xeals/origami.el
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Factor in newlines

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Greg Sexton 2015-04-26 13:21:16 +01:00
parent 2b07b5c6fd
commit a8eb81e09c
1 changed files with 27 additions and 23 deletions
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50
origami-parsers.el
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@ -67,35 +67,35 @@ position in the CONTENT."
;;; TODO: support tabs
(defun origami-indent-parser (create)
(cl-labels ((lines (string)
(-> string
(origami-get-positions ".*?\r?\n")
(->> (-filter (lambda (line)
(not (s-blank? (s-trim (car line)))))))))
(cl-labels ((lines (string) (origami-get-positions string ".*?\r?\n"))
(annotate-levels (lines)
(-map (lambda (line)
(let ((beg (cdr line))
(let ((indent (length (car (s-match "^ *" (car line)))))
(beg (cdr line))
(end (+ (cdr line) (length (car line)) -1)))
(vector (length (car (s-match "^ *" (car line))))
beg
end
(- end beg))))
(if (s-blank? (s-trim (car line)))
'newline ;sentinel representing line break
(vector indent beg end (- end beg)))))
lines))
(indent (line) (aref line 0))
(indent (line) (if (eq line 'newline) -1 (aref line 0)))
(beg (line) (aref line 1))
(end (line) (aref line 2))
(offset (line) (aref line 3))
(collapse-same-level (levels)
(reverse (-reduce-from (lambda (acc level)
(if (= (indent level) (indent (car acc)))
(cons (vector (indent (car acc))
(beg (car acc))
(end level)
(offset (car acc)))
(cdr acc))
(cons level acc)))
(list (car levels))
(cdr levels))))
(collapse-same-level (lines)
(->>
(cdr lines)
(-reduce-from (lambda (acc line)
(cond ((and (eq line 'newline) (eq (car acc) 'newline)) acc)
((= (indent line) (indent (car acc)))
(cons (vector (indent (car acc))
(beg (car acc))
(end line)
(offset (car acc)))
(cdr acc)))
(t (cons line acc))))
(list (car lines)))
(remove 'newline)
reverse))
(create-tree (levels)
(if (null levels)
levels
@ -103,7 +103,11 @@ position in the CONTENT."
(->> levels
(-partition-by (lambda (l) (= (indent l) curr-indent)))
(-partition-all 2)
(-map (lambda (x) (cons (caar x) (create-tree (cadr x)))))))))
(-mapcat (lambda (x)
;takes care of multiple identical levels, introduced when there are newlines
(-concat
(-map 'list (butlast (car x)))
(list (cons (-last-item (car x)) (create-tree (cadr x)))))))))))
(build-nodes (tree)
(if (null tree) (cons 0 nil)
;; complexity here is due to having to find the end of the children so that the