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capnproto/highlighting/emacs/capnp-mode.el

80 lines
2.1 KiB
EmacsLisp

;;; capnp-mode.el --- Major mode for editing Capn' Proto Files
;; This is free and unencumbered software released into the public domain.
;; Author: Brian Taylor <el.wubo@gmail.com>
;; Version: 1.0.0
;; URL: https://github.com/capnproto/capnproto
;;; Commentary:
;; Provides basic syntax highlighting for capnp files.
;;
;; To use:
;;
;; Add something like this to your .emacs file:
;;
;; (add-to-list 'load-path "~/src/capnproto/highlighting/emacs")
;; (require 'capnp-mode)
;;
;;; Code:
;; command to comment/uncomment text
(defun capnp-comment-dwim (arg)
"Comment or uncomment current line or region in a smart way.
For detail, see `comment-dwim' for ARG explanation."
(interactive "*P")
(require 'newcomment)
(let (
(comment-start "#") (comment-end ""))
(comment-dwim arg)))
(defvar capnp--syntax-table
(let ((syn-table (make-syntax-table)))
;; bash style comment: “# …”
(modify-syntax-entry ?# "< b" syn-table)
(modify-syntax-entry ?\n "> b" syn-table)
syn-table)
"Syntax table for `capnp-mode'.")
(defvar capnp--keywords
'("struct" "enum" "interface" "union" "import"
"using" "const" "annotation" "extends" "in"
"of" "on" "as" "with" "from" "fixed")
"Keywords in `capnp-mode'.")
(defvar capnp--types
'("union" "group" "Void" "Bool" "Int8" "Int16"
"Int32" "Int64" "UInt8" "UInt16" "UInt32"
"UInt64" "Float32" "Float64" "Text" "Data"
"AnyPointer" "AnyStruct" "Capability" "List")
"Types in `capnp-mode'.")
(defvar capnp--font-lock-keywords
`(
(,(regexp-opt capnp--keywords 'words) . font-lock-keyword-face)
(,(regexp-opt capnp--types 'words) . font-lock-type-face)
("@\\w+" . font-lock-constant-face))
"Font lock definitions in `capnp-mode'.")
;;;###autoload
(define-derived-mode capnp-mode prog-mode
"capn-mode is a major mode for editing capnp protocol files"
:syntax-table capnp--syntax-table
(setq font-lock-defaults '((capnp--font-lock-keywords)))
(setq mode-name "capnp")
(define-key capnp-mode-map [remap comment-dwim] 'capnp-comment-dwim))
;;;###autoload
(add-to-list 'auto-mode-alist '("\\.capnp\\'" . capnp-mode))
(provide 'capnp-mode)
;;; capnp-mode.el ends here