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606 lines
24 KiB
606 lines
24 KiB
(require 'polymode-common)
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;;; INITIALIZATION
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(defgeneric pm-initialize (config)
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"Initialize current buffer with CONFIG.
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First initialize the -hostmode and -innermodes slots of polymode
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object ...")
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(defmethod pm-initialize ((config pm-polymode))
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;; fixme: reinstalation leads to infloop of pm--fontify-region-original and others ...
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;; On startup with local auto vars emacs reinstals the mode twice .. waf?
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;; Temporary fix: don't install twice
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(unless pm/polymode
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(let* ((chunkmode (clone (symbol-value (oref config :hostmode))))
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(_ (oset chunkmode -buffer (current-buffer)))
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;; set if nil, to allow unspecified host chunkmodes to be used in minor modes
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(host-mode (or (oref chunkmode :mode)
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(oset chunkmode :mode major-mode))))
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(unless (or (eq major-mode host-mode)
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(eq polymode-major-mode host-mode))
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(let ((polymode-mode t)) ;;major-modes might check it
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(funcall host-mode)))
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;; fixme: maybe: inconsistencies?
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;; 1) not calling pm-install-buffer on host-buffer
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;; But, we are not creating/installing a new buffer here .. so it is a
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;; different thing .. and is probably ok
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;; 2) not calling config's :minor-mode (polymode function).
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;; But polymode function calls pm-initialize... so I guess it is ok
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(oset config -hostmode chunkmode)
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(setq pm/polymode config)
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(setq pm/chunkmode chunkmode)
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(setq pm/type 'host)
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(add-hook 'flyspell-incorrect-hook 'pm--flyspel-dont-highlight-in-chunkmodes nil t)
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(prog1 (pm--setup-buffer) ; general setup for host and innermode buffers
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(let ((PI pm/polymode) IFs)
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;; aggregate and run hooks; parents first
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(while PI
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(setq IFs (append (and (slot-boundp PI :init-functions) ; don't cascade
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(oref PI :init-functions))
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IFs)
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PI (and (slot-boundp PI :parent-instance)
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(oref PI :parent-instance))))
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(run-hooks 'IFs))))))
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(defmethod pm-initialize ((config pm-polymode-one))
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(call-next-method)
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(eval `(oset config -innermodes
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(list (clone ,(oref config :innermode))))))
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(defmethod pm-initialize ((config pm-polymode-multi))
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(call-next-method)
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(oset config -innermodes
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(mapcar (lambda (sub-name)
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(clone (symbol-value sub-name)))
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(oref config :innermodes))))
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;;; BUFFERS
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(defgeneric pm-get-buffer (chunkmode &optional span-type)
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"Get the indirect buffer associated with SUBMODE and
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SPAN-TYPE. Should return nil if buffer has not yet been
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installed. Also see `pm-get-span'.")
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(defmethod pm-get-buffer ((chunkmode pm-chunkmode) &optional type)
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(oref chunkmode -buffer))
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(defmethod pm-get-buffer ((chunkmode pm-hbtchunkmode) &optional type)
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(cond ((eq 'body type) (oref chunkmode -buffer))
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((eq 'head type) (oref chunkmode -head-buffer))
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((eq 'tail type) (oref chunkmode -tail-buffer))
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(t (error "Don't know how to select buffer of type '%s' for chunkmode '%s' of class '%s'"
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type (pm--object-name chunkmode) (class-of chunkmode)))))
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(defgeneric pm-select-buffer (chunkmode span)
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"Ask SUBMODE to select (make current) its indirect buffer
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corresponding to the type of the SPAN returned by
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`pm-get-span'.")
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(defmethod pm-select-buffer ((chunkmode pm-chunkmode) span)
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"Select the buffer associated with SUBMODE.
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Install a new indirect buffer if it is not already installed.
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For this method to work correctly, SUBMODE's class should define
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`pm-install-buffer' and `pm-get-buffer' methods."
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(let* ((type (car span))
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(buff (pm-get-buffer chunkmode type)))
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(unless (buffer-live-p buff)
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(pm-install-buffer chunkmode type)
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(setq buff (pm-get-buffer chunkmode type)))
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(pm--select-buffer buff)))
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(defmethod pm-select-buffer ((chunkmode pm-hbtchunkmode) span)
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(call-next-method)
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(pm--transfer-vars-from-base))
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(defmethod pm-select-buffer ((config pm-polymode-multi-auto) &optional span)
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(if (null (car span))
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(pm-select-buffer (oref config -hostmode) span)
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(let ((type (car span))
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(proto (symbol-value (oref config :auto-innermode)))
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chunkmode)
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(save-excursion
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(goto-char (cadr span))
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(unless (eq type 'head)
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(re-search-backward (oref proto :head-reg) nil 'noerr))
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(re-search-forward (oref proto :retriever-regexp))
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(let* ((str (or (match-string-no-properties (oref proto :retriever-num))
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(error "retriever subexpression didn't match")))
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(name (concat "auto-innermode:" str)))
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(setq chunkmode
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(or (loop for obj in (oref config -auto-innermodes)
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when (equal name (object-name-string obj))
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return obj)
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(let ((new-obj (clone proto name
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:mode (pm--get-mode-symbol-from-name str))))
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(object-add-to-list config '-auto-innermodes new-obj)
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new-obj)))))
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(pm-select-buffer chunkmode span))))
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(defgeneric pm-install-buffer (chunkmode &optional type)
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"Ask SUBMODE to install an indirect buffer corresponding to
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span TYPE. Should return newly installed/retrieved buffer.")
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(defmethod pm-install-buffer ((chunkmode pm-chunkmode) &optional type)
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"Independently on the TYPE call `pm/create-indirect-buffer'
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create and install a new buffer in slot -buffer of SUBMODE."
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(oset chunkmode -buffer
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(pm--create-chunkmode-buffer-maybe chunkmode type)))
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(defmethod pm-install-buffer ((chunkmode pm-hbtchunkmode) type)
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"Depending of the TYPE install an indirect buffer into
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slot -buffer of SUBMODE. Create this buffer if does not exist."
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(pm--set-chunkmode-buffer chunkmode type
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(pm--create-chunkmode-buffer-maybe chunkmode type)))
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(defun pm--get-adjusted-background (prop)
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;; if > lighten on dark backgroun. Oposite on light.
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(color-lighten-name (face-background 'default)
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(if (eq (frame-parameter nil 'background-mode) 'light)
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(- prop) ;; darken
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prop)))
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(defun pm--adjust-chunk-face (beg end face)
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;; propertize 'face of the region by adding chunk specific configuration
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(interactive "r")
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(when face
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(with-current-buffer (current-buffer)
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(let ((face (or (and (numberp face)
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(cons 'background-color
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(pm--get-adjusted-background face)))
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face))
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(pchange nil))
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(while (not (eq pchange end))
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(setq pchange (next-single-property-change beg 'face nil end))
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(put-text-property beg pchange 'face
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`(,face ,@(get-text-property beg 'face)))
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(setq beg pchange))))))
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(defun pm--adjust-visual-line-mode (vlm)
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(when (not (eq visual-line-mode vlm))
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(if (null vlm)
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(visual-line-mode -1)
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(visual-line-mode 1))))
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;; move only in post-command hook, after buffer selection
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(defvar pm--can-move-overlays nil)
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(defun pm--move-overlays-to (new-buff)
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(when pm--can-move-overlays
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(mapc (lambda (o)
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(move-overlay o (overlay-start o) (overlay-end o) new-buff))
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(overlays-in 1 (1+ (buffer-size))))))
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(defun pm--transfer-vars-from-base ()
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(let ((bb (pm/base-buffer)))
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(dolist (var '(buffer-file-name))
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(set var (buffer-local-value var bb)))))
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(defun pm--select-buffer (buffer)
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(when (and (not (eq buffer (current-buffer)))
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(buffer-live-p buffer))
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(let ((point (point))
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(window-start (window-start))
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(visible (pos-visible-in-window-p))
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(oldbuf (current-buffer))
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(vlm visual-line-mode)
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(ractive (region-active-p))
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(mkt (mark t))
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(bis buffer-invisibility-spec))
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(pm--move-overlays-to buffer)
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(switch-to-buffer buffer)
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(setq buffer-invisibility-spec bis)
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(pm--adjust-visual-line-mode vlm)
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(bury-buffer oldbuf)
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;; fixme: wha tis the right way to do this ... activate-mark-hook?
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(if (not ractive)
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(deactivate-mark)
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(set-mark mkt)
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(activate-mark))
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(goto-char point)
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;; Avoid the display jumping around.
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(when visible
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(set-window-start (get-buffer-window buffer t) window-start)))))
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(defun pm--setup-buffer (&optional buffer)
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;; General buffer setup, should work for indirect and base buffers
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;; alike. Assumes pm/polymode and pm/chunkmode is already in place. Return buffer.
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(let ((buff (or buffer (current-buffer))))
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(with-current-buffer buff
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;; Don't let parse-partial-sexp get fooled by syntax outside
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;; the chunk being fontified.
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;; font-lock, forward-sexp etc should see syntactic comments
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;; (set (make-local-variable 'parse-sexp-lookup-properties) t)
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(set (make-local-variable 'font-lock-dont-widen) t)
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(when pm--dbg-fontlock
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(setq pm--fontify-region-original
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font-lock-fontify-region-function)
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(set (make-local-variable 'font-lock-fontify-region-function)
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#'pm/fontify-region)
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(setq pm--syntax-begin-function-original
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(or syntax-begin-function ;; Emacs > 23.3
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font-lock-beginning-of-syntax-function))
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(set (make-local-variable 'syntax-begin-function)
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#'pm/syntax-begin-function))
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(set (make-local-variable 'polymode-mode) t)
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;; Indentation should first narrow to the chunk. Modes
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;; should normally just bind `indent-line-function' to
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;; handle indentation.
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(when (and indent-line-function ; not that it should ever be nil...
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(oref pm/chunkmode :protect-indent-line))
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(setq pm--indent-line-function-original indent-line-function)
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(set (make-local-variable 'indent-line-function) 'pm-indent-line))
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;; Kill the base buffer along with the indirect one; careful not
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;; to infloop.
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;; (add-hook 'kill-buffer-hook
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;; '(lambda ()
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;; ;; (setq kill-buffer-hook nil) :emacs 24 bug (killing
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;; ;; dead buffer triggers an error)
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;; (let ((base (buffer-base-buffer)))
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;; (if base
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;; (unless (buffer-local-value 'pm--killed-once base)
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;; (kill-buffer base))
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;; (setq pm--killed-once t))))
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;; t t)
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(when pm--dbg-hook
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(add-hook 'post-command-hook 'polymode-select-buffer nil t))
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(object-add-to-list pm/polymode '-buffers (current-buffer)))
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buff))
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(defvar pm--ib-prefix "")
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(defun pm--create-indirect-buffer (mode)
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"Create indirect buffer with major MODE and initialize appropriately.
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This is a low lever function which must be called, one way or
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another from `pm/install' method. Among other things store
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`pm/polymode' from the base buffer (must always exist!) in
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the newly created buffer.
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Return newlly created buffer."
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(unless (buffer-local-value 'pm/polymode (pm/base-buffer))
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(error "`pm/polymode' not found in the base buffer %s" (pm/base-buffer)))
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(setq mode (pm--get-available-mode mode))
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(with-current-buffer (pm/base-buffer)
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(let* ((config (buffer-local-value 'pm/polymode (current-buffer)))
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(new-name
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(generate-new-buffer-name
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(format "%s%s[%s]" pm--ib-prefix (buffer-name)
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(replace-regexp-in-string "-mode" "" (symbol-name mode)))))
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(new-buffer (make-indirect-buffer (current-buffer) new-name))
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;; (hook pm/indirect-buffer-hook)
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(file (buffer-file-name))
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(base-name (buffer-name))
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(jit-lock-mode nil)
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(coding buffer-file-coding-system))
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(with-current-buffer new-buffer
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(let ((polymode-mode t)) ;;major-modes might check it
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(funcall mode))
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;; hopefully temporary hack:
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(pm--activate-jit-lock-mode-maybe)
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(setq polymode-major-mode mode)
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;; Avoid the uniqified name for the indirect buffer in the mode line.
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(when pm--dbg-mode-line
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(setq mode-line-buffer-identification
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(propertized-buffer-identification base-name)))
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(setq pm/polymode config)
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(setq buffer-file-coding-system coding)
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(setq buffer-file-name file)
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(vc-find-file-hook))
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new-buffer)))
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;;; SPAN MANIPULATION
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(defgeneric pm-get-span (chunkmode &optional pos)
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"Ask a chunkmode for the span at point.
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Return a list of three elements (TYPE BEG END OBJECT) where TYPE
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is a symbol representing the type of the span surrounding
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POS (head, tail, body). BEG and END are the coordinates of the
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span. OBJECT is a sutable object which is 'responsable' for this
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span. That is, OBJECT could be dispached upon with
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`pm-select-buffer' or other methods form the interface.
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Should return nil if there is no SUBMODE specific span around POS.")
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(defmethod pm-get-span (chunkmode &optional pos)
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"Simply return nil. Base mode usually do/can not compute the span"
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nil)
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(defmethod pm-get-span ((config pm-polymode) &optional pos)
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"Apply pm-get-span on every element of chunkmodes slot of config object.
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Return a cons (chunkmode . span), for which START is closest to
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POS (and before it); i.e. the innermost span. POS defaults to
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point."
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(save-restriction
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(widen)
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;; fixme: host should be last, to take advantage of the chunkmodes computation
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(let* ((smodes (cons (oref config -hostmode)
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(oref config -innermodes)))
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(start (point-min))
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(end (point-max))
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(pos (or pos (point)))
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(span (list nil start end nil))
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val)
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;; (save-restriction
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;; (widen)
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(dolist (sm smodes)
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(setq val (pm-get-span sm pos))
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(when (and val
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(or (> (nth 1 val) start)
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(< (nth 2 val) end)))
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(if (or (car val)
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(null span))
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(setq span val
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start (nth 1 val)
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end (nth 2 val))
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;; nil car means outer chunkmode (usually host). And it can be an
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;; intersection of spans returned by 2 different neighbour inner
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;; chunkmodes. See rapport mode for an example
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(setq start (max (nth 1 val)
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(nth 1 span))
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end (min (nth 2 val)
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(nth 2 span)))
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(setcar (cdr span) start)
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(setcar (cddr span) end)
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)))
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;; )
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(unless (and (<= start end) (<= pos end) (>= pos start))
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(error "Bad polymode selection: %s, %s"
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(list start end) pos))
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(when (null (car span)) ; chunkmodes can compute the host span by returning nil
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(setcar (last span) (oref config -hostmode)))
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span)))
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;; No need for this one so far. Basic method iterates through -innermodes
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;; anyhow.
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;; (defmethod pm-get-span ((config pm-polymode-multi) &optional pos))
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(defmethod pm-get-span ((config pm-polymode-multi-auto) &optional pos)
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(let ((span-other (call-next-method))
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(proto (symbol-value (oref config :auto-innermode))))
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(if (oref proto :head-reg)
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(let ((span (pm--span-at-point (oref proto :head-reg)
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(oref proto :tail-reg)
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pos)))
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(if (and span-other
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(or (> (nth 1 span-other) (nth 1 span))
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(< (nth 2 span-other) (nth 2 span))))
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;; treat intersections with the host mode
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(if (car span-other)
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span-other ;not host
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;; at this stage, car span should better be nil; no explicit check here.
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(setcar (cdr span-other) (max (nth 1 span-other) (nth 1 span)))
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(setcar (cddr span-other) (min (nth 2 span-other) (nth 2 span)))
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span-other)
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(append span (list config)))) ;fixme: this returns config as last object
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span-other)))
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(defmethod pm-get-span ((chunkmode pm-hbtchunkmode) &optional pos)
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"Return a list of the form (TYPE POS-START POS-END SELF).
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TYPE can be 'body, 'head or 'tail. SELF is just a chunkmode object
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in this case."
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(with-slots (head-reg tail-reg head-mode tail-mode) chunkmode
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(let* ((span (pm--span-at-point head-reg tail-reg pos))
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(type (car span)))
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(when (or (and (eq type 'head) (eq head-mode 'host))
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(and (eq type 'tail) (or (eq tail-mode 'host)
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(and (null tail-mode)
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(eq head-mode 'host)))))
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(setcar span nil))
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(append span (list chunkmode)))))
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(defun pm--default-matcher (reg ahead)
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(if (< ahead 0)
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(if (re-search-backward reg nil t)
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(cons (match-beginning 0) (match-end 0)))
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(if (re-search-forward reg nil t)
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(cons (match-beginning 0) (match-end 0)))))
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;; fixme: there should be a simpler way... check the code and document
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(defun pm--span-at-point-fun-fun (hd-matcher tl-matcher)
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(save-excursion
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(let ((pos (point))
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(posh (funcall hd-matcher -1)))
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(if (null posh)
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;; special first chunk
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(let ((posh1 (progn (goto-char (point-min))
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(funcall hd-matcher 1))))
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(if (and posh1
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(<= (car posh1) pos)
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(< pos (cdr posh1)))
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(list 'head (car posh1) (cdr posh1))
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(list nil (point-min) (or (car posh1)
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(point-max)))))
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(let ((post (progn (goto-char (car posh))
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(or (funcall tl-matcher 1)
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(cons (point-max) (point-max))))))
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(if (and (<= (cdr posh) pos)
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(< pos (car post)))
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(list 'body (cdr posh) (car post))
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(if (and (<= (car post) pos)
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(< pos (cdr post)))
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(list 'tail (car post) (cdr post))
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(if (< pos (cdr post))
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;; might be in the head
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(progn
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(goto-char (car post))
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(let ((posh1 (funcall hd-matcher -1)))
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(if (and (<= (car posh1) pos)
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(< pos (cdr posh1)))
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(list 'head (car posh1) (cdr posh1))
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(list nil (cdr posh) (car posh1))))) ;; posh is point min, fixme: not true anymore?
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|
(goto-char (cdr post))
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|
(let ((posh1 (or (funcall hd-matcher 1)
|
|
(cons (point-max) (point-max)))))
|
|
(if (and posh
|
|
(<= (car posh1) pos )
|
|
(< pos (cdr posh1)))
|
|
(list 'head (car posh1) (cdr posh1))
|
|
(list nil (cdr post) (car posh1))))))))))))
|
|
|
|
(defun pm--span-at-point-reg-reg (head-matcher tail-matcher)
|
|
;; efficent reg-reg lookup with only 2 searches
|
|
(save-excursion
|
|
(let* ((pos (point))
|
|
(reg (concat "\\(?1:\\(" tail-matcher "\\)\\)\\|\\(?2:\\(" head-matcher "\\)\\)"))
|
|
(pos1-end (if (re-search-backward reg nil t)
|
|
(match-end 0)))
|
|
(pos1-tail? (or (null pos1-end) (match-end 1))) ;; consider point-min as a tail
|
|
(pos1-end (goto-char (or pos1-end (point-min))))
|
|
(pos2-start (if (re-search-forward reg nil t)
|
|
(match-beginning 0)))
|
|
(pos2-end (and pos2-start (match-end 0)))
|
|
(pos2-tail? (and pos2-start (match-end 1)))
|
|
(pos2-start (or pos2-start (point-max)))) ;consider pointmax as head
|
|
(if (or (< pos pos2-start)
|
|
(eq pos (point-max)))
|
|
;; inside doc or chunk body
|
|
(if pos1-tail?
|
|
(list nil pos1-end pos2-start) ;doc
|
|
(list 'body pos1-end pos2-start)) ; chunk body
|
|
;; else inside head or tail
|
|
(if (< pos pos2-end) ; <- this one should be always true
|
|
(if pos2-tail?
|
|
(list 'tail pos2-start pos2-end)
|
|
(list 'head pos2-start pos2-end)))
|
|
))))
|
|
|
|
(defun pm--span-at-point (head-matcher tail-matcher &optional pos)
|
|
"Basic span detector with head/tail.
|
|
|
|
HEAD-MATCHER and TAIL-MATCHER can be regexp or functions
|
|
returning (cons beg end) and accepting one argument AHEAD that
|
|
can be either 1 or -1 for either forward or backward search.
|
|
|
|
Return (type span-start span-end) where type is one of the
|
|
follwoing symbols:
|
|
|
|
nil - pos is between (tail-reg or point-min) and (head-reg or point-max)
|
|
body - pos is between head-reg and (tail-reg or point-max)
|
|
head - head span
|
|
tail - tail span"
|
|
;; ! start of the span is part of the span !
|
|
(save-restriction
|
|
(widen)
|
|
(goto-char (or pos (point)))
|
|
(cond ((and (stringp head-matcher)
|
|
(stringp tail-matcher))
|
|
(pm--span-at-point-reg-reg head-matcher tail-matcher))
|
|
((and (stringp head-matcher)
|
|
(functionp tail-matcher))
|
|
(pm--span-at-point-fun-fun
|
|
(lambda (ahead) (pm--default-matcher head-matcher ahead))
|
|
tail-matcher))
|
|
((and (functionp head-matcher)
|
|
(stringp tail-matcher))
|
|
(pm--span-at-point-fun-fun
|
|
head-matcher
|
|
(lambda (ahead) (pm--default-matcher tail-matcher ahead))))
|
|
((and (functionp head-matcher)
|
|
(functionp tail-matcher))
|
|
(pm--span-at-point-fun-fun head-matcher tail-matcher))
|
|
(t (error "head and tail matchers should be either regexp strings or functions")))))
|
|
|
|
|
|
|
|
;;; INDENT
|
|
(defgeneric pm-indent-line (&optional chunkmode span)
|
|
"Indent current line.
|
|
Protect and call original indentation function associated with
|
|
the chunkmode.")
|
|
|
|
(defun pm--indent-line (span)
|
|
;; istr is auto-indent string
|
|
(unwind-protect
|
|
(save-restriction
|
|
(pm--comment-region 1 (nth 1 span))
|
|
(pm/narrow-to-span span)
|
|
(funcall pm--indent-line-function-original))
|
|
(pm--uncomment-region 1 (nth 1 span))))
|
|
|
|
(defmethod pm-indent-line ()
|
|
"Indent line dispatcher"
|
|
(let ((span (pm/get-innermost-span)))
|
|
(pm-indent-line (car (last span)) span)))
|
|
|
|
(defmethod pm-indent-line ((chunkmode pm-chunkmode) &optional span)
|
|
(pm--indent-line span))
|
|
|
|
(defmethod pm-indent-line ((chunkmode pm-hbtchunkmode) &optional span)
|
|
"Indent line in inner chunkmodes.
|
|
When point is at the beginning of head or tail, use parent chunk
|
|
to indent."
|
|
;; sloppy work:
|
|
;; Assumes multiline chunks and single-line head/tail.
|
|
;; Assumes current buffer is the correct buffer.
|
|
(let ((pos (point))
|
|
shift delta)
|
|
(cond ((or (eq 'head (car span))
|
|
(eq 'tail (car span)))
|
|
;; use parent's indentation function in head and tail
|
|
(back-to-indentation)
|
|
(setq delta (- pos (point)))
|
|
(backward-char)
|
|
(let ((parent-span (pm/get-innermost-span)))
|
|
(pm-select-buffer (car (last parent-span)) parent-span)
|
|
(forward-char)
|
|
(pm--indent-line parent-span)
|
|
(when (eq 'tail (car span))
|
|
(setq shift (pm--get-head-shift parent-span))
|
|
(indent-to (+ shift (- (point) (point-at-bol))))))
|
|
(if (> delta 0)
|
|
(goto-char (+ (point) delta))))
|
|
(t
|
|
(setq shift (pm--get-head-shift span))
|
|
(pm--indent-line span)
|
|
(when (= (current-column) 0)
|
|
(setq shift (+ shift (oref chunkmode :indent-offset))))
|
|
(setq delta (- (point) (point-at-bol)))
|
|
(beginning-of-line)
|
|
(indent-to shift)
|
|
(goto-char (+ (point) delta))))))
|
|
|
|
;; fixme: This one is nowhere used?
|
|
(defmethod pm-indent-line ((chunkmode pm-polymode-multi-auto) &optional span)
|
|
(pm-select-buffer chunkmode span)
|
|
(pm-indent-line pm/chunkmode span))
|
|
|
|
(defun pm--get-head-shift (span)
|
|
(save-excursion
|
|
(goto-char (cadr span))
|
|
(back-to-indentation)
|
|
(- (point) (point-at-bol))))
|
|
|
|
|
|
|
|
;;; FACES
|
|
(defgeneric pm-get-adjust-face (chunkmode &optional type))
|
|
(defmethod pm-get-adjust-face ((chunkmode pm-chunkmode) &optional type)
|
|
(oref chunkmode :adjust-face))
|
|
(defmethod pm-get-adjust-face ((chunkmode pm-hbtchunkmode) &optional type)
|
|
(setq type (or type pm/type))
|
|
(cond ((eq type 'head)
|
|
(oref chunkmode :head-adjust-face))
|
|
((eq type 'tail)
|
|
(if (eq 'head (oref pm/chunkmode :tail-adjust-face))
|
|
(oref pm/chunkmode :head-adjust-face)
|
|
(oref pm/chunkmode :tail-adjust-face)))
|
|
(t (oref pm/chunkmode :adjust-face))))
|
|
|
|
(provide 'polymode-methods)
|