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-rw-r--r--lib/tools/emacs/Makefile1
-rw-r--r--lib/tools/emacs/erlang-edoc.el172
-rw-r--r--lib/tools/emacs/erlang-start.el1
-rw-r--r--lib/tools/emacs/erlang.el5
4 files changed, 179 insertions, 0 deletions
diff --git a/lib/tools/emacs/Makefile b/lib/tools/emacs/Makefile
index 585425e5f1..e1b195ef97 100644
--- a/lib/tools/emacs/Makefile
+++ b/lib/tools/emacs/Makefile
@@ -43,6 +43,7 @@ EMACS_FILES= \
erlang_appwiz \
erlang-start \
erlang-eunit \
+ erlang-edoc \
erlang-flymake \
erlang
diff --git a/lib/tools/emacs/erlang-edoc.el b/lib/tools/emacs/erlang-edoc.el
new file mode 100644
index 0000000000..034036ad04
--- /dev/null
+++ b/lib/tools/emacs/erlang-edoc.el
@@ -0,0 +1,172 @@
+;;; erlang-edoc.el --- EDoc support for Erlang mode -*- lexical-binding: t; -*-
+
+;; %CopyrightBegin%
+;;
+;; Copyright Ericsson AB 1996-2016. All Rights Reserved.
+;;
+;; Licensed under the Apache License, Version 2.0 (the "License");
+;; you may not use this file except in compliance with the License.
+;; You may obtain a copy of the License at
+;;
+;; http://www.apache.org/licenses/LICENSE-2.0
+;;
+;; Unless required by applicable law or agreed to in writing, software
+;; distributed under the License is distributed on an "AS IS" BASIS,
+;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+;; See the License for the specific language governing permissions and
+;; limitations under the License.
+;;
+;; %CopyrightEnd%
+
+;;; Commentary:
+
+;; Ref: http://www.erlang.org/doc/apps/edoc/users_guide.html
+;;
+;; To use: (add-hook 'erlang-mode-hook 'erlang-edoc-mode)
+
+;;; Code:
+
+(defcustom erlang-edoc-indent-level 2
+ "Indentation level of xhtml in Erlang edoc."
+ :safe 'integerp
+ :group 'erlang)
+
+(defvar erlang-edoc-generic-tags
+ '("clear" "docfile" "end" "headerfile" "todo" "TODO" "type")
+ "Tags that can be used anywhere within a module.")
+
+(defvar erlang-edoc-overview-tags
+ '("author" "copyright" "reference" "see" "since" "title" "version")
+ "Tags that can be used in an overview file.")
+
+(defvar erlang-edoc-module-tags
+ '("author" "copyright" "deprecated" "doc" "hidden" "private" "reference"
+ "see" "since" "version")
+ "Tags that can be used before a module declaration.")
+
+(defvar erlang-edoc-function-tags
+ '("deprecated" "doc" "equiv" "hidden" "private" "see" "since" "spec"
+ "throws" "type")
+ "Tags that can be used before a function definition.")
+
+(defvar erlang-edoc-predefined-macros
+ '("date" "docRoot" "link" "module" "package" "section" "time"
+ "type" "version"))
+
+(defface erlang-edoc-tag '((t (:inherit font-lock-constant-face)))
+ "Face used to highlight edoc tags."
+ :group 'erlang)
+
+(defface erlang-edoc-macro '((t (:inherit font-lock-preprocessor-face)))
+ "Face used to highlight edoc macros."
+ :group 'erlang)
+
+(defface erlang-edoc-verbatim
+ '((t (:family "Monospace" :inherit font-lock-keyword-face)))
+ "Face used to highlight verbatim text."
+ :group 'erlang)
+
+(defface erlang-edoc-todo '((t (:inherit font-lock-warning-face)))
+ "Face used to highlight edoc macros."
+ :group 'erlang)
+
+(defface erlang-edoc-heading '((t (:inherit bold)))
+ "Face used to highlight edoc headings."
+ :group 'erlang)
+
+(defvar erlang-edoc-font-lock-keywords
+ '(("^%+\\s-*\\(@\\w+\\)\\_>" 1 'erlang-edoc-tag prepend)
+ ("^%+\\s-*" ("{\\(@\\w+\\)\\_>" nil nil (1 'erlang-edoc-macro prepend)))
+ ("^%+\\s-*" ("\\(?:@@\\)*\\(@[@{}]\\)" nil nil (1 'escape-glyph prepend)))
+ ("^%+\\s-*@\\(deprecated\\)\\_>" 1 font-lock-warning-face prepend)
+ ;; http://www.erlang.org/doc/apps/edoc/chapter.html#Wiki_notation
+ ("^%+\\s-*" ("[^`]`\\([^`]?\\|[^`].*?[^']\\)'"
+ (forward-char -1) nil (1 'erlang-edoc-verbatim prepend)))
+ ("^%+\\s-*" ("\\[\\(\\(?:https?\\|file\\|ftp\\)://[^][]+\\)\\]"
+ nil nil (1 'link prepend)))
+ ("^%+\\s-*\\(?:\\(?1:@todo\\|@TODO\\)\\_>\\|\\(?1:TODO\\):\\)"
+ 1 'erlang-edoc-todo prepend)
+ ("^%+\\s-*\\(\\(=\\{2,4\\}\\)[^=\n].*[^=\n]\\2\\)\\s-*$"
+ 1 'erlang-edoc-heading prepend)))
+
+(defun erlang-edoc-xml-context ()
+ "Parse edoc x(ht)ml context at comment start of current line."
+ (eval-and-compile (require 'xmltok))
+ (save-excursion
+ (beginning-of-line)
+ (when (looking-at "^%+\\s-*")
+ (let ((pt (match-end 0)) context)
+ (forward-comment (- (point)))
+ (while (< (point) pt)
+ (xmltok-forward)
+ (cond ((eq xmltok-type 'start-tag)
+ (push (cons xmltok-type xmltok-start) context))
+ ((eq xmltok-type 'end-tag)
+ (pop context))))
+ (goto-char pt)
+ (xmltok-forward)
+ (push (car (memq xmltok-type '(start-tag end-tag))) context)
+ context))))
+
+(defun erlang-edoc-indent-line ()
+ (let ((context (erlang-edoc-xml-context)))
+ (when context
+ (save-excursion
+ (beginning-of-line)
+ (re-search-forward "^%+\\s-*" (line-end-position))
+ (when (or (car context) (cadr context))
+ (let ((pad (when (cadr context)
+ (save-excursion
+ (goto-char (cdr (cadr context)))
+ (- (current-column)
+ (progn
+ (beginning-of-line)
+ (skip-chars-forward "%")
+ (current-column)))))))
+ (just-one-space (cond ((not pad) 1)
+ ((eq (car context) 'end-tag) pad)
+ (t (+ erlang-edoc-indent-level pad)))))))
+ (when (looking-back "^%*\\s-*" (line-beginning-position))
+ (re-search-forward "\\=%*\\s-*")))))
+
+(defun erlang-edoc-before-module-declaration-p ()
+ (save-excursion
+ (beginning-of-line)
+ (forward-comment (point-max))
+ (or (eobp) (re-search-forward "^-module\\s-*(" nil t))))
+
+(defun erlang-edoc-completion-at-point ()
+ (when (eq (syntax-ppss-context (syntax-ppss)) 'comment)
+ (save-excursion
+ (skip-syntax-backward "w_")
+ (when (= (preceding-char) ?@)
+ (let* ((is-tag (looking-back "^%+\\s-*@" (line-beginning-position)))
+ (beg (point))
+ (end (progn (skip-syntax-forward "w_") (point)))
+ (table (cond
+ ((not is-tag)
+ erlang-edoc-predefined-macros)
+ ((erlang-edoc-before-module-declaration-p)
+ (append erlang-edoc-module-tags
+ erlang-edoc-generic-tags))
+ (t (append erlang-edoc-function-tags
+ erlang-edoc-generic-tags)))))
+ (list beg end table))))))
+
+;;;###autoload
+(define-minor-mode erlang-edoc-mode nil
+ :lighter " EDoc"
+ (cond (erlang-edoc-mode
+ (add-hook 'erlang-indent-line-hook #'erlang-edoc-indent-line nil t)
+ (font-lock-add-keywords nil erlang-edoc-font-lock-keywords t)
+ (add-hook 'completion-at-point-functions
+ #'erlang-edoc-completion-at-point nil t))
+ (t
+ (remove-hook 'erlang-indent-line-hook #'erlang-edoc-indent-line t)
+ (font-lock-remove-keywords nil erlang-edoc-font-lock-keywords)
+ (remove-hook 'completion-at-point-functions
+ #'erlang-edoc-completion-at-point t)))
+ (jit-lock-refontify))
+
+(provide 'erlang-edoc)
+;;; erlang-edoc.el ends here
diff --git a/lib/tools/emacs/erlang-start.el b/lib/tools/emacs/erlang-start.el
index 76e0575e68..f9a6d24b2c 100644
--- a/lib/tools/emacs/erlang-start.el
+++ b/lib/tools/emacs/erlang-start.el
@@ -78,6 +78,7 @@
(autoload 'erlang-find-tag-other-window "erlang"
"Like `find-tag-other-window'. Capable of retreiving Erlang modules.")
+(autoload 'erlang-edoc-mode "erlang-edoc" "Toggle Erlang-Edoc mode on or off." t)
;;
;; Associate files extensions ".erl" and ".hrl" with Erlang mode.
diff --git a/lib/tools/emacs/erlang.el b/lib/tools/emacs/erlang.el
index 788de75b3a..67e88bac30 100644
--- a/lib/tools/emacs/erlang.el
+++ b/lib/tools/emacs/erlang.el
@@ -78,6 +78,10 @@
;; Variables:
+(defgroup erlang nil
+ "The Erlang programming language."
+ :group 'languages)
+
(defconst erlang-version "2.7"
"The version number of Erlang mode.")
@@ -2444,6 +2448,7 @@ Return the amount the indentation changed by."
;; after the indentation. Else stay at same point in text.
(if (> (- (point-max) pos) (point))
(goto-char (- (point-max) pos)))
+ (run-hooks 'erlang-indent-line-hook)
shift-amt))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 14:11:25 +0000