: [IFDEF] documentation
709: : register-doc ( -- )
710: get-current documentation set-current
711: forth-name 2@ nextname create
712: forth-name 2@ 2,
713: stack-string 2@ condition-stack-effect 2,
714: wordset 2@ 2,
715: c-name 2@ condition-pronounciation 2,
716: doc 2@ 2,
717: set-current ;
718: [THEN]
719:
720: : process-file ( addr u xt -- )
721: >r
722: 2dup filename 2!
723: 0 function-number !
724: r/o open-file abort" cannot open file"
725: warnings @ if
726: ." ------------ CUT HERE -------------" cr endif
727: r> primfilter ;
728:
729: : process ( xt -- )
730: bl word count rot
731: process-file ;
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