File:  [gforth] / gforth / wf.fs
Revision 1.19: download - view: text, annotated - select for diffs
Sun Mar 9 12:54:33 2003 UTC (16 years, 8 months ago) by anton
Branches: MAIN
CVS tags: v0-6-1, v0-6-0, HEAD
added copyright messages to a lot of files
removed some obsolete or non-source files

    1: \ wiki forth
    2: 
    3: \ Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   20: 
   21: require string.fs
   22: 
   23: : -scan ( addr u char -- addr' u' )
   24:   >r  BEGIN  dup  WHILE  1- 2dup + c@ r@ =  UNTIL  THEN
   25:   rdrop ;
   26: : -$split ( addr u char -- addr1 u1 addr2 u2 )
   27:   >r 2dup r@ -scan 2dup + c@ r> = negate over + >r
   28:   2swap r> /string ;
   29: 
   30: \ tag handling
   31: 
   32: : .' '' parse postpone SLiteral postpone type ; immediate
   33: : s' '' parse postpone SLiteral ; immediate
   34: 
   35: Variable tag-option
   36: s" " tag-option $!
   37: 
   38: : tag ( addr u -- ) '< emit type tag-option $@ type '> emit
   39:     s" " tag-option $! ;
   40: : /tag ( addr u -- ) '< emit '/ emit type '> emit ;
   41: : tagged ( addr1 u1 addr2 u2 -- )  2dup 2>r tag type 2r> /tag ;
   42: 
   43: : opt ( addr u opt u -- )  s"  " tag-option $+!
   44:     tag-option $+! s' ="' tag-option $+! tag-option $+!
   45:     s' "' tag-option $+! ;
   46: : href= ( addr u -- )  s" href" opt ;
   47: : name= ( addr u -- )  s" name" opt ;
   48: : src=  ( addr u -- )  s" src" opt ;
   49: : alt=  ( addr u -- )  s" alt" opt ;
   50: : width=  ( addr u -- )  s" width" opt ;
   51: : height=  ( addr u -- )  s" height" opt ;
   52: : align= ( addr u -- ) s" align" opt ;
   53: : mailto: ( addr u -- ) s'  href="mailto:' tag-option $+!
   54:     tag-option $+! s' "' tag-option $+! ;
   55: 
   56: \ environment handling
   57: 
   58: Variable end-sec
   59: Variable oldenv
   60: Variable envs 30 0 [DO] 0 , [LOOP]
   61: 
   62: : env$ ( -- addr ) envs dup @ 1+ cells + ;
   63: : env ( addr u -- ) env$ $! ;
   64: : env? ( -- ) envs @ oldenv @
   65:     2dup > IF  env$ $@ tag  THEN
   66:     2dup < IF  env$ cell+ $@ /tag  env$ cell+ $off  THEN
   67:     drop oldenv ! ;
   68: : +env  1 envs +! ;
   69: : -env end-sec @ envs @ 2 > or  IF  -1 envs +! env?  THEN ;
   70: : -envs envs @ 0 ?DO  -env cr  LOOP ;
   71: : >env ( addr u -- ) +env env env? ;
   72: 
   73: \ alignment
   74: 
   75: Variable table-format
   76: Variable table#
   77: Variable table-start
   78: 
   79: : >align ( c -- )
   80:     CASE
   81: 	'l OF  s" left"      align=  ENDOF
   82: 	'r OF  s" right"     align=  ENDOF
   83: 	'c OF  s" center"    align=  ENDOF
   84: 	'< OF  s" left"      align=  ENDOF
   85: 	'> OF  s" right"     align=  ENDOF
   86: 	'= OF  s" center"    align=  ENDOF
   87: 	'~ OF  s" absmiddle" align=  ENDOF
   88:     ENDCASE ;
   89: 
   90: : >talign ( c -- )
   91:     CASE
   92: 	'l OF  s" left"   align=  ENDOF
   93: 	'r OF  s" right"  align=  ENDOF
   94: 	'c OF  s" center" align=  ENDOF
   95: 	'< OF  s" left"   align=  ENDOF
   96: 	'> OF  s" right"  align=  ENDOF
   97: 	'= OF  s" center" align=  ENDOF
   98: 	digit? IF  0 <# #S #> s" rowspan" opt
   99: 	    table# @ 1+ table-start ! THEN 0
  100:     ENDCASE ;
  101: 
  102: : >border ( c -- )
  103:     case
  104: 	'- of  s" 0" s" border" opt endof
  105: 	'+ of  s" 1" s" border" opt endof
  106:     endcase ;
  107: 
  108: \ image handling
  109: 
  110: Create imgbuf $20 allot
  111: 
  112: Create pngsig $89 c, $50 c, $4E c, $47 c, $0D c, $0A c, $1A c, $0A c,
  113: Create jfif   $FF c, $D8 c, $FF c, $E0 c, $00 c, $10 c, $4A c, $46 c,
  114:               $49 c, $46 c,
  115: 
  116: : b@ ( addr -- x )   0 swap 4 bounds ?DO  8 lshift I c@ +  LOOP ;
  117: : bw@ ( addr -- x )  0 swap 2 bounds ?DO  8 lshift I c@ +  LOOP ;
  118: 
  119: : gif? ( -- flag )
  120:     s" GIF89a" imgbuf over str=
  121:     s" GIF87a" imgbuf over str= or ;
  122: : gif-size ( -- w h )
  123:     imgbuf 8 + c@ imgbuf 9 + c@ 8 lshift +
  124:     imgbuf 6 + c@ imgbuf 7 + c@ 8 lshift + ;
  125: 
  126: : png? ( -- flag )
  127:     pngsig 8 imgbuf over str= ;
  128: : png-size ( -- w h )
  129:     imgbuf $14 + b@ imgbuf $10 + b@ ;
  130: 
  131: : jpg? ( -- flag )
  132:     jfif 10 imgbuf over str= ;
  133: : jpg-size ( fd -- w h )  >r
  134:     2.  BEGIN
  135: 	2dup r@ reposition-file throw
  136: 	imgbuf $10 r@ read-file throw 0<>
  137: 	imgbuf bw@ $FFC0 $FFD0 within 0= and  WHILE
  138: 	imgbuf 2 + bw@ 2 + 0 d+  REPEAT
  139:     2drop imgbuf 5 + bw@ imgbuf 7 + bw@  rdrop ;
  140: 
  141: : img-size ( fd -- w h )  >r
  142:     gif? IF  gif-size  rdrop EXIT  THEN
  143:     jpg? IF  r> jpg-size  EXIT  THEN
  144:     png? IF  png-size  rdrop EXIT  THEN
  145:     0 0 ;
  146: 
  147: : .img-size ( addr u -- )
  148:     r/o open-file IF  drop  EXIT  THEN  >r
  149:     imgbuf $20 r@ read-file throw drop
  150:     r@ img-size
  151:     r> close-file throw
  152:     ?dup IF  0 <# #S #> width=   THEN
  153:     ?dup IF  0 <# #S #> height=  THEN ;
  154: 
  155: \ link creation
  156: 
  157: Variable link
  158: Variable link-sig
  159: Variable link-suffix
  160: Variable iconpath
  161: 
  162: Variable do-size
  163: Variable do-icon
  164: 
  165: Defer parse-line
  166: 
  167: : .img ( addr u -- ) dup >r '| -$split  dup r> = IF  2swap  THEN 
  168:     dup IF  2swap alt=  ELSE  2drop  THEN
  169:     tag-option $@len >r over c@ >align  tag-option $@len r> = 1+ /string
  170:     tag-option $@len >r over c@ >border tag-option $@len r> = 1+ /string
  171:     2dup .img-size src= s" img" tag ;
  172: : >img ( -- )   '{ parse type '} parse .img ;
  173: 
  174: : alt-suffix ( -- )
  175:     link-suffix $@len 2 - link-suffix $!len
  176:     s" [" link-suffix 0 $ins
  177:     s" ]" link-suffix $+!
  178:     link-suffix $@ alt= ;
  179: 
  180: : get-icon ( addr u -- )  iconpath @ IF  2drop  EXIT  THEN
  181:     link-suffix $! s" .*" link-suffix $+!
  182:     s" icons" open-dir throw >r
  183:     BEGIN
  184: 	pad $100 r@ read-dir throw  WHILE
  185: 	pad swap 2dup link-suffix $@ filename-match
  186: 	IF  s" icons/" iconpath $! iconpath $+!
  187: 	    iconpath $@ 2dup .img-size src= '- >border
  188: 	    alt-suffix  s" img" tag true
  189: 	ELSE  2drop  false  THEN
  190:     UNTIL  ELSE  drop  THEN
  191:     r> close-dir throw ;
  192: 
  193: : link-icon? ( -- )  do-icon @ 0= ?EXIT
  194:     iconpath @  IF  iconpath $off  THEN
  195:     link $@ + 1- c@ '/ = IF  s" index.html"  ELSE  link $@  THEN
  196:     BEGIN  '. $split 2swap 2drop dup  WHILE
  197: 	2dup get-icon  REPEAT  2drop ;
  198: 
  199: : link-size? ( -- )  do-size @ 0= ?EXIT
  200:     link $@ r/o open-file IF  drop  EXIT  THEN >r
  201:     r@ file-size throw $400 um/mod nip ."  (" 0 u.r ." k)"
  202:     r> close-file throw ;
  203: 
  204: : link-sig? ( -- )
  205:     link $@ link-sig $! s" .sig" link-sig $+!
  206:     link-sig $@ r/o open-file IF  drop  EXIT  THEN
  207:     close-file throw
  208:     ."  (" link-sig $@ href= s" a" tag
  209:     s" |-icons/sig.gif" .img ." sig" s" /a" tag ." )" ;
  210: 
  211: : link-options ( addr u -- addr' u' )
  212:     do-size off  do-icon on
  213:     over c@ '% = over 0> and IF  do-size on  1 /string  THEN
  214:     over c@ '\ = over 0> and IF  do-icon off 1 /string  THEN ;
  215: 
  216: s" Gforth" environment? [IF] s" 0.5.0" str= [IF] 
  217: : parse-string ( c-addr u -- ) \ core,block
  218:     s" *evaluated string*" loadfilename>r
  219:     push-file #tib ! >tib !
  220:     >in off blk off loadfile off -1 loadline !
  221:     ['] parse-line catch
  222:     pop-file r>loadfilename throw ;
  223: [ELSE]
  224: : parse-string ( addr u -- )
  225:     evaluate-input cell new-tib #tib ! tib !
  226:     ['] parse-line catch pop-file throw ;
  227: [THEN] [THEN]
  228: 
  229: : .link ( addr u -- ) dup >r '| -$split  dup r> = IF  2swap  THEN 
  230:     link-options link $!
  231:     link $@len 0= IF  2dup link $! s" .html" link $+!  THEN
  232:     link $@ href= s" a" tag link-icon?
  233:     parse-string s" a" /tag link-size? link-sig? ;
  234: : >link ( -- )  '[ parse type '] parse .link ;
  235: 
  236: \ line handling
  237: 
  238: : char? ( -- c )  >in @ char swap >in ! ;
  239: : parse-tag ( addr u char -- )
  240:     >r r@ parse type
  241:     r> parse 2swap tagged ;
  242: 
  243: : .text ( -- ) 	>in @ >r char drop
  244:     source r@ /string >in @ r> - nip
  245:     bounds ?DO  I c@
  246: 	case
  247: 	    '& of  ." &amp;"  endof
  248: 	    '< of  ." &lt;"   endof
  249: 	    dup emit
  250: 	endcase
  251:     LOOP ;
  252: 
  253: Create do-words  $100 0 [DO] ' .text , [LOOP]
  254: 
  255: :noname '( emit 1 >in +! ; '( cells do-words + !
  256: 
  257: : bind-char ( xt -- )  char cells do-words + ! ;
  258: 
  259: : char>tag ( -- ) char >r
  260: :noname bl sword postpone SLiteral r@ postpone Literal
  261:     postpone parse-tag postpone ; r> cells do-words + ! ;
  262: 
  263: : >tag '\ parse type '\ parse tag ;
  264: 
  265: char>tag * b
  266: char>tag _ em
  267: char>tag # code
  268: 
  269: ' >link bind-char [
  270: ' >img  bind-char {
  271: ' >tag  bind-char \
  272: 
  273: : do-word ( char -- )  cells do-words + perform ;
  274: 
  275: : word? ( -- addr u )  >in @ >r bl sword r> >in ! ;
  276: 
  277: wordlist Constant autoreplacements
  278: 
  279: :noname ( -- )
  280:     BEGIN char? do-word source nip >in @ = UNTIL ; is parse-line
  281: 
  282: : parse-line+ ( -- )
  283:     BEGIN
  284: 	word? autoreplacements search-wordlist
  285: 	IF    execute  bl sword 2drop
  286: 	    source >in @ 1- /string drop c@ bl = >in +!
  287: 	ELSE  char? do-word  THEN
  288: 	source nip >in @ = UNTIL ;
  289: 
  290: : parse-to ( char -- ) >r
  291:     BEGIN  char? dup r@ <> WHILE
  292: 	do-word source nip >in @ = UNTIL  ELSE  drop  THEN
  293:     r> parse type ;
  294: 
  295: \ autoreplace
  296: 
  297: : autoreplace ( <[string|url]> -- )
  298:     get-current autoreplacements set-current
  299:     Create set-current
  300:     here 0 , '[ parse 2drop '] parse rot $!
  301:     DOES> $@ .link ;
  302:     
  303: \ paragraph handling
  304: 
  305: : parse-par ( -- )
  306:     BEGIN  parse-line+ cr refill  WHILE
  307: 	source nip 0= UNTIL  THEN ;
  308: 
  309: : par ( addr u -- ) env? 2dup tag parse-par /tag cr cr ;
  310: : line ( addr u -- ) env? 2dup tag parse-line+ /tag cr cr ;
  311: 
  312: \ scan strings
  313: 
  314: : get-rest ( addr -- ) 0 parse -trailing rot $! ;
  315: Create $lf 1 c, #lf c,
  316: : get-par ( addr -- )  >r  s" " r@ $+!
  317:     BEGIN  0 parse 2dup s" ." str= 0=  WHILE
  318: 	r@ $@len IF  $lf count r@ $+!  THEN  r@ $+!
  319: 	refill 0= UNTIL  ELSE  2drop  THEN
  320:     rdrop ;
  321: 
  322: \ toc handling
  323: 
  324: Variable toc-link
  325: 
  326: : >last ( addr link -- link' )
  327:     BEGIN  dup @  WHILE  @  REPEAT  ! 0 ;
  328: 
  329: Variable create-navs
  330: Variable nav$
  331: Variable nav-name
  332: Variable nav-file
  333: Create nav-buf 0 c,
  334: : nav+ ( char -- )  nav-buf c! nav-buf 1 nav-file $+! ;
  335: 
  336: : >nav ( addr u -- addr' u' )
  337:     nav-name $!  create-navs @ 0=
  338:     IF  s" navigate/nav.scm" r/w create-file throw create-navs !  THEN
  339:     s' (script-fu-nav-file "' nav$ $! nav-name $@ nav$ $+!
  340:     s' " "./navigate/' nav$ $+!  s" " nav-file $!
  341:     nav-name $@ bounds ?DO
  342: 	I c@  dup 'A 'Z 1+ within IF  bl + nav+
  343: 	ELSE  dup 'a 'z 1+ within IF  nav+
  344: 	ELSE  dup '0 '9 1+ within IF  nav+
  345: 	ELSE  dup  bl = swap '- = or IF  '- nav+
  346: 	THEN  THEN  THEN  THEN
  347: 	LOOP
  348:     nav-file $@ nav$ $+! s' .jpg")' nav$ $+!
  349:     nav$ $@ create-navs @ write-line throw
  350:     s" [" nav$ $! nav-name $@ nav$ $+!
  351:     s" |-navigate/" nav$ $+! nav-file $@ nav$ $+! s" .jpg" nav$ $+!
  352:     nav$ $@ ;
  353: 
  354: : toc, ( n -- ) , '| parse >nav here 0 , $! 0 parse here 0 , $! ;
  355: : up-toc   align here toc-link >last , 0 toc, ;
  356: : top-toc  align here toc-link >last , 1 toc, ;
  357: : this-toc align here toc-link >last , 2 toc, ;
  358: : sub-toc  align here toc-link >last , 3 toc, ;
  359: : new-toc  toc-link off ;
  360: 
  361: Variable toc-name
  362: 
  363: : .toc-entry ( toc flag -- )
  364:     swap cell+ dup @ swap cell+ dup cell+ $@ 2dup href= s" a" tag
  365:     '# scan 1 /string toc-name $@ compare >r
  366:     $@ .img swap
  367:     IF
  368: 	case
  369: 	    2 of  s" ^]|-icons/arrow_up.jpg" .img  endof
  370: 	    3 of
  371: 		r@ 0= IF s" *]|-icons/circle.jpg"
  372: 		    ELSE s" v]|-icons/arrow_down.jpg"  THEN  .img  endof
  373: 	endcase
  374:     ELSE
  375: 	case
  376: 	    0 of  s" ^]|-icons/arrow_up.jpg" .img  endof
  377: 	    1 of  s" >]|-icons/arrow_right.jpg" .img  endof
  378: 	    2 of  s" *]|-icons/circle.jpg" .img  endof
  379: 	    3 of  s" v]|-icons/arrow_down.jpg" .img  endof
  380: 	endcase
  381:     THEN
  382:     s" a" /tag rdrop
  383:     ;
  384: : print-toc ( -- ) cr 0 parse
  385:     dup 0= IF  toc-name $! 0  ELSE
  386: 	toc-name $! toc-name $@ name= s" " s" a" tagged  2
  387:     THEN  >r
  388:     toc-link  BEGIN  @ dup  WHILE
  389: 	dup cell+ @ 3 = r@ 0= and IF  rdrop 1 >r s" br" tag cr  THEN
  390: 	dup cell+ @ r@ >= IF  dup r@ 2 = .toc-entry  THEN
  391: 	dup cell+ @ 2 = r@ 2 = and IF  s" br" tag cr  THEN
  392:     REPEAT  drop rdrop  cr ;
  393: 
  394: \ handle global tags
  395: 
  396: Variable indentlevel
  397: : indent ( n -- )  indentlevel @ over indentlevel !
  398:     2dup < IF swap DO  -env -env  LOOP  EXIT THEN
  399:     2dup > IF      DO  s" dl" >env s" dt" >env  LOOP EXIT THEN
  400:     2dup = IF drop IF  -env  s" dt" >env  THEN THEN ;
  401: : +indent ( -- )  indentlevel @ IF  -env s" dd" >env  THEN ;
  402: 
  403: wordlist constant longtags
  404: 
  405: longtags set-current
  406: 
  407: : --- 0 indent cr s" hr" tag cr +indent ;
  408: : *   1 indent s" h1" line +indent ;
  409: : **  1 indent s" h2" line +indent ;
  410: : *** 2 indent s" h3" line +indent ;
  411: : -- 0 indent cr print-toc ;
  412: : && 0 parse name= s" " s" a" tagged ;
  413: : - s" ul" env s" li" par ;
  414: : + s" ol" env s" li" par ;
  415: : << +env ;
  416: : <* s" center" >env ;
  417: : <red  s" #ff0000" s" color" opt s" font" >env ;
  418: : red> -env ;
  419: : >> -env ;
  420: : *> -env ;
  421: : :: interpret ;
  422: : . end-sec on 0 indent ;
  423: : :code s" pre" >env
  424:     BEGIN  source >in @ /string type cr refill  WHILE
  425: 	source s" :endcode" str= UNTIL  THEN
  426:   -env ;
  427: : \ postpone \ ;
  428: 
  429: definitions
  430:     
  431: \ Table
  432: 
  433: : |tag  table-format $@ table# @ /string drop c@ >talign
  434:     >env  1 table# +! ;
  435: : |d  table# @ table-start @ > IF  -env  THEN  s" td" |tag ;
  436: : |h  table# @ table-start @ > IF  -env  THEN  s" th" |tag ;
  437: : |line  s" tr" >env  table-start @ table# ! ;
  438: : line|  -env -env cr ;
  439: 
  440: : next-char ( -- char )  source drop >in @ + c@ ;
  441: 
  442: longtags set-current
  443: 
  444: : <| bl sword table-format $! table-start off bl sword
  445:     dup IF  s" border" opt  ELSE  2drop  THEN s" table" >env ;
  446: : |> -env -env cr cr ;
  447: : +| |line
  448:     BEGIN
  449: 	|h '| parse-to next-char '+ =  UNTIL line| ;
  450: : -| |line
  451:     BEGIN
  452: 	|d '| parse-to next-char '- =  UNTIL line| ;
  453: 
  454: definitions
  455: 
  456: \ parse a section
  457: 
  458: : section-line ( -- )  >in off
  459:     bl sword longtags search-wordlist
  460:     IF    execute
  461:     ELSE  source nip IF  >in off s" p" par  THEN  THEN ;
  462: : refill-loop ( -- )  end-sec off
  463:     BEGIN  refill  WHILE
  464: 	section-line end-sec @ UNTIL  THEN ;
  465: : parse-section ( -- )
  466:     refill-loop ;
  467: 
  468: \ HTML head
  469: 
  470: : .title ( addr u -- )
  471:     .' <!doctype html public "-//w3c//dtd html 4.0 transitional//en">' cr
  472:     s" html" >env s" head" >env
  473:     .'   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">' cr
  474:     s" title" tagged cr
  475:     -env ;
  476: 
  477: \ HTML trailer
  478: 
  479: Variable mail
  480: Variable mail-name
  481: Variable orig-date
  482: 
  483: : .trailer
  484:     s" address" >env s" center" >env
  485:     orig-date @ IF  ." Created " orig-date $@ type ." . "  THEN
  486:     ." Last modified: " time&date rot 0 u.r swap 1-
  487:     s" janfebmaraprmayjunjulaugsepoctnovdec" rot 3 * /string 3 min type
  488:     0 u.r ."  by "
  489:     s" Mail|icons/mail.gif" .img mail $@ mailto: mail-name $@ s" a" tagged
  490:     -envs ;
  491: 
  492: \ top word
  493: 
  494: : parse" ( -- addr u ) '" parse 2drop '" parse ;
  495: 
  496: : maintainer ( -- )
  497:     bl sword mail $! parse" mail-name $! ;
  498: : created ( -- )
  499:     bl sword orig-date $! ;
  500: 
  501: Variable style$
  502: : style> style$ @ 0= IF  s" " style$ $!  THEN  style$ $@ tag-option $! ;
  503: : >style tag-option $@ style$ $! s" " tag-option $! ;
  504: 
  505: : style  style> opt >style ;
  506: : background ( -- )  parse" s" background" style ;
  507: : text ( -- )  parse" s" text" style ;
  508:     warnings @ warnings off
  509: : link ( -- )  parse" s" link" style ;
  510:     warnings !
  511: : vlink ( -- ) parse" s" vlink" style ;
  512: : marginheight ( -- ) parse" s" marginheight" style ;
  513: 
  514: : wf ( -- )
  515:     outfile-id >r
  516:     bl sword r/w create-file throw to outfile-id
  517:     parse" .title
  518:     +env style> s" body" env env?
  519:     ['] parse-section catch .trailer
  520:     outfile-id close-file throw
  521:     r> to outfile-id
  522:     dup 0< IF  throw  ELSE  drop  THEN ;
  523: 
  524: : eval-par ( addr u -- )
  525:   s" wf-temp.wf" r/w create-file throw >r
  526:   r@ write-file r> close-file throw
  527:   push-file s" wf-temp.wf" r/o open-file throw loadfile !
  528:   parse-par parse-section
  529:   loadfile @ close-file swap 2dup or
  530:   pop-file  drop throw throw
  531:   s" wf-temp.wf" delete-file throw ;
  532: 
  533: \ simple text data base
  534: 
  535: Variable last-entry
  536: Variable field#
  537: 
  538: : table: ( xt n -- )  Create , ,  1 field# !
  539:     DOES> 2@ >in @ >r longtags set-current
  540:     Create definitions swap , r> >in !
  541:     here last-entry !
  542:     dup 0 DO  0 ,  LOOP
  543:     1 DO  s" " last-entry @ I cells + $!  LOOP
  544:     last-entry @ get-rest
  545:     DOES> dup cell+ swap perform ;
  546: 
  547: : field:  Create field# @ , 1 field# +!
  548: DOES> @ cells last-entry @ + get-rest ;
  549: : par:  Create field# @ , 1 field# +!
  550: DOES> @ cells last-entry @ + get-par ;
  551: 
  552: : >field  ' >body @ cells postpone Literal postpone + ; immediate

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