forked from mirrors/org-mode
org-element-headline-parser: Use deferred properties
* lisp/org-element.el (org-element--headline-raw-value): New function calculating :raw-value property dynamically. (org-element-headline-parser): Use the new function, deferring :raw-value to reduce memory footprint of the cache.
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@ -911,6 +911,61 @@ Return value is a plist."
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(t (setq plist (plist-put plist :closed time))))))
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plist))))
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(defun org-element-headline-parser--deferred (element)
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"Parse and set extra properties for ELEMENT headline in BUFFER."
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(with-current-buffer (org-element-property :buffer element)
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(org-with-wide-buffer
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;; Update robust boundaries to not
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;; include property drawer and planning.
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;; Changes there can now invalidate the
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;; properties.
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(org-element-put-property
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element :robust-begin
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(let ((contents-begin (org-element-property :contents-begin element))
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(contents-end (org-element-property :contents-end element)))
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(when contents-begin
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(progn (goto-char contents-begin)
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(when (looking-at-p org-element-planning-line-re)
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(forward-line))
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(when (looking-at org-property-drawer-re)
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(goto-char (match-end 0)))
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;; If there is :pre-blank, we
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;; need to be careful about
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;; robust beginning.
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(max (if (< (+ 2 contents-begin) contents-end)
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(+ 2 contents-begin)
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0)
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(point))))))
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(org-element-put-property
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element :robust-end
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(let ((contents-end (org-element-property :contents-end element))
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(robust-begin (org-element-property :robust-begin element)))
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(when contents-end
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(when (> (- contents-end 2) robust-begin)
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(- contents-end 2)))))
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(unless (org-element-property :robust-end element)
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(org-element-put-property element :robust-begin nil))
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(goto-char (org-element-property :begin element))
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(setcar (cdr element)
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(nconc
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(nth 1 element)
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(org-element--get-time-properties)))
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(goto-char (org-element-property :begin element))
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(setcar (cdr element)
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(nconc
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(nth 1 element)
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(org-element--get-node-properties)))))
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;; Return nil.
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nil)
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(defun org-element--headline-raw-value (headline beg-offset end-offset)
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"Retrieve :raw-value in HEADLINE according to BEG-OFFSET and END-OFFSET."
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(with-current-buffer (org-element-property :buffer headline)
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(let ((beg (org-element-property :begin headline)))
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(org-trim
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(buffer-substring-no-properties
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(+ beg beg-offset) (+ beg end-offset))))))
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(defun org-element-headline-parser (&optional _ raw-secondary-p)
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"Parse a headline.
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@ -962,11 +1017,13 @@ Assume point is at beginning of the headline."
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(title-end (point))
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(raw-value (org-trim
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(buffer-substring-no-properties title-start title-end)))
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(archivedp (member org-element-archive-tag tags))
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(raw-value-deferred
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(org-element-deferred-create
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nil #'org-element--headline-raw-value
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(- title-start begin) (- title-end begin)))
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(archivedp (if (member org-element-archive-tag tags) t nil))
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(footnote-section-p (and org-footnote-section
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(string= org-footnote-section raw-value)))
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(standard-props (org-element--get-node-properties))
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(time-props (org-element--get-time-properties))
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(end
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(save-excursion
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(if (re-search-forward (org-headline-re true-level) nil t)
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@ -980,19 +1037,13 @@ Assume point is at beginning of the headline."
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(progn (goto-char end)
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(skip-chars-backward " \r\t\n")
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(line-beginning-position 2))))
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(robust-begin (and contents-begin
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(progn (goto-char contents-begin)
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(when (looking-at-p org-element-planning-line-re)
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(forward-line))
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(when (looking-at org-property-drawer-re)
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(goto-char (match-end 0)))
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(robust-begin
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;; If there is :pre-blank, we
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;; need to be careful about
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;; robust beginning.
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(max (if (< (+ 2 contents-begin) contents-end)
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(+ 2 contents-begin)
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0)
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(point)))))
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(when contents-begin
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(when (< (+ 2 contents-begin) contents-end)
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(+ 2 contents-begin))))
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(robust-end (and robust-begin
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(when (> (- contents-end 2) robust-begin)
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(- contents-end 2)))))
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@ -1000,8 +1051,7 @@ Assume point is at beginning of the headline."
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(let ((headline
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(org-element-create
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'headline
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(nconc
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(list :raw-value raw-value
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(list :raw-value raw-value-deferred
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:begin begin
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:end end
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:pre-blank
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@ -1027,12 +1077,13 @@ Assume point is at beginning of the headline."
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:post-affiliated begin
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:secondary (alist-get
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'headline
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org-element-secondary-value-alist))
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time-props
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standard-props))))
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org-element-secondary-value-alist)
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:deferred
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(org-element-deferred-create
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t #'org-element-headline-parser--deferred)))))
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(org-element-put-property
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headline :title
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(if raw-secondary-p raw-value
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(if raw-secondary-p (org-element-deferred-alias :raw-value)
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(org-element--parse-objects
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(progn (goto-char title-start)
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(skip-chars-forward " \t")
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