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;;; vala-mode.el --- Vala mode derived mode -*- lexical-binding: t -*-
;; Author: 2005 Dylan R. E. Moonfire
;; 2008 Étienne BERSAC
;; Maintainer: Étienne BERSAC <bersace03@laposte.net>
;; Modifier: Kentaro NAKAZAWA <kentaro.nakazawa@nifty.com>
;; Created: 2008 May the 4th
;; Modified: April 2011
;; Version: 0.1
;; Keywords: vala languages oop
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;
;; See http://live.gnome.org/Vala for details about Vala language.
;;
;; This is a separate mode to implement the Vala constructs and
;; font-locking. It is mostly the csharp-mode from
;; http://mfgames.com/linux/csharp-mode with vala specific keywords
;; and filename suffixes.
;;
;; Note: The interface used in this file requires CC Mode 5.30 or
;; later.
;;; .emacs (don't put in (require 'vala-mode))
;; (autoload 'vala-mode "vala-mode" "Major mode for editing Vala code." t)
;; (setq auto-mode-alist
;; (append '(("\\.vala$" . vala-mode)) auto-mode-alist))
;;; Versions:
;;
;; 0.1 : Initial version based on csharp-mode
;;
(require 'cl)
;; This is a copy of the function in cc-mode which is used to handle
;; the eval-when-compile which is needed during other times.
(defun c-filter-ops (ops opgroup-filter op-filter &optional xlate)
;; See cc-langs.el, a direct copy.
(unless (listp (car-safe ops))
(setq ops (list ops)))
(cond ((eq opgroup-filter t)
(setq opgroup-filter (lambda (opgroup) t)))
((not (functionp opgroup-filter))
(let ((opgroup-filter-orig opgroup-filter))
(setq opgroup-filter (lambda (opgroup)
(memq opgroup opgroup-filter-orig))))))
(cond ((eq op-filter t)
(setq op-filter (lambda (op) t)))
((stringp op-filter)
(let ((op-filter-orig op-filter))
(setq op-filter (lambda (op)
(string-match op-filter-orig op))))))
(unless xlate
(setq xlate 'identity))
(c-with-syntax-table (c-lang-const c-mode-syntax-table)
(delete-duplicates
(mapcan (lambda (opgroup)
(when (if (symbolp (car opgroup))
(when (funcall opgroup-filter (car opgroup))
(setq opgroup (cdr opgroup))
t)
t)
(mapcan (lambda (op)
(when (funcall op-filter op)
(let ((res (funcall xlate op)))
(if (listp res) res (list res)))))
opgroup)))
ops)
:test 'equal)))
;; This inserts the bulk of the code.
(require 'cc-mode)
;; These are only required at compile time to get the sources for the
;; language constants. (The cc-fonts require and the font-lock
;; related constants could additionally be put inside an
;; (eval-after-load "font-lock" ...) but then some trickery is
;; necessary to get them compiled.)
(eval-when-compile
(let ((load-path
(if (and (boundp 'byte-compile-dest-file)
(stringp byte-compile-dest-file))
(cons (file-name-directory byte-compile-dest-file) load-path)
load-path)))
(load "cc-mode" nil t)
(load "cc-fonts" nil t)
(load "cc-langs" nil t)))
(eval-and-compile
;; Make our mode known to the language constant system. Use Java
;; mode as the fallback for the constants we don't change here.
;; This needs to be done also at compile time since the language
;; constants are evaluated then.
(c-add-language 'vala-mode 'java-mode))
;; Java uses a series of regexes to change the font-lock for class
;; references. The problem comes in because Java uses Pascal (leading
;; space in names, SomeClass) for class and package names, but
;; Camel-casing (initial lowercase, upper case in words,
;; i.e. someVariable) for variables.
;;(error (byte-compile-dest-file))
;;(error (c-get-current-file))
(c-lang-defconst c-opt-after-id-concat-key
vala (if (c-lang-const c-opt-identifier-concat-key)
(c-lang-const c-symbol-start)))
(c-lang-defconst c-basic-matchers-before
vala `(
;;;; Font-lock the attributes by searching for the
;;;; appropriate regex and marking it as TODO.
;;,`(,(concat "\\(" vala-attribute-regex "\\)")
;; 0 font-lock-function-name-face)
;; Put a warning face on the opener of unclosed strings that
;; can't span lines. Later font
;; lock packages have a `font-lock-syntactic-face-function' for
;; this, but it doesn't give the control we want since any
;; fontification done inside the function will be
;; unconditionally overridden.
,(c-make-font-lock-search-function
;; Match a char before the string starter to make
;; `c-skip-comments-and-strings' work correctly.
(concat ".\\(" c-string-limit-regexp "\\)")
'((c-font-lock-invalid-string)))
;; Fontify keyword constants.
,@(when (c-lang-const c-constant-kwds)
(let ((re (c-make-keywords-re nil
(c-lang-const c-constant-kwds))))
`((eval . (list ,(concat "\\<\\(" re "\\)\\>")
1 c-constant-face-name)))))
;; Fontify all keywords except the primitive types.
,`(,(concat "\\<" (c-lang-const c-regular-keywords-regexp))
1 font-lock-keyword-face)
;; Fontify leading identifiers in fully
;; qualified names like "Foo.Bar".
,@(when (c-lang-const c-opt-identifier-concat-key)
(let ((regexp (concat "\\(\\<" ; 1
"\\(" (c-lang-const c-symbol-key)
"\\)" ; 2
"[ \t\n\r\f\v]*"
(c-lang-const
c-opt-identifier-concat-key)
"[ \t\n\r\f\v]*"
"\\)"
"\\("
(c-lang-const
c-opt-after-id-concat-key)
"\\)")))
`((,(lambda (limit)
(while (re-search-forward regexp limit t)
(unless (progn
(goto-char (match-beginning 0))
(c-skip-comments-and-strings limit))
(or (get-text-property (match-beginning 2) 'face)
(c-put-font-lock-face (match-beginning 2)
(match-end 2)
c-reference-face-name))
(goto-char (match-end 1)))))))))
))
;; Vala does not allow a leading qualifier operator. It also doesn't
;; allow the ".*" construct of Java. So, we redo this regex without
;; the "\\|\\*" regex.
(c-lang-defconst c-identifier-key
vala (concat "\\(" (c-lang-const c-symbol-key) "\\)" ; 1
(concat "\\("
"[ \t\n\r\f\v]*"
(c-lang-const c-opt-identifier-concat-key)
"[ \t\n\r\f\v]*"
(concat "\\("
"\\(" (c-lang-const c-symbol-key) "\\)"
"\\)")
"\\)*")))
;; Vala has a few rules that are slightly different than Java for
;; operators. This also removed the Java's "super" and replaces it
;; with the Vala's "base".
(c-lang-defconst c-operators
vala `((prefix "base")))
;; Vala directives
(c-lang-defconst c-opt-cpp-prefix
vala "\\s *#\\s *")
;; Vala uses the following assignment operators
(c-lang-defconst c-assignment-operators
vala '("=" "*=" "/=" "%=" "+=" "-=" ">>=" "<<="
"&=" "^=" "|=" "++" "--"))
;; This defines the primative types for Vala
(c-lang-defconst c-primitive-type-kwds
vala '("void" "bool" "char" "uchar" "short" "ushort" "int" "uint" "long" "ulong"
"size_t" "ssize_t" "int8" "uint8" "int16" "uint16" "int32" "uint32" "int64" "uint64"
"unichar" "float" "double" "string"))
;; The keywords that define that the following is a type, such as a
;; class definition.
(c-lang-defconst c-type-prefix-kwds
vala '("class" "interface" "struct" "enum" "signal"))
;; Type modifier keywords. They appear anywhere in types, but modifiy
;; instead create one.
(c-lang-defconst c-type-modifier-kwds
vala '("const"))
;; Structures that are similiar to classes.
(c-lang-defconst c-class-decl-kwds
vala '("class" "interface"))
;; The various modifiers used for class and method descriptions.
(c-lang-defconst c-modifier-kwds
vala '("public" "partial" "private" "const" "abstract"
"protected" "ref" "in" "out" "static" "virtual"
"override" "params" "internal" "weak" "owned"
"unowned" "async" "yield"))
;; We don't use the protection level stuff because it breaks the
;; method indenting. Not sure why, though.
(c-lang-defconst c-protection-kwds
vala nil)
;; Define the keywords that can have something following after them.
(c-lang-defconst c-type-list-kwds
vala '("struct" "class" "interface" "is" "as"
"delegate" "event" "set" "get" "add" "remove"
"callback" "signal" "var" "default"))
;; This allows the classes after the : in the class declartion to be
;; fontified.
(c-lang-defconst c-typeless-decl-kwds
vala '(":"))
;; Sets up the enum to handle the list properly
(c-lang-defconst c-brace-list-decl-kwds
vala '("enum" "errordomain"))
;; We need to remove Java's package keyword
(c-lang-defconst c-ref-list-kwds
vala '("using" "namespace" "construct"))
;; Follow-on blocks that don't require a brace
(c-lang-defconst c-block-stmt-2-kwds
vala '("for" "if" "switch" "while" "catch" "foreach" "lock"))
;; Statements that break out of braces
(c-lang-defconst c-simple-stmt-kwds
vala '("return" "continue" "break" "throw"))
;; Statements that allow a label
;; TODO?
(c-lang-defconst c-before-label-kwds
vala nil)
;; Constant keywords
(c-lang-defconst c-constant-kwds
vala '("true" "false" "null"))
;; Keywords that start "primary expressions."
(c-lang-defconst c-primary-expr-kwds
vala '("this" "base"))
;; We need to treat namespace as an outer block to class indenting
;; works properly.
(c-lang-defconst c-other-block-decl-kwds
vala '("namespace" "extern"))
;; We need to include the "in" for the foreach
(c-lang-defconst c-other-kwds
vala '("in" "sizeof" "typeof"))
(require 'cc-awk)
(c-lang-defconst c-at-vsemi-p-fn
vala 'c-awk-at-vsemi-p)
;; (defcustom vala-font-lock-extra-types nil
;; "*List of extra types (aside from the type keywords) to recognize in Vala mode.
;; Each list item should be a regexp matching a single identifier.")
(defconst vala-font-lock-keywords-1 (c-lang-const c-matchers-1 vala)
"Minimal highlighting for Vala mode.")
(defconst vala-font-lock-keywords-2 (c-lang-const c-matchers-2 vala)
"Fast normal highlighting for Vala mode.")
(defconst vala-font-lock-keywords-3 (c-lang-const c-matchers-3 vala)
"Accurate normal highlighting for Vala mode.")
(defvar vala-font-lock-keywords vala-font-lock-keywords-3
"Default expressions to highlight in Vala mode.")
(defvar vala-mode-syntax-table
nil
"Syntax table used in vala-mode buffers.")
(or vala-mode-syntax-table
(setq vala-mode-syntax-table
(funcall (c-lang-const c-make-mode-syntax-table vala))))
(defvar vala-mode-abbrev-table nil
"Abbreviation table used in vala-mode buffers.")
(c-define-abbrev-table 'vala-mode-abbrev-table
;; Keywords that if they occur first on a line
;; might alter the syntactic context, and which
;; therefore should trig reindentation when
;; they are completed.
'(("else" "else" c-electric-continued-statement 0)
("while" "while" c-electric-continued-statement 0)
("catch" "catch" c-electric-continued-statement 0)
("finally" "finally" c-electric-continued-statement 0)))
(defvar vala-mode-map (let ((map (c-make-inherited-keymap)))
;; Add bindings which are only useful for Vala
map)
"Keymap used in vala-mode buffers.")
;;(easy-menu-define vala-menu vala-mode-map "Vala Mode Commands"
;; ;; Can use `vala' as the language for `c-mode-menu'
;; ;; since its definition covers any language. In
;; ;; this case the language is used to adapt to the
;; ;; nonexistence of a cpp pass and thus removing some
;; ;; irrelevant menu alternatives.
;; (cons "Vala" (c-lang-const c-mode-menu vala)))
;; Custom variables
(defcustom vala-mode-hook nil
"*Hook called by `vala-mode'."
:type 'hook
:group 'c)
;;; The entry point into the mode
;;;###autoload
(defun vala-mode ()
"Major mode for editing Vala code.
This is a simple example of a separate mode derived from CC Mode
to support a language with syntax similar to
C#/C/C++/ObjC/Java/IDL/Pike.
The hook `c-mode-common-hook' is run with no args at mode
initialization, then `vala-mode-hook'.
Key bindings:
\\{vala-mode-map}"
(interactive)
(kill-all-local-variables)
(c-initialize-cc-mode t)
(set-syntax-table vala-mode-syntax-table)
(setq major-mode 'vala-mode
mode-name "Vala"
local-abbrev-table vala-mode-abbrev-table
abbrev-mode t)
(use-local-map c-mode-map)
;; `c-init-language-vars' is a macro that is expanded at compile
;; time to a large `setq' with all the language variables and their
;; customized values for our language.
(c-init-language-vars vala-mode)
;; `c-common-init' initializes most of the components of a CC Mode
;; buffer, including setup of the mode menu, font-lock, etc.
;; There's also a lower level routine `c-basic-common-init' that
;; only makes the necessary initialization to get the syntactic
;; analysis and similar things working.
(c-common-init 'vala-mode)
;;(easy-menu-add vala-menu)
(c-set-style "linux")
(setq indent-tabs-mode t)
(setq c-basic-offset 4)
(setq tab-width 4)
(c-toggle-auto-newline -1)
(c-toggle-hungry-state -1)
(run-hooks 'c-mode-common-hook)
(run-hooks 'vala-mode-hook)
(c-update-modeline))
;;; mode trigger
;;;###autoload
(add-to-list 'auto-mode-alist '("\\.vala$" . vala-mode))
;;;###autoload
(add-to-list 'auto-mode-alist '("\\.vapi$" . vala-mode))
;;;###autoload
(add-to-list 'file-coding-system-alist '("\\.vala$" . utf-8))
;;;###autoload
(add-to-list 'file-coding-system-alist '("\\.vapi$" . utf-8))
;; Use C# semantics when ECB and CEDET are both installed:
;;;###autoload
(when (and (file-exists-p "/usr/share/emacs/site-lisp/ecb/ecb.el")
(fboundp 'wisent-csharp-default-setup))
(add-hook 'vala-mode-hook #'wisent-csharp-default-setup))
(provide 'vala-mode)
;;; vala-mode.el ends here
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