Initial checkin of emacs mode hoon-mode.el

No indentation support, but somewhat-accurate syntax highlighting.

extras/hoon-mode.el/hoon-mode.el

@@ -0,0 +1,98 @@
+;;; hoon-mode.el --- Major mode for editing hoon files for urbit
+
+;; Copyright (C) 2001  Free Software Foundation, Inc.
+
+;; Author: Adam Bliss <abliss@gmail.com>
+;; Keywords: extensions
+
+;; This file 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, or (at your option)
+;; any later version.
+
+;; This file 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 GNU Emacs; see the file COPYING.  If not, write to
+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; This is my first Major Mode, so don't expect much. It's heavily based on
+;; SampleMode from the emacs wiki.
+
+;;; Code:
+
+(defvar hoon-mode-hook nil)
+
+(defvar hoon-mode-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map "\C-j" 'newline-and-indent)
+    map)
+  "Keymap for `hoon-mode'.")
+
+;;;###autoload
+(add-to-list 'auto-mode-alist '("\\.hoon$" . hoon-mode))
+
+(defvar hoon-mode-syntax-table
+  (let ((st (make-syntax-table lisp-mode-syntax-table)))
+    (modify-syntax-entry ?\' "\"" st)
+    (modify-syntax-entry ?| "." st)
+    (modify-syntax-entry ?; "." st)
+    (modify-syntax-entry ?\" "." st)
+    (modify-syntax-entry ?: ". 12b" st)
+    (modify-syntax-entry ?\n "> b" st)
+    st)
+  "Syntax table for `hoon-mode'.")
+
+(defvar hoon-font-lock-keywords
+  '(
+    ("\\+\\+  \\(\\w+\\)" (1 font-lock-function-name-face))
+    ("\\(%\\w+\\)" (1 font-lock-keyword-face))
+    ("\\(\\w+\\)=" (1 font-lock-variable-name-face))
+    ("[=,]\\(\\w+\\|@\\w*\\)" (1 font-lock-type-face))
+    )
+  "Keyword highlighting specification for `hoon-mode'.")
+
+(defvar hoon-imenu-generic-expression ".*")
+
+(defvar hoon-outline-regexp ":::")
+
+;;;###autoload
+(define-derived-mode hoon-mode fundamental-mode "Hoon"
+  "A major mode for editing Hoon files."
+  :syntax-table hoon-mode-syntax-table
+  (set (make-local-variable 'comment-start) "::")
+  (set (make-local-variable 'comment-end) "")
+  (set (make-local-variable 'comment-use-syntax) nil)
+  (set (make-local-variable 'comment-start-skip) "\\(::+\\)\\s *")
+  (set (make-local-variable 'font-lock-defaults) '(hoon-font-lock-keywords))
+  (set (make-local-variable 'indent-line-function) 'hoon-indent-line)
+  (set (make-local-variable 'imenu-generic-expression)
+       hoon-imenu-generic-expression)
+  (set (make-local-variable 'outline-regexp) hoon-outline-regexp)
+  )
+
+;;; Indentation
+
+(defun hoon-indent-line ()
+  "Indent current line of Hoon code."
+  (interactive)
+  (let ((savep (> (current-column) (current-indentation)))
+        (indent (condition-case nil (max (hoon-calculate-indentation) 0)
+                  (error 0))))
+    (if savep
+        (save-excursion (indent-line-to indent))
+      (indent-line-to indent))))
+
+(defun hoon-calculate-indentation ()
+  "Return the column to which the current line should be indented."
+  0) ;;TODO
+
+
+(provide 'hoon)
+;;; hoon.el ends here