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xanadu - xml-tree

This commit is contained in:
erana 2012-01-21 20:30:10 +09:00
parent bbf29a40f2
commit c3c6c8f355
1 changed files with 27 additions and 13 deletions
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40
scsh/xanadu/b-tree.scm
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@ -96,7 +96,7 @@
(define (search-rec str tree side-string) ;; root param in b-treenode
(let* ((side-tree ((tree side-string)))
(len (vector-length lefttree)))
(len (vector-length side-tree)))
(do ((i 0 (+ i 1)))
((let* ((side-tree-el-first ((vector-ref side-tree i))))
(cond ((>= i len 1);;last node
@ -151,21 +151,25 @@
(define (add-rec-side-tree str side-tree)
(do ((i 0 (+ i 1)))
((cond ((not side-tree)
(vector-set! side-tree i new-node))
((let ((data (((vector-ref side-tree i) 'get-data))))
#f)
((let* ((data (((vector-ref side-tree i) 'get-data)))
(left-and-right (vector-median side-tree));;FIXME right also descend
(new-node (make-b-tree-node
(car left-and-right)
(cadr left-and-right))));;FIXME lenght mustbe n-ary
(or data (and (string? data)(string=? data "")))
(let* ((lr (vector-median side-tree));;FIXME right also descend
((new-node (make-b-tree-node (car lr) (cadr lr)))));;FIXME lenght mustbe n-ary
((new-node 'set-data!) str)
;;((side-tree 'set-left-with-index!) i new-node)
(vector-set! side-tree i new-node)
)))
((new-node 'set-data!) str)
;;((side-tree 'set-left-with-index!) i new-node)
(vector-set! side-tree i new-node)
(set! i (vector-length side-tree))))
((let ((data (((vector-ref side-tree i) 'get-data))))
(or ;;(and (string=?)
;; (string>? str data))
(and (string? data)
(string=? data ""))
(and (string=? data)
(and (string? data)
(string<? str data)
(string>? str data)))
(let ((left-and-right (vector-median side-tree)))
@ -173,9 +177,19 @@
((new-node 'set-data!) str)
(vector-set! side-tree i new-node)
))))
((= j len)
(display "node not added.") 0)
(else (display "b-tree add - never reached."))))))
;;((= i len)
;; (display "node not added .") 0)
(else (display "b-tree add - never reached.")))))
(do ((i 0 (+ i 1)))
((= i (vector-length side-tree))0)
(let ((side-tree-node (vector-ref i side-tree)))
(cond ((not (not side-tree-node))
#f)
(else (add-rec str side-tree-node)))))
)
(define (add str)
(add-rec str *tree)