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* got rid of yas/registered-snippets

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* undo/redo much smoother
* hooks last while yas/minor-mode is t (this may be changed)
This commit is contained in:
capitaomorte 2009-07-04 20:12:49 +00:00
parent 0932310893
commit 97608378d3
1 changed files with 69 additions and 145 deletions
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214
yasnippet.el
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@ -263,8 +263,12 @@ You can customize the key through `yas/trigger-key'."
" yas" " yas"
:group 'editing :group 'editing
(define-key yas/minor-mode-map yas/trigger-key 'yas/expand) (define-key yas/minor-mode-map yas/trigger-key 'yas/expand)
(if yas/minor-mode
(set 'yas/registered-snippets (make-hash-table :test 'eq))) (progn
(add-hook 'post-command-hook 'yas/post-command-handler nil t)
(add-hook 'pre-command-hook 'yas/pre-command-handler t t))
(remove-hook 'post-command-hook 'yas/post-command-handler)
(remove-hook 'pre-command-hook 'yas/pre-command-handler)))
(defun yas/minor-mode-auto-on () (defun yas/minor-mode-auto-on ()
"Turn on YASnippet minor mode unless `yas/dont-activate' is "Turn on YASnippet minor mode unless `yas/dont-activate' is
@ -529,41 +533,41 @@ the template of a snippet in the current snippet-table."
(buffer-substring-no-properties (yas/field-start field) (buffer-substring-no-properties (yas/field-start field)
(yas/field-end field))) (yas/field-end field)))
(defun yas/undo-in-progress ()
(or undo-in-progress
(eq this-command 'undo)))
(defun yas/make-control-overlay (start end) (defun yas/make-control-overlay (start end)
"..." "..."
(let ((overlay (make-overlay start (let ((overlay (make-overlay start
end end
nil nil
nil t
t))) nil)))
(overlay-put overlay 'keymap yas/keymap) (overlay-put overlay 'keymap yas/keymap)
(overlay-put overlay 'yas/snippet snippet) (overlay-put overlay 'yas/snippet snippet)
(overlay-put overlay 'evaporate t)
overlay)) overlay))
(defun yas/on-field-overlay-modification (overlay after? beg end &optional length) (defun yas/on-field-overlay-modification (overlay after? beg end &optional length)
"To be written" "To be written"
(unless undo-in-progress (cond (after?
(cond ((and after? (mapcar #'yas/update-mirrors (yas/snippets-at-point)))
yas/registered-snippets) ((not (or after? (yas/undo-in-progress)))
(maphash #'(lambda (key snippet) (let ((field (overlay-get overlay 'yas/field)))
(yas/update-mirrors snippet)) (unless (yas/field-modified-p field)
yas/registered-snippets)) (let ((inhibit-modification-hooks t))
((not after?) (reduce #'(lambda (ov1 ov2)
(let ((field (overlay-get overlay 'yas/field))) (delete-region (overlay-end ov1) (overlay-start ov2))
(unless (yas/field-modified-p field) ov2)
(let ((inhibit-modification-hooks t)) (yas/hidden-overlays-in (yas/field-start field) (yas/field-end field))))
(reduce #'(lambda (ov1 ov2) (setf (yas/field-modified-p field) t))))
(delete-region (overlay-end ov1) (overlay-start ov2)) (t
ov2) nil)))
(yas/hidden-overlays-in (yas/field-start field) (yas/field-end field))))
(setf (yas/field-modified-p field) t))))
(t
nil))))
(add-to-list 'debug-ignored-errors "^Exit the snippet first$") (add-to-list 'debug-ignored-errors "^Exit the snippet first$")
(defun yas/on-hidden-overlay-modification (overlay after? beg end &optional length) (defun yas/on-hidden-overlay-modification (overlay after? beg end &optional length)
(unless undo-in-progress (unless (yas/undo-in-progress)
(unless (or after? (unless (or after?
(null (overlay-buffer overlay))) (null (overlay-buffer overlay)))
;; (save-excursion ;; (save-excursion
@ -611,18 +615,24 @@ will be deleted before inserting template."
(goto-char template-end) (goto-char template-end)
(delete-char length) (delete-char length)
(let ((snippet (yas/snippet-create template-beg template-end))) (let ((snippet (yas/snippet-create template-beg template-end)))
;; Do more indenting
(save-excursion (save-excursion
;; Do more indenting
(goto-char (overlay-start (yas/snippet-control-overlay snippet))) (goto-char (overlay-start (yas/snippet-control-overlay snippet)))
(while (re-search-forward "$>" nil t) (while (re-search-forward "$>" nil t)
(replace-match "") (replace-match "")
(indent-according-to-mode)))))))) (indent-according-to-mode)))
;; Push an undo action
(push `(apply yas/take-care-of-redo ,template-beg ,template-end)
buffer-undo-list))))))
(defun yas/take-care-of-redo (beg end)
(message "taking care of undo between %s and %s" beg end)
(push `(apply yas/snippet-create ,beg ,end)
buffer-undo-list))
(defun yas/snippet-create (begin end) (defun yas/snippet-create (begin end)
(narrow-to-region begin end) (narrow-to-region begin end)
;; Create and register a brand new snippet in the local (let ((snippet (yas/make-snippet)))
;; `yas/registered-snippets' var. Create fields.
(let ((snippet (yas/register-snippet (yas/make-snippet))))
(goto-char (point-min)) (goto-char (point-min))
(yas/snippet-parse-create snippet) (yas/snippet-parse-create snippet)
@ -1128,10 +1138,10 @@ when the condition evaluated to non-nil."
(and (zerop (- (yas/field-start field) (yas/field-end field))) (and (zerop (- (yas/field-start field) (yas/field-end field)))
(yas/field-parent-field field))) (yas/field-parent-field field)))
(defun yas/snippet-of-current-keymap () (defun yas/snippets-at-point ()
(first (remove nil (mapcar #'(lambda (ov) (remove nil (mapcar #'(lambda (ov)
(overlay-get ov 'yas/snippet)) (overlay-get ov 'yas/snippet))
(overlays-at (point)))))) (overlays-at (point)))))
(defun yas/next-field (&optional arg) (defun yas/next-field (&optional arg)
@ -1139,7 +1149,7 @@ when the condition evaluated to non-nil."
(interactive) (interactive)
(let* ((arg (or arg (let* ((arg (or arg
1)) 1))
(snippet (yas/snippet-of-current-keymap)) (snippet (first (yas/snippets-at-point)))
(active-field (overlay-get yas/active-field-overlay 'yas/field)) (active-field (overlay-get yas/active-field-overlay 'yas/field))
(number (and snippet (number (and snippet
(+ arg (+ arg
@ -1162,7 +1172,8 @@ when the condition evaluated to non-nil."
(move-overlay yas/active-field-overlay (move-overlay yas/active-field-overlay
(overlay-end (car (yas/field-overlay-pair field))) (overlay-end (car (yas/field-overlay-pair field)))
(overlay-start (cdr (yas/field-overlay-pair field)))) (overlay-start (cdr (yas/field-overlay-pair field))))
;; create a new overlay ;; create a new overlay, this is the only yas overlay that
;; shouldn't evaporate
(setq yas/active-field-overlay (setq yas/active-field-overlay
(make-overlay (overlay-end (car (yas/field-overlay-pair field))) (make-overlay (overlay-end (car (yas/field-overlay-pair field)))
(overlay-start (cdr (yas/field-overlay-pair field))) (overlay-start (cdr (yas/field-overlay-pair field)))
@ -1184,55 +1195,12 @@ up the snippet does not delete it!"
(interactive) (interactive)
(goto-char (yas/commit-snippet snippet))) (goto-char (yas/commit-snippet snippet)))
;; Snippet register and unregister routines.
;;
(defvar yas/registered-snippets nil
"A hash table holding all active snippets")
(eval-when-compile
(make-variable-buffer-local 'yas/registered-snippets))
(defun yas/register-snippet (snippet)
"Register SNIPPET in the `yas/registered-snippets' table. Add
a `yas/pre-command-handler' function to the buffer-local
`pre-command-hook' and `yas/post-command-handler' to the
`post-command-hook'. This should exist while registered snippets
exists in the current buffer. Return snippet"
(unless yas/registered-snippets
(setq yas/registered-snippets (make-hash-table :test 'eq)))
;;
;; register the snippet
;;
(puthash (yas/snippet-id snippet) snippet yas/registered-snippets)
;;
;; setup the `pre-command-hook' and `post-command-hook'
;;
(add-hook 'pre-command-hook 'yas/pre-command-handler 'local)
(add-hook 'post-command-hook 'yas/post-command-handler 'local)
snippet)
(defun yas/unregister-snippet (snippet)
"Unregister snippet from the `yas/registered-snippets' table.
Remove the handlers registered in `yas/register-snippet' if no
more snippets registered in the current buffer."
;;
;;
;;
(remhash (yas/snippet-id snippet) yas/registered-snippets)
;;
;;
;;
(when (eq 0
(hash-table-count yas/registered-snippets))
(remove-hook 'pre-command-hook 'yas/pre-command-handler 'local)
(remove-hook 'post-command-hook 'yas/post-command-handler 'local)))
(defun yas/exterminate-snippets () (defun yas/exterminate-snippets ()
"Remove all locally registered snippets and remove "Remove all snippets in buffer"
`yas/check-cleanup-snippet' from the `post-command-hook'"
(interactive) (interactive)
(when yas/registered-snippets (mapcar #'yas/commit-snippet (remove nil (mapcar #'(lambda (ov)
(maphash #'(lambda (key value) (yas/commit-snippet value)) yas/registered-snippets))) (overlay-get ov 'yas/snippet))
(overlays-in (point-min) (point-max))))))
(defun yas/delete-overlay-region (overlay) (defun yas/delete-overlay-region (overlay)
(delete-region (overlay-start overlay) (overlay-end overlay))) (delete-region (overlay-start overlay) (overlay-end overlay)))
@ -1300,29 +1268,23 @@ exiting the snippet."
;; up... ;; up...
;; ;;
(run-hooks 'yas/after-exit-snippet-hook) (run-hooks 'yas/after-exit-snippet-hook)
(yas/unregister-snippet snippet)
(widen) (widen)
exit)) exit))
(defun yas/check-commit-snippet () (defun yas/check-commit-snippet ()
"Checks if point exited the currently active field of the "Checks if point exited the currently active field of the
snippet, if so cleans up the whole snippet up. snippet, if so cleans up the whole snippet up."
(unless (yas/undo-in-progress)
This function is part of `post-command-hook' while (let* ((snippet (first (yas/snippets-at-point))))
registered snippets last."
(unless undo-in-progress
(let* ((snippet (yas/snippet-of-current-keymap))
(field (and yas/active-field-overlay
(overlay-buffer yas/active-field-overlay)
(overlay-get yas/active-field-overlay 'yas/field))))
(cond ((null snippet) (cond ((null snippet)
;; ;;
;; No snippet at point, cleanup *all* snippets ;; No snippet at point, cleanup *all* snippets
;; ;;
(yas/exterminate-snippets)) (yas/exterminate-snippets))
((or (not field) ((let ((beg (overlay-start yas/active-field-overlay))
(and field (end (overlay-end yas/active-field-overlay)))
(not (yas/point-in-field-p field)))) (or (> (point) end)
(< (point) beg)))
;; A snippet exitss at point, but point left the currently ;; A snippet exitss at point, but point left the currently
;; active field overlay ;; active field overlay
(save-excursion (yas/commit-snippet snippet))) (save-excursion (yas/commit-snippet snippet)))
@ -1333,13 +1295,6 @@ registered snippets last."
t t
nil))))) nil)))))
(defun yas/point-in-field-p (field &optional point)
"..."
(let ((point (or point
(point))))
(and (>= point (yas/field-start field))
(<= point (yas/field-end field)))))
;; ;;
;; Pre and post command handlers ;; Pre and post command handlers
;; ;;
@ -1347,53 +1302,21 @@ registered snippets last."
) )
(defun yas/post-command-handler () (defun yas/post-command-handler ()
;; (when (eq this-command 'yas/next-field) (yas/check-commit-snippet))
;; (when (null (car buffer-undo-list))
;; (setq buffer-undo-list (cdr buffer-undo-list))))
;; (yas/check-commit-snippet)
)
;; Debug functions. Use (or change) at will whenever needed. ;; Debug functions. Use (or change) at will whenever needed.
(defun yas/toggle-hidden-overlays ()
(interactive)
(mapcar #'(lambda (ov)
(when (overlay-get ov 'yas/hidden)
(overlay-put ov 'invisible (not (overlay-get ov 'invisible)))))
(overlays-in (point-min) (point-max))))
(defun yas/debug-some-vars () (defun yas/debug-some-vars ()
(interactive) (interactive)
(with-output-to-temp-buffer "*YASnippet trace*" (with-output-to-temp-buffer "*YASnippet trace*"
(princ "Interesting YASnippet vars: \n\n") (princ "Interesting YASnippet vars: \n\n")
(princ (format "Register hash-table: %s\n\n" yas/registered-snippets))
;; (cond ((not yas/registered-snippets)
;; (princ " No snippet hash table!"))
;; ((eq (hash-table-count yas/registered-snippets) 0)
;; (princ " No registered snippets\n"))
;; (t
;; (maphash #'(lambda (key snippet)
;; (princ (format "\t key %s for snippet %s\n"
;; key
;; (yas/snippet-id snippet)))
;; (princ (format "\t Control overlay %s\n"
;; (yas/snippet-control-overlay snippet)))
;; (dolist (field (yas/snippet-fields snippet))
;; (princ (format "\t field %s with %s mirrors is %s and %s"
;; (yas/field-number field)
;; (length (yas/field-mirrors field))
;; (if (yas/field-probably-deleted-p field)
;; "DELETED"
;; "alive")
;; (if (eq field (overlay-get yas/active-field-overlay 'yas/field))
;; "ACTIVE!\n"
;; "NOT ACTIVE!\n")))
;; (princ (format "\t\t Covering: %s\n" (yas/current-field-text field)))
;; ;; (princ (format "\t\t Displays: %s\n" (yas/field-text-for-display field)))
;; ;; (dolist (mirror (yas/field-mirrors field))
;; ;; (princ (format "\t\t Mirror displays: \n"
;; ;; (if (eq field (yas/field-primary-field field))
;; ;; "Primary" "Mirror"))))
;; ))
;; yas/registered-snippets)))
(princ (format "\nPost command hook: %s\n" post-command-hook)) (princ (format "\nPost command hook: %s\n" post-command-hook))
(princ (format "\nPre command hook: %s\n" pre-command-hook)) (princ (format "\nPre command hook: %s\n" pre-command-hook))
@ -1425,15 +1348,16 @@ registered snippets last."
(yas/exterminate-snippets) (yas/exterminate-snippets)
(erase-buffer) (erase-buffer)
(setq buffer-undo-list nil) (setq buffer-undo-list nil)
(html-mode)
(let ((abbrev)) (let ((abbrev))
(if (require 'ido nil t) ;; (if (require 'ido nil t)
(setq abbrev (ido-completing-read "Snippet abbrev: " '("crazy" "prip" "prop"))) ;; (setq abbrev (ido-completing-read "Snippet abbrev: " '("crazy" "prip" "prop")))
(setq abbrev "prop")) ;; (setq abbrev "prop"))
(setq abbrev "bosta")
(insert abbrev)) (insert abbrev))
(objc-mode)
(unless quiet (unless quiet
(add-hook (make-local-variable 'post-command-hook) 'yas/debug-some-vars)) (add-hook 'post-command-hook 'yas/debug-some-vars 't 'local))
(yas/expand)) )
(provide 'yasnippet) (provide 'yasnippet)