[racket] sxpath, txpath and accessors

dang ... thanks so much

I don't know how much time you saved me, this was the tack I was on


#lang racket (require sxml);(require sxml/html)
(define doc(ssax:xml->sxml(open-input-string"<AAA>
   <BBB>
      <CCC/>
      <WWW> www content <ttt/></WWW>
      <zzz/>
   </BBB>
   <XXX>
      <DDD>
           <EEE/>
           <FFF>
              <HHH/>
              <GGG>
                 <JJJ>content under jjj
                    <QQQ><lll/>content under qqq</QQQ>
                    <rrr/>
                 </JJJ>
                 <JJJ/>
              </GGG>
              <HHH/>
           </FFF>
      </DDD>
   </XXX>
   <CCC>content in ccc 
      <DDD/>
   </CCC>
</AAA>")   '()))
(sxml:element? doc)
(sxml:node? doc)
(sxml:element?    ((txpath"/AAA/XXX/preceding::CCC")doc)); #f
(sxml:element?(car((txpath"/AAA/XXX/preceding::CCC")doc)))
(sxml:element?(car((sxpath'(AAA XXX))doc)))
(sxml:node?   (car((sxpath'(AAA XXX))doc)))
(sxml:node?((sxpath'(AAA XXX))doc))

((    (sxml:preceding '*)doc)'(// XXX))
((    (sxml:preceding '*any*)doc)'(// XXX))
((    (sxml:preceding '*any*)(cdr doc))'(// XXX))
((    (sxml:preceding '*)(cdr doc))'(// XXX))
((    (sxml:preceding '*any*)(cadr doc))'(// XXX))
((    (sxml:preceding '*)(cadr doc))'(// XXX))

((    (sxml:preceding '*any*) doc) '(AAA XXX))
((    (sxml:preceding '*any*) doc) '(// XXX))
((    (sxml:preceding (ntype?? '*any*)) doc) '(// XXX))
((    (sxml:preceding (ntype?? '*text*)) doc) '("content"))
((    (sxml:preceding 'ntype??) doc)'(XXX))
((    (sxml:preceding ntype??) doc)'(// XXX))
((    (sxml:preceding '*) doc) '(// XXX))
((    (sxml:preceding (ntype?? '*)) doc) '(// XXX))

((  (sxml:preceding '*any*)doc)'(AAA XXX))
((  (sxml:preceding '*)doc)'(AAA XXX))
((  (sxml:preceding '*)doc)"//XXX")
;((  (sxml:preceding '*)doc)((txpath"//XXX"))) ; ERROR
((  (sxml:preceding '@)doc)'(AAA XXX))

((  (sxml:preceding '*any*)doc)"/AAA/XXX/")
((  (sxml:preceding '*any*)doc)"//XXX")

((  (sxml:preceding '(WWW))  doc)doc)
((  (sxml:preceding '(CCC))  doc)doc)

((  (sxml:preceding '*any*)  doc)'CCC)
((  (sxml:preceding '*any*)  doc)'(CCC))
((  (sxml:preceding '*any*)  doc)"CCC")

((  (sxml:preceding '@)  doc)'(CCC))
((  (sxml:preceding '*)  doc)'(CCC))
((  (sxml:preceding '*)  doc)'((CCC)))
((  (sxml:preceding '*)  doc)"CCC")

((  (sxml:preceding ntype??) doc)'(CCC))
((  (sxml:preceding 'ntype??) doc)'(CCC))
((  (sxml:preceding (ntype?? '*)) doc)'(CCC))

((  (sxml:preceding equal?)  doc)'CCC)
((  (sxml:preceding equal?)  doc)'(CCC))
((  (sxml:preceding 'equal?)  doc)'(CCC))
((  (sxml:preceding equal?)  doc)"CCC")
((  (sxml:preceding equal?)  doc)"WWW")
((  (sxml:preceding 'equal?)  doc)'(WWW))

((txpath"/AAA/XXX/preceding::CCC")doc)
((txpath"/AAA/XXX/preceding::WWW")doc)


           
((sxpath '(AAA XXX (sxml:preceding '(WWW)))) doc)
((sxpath '(AAA XXX (sxml:preceding (WWW)))) doc)

((sxpath'(AAA XXX (preceding:"WWW")))doc)
((sxpath '(aaa xxx ((sxml::preceding "www")))) doc)
((sxpath '(AAA XXX ((sxml::preceding "WWW")))) doc)
((sxpath '(AAA XXX ((sxml::preceding "WWW")))) doc)

((ntype?? 'www)doc)
((sxpath '(aaa xxx ((sxml:preceding (ntype?? 'www))))) doc)

;((sxml:preceding ((sxpath '(aaa xxx www))))doc)

; ((sxpath '(aaa xxx ((sxml:preceding '(bbb))))) doc)
; ((sxpath '(aaa xxx ((sxml:preceding '(ccc))))) doc)
; ((sxpath '(aaa xxx ((sxml::preceding "www")))) doc)
; 
; ((sxpath '(aaa xxx (sxml:preceding (www)))) doc)
; 
; ;((sxml:preceding ((sxpath '(aaa xxx www)doc)
; 
; 
; ;((txpath"/aaa/xxx/fff/ddd/ancestor::")doc)
; ;((sxpath '(aaa xxx fff((sxml:ancestor)))) doc)
; 
; 
; (sxml:element? doc)
; ((ntype?? 'www)doc)
; ((ntype-names?? '(aaa ccc xxx))doc)
; 
; 
; 
; ;((txpath"/aaa/xxx/preceding::ccc")doc)
; ((sxpath '(aaa xxx ((sxml:preceding '(ccc))))) doc)
; ;((sxpath '(aaa xxx (sxml:preceding (ntype?? 'ccc)))) doc)
; ((ntype?? 'ccc)doc)
; 
; ;((sxpath '(aaa xxx :preceding '(ccc)) doc)
; ;((sxpath '((sxml:preceding '(aaa xxx ccc)))) doc)
; ;((sxml:preceding '(ccc) doc))
; 
; ((sxpath '(aaa xxx '(sxml:preceding '(www)))) doc)
; ((sxpath '(aaa xxx (sxml:preceding '(www)))) doc)
; 
; 
; 
; ; ((txpath"/aaa/xxx/preceding::www/following::lll")doc);expect '((lll) (lll))
; ; ((txpath"/aaa/xxx/preceding::www/following")doc)
; ; ((txpath"/aaa/xxx/preceding::ccc")doc)
; 
;