Annotation of gforth/kernel/comp.fs, revision 1.37
1.1 pazsan 1: \ compiler definitions 14sep97jaw
2:
1.28 anton 3: \ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
1.6 anton 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
1.29 anton 19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.6 anton 20:
1.1 pazsan 21: \ \ Revisions-Log
22:
23: \ put in seperate file 14sep97jaw
24:
25: \ \ here allot , c, A, 17dec92py
26:
1.14 jwilke 27: [IFUNDEF] allot
28: [IFUNDEF] forthstart
29: : allot ( n -- ) \ core
30: dup unused u> -8 and throw
31: dp +! ;
32: [THEN]
33: [THEN]
34:
35: \ we default to this version if we have nothing else 05May99jaw
36: [IFUNDEF] allot
1.1 pazsan 37: : allot ( n -- ) \ core
1.23 anton 38: \G Reserve @i{n} address units of data space without
39: \G initialization. @i{n} is a signed number, passing a negative
40: \G @i{n} releases memory. In ANS Forth you can only deallocate
41: \G memory from the current contiguous region in this way. In
42: \G Gforth you can deallocate anything in this way but named words.
43: \G The system does not check this restriction.
1.12 anton 44: here +
45: dup 1- usable-dictionary-end forthstart within -8 and throw
46: dp ! ;
1.14 jwilke 47: [THEN]
1.1 pazsan 48:
1.22 crook 49: : c, ( c -- ) \ core c-comma
1.15 crook 50: \G Reserve data space for one char and store @i{c} in the space.
1.1 pazsan 51: here 1 chars allot c! ;
52:
1.22 crook 53: : , ( w -- ) \ core comma
1.15 crook 54: \G Reserve data space for one cell and store @i{w} in the space.
1.1 pazsan 55: here cell allot ! ;
56:
57: : 2, ( w1 w2 -- ) \ gforth
1.15 crook 58: \G Reserve data space for two cells and store the double @i{w1
1.24 anton 59: \G w2} there, @i{w2} first (lower address).
1.1 pazsan 60: here 2 cells allot 2! ;
61:
62: \ : aligned ( addr -- addr' ) \ core
63: \ [ cell 1- ] Literal + [ -1 cells ] Literal and ;
64:
65: : align ( -- ) \ core
1.15 crook 66: \G If the data-space pointer is not aligned, reserve enough space to align it.
1.1 pazsan 67: here dup aligned swap ?DO bl c, LOOP ;
68:
1.22 crook 69: \ : faligned ( addr -- f-addr ) \ float f-aligned
1.1 pazsan 70: \ [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
71:
1.22 crook 72: : falign ( -- ) \ float f-align
1.15 crook 73: \G If the data-space pointer is not float-aligned, reserve
74: \G enough space to align it.
1.1 pazsan 75: here dup faligned swap
76: ?DO
77: bl c,
78: LOOP ;
79:
1.9 anton 80: : maxalign ( -- ) \ gforth
1.23 anton 81: \G Align data-space pointer for all alignment requirements.
1.1 pazsan 82: here dup maxaligned swap
83: ?DO
84: bl c,
85: LOOP ;
86:
87: \ the code field is aligned if its body is maxaligned
88: ' maxalign Alias cfalign ( -- ) \ gforth
1.24 anton 89: \G Align data-space pointer for code field requirements (i.e., such
90: \G that the corresponding body is maxaligned).
1.1 pazsan 91:
92: ' , alias A, ( addr -- ) \ gforth
93:
94: ' NOOP ALIAS const
95:
96: \ \ Header 23feb93py
97:
98: \ input-stream, nextname and noname are quite ugly (passing
99: \ information through global variables), but they are useful for dealing
100: \ with existing/independent defining words
101:
102: defer (header)
103: defer header ( -- ) \ gforth
104: ' (header) IS header
105:
106: : string, ( c-addr u -- ) \ gforth
107: \G puts down string as cstring
108: dup c, here swap chars dup allot move ;
109:
1.30 anton 110: : longstring, ( c-addr u -- ) \ gforth
111: \G puts down string as cstring
112: dup , here swap chars dup allot move ;
113:
1.1 pazsan 114: : header, ( c-addr u -- ) \ gforth
115: name-too-long?
116: align here last !
117: current @ 1 or A, \ link field; before revealing, it contains the
118: \ tagged reveal-into wordlist
1.30 anton 119: longstring, cfalign
1.1 pazsan 120: alias-mask lastflags cset ;
121:
122: : input-stream-header ( "name" -- )
123: name name-too-short? header, ;
124:
125: : input-stream ( -- ) \ general
126: \G switches back to getting the name from the input stream ;
127: ['] input-stream-header IS (header) ;
128:
129: ' input-stream-header IS (header)
130:
1.32 anton 131: 2variable nextname-string
1.1 pazsan 132:
1.33 pazsan 133: has? OS [IF]
1.1 pazsan 134: : nextname-header ( -- )
1.32 anton 135: nextname-string 2@ header,
136: nextname-string free-mem-var
1.1 pazsan 137: input-stream ;
1.33 pazsan 138: [THEN]
1.1 pazsan 139:
140: \ the next name is given in the string
141:
1.33 pazsan 142: has? OS [IF]
1.1 pazsan 143: : nextname ( c-addr u -- ) \ gforth
1.19 anton 144: \g The next defined word will have the name @var{c-addr u}; the
145: \g defining word will leave the input stream alone.
1.1 pazsan 146: name-too-long?
1.32 anton 147: nextname-string free-mem-var
148: save-mem nextname-string 2!
1.1 pazsan 149: ['] nextname-header IS (header) ;
1.33 pazsan 150: [THEN]
1.1 pazsan 151:
152: : noname-header ( -- )
153: 0 last ! cfalign
154: input-stream ;
155:
156: : noname ( -- ) \ gforth
1.19 anton 157: \g The next defined word will be anonymous. The defining word will
158: \g leave the input stream alone. The xt of the defined word will
159: \g be given by @code{lastxt}.
1.1 pazsan 160: ['] noname-header IS (header) ;
161:
162: : lastxt ( -- xt ) \ gforth
1.15 crook 163: \G @i{xt} is the execution token of the last word defined.
1.13 crook 164: \ The main purpose of this word is to get the xt of words defined using noname
1.1 pazsan 165: lastcfa @ ;
166:
167: \ \ literals 17dec92py
168:
169: : Literal ( compilation n -- ; run-time -- n ) \ core
1.27 anton 170: \G Compilation semantics: compile the run-time semantics.@*
171: \G Run-time Semantics: push @i{n}.@*
172: \G Interpretation semantics: undefined.
1.14 jwilke 173: [ [IFDEF] lit, ]
174: lit,
175: [ [ELSE] ]
1.27 anton 176: postpone lit ,
1.14 jwilke 177: [ [THEN] ] ; immediate restrict
1.1 pazsan 178:
179: : ALiteral ( compilation addr -- ; run-time -- addr ) \ gforth
1.14 jwilke 180: [ [IFDEF] alit, ]
181: alit,
182: [ [ELSE] ]
183: postpone lit A,
184: [ [THEN] ] ; immediate restrict
1.1 pazsan 185:
1.8 crook 186: : char ( '<spaces>ccc' -- c ) \ core
1.15 crook 187: \G Skip leading spaces. Parse the string @i{ccc} and return @i{c}, the
188: \G display code representing the first character of @i{ccc}.
1.1 pazsan 189: bl word char+ c@ ;
190:
1.8 crook 191: : [char] ( compilation '<spaces>ccc' -- ; run-time -- c ) \ core bracket-char
1.10 crook 192: \G Compilation: skip leading spaces. Parse the string
1.15 crook 193: \G @i{ccc}. Run-time: return @i{c}, the display code
194: \G representing the first character of @i{ccc}. Interpretation
1.10 crook 195: \G semantics for this word are undefined.
1.1 pazsan 196: char postpone Literal ; immediate restrict
197:
198: \ \ threading 17mar93py
199:
200: : cfa, ( code-address -- ) \ gforth cfa-comma
201: here
202: dup lastcfa !
203: 0 A, 0 , code-address! ;
204:
1.14 jwilke 205: [IFUNDEF] compile,
1.34 anton 206: defer compile, ( xt -- ) \ core-ext compile-comma
207: \G Compile the word represented by the execution token @i{xt}
208: \G into the current definition.
209:
210: ' , is compile,
1.14 jwilke 211: [THEN]
1.1 pazsan 212:
1.36 pazsan 213: has? peephole [IF]
1.34 anton 214: : peephole-compile, ( xt -- )
215: last-compiled @ ?dup if
216: @ over peeptable peephole-opt ?dup if
217: last-compiled @ ! drop EXIT
218: then
219: then
220: here last-compiled !
221: , ;
222:
1.35 anton 223: : compile-to-prims, ( xt -- )
224: \G compile xt to use primitives (and their peephole optimization)
225: \G instead of ","-ing the xt.
226: \ !! all POSTPONEs here postpone primitives; this can be optimized
227: dup >does-code ?dup if
228: swap >body POSTPONE literal POSTPONE call , EXIT
229: then
230: dup >code-address CASE
231: docon: OF >body POSTPONE literal POSTPONE @ EXIT ENDOF
232: \ docon is also used by VALUEs, so don't @ at compile time
233: docol: OF >body POSTPONE call , EXIT ENDOF
234: dovar: OF >body POSTPONE literal EXIT ENDOF
235: douser: OF >body @ POSTPONE useraddr , EXIT ENDOF
236: dodefer: OF >body POSTPONE literal POSTPONE @ POSTPONE EXECUTE EXIT
237: ENDOF
238: dofield: OF >body @ POSTPONE literal POSTPONE + EXIT ENDOF
239: ENDCASE
240: peephole-compile, ;
241:
242: ' compile-to-prims, IS compile,
1.36 pazsan 243: [ELSE]
244: ' , is compile,
245: [THEN]
1.34 anton 246:
1.1 pazsan 247: : !does ( addr -- ) \ gforth store-does
248: lastxt does-code! ;
249:
250: : (does>) ( R: addr -- )
251: r> cfaligned /does-handler + !does ;
252:
253: : dodoes, ( -- )
254: cfalign here /does-handler allot does-handler! ;
255:
256: : (compile) ( -- ) \ gforth
257: r> dup cell+ >r @ compile, ;
258:
259: \ \ ticks
260:
261: : name>comp ( nt -- w xt ) \ gforth
1.15 crook 262: \G @i{w xt} is the compilation token for the word @i{nt}.
1.1 pazsan 263: (name>comp)
264: 1 = if
265: ['] execute
266: else
267: ['] compile,
268: then ;
269:
270: : [(')] ( compilation "name" -- ; run-time -- nt ) \ gforth bracket-paren-tick
271: (') postpone ALiteral ; immediate restrict
272:
273: : ['] ( compilation. "name" -- ; run-time. -- xt ) \ core bracket-tick
1.15 crook 274: \g @i{xt} represents @i{name}'s interpretation
275: \g semantics. Perform @code{-14 throw} if the word has no
1.1 pazsan 276: \g interpretation semantics.
277: ' postpone ALiteral ; immediate restrict
278:
1.5 anton 279: : COMP' ( "name" -- w xt ) \ gforth comp-tick
1.15 crook 280: \g Compilation token @i{w xt} represents @i{name}'s compilation semantics.
1.1 pazsan 281: (') name>comp ;
282:
283: : [COMP'] ( compilation "name" -- ; run-time -- w xt ) \ gforth bracket-comp-tick
1.15 crook 284: \g Compilation token @i{w xt} represents @i{name}'s compilation semantics.
1.1 pazsan 285: COMP' swap POSTPONE Aliteral POSTPONE ALiteral ; immediate restrict
286:
1.18 jwilke 287: : postpone, ( w xt -- ) \ gforth postpone-comma
1.26 anton 288: \g Compile the compilation semantics represented by the
289: \g compilation token @i{w xt}.
1.18 jwilke 290: dup ['] execute =
291: if
292: drop compile,
293: else
294: dup ['] compile, =
295: if
296: drop POSTPONE (compile) a,
297: else
298: swap POSTPONE aliteral compile,
299: then
300: then ;
301:
302: : POSTPONE ( "name" -- ) \ core
303: \g Compiles the compilation semantics of @i{name}.
304: COMP' postpone, ; immediate restrict
305:
1.1 pazsan 306: \ \ recurse 17may93jaw
307:
308: : recurse ( compilation -- ; run-time ?? -- ?? ) \ core
1.10 crook 309: \g Call the current definition.
1.1 pazsan 310: lastxt compile, ; immediate restrict
311:
312: \ \ compiler loop
313:
314: : compiler ( c-addr u -- )
315: 2dup find-name dup
316: if ( c-addr u nt )
317: nip nip name>comp execute
318: else
319: drop
320: 2dup snumber? dup
321: IF
322: 0>
323: IF
324: swap postpone Literal
325: THEN
326: postpone Literal
327: 2drop
328: ELSE
329: drop compiler-notfound
330: THEN
331: then ;
332:
1.22 crook 333: : [ ( -- ) \ core left-bracket
1.8 crook 334: \G Enter interpretation state. Immediate word.
1.1 pazsan 335: ['] interpreter IS parser state off ; immediate
336:
337: : ] ( -- ) \ core right-bracket
1.8 crook 338: \G Enter compilation state.
1.1 pazsan 339: ['] compiler IS parser state on ;
340:
341: \ \ Strings 22feb93py
342:
343: : ," ( "string"<"> -- ) [char] " parse
344: here over char+ allot place align ;
345:
346: : SLiteral ( Compilation c-addr1 u ; run-time -- c-addr2 u ) \ string
1.15 crook 347: \G Compilation: compile the string specified by @i{c-addr1},
348: \G @i{u} into the current definition. Run-time: return
349: \G @i{c-addr2 u} describing the address and length of the
1.10 crook 350: \G string.
1.1 pazsan 351: postpone (S") here over char+ allot place align ;
352: immediate restrict
353:
354: \ \ abort" 22feb93py
355:
356: : abort" ( compilation 'ccc"' -- ; run-time f -- ) \ core,exception-ext abort-quote
1.15 crook 357: \G If any bit of @i{f} is non-zero, perform the function of @code{-2 throw},
358: \G displaying the string @i{ccc} if there is no exception frame on the
1.10 crook 359: \G exception stack.
1.1 pazsan 360: postpone (abort") ," ; immediate restrict
361:
362: \ \ Header states 23feb93py
363:
364: : cset ( bmask c-addr -- )
1.30 anton 365: tuck @ or swap ! ;
1.1 pazsan 366:
367: : creset ( bmask c-addr -- )
1.30 anton 368: tuck @ swap invert and swap ! ;
1.1 pazsan 369:
370: : ctoggle ( bmask c-addr -- )
1.30 anton 371: tuck @ xor swap ! ;
1.1 pazsan 372:
373: : lastflags ( -- c-addr )
374: \ the address of the flags byte in the last header
375: \ aborts if the last defined word was headerless
376: last @ dup 0= abort" last word was headerless" cell+ ;
377:
378: : immediate ( -- ) \ core
1.10 crook 379: \G Make the compilation semantics of a word be to @code{execute}
380: \G the execution semantics.
1.1 pazsan 381: immediate-mask lastflags cset ;
382:
383: : restrict ( -- ) \ gforth
1.10 crook 384: \G A synonym for @code{compile-only}
1.1 pazsan 385: restrict-mask lastflags cset ;
1.18 jwilke 386:
1.1 pazsan 387: ' restrict alias compile-only ( -- ) \ gforth
1.10 crook 388: \G Remove the interpretation semantics of a word.
1.1 pazsan 389:
390: \ \ Create Variable User Constant 17mar93py
391:
1.15 crook 392: : Alias ( xt "name" -- ) \ gforth
1.1 pazsan 393: Header reveal
394: alias-mask lastflags creset
395: dup A, lastcfa ! ;
396:
397: doer? :dovar [IF]
398:
399: : Create ( "name" -- ) \ core
400: Header reveal dovar: cfa, ;
401: [ELSE]
402:
403: : Create ( "name" -- ) \ core
404: Header reveal here lastcfa ! 0 A, 0 , DOES> ;
405: [THEN]
406:
407: : Variable ( "name" -- ) \ core
408: Create 0 , ;
409:
410: : AVariable ( "name" -- ) \ gforth
411: Create 0 A, ;
412:
1.22 crook 413: : 2Variable ( "name" -- ) \ double two-variable
1.1 pazsan 414: create 0 , 0 , ;
415:
1.21 crook 416: : uallot ( n -- ) \ gforth
417: udp @ swap udp +! ;
1.1 pazsan 418:
419: doer? :douser [IF]
420:
421: : User ( "name" -- ) \ gforth
422: Header reveal douser: cfa, cell uallot , ;
423:
424: : AUser ( "name" -- ) \ gforth
425: User ;
426: [ELSE]
427:
428: : User Create cell uallot , DOES> @ up @ + ;
429:
430: : AUser User ;
431: [THEN]
432:
433: doer? :docon [IF]
434: : (Constant) Header reveal docon: cfa, ;
435: [ELSE]
436: : (Constant) Create DOES> @ ;
437: [THEN]
438:
439: : Constant ( w "name" -- ) \ core
1.15 crook 440: \G Define a constant @i{name} with value @i{w}.
1.1 pazsan 441: \G
1.15 crook 442: \G @i{name} execution: @i{-- w}
1.1 pazsan 443: (Constant) , ;
444:
445: : AConstant ( addr "name" -- ) \ gforth
446: (Constant) A, ;
447:
448: : Value ( w "name" -- ) \ core-ext
449: (Constant) , ;
450:
1.37 ! jwilke 451: : AValue ( w "name" -- ) \ core-ext
! 452: (Constant) A, ;
! 453:
1.22 crook 454: : 2Constant ( w1 w2 "name" -- ) \ double two-constant
1.1 pazsan 455: Create ( w1 w2 "name" -- )
456: 2,
457: DOES> ( -- w1 w2 )
458: 2@ ;
459:
460: doer? :dofield [IF]
461: : (Field) Header reveal dofield: cfa, ;
462: [ELSE]
463: : (Field) Create DOES> @ + ;
464: [THEN]
465: \ IS Defer What's Defers TO 24feb93py
466:
467: doer? :dodefer [IF]
468:
469: : Defer ( "name" -- ) \ gforth
470: \ !! shouldn't it be initialized with abort or something similar?
471: Header Reveal dodefer: cfa,
472: ['] noop A, ;
1.18 jwilke 473:
1.1 pazsan 474: [ELSE]
475:
476: : Defer ( "name" -- ) \ gforth
477: Create ['] noop A,
478: DOES> @ execute ;
1.18 jwilke 479:
1.1 pazsan 480: [THEN]
481:
1.25 anton 482: : Defers ( compilation "name" -- ; run-time ... -- ... ) \ gforth
483: \G Compiles the present contents of the deferred word @i{name}
484: \G into the current definition. I.e., this produces static
485: \G binding as if @i{name} was not deferred.
1.1 pazsan 486: ' >body @ compile, ; immediate
1.18 jwilke 487:
488: :noname
489: dodoes, here !does ]
490: defstart :-hook ;
491: :noname
492: ;-hook ?struc
493: [ has? xconds [IF] ] exit-like [ [THEN] ]
494: postpone (does>) dodoes,
495: defstart :-hook ;
496: interpret/compile: DOES> ( compilation colon-sys1 -- colon-sys2 ; run-time nest-sys -- ) \ core does
497:
1.20 anton 498: : <IS> ( "name" xt -- ) \ gforth
499: \g Changes the @code{defer}red word @var{name} to execute @var{xt}.
500: ' >body ! ;
501:
502: : [IS] ( compilation "name" -- ; run-time xt -- ) \ gforth bracket-is
503: \g At run-time, changes the @code{defer}red word @var{name} to
504: \g execute @var{xt}.
1.18 jwilke 505: ' >body postpone ALiteral postpone ! ; immediate restrict
506:
1.20 anton 507: ' <IS>
1.18 jwilke 508: ' [IS]
509: interpret/compile: IS ( xt "name" -- ) \ gforth
1.21 crook 510: \G A combined word made up from @code{<IS>} and @code{[IS]}.
1.18 jwilke 511:
1.20 anton 512: ' <IS>
513: ' [IS]
514: interpret/compile: TO ( w "name" -- ) \ core-ext
1.18 jwilke 515:
516: :noname ' >body @ ;
517: :noname ' >body postpone ALiteral postpone @ ;
1.25 anton 518: interpret/compile: What's ( interpretation "name" -- xt; compilation "name" -- ; run-time -- xt ) \ gforth
519: \G @i{Xt} is the XT that is currently assigned to @i{name}.
1.18 jwilke 520:
521: \ \ interpret/compile:
522:
523: struct
524: >body
525: cell% field interpret/compile-int
526: cell% field interpret/compile-comp
527: end-struct interpret/compile-struct
528:
529: : interpret/compile: ( interp-xt comp-xt "name" -- ) \ gforth
530: Create immediate swap A, A,
531: DOES>
532: abort" executed primary cfa of an interpret/compile: word" ;
533: \ state @ IF cell+ THEN perform ;
534:
535: : interpret/compile? ( xt -- flag )
536: >does-code ['] DOES> >does-code = ;
1.1 pazsan 537:
538: \ \ : ; 24feb93py
539:
540: defer :-hook ( sys1 -- sys2 )
541:
542: defer ;-hook ( sys2 -- sys1 )
543:
1.16 jwilke 544: 0 Constant defstart
545:
1.14 jwilke 546: [IFDEF] docol,
547: : (:noname) ( -- colon-sys )
548: \ common factor of : and :noname
1.34 anton 549: docol, ]comp
1.14 jwilke 550: [ELSE]
1.7 anton 551: : (:noname) ( -- colon-sys )
552: \ common factor of : and :noname
1.34 anton 553: docol: cfa,
1.14 jwilke 554: [THEN]
1.34 anton 555: 0 last-compiled ! defstart ] :-hook ;
1.7 anton 556:
1.1 pazsan 557: : : ( "name" -- colon-sys ) \ core colon
1.7 anton 558: Header (:noname) ;
559:
560: : :noname ( -- xt colon-sys ) \ core-ext colon-no-name
561: 0 last !
562: cfalign here (:noname) ;
1.1 pazsan 563:
1.14 jwilke 564: [IFDEF] fini,
565: : ; ( compilation colon-sys -- ; run-time nest-sys ) \ core semicolon
566: ;-hook ?struc fini, comp[ reveal postpone [ ; immediate restrict
567: [ELSE]
1.1 pazsan 568: : ; ( compilation colon-sys -- ; run-time nest-sys ) \ core semicolon
1.37 ! jwilke 569: ;-hook ?struc [compile] exit reveal postpone [ ; immediate restrict
1.14 jwilke 570: [THEN]
1.1 pazsan 571:
572: \ \ Search list handling: reveal words, recursive 23feb93py
573:
574: : last? ( -- false / nfa nfa )
575: last @ ?dup ;
576:
577: : (reveal) ( nt wid -- )
1.3 pazsan 578: wordlist-id dup >r
1.1 pazsan 579: @ over ( name>link ) !
580: r> ! ;
581:
582: \ make entry in wordlist-map
583: ' (reveal) f83search reveal-method !
584:
585: Variable warnings ( -- addr ) \ gforth
586: G -1 warnings T !
587:
588: : check-shadow ( addr count wid -- )
1.2 pazsan 589: \G prints a warning if the string is already present in the wordlist
590: >r 2dup 2dup r> (search-wordlist) warnings @ and ?dup if
591: >stderr
592: ." redefined " name>string 2dup type
593: compare 0<> if
594: ." with " type
595: else
596: 2drop
597: then
598: space space EXIT
599: then
600: 2drop 2drop ;
1.1 pazsan 601:
602: : reveal ( -- ) \ gforth
603: last?
604: if \ the last word has a header
605: dup ( name>link ) @ 1 and
606: if \ it is still hidden
607: dup ( name>link ) @ 1 xor ( nt wid )
608: 2dup >r name>string r> check-shadow ( nt wid )
609: dup wordlist-map @ reveal-method perform
610: else
611: drop
612: then
613: then ;
614:
615: : rehash ( wid -- )
616: dup wordlist-map @ rehash-method perform ;
617:
618: ' reveal alias recursive ( compilation -- ; run-time -- ) \ gforth
1.10 crook 619: \g Make the current definition visible, enabling it to call itself
1.1 pazsan 620: \g recursively.
621: immediate restrict
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