blob: ea1e263faf3c494b41130aed1fefcec112b5c446 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
;;; 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."
:type '(integer)
: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" "doc" "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" "param" "private" "returns"
"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)
;; Local variables:
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; erlang-edoc.el ends here
|
