-
Notifications
You must be signed in to change notification settings - Fork 70
/
Copy pathscala-mode.el
186 lines (159 loc) · 6.64 KB
/
scala-mode.el
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
180
181
182
183
184
185
186
;;; scala-mode.el --- Major mode for editing Scala
;; Copyright (c) 2012 Heikki Vesalainen
;; Homepage: https://github.com/hvesalai/emacs-scala-mode
;; Keywords: languages
;; Package-Version: 0.23
;; Package-Requires: ()
;;; Commentary:
;;
;;; Code:
(require 'scala-mode-lib)
(require 'scala-mode-syntax)
(require 'scala-mode-paragraph)
(require 'scala-mode-indent)
(require 'scala-mode-fontlock)
(require 'scala-mode-map)
(require 'scala-mode-imenu)
(require 'scala-mode-prettify-symbols)
(defvar fixup-whitespace) ;; for compilation
(defvar delete-indentation) ;; for compilation
;; Tested only for emacs 24
(unless (<= 24 emacs-major-version)
(error
(format "The Scala mode has been tested only on Emacs version 24.2 (and not your Emacs version %s.%s)"
emacs-major-version emacs-minor-version)))
(defgroup scala nil
"A programming mode for the Scala language 2 and 3"
:group 'languages)
(defmacro scala-mode:make-local-variables (&rest quoted-names)
(cons 'progn (mapcar #'(lambda (quoted-name) `(make-local-variable ,quoted-name)) quoted-names)))
(defun scala-mode:find-tag ()
"Determine default tag to search for, based on text at point.
If there is no plausible default, return nil."
(let (from to)
(when (and (progn
;; Look at text around `point'.
(save-excursion
(if (< 0 (skip-chars-backward scala-syntax:opchar-group))
(if (= (char-before) ?_)
(skip-syntax-backward "w_"))
(skip-syntax-backward "w_"))
(setq from (point)))
(save-excursion
(skip-syntax-forward "w_.") (setq to (point)))
(save-excursion
(ignore-errors (scala-syntax:backward-sexp)) (setq from (max from (point))))
(save-excursion
(goto-char from)
(ignore-errors (scala-syntax:forward-sexp)) (setq to (min to (point))))
(> to from))
(save-excursion
(goto-char from)
(and (looking-at scala-syntax:id-re)
(not (looking-at scala-syntax:keywords-unsafe-re)))))
(buffer-substring-no-properties from to))))
(defun scala-mode:forward-sexp-function (&optional count)
(unless count (setq count 1))
(if (< count 0)
(dotimes (n (abs count))
(scala-syntax:backward-sexp))
(dotimes (n count)
(scala-syntax:forward-sexp))))
;;;###autoload
(defun scala-mode:set-scala-syntax-mode ()
"Sets the syntax-table and other related variables for the current buffer to those of scala-mode. Can be used to make some other major mode (such as sbt-mode) use scala syntax-table."
(set-syntax-table scala-syntax:syntax-table)
(scala-mode:make-local-variables
'syntax-propertize-function
'parse-sexp-lookup-properties
'forward-sexp-function)
(add-hook 'syntax-propertize-extend-region-functions
'scala-syntax:propertize-extend-region)
(setq syntax-propertize-function 'scala-syntax:propertize
parse-sexp-lookup-properties t
forward-sexp-function 'scala-mode:forward-sexp-function))
;;;###autoload
(defun scala-mode:goto-start-of-code ()
"Go to the start of the real code in the file.
Object, class, trait, enum, def, val, or given."
(interactive)
(let* ((case-fold-search nil))
(search-forward-regexp "\\([[:space:]]+\\|^\\)\\(class\\|enum\\|object\\|trait\\|def\\|val\\|given\\)" nil t)
(move-beginning-of-line nil)))
;;;###autoload
(define-derived-mode scala-mode prog-mode "Scala"
"Major mode for editing Scala code.
When started, runs `scala-mode-hook'.
\\{scala-mode-map}"
:syntax-table scala-syntax:syntax-table
; :group
; :abbrev
(scala-mode:make-local-variables
'post-self-insert-hook
'syntax-propertize-function
'font-lock-syntactic-face-function
'font-lock-defaults
'paragraph-start
'paragraph-separate
'parse-sexp-lookup-properties
'fill-paragraph-function
'adaptive-fill-function
'adaptive-fill-regexp
'adaptive-fill-first-line-regexp
'comment-start
'comment-end
'comment-start-skip
'comment-column
'comment-multi-line
'forward-sexp-function
'find-tag-default-function
'indent-line-function
'fixup-whitespace
'delete-indentation
'indent-tabs-mode
'imenu-create-index-function
'beginning-of-defun-function
'end-of-defun-function)
(add-hook 'syntax-propertize-extend-region-functions
'scala-syntax:propertize-extend-region)
(setq scala-mode:debug-messages nil
syntax-propertize-function 'scala-syntax:propertize
parse-sexp-lookup-properties t
;; TODO: font-lock
font-lock-defaults '(scala-font-lock:keywords
nil)
font-lock-syntactic-face-function 'scala-font-lock:syntactic-face-function
;; TODO: beginning-of-defun-function, end-of-defun-function
;; comments
paragraph-start scala-paragraph:paragraph-start-re
paragraph-separate scala-paragraph:paragraph-separate-re
fill-paragraph-function 'scala-paragraph:fill-paragraph
adaptive-fill-function 'scala-paragraph:fill-function
adaptive-fill-regexp "[ \t]*\\(//+[ \t]*\\)*"
adaptive-fill-first-line-regexp scala-paragraph:fill-first-line-re
comment-start "// "
comment-end ""
comment-start-skip "\\(//+\\|/\\*+\\)[ \t]*"
comment-column 0
comment-multi-line t
forward-sexp-function 'scala-mode:forward-sexp-function
find-tag-default-function 'scala-mode:find-tag
indent-line-function 'scala-indent:indent-line
fixup-whitespace 'scala-indent:fixup-whitespace
delete-indentation 'scala-indent:join-line
indent-tabs-mode nil
beginning-of-defun-function #'scala-syntax:beginning-of-definition
end-of-defun-function #'scala-syntax:end-of-definition
imenu-create-index-function #'scala-imenu:create-imenu-index)
(use-local-map scala-mode-map)
;; add indent functionality to some characters
(scala-mode-map:add-remove-indent-hook)
(scala-mode-map:add-self-insert-hooks))
;; Attach .scala files to the scala-mode
;;;###autoload
(progn
(add-to-list 'auto-mode-alist
'("\\.\\(scala\\|sbt\\|worksheet\\.sc\\)\\'" . scala-mode))
(modify-coding-system-alist 'file "\\.\\(scala\\|sbt\\|worksheet\\.sc\\)\\'" 'utf-8))
(provide 'scala-mode)
;;; scala-mode.el ends here