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;;; faceup-test-mode.el --- Dummy major mode for testing `faceup'. -*- lexical-binding:t -*-
;; Copyright (C) 2014-2022 Free Software Foundation, Inc.
;; Author: Anders Lindgren
;; Keywords: languages, faces
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Dummy major-mode for testing `faceup', a regression test system for
;; font-lock keywords (syntax highlighting rules for Emacs).
;;
;; This mode use `syntax-propertize' to set the `syntax-table'
;; property on "<" and ">" in "<TEXT>" to make them act like
;; parentheses.
;;
;; This mode also sets the `help-echo' property on the text WARNING,
;; the effect is that Emacs displays a tooltip when you move your
;; mouse on to the text.
;;; Code:
(defvar faceup-test-mode-syntax-table
(make-syntax-table)
"Syntax table for `faceup-test-mode'.")
(defvar faceup-test-font-lock-keywords
'(("\\_<WARNING\\_>"
(0 (progn
(add-text-properties (match-beginning 0)
(match-end 0)
'(help-echo "Balloon tip: Fly smoothly!"))
font-lock-warning-face))))
"Highlight rules for `faceup-test-mode'.")
(defun faceup-test-syntax-propertize (start end)
(goto-char start)
(funcall
(syntax-propertize-rules
("\\(<\\)\\([^<>\n]*\\)\\(>\\)"
(1 "() ")
(3 ")( ")))
start end))
(defmacro faceup-test-define-prog-mode (mode name &rest args)
"Define a major mode for a programming language.
If `prog-mode' is defined, inherit from it."
(declare (indent defun))
`(define-derived-mode
,mode ,(and (fboundp 'prog-mode) 'prog-mode)
,name ,@args))
(faceup-test-define-prog-mode faceup-test-mode "faceup-test"
"Dummy major mode for testing `faceup', a test system for font-lock."
(setq-local syntax-propertize-function
#'faceup-test-syntax-propertize)
(setq font-lock-defaults '(faceup-test-font-lock-keywords nil)))
(provide 'faceup-test-mode)
;;; faceup-test-mode.el ends here
|
