ld/multiple-cursors.el
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Macros must be defined before they are used to be expanded properly

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Mon ouïe 2012-08-27 13:17:14 +02:00
parent f2add1d250
commit dc22766af5
1 changed files with 37 additions and 38 deletions
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75
multiple-cursors-core.el
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@ -37,6 +37,43 @@
"The face used for fake regions" "The face used for fake regions"
:group 'multiple-cursors) :group 'multiple-cursors)
(defmacro mc/add-fake-cursor-to-undo-list (&rest forms)
"Make sure point is in the right place when undoing"
`(let ((undo-cleaner (cons 'apply (cons 'deactivate-cursor-after-undo (list id)))))
(setq buffer-undo-list (cons undo-cleaner buffer-undo-list))
,@forms
(if (eq undo-cleaner (car buffer-undo-list)) ;; if nothing has been added to the undo-list
(setq buffer-undo-list (cdr buffer-undo-list)) ;; then pop the cleaner right off again
(setq buffer-undo-list ;; otherwise add a function to activate this cursor
(cons (cons 'apply (cons 'activate-cursor-for-undo (list id))) buffer-undo-list)))))
(defmacro mc/for-each-fake-cursor (&rest forms)
"Runs the body for each fake cursor, bound to the name cursor"
`(mapc #'(lambda (cursor)
(when (mc/fake-cursor-p cursor)
,@forms))
(overlays-in (point-min) (point-max))))
(defmacro mc/save-excursion (&rest forms)
"Saves and restores all the state that multiple-cursors cares about."
`(let ((current-state (mc/store-current-state-in-overlay
(make-overlay (point) (point) nil nil t))))
(overlay-put current-state 'type 'original-cursor)
(save-excursion ,@forms)
(mc/pop-state-from-overlay current-state)))
(defmacro mc/save-window-scroll (&rest forms)
"Saves and restores the window scroll position"
`(let ((p (set-marker (make-marker) (point)))
(start (set-marker (make-marker) (window-start)))
(hscroll (window-hscroll)))
,@forms
(goto-char p)
(set-window-start nil start)
(set-window-hscroll nil hscroll)
(set-marker p nil)
(set-marker start nil)))
(defun mc/make-cursor-overlay-at-eol (pos) (defun mc/make-cursor-overlay-at-eol (pos)
"Create overlay to look like cursor at end of line." "Create overlay to look like cursor at end of line."
(let ((overlay (make-overlay pos pos nil nil nil))) (let ((overlay (make-overlay pos pos nil nil nil)))
@ -100,7 +137,6 @@ highlights the entire width of the window."
"Restore the state stored in given overlay and then remove the overlay." "Restore the state stored in given overlay and then remove the overlay."
(mc/restore-state-from-overlay o) (mc/restore-state-from-overlay o)
(mc/remove-fake-cursor o)) (mc/remove-fake-cursor o))
(defun mc/delete-region-overlay (o) (defun mc/delete-region-overlay (o)
"Remove the dependent region overlay for a given cursor overlay." "Remove the dependent region overlay for a given cursor overlay."
(ignore-errors (ignore-errors
@ -151,16 +187,6 @@ cursor with updated info."
(mc/execute-command cmd) (mc/execute-command cmd)
(mc/create-fake-cursor-at-point id))))))))) (mc/create-fake-cursor-at-point id)))))))))
(defmacro mc/add-fake-cursor-to-undo-list (&rest forms)
"Make sure point is in the right place when undoing"
`(let ((undo-cleaner (cons 'apply (cons 'deactivate-cursor-after-undo (list id)))))
(setq buffer-undo-list (cons undo-cleaner buffer-undo-list))
,@forms
(if (eq undo-cleaner (car buffer-undo-list)) ;; if nothing has been added to the undo-list
(setq buffer-undo-list (cdr buffer-undo-list)) ;; then pop the cleaner right off again
(setq buffer-undo-list ;; otherwise add a function to activate this cursor
(cons (cons 'apply (cons 'activate-cursor-for-undo (list id))) buffer-undo-list)))))
(defun mc/fake-cursor-p (o) (defun mc/fake-cursor-p (o)
"Predicate to check if an overlay is a fake cursor" "Predicate to check if an overlay is a fake cursor"
(eq (overlay-get o 'type) 'fake-cursor)) (eq (overlay-get o 'type) 'fake-cursor))
@ -189,33 +215,6 @@ cursor with updated info."
(mc/pop-state-from-overlay mc--stored-state-for-undo) (mc/pop-state-from-overlay mc--stored-state-for-undo)
(setq mc--stored-state-for-undo nil))) (setq mc--stored-state-for-undo nil)))
(defmacro mc/for-each-fake-cursor (&rest forms)
"Runs the body for each fake cursor, bound to the name cursor"
`(mapc #'(lambda (cursor)
(when (mc/fake-cursor-p cursor)
,@forms))
(overlays-in (point-min) (point-max))))
(defmacro mc/save-excursion (&rest forms)
"Saves and restores all the state that multiple-cursors cares about."
`(let ((current-state (mc/store-current-state-in-overlay
(make-overlay (point) (point) nil nil t))))
(overlay-put current-state 'type 'original-cursor)
(save-excursion ,@forms)
(mc/pop-state-from-overlay current-state)))
(defmacro mc/save-window-scroll (&rest forms)
"Saves and restores the window scroll position"
`(let ((p (set-marker (make-marker) (point)))
(start (set-marker (make-marker) (window-start)))
(hscroll (window-hscroll)))
,@forms
(goto-char p)
(set-window-start nil start)
(set-window-hscroll nil hscroll)
(set-marker p nil)
(set-marker start nil)))
(defun mc/prompt-for-inclusion-in-whitelist (original-command) (defun mc/prompt-for-inclusion-in-whitelist (original-command)
"Asks the user, then adds the command either to the once-list or the all-list." "Asks the user, then adds the command either to the once-list or the all-list."
(let ((all-p (y-or-n-p (format "Do %S for all cursors?" original-command)))) (let ((all-p (y-or-n-p (format "Do %S for all cursors?" original-command))))