-
-
Notifications
You must be signed in to change notification settings - Fork 5.5k
/
julia-mode.el
206 lines (185 loc) · 6.82 KB
/
julia-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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
;
; Emacs mode for Julia
;
(defvar julia-mode-hook nil)
(add-to-list 'auto-mode-alist '("\\.j\\'\\|\\.jl\\'" . julia-mode))
(defvar julia-mode-syntax-table
(let ((table (make-syntax-table)))
(modify-syntax-entry ?_ "w" table) ; underscores in words
(modify-syntax-entry ?@ "w" table)
(modify-syntax-entry ?# "<" table) ; # single-line comment start
(modify-syntax-entry ?\n ">" table) ; \n single-line comment end
(modify-syntax-entry ?\{ "(} " table)
(modify-syntax-entry ?\} "){ " table)
(modify-syntax-entry ?\[ "(] " table)
(modify-syntax-entry ?\] ")[ " table)
(modify-syntax-entry ?\( "() " table)
(modify-syntax-entry ?\) ")( " table)
(modify-syntax-entry ?\\ "." table) ; \ is an operator outside quotes
(modify-syntax-entry ?' "w" table) ; character quote, ignored for now
(modify-syntax-entry ?? "." table)
(modify-syntax-entry ?$ "." table)
(modify-syntax-entry ?& "." table)
(modify-syntax-entry ?* "." table)
(modify-syntax-entry ?+ "." table)
(modify-syntax-entry ?- "." table)
(modify-syntax-entry ?< "." table)
(modify-syntax-entry ?> "." table)
(modify-syntax-entry ?= "." table)
(modify-syntax-entry ?% "." table)
table)
"Syntax table for julia-mode")
; syntax table that holds within strings (uses default emacs behavior)
(defvar julia-mode-string-syntax-table
(let ((table (make-syntax-table)))
table)
"Syntax table for julia-mode")
(defconst julia-font-lock-keywords
(list '("\\<\\(true\\|false\\|\\|Uint\\(8\\|16\\|32\\|64\\)\\|Int\\(8\\|16\\|32\\|64\\)\\|Float\\|Float32\\|Float64\\|Complex128\\|Complex64\\|ComplexNum\\|Bool\\|Char\\|Number\\|Scalar\\|Real\\|Int\\|Uint\\|Tensor\\|Array\\|DArray\\|SparseMatrixCSC\\|Tuple\\|NTuple\\|Buffer\\|Size\\|Index\\|Symbol\\|Function\\|Vector\\|Matrix\\|Union\\|Type\\|Any\\|Complex\\|None\\|String\\|Ptr\\|Void\\|Exception\\|PtrInt\\|Long\\|Ulong\\)\\>" .
font-lock-type-face)
(cons
(concat "\\<\\("
(mapconcat
'identity
'("if" "else" "elseif" "while" "for" "begin" "end" "quote"
"try" "catch" "return" "local" "abstract" "function" "macro"
"typealias" "break" "continue" "type" "global" "@\\w+"
"module" "import" "export" "const" "let" "bitstype")
"\\|") "\\)\\>")
'font-lock-keyword-face)
'("\\\\\\s-*\".*?\"" . font-lock-string-face)))
(defconst julia-block-start-keywords
(list "if" "while" "for" "begin" "try" "function" "type" "let" "macro"
"quote"))
(defconst julia-block-other-keywords
(list "else" "elseif"))
(defconst julia-block-end-keywords
(list "end" "else" "elseif" "catch"))
(defun member (item lst)
(if (null lst)
nil
(or (equal item (car lst))
(member item (cdr lst)))))
; TODO: skip keywords inside strings
(defun in-comment ()
(equal (char-after (+ (line-beginning-position) (current-indentation)))
?#))
(defun at-keyword (kw-list)
; not a keyword if used as a field name, X.word, or quoted, :word
(and (or (= (point) 1)
(and (not (equal (char-before (point)) ?.))
(not (equal (char-before (point)) ?:))))
(not (in-comment))
(member (current-word) kw-list)))
; get the position of the last open block
(defun last-open-block-pos (min)
(let ((count 0))
(while (not (or (> count 0) (<= (point) min)))
(backward-word 1)
(setq count
(cond ((at-keyword julia-block-start-keywords)
(+ count 1))
((and (equal (current-word) "end")
(not (in-comment)))
(- count 1))
(t count))))
(if (> count 0)
(point)
nil)))
; get indent for last open block
(defun last-open-block (min)
(let ((pos (last-open-block-pos min)))
(and pos
(progn
(goto-char pos)
(+ 4 (current-indentation))))))
; return indent implied by a special form opening on the previous line, if any
(defun form-indent ()
(forward-line -1)
(end-of-line)
(backward-sexp)
(if (at-keyword julia-block-other-keywords)
(+ 4 (current-indentation))
(if (char-equal (char-after (point)) ?\()
(progn
(backward-word 1)
(let ((cur (current-indentation)))
(if (at-keyword julia-block-start-keywords)
(+ 4 cur)
nil)))
nil)))
;(defun far-back ()
; (max (point-min) (- (point) 2000)))
(defmacro error2nil (body) `(condition-case nil ,body (error nil)))
(defun paren-indent ()
(let* ((p (parse-partial-sexp (save-excursion
;; only indent by paren if the last open
;; paren is closer than the last open
;; block
(or (last-open-block-pos (point-min))
(point-min)))
(progn (beginning-of-line)
(point))))
(pos (cadr p)))
(if (or (= 0 (car p)) (null pos))
nil
(progn (goto-char pos) (+ 1 (current-column))))))
; (forward-line -1)
; (end-of-line)
; (let ((pos (condition-case nil
; (scan-lists (point) -1 1)
; (error nil))))
; (if pos
; (progn (goto-char pos) (+ 1 (current-column)))
; nil)))
(defun julia-indent-line ()
"Indent current line of julia code"
(interactive)
; (save-excursion
(end-of-line)
(indent-line-to
(or (save-excursion (error2nil (form-indent)))
(save-excursion (error2nil (paren-indent)))
(save-excursion
(let ((endtok (progn
(beginning-of-line)
(forward-to-indentation 0)
(at-keyword julia-block-end-keywords))))
(error2nil (+ (last-open-block (point-min))
(if endtok -4 0)))))
;; previous line ends in =
(save-excursion
(if (and (not (equal (point-min) (line-beginning-position)))
(progn
(forward-line -1)
(end-of-line) (backward-char 1)
(equal (char-after (point)) ?=)))
(+ 4 (current-indentation))
nil))
;; take same indentation as previous line
(save-excursion (forward-line -1)
(current-indentation))
0))
(when (at-keyword julia-block-end-keywords)
(forward-word 1)))
(defun julia-mode ()
"Major mode for editing julia code"
(interactive)
(kill-all-local-variables)
(set-syntax-table julia-mode-syntax-table)
(set (make-local-variable 'comment-start) "# ")
(set (make-local-variable 'comment-start-skip) "#+\\s-*")
(set (make-local-variable 'font-lock-defaults) '(julia-font-lock-keywords))
; (set (make-local-variable 'font-lock-syntactic-keywords)
; (list
; (list "\\(\\\\\\)\\s-*\".*?\"" 1 julia-mode-char-syntax-table)))
(set (make-local-variable 'font-lock-syntactic-keywords)
(list
(list "\\(\"\\(.\\|\\s-\\)*?[^\\\\]\"\\|\"\"\\)" 0
julia-mode-string-syntax-table)))
(set (make-local-variable 'indent-line-function) 'julia-indent-line)
(setq indent-tabs-mode nil)
(setq major-mode 'julia-mode)
(setq mode-name "julia")
(run-hooks 'julia-mode-hook))
(provide 'julia-mode)