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| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Mon Sep 03 08:19:47 2012 +0200 (2012-09-03) |
| parents | |
| children |
line source
1 ;;; vala-mode.el --- Vala mode derived mode
3 ;; Author: 2005 Dylan R. E. Moonfire
4 ;; 2008 Étienne BERSAC
5 ;; Maintainer: Étienne BERSAC <bersace03@laposte.net>
6 ;; Created: 2008 May the 4th
7 ;; Modified: May 2008
8 ;; Version: 0.1
9 ;; Keywords: vala languages oop
11 ;; This program is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2 of the License, or
14 ;; (at your option) any later version.
15 ;;
16 ;; This program is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
20 ;;
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with this program; see the file COPYING. If not, write to
23 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
26 ;;; Commentary:
27 ;;
28 ;; See http://live.gnome.org/Vala for details about Vala language.
29 ;;
30 ;; This is a separate mode to implement the Vala constructs and
31 ;; font-locking. It is mostly the csharp-mode from
32 ;; http://mfgames.com/linux/csharp-mode with vala specific keywords
33 ;; and filename suffixes.
34 ;;
35 ;; Note: The interface used in this file requires CC Mode 5.30 or
36 ;; later.
38 ;;; .emacs (don't put in (require 'vala-mode))
39 ;; (autoload 'vala-mode "vala-mode" "Major mode for editing Vala code." t)
40 ;; (setq auto-mode-alist
41 ;; (append '(("\\.vala$" . vala-mode)) auto-mode-alist))
43 ;;; Versions:
44 ;;
45 ;; 0.1 : Initial version based on csharp-mode
46 ;;
48 ;; This is a copy of the function in cc-mode which is used to handle
49 ;; the eval-when-compile which is needed during other times.
50 (defun c-filter-ops (ops opgroup-filter op-filter &optional xlate)
51 ;; See cc-langs.el, a direct copy.
52 (unless (listp (car-safe ops))
53 (setq ops (list ops)))
54 (cond ((eq opgroup-filter t)
55 (setq opgroup-filter (lambda (opgroup) t)))
56 ((not (functionp opgroup-filter))
57 (setq opgroup-filter `(lambda (opgroup)
58 (memq opgroup ',opgroup-filter)))))
59 (cond ((eq op-filter t)
60 (setq op-filter (lambda (op) t)))
61 ((stringp op-filter)
62 (setq op-filter `(lambda (op)
63 (string-match ,op-filter op)))))
64 (unless xlate
65 (setq xlate 'identity))
66 (c-with-syntax-table (c-lang-const c-mode-syntax-table)
67 (delete-duplicates
68 (mapcan (lambda (opgroup)
69 (when (if (symbolp (car opgroup))
70 (when (funcall opgroup-filter (car opgroup))
71 (setq opgroup (cdr opgroup))
72 t)
73 t)
74 (mapcan (lambda (op)
75 (when (funcall op-filter op)
76 (let ((res (funcall xlate op)))
77 (if (listp res) res (list res)))))
78 opgroup)))
79 ops)
80 :test 'equal)))
82 ;; This inserts the bulk of the code.
83 (require 'cc-mode)
85 ;; These are only required at compile time to get the sources for the
86 ;; language constants. (The cc-fonts require and the font-lock
87 ;; related constants could additionally be put inside an
88 ;; (eval-after-load "font-lock" ...) but then some trickery is
89 ;; necessary to get them compiled.)
90 (eval-when-compile
91 (let ((load-path
92 (if (and (boundp 'byte-compile-dest-file)
93 (stringp byte-compile-dest-file))
94 (cons (file-name-directory byte-compile-dest-file) load-path)
95 load-path)))
96 (load "cc-mode" nil t)
97 (load "cc-fonts" nil t)
98 (load "cc-langs" nil t)))
100 (eval-and-compile
101 ;; Make our mode known to the language constant system. Use Java
102 ;; mode as the fallback for the constants we don't change here.
103 ;; This needs to be done also at compile time since the language
104 ;; constants are evaluated then.
105 (c-add-language 'vala-mode 'java-mode))
107 ;; Java uses a series of regexes to change the font-lock for class
108 ;; references. The problem comes in because Java uses Pascal (leading
109 ;; space in names, SomeClass) for class and package names, but
110 ;; Camel-casing (initial lowercase, upper case in words,
111 ;; i.e. someVariable) for variables.
112 ;;(error (byte-compile-dest-file))
113 ;;(error (c-get-current-file))
114 (c-lang-defconst c-opt-after-id-concat-key
115 vala (if (c-lang-const c-opt-identifier-concat-key)
116 (c-lang-const c-symbol-start)))
118 (c-lang-defconst c-basic-matchers-before
119 vala `(
120 ;;;; Font-lock the attributes by searching for the
121 ;;;; appropriate regex and marking it as TODO.
122 ;;,`(,(concat "\\(" vala-attribute-regex "\\)")
123 ;; 0 font-lock-function-name-face)
125 ;; Put a warning face on the opener of unclosed strings that
126 ;; can't span lines. Later font
127 ;; lock packages have a `font-lock-syntactic-face-function' for
128 ;; this, but it doesn't give the control we want since any
129 ;; fontification done inside the function will be
130 ;; unconditionally overridden.
131 ,(c-make-font-lock-search-function
132 ;; Match a char before the string starter to make
133 ;; `c-skip-comments-and-strings' work correctly.
134 (concat ".\\(" c-string-limit-regexp "\\)")
135 '((c-font-lock-invalid-string)))
137 ;; Fontify keyword constants.
138 ,@(when (c-lang-const c-constant-kwds)
139 (let ((re (c-make-keywords-re nil
140 (c-lang-const c-constant-kwds))))
141 `((eval . (list ,(concat "\\<\\(" re "\\)\\>")
142 1 c-constant-face-name)))))
144 ;; Fontify all keywords except the primitive types.
145 ,`(,(concat "\\<" (c-lang-const c-regular-keywords-regexp))
146 1 font-lock-keyword-face)
148 ;; Fontify leading identifiers in fully
149 ;; qualified names like "Foo.Bar".
150 ,@(when (c-lang-const c-opt-identifier-concat-key)
151 `((,(byte-compile
152 `(lambda (limit)
153 (while (re-search-forward
154 ,(concat "\\(\\<" ; 1
155 "\\(" (c-lang-const c-symbol-key)
156 "\\)" ; 2
157 "[ \t\n\r\f\v]*"
158 (c-lang-const
159 c-opt-identifier-concat-key)
160 "[ \t\n\r\f\v]*"
161 "\\)"
162 "\\("
163 (c-lang-const
164 c-opt-after-id-concat-key)
165 "\\)")
166 limit t)
167 (unless (progn
168 (goto-char (match-beginning 0))
169 (c-skip-comments-and-strings limit))
170 (or (get-text-property (match-beginning 2) 'face)
171 (c-put-font-lock-face (match-beginning 2)
172 (match-end 2)
173 c-reference-face-name))
174 (goto-char (match-end 1)))))))))
175 ))
177 ;; Vala does not allow a leading qualifier operator. It also doesn't
178 ;; allow the ".*" construct of Java. So, we redo this regex without
179 ;; the "\\|\\*" regex.
180 (c-lang-defconst c-identifier-key
181 vala (concat "\\(" (c-lang-const c-symbol-key) "\\)" ; 1
182 (concat "\\("
183 "[ \t\n\r\f\v]*"
184 (c-lang-const c-opt-identifier-concat-key)
185 "[ \t\n\r\f\v]*"
186 (concat "\\("
187 "\\(" (c-lang-const c-symbol-key) "\\)"
188 "\\)")
189 "\\)*")))
191 ;; Vala has a few rules that are slightly different than Java for
192 ;; operators. This also removed the Java's "super" and replaces it
193 ;; with the Vala's "base".
194 (c-lang-defconst c-operators
195 vala `((prefix "base")))
197 ;; Vala directives ?
198 ;; (c-lang-defconst c-opt-cpp-prefix
199 ;; csharp "^\\s *#.*")
202 ;; Vala uses the following assignment operators
203 (c-lang-defconst c-assignment-operators
204 vala '("=" "*=" "/=" "%=" "+=" "-=" ">>=" "<<="
205 "&=" "^=" "|=" "++" "--"))
207 ;; This defines the primative types for Vala
208 (c-lang-defconst c-primitive-type-kwds
209 vala '("void" "char" "int" "float" "double" "string"))
211 ;; The keywords that define that the following is a type, such as a
212 ;; class definition.
213 (c-lang-defconst c-type-prefix-kwds
214 vala '("class" "interface" "struct" "enum" "signal"))
216 ;; Type modifier keywords. They appear anywhere in types, but modifiy
217 ;; instead create one.
218 (c-lang-defconst c-type-modifier-kwds
219 vala '("const"))
221 ;; Structures that are similiar to classes.
222 (c-lang-defconst c-class-decl-kwds
223 vala '("class" "interface"))
225 ;; The various modifiers used for class and method descriptions.
226 (c-lang-defconst c-modifier-kwds
227 vala '("public" "partial" "private" "const" "abstract"
228 "protected" "ref" "in" "out" "static" "virtual"
229 "override" "params" "internal" "weak" "owned"
230 "unowned"))
232 ;; We don't use the protection level stuff because it breaks the
233 ;; method indenting. Not sure why, though.
234 (c-lang-defconst c-protection-kwds
235 vala nil)
237 ;; Define the keywords that can have something following after them.
238 (c-lang-defconst c-type-list-kwds
239 vala '("struct" "class" "interface" "is" "as"
240 "delegate" "event" "set" "get" "add" "remove"
241 "callback" "signal" "var" "default"))
243 ;; This allows the classes after the : in the class declartion to be
244 ;; fontified.
245 (c-lang-defconst c-typeless-decl-kwds
246 vala '(":"))
248 ;; Sets up the enum to handle the list properly
249 (c-lang-defconst c-brace-list-decl-kwds
250 vala '("enum" "errordomain"))
252 ;; We need to remove Java's package keyword
253 (c-lang-defconst c-ref-list-kwds
254 vala '("using" "namespace" "construct"))
256 ;; Follow-on blocks that don't require a brace
257 (c-lang-defconst c-block-stmt-2-kwds
258 vala '("for" "if" "switch" "while" "catch" "foreach" "lock"))
260 ;; Statements that break out of braces
261 (c-lang-defconst c-simple-stmt-kwds
262 vala '("return" "continue" "break" "throw"))
264 ;; Statements that allow a label
265 ;; TODO?
266 (c-lang-defconst c-before-label-kwds
267 vala nil)
269 ;; Constant keywords
270 (c-lang-defconst c-constant-kwds
271 vala '("true" "false" "null"))
273 ;; Keywords that start "primary expressions."
274 (c-lang-defconst c-primary-expr-kwds
275 vala '("this" "base"))
277 ;; We need to treat namespace as an outer block to class indenting
278 ;; works properly.
279 (c-lang-defconst c-other-block-decl-kwds
280 vala '("namespace"))
282 ;; We need to include the "in" for the foreach
283 (c-lang-defconst c-other-kwds
284 vala '("in" "sizeof" "typeof"))
286 (require 'cc-awk)
288 (c-lang-defconst c-at-vsemi-p-fn
289 vala 'c-awk-at-vsemi-p)
292 (defcustom vala-font-lock-extra-types nil
293 "*List of extra types (aside from the type keywords) to recognize in Vala mode.
294 Each list item should be a regexp matching a single identifier.")
296 (defconst vala-font-lock-keywords-1 (c-lang-const c-matchers-1 vala)
297 "Minimal highlighting for Vala mode.")
299 (defconst vala-font-lock-keywords-2 (c-lang-const c-matchers-2 vala)
300 "Fast normal highlighting for Vala mode.")
302 (defconst vala-font-lock-keywords-3 (c-lang-const c-matchers-3 vala)
303 "Accurate normal highlighting for Vala mode.")
305 (defvar vala-font-lock-keywords vala-font-lock-keywords-3
306 "Default expressions to highlight in Vala mode.")
308 (defvar vala-mode-syntax-table
309 nil
310 "Syntax table used in vala-mode buffers.")
311 (or vala-mode-syntax-table
312 (setq vala-mode-syntax-table
313 (funcall (c-lang-const c-make-mode-syntax-table vala))))
315 (defvar vala-mode-abbrev-table nil
316 "Abbreviation table used in vala-mode buffers.")
317 (c-define-abbrev-table 'vala-mode-abbrev-table
318 ;; Keywords that if they occur first on a line
319 ;; might alter the syntactic context, and which
320 ;; therefore should trig reindentation when
321 ;; they are completed.
322 '(("else" "else" c-electric-continued-statement 0)
323 ("while" "while" c-electric-continued-statement 0)
324 ("catch" "catch" c-electric-continued-statement 0)
325 ("finally" "finally" c-electric-continued-statement 0)))
327 (defvar vala-mode-map (let ((map (c-make-inherited-keymap)))
328 ;; Add bindings which are only useful for Vala
329 map)
330 "Keymap used in vala-mode buffers.")
332 ;;(easy-menu-define vala-menu vala-mode-map "Vala Mode Commands"
333 ;; ;; Can use `vala' as the language for `c-mode-menu'
334 ;; ;; since its definition covers any language. In
335 ;; ;; this case the language is used to adapt to the
336 ;; ;; nonexistence of a cpp pass and thus removing some
337 ;; ;; irrelevant menu alternatives.
338 ;; (cons "Vala" (c-lang-const c-mode-menu vala)))
340 ;;; Autoload mode trigger
341 (add-to-list 'auto-mode-alist '("\\.vala$" . vala-mode))
342 (add-to-list 'auto-mode-alist '("\\.vapi$" . vala-mode))
344 ;; Custom variables
345 (defcustom vala-mode-hook nil
346 "*Hook called by `vala-mode'."
347 :type 'hook
348 :group 'c)
350 ;;; The entry point into the mode
351 ;;;###autoload
352 (defun vala-mode ()
353 "Major mode for editing Vala code.
354 This is a simple example of a separate mode derived from CC Mode
355 to support a language with syntax similar to
356 C#/C/C++/ObjC/Java/IDL/Pike.
358 The hook `c-mode-common-hook' is run with no args at mode
359 initialization, then `vala-mode-hook'.
361 Key bindings:
362 \\{vala-mode-map}"
363 (interactive)
364 (kill-all-local-variables)
365 (c-initialize-cc-mode t)
366 (set-syntax-table vala-mode-syntax-table)
367 (setq major-mode 'vala-mode
368 mode-name "Vala"
369 local-abbrev-table vala-mode-abbrev-table
370 abbrev-mode t)
371 (use-local-map c-mode-map)
372 ;; `c-init-language-vars' is a macro that is expanded at compile
373 ;; time to a large `setq' with all the language variables and their
374 ;; customized values for our language.
375 (c-init-language-vars vala-mode)
376 ;; `c-common-init' initializes most of the components of a CC Mode
377 ;; buffer, including setup of the mode menu, font-lock, etc.
378 ;; There's also a lower level routine `c-basic-common-init' that
379 ;; only makes the necessary initialization to get the syntactic
380 ;; analysis and similar things working.
381 (c-common-init 'vala-mode)
382 ;;(easy-menu-add vala-menu)
383 (c-set-style "linux")
384 (setq indent-tabs-mode t)
385 (setq c-basic-offset 4)
386 (setq tab-width 4)
387 (c-toggle-auto-newline -1)
388 (c-toggle-hungry-state -1)
389 (run-hooks 'c-mode-common-hook)
390 (run-hooks 'vala-mode-hook)
391 (c-update-modeline))
393 (provide 'vala-mode)
395 ;;; vala-mode.el ends here