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