;;; yasnippet.el --- Yet another snippet extension for Emacs.
-;; Copyright (C) 2008-2012 Free Software Foundation, Inc.
+;; Copyright (C) 2008-2013 Free Software Foundation, Inc.
;; Authors: pluskid <pluskid@gmail.com>, João Távora <joaotavora@gmail.com>
-;; Version: 0.8.0
+;; Maintainer: João Távora <joaotavora@gmail.com>
+;; Version: 0.8.1
;; Package-version: 0.8.0
;; X-URL: http://github.com/capitaomorte/yasnippet
;; Keywords: convenience, emulation
;; The deprecated `yas/root-directory' aliases this variable
;; for backward-compatibility.
;;
-;; `yas-extra-modes'
-;;
-;; A local variable that you can set in a hook to override
-;; snippet-lookup based on major mode. It is a symbol (or
-;; list of symbols) that correspond to subdirectories of
-;; `yas-snippet-dirs' and is used for deciding which
-;; snippets to consider for the active buffer.
-;;
-;; Deprecated `yas/mode-symbol' aliases this variable for
-;; backward-compatibility.
;;
;; Major commands are:
;;
;;
;; Prompts you for a directory hierarchy of snippets to load.
;;
+;; M-x yas-activate-extra-mode
+;;
+;; Prompts you for an extra mode to add snippets for in the
+;; current buffer.
+;;
;; M-x yas-insert-snippet
;;
;; Prompts you for possible snippet expansion if that is
;; are to be displayed, or all the tables for all major
;; modes.
;;
-;; The `dropdown-list.el' extension is bundled with YASnippet, you
-;; can optionally use it the preferred "prompting method", putting in
-;; your .emacs file, for example:
+;; If you have `dropdown-list' installed, you can optionally use it
+;; as the preferred "prompting method", putting in your .emacs file,
+;; for example:
;;
;; (require 'dropdown-list)
;; (setq yas-prompt-functions '(yas-dropdown-prompt
;;; Code:
(require 'cl)
+(eval-and-compile
+ (require 'cl-lib))
(require 'easymenu)
(require 'help-mode)
-(require 'assoc)
-
-(eval-when-compile
- (defvar yas--editing-template)
- (defvar yas--guessed-modes)
- (defvar yas--indent-original-column)
- (defvar yas--scheduled-jit-loads)
- (defvar yas-keymap)
- (defvar yas-selected-text)
- (defvar yas-verbosity))
-
-;; Future-proof against obsoleting flet, see github #324
-;;
-(eval-and-compile
- (unless (fboundp 'cl-flet)
- (defalias 'cl-flet 'flet)
- (put 'cl-flet 'lisp-indent-function 1)
- (put 'cl-flet 'edebug-form-spec '((&rest (defun*)) cl-declarations body))))
+
+(defvar yas--editing-template)
+(defvar yas--guessed-modes)
+(defvar yas--indent-original-column)
+(defvar yas--scheduled-jit-loads)
+(defvar yas-keymap)
+(defvar yas-selected-text)
+(defvar yas-verbosity)
+(defvar yas--current-template)
\f
;;; User customizable variables
(yas-reload-all)))))
(defun yas-snippet-dirs ()
- "Returns `yas-snippet-dirs' (which see) as a list."
+ "Return `yas-snippet-dirs' (which see) as a list."
(if (listp yas-snippet-dirs) yas-snippet-dirs (list yas-snippet-dirs)))
(defvaralias 'yas/root-directory 'yas-snippet-dirs)
+(defcustom yas-new-snippet-default "\
+# -*- mode: snippet; require-final-newline: nil -*-
+# name: $1
+# key: ${2:${1:$(yas--key-from-desc yas-text)}}${3:
+# binding: ${4:direct-keybinding}}
+# --
+$0"
+ "Default snippet to use when creating a new snippet.
+If nil, don't use any snippet."
+ :type 'string
+ :group 'yasnippet)
+
(defcustom yas-prompt-functions '(yas-x-prompt
yas-dropdown-prompt
yas-completing-prompt
under the menu \"Yasnippet\".
- If set to `abbreviate', only the current major-mode
-menu and the modes set in `yas-extra-modes' are listed.
+menu and the modes set in `yas--extra-modes' are listed.
- If set to `full', every submenu is listed
-- It set to nil, don't display a menu at all (this requires a
- `yas-reload-all' call if the menu is already visible).
+- If set to `nil', hide the menu.
Any other non-nil value, every submenu is listed."
:type '(choice (const :tag "Full" full)
(const :tag "No menu" nil))
:group 'yasnippet)
-(defcustom yas-trigger-symbol (if (eq window-system 'mac)
- (char-to-string ?\x21E5) ;; little ->| sign
+(defcustom yas-trigger-symbol (or (and (eq window-system 'mac)
+ (ignore-errors
+ (char-to-string ?\x21E5))) ;; little ->| sign
" =>")
"The text that will be used in menu to represent the trigger."
:type 'string
:group 'yasnippet)
\f
+;;; User-visible variables
+
(defvar yas-keymap (let ((map (make-sparse-keymap)))
(define-key map [(tab)] 'yas-next-field-or-maybe-expand)
(define-key map (kbd "TAB") 'yas-next-field-or-maybe-expand)
map)
"The active keymap while a snippet expansion is in progress.")
-(defvar yas-key-syntaxes (list "w" "w_" "w_." "w_.()" "^ ")
- "List of character syntaxes used to find a trigger key before point.
-The list is tried in the order while scanning characters
-backwards from point. For example, if the list is '(\"w\" \"w_\")
-first look for trigger keys which are composed exclusively of
-\"word\"-syntax characters, and then, if that fails, look for
-keys which are either of \"word\" or \"symbol\"
-syntax. Triggering after
+(defvar yas-key-syntaxes (list "w" "w_" "w_." "w_.()"
+ #'yas-try-key-from-whitespace)
+ "Syntaxes and functions to help look for trigger keys before point.
+
+Each element in this list specifies how to skip buffer positions
+backwards and look for the start of a trigger key.
+
+Each element can be either a string or a function receiving the
+original point as an argument. A string element is simply passed
+to `skip-syntax-backward' whereas a function element is called
+with no arguments and should also place point before the original
+position.
+
+The string between the resulting buffer position and the original
+point is matched against the trigger keys in the active snippet
+tables.
+
+If no expandable snippets are found, the next element is the list
+is tried, unless a function element returned the symbol `again',
+in which case it is called again from the previous position and
+may once more reposition point.
+
+For example, if `yas-key-syntaxes'' value is '(\"w\" \"w_\"),
+trigger keys composed exclusively of \"word\"-syntax characters
+are looked for first. Failing that, longer keys composed of
+\"word\" or \"symbol\" syntax are looked for. Therefore,
+triggering after
foo-bar
-will, according to the \"w\" element first try \"bar\". If that
-isn't a trigger key, \"foo-bar\" is tried, respecting a second
-\"w_\" element.")
+will, according to the \"w\" element first try \"barbaz\". If
+that isn't a trigger key, \"foo-barbaz\" is tried, respecting the
+second \"w_\" element. Notice that even if \"baz\" is a trigger
+key for an active snippet, it won't be expanded, unless a
+function is added to `yas-key-syntaxes' that eventually places
+point between \"bar\" and \"baz\".
+
+See also Info node `(elisp) Syntax Descriptors'.")
(defvar yas-after-exit-snippet-hook
'()
(defvar yas-buffer-local-condition
'(if (and (or (fourth (syntax-ppss))
(fifth (syntax-ppss)))
- (eq (symbol-function this-command) 'yas-expand-from-trigger-key))
+ this-command
+ (eq this-command 'yas-expand-from-trigger-key))
'(require-snippet-condition . force-in-comment)
t)
"Snippet expanding condition.
\f
;;; Internal variables
-(defvar yas--version "0.8.0 (beta)")
+(defvar yas--version "0.8.0beta")
(defvar yas--menu-table (make-hash-table)
"A hash table of MAJOR-MODE symbols to menu keymaps.")
(defvar yas--minor-mode-menu nil
"Holds the YASnippet menu.")
-(defun yas--init-minor-keymap ()
- "Set up the `yas-minor-mode' keymap."
+(defvar yas-minor-mode-map
(let ((map (make-sparse-keymap)))
- (when yas-use-menu
- (easy-menu-define yas--minor-mode-menu
- map
- "Menu used when `yas-minor-mode' is active."
- '("YASnippet"
- "----"
- ["Expand trigger" yas-expand
- :help "Possibly expand tab trigger before point"]
- ["Insert at point..." yas-insert-snippet
- :help "Prompt for an expandable snippet and expand it at point"]
- ["New snippet..." yas-new-snippet
- :help "Create a new snippet in an appropriate directory"]
- ["Visit snippet file..." yas-visit-snippet-file
- :help "Prompt for an expandable snippet and find its file"]
- "----"
- ("Snippet menu behaviour"
- ["Visit snippets" (setq yas-visit-from-menu t)
- :help "Visit snippets from the menu"
- :active t :style radio :selected yas-visit-from-menu]
- ["Expand snippets" (setq yas-visit-from-menu nil)
- :help "Expand snippets from the menu"
- :active t :style radio :selected (not yas-visit-from-menu)]
- "----"
- ["Show all known modes" (setq yas-use-menu 'full)
- :help "Show one snippet submenu for each loaded table"
- :active t :style radio :selected (eq yas-use-menu 'full)]
- ["Abbreviate according to current mode" (setq yas-use-menu 'abbreviate)
- :help "Show only snippet submenus for the current active modes"
- :active t :style radio :selected (eq yas-use-menu 'abbreviate)])
- ("Indenting"
- ["Auto" (setq yas-indent-line 'auto)
- :help "Indent each line of the snippet with `indent-according-to-mode'"
- :active t :style radio :selected (eq yas-indent-line 'auto)]
- ["Fixed" (setq yas-indent-line 'fixed)
- :help "Indent the snippet to the current column"
- :active t :style radio :selected (eq yas-indent-line 'fixed)]
- ["None" (setq yas-indent-line 'none)
- :help "Don't apply any particular snippet indentation after expansion"
- :active t :style radio :selected (not (member yas-indent-line '(fixed auto)))]
- "----"
- ["Also auto indent first line" (setq yas-also-auto-indent-first-line
- (not yas-also-auto-indent-first-line))
- :help "When auto-indenting also, auto indent the first line menu"
- :active (eq yas-indent-line 'auto)
- :style toggle :selected yas-also-auto-indent-first-line]
- )
- ("Prompting method"
- ["System X-widget" (setq yas-prompt-functions
- (cons 'yas-x-prompt
- (remove 'yas-x-prompt
- yas-prompt-functions)))
- :help "Use your windowing system's (gtk, mac, windows, etc...) default menu"
- :active t :style radio :selected (eq (car yas-prompt-functions)
- 'yas-x-prompt)]
- ["Dropdown-list" (setq yas-prompt-functions
- (cons 'yas-dropdown-prompt
- (remove 'yas-dropdown-prompt
- yas-prompt-functions)))
- :help "Use a special dropdown list"
- :active t :style radio :selected (eq (car yas-prompt-functions)
- 'yas-dropdown-prompt)]
- ["Ido" (setq yas-prompt-functions
- (cons 'yas-ido-prompt
- (remove 'yas-ido-prompt
- yas-prompt-functions)))
- :help "Use an ido-style minibuffer prompt"
- :active t :style radio :selected (eq (car yas-prompt-functions)
- 'yas-ido-prompt)]
- ["Completing read" (setq yas-prompt-functions
- (cons 'yas-completing-prompt
- (remove 'yas-completing-prompt
- yas-prompt-functions)))
- :help "Use a normal minibuffer prompt"
- :active t :style radio :selected (eq (car yas-prompt-functions)
- 'yas-completing-prompt)]
- )
- ("Misc"
- ["Wrap region in exit marker"
- (setq yas-wrap-around-region
- (not yas-wrap-around-region))
- :help "If non-nil automatically wrap the selected text in the $0 snippet exit"
- :style toggle :selected yas-wrap-around-region]
- ["Allow stacked expansions "
- (setq yas-triggers-in-field
- (not yas-triggers-in-field))
- :help "If non-nil allow snippets to be triggered inside other snippet fields"
- :style toggle :selected yas-triggers-in-field]
- ["Revive snippets on undo "
- (setq yas-snippet-revival
- (not yas-snippet-revival))
- :help "If non-nil allow snippets to become active again after undo"
- :style toggle :selected yas-snippet-revival]
- ["Good grace "
- (setq yas-good-grace
- (not yas-good-grace))
- :help "If non-nil don't raise errors in bad embedded elisp in snippets"
- :style toggle :selected yas-good-grace]
- )
- "----"
- ["Load snippets..." yas-load-directory
- :help "Load snippets from a specific directory"]
- ["Reload everything" yas-reload-all
- :help "Cleanup stuff, reload snippets, rebuild menus"]
- ["About" yas-about
- :help "Display some information about YASnippet"])))
-
- ;; Now for the stuff that has direct keybindings
- ;;
(define-key map [(tab)] 'yas-expand)
(define-key map (kbd "TAB") 'yas-expand)
(define-key map "\C-c&\C-s" 'yas-insert-snippet)
(define-key map "\C-c&\C-n" 'yas-new-snippet)
(define-key map "\C-c&\C-v" 'yas-visit-snippet-file)
- map))
-
-(defvar yas-minor-mode-map (yas--init-minor-keymap)
+ map)
"The keymap used when `yas-minor-mode' is active.")
+(easy-menu-define yas--minor-mode-menu
+ yas-minor-mode-map
+ "Menu used when `yas-minor-mode' is active."
+ '("YASnippet" :visible yas-use-menu
+ "----"
+ ["Expand trigger" yas-expand
+ :help "Possibly expand tab trigger before point"]
+ ["Insert at point..." yas-insert-snippet
+ :help "Prompt for an expandable snippet and expand it at point"]
+ ["New snippet..." yas-new-snippet
+ :help "Create a new snippet in an appropriate directory"]
+ ["Visit snippet file..." yas-visit-snippet-file
+ :help "Prompt for an expandable snippet and find its file"]
+ "----"
+ ("Snippet menu behaviour"
+ ["Visit snippets" (setq yas-visit-from-menu t)
+ :help "Visit snippets from the menu"
+ :active t :style radio :selected yas-visit-from-menu]
+ ["Expand snippets" (setq yas-visit-from-menu nil)
+ :help "Expand snippets from the menu"
+ :active t :style radio :selected (not yas-visit-from-menu)]
+ "----"
+ ["Show all known modes" (setq yas-use-menu 'full)
+ :help "Show one snippet submenu for each loaded table"
+ :active t :style radio :selected (eq yas-use-menu 'full)]
+ ["Abbreviate according to current mode" (setq yas-use-menu 'abbreviate)
+ :help "Show only snippet submenus for the current active modes"
+ :active t :style radio :selected (eq yas-use-menu 'abbreviate)])
+ ("Indenting"
+ ["Auto" (setq yas-indent-line 'auto)
+ :help "Indent each line of the snippet with `indent-according-to-mode'"
+ :active t :style radio :selected (eq yas-indent-line 'auto)]
+ ["Fixed" (setq yas-indent-line 'fixed)
+ :help "Indent the snippet to the current column"
+ :active t :style radio :selected (eq yas-indent-line 'fixed)]
+ ["None" (setq yas-indent-line 'none)
+ :help "Don't apply any particular snippet indentation after expansion"
+ :active t :style radio :selected (not (member yas-indent-line '(fixed auto)))]
+ "----"
+ ["Also auto indent first line" (setq yas-also-auto-indent-first-line
+ (not yas-also-auto-indent-first-line))
+ :help "When auto-indenting also, auto indent the first line menu"
+ :active (eq yas-indent-line 'auto)
+ :style toggle :selected yas-also-auto-indent-first-line]
+ )
+ ("Prompting method"
+ ["System X-widget" (setq yas-prompt-functions
+ (cons 'yas-x-prompt
+ (remove 'yas-x-prompt
+ yas-prompt-functions)))
+ :help "Use your windowing system's (gtk, mac, windows, etc...) default menu"
+ :active t :style radio :selected (eq (car yas-prompt-functions)
+ 'yas-x-prompt)]
+ ["Dropdown-list" (setq yas-prompt-functions
+ (cons 'yas-dropdown-prompt
+ (remove 'yas-dropdown-prompt
+ yas-prompt-functions)))
+ :help "Use a special dropdown list"
+ :active t :style radio :selected (eq (car yas-prompt-functions)
+ 'yas-dropdown-prompt)]
+ ["Ido" (setq yas-prompt-functions
+ (cons 'yas-ido-prompt
+ (remove 'yas-ido-prompt
+ yas-prompt-functions)))
+ :help "Use an ido-style minibuffer prompt"
+ :active t :style radio :selected (eq (car yas-prompt-functions)
+ 'yas-ido-prompt)]
+ ["Completing read" (setq yas-prompt-functions
+ (cons 'yas-completing-prompt
+ (remove 'yas-completing-prompt
+ yas-prompt-functions)))
+ :help "Use a normal minibuffer prompt"
+ :active t :style radio :selected (eq (car yas-prompt-functions)
+ 'yas-completing-prompt)]
+ )
+ ("Misc"
+ ["Wrap region in exit marker"
+ (setq yas-wrap-around-region
+ (not yas-wrap-around-region))
+ :help "If non-nil automatically wrap the selected text in the $0 snippet exit"
+ :style toggle :selected yas-wrap-around-region]
+ ["Allow stacked expansions "
+ (setq yas-triggers-in-field
+ (not yas-triggers-in-field))
+ :help "If non-nil allow snippets to be triggered inside other snippet fields"
+ :style toggle :selected yas-triggers-in-field]
+ ["Revive snippets on undo "
+ (setq yas-snippet-revival
+ (not yas-snippet-revival))
+ :help "If non-nil allow snippets to become active again after undo"
+ :style toggle :selected yas-snippet-revival]
+ ["Good grace "
+ (setq yas-good-grace
+ (not yas-good-grace))
+ :help "If non-nil don't raise errors in bad embedded elisp in snippets"
+ :style toggle :selected yas-good-grace]
+ )
+ "----"
+ ["Load snippets..." yas-load-directory
+ :help "Load snippets from a specific directory"]
+ ["Reload everything" yas-reload-all
+ :help "Cleanup stuff, reload snippets, rebuild menus"]
+ ["About" yas-about
+ :help "Display some information about YASnippet"]))
+
+(defvar yas--extra-modes nil
+ "An internal list of modes for which to also lookup snippets.
+
+This variable probably makes more sense as buffer-local, so
+ensure your use `make-local-variable' when you set it.")
+(define-obsolete-variable-alias 'yas-extra-modes 'yas--extra-modes "0.8.1")
+
(defvar yas--tables (make-hash-table)
"A hash table of mode symbols to `yas--table' objects.")
(defun yas--modes-to-activate ()
"Compute list of mode symbols that are active for `yas-expand'
and friends."
- (let ((modes-to-activate (list major-mode))
- (mode major-mode))
- (while (setq mode (get mode 'derived-mode-parent))
- (push mode modes-to-activate))
- (dolist (mode (yas-extra-modes))
- (push mode modes-to-activate))
- (remove-duplicates
- (append modes-to-activate
- (mapcan #'(lambda (mode)
- (yas--all-parents mode))
- modes-to-activate)))))
+ (let (dfs)
+ (setq dfs (lambda (mode &optional explored)
+ (push mode explored)
+ (cons mode
+ (loop for neighbour
+ in (cl-list* (get mode 'derived-mode-parent)
+ (ignore-errors (symbol-function mode))
+ (gethash mode yas--parents))
+ when (and neighbour
+ (not (memq neighbour explored))
+ (symbolp neighbour))
+ append (funcall dfs neighbour explored)))))
+ (remove-duplicates (append yas--extra-modes
+ (funcall dfs major-mode)))))
(defvar yas-minor-mode-hook nil
"Hook run when `yas-minor-mode' is turned on.")
(remove-hook 'post-command-hook 'yas--post-command-handler t)
(remove-hook 'emulation-mode-map-alists 'yas--direct-keymaps))))
+(defun yas-activate-extra-mode (mode)
+ "Activates the snippets for the given `mode' in the buffer.
+
+The function can be called in the hook of a minor mode to
+activate snippets associated with that mode."
+ (interactive
+ (let (modes
+ symbol)
+ (maphash (lambda (k _)
+ (setq modes (cons (list k) modes)))
+ yas--parents)
+ (setq symbol (completing-read
+ "Activate mode: " modes nil t))
+ (list
+ (when (not (string= "" symbol))
+ (intern symbol)))))
+ (when mode
+ (add-to-list (make-local-variable 'yas--extra-modes) mode)
+ (yas--load-pending-jits)))
+
+(defun yas-deactivate-extra-mode (mode)
+ "Deactivates the snippets for the given `mode' in the buffer."
+ (interactive
+ (list (intern
+ (completing-read
+ "Deactivate mode: " (mapcar #'list yas--extra-modes) nil t))))
+ (set (make-local-variable 'yas--extra-modes)
+ (remove mode
+ yas--extra-modes)))
+
(defvar yas-dont-activate '(minibufferp)
- "If non-nil don't let `yas-minor-mode-on' activate for this buffer.
+ "If non-nil don't let `yas-global-mode' affect some buffers.
-If a function, then its result is used.
+If a function of zero arguments, then its result is used.
If a list of functions, then all functions must return nil to
activate yas for this buffer.
-`yas-minor-mode-on' is usually called by `yas-global-mode' so
-this effectively lets you define exceptions to the \"global\"
-behaviour. Can also be a function of zero arguments.")
-(make-variable-buffer-local 'yas-dont-activate)
+In Emacsen <= 23, this variable is buffer-local. Because
+`yas-minor-mode-on' is called by `yas-global-mode' after
+executing the buffer's major mode hook, setting this variable
+there is an effective way to define exceptions to the \"global\"
+activation behaviour.
+
+In Emacsen > 23, only the global value is used. To define
+per-mode exceptions to the \"global\" activation behaviour, call
+`yas-minor-mode' with a negative argument directily in the major
+mode's hook.")
+(unless (> emacs-major-version 23)
+ (with-no-warnings
+ (make-variable-buffer-local 'yas-dont-activate)))
+
(defun yas-minor-mode-on ()
"Turn on YASnippet minor mode.
(add-hook 'yas-global-mode-hook 'yas--global-mode-reload-with-jit-maybe)
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Major mode stuff
-;;
+\f
+;;; Major mode stuff
+
(defvar yas--font-lock-keywords
(append '(("^#.*$" . font-lock-comment-face))
- lisp-font-lock-keywords
- lisp-font-lock-keywords-1
lisp-font-lock-keywords-2
'(("$\\([0-9]+\\)"
(0 font-lock-keyword-face)
("${\\([0-9]+\\):?"
(0 font-lock-keyword-face)
(1 font-lock-warning-face t))
- ("${" font-lock-keyword-face)
- ("$[0-9]+?" font-lock-preprocessor-face)
+ ("${" . font-lock-keyword-face)
+ ("$[0-9]+?" . font-lock-preprocessor-face)
("\\(\\$(\\)" 1 font-lock-preprocessor-face)
("}"
(0 font-lock-keyword-face)))))
-(defun yas--init-major-keymap ()
- "Setup YASnippet major-mode keymap."
+(defvar snippet-mode-map
(let ((map (make-sparse-keymap)))
(easy-menu-define nil
map
(when (third ent)
(define-key map (third ent) (second ent)))
(vector (first ent) (second ent) t))
- (list
- (list "Load this snippet" 'yas-load-snippet-buffer "\C-c\C-c")
- (list "Try out this snippet" 'yas-tryout-snippet "\C-c\C-t")))))
- map))
-
-(defvar snippet-mode-map
- (yas--init-major-keymap)
+ '(("Load this snippet" yas-load-snippet-buffer "\C-c\C-l")
+ ("Load and quit window" yas-load-snippet-buffer-and-close "\C-c\C-c")
+ ("Try out this snippet" yas-tryout-snippet "\C-c\C-t")))))
+ map)
"The keymap used when `snippet-mode' is active.")
(defun yas--populate-template (template &rest args)
"Helper function to populate TEMPLATE with properties."
- (let (p v)
- (while args
- (aset template
- (position (intern (substring (symbol-name (car args)) 1))
- (mapcar #'car (get 'yas--template 'cl-struct-slots)))
- (second args))
- (setq args (cddr args)))
- template))
+ (while args
+ (aset template
+ (position (intern (substring (symbol-name (car args)) 1))
+ (mapcar #'car (get 'yas--template 'cl-struct-slots)))
+ (second args))
+ (setq args (cddr args)))
+ template)
(defstruct (yas--table (:constructor yas--make-snippet-table (name)))
"A table to store snippets for a particular mode.
`yas--table-name'
A symbol name normally corresponding to a major mode, but can
- also be a pseudo major-mode to be referenced in
- `yas-extra-modes', for example.
+ also be a pseudo major-mode to be used in
+ `yas-activate-extra-mode', for example.
`yas--table-hash'
`yas--table-uuidhash'
A hash table mapping snippets uuid's to the same `yas--template'
- objects. A snippet uuid defaults to the snippet's name.
-"
+ objects. A snippet uuid defaults to the snippet's name."
name
(hash (make-hash-table :test 'equal))
(uuidhash (make-hash-table :test 'equal))
(let ((name (yas--template-name template))
(key (yas--template-key template))
(keybinding (yas--template-keybinding template))
- (menu-binding-pair (yas--template-menu-binding-pair-get-create template)))
+ (_menu-binding-pair (yas--template-menu-binding-pair-get-create template)))
(dolist (k (remove nil (list key keybinding)))
(puthash name
template
(yas--add-template table template)
;; Take care of the menu
;;
- (when yas-use-menu
- (yas--update-template-menu table template)))
+ (yas--update-template-menu table template))
(defun yas--update-template-menu (table template)
"Update every menu-related for TEMPLATE."
templates))))
(defun yas--require-template-specific-condition-p ()
- "Decides if this buffer requests/requires snippet-specific
+ "Decide if this buffer requests/requires snippet-specific
conditions to filter out potential expansions."
(if (eq 'always yas-buffer-local-condition)
'always
(cdr local-condition)))))))
(defun yas--template-can-expand-p (condition requirement)
- "Evaluates CONDITION and REQUIREMENT and returns a boolean."
+ "Evaluate CONDITION and REQUIREMENT and return a boolean."
(let* ((result (or (null condition)
(yas--eval-condition condition))))
(cond ((eq requirement t)
(t
(eq requirement result)))))
-(defun yas--all-parents (mode)
- "Returns a list of all parent modes of MODE."
- (let ((parents (gethash mode yas--parents)))
- (append parents
- (mapcan #'yas--all-parents parents))))
-
(defun yas--table-templates (table)
(when table
(let ((acc (list)))
- (maphash #'(lambda (key namehash)
+ (maphash #'(lambda (_key namehash)
(maphash #'(lambda (name template)
(push (cons name template) acc))
namehash))
(yas--table-hash table))
(yas--filter-templates-by-condition acc))))
-(defun yas--current-key ()
- "Get the key under current position. A key is used to find
-the template of a snippet in the current snippet-table."
- (let ((start (point))
- (end (point))
- (syntaxes yas-key-syntaxes)
- syntax
- done
- templates)
- (while (and (not done) syntaxes)
- (setq syntax (car syntaxes))
- (setq syntaxes (cdr syntaxes))
- (save-excursion
- (skip-syntax-backward syntax)
- (setq start (point)))
- (setq templates
- (mapcan #'(lambda (table)
- (yas--fetch table (buffer-substring-no-properties start end)))
- (yas--get-snippet-tables)))
- (if templates
- (setq done t)
- (setq start end)))
- (list templates
- start
- end)))
-
+(defun yas--templates-for-key-at-point ()
+ "Find `yas--template' objects for any trigger keys preceding point.
+Returns (TEMPLATES START END). This function respects
+`yas-key-syntaxes', which see."
+ (save-excursion
+ (let ((original (point))
+ (methods yas-key-syntaxes)
+ (templates)
+ (method))
+ (while (and methods
+ (not templates))
+ (unless (eq method (car methods))
+ ;; TRICKY: `eq'-ness test means we can only be here if
+ ;; `method' is a function that returned `again', and hence
+ ;; don't revert back to original position as per
+ ;; `yas-key-syntaxes'.
+ (goto-char original))
+ (setq method (car methods))
+ (cond ((stringp method)
+ (skip-syntax-backward method)
+ (setq methods (cdr methods)))
+ ((functionp method)
+ (unless (eq (funcall method original)
+ 'again)
+ (setq methods (cdr methods))))
+ (t
+ (error "[yas] invalid element in `yas-key-syntaxes'")))
+ (setq templates
+ (mapcan #'(lambda (table)
+ (yas--fetch table (buffer-substring-no-properties (point)
+ original)))
+ (yas--get-snippet-tables))))
+ (when templates
+ (list templates (point) original)))))
(defun yas--table-all-keys (table)
"Get trigger keys of all active snippets in TABLE."
(or (fboundp mode)
(find mode yas--known-modes)))
+(defun yas--handle-error (err)
+ "Handle error depending on value of `yas-good-grace'."
+ (let ((msg (yas--format "elisp error: %s" (error-message-string err))))
+ (if yas-good-grace msg
+ (error "%s" msg))))
+
(defun yas--eval-lisp (form)
"Evaluate FORM and convert the result to string."
(let ((retval (catch 'yas--exception
(let ((result (eval form)))
(when result
(format "%s" result))))))
- (error (if yas-good-grace
- (yas--format "elisp error! %s" (error-message-string err))
- (error (yas--format "elisp error: %s"
- (error-message-string err)))))))))
+ (error (yas--handle-error err))))))
(when (and (consp retval)
(eq 'yas--exception (car retval)))
(error (cdr retval)))
(defun yas--eval-lisp-no-saves (form)
(condition-case err
(eval form)
- (error (if yas-good-grace
- (yas--format "elisp error! %s" (error-message-string err))
- (error (yas--format "elisp error: %s"
- (error-message-string err)))))))
+ (error (message "%s" (yas--handle-error err)))))
(defun yas--read-lisp (string &optional nil-on-error)
"Read STRING as a elisp expression and return it.
keybinding (error-message-string err))
nil))))
-(defvar yas-extra-modes nil
- "If non-nil, also lookup snippets for this/these modes.
-
-Can be a symbol or a list of symbols.
-
-This variable probably makes more sense as buffer-local, so
-ensure your use `make-local-variable' when you set it.")
-(defun yas-extra-modes ()
- (if (listp yas-extra-modes) yas-extra-modes (list yas-extra-modes)))
-(defvaralias 'yas/mode-symbol 'yas-extra-modes)
-
(defun yas--table-get-create (mode)
"Get or create the snippet table corresponding to MODE."
(let ((table (gethash mode
Return a list of `yas--table' objects. The list of modes to
consider is returned by `yas--modes-to-activate'"
(remove nil
- (mapcar #'(lambda (mode-name)
- (gethash mode-name yas--tables))
+ (mapcar #'(lambda (name)
+ (gethash name yas--tables))
(yas--modes-to-activate))))
(defun yas--menu-keymap-get-create (mode &optional parents)
:visible (yas--show-menu-p ',mode)))
menu-keymap))
+
(defmacro yas--called-interactively-p (&optional kind)
"A backward-compatible version of `called-interactively-p'.
Optional KIND is as documented at `called-interactively-p'
in GNU Emacs 24.1 or higher."
- (if (eq 0 (cdr (subr-arity (symbol-function 'called-interactively-p))))
+ (if (string< emacs-version "24.1")
'(called-interactively-p)
`(called-interactively-p ,kind)))
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+\f
;;; Template-related and snippet loading functions
(defun yas--parse-template (&optional file)
(cdr where)
(yas--template-expand-env yas--current-template)))))))
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Popping up for keys and templates
-;;
-(defvar yas--x-pretty-prompt-templates nil
- "If non-nil, attempt to prompt for templates like TextMate.")
+(defun yas--key-from-desc (text)
+ "Return a yasnippet key from a description string TEXT."
+ (replace-regexp-in-string "\\(\\w+\\).*" "\\1" text))
+\f
+;;; Popping up for keys and templates
(defun yas--prompt-for-template (templates &optional prompt)
"Interactively choose a template from the list TEMPLATES.
(sort templates #'(lambda (t1 t2)
(< (length (yas--template-name t1))
(length (yas--template-name t2))))))
- (if yas--x-pretty-prompt-templates
- (yas--x-pretty-prompt-templates "Choose a snippet" templates)
- (some #'(lambda (fn)
- (funcall fn (or prompt "Choose a snippet: ")
- templates
- #'yas--template-name))
- yas-prompt-functions))))
+ (some #'(lambda (fn)
+ (funcall fn (or prompt "Choose a snippet: ")
+ templates
+ #'yas--template-name))
+ yas-prompt-functions)))
(defun yas--prompt-for-keys (keys &optional prompt)
"Interactively choose a template key from the list KEYS.
(defun yas-x-prompt (prompt choices &optional display-fn)
"Display choices in a x-window prompt."
- ;; FIXME: HACK: if we notice that one of the objects in choices is
- ;; actually a `yas--template', defer to `yas--x-prompt-pretty-templates'
- ;;
- ;; This would be better implemented by passing CHOICES as a
- ;; structured tree rather than a list. Modifications would go as far
- ;; up as `yas--all-templates' I think.
- ;;
(when (and window-system choices)
- (let ((chosen
- (let (menu d) ;; d for display
- (dolist (c choices)
- (setq d (or (and display-fn (funcall display-fn c))
- c))
- (cond ((stringp d)
- (push (cons (concat " " d) c) menu))
- ((listp d)
- (push (car d) menu))))
- (setq menu (list prompt (push "title" menu)))
- (x-popup-menu (if (fboundp 'posn-at-point)
- (let ((x-y (posn-x-y (posn-at-point (point)))))
- (list (list (+ (car x-y) 10)
- (+ (cdr x-y) 20))
- (selected-window)))
- t)
- menu))))
- (or chosen
- (keyboard-quit)))))
-
-(defun yas--x-pretty-prompt-templates (prompt templates)
- "Display TEMPLATES, grouping neatly by table name."
- (let ((organized (make-hash-table :test #'equal))
- menu
- more-than-one-table
- prefix)
- (dolist (tl templates)
- (puthash (yas--template-table tl)
- (cons tl
- (gethash (yas--template-table tl) organized))
- organized))
- (setq more-than-one-table (> (hash-table-count organized) 1))
- (setq prefix (if more-than-one-table
- " " ""))
- (if more-than-one-table
- (maphash #'(lambda (table templates)
- (push (yas--table-name table) menu)
- (dolist (tl templates)
- (push (cons (concat prefix (yas--template-name tl)) tl) menu))) organized)
- (setq menu (mapcar #'(lambda (tl) (cons (concat prefix (yas--template-name tl)) tl)) templates)))
-
- (setq menu (nreverse menu))
- (or (x-popup-menu (if (fboundp 'posn-at-point)
- (let ((x-y (posn-x-y (posn-at-point (point)))))
- (list (list (+ (car x-y) 10)
- (+ (cdr x-y) 20))
- (selected-window)))
- t)
- (list prompt (push "title" menu)))
- (keyboard-quit))))
+ (or
+ (x-popup-menu
+ (if (fboundp 'posn-at-point)
+ (let ((x-y (posn-x-y (posn-at-point (point)))))
+ (list (list (+ (car x-y) 10)
+ (+ (cdr x-y) 20))
+ (selected-window)))
+ t)
+ `(,prompt ("title"
+ ,@(mapcar* (lambda (c d) `(,(concat " " d) . ,c))
+ choices
+ (if display-fn (mapcar display-fn choices) choices)))))
+ (keyboard-quit))))
(defun yas-ido-prompt (prompt choices &optional display-fn)
(when (and (fboundp 'ido-completing-read)
ido-mode))
(yas-completing-prompt prompt choices display-fn #'ido-completing-read)))
-(eval-when-compile (require 'dropdown-list nil t))
-(defun yas-dropdown-prompt (prompt choices &optional display-fn)
- (when (featurep 'dropdown-list)
- (let (formatted-choices
- filtered-choices
- d
- n)
- (dolist (choice choices)
- (setq d (or (and display-fn (funcall display-fn choice))
- choice))
- (when (stringp d)
- (push d formatted-choices)
- (push choice filtered-choices)))
-
- (setq n (and formatted-choices (dropdown-list formatted-choices)))
- (if n
- (nth n filtered-choices)
+(defun yas-dropdown-prompt (_prompt choices &optional display-fn)
+ (when (fboundp 'dropdown-list)
+ (let* ((formatted-choices
+ (if display-fn (mapcar display-fn choices) choices))
+ (n (dropdown-list formatted-choices)))
+ (if n (nth n choices)
(keyboard-quit)))))
(defun yas-completing-prompt (prompt choices &optional display-fn completion-fn)
- (let (formatted-choices
- filtered-choices
+ (let* ((formatted-choices
+ (if display-fn (mapcar display-fn choices) choices))
+ (chosen (funcall (or completion-fn #'completing-read)
+ prompt formatted-choices
+ nil 'require-match nil nil)))
+ (if (eq choices formatted-choices)
chosen
- d
- (completion-fn (or completion-fn
- #'completing-read)))
- (dolist (choice choices)
- (setq d (or (and display-fn (funcall display-fn choice))
- choice))
- (when (stringp d)
- (push d formatted-choices)
- (push choice filtered-choices)))
- (setq chosen (and formatted-choices
- (funcall completion-fn prompt
- formatted-choices
- nil
- 'require-match
- nil
- nil)))
- (let ((position (or (and chosen
- (position chosen formatted-choices :test #'string=))
- 0)))
- (nth position filtered-choices))))
+ (nth (or (position chosen formatted-choices :test #'string=) 0)
+ choices))))
-(defun yas-no-prompt (prompt choices &optional display-fn)
+(defun yas-no-prompt (_prompt choices &optional _display-fn)
(first choices))
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Defining snippets
+\f
+;;; Defining snippets
+;; This consists of creating and registering `yas--template' objects in the
+;; correct tables.
;;
-(defun yas--define-parents (mode parents)
- "Add PARENTS to the list of MODE's parents."
- (puthash mode (remove-duplicates
- (append parents
- (gethash mode yas--parents)))
- yas--parents))
-(defun yas-define-snippets-1 (snippet snippet-table)
+(defvar yas--creating-compiled-snippets nil)
+
+(defun yas--define-snippets-1 (snippet snippet-table)
"Helper for `yas-define-snippets'."
;; X) Calculate some more defaults on the values returned by
;; `yas--parse-template'.
Within these, only KEY and TEMPLATE are actually mandatory.
-TEMPLATE might be a lisp form or a string, depending on whether
+TEMPLATE might be a Lisp form or a string, depending on whether
this is a snippet or a snippet-command.
-CONDITION, EXPAND-ENV and KEYBINDING are lisp forms, they have
+CONDITION, EXPAND-ENV and KEYBINDING are Lisp forms, they have
been `yas--read-lisp'-ed and will eventually be
`yas--eval-lisp'-ed.
FILE is probably of very little use if you're programatically
defining snippets.
-UUID is the snippets \"unique-id\". Loading a second snippet file
-with the same uuid replaced the previous snippet.
+UUID is the snippet's \"unique-id\". Loading a second snippet
+file with the same uuid would replace the previous snippet.
You can use `yas--parse-template' to return such lists based on
the current buffers contents."
- (let ((snippet-table (yas--table-get-create mode))
- (template nil))
- (dolist (snippet snippets)
- (setq template (yas-define-snippets-1 snippet
- snippet-table)))
- template))
+ (if yas--creating-compiled-snippets
+ (progn
+ (insert ";;; Snippet definitions:\n;;;\n")
+ (let ((literal-snippets (list))
+ (print-length nil))
+ (dolist (snippet snippets)
+ (let ((key (nth 0 snippet))
+ (template-content (nth 1 snippet))
+ (name (nth 2 snippet))
+ (condition (nth 3 snippet))
+ (group (nth 4 snippet))
+ (expand-env (nth 5 snippet))
+ (file nil) ;; omit on purpose
+ (binding (nth 7 snippet))
+ (uuid (nth 8 snippet)))
+ (push `(,key
+ ,template-content
+ ,name
+ ,condition
+ ,group
+ ,expand-env
+ ,file
+ ,binding
+ ,uuid)
+ literal-snippets)))
+ (insert (pp-to-string
+ `(yas-define-snippets ',mode ',literal-snippets)))
+ (insert "\n\n")))
+ ;; Normal case.
+ (let ((snippet-table (yas--table-get-create mode))
+ (template nil))
+ (dolist (snippet snippets)
+ (setq template (yas--define-snippets-1 snippet
+ snippet-table)))
+ template)))
+
+\f
+;;; Loading snippets from files
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Loading snippets from files
-;;
(defun yas--load-yas-setup-file (file)
- (load file 'noerror))
+ (if (not yas--creating-compiled-snippets)
+ ;; Normal case.
+ (load file 'noerror)
+ (let ((elfile (concat file ".el")))
+ (when (file-exists-p elfile)
+ (insert ";;; .yas-setup.el support file if any:\n;;;\n")
+ (insert-file-contents elfile)
+ (goto-char (point-max))))))
+
+(defun yas--define-parents (mode parents)
+ "Add PARENTS to the list of MODE's parents."
+ (puthash mode (remove-duplicates
+ (append parents
+ (gethash mode yas--parents)))
+ yas--parents))
-(defun yas-load-directory (top-level-dir &optional use-jit)
+(defun yas-load-directory (top-level-dir &optional use-jit interactive)
"Load snippets in directory hierarchy TOP-LEVEL-DIR.
Below TOP-LEVEL-DIR each directory should be a mode name.
-Optional USE-JIT use jit-loading of snippets."
- (interactive "DSelect the root directory: ")
+With prefix argument USE-JIT do jit-loading of snippets."
+ (interactive
+ (list (read-directory-name "Select the root directory: " nil nil t)
+ current-prefix-arg t))
(unless yas-snippet-dirs
(setq yas-snippet-dirs top-level-dir))
(dolist (dir (yas--subdirs top-level-dir))
;;
(yas--define-parents mode-sym parents)
(yas--menu-keymap-get-create mode-sym)
- (let ((form `(yas--load-directory-1 ,dir
- ',mode-sym
- ',parents)))
+ (let ((fun `(lambda () ;; FIXME: Simulating lexical-binding.
+ (yas--load-directory-1 ',dir ',mode-sym))))
(if (and use-jit
(not (some #'(lambda (buffer)
(with-current-buffer buffer
+ ;; FIXME: Shouldn't this use derived-mode-p?
(when (eq major-mode mode-sym)
(yas--message 3 "Discovered there was already %s in %s" buffer mode-sym)
t)))
(buffer-list))))
- (yas--schedule-jit mode-sym form)
- (eval form)))))
- (when (yas--called-interactively-p 'interactive)
+ (yas--schedule-jit mode-sym fun)
+ (funcall fun)))))
+ (when interactive
(yas--message 3 "Loaded snippets from %s." top-level-dir)))
-(defun yas--load-directory-1 (directory mode-sym parents &optional no-compiled-snippets)
+(defun yas--load-directory-1 (directory mode-sym)
"Recursively load snippet templates from DIRECTORY."
- (unless (file-exists-p (concat directory "/" ".yas-skip"))
- (if (and (not no-compiled-snippets)
- (progn (yas--message 2 "Loading compiled snippets from %s" directory) t)
- (load (expand-file-name ".yas-compiled-snippets" directory) 'noerror (<= yas-verbosity 3)))
- (yas--message 2 "Loading snippet files from %s" directory)
- (yas--load-directory-2 directory mode-sym))))
+ (if yas--creating-compiled-snippets
+ (let ((output-file (expand-file-name ".yas-compiled-snippets.el"
+ directory)))
+ (with-temp-file output-file
+ (insert (format ";;; Compiled snippets and support files for `%s'\n"
+ mode-sym))
+ (yas--load-directory-2 directory mode-sym)
+ (insert (format ";;; Do not edit! File generated at %s\n"
+ (current-time-string)))))
+ ;; Normal case.
+ (unless (file-exists-p (concat directory "/" ".yas-skip"))
+ (if (and (progn (yas--message 2 "Loading compiled snippets from %s" directory) t)
+ (load (expand-file-name ".yas-compiled-snippets" directory) 'noerror (<= yas-verbosity 3)))
+ (yas--message 2 "Loading snippet files from %s" directory)
+ (yas--load-directory-2 directory mode-sym)))))
(defun yas--load-directory-2 (directory mode-sym)
;; Load .yas-setup.el files wherever we find them
(call-interactively 'yas-load-directory))
errors))
-(defun yas-reload-all (&optional interactive)
+(defun yas-reload-all (&optional no-jit interactive)
"Reload all snippets and rebuild the YASnippet menu.
-When called interactively force immediate reload of all known
+When NO-JIT is non-nil force immediate reload of all known
snippets under `yas-snippet-dirs', otherwise use just-in-time
-loading."
- (interactive "p")
+loading.
+
+When called interactively, use just-in-time loading when given a
+prefix argument."
+ (interactive (list (not current-prefix-arg) t))
(catch 'abort
(let ((errors)
(snippet-editing-buffers
(throw 'abort nil))
;; in a non-interactive use, at least set
;; `yas--editing-template' to nil, make it guess it next time around
- (mapc #'(lambda (buffer) (setq yas--editing-template nil)) (buffer-list))))
+ (mapc #'(lambda (buffer)
+ (with-current-buffer buffer
+ (kill-local-variable 'yas--editing-template)))
+ (buffer-list))))
- ;; Empty all snippet tables, parenting info and all menu tables
+ ;; Empty all snippet tables and parenting info
;;
(setq yas--tables (make-hash-table))
(setq yas--parents (make-hash-table))
+
+ ;; Before killing `yas--menu-table' use its keys to cleanup the
+ ;; mode menu parts of `yas--minor-mode-menu' (thus also cleaning
+ ;; up `yas-minor-mode-map', which points to it)
+ ;;
+ (maphash #'(lambda (menu-symbol _keymap)
+ (define-key yas--minor-mode-menu (vector menu-symbol) nil))
+ yas--menu-table)
+ ;; Now empty `yas--menu-table' as well
(setq yas--menu-table (make-hash-table))
;; Cancel all pending 'yas--scheduled-jit-loads'
;;
(setq yas--scheduled-jit-loads (make-hash-table))
- ;; Init the `yas-minor-mode-map', taking care not to break the
- ;; menu....
- ;;
- (setcdr yas-minor-mode-map (cdr (yas--init-minor-keymap)))
-
;; Reload the directories listed in `yas-snippet-dirs' or prompt
;; the user to select one.
;;
- (setq errors (yas--load-snippet-dirs interactive))
+ (setq errors (yas--load-snippet-dirs no-jit))
;; Reload the direct keybindings
;;
(yas-direct-keymaps-reload)
+ (run-hooks 'yas-after-reload-hook)
(yas--message 3 "Reloaded everything%s...%s."
- (if interactive "" " (snippets will load just-in-time)")
+ (if no-jit "" " (snippets will load just-in-time)")
(if errors " (some errors, check *Messages*)" "")))))
+(defvar yas-after-reload-hook nil
+ "Hooks run after `yas-reload-all'.")
+
(defun yas--load-pending-jits ()
(dolist (mode (yas--modes-to-activate))
- (let ((forms (reverse (gethash mode yas--scheduled-jit-loads))))
+ (let ((funs (reverse (gethash mode yas--scheduled-jit-loads))))
;; must reverse to maintain coherence with `yas-snippet-dirs'
- (dolist (form forms)
- (yas--message 3 "Loading for `%s', just-in-time: %s!" mode form)
- (eval form))
+ (dolist (fun funs)
+ (yas--message 3 "Loading for `%s', just-in-time: %s!" mode fun)
+ (funcall fun))
(remhash mode yas--scheduled-jit-loads))))
;; (when (<= emacs-major-version 22)
string
t)
"\""))
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+\f
;;; Snippet compilation function
(defun yas--initialize ()
This works by stubbing a few functions, then calling
`yas-load-directory'."
(interactive "DTop level snippet directory?")
- (cl-flet ((yas--load-yas-setup-file
- (file)
- (let ((elfile (concat file ".el")))
- (when (file-exists-p elfile)
- (insert ";;; .yas-setup.el support file if any:\n;;;\n")
- (insert-file-contents elfile)
- (goto-char (point-max))
- )))
- (yas-define-snippets
- (mode snippets)
- (insert ";;; Snippet definitions:\n;;;\n")
- (let ((literal-snippets (list))
- (print-length nil))
- (dolist (snippet snippets)
- (let ((key (first snippet))
- (template-content (second snippet))
- (name (third snippet))
- (condition (fourth snippet))
- (group (fifth snippet))
- (expand-env (sixth snippet))
- (file nil) ;; (seventh snippet)) ;; omit on purpose
- (binding (eighth snippet))
- (uuid (ninth snippet)))
- (push `(,key
- ,template-content
- ,name
- ,condition
- ,group
- ,expand-env
- ,file
- ,binding
- ,uuid)
- literal-snippets)))
- (insert (pp-to-string `(yas-define-snippets ',mode ',literal-snippets)))
- (insert "\n\n")))
- (yas--load-directory-1
- (dir mode parents &rest ignore)
- (let ((output-file (concat (file-name-as-directory dir) ".yas-compiled-snippets.el")))
- (with-temp-file output-file
- (insert (format ";;; Compiled snippets and support files for `%s'\n" mode))
- (yas--load-directory-2 dir mode)
- (insert (format ";;; Do not edit! File generated at %s\n" (current-time-string)))))))
+ (let ((yas--creating-compiled-snippets t))
(yas-load-directory top-level-dir nil)))
(defun yas-recompile-all ()
(defvar yas--scheduled-jit-loads (make-hash-table)
"Alist of mode-symbols to forms to be evaled when `yas-minor-mode' kicks in.")
-(defun yas--schedule-jit (mode form)
- (puthash mode
- (cons form
- (gethash mode yas--scheduled-jit-loads))
- yas--scheduled-jit-loads))
+(defun yas--schedule-jit (mode fun)
+ (push fun (gethash mode yas--scheduled-jit-loads)))
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+\f
;;; Some user level functions
-;;;
(defun yas-about ()
(interactive)
TYPE may be `:stay', signaling this menu binding should be
static in the menu."
(or (yas--template-menu-binding-pair template)
- (let ((key (yas--template-key template))
- (keybinding (yas--template-keybinding template)))
+ (let (;; (key (yas--template-key template))
+ ;; (keybinding (yas--template-keybinding template))
+ )
(setf (yas--template-menu-binding-pair template)
(cons `(menu-item ,(or (yas--template-name template)
(yas--template-uuid template))
(mapcar #'(lambda (table)
(yas--table-mode table))
(yas--get-snippet-tables))))
- ((eq yas-use-menu 'full)
- t)
- ((eq yas-use-menu t)
- t)))
+ (yas-use-menu t)))
(defun yas--delete-from-keymap (keymap uuid)
"Recursively delete items with UUID from KEYMAP and its submenus."
list of groups of the snippets defined thereafter.
OMIT-ITEMS is a list of snippet uuid's that will always be
-omitted from MODE's menu, even if they're manually loaded.
-
-This function does nothing if `yas-use-menu' is nil."
- (when yas-use-menu
- (let* ((table (yas--table-get-create mode))
- (hash (yas--table-uuidhash table)))
- (yas--define-menu-1 table
- (yas--menu-keymap-get-create mode)
- menu
- hash)
- (dolist (uuid omit-items)
- (let ((template (or (gethash uuid hash)
- (yas--populate-template (puthash uuid
- (yas--make-blank-template)
- hash)
- :table table
- :uuid uuid))))
- (setf (yas--template-menu-binding-pair template) (cons nil :none)))))))
+omitted from MODE's menu, even if they're manually loaded."
+ (let* ((table (yas--table-get-create mode))
+ (hash (yas--table-uuidhash table)))
+ (yas--define-menu-1 table
+ (yas--menu-keymap-get-create mode)
+ menu
+ hash)
+ (dolist (uuid omit-items)
+ (let ((template (or (gethash uuid hash)
+ (yas--populate-template (puthash uuid
+ (yas--make-blank-template)
+ hash)
+ :table table
+ :uuid uuid))))
+ (setf (yas--template-menu-binding-pair template) (cons nil :none))))))
(defun yas--define-menu-1 (table menu-keymap menu uuidhash &optional group-list)
"Helper for `yas-define-menu'."
;;;
(defvar yas--condition-cache-timestamp nil)
(defmacro yas-define-condition-cache (func doc &rest body)
- "Define a function FUNC with doc DOC and body BODY, BODY is
-executed at most once every snippet expansion attempt, to check
+ "Define a function FUNC with doc DOC and body BODY.
+BODY is executed at most once every snippet expansion attempt, to check
expansion conditions.
It doesn't make any sense to call FUNC programatically."
(save-restriction
(narrow-to-region (yas--field-start field)
(yas--field-end field))
- (yas--current-key))
- (yas--current-key))))
- (if (and templates-and-pos
- (first templates-and-pos))
+ (yas--templates-for-key-at-point))
+ (yas--templates-for-key-at-point))))
+ (if templates-and-pos
(yas--expand-or-prompt-for-template (first templates-and-pos)
- (second templates-and-pos)
- (third templates-and-pos))
- (yas--fallback 'trigger-key))))
+ (second templates-and-pos)
+ (third templates-and-pos))
+ (yas--fallback))))
(defun yas-expand-from-keymap ()
"Directly expand some snippets, searching `yas--direct-keymaps'.
If expansion fails, execute the previous binding for this key"
(interactive)
(setq yas--condition-cache-timestamp (current-time))
- (let* ((yas--prefix current-prefix-arg)
- (vec (subseq (this-command-keys-vector) (if current-prefix-arg
- universal-argument-num-events
+ (let* ((vec (subseq (this-command-keys-vector) (if current-prefix-arg
+ (length (this-command-keys))
0)))
(templates (mapcan #'(lambda (table)
(yas--fetch table vec))
expand immediately. Common gateway for
`yas-expand-from-trigger-key' and `yas-expand-from-keymap'."
(let ((yas--current-template (or (and (rest templates) ;; more than one
- (yas--prompt-for-template (mapcar #'cdr templates)))
- (cdar templates))))
+ (yas--prompt-for-template (mapcar #'cdr templates)))
+ (cdar templates))))
(when yas--current-template
(yas-expand-snippet (yas--template-content yas--current-template)
start
;; returns `org-cycle'. However, most other modes bind "TAB". TODO,
;; improve this explanation.
;;
-(defun yas--fallback (&optional from-trigger-key-p)
+(defun yas--fallback ()
"Fallback after expansion has failed.
Common gateway for `yas-expand-from-trigger-key' and
(yas--message 4 "Falling back to %s" beyond-yasnippet)
(assert (or (null beyond-yasnippet) (commandp beyond-yasnippet)))
(setq this-original-command beyond-yasnippet)
- (call-interactively beyond-yasnippet)))
+ (when beyond-yasnippet
+ (call-interactively beyond-yasnippet))))
((and (listp yas-fallback-behavior)
(cdr yas-fallback-behavior)
(eq 'apply (car yas-fallback-behavior)))
nil)))
(defun yas--keybinding-beyond-yasnippet ()
- "Returns the "
+ "Return the ??"
(let* ((yas-minor-mode nil)
(yas--direct-keymaps nil)
(keys (this-single-command-keys)))
(defun yas--fallback-translate-input (keys)
"Emulate `read-key-sequence', at least what I think it does.
-Keys should be an untranslated key vector. Returns a translated
-vector of keys. FIXME not thoroughly tested"
+Keys should be an untranslated key vector. Returns a translated
+vector of keys. FIXME not thoroughly tested."
(let ((retval [])
(i 0))
(while (< i (length keys))
(while (and (< j (length keys))
translated
(keymapp translated))
- (setq translated (aget (remove 'keymap translated) (aref keys j))
+ (setq translated (cdr (assoc (aref keys j) (remove 'keymap translated)))
j (1+ j)))
(setq retval (vconcat retval (cond ((symbolp translated)
`[,translated])
(defun yas-insert-snippet (&optional no-condition)
"Choose a snippet to expand, pop-up a list of choices according
-to `yas--prompt-function'.
+to `yas-prompt-functions'.
With prefix argument NO-CONDITION, bypass filtering of snippets
by condition."
(set (make-local-variable 'yas--editing-template) template)))))
(defun yas--guess-snippet-directories-1 (table)
- "Guesses possible snippet subdirectories for TABLE."
+ "Guess possible snippet subdirectories for TABLE."
(cons (yas--table-name table)
(mapcan #'(lambda (parent)
(yas--guess-snippet-directories-1
tables)))
(defun yas--make-directory-maybe (table-and-dirs &optional main-table-string)
- "Returns a dir inside TABLE-AND-DIRS, prompts for creation if none exists."
+ "Return a dir inside TABLE-AND-DIRS, prompts for creation if none exists."
(or (some #'(lambda (dir) (when (file-directory-p dir) dir)) (cdr table-and-dirs))
(let ((candidate (first (cdr table-and-dirs))))
(unless (file-writable-p (file-name-directory candidate))
(set (make-local-variable 'yas--guessed-modes) (mapcar #'(lambda (d)
(yas--table-mode (car d)))
guessed-directories))
- (unless no-template (yas-expand-snippet "\
-# -*- mode: snippet -*-
-# name: $1
-# key: ${2:${1:$(replace-regexp-in-string \"\\\\\\\\(\\\\\\\\w+\\\\\\\\).*\" \"\\\\\\\\1\" yas-text)}}${3:
-# binding: ${4:direct-keybinding}}${5:
-# expand-env: ((${6:some-var} ${7:some-value}))}${8:
-# type: command}
-# --
-$0"))))
+ (if (and (not no-template) yas-new-snippet-default)
+ (yas-expand-snippet yas-new-snippet-default))))
(defun yas--compute-major-mode-and-parents (file)
"Given FILE, find the nearest snippet directory for a given mode.
(buffer-substring-no-properties (point-min)
(point-max))))))))
(when major-mode-sym
- (cons major-mode-sym parents))))
+ (cons major-mode-sym (remove major-mode-sym parents)))))
(defvar yas--editing-template nil
"Supporting variable for `yas-load-snippet-buffer' and `yas--visit-snippet'.")
TABLE is a symbol naming a passed to `yas--table-get-create'.
-When called interactively, prompt for the table name and
-whether (and where) to save the snippet, then quit the window."
+When called interactively, prompt for the table name."
(interactive (list (yas--read-table) t))
(cond
;; We have `yas--editing-template', this buffer's content comes from a
;; template which is already loaded and neatly positioned,...
;;
(yas--editing-template
- (yas-define-snippets-1 (yas--parse-template (yas--template-file yas--editing-template))
+ (yas--define-snippets-1 (yas--parse-template (yas--template-file yas--editing-template))
(yas--template-table yas--editing-template)))
;; Try to use `yas--guessed-modes'. If we don't have that use the
;; value from `yas--compute-major-mode-and-parents'
(set (make-local-variable 'yas--guessed-modes) (or (yas--compute-major-mode-and-parents buffer-file-name))))
(let* ((table (yas--table-get-create table)))
(set (make-local-variable 'yas--editing-template)
- (yas-define-snippets-1 (yas--parse-template buffer-file-name)
+ (yas--define-snippets-1 (yas--parse-template buffer-file-name)
table)))))
+ (when interactive
+ (yas--message 3 "Snippet \"%s\" loaded for %s."
+ (yas--template-name yas--editing-template)
+ (yas--table-name (yas--template-table yas--editing-template)))))
+
+(defun yas-load-snippet-buffer-and-close (table &optional kill)
+ "Load the snippet with `yas-load-snippet-buffer', possibly
+ save, then `quit-window' if saved.
- (when (and interactive
- (or
+If the snippet is new, ask the user whether (and where) to save
+it. If the snippet already has a file, just save it.
+
+The prefix argument KILL is passed to `quit-window'.
+
+Don't use this from a Lisp program, call `yas-load-snippet-buffer'
+and `kill-buffer' instead."
+ (interactive (list (yas--read-table) current-prefix-arg))
+ (yas-load-snippet-buffer table t)
+ (when (and (or
;; Only offer to save this if it looks like a library or new
;; snippet (loaded from elisp, from a dir in `yas-snippet-dirs'
;; which is not the first, or from an unwritable file)
(read-from-minibuffer (format "File name to create in %s? " chosen)
default-file-name)))
(setf (yas--template-file yas--editing-template) buffer-file-name)))))
- (when interactive
- (yas--message 3 "Snippet \"%s\" loaded for %s."
- (yas--template-name yas--editing-template)
- (yas--table-name (yas--template-table yas--editing-template)))
- (quit-window interactive)))
+ (when buffer-file-name
+ (save-buffer)
+ (quit-window kill)))
(defun yas-tryout-snippet (&optional debug)
"Test current buffer's snippet template in other buffer."
(defun yas-active-keys ()
"Return all active trigger keys for current buffer and point."
- (remove-duplicates (mapcan #'yas--table-all-keys (yas--get-snippet-tables))
- :test #'string=))
+ (remove-duplicates
+ (remove-if-not #'stringp (mapcan #'yas--table-all-keys (yas--get-snippet-tables)))
+ :test #'string=))
(defun yas--template-fine-group (template)
(car (last (or (yas--template-group template)
(buffer (get-buffer-create "*YASnippet tables*"))
(active-tables (yas--get-snippet-tables))
(remain-tables (let ((all))
- (maphash #'(lambda (k v)
+ (maphash #'(lambda (_k v)
(unless (find v active-tables)
(push v all)))
yas--tables)
(dolist (table (append active-tables remain-tables))
(insert (format "\nSnippet table `%s':\n\n" (yas--table-name table)))
(let ((keys))
- (maphash #'(lambda (k v)
+ (maphash #'(lambda (k _v)
(push k keys))
(yas--table-hash table))
(dolist (key keys)
(insert (format " key %s maps snippets: %s\n" key
(let ((names))
- (maphash #'(lambda (k v)
+ (maphash #'(lambda (k _v)
(push k names))
(gethash key (yas--table-hash table)))
names))))))))
(insert (make-string 100 ?-) "\n")
(insert "group state name key binding\n")
(let ((groups-hash (make-hash-table :test #'equal)))
- (maphash #'(lambda (k v)
+ (maphash #'(lambda (_k v)
(let ((group (or (yas--template-fine-group v)
"(top level)")))
(when (yas--template-name v)
groups-hash)))
+\f
+;;; User convenience functions, for using in `yas-key-syntaxes'
+
+(defun yas-try-key-from-whitespace (_start-point)
+ "As `yas-key-syntaxes' element, look for whitespace delimited key.
+
+A newline will be considered whitespace even if the mode syntax
+marks it as something else (typically comment ender)."
+ (skip-chars-backward "^[:space:]\n"))
+
+(defun yas-shortest-key-until-whitespace (_start-point)
+ "Like `yas-longest-key-from-whitespace' but take the shortest key."
+ (when (/= (skip-chars-backward "^[:space:]\n" (1- (point))) 0)
+ 'again))
+
+(defun yas-longest-key-from-whitespace (start-point)
+ "As `yas-key-syntaxes' element, look for longest key between point and whitespace.
+
+A newline will be considered whitespace even if the mode syntax
+marks it as something else (typically comment ender)."
+ (if (= (point) start-point)
+ (yas-try-key-from-whitespace start-point)
+ (forward-char))
+ (unless (<= start-point (1+ (point)))
+ 'again))
+
+
\f
;;; User convenience functions, for using in snippet definitions
The last element of POSSIBILITIES may be a list of strings."
(unless (or yas-moving-away-p
yas-modified-p)
- (setq possibilities (nreverse possibilities))
- (setq possibilities (if (listp (car possibilities))
- (append (reverse (car possibilities)) (rest possibilities))
- possibilities))
+ (let* ((last-link (last possibilities))
+ (last-elem (car last-link)))
+ (when (listp last-elem)
+ (setcar last-link (car last-elem))
+ (setcdr last-link (cdr last-elem))))
(some #'(lambda (fn)
(funcall fn "Choose: " possibilities))
yas-prompt-functions)))
(defvar yas--field-protection-overlays nil
"Two overlays protect the current active field.")
-(defconst yas--prefix nil
- "A prefix argument for expansion direct from keybindings.")
-
(defvar yas-selected-text nil
"The selected region deleted on the last snippet expansion.")
force-exit)
(defstruct (yas--field (:constructor yas--make-field (number start end parent-field)))
- "A field."
+ "A field.
+
+NUMBER is the field number.
+START and END are mostly buffer markers, but see \"apropos markers-to-points\".
+PARENT-FIELD is a `yas--field' this field is nested under, or nil.
+MIRRORS is a list of `yas--mirror's
+TRANSFORM is a lisp form.
+MODIFIED-P is a boolean set to true once user inputs text.
+NEXT is another `yas--field' or `yas--mirror' or `yas--exit'.
+"
number
start end
parent-field
(modified-p nil)
next)
+
(defstruct (yas--mirror (:constructor yas--make-mirror (start end transform)))
- "A mirror."
+ "A mirror.
+
+START and END are mostly buffer markers, but see \"apropos markers-to-points\".
+TRANSFORM is a lisp form.
+PARENT-FIELD is a `yas--field' this mirror is nested under, or nil.
+NEXT is another `yas--field' or `yas--mirror' or `yas--exit'
+DEPTH is a count of how many nested mirrors can affect this mirror"
start end
(transform nil)
parent-field
- next)
+ next
+ depth)
(defstruct (yas--exit (:constructor yas--make-exit (marker)))
marker
If there is a transform but it returns nil, return the empty
string iff EMPTY-ON-NIL-P is true."
(let* ((yas-text (yas--field-text-for-display field))
- (text yas-text)
(yas-modified-p (yas--field-modified-p field))
(yas-moving-away-p nil)
(transform (if (yas--mirror-p field-or-mirror)
(yas--field-transform active-field))
(let* ((yas-moving-away-p t)
(yas-text (yas--field-text-for-display active-field))
- (text yas-text)
(yas-modified-p (yas--field-modified-p active-field)))
;; primary field transform: exit call to field-transform
(yas--eval-lisp (yas--field-transform active-field))))
(setf (yas--snippet-active-field snippet) field)
;; primary field transform: first call to snippet transform
(unless (yas--field-modified-p field)
- (if (yas--field-update-display field snippet)
+ (if (yas--field-update-display field)
(yas--update-mirrors snippet)
(setf (yas--field-modified-p field) nil))))))
\f
;;; Some low level snippet-routines:
+(defvar yas--inhibit-overlay-hooks nil
+ "Bind this temporarily to non-nil to prevent running `yas--on-*-modification'.")
+
(defmacro yas--inhibit-overlay-hooks (&rest body)
"Run BODY with `yas--inhibit-overlay-hooks' set to t."
(declare (indent 0))
`(let ((yas--inhibit-overlay-hooks t))
- (progn ,@body)))
+ ,@body))
(defvar yas-snippet-beg nil "Beginning position of the last snippet committed.")
(defvar yas-snippet-end nil "End position of the last snippet committed.")
(defun yas--check-commit-snippet ()
- "Checks if point exited the currently active field of the snippet.
+ "Check if point exited the currently active field of the snippet.
If so cleans up the whole snippet up."
(let* ((snippets (yas--snippets-at-point 'all-snippets))
(eq this-command 'redo)))
(defun yas--make-control-overlay (snippet start end)
- "Creates the control overlay that surrounds the snippet and
+ "Create the control overlay that surrounds the snippet and
holds the keymap."
(let ((overlay (make-overlay start
end
(overlay-put yas--active-field-overlay 'insert-behind-hooks
'(yas--on-field-overlay-modification))))
-(defvar yas--inhibit-overlay-hooks nil
- "Bind this temporarily to non-nil to prevent running `yas--on-*-modification'.")
-
-(defun yas--on-field-overlay-modification (overlay after? beg end &optional length)
+(defun yas--on-field-overlay-modification (overlay after? _beg _end &optional _length)
"Clears the field and updates mirrors, conditionally.
Only clears the field if it hasn't been modified and it point it
-at field start. This hook doesn't do anything if an undo is in
+at field start. This hook doesn't do anything if an undo is in
progress."
(unless (or yas--inhibit-overlay-hooks
(yas--undo-in-progress))
(let* ((field (overlay-get overlay 'yas--field))
- (number (and field (yas--field-number field)))
(snippet (overlay-get yas--active-field-overlay 'yas--snippet)))
(cond (after?
(yas--advance-end-maybe field (overlay-end overlay))
(save-excursion
- (yas--field-update-display field snippet))
+ (yas--field-update-display field))
(yas--update-mirrors snippet))
(field
(when (and (not after?)
nil. The variables value is the point where the violation
originated")
-(defun yas--on-protection-overlay-modification (overlay after? beg end &optional length)
+(defun yas--on-protection-overlay-modification (_overlay after? _beg _end &optional _length)
"Signals a snippet violation, then issues error.
The error should be ignored in `debug-ignored-errors'"
(add-to-list 'debug-ignored-errors "^Exit the snippet first!$")
\f
-;; Snippet expansion and "stacked" expansion:
+;;; Snippet expansion and "stacked" expansion:
;;
;; Stacked expansion is when you try to expand a snippet when already
;; inside a snippet expansion.
;; plain text will get recorded at the end.
;;
;; stacked expansion: also shoosh the overlay modification hooks
- (save-restriction
- (narrow-to-region start start)
- (let ((buffer-undo-list t))
- ;; snippet creation might evaluate users elisp, which
- ;; might generate errors, so we have to be ready to catch
- ;; them mostly to make the undo information
- ;;
- (setq yas--start-column (save-restriction (widen) (current-column)))
- (yas--inhibit-overlay-hooks
- (setq snippet
- (if expand-env
- (eval `(let* ,expand-env
- (insert content)
- (yas--snippet-create (point-min) (point-max))))
- (insert content)
- (yas--snippet-create (point-min) (point-max)))))))
+ (let ((buffer-undo-list t))
+ ;; snippet creation might evaluate users elisp, which
+ ;; might generate errors, so we have to be ready to catch
+ ;; them mostly to make the undo information
+ ;;
+ (setq yas--start-column (current-column))
+ (yas--inhibit-overlay-hooks
+ (setq snippet
+ (if expand-env
+ (eval `(let* ,expand-env
+ (insert content)
+ (yas--snippet-create start (point))))
+ (insert content)
+ (yas--snippet-create start (point))))))
;; stacked-expansion: This checks for stacked expansion, save the
;; `yas--previous-active-field' and advance its boundary.
(yas--message 3 "snippet expanded.")
t))))
-(defun yas--take-care-of-redo (beg end snippet)
+(defun yas--take-care-of-redo (_beg _end snippet)
"Commits SNIPPET, which in turn pushes an undo action for reviving it.
Meant to exit in the `buffer-undo-list'."
(defun yas--snippet-revive (beg end snippet)
"Revives SNIPPET and creates a control overlay from BEG to END.
-BEG and END are, we hope, the original snippets boundaries. All
-the markers/points exiting existing inside SNIPPET should point
+BEG and END are, we hope, the original snippets boundaries.
+All the markers/points exiting existing inside SNIPPET should point
to their correct locations *at the time the snippet is revived*.
After revival, push the `yas--take-care-of-redo' in the
buffer-undo-list))))
(defun yas--snippet-create (begin end)
- "Creates a snippet from an template inserted between BEGIN and END.
+ "Create a snippet from a template inserted at BEGIN to END.
Returns the newly created snippet."
- (let ((snippet (yas--make-snippet)))
- (goto-char begin)
- (yas--snippet-parse-create snippet)
+ (save-restriction
+ (narrow-to-region begin end)
+ (let ((snippet (yas--make-snippet)))
+ (goto-char begin)
+ (yas--snippet-parse-create snippet)
- ;; Sort and link each field
- (yas--snippet-sort-fields snippet)
+ ;; Sort and link each field
+ (yas--snippet-sort-fields snippet)
- ;; Create keymap overlay for snippet
- (setf (yas--snippet-control-overlay snippet)
- (yas--make-control-overlay snippet (point-min) (point-max)))
+ ;; Create keymap overlay for snippet
+ (setf (yas--snippet-control-overlay snippet)
+ (yas--make-control-overlay snippet (point-min) (point-max)))
- ;; Move to end
- (goto-char (point-max))
+ ;; Move to end
+ (goto-char (point-max))
- snippet))
+ snippet)))
\f
;;; Apropos adjacencies and "fom's":
This is according to their relative positions in the buffer, and
has to be called before the $-constructs are deleted."
- (cl-flet ((yas--fom-set-next-fom (fom nextfom)
- (cond ((yas--field-p fom)
- (setf (yas--field-next fom) nextfom))
- ((yas--mirror-p fom)
- (setf (yas--mirror-next fom) nextfom))
- (t
- (setf (yas--exit-next fom) nextfom))))
- (yas--compare-fom-begs (fom1 fom2)
- (if (= (yas--fom-start fom2) (yas--fom-start fom1))
- (yas--mirror-p fom2)
- (>= (yas--fom-start fom2) (yas--fom-start fom1))))
- (yas--link-foms (fom1 fom2)
- (yas--fom-set-next-fom fom1 fom2)))
+ (let* ((fom-set-next-fom
+ (lambda (fom nextfom)
+ (cond ((yas--field-p fom)
+ (setf (yas--field-next fom) nextfom))
+ ((yas--mirror-p fom)
+ (setf (yas--mirror-next fom) nextfom))
+ (t
+ (setf (yas--exit-next fom) nextfom)))))
+ (compare-fom-begs
+ (lambda (fom1 fom2)
+ (if (= (yas--fom-start fom2) (yas--fom-start fom1))
+ (yas--mirror-p fom2)
+ (>= (yas--fom-start fom2) (yas--fom-start fom1)))))
+ (link-foms fom-set-next-fom))
;; make some yas--field, yas--mirror and yas--exit soup
(let ((soup))
(when (yas--snippet-exit snippet)
(dolist (mirror (yas--field-mirrors field))
(push mirror soup)))
(setq soup
- (sort soup
- #'yas--compare-fom-begs))
+ (sort soup compare-fom-begs))
(when soup
- (reduce #'yas--link-foms soup)))))
+ (reduce link-foms soup)))))
(defun yas--calculate-mirrors-in-fields (snippet mirror)
"Attempt to assign a parent field of SNIPPET to the mirror MIRROR.
"Like `yas--advance-end-maybe' but for parent fields.
Only works for fields and doesn't care about the start of the
-next FOM. Works its way up recursively for parents of parents."
+next FOM. Works its way up recursively for parents of parents."
(when (and field
(< (yas--field-end field) newend))
(set-marker (yas--field-end field) newend)
(defvar yas--backquote-markers-and-strings nil
"List of (MARKER . STRING) marking where the values from
-backquoted lisp expressions should be inserted at the end of
+backquoted Lisp expressions should be inserted at the end of
expansion.")
(defun yas--snippet-parse-create (snippet)
(yas--calculate-adjacencies snippet)
;; Delete $-constructs
;;
- (yas--delete-regions yas--dollar-regions)
+ (save-restriction (widen) (yas--delete-regions yas--dollar-regions))
;; restore backquoted expression values
;;
(yas--restore-backquotes)
snippet-markers)))
(save-restriction
(widen)
- (condition-case err
+ (condition-case _
(indent-according-to-mode)
(error (yas--message 3 "Warning: `yas--indent-according-to-mode' having problems running %s" indent-line-function)
nil)))
with their evaluated value into `yas--backquote-markers-and-strings'."
(while (re-search-forward yas--backquote-lisp-expression-regexp nil t)
(let ((current-string (match-string-no-properties 1)) transformed)
- (delete-region (match-beginning 0) (match-end 0))
+ (save-restriction (widen)
+ (delete-region (match-beginning 0) (match-end 0)))
(setq transformed (yas--eval-lisp (yas--read-lisp (yas--restore-escapes current-string '(?`)))))
(goto-char (match-beginning 0))
(when transformed
(let ((marker (make-marker)))
- (insert "Y") ;; quite horrendous, I love it :)
- (set-marker marker (point))
- (insert "Y")
+ (save-restriction
+ (widen)
+ (insert "Y") ;; quite horrendous, I love it :)
+ (set-marker marker (point))
+ (insert "Y"))
(push (cons marker transformed) yas--backquote-markers-and-strings))))))
(defun yas--restore-backquotes ()
(string (cdr marker-and-string)))
(save-excursion
(goto-char marker)
- (delete-char -1)
- (insert string)
- (delete-char 1)
+ (save-restriction
+ (widen)
+ (delete-char -1)
+ (insert string)
+ (delete-char 1))
(set-marker marker nil)))))
(defun yas--scan-sexps (from count)
- (condition-case err
+ (condition-case _
(with-syntax-table (standard-syntax-table)
(scan-sexps from count))
(error
* \"${n: text}\", for a numbered field with default text, as long as N is not 0;
-* \"${n: text$(expression)}, the same with a lisp expression;
+* \"${n: text$(expression)}, the same with a Lisp expression;
this is caught with the curiously named `yas--multi-dollar-lisp-expression-regexp'
* the same as above but unnumbered, (no N:) and number is calculated automatically.
#'(lambda (r1 r2)
(>= (car r1) (car r2))))))
+(defun yas--calculate-mirror-depth (mirror &optional traversed)
+ (let* ((parent (yas--mirror-parent-field mirror))
+ (parents-mirrors (and parent
+ (yas--field-mirrors parent))))
+ (or (yas--mirror-depth mirror)
+ (setf (yas--mirror-depth mirror)
+ (cond ((memq mirror traversed)
+ 0)
+ ((and parent parents-mirrors)
+ (1+ (reduce #'max
+ (mapcar #'(lambda (m)
+ (yas--calculate-mirror-depth m
+ (cons mirror
+ traversed)))
+ parents-mirrors))))
+ (parent
+ 1)
+ (t
+ 0))))))
+
(defun yas--update-mirrors (snippet)
- "Updates all the mirrors of SNIPPET."
+ "Update all the mirrors of SNIPPET."
(save-excursion
(dolist (field-and-mirror (sort
;; make a list of ((F1 . M1) (F1 . M2) (F2 . M3) (F2 . M4) ...)
;; another mirror to need reupdating
;;
#'(lambda (field-and-mirror1 field-and-mirror2)
- (yas--mirror-parent-field (cdr field-and-mirror1)))))
+ (> (yas--calculate-mirror-depth (cdr field-and-mirror1))
+ (yas--calculate-mirror-depth (cdr field-and-mirror2))))))
(let* ((field (car field-and-mirror))
(mirror (cdr field-and-mirror))
(parent-field (yas--mirror-parent-field mirror)))
;; super-special advance
(yas--advance-end-of-parents-maybe mirror-parent-field (point))))))
-(defun yas--field-update-display (field snippet)
+(defun yas--field-update-display (field)
"Much like `yas--mirror-update-display', but for fields."
(when (yas--field-transform field)
(let ((transformed (and (not (eq (yas--field-number field) 0))
- (yas--apply-transform field field)))
- (point (point)))
+ (yas--apply-transform field field))))
(when (and transformed
(not (string= transformed (buffer-substring-no-properties (yas--field-start field)
(yas--field-end field)))))
\f
;;; Post-command hook:
-
+;;
(defun yas--post-command-handler ()
"Handles various yasnippet conditions after each command."
(cond (yas--protection-violation
;; depending on the context.
;;
(put 'yas-expand 'function-documentation
- '(yas--expand-from-trigger-key-doc))
-(defun yas--expand-from-trigger-key-doc ()
+ '(yas--expand-from-trigger-key-doc t))
+(defun yas--expand-from-trigger-key-doc (context)
"A doc synthesizer for `yas--expand-from-trigger-key-doc'."
- (let ((fallback-description
- (cond ((eq yas-fallback-behavior 'call-other-command)
- (let* ((fallback (yas--keybinding-beyond-yasnippet)))
- (or (and fallback
- (format " call command `%s'." (pp-to-string fallback)))
- " do nothing (`yas-expand' doesn't shadow\nanything)")))
- ((eq yas-fallback-behavior 'return-nil)
- ", do nothing.")
- (t
- ", defer to `yas-fallback-behaviour' (which see)"))))
+ (let* ((yas-fallback-behavior (and context yas-fallback-behavior))
+ (fallback-description
+ (cond ((eq yas-fallback-behavior 'call-other-command)
+ (let* ((fallback (yas--keybinding-beyond-yasnippet)))
+ (or (and fallback
+ (format "call command `%s'."
+ (pp-to-string fallback)))
+ "do nothing (`yas-expand' doesn't shadow\nanything).")))
+ ((eq yas-fallback-behavior 'return-nil)
+ "do nothing.")
+ (t "defer to `yas-fallback-behavior' (which see)."))))
(concat "Expand a snippet before point. If no snippet
-expansion is possible,"
+expansion is possible, "
fallback-description
"\n\nOptional argument FIELD is for non-interactive use and is an
object satisfying `yas--field-p' to restrict the expansion to.")))
-(put 'yas-expand-from-keymap 'function-documentation '(yas--expand-from-keymap-doc))
-(defun yas--expand-from-keymap-doc ()
+(put 'yas-expand-from-keymap 'function-documentation
+ '(yas--expand-from-keymap-doc t))
+(defun yas--expand-from-keymap-doc (context)
"A doc synthesizer for `yas--expand-from-keymap-doc'."
(add-hook 'temp-buffer-show-hook 'yas--snippet-description-finish-runonce)
(concat "Expand/run snippets from keymaps, possibly falling back to original binding.\n"
- (when (eq this-command 'describe-key)
+ (when (and context (eq this-command 'describe-key))
(let* ((vec (this-single-command-keys))
(templates (mapcan #'(lambda (table)
(yas--fetch table vec))
(help-xref-button 1 'help-snippet-def template)
(kill-region (match-end 1) (match-end 0))
(kill-region (match-beginning 0) (match-beginning 1)))))))
-
-(defun yas--expand-uuid (mode-symbol uuid &optional start end expand-env)
- "Expand a snippet registered in MODE-SYMBOL's table with UUID.
-
-Remaining args as in `yas-expand-snippet'."
- (let* ((table (gethash mode-symbol yas--tables))
- (yas--current-template (and table
- (gethash uuid (yas--table-uuidhash table)))))
- (when yas--current-template
- (yas-expand-snippet (yas--template-content yas--current-template)))))
\f
;;; Utils
(defun yas--message (level message &rest args)
"When LEVEL is above `yas-verbosity-level', log MESSAGE and ARGS."
(when (> yas-verbosity level)
- (message (apply #'yas--format message args))))
+ (message "%s" (apply #'yas--format message args))))
(defun yas--format (format-control &rest format-args)
(apply #'format (concat "[yas] " format-control) format-args))
;; `name' in /home or in /.
(setq file (abbreviate-file-name file))
(let ((root nil)
- (prev-file file)
- ;; `user' is not initialized outside the loop because
- ;; `file' may not exist, so we may have to walk up part of the
- ;; hierarchy before we find the "initial UUID".
- (user nil)
try)
(while (not (or root
(null file)
(string-match locate-dominating-stop-dir-regexp file)))
(setq try (file-exists-p (expand-file-name name file)))
(cond (try (setq root file))
- ((equal file (setq prev-file file
- file (file-name-directory
+ ((equal file (setq file (file-name-directory
(directory-file-name file))))
(setq file nil))))
root))))
-;; `c-neutralize-syntax-in-CPP` sometimes fires "End of Buffer" error
-;; (when it execute forward-char) and interrupt the after change
-;; hook. Thus prevent the insert-behind hook of yasnippet to be
-;; invoked. Here's a way to reproduce it:
-
-;; # open a *new* Emacs.
-;; # load yasnippet.
-;; # open a *new* .cpp file.
-;; # input "inc" and press TAB to expand the snippet.
-;; # select the `#include <...>` snippet.
-;; # type inside `<>`
-
-(defadvice c-neutralize-syntax-in-CPP
- (around yas--mp/c-neutralize-syntax-in-CPP activate)
- "Adviced `c-neutralize-syntax-in-CPP' to properly
-handle the end-of-buffer error fired in it by calling
-`forward-char' at the end of buffer."
- (condition-case err
- ad-do-it
- (error (message (error-message-string err)))))
-
-;; disable c-electric-* serial command in YAS fields
-(add-hook 'c-mode-common-hook
- '(lambda ()
- (dolist (k '(":" ">" ";" "<" "{" "}"))
- (define-key (symbol-value (make-local-variable 'yas-keymap))
- k 'self-insert-command))))
\f
;;; Backward compatibility to yasnippet <= 0.7
-(defvar yas--exported-syms '(;; `defcustom's
+
+(defvar yas--backported-syms '(;; `defcustom's
;;
yas-snippet-dirs
yas-prompt-functions
yas-snippet-end
yas-modified-p
yas-moving-away-p
- yas-text
yas-substr
yas-choose-value
yas-key-to-value
yas-unimplemented
yas-define-condition-cache
yas-hippie-try-expand
- yas-active-keys
;; debug definitions
;; yas-debug-snippet-vars
;; yas-call-with-snippet-dirs
;; yas-with-snippet-dirs
)
- "Exported yasnippet symbols.
+ "Backported yasnippet symbols.
-i.e. ones that I will try to keep in future yasnippet versions
-and ones that other elisp libraries can more or less safely rely
-upon.")
+They are mapped to \"yas/*\" variants.")
-(defvar yas--dont-backport '(yas-active-keys)
- "Exported symbols that don't map back to \"yas/*\" variants.")
-
-(dolist (sym (set-difference yas--exported-syms yas--dont-backport))
+(dolist (sym yas--backported-syms)
(let ((backported (intern (replace-regexp-in-string "^yas-" "yas/" (symbol-name sym)))))
(when (boundp sym)
(make-obsolete-variable backported sym "yasnippet 0.8")
(make-obsolete backported sym "yasnippet 0.8")
(defalias backported sym))))
+(defvar yas--exported-syms
+ (let (exported)
+ (mapatoms (lambda (atom)
+ (if (and (or (and (boundp atom)
+ (not (get atom 'byte-obsolete-variable)))
+ (and (fboundp atom)
+ (not (get atom 'byte-obsolete-info))))
+ (string-match-p "^yas-[^-]" (symbol-name atom)))
+ (push atom exported))))
+ exported)
+ "Exported yasnippet symbols.
+
+i.e. the ones with \"yas-\" single dash prefix. I will try to
+keep them in future yasnippet versions and other elisp libraries
+can more or less safely rely upon them.")
+
\f
(provide 'yasnippet)