(eval-when-compile (require 'cl))
(defun easy-mmode-pretty-mode-name (mode &optional lighter)
"Turn the symbol MODE into a string intended for the user.
If provided, LIGHTER will be used to help choose capitalization by,
replacing its case-insensitive matches with the literal string in LIGHTER."
(let* ((case-fold-search t)
(name (concat (replace-regexp-in-string
"-Minor" " minor"
(capitalize (replace-regexp-in-string
"-mode\\'" "" (symbol-name mode))))
" mode")))
(if (not (stringp lighter)) name
(setq lighter (replace-regexp-in-string "\\`\\s-+\\|\\s-+\\'" ""
lighter))
(replace-regexp-in-string (regexp-quote lighter) lighter name t t))))
(defalias 'easy-mmode-define-minor-mode 'define-minor-mode)
(defmacro define-minor-mode (mode doc &optional init-value lighter keymap &rest body)
"Define a new minor mode MODE.
This function defines the associated control variable MODE, keymap MODE-map,
and toggle command MODE.
DOC is the documentation for the mode toggle command.
Optional INIT-VALUE is the initial value of the mode's variable.
Optional LIGHTER is displayed in the modeline when the mode is on.
Optional KEYMAP is the default (defvar) keymap bound to the mode keymap.
If it is a list, it is passed to `easy-mmode-define-keymap'
in order to build a valid keymap. It's generally better to use
a separate MODE-map variable than to use this argument.
The above three arguments can be skipped if keyword arguments are
used (see below).
BODY contains code to execute each time the mode is activated or deactivated.
It is executed after toggling the mode,
and before running the hook variable `mode-HOOK'.
Before the actual body code, you can write keyword arguments (alternating
keywords and values). These following keyword arguments are supported (other
keywords will be passed to `defcustom' if the minor mode is global):
:group GROUP Custom group name to use in all generated `defcustom' forms.
Defaults to MODE without the possible trailing \"-mode\".
Don't use this default group name unless you have written a
`defgroup' to define that group properly.
:global GLOBAL If non-nil specifies that the minor mode is not meant to be
buffer-local, so don't make the variable MODE buffer-local.
By default, the mode is buffer-local.
:init-value VAL Same as the INIT-VALUE argument.
:lighter SPEC Same as the LIGHTER argument.
:keymap MAP Same as the KEYMAP argument.
:require SYM Same as in `defcustom'.
For example, you could write
(define-minor-mode foo-mode \"If enabled, foo on you!\"
:lighter \" Foo\" :require 'foo :global t :group 'hassle :version \"27.5\"
...BODY CODE...)"
(declare (debug (&define name stringp
[&optional [¬ keywordp] sexp
&optional [¬ keywordp] sexp
&optional [¬ keywordp] sexp]
[&rest [keywordp sexp]]
def-body)))
(cond
((keywordp init-value)
(setq body (list* init-value lighter keymap body)
init-value nil lighter nil keymap nil))
((keywordp lighter)
(setq body (list* lighter keymap body) lighter nil keymap nil))
((keywordp keymap) (push keymap body) (setq keymap nil)))
(let* ((last-message (current-message))
(mode-name (symbol-name mode))
(pretty-name (easy-mmode-pretty-mode-name mode lighter))
(globalp nil)
(set nil)
(initialize nil)
(group nil)
(type nil)
(extra-args nil)
(extra-keywords nil)
(require t)
(hook (intern (concat mode-name "-hook")))
(hook-on (intern (concat mode-name "-on-hook")))
(hook-off (intern (concat mode-name "-off-hook")))
keyw keymap-sym)
(while (keywordp (setq keyw (car body)))
(setq body (cdr body))
(case keyw
(:init-value (setq init-value (pop body)))
(:lighter (setq lighter (pop body)))
(:global (setq globalp (pop body)))
(:extra-args (setq extra-args (pop body)))
(:set (setq set (list :set (pop body))))
(:initialize (setq initialize (list :initialize (pop body))))
(:group (setq group (nconc group (list :group (pop body)))))
(:type (setq type (list :type (pop body))))
(:require (setq require (pop body)))
(:keymap (setq keymap (pop body)))
(t (push keyw extra-keywords) (push (pop body) extra-keywords))))
(setq keymap-sym (if (and keymap (symbolp keymap)) keymap
(intern (concat mode-name "-map"))))
(unless set (setq set '(:set 'custom-set-minor-mode)))
(unless initialize
(setq initialize '(:initialize 'custom-initialize-default)))
(unless group
(setq group
`(:group ',(intern (replace-regexp-in-string
"-mode\\'" "" mode-name)))))
(unless type (setq type '(:type 'boolean)))
`(progn
,(if (not globalp)
`(progn
(defvar ,mode ,init-value ,(format "Non-nil if %s is enabled.
Use the command `%s' to change this variable." pretty-name mode))
(make-variable-buffer-local ',mode))
(let ((base-doc-string
(concat "Non-nil if %s is enabled.
See the command `%s' for a description of this minor mode."
(if body "
Setting this variable directly does not take effect;
either customize it (see the info node `Easy Customization')
or call the function `%s'."))))
`(defcustom ,mode ,init-value
,(format base-doc-string pretty-name mode mode)
,@set
,@initialize
,@group
,@type
,@(unless (eq require t) `(:require ,require))
,@(nreverse extra-keywords))))
(defun ,mode (&optional arg ,@extra-args)
,(or doc
(format (concat "Toggle %s on or off.
Interactively, with no prefix argument, toggle the mode.
With universal prefix ARG turn mode on.
With zero or negative ARG turn mode off.
\\{%s}") pretty-name keymap-sym))
(interactive (list (or current-prefix-arg 'toggle)))
(setq ,mode
(cond
((eq arg 'toggle) (not ,mode))
(arg (> (prefix-numeric-value arg) 0))
(t
(if (null ,mode) t
(message
"Toggling %s off; better pass an explicit argument."
',mode)
nil))))
,@body
(run-hooks ',hook (if ,mode ',hook-on ',hook-off))
(if (called-interactively-p)
(progn
,(if globalp `(customize-mark-as-set ',mode))
(unless ,(and (current-message)
(not (equal last-message (current-message))))
(message ,(format "%s %%sabled" pretty-name)
(if ,mode "en" "dis")))))
(force-mode-line-update)
,mode)
:autoload-end
,(unless (symbolp keymap) `(defvar ,keymap-sym
(let ((m ,keymap))
(cond ((keymapp m) m)
((listp m) (easy-mmode-define-keymap m))
(t (error "Invalid keymap %S" ,keymap))))
,(format "Keymap for `%s'." mode-name)))
(add-minor-mode ',mode ',lighter
,(if keymap keymap-sym
`(if (boundp ',keymap-sym)
(symbol-value ',keymap-sym)))))))
(defalias 'easy-mmode-define-global-mode 'define-globalized-minor-mode)
(defalias 'define-global-minor-mode 'define-globalized-minor-mode)
(defmacro define-globalized-minor-mode (global-mode mode turn-on &rest keys)
"Make a global mode GLOBAL-MODE corresponding to buffer-local minor MODE.
TURN-ON is a function that will be called with no args in every buffer
and that should try to turn MODE on if applicable for that buffer.
KEYS is a list of CL-style keyword arguments. As the minor mode
defined by this function is always global, any :global keyword is
ignored. Other keywords have the same meaning as in `define-minor-mode',
which see. In particular, :group specifies the custom group.
The most useful keywords are those that are passed on to the
`defcustom'. It normally makes no sense to pass the :lighter
or :keymap keywords to `define-globalized-minor-mode', since these
are usually passed to the buffer-local version of the minor mode.
If MODE's set-up depends on the major mode in effect when it was
enabled, then disabling and reenabling MODE should make MODE work
correctly with the current major mode. This is important to
prevent problems with derived modes, that is, major modes that
call another major mode in their body."
(let* ((global-mode-name (symbol-name global-mode))
(pretty-name (easy-mmode-pretty-mode-name mode))
(pretty-global-name (easy-mmode-pretty-mode-name global-mode))
(group nil)
(extra-keywords nil)
(MODE-buffers (intern (concat global-mode-name "-buffers")))
(MODE-enable-in-buffers
(intern (concat global-mode-name "-enable-in-buffers")))
(MODE-check-buffers
(intern (concat global-mode-name "-check-buffers")))
(MODE-cmhh (intern (concat global-mode-name "-cmhh")))
(MODE-major-mode (intern (concat (symbol-name mode) "-major-mode")))
keyw)
(while (keywordp (setq keyw (car keys)))
(setq keys (cdr keys))
(case keyw
(:group (setq group (nconc group (list :group (pop keys)))))
(:global (setq keys (cdr keys)))
(t (push keyw extra-keywords) (push (pop keys) extra-keywords))))
(unless group
(setq group
`(:group ',(intern (replace-regexp-in-string
"-mode\\'" "" (symbol-name mode))))))
`(progn
(defvar ,MODE-major-mode nil)
(make-variable-buffer-local ',MODE-major-mode)
(define-minor-mode ,global-mode
,(format "Toggle %s in every possible buffer.
With prefix ARG, turn %s on if and only if ARG is positive.
%s is enabled in all buffers where `%s' would do it.
See `%s' for more information on %s."
pretty-name pretty-global-name pretty-name turn-on
mode pretty-name)
:global t ,@group ,@(nreverse extra-keywords)
(if ,global-mode
(progn
(add-hook 'after-change-major-mode-hook
',MODE-enable-in-buffers)
(add-hook 'find-file-hook ',MODE-check-buffers)
(add-hook 'change-major-mode-hook ',MODE-cmhh))
(remove-hook 'after-change-major-mode-hook ',MODE-enable-in-buffers)
(remove-hook 'find-file-hook ',MODE-check-buffers)
(remove-hook 'change-major-mode-hook ',MODE-cmhh))
(dolist (buf (buffer-list))
(with-current-buffer buf
(if ,global-mode (,turn-on) (when ,mode (,mode -1))))))
:autoload-end
(defvar ,MODE-buffers nil)
(defun ,MODE-enable-in-buffers ()
(dolist (buf ,MODE-buffers)
(when (buffer-live-p buf)
(with-current-buffer buf
(if ,mode
(unless (eq ,MODE-major-mode major-mode)
(,mode -1)
(,turn-on)
(setq ,MODE-major-mode major-mode))
(,turn-on)
(setq ,MODE-major-mode major-mode))))))
(put ',MODE-enable-in-buffers 'definition-name ',global-mode)
(defun ,MODE-check-buffers ()
(,MODE-enable-in-buffers)
(setq ,MODE-buffers nil)
(remove-hook 'post-command-hook ',MODE-check-buffers))
(put ',MODE-check-buffers 'definition-name ',global-mode)
(defun ,MODE-cmhh ()
(add-to-list ',MODE-buffers (current-buffer))
(add-hook 'post-command-hook ',MODE-check-buffers))
(put ',MODE-cmhh 'definition-name ',global-mode))))
(if (fboundp 'set-keymap-parents)
(defalias 'easy-mmode-set-keymap-parents 'set-keymap-parents)
(defun easy-mmode-set-keymap-parents (m parents)
(set-keymap-parent
m
(cond
((not (consp parents)) parents)
((not (cdr parents)) (car parents))
(t (let ((m (copy-keymap (pop parents))))
(easy-mmode-set-keymap-parents m parents)
m))))))
(defun easy-mmode-define-keymap (bs &optional name m args)
"Return a keymap built from bindings BS.
BS must be a list of (KEY . BINDING) where
KEY and BINDINGS are suitable for `define-key'.
Optional NAME is passed to `make-sparse-keymap'.
Optional map M can be used to modify an existing map.
ARGS is a list of additional keyword arguments."
(let (inherit dense)
(while args
(let ((key (pop args))
(val (pop args)))
(case key
(:name (setq name val))
(:dense (setq dense val))
(:inherit (setq inherit val))
(:group)
(t (message "Unknown argument %s in defmap" key)))))
(unless (keymapp m)
(setq bs (append m bs))
(setq m (if dense (make-keymap name) (make-sparse-keymap name))))
(dolist (b bs)
(let ((keys (car b))
(binding (cdr b)))
(dolist (key (if (consp keys) keys (list keys)))
(cond
((symbolp key)
(substitute-key-definition key binding m global-map))
((null binding)
(unless (keymapp (lookup-key m key)) (define-key m key binding)))
((let ((o (lookup-key m key)))
(or (null o) (numberp o) (eq o 'undefined)))
(define-key m key binding))))))
(cond
((keymapp inherit) (set-keymap-parent m inherit))
((consp inherit) (easy-mmode-set-keymap-parents m inherit)))
m))
(defmacro easy-mmode-defmap (m bs doc &rest args)
`(defconst ,m
(easy-mmode-define-keymap ,bs nil (if (boundp ',m) ,m) ,(cons 'list args))
,doc))
(defun easy-mmode-define-syntax (css args)
(let ((st (make-syntax-table (plist-get args :copy)))
(parent (plist-get args :inherit)))
(dolist (cs css)
(let ((char (car cs))
(syntax (cdr cs)))
(if (sequencep char)
(mapcar (lambda (c) (modify-syntax-entry c syntax st)) char)
(modify-syntax-entry char syntax st))))
(if parent (set-char-table-parent
st (if (symbolp parent) (symbol-value parent) parent)))
st))
(defmacro easy-mmode-defsyntax (st css doc &rest args)
"Define variable ST as a syntax-table.
CSS contains a list of syntax specifications of the form (CHAR . SYNTAX)."
`(progn
(autoload 'easy-mmode-define-syntax "easy-mmode")
(defconst ,st (easy-mmode-define-syntax ,css ,(cons 'list args)) ,doc)))
(defmacro easy-mmode-define-navigation (base re &optional name endfun narrowfun)
"Define BASE-next and BASE-prev to navigate in the buffer.
RE determines the places the commands should move point to.
NAME should describe the entities matched by RE. It is used to build
the docstrings of the two functions.
BASE-next also tries to make sure that the whole entry is visible by
searching for its end (by calling ENDFUN if provided or by looking for
the next entry) and recentering if necessary.
ENDFUN should return the end position (with or without moving point).
NARROWFUN non-nil means to check for narrowing before moving, and if
found, do widen first and then call NARROWFUN with no args after moving."
(let* ((base-name (symbol-name base))
(prev-sym (intern (concat base-name "-prev")))
(next-sym (intern (concat base-name "-next")))
(check-narrow-maybe
(when narrowfun
'(setq was-narrowed
(prog1 (or (< (- (point-max) (point-min)) (buffer-size)))
(widen)))))
(re-narrow-maybe (when narrowfun
`(when was-narrowed (,narrowfun)))))
(unless name (setq name base-name))
`(progn
(add-to-list 'debug-ignored-errors
,(concat "^No \\(previous\\|next\\) " (regexp-quote name)))
(defun ,next-sym (&optional count)
,(format "Go to the next COUNT'th %s." name)
(interactive "p")
(unless count (setq count 1))
(if (< count 0) (,prev-sym (- count))
(if (looking-at ,re) (setq count (1+ count)))
(let (was-narrowed)
,check-narrow-maybe
(if (not (re-search-forward ,re nil t count))
(if (looking-at ,re)
(goto-char (or ,(if endfun `(,endfun)) (point-max)))
(error "No next %s" ,name))
(goto-char (match-beginning 0))
(when (and (eq (current-buffer) (window-buffer (selected-window)))
(interactive-p))
(let ((endpt (or (save-excursion
,(if endfun `(,endfun)
`(re-search-forward ,re nil t 2)))
(point-max))))
(unless (pos-visible-in-window-p endpt nil t)
(recenter '(0))))))
,re-narrow-maybe)))
(put ',next-sym 'definition-name ',base)
(defun ,prev-sym (&optional count)
,(format "Go to the previous COUNT'th %s" (or name base-name))
(interactive "p")
(unless count (setq count 1))
(if (< count 0) (,next-sym (- count))
(let (was-narrowed)
,check-narrow-maybe
(unless (re-search-backward ,re nil t count)
(error "No previous %s" ,name))
,re-narrow-maybe)))
(put ',prev-sym 'definition-name ',base))))
(provide 'easy-mmode)