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c7fbbc3c CY |
1 | ;;; ruby-mode.el --- Major mode for editing Ruby files |
2 | ||
acaf905b | 3 | ;; Copyright (C) 1994-2012 Free Software Foundation, Inc. |
c7fbbc3c | 4 | |
c5220417 GM |
5 | ;; Authors: Yukihiro Matsumoto |
6 | ;; Nobuyoshi Nakada | |
c7fbbc3c CY |
7 | ;; URL: http://www.emacswiki.org/cgi-bin/wiki/RubyMode |
8 | ;; Created: Fri Feb 4 14:49:13 JST 1994 | |
9 | ;; Keywords: languages ruby | |
10 | ;; Version: 1.0 | |
11 | ||
12 | ;; This file is part of GNU Emacs. | |
13 | ||
14 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
15 | ;; it under the terms of the GNU General Public License as published by | |
16 | ;; the Free Software Foundation, either version 3 of the License, or | |
17 | ;; (at your option) any later version. | |
18 | ||
19 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
20 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | ;; GNU General Public License for more details. | |
23 | ||
24 | ;; You should have received a copy of the GNU General Public License | |
25 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
26 | ||
27 | ;;; Commentary: | |
28 | ||
29 | ;; Provides font-locking, indentation support, and navigation for Ruby code. | |
30 | ;; | |
31 | ;; If you're installing manually, you should add this to your .emacs | |
32 | ;; file after putting it on your load path: | |
33 | ;; | |
34 | ;; (autoload 'ruby-mode "ruby-mode" "Major mode for ruby files" t) | |
35 | ;; (add-to-list 'auto-mode-alist '("\\.rb$" . ruby-mode)) | |
36 | ;; (add-to-list 'interpreter-mode-alist '("ruby" . ruby-mode)) | |
37 | ;; | |
38 | ;; Still needs more docstrings; search below for TODO. | |
39 | ||
40 | ;;; Code: | |
41 | ||
42 | (eval-when-compile (require 'cl)) | |
43 | ||
44a41a47 KR |
44 | (defgroup ruby nil |
45 | "Major mode for editing Ruby code." | |
46 | :prefix "ruby-" | |
47 | :group 'languages) | |
48 | ||
c7fbbc3c CY |
49 | (defconst ruby-keyword-end-re |
50 | (if (string-match "\\_>" "ruby") | |
51 | "\\_>" | |
52 | "\\>")) | |
53 | ||
54 | (defconst ruby-block-beg-keywords | |
55 | '("class" "module" "def" "if" "unless" "case" "while" "until" "for" "begin" "do") | |
56 | "Keywords at the beginning of blocks.") | |
57 | ||
58 | (defconst ruby-block-beg-re | |
59 | (regexp-opt ruby-block-beg-keywords) | |
60 | "Regexp to match the beginning of blocks.") | |
61 | ||
62 | (defconst ruby-non-block-do-re | |
63 | (concat (regexp-opt '("while" "until" "for" "rescue") t) ruby-keyword-end-re) | |
64 | "Regexp to match keywords that nest without blocks.") | |
65 | ||
66 | (defconst ruby-indent-beg-re | |
67 | (concat "\\(\\s *" (regexp-opt '("class" "module" "def") t) "\\)\\|" | |
68 | (regexp-opt '("if" "unless" "case" "while" "until" "for" "begin"))) | |
69 | "Regexp to match where the indentation gets deeper.") | |
70 | ||
71 | (defconst ruby-modifier-beg-keywords | |
72 | '("if" "unless" "while" "until") | |
73 | "Modifiers that are the same as the beginning of blocks.") | |
74 | ||
75 | (defconst ruby-modifier-beg-re | |
76 | (regexp-opt ruby-modifier-beg-keywords) | |
77 | "Regexp to match modifiers same as the beginning of blocks.") | |
78 | ||
79 | (defconst ruby-modifier-re | |
80 | (regexp-opt (cons "rescue" ruby-modifier-beg-keywords)) | |
81 | "Regexp to match modifiers.") | |
82 | ||
83 | (defconst ruby-block-mid-keywords | |
84 | '("then" "else" "elsif" "when" "rescue" "ensure") | |
85 | "Keywords where the indentation gets shallower in middle of block statements.") | |
86 | ||
87 | (defconst ruby-block-mid-re | |
88 | (regexp-opt ruby-block-mid-keywords) | |
89 | "Regexp to match where the indentation gets shallower in middle of block statements.") | |
90 | ||
91 | (defconst ruby-block-op-keywords | |
92 | '("and" "or" "not") | |
93 | "Regexp to match boolean keywords.") | |
94 | ||
95 | (defconst ruby-block-hanging-re | |
96 | (regexp-opt (append ruby-modifier-beg-keywords ruby-block-op-keywords)) | |
97 | "Regexp to match hanging block modifiers.") | |
98 | ||
39675016 | 99 | (defconst ruby-block-end-re "\\_<end\\_>") |
c7fbbc3c | 100 | |
cf38dd42 SM |
101 | (eval-and-compile |
102 | (defconst ruby-here-doc-beg-re | |
c7fbbc3c | 103 | "\\(<\\)<\\(-\\)?\\(\\([a-zA-Z0-9_]+\\)\\|[\"]\\([^\"]+\\)[\"]\\|[']\\([^']+\\)[']\\)" |
cf38dd42 | 104 | "Regexp to match the beginning of a heredoc.")) |
c7fbbc3c CY |
105 | |
106 | (defun ruby-here-doc-end-match () | |
107 | "Return a regexp to find the end of a heredoc. | |
108 | ||
109 | This should only be called after matching against `ruby-here-doc-beg-re'." | |
110 | (concat "^" | |
111 | (if (match-string 2) "[ \t]*" nil) | |
112 | (regexp-quote | |
113 | (or (match-string 4) | |
114 | (match-string 5) | |
115 | (match-string 6))))) | |
116 | ||
c7fbbc3c | 117 | (defconst ruby-delimiter |
39675016 | 118 | (concat "[?$/%(){}#\"'`.:]\\|<<\\|\\[\\|\\]\\|\\_<\\(" |
c7fbbc3c | 119 | ruby-block-beg-re |
39675016 | 120 | "\\)\\_>\\|" ruby-block-end-re |
c7fbbc3c CY |
121 | "\\|^=begin\\|" ruby-here-doc-beg-re)) |
122 | ||
123 | (defconst ruby-negative | |
124 | (concat "^[ \t]*\\(\\(" ruby-block-mid-re "\\)\\>\\|" | |
125 | ruby-block-end-re "\\|}\\|\\]\\)") | |
126 | "Regexp to match where the indentation gets shallower.") | |
127 | ||
128 | (defconst ruby-operator-re "[-,.+*/%&|^~=<>:]" | |
129 | "Regexp to match operators.") | |
130 | ||
131 | (defconst ruby-symbol-chars "a-zA-Z0-9_" | |
132 | "List of characters that symbol names may contain.") | |
133 | (defconst ruby-symbol-re (concat "[" ruby-symbol-chars "]") | |
134 | "Regexp to match symbols.") | |
135 | ||
2122161f | 136 | (define-abbrev-table 'ruby-mode-abbrev-table () |
ee61fe97 | 137 | "Abbrev table in use in Ruby mode buffers.") |
c7fbbc3c | 138 | |
c7fbbc3c CY |
139 | (defvar ruby-mode-map |
140 | (let ((map (make-sparse-keymap))) | |
141 | (define-key map "{" 'ruby-electric-brace) | |
142 | (define-key map "}" 'ruby-electric-brace) | |
143 | (define-key map (kbd "M-C-a") 'ruby-beginning-of-defun) | |
144 | (define-key map (kbd "M-C-e") 'ruby-end-of-defun) | |
145 | (define-key map (kbd "M-C-b") 'ruby-backward-sexp) | |
146 | (define-key map (kbd "M-C-f") 'ruby-forward-sexp) | |
147 | (define-key map (kbd "M-C-p") 'ruby-beginning-of-block) | |
148 | (define-key map (kbd "M-C-n") 'ruby-end-of-block) | |
149 | (define-key map (kbd "M-C-h") 'ruby-mark-defun) | |
150 | (define-key map (kbd "M-C-q") 'ruby-indent-exp) | |
c7fbbc3c CY |
151 | (define-key map (kbd "C-M-h") 'backward-kill-word) |
152 | (define-key map (kbd "C-j") 'reindent-then-newline-and-indent) | |
153 | (define-key map (kbd "C-m") 'newline) | |
cc9c9831 | 154 | (define-key map (kbd "C-c C-c") 'comment-region) |
c7fbbc3c | 155 | map) |
ee61fe97 | 156 | "Keymap used in Ruby mode.") |
c7fbbc3c CY |
157 | |
158 | (defvar ruby-mode-syntax-table | |
159 | (let ((table (make-syntax-table))) | |
160 | (modify-syntax-entry ?\' "\"" table) | |
161 | (modify-syntax-entry ?\" "\"" table) | |
162 | (modify-syntax-entry ?\` "\"" table) | |
163 | (modify-syntax-entry ?# "<" table) | |
164 | (modify-syntax-entry ?\n ">" table) | |
165 | (modify-syntax-entry ?\\ "\\" table) | |
166 | (modify-syntax-entry ?$ "." table) | |
167 | (modify-syntax-entry ?? "_" table) | |
168 | (modify-syntax-entry ?_ "_" table) | |
39675016 | 169 | (modify-syntax-entry ?: "_" table) |
c7fbbc3c CY |
170 | (modify-syntax-entry ?< "." table) |
171 | (modify-syntax-entry ?> "." table) | |
172 | (modify-syntax-entry ?& "." table) | |
173 | (modify-syntax-entry ?| "." table) | |
174 | (modify-syntax-entry ?% "." table) | |
175 | (modify-syntax-entry ?= "." table) | |
176 | (modify-syntax-entry ?/ "." table) | |
177 | (modify-syntax-entry ?+ "." table) | |
178 | (modify-syntax-entry ?* "." table) | |
179 | (modify-syntax-entry ?- "." table) | |
180 | (modify-syntax-entry ?\; "." table) | |
181 | (modify-syntax-entry ?\( "()" table) | |
182 | (modify-syntax-entry ?\) ")(" table) | |
183 | (modify-syntax-entry ?\{ "(}" table) | |
184 | (modify-syntax-entry ?\} "){" table) | |
185 | (modify-syntax-entry ?\[ "(]" table) | |
186 | (modify-syntax-entry ?\] ")[" table) | |
187 | table) | |
ee61fe97 | 188 | "Syntax table to use in Ruby mode.") |
c7fbbc3c CY |
189 | |
190 | (defcustom ruby-indent-tabs-mode nil | |
ee61fe97 | 191 | "Indentation can insert tabs in Ruby mode if this is non-nil." |
c7fbbc3c CY |
192 | :type 'boolean :group 'ruby) |
193 | ||
194 | (defcustom ruby-indent-level 2 | |
ee61fe97 | 195 | "Indentation of Ruby statements." |
c7fbbc3c CY |
196 | :type 'integer :group 'ruby) |
197 | ||
198 | (defcustom ruby-comment-column 32 | |
199 | "Indentation column of comments." | |
200 | :type 'integer :group 'ruby) | |
201 | ||
202 | (defcustom ruby-deep-arglist t | |
203 | "Deep indent lists in parenthesis when non-nil. | |
204 | Also ignores spaces after parenthesis when 'space." | |
205 | :group 'ruby) | |
206 | ||
207 | (defcustom ruby-deep-indent-paren '(?\( ?\[ ?\] t) | |
ee61fe97 JB |
208 | "Deep indent lists in parenthesis when non-nil. |
209 | The value t means continuous line. | |
c7fbbc3c CY |
210 | Also ignores spaces after parenthesis when 'space." |
211 | :group 'ruby) | |
212 | ||
213 | (defcustom ruby-deep-indent-paren-style 'space | |
214 | "Default deep indent style." | |
215 | :options '(t nil space) :group 'ruby) | |
216 | ||
217 | (defcustom ruby-encoding-map '((shift_jis . cp932) (shift-jis . cp932)) | |
218 | "Alist to map encoding name from Emacs to Ruby." | |
219 | :group 'ruby) | |
220 | ||
221 | (defcustom ruby-insert-encoding-magic-comment t | |
ee61fe97 | 222 | "Insert a magic Emacs 'coding' comment upon save if this is non-nil." |
c7fbbc3c CY |
223 | :type 'boolean :group 'ruby) |
224 | ||
225 | (defcustom ruby-use-encoding-map t | |
226 | "Use `ruby-encoding-map' to set encoding magic comment if this is non-nil." | |
227 | :type 'boolean :group 'ruby) | |
228 | ||
229 | ;; Safe file variables | |
230 | (put 'ruby-indent-tabs-mode 'safe-local-variable 'booleanp) | |
231 | (put 'ruby-indent-level 'safe-local-variable 'integerp) | |
232 | (put 'ruby-comment-column 'safe-local-variable 'integerp) | |
233 | (put 'ruby-deep-arglist 'safe-local-variable 'booleanp) | |
234 | ||
235 | (defun ruby-imenu-create-index-in-block (prefix beg end) | |
236 | "Create an imenu index of methods inside a block." | |
237 | (let ((index-alist '()) (case-fold-search nil) | |
238 | name next pos decl sing) | |
239 | (goto-char beg) | |
240 | (while (re-search-forward "^\\s *\\(\\(class\\s +\\|\\(class\\s *<<\\s *\\)\\|module\\s +\\)\\([^\(<\n ]+\\)\\|\\(def\\|alias\\)\\s +\\([^\(\n ]+\\)\\)" end t) | |
241 | (setq sing (match-beginning 3)) | |
242 | (setq decl (match-string 5)) | |
243 | (setq next (match-end 0)) | |
244 | (setq name (or (match-string 4) (match-string 6))) | |
245 | (setq pos (match-beginning 0)) | |
246 | (cond | |
247 | ((string= "alias" decl) | |
248 | (if prefix (setq name (concat prefix name))) | |
249 | (push (cons name pos) index-alist)) | |
250 | ((string= "def" decl) | |
251 | (if prefix | |
252 | (setq name | |
253 | (cond | |
254 | ((string-match "^self\." name) | |
255 | (concat (substring prefix 0 -1) (substring name 4))) | |
256 | (t (concat prefix name))))) | |
257 | (push (cons name pos) index-alist) | |
258 | (ruby-accurate-end-of-block end)) | |
259 | (t | |
260 | (if (string= "self" name) | |
261 | (if prefix (setq name (substring prefix 0 -1))) | |
262 | (if prefix (setq name (concat (substring prefix 0 -1) "::" name))) | |
263 | (push (cons name pos) index-alist)) | |
264 | (ruby-accurate-end-of-block end) | |
265 | (setq beg (point)) | |
266 | (setq index-alist | |
267 | (nconc (ruby-imenu-create-index-in-block | |
268 | (concat name (if sing "." "#")) | |
269 | next beg) index-alist)) | |
270 | (goto-char beg)))) | |
271 | index-alist)) | |
272 | ||
273 | (defun ruby-imenu-create-index () | |
274 | "Create an imenu index of all methods in the buffer." | |
275 | (nreverse (ruby-imenu-create-index-in-block nil (point-min) nil))) | |
276 | ||
277 | (defun ruby-accurate-end-of-block (&optional end) | |
278 | "TODO: document." | |
279 | (let (state | |
280 | (end (or end (point-max)))) | |
281 | (while (and (setq state (apply 'ruby-parse-partial end state)) | |
282 | (>= (nth 2 state) 0) (< (point) end))))) | |
283 | ||
284 | (defun ruby-mode-variables () | |
ee61fe97 | 285 | "Set up initial buffer-local variables for Ruby mode." |
c7fbbc3c CY |
286 | (set-syntax-table ruby-mode-syntax-table) |
287 | (setq local-abbrev-table ruby-mode-abbrev-table) | |
288 | (setq indent-tabs-mode ruby-indent-tabs-mode) | |
289 | (set (make-local-variable 'indent-line-function) 'ruby-indent-line) | |
290 | (set (make-local-variable 'require-final-newline) t) | |
291 | (set (make-local-variable 'comment-start) "# ") | |
292 | (set (make-local-variable 'comment-end) "") | |
293 | (set (make-local-variable 'comment-column) ruby-comment-column) | |
294 | (set (make-local-variable 'comment-start-skip) "#+ *") | |
295 | (set (make-local-variable 'parse-sexp-ignore-comments) t) | |
296 | (set (make-local-variable 'parse-sexp-lookup-properties) t) | |
297 | (set (make-local-variable 'paragraph-start) (concat "$\\|" page-delimiter)) | |
298 | (set (make-local-variable 'paragraph-separate) paragraph-start) | |
299 | (set (make-local-variable 'paragraph-ignore-fill-prefix) t)) | |
300 | ||
301 | (defun ruby-mode-set-encoding () | |
302 | "Insert a magic comment header with the proper encoding if necessary." | |
303 | (save-excursion | |
304 | (widen) | |
305 | (goto-char (point-min)) | |
306 | (when (re-search-forward "[^\0-\177]" nil t) | |
307 | (goto-char (point-min)) | |
308 | (let ((coding-system | |
309 | (or coding-system-for-write | |
310 | buffer-file-coding-system))) | |
311 | (if coding-system | |
312 | (setq coding-system | |
313 | (or (coding-system-get coding-system 'mime-charset) | |
314 | (coding-system-change-eol-conversion coding-system nil)))) | |
315 | (setq coding-system | |
316 | (if coding-system | |
317 | (symbol-name | |
318 | (or (and ruby-use-encoding-map | |
319 | (cdr (assq coding-system ruby-encoding-map))) | |
320 | coding-system)) | |
321 | "ascii-8bit")) | |
cc9c9831 | 322 | (if (looking-at "^#!") (beginning-of-line 2)) |
c7fbbc3c CY |
323 | (cond ((looking-at "\\s *#.*-\*-\\s *\\(en\\)?coding\\s *:\\s *\\([-a-z0-9_]*\\)\\s *\\(;\\|-\*-\\)") |
324 | (unless (string= (match-string 2) coding-system) | |
325 | (goto-char (match-beginning 2)) | |
326 | (delete-region (point) (match-end 2)) | |
327 | (and (looking-at "-\*-") | |
328 | (let ((n (skip-chars-backward " "))) | |
329 | (cond ((= n 0) (insert " ") (backward-char)) | |
330 | ((= n -1) (insert " ")) | |
331 | ((forward-char))))) | |
332 | (insert coding-system))) | |
333 | ((looking-at "\\s *#.*coding\\s *[:=]")) | |
334 | (t (when ruby-insert-encoding-magic-comment | |
335 | (insert "# -*- coding: " coding-system " -*-\n")))))))) | |
336 | ||
337 | (defun ruby-current-indentation () | |
338 | "Return the indentation level of current line." | |
339 | (save-excursion | |
340 | (beginning-of-line) | |
341 | (back-to-indentation) | |
342 | (current-column))) | |
343 | ||
cf38dd42 | 344 | (defun ruby-indent-line (&optional ignored) |
ee61fe97 | 345 | "Correct the indentation of the current Ruby line." |
c7fbbc3c CY |
346 | (interactive) |
347 | (ruby-indent-to (ruby-calculate-indent))) | |
348 | ||
349 | (defun ruby-indent-to (column) | |
350 | "Indent the current line to COLUMN." | |
351 | (when column | |
352 | (let (shift top beg) | |
353 | (and (< column 0) (error "invalid nest")) | |
354 | (setq shift (current-column)) | |
355 | (beginning-of-line) | |
356 | (setq beg (point)) | |
357 | (back-to-indentation) | |
358 | (setq top (current-column)) | |
359 | (skip-chars-backward " \t") | |
360 | (if (>= shift top) (setq shift (- shift top)) | |
361 | (setq shift 0)) | |
362 | (if (and (bolp) | |
363 | (= column top)) | |
364 | (move-to-column (+ column shift)) | |
365 | (move-to-column top) | |
366 | (delete-region beg (point)) | |
367 | (beginning-of-line) | |
368 | (indent-to column) | |
369 | (move-to-column (+ column shift)))))) | |
370 | ||
371 | (defun ruby-special-char-p (&optional pos) | |
372 | "Return t if the character before POS is a special character. | |
373 | If omitted, POS defaults to the current point. | |
374 | Special characters are `?', `$', `:' when preceded by whitespace, | |
375 | and `\\' when preceded by `?'." | |
376 | (setq pos (or pos (point))) | |
377 | (let ((c (char-before pos)) (b (and (< (point-min) pos) | |
378 | (char-before (1- pos))))) | |
379 | (cond ((or (eq c ??) (eq c ?$))) | |
380 | ((and (eq c ?:) (or (not b) (eq (char-syntax b) ? )))) | |
381 | ((eq c ?\\) (eq b ??))))) | |
382 | ||
383 | (defun ruby-expr-beg (&optional option) | |
384 | "TODO: document." | |
385 | (save-excursion | |
386 | (store-match-data nil) | |
cf38dd42 | 387 | (let ((space (skip-chars-backward " \t"))) |
c7fbbc3c CY |
388 | (cond |
389 | ((bolp) t) | |
390 | ((progn | |
391 | (forward-char -1) | |
392 | (and (looking-at "\\?") | |
393 | (or (eq (char-syntax (char-before (point))) ?w) | |
394 | (ruby-special-char-p)))) | |
395 | nil) | |
396 | ((and (eq option 'heredoc) (< space 0)) t) | |
397 | ((or (looking-at ruby-operator-re) | |
398 | (looking-at "[\\[({,;]") | |
399 | (and (looking-at "[!?]") | |
400 | (or (not (eq option 'modifier)) | |
401 | (bolp) | |
402 | (save-excursion (forward-char -1) (looking-at "\\Sw$")))) | |
403 | (and (looking-at ruby-symbol-re) | |
404 | (skip-chars-backward ruby-symbol-chars) | |
405 | (cond | |
406 | ((looking-at (regexp-opt | |
407 | (append ruby-block-beg-keywords | |
408 | ruby-block-op-keywords | |
409 | ruby-block-mid-keywords) | |
410 | 'words)) | |
411 | (goto-char (match-end 0)) | |
412 | (not (looking-at "\\s_"))) | |
413 | ((eq option 'expr-qstr) | |
414 | (looking-at "[a-zA-Z][a-zA-z0-9_]* +%[^ \t]")) | |
415 | ((eq option 'expr-re) | |
416 | (looking-at "[a-zA-Z][a-zA-z0-9_]* +/[^ \t]")) | |
417 | (t nil))))))))) | |
418 | ||
419 | (defun ruby-forward-string (term &optional end no-error expand) | |
420 | "TODO: document." | |
421 | (let ((n 1) (c (string-to-char term)) | |
422 | (re (if expand | |
423 | (concat "[^\\]\\(\\\\\\\\\\)*\\([" term "]\\|\\(#{\\)\\)") | |
424 | (concat "[^\\]\\(\\\\\\\\\\)*[" term "]")))) | |
425 | (while (and (re-search-forward re end no-error) | |
426 | (if (match-beginning 3) | |
427 | (ruby-forward-string "}{" end no-error nil) | |
428 | (> (setq n (if (eq (char-before (point)) c) | |
429 | (1- n) (1+ n))) 0))) | |
430 | (forward-char -1)) | |
431 | (cond ((zerop n)) | |
432 | (no-error nil) | |
433 | ((error "unterminated string"))))) | |
434 | ||
435 | (defun ruby-deep-indent-paren-p (c) | |
ee61fe97 | 436 | "TODO: document." |
c7fbbc3c CY |
437 | (cond ((listp ruby-deep-indent-paren) |
438 | (let ((deep (assoc c ruby-deep-indent-paren))) | |
439 | (cond (deep | |
440 | (or (cdr deep) ruby-deep-indent-paren-style)) | |
441 | ((memq c ruby-deep-indent-paren) | |
442 | ruby-deep-indent-paren-style)))) | |
443 | ((eq c ruby-deep-indent-paren) ruby-deep-indent-paren-style) | |
444 | ((eq c ?\( ) ruby-deep-arglist))) | |
445 | ||
446 | (defun ruby-parse-partial (&optional end in-string nest depth pcol indent) | |
ee61fe97 | 447 | "TODO: document throughout function body." |
c7fbbc3c CY |
448 | (or depth (setq depth 0)) |
449 | (or indent (setq indent 0)) | |
450 | (when (re-search-forward ruby-delimiter end 'move) | |
451 | (let ((pnt (point)) w re expand) | |
452 | (goto-char (match-beginning 0)) | |
453 | (cond | |
454 | ((and (memq (char-before) '(?@ ?$)) (looking-at "\\sw")) | |
455 | (goto-char pnt)) | |
456 | ((looking-at "[\"`]") ;skip string | |
457 | (cond | |
458 | ((and (not (eobp)) | |
459 | (ruby-forward-string (buffer-substring (point) (1+ (point))) end t t)) | |
460 | nil) | |
461 | (t | |
462 | (setq in-string (point)) | |
463 | (goto-char end)))) | |
464 | ((looking-at "'") | |
465 | (cond | |
466 | ((and (not (eobp)) | |
467 | (re-search-forward "[^\\]\\(\\\\\\\\\\)*'" end t)) | |
468 | nil) | |
469 | (t | |
470 | (setq in-string (point)) | |
471 | (goto-char end)))) | |
472 | ((looking-at "/=") | |
473 | (goto-char pnt)) | |
474 | ((looking-at "/") | |
475 | (cond | |
476 | ((and (not (eobp)) (ruby-expr-beg 'expr-re)) | |
477 | (if (ruby-forward-string "/" end t t) | |
478 | nil | |
479 | (setq in-string (point)) | |
480 | (goto-char end))) | |
481 | (t | |
482 | (goto-char pnt)))) | |
483 | ((looking-at "%") | |
484 | (cond | |
485 | ((and (not (eobp)) | |
486 | (ruby-expr-beg 'expr-qstr) | |
487 | (not (looking-at "%=")) | |
488 | (looking-at "%[QqrxWw]?\\([^a-zA-Z0-9 \t\n]\\)")) | |
489 | (goto-char (match-beginning 1)) | |
490 | (setq expand (not (memq (char-before) '(?q ?w)))) | |
491 | (setq w (match-string 1)) | |
492 | (cond | |
493 | ((string= w "[") (setq re "][")) | |
494 | ((string= w "{") (setq re "}{")) | |
495 | ((string= w "(") (setq re ")(")) | |
496 | ((string= w "<") (setq re "><")) | |
497 | ((and expand (string= w "\\")) | |
498 | (setq w (concat "\\" w)))) | |
499 | (unless (cond (re (ruby-forward-string re end t expand)) | |
500 | (expand (ruby-forward-string w end t t)) | |
501 | (t (re-search-forward | |
502 | (if (string= w "\\") | |
503 | "\\\\[^\\]*\\\\" | |
504 | (concat "[^\\]\\(\\\\\\\\\\)*" w)) | |
505 | end t))) | |
506 | (setq in-string (point)) | |
507 | (goto-char end))) | |
508 | (t | |
509 | (goto-char pnt)))) | |
510 | ((looking-at "\\?") ;skip ?char | |
511 | (cond | |
512 | ((and (ruby-expr-beg) | |
513 | (looking-at "?\\(\\\\C-\\|\\\\M-\\)*\\\\?.")) | |
514 | (goto-char (match-end 0))) | |
515 | (t | |
516 | (goto-char pnt)))) | |
517 | ((looking-at "\\$") ;skip $char | |
518 | (goto-char pnt) | |
519 | (forward-char 1)) | |
520 | ((looking-at "#") ;skip comment | |
521 | (forward-line 1) | |
522 | (goto-char (point)) | |
523 | ) | |
524 | ((looking-at "[\\[{(]") | |
525 | (let ((deep (ruby-deep-indent-paren-p (char-after)))) | |
526 | (if (and deep (or (not (eq (char-after) ?\{)) (ruby-expr-beg))) | |
527 | (progn | |
528 | (and (eq deep 'space) (looking-at ".\\s +[^# \t\n]") | |
529 | (setq pnt (1- (match-end 0)))) | |
530 | (setq nest (cons (cons (char-after (point)) pnt) nest)) | |
531 | (setq pcol (cons (cons pnt depth) pcol)) | |
532 | (setq depth 0)) | |
533 | (setq nest (cons (cons (char-after (point)) pnt) nest)) | |
534 | (setq depth (1+ depth)))) | |
535 | (goto-char pnt) | |
536 | ) | |
537 | ((looking-at "[])}]") | |
538 | (if (ruby-deep-indent-paren-p (matching-paren (char-after))) | |
539 | (setq depth (cdr (car pcol)) pcol (cdr pcol)) | |
540 | (setq depth (1- depth))) | |
541 | (setq nest (cdr nest)) | |
542 | (goto-char pnt)) | |
543 | ((looking-at ruby-block-end-re) | |
544 | (if (or (and (not (bolp)) | |
545 | (progn | |
546 | (forward-char -1) | |
547 | (setq w (char-after (point))) | |
548 | (or (eq ?_ w) | |
549 | (eq ?. w)))) | |
550 | (progn | |
551 | (goto-char pnt) | |
552 | (setq w (char-after (point))) | |
553 | (or (eq ?_ w) | |
554 | (eq ?! w) | |
555 | (eq ?? w)))) | |
556 | nil | |
557 | (setq nest (cdr nest)) | |
558 | (setq depth (1- depth))) | |
559 | (goto-char pnt)) | |
560 | ((looking-at "def\\s +[^(\n;]*") | |
561 | (if (or (bolp) | |
562 | (progn | |
563 | (forward-char -1) | |
564 | (not (eq ?_ (char-after (point)))))) | |
565 | (progn | |
566 | (setq nest (cons (cons nil pnt) nest)) | |
567 | (setq depth (1+ depth)))) | |
568 | (goto-char (match-end 0))) | |
39675016 | 569 | ((looking-at (concat "\\_<\\(" ruby-block-beg-re "\\)\\_>")) |
c7fbbc3c CY |
570 | (and |
571 | (save-match-data | |
572 | (or (not (looking-at (concat "do" ruby-keyword-end-re))) | |
573 | (save-excursion | |
574 | (back-to-indentation) | |
575 | (not (looking-at ruby-non-block-do-re))))) | |
576 | (or (bolp) | |
577 | (progn | |
578 | (forward-char -1) | |
579 | (setq w (char-after (point))) | |
580 | (not (or (eq ?_ w) | |
581 | (eq ?. w))))) | |
582 | (goto-char pnt) | |
583 | (setq w (char-after (point))) | |
584 | (not (eq ?_ w)) | |
585 | (not (eq ?! w)) | |
586 | (not (eq ?? w)) | |
587 | (skip-chars-forward " \t") | |
588 | (goto-char (match-beginning 0)) | |
589 | (or (not (looking-at ruby-modifier-re)) | |
590 | (ruby-expr-beg 'modifier)) | |
591 | (goto-char pnt) | |
592 | (setq nest (cons (cons nil pnt) nest)) | |
593 | (setq depth (1+ depth))) | |
594 | (goto-char pnt)) | |
595 | ((looking-at ":\\(['\"]\\)") | |
596 | (goto-char (match-beginning 1)) | |
597 | (ruby-forward-string (buffer-substring (match-beginning 1) (match-end 1)) end)) | |
11473529 | 598 | ((looking-at ":\\([-,.+*/%&|^~<>]=?\\|===?\\|<=>\\|![~=]?\\)") |
c7fbbc3c CY |
599 | (goto-char (match-end 0))) |
600 | ((looking-at ":\\([a-zA-Z_][a-zA-Z_0-9]*[!?=]?\\)?") | |
601 | (goto-char (match-end 0))) | |
602 | ((or (looking-at "\\.\\.\\.?") | |
603 | (looking-at "\\.[0-9]+") | |
604 | (looking-at "\\.[a-zA-Z_0-9]+") | |
605 | (looking-at "\\.")) | |
606 | (goto-char (match-end 0))) | |
607 | ((looking-at "^=begin") | |
608 | (if (re-search-forward "^=end" end t) | |
609 | (forward-line 1) | |
610 | (setq in-string (match-end 0)) | |
611 | (goto-char end))) | |
612 | ((looking-at "<<") | |
613 | (cond | |
614 | ((and (ruby-expr-beg 'heredoc) | |
615 | (looking-at "<<\\(-\\)?\\(\\([\"'`]\\)\\([^\n]+?\\)\\3\\|\\(?:\\sw\\|\\s_\\)+\\)")) | |
616 | (setq re (regexp-quote (or (match-string 4) (match-string 2)))) | |
617 | (if (match-beginning 1) (setq re (concat "\\s *" re))) | |
618 | (let* ((id-end (goto-char (match-end 0))) | |
e180ab9f | 619 | (line-end-position (point-at-eol)) |
c7fbbc3c CY |
620 | (state (list in-string nest depth pcol indent))) |
621 | ;; parse the rest of the line | |
622 | (while (and (> line-end-position (point)) | |
623 | (setq state (apply 'ruby-parse-partial | |
624 | line-end-position state)))) | |
625 | (setq in-string (car state) | |
626 | nest (nth 1 state) | |
627 | depth (nth 2 state) | |
628 | pcol (nth 3 state) | |
629 | indent (nth 4 state)) | |
630 | ;; skip heredoc section | |
631 | (if (re-search-forward (concat "^" re "$") end 'move) | |
632 | (forward-line 1) | |
633 | (setq in-string id-end) | |
634 | (goto-char end)))) | |
635 | (t | |
636 | (goto-char pnt)))) | |
637 | ((looking-at "^__END__$") | |
638 | (goto-char pnt)) | |
639 | ((and (looking-at ruby-here-doc-beg-re) | |
640 | (boundp 'ruby-indent-point)) | |
641 | (if (re-search-forward (ruby-here-doc-end-match) | |
642 | ruby-indent-point t) | |
643 | (forward-line 1) | |
644 | (setq in-string (match-end 0)) | |
645 | (goto-char ruby-indent-point))) | |
646 | (t | |
647 | (error (format "bad string %s" | |
648 | (buffer-substring (point) pnt) | |
649 | )))))) | |
650 | (list in-string nest depth pcol)) | |
651 | ||
652 | (defun ruby-parse-region (start end) | |
653 | "TODO: document." | |
654 | (let (state) | |
655 | (save-excursion | |
656 | (if start | |
657 | (goto-char start) | |
658 | (ruby-beginning-of-indent)) | |
659 | (save-restriction | |
660 | (narrow-to-region (point) end) | |
661 | (while (and (> end (point)) | |
662 | (setq state (apply 'ruby-parse-partial end state)))))) | |
663 | (list (nth 0 state) ; in-string | |
664 | (car (nth 1 state)) ; nest | |
665 | (nth 2 state) ; depth | |
666 | (car (car (nth 3 state))) ; pcol | |
667 | ;(car (nth 5 state)) ; indent | |
668 | ))) | |
669 | ||
670 | (defun ruby-indent-size (pos nest) | |
ee61fe97 | 671 | "Return the indentation level in spaces NEST levels deeper than POS." |
c7fbbc3c CY |
672 | (+ pos (* (or nest 1) ruby-indent-level))) |
673 | ||
674 | (defun ruby-calculate-indent (&optional parse-start) | |
ee61fe97 | 675 | "Return the proper indentation level of the current line." |
c7fbbc3c CY |
676 | ;; TODO: Document body |
677 | (save-excursion | |
678 | (beginning-of-line) | |
679 | (let ((ruby-indent-point (point)) | |
680 | (case-fold-search nil) | |
cf38dd42 | 681 | state eol begin op-end |
c7fbbc3c CY |
682 | (paren (progn (skip-syntax-forward " ") |
683 | (and (char-after) (matching-paren (char-after))))) | |
684 | (indent 0)) | |
685 | (if parse-start | |
686 | (goto-char parse-start) | |
687 | (ruby-beginning-of-indent) | |
688 | (setq parse-start (point))) | |
689 | (back-to-indentation) | |
690 | (setq indent (current-column)) | |
691 | (setq state (ruby-parse-region parse-start ruby-indent-point)) | |
692 | (cond | |
693 | ((nth 0 state) ; within string | |
694 | (setq indent nil)) ; do nothing | |
695 | ((car (nth 1 state)) ; in paren | |
696 | (goto-char (setq begin (cdr (nth 1 state)))) | |
697 | (let ((deep (ruby-deep-indent-paren-p (car (nth 1 state))))) | |
698 | (if deep | |
699 | (cond ((and (eq deep t) (eq (car (nth 1 state)) paren)) | |
700 | (skip-syntax-backward " ") | |
701 | (setq indent (1- (current-column)))) | |
702 | ((let ((s (ruby-parse-region (point) ruby-indent-point))) | |
703 | (and (nth 2 s) (> (nth 2 s) 0) | |
704 | (or (goto-char (cdr (nth 1 s))) t))) | |
705 | (forward-word -1) | |
706 | (setq indent (ruby-indent-size (current-column) | |
707 | (nth 2 state)))) | |
708 | (t | |
709 | (setq indent (current-column)) | |
710 | (cond ((eq deep 'space)) | |
711 | (paren (setq indent (1- indent))) | |
712 | (t (setq indent (ruby-indent-size (1- indent) 1)))))) | |
713 | (if (nth 3 state) (goto-char (nth 3 state)) | |
714 | (goto-char parse-start) (back-to-indentation)) | |
715 | (setq indent (ruby-indent-size (current-column) (nth 2 state)))) | |
716 | (and (eq (car (nth 1 state)) paren) | |
717 | (ruby-deep-indent-paren-p (matching-paren paren)) | |
718 | (search-backward (char-to-string paren)) | |
719 | (setq indent (current-column))))) | |
720 | ((and (nth 2 state) (> (nth 2 state) 0)) ; in nest | |
721 | (if (null (cdr (nth 1 state))) | |
722 | (error "invalid nest")) | |
723 | (goto-char (cdr (nth 1 state))) | |
724 | (forward-word -1) ; skip back a keyword | |
725 | (setq begin (point)) | |
726 | (cond | |
727 | ((looking-at "do\\>[^_]") ; iter block is a special case | |
728 | (if (nth 3 state) (goto-char (nth 3 state)) | |
729 | (goto-char parse-start) (back-to-indentation)) | |
730 | (setq indent (ruby-indent-size (current-column) (nth 2 state)))) | |
731 | (t | |
732 | (setq indent (+ (current-column) ruby-indent-level))))) | |
ee61fe97 | 733 | |
c7fbbc3c CY |
734 | ((and (nth 2 state) (< (nth 2 state) 0)) ; in negative nest |
735 | (setq indent (ruby-indent-size (current-column) (nth 2 state))))) | |
736 | (when indent | |
737 | (goto-char ruby-indent-point) | |
738 | (end-of-line) | |
739 | (setq eol (point)) | |
740 | (beginning-of-line) | |
741 | (cond | |
742 | ((and (not (ruby-deep-indent-paren-p paren)) | |
743 | (re-search-forward ruby-negative eol t)) | |
744 | (and (not (eq ?_ (char-after (match-end 0)))) | |
745 | (setq indent (- indent ruby-indent-level)))) | |
746 | ((and | |
747 | (save-excursion | |
748 | (beginning-of-line) | |
749 | (not (bobp))) | |
750 | (or (ruby-deep-indent-paren-p t) | |
751 | (null (car (nth 1 state))))) | |
752 | ;; goto beginning of non-empty no-comment line | |
753 | (let (end done) | |
754 | (while (not done) | |
755 | (skip-chars-backward " \t\n") | |
756 | (setq end (point)) | |
757 | (beginning-of-line) | |
758 | (if (re-search-forward "^\\s *#" end t) | |
759 | (beginning-of-line) | |
760 | (setq done t)))) | |
c7fbbc3c CY |
761 | (end-of-line) |
762 | ;; skip the comment at the end | |
763 | (skip-chars-backward " \t") | |
764 | (let (end (pos (point))) | |
765 | (beginning-of-line) | |
766 | (while (and (re-search-forward "#" pos t) | |
767 | (setq end (1- (point))) | |
768 | (or (ruby-special-char-p end) | |
769 | (and (setq state (ruby-parse-region parse-start end)) | |
770 | (nth 0 state)))) | |
771 | (setq end nil)) | |
772 | (goto-char (or end pos)) | |
773 | (skip-chars-backward " \t") | |
774 | (setq begin (if (and end (nth 0 state)) pos (cdr (nth 1 state)))) | |
775 | (setq state (ruby-parse-region parse-start (point)))) | |
776 | (or (bobp) (forward-char -1)) | |
777 | (and | |
778 | (or (and (looking-at ruby-symbol-re) | |
779 | (skip-chars-backward ruby-symbol-chars) | |
780 | (looking-at (concat "\\<\\(" ruby-block-hanging-re "\\)\\>")) | |
781 | (not (eq (point) (nth 3 state))) | |
782 | (save-excursion | |
783 | (goto-char (match-end 0)) | |
784 | (not (looking-at "[a-z_]")))) | |
785 | (and (looking-at ruby-operator-re) | |
786 | (not (ruby-special-char-p)) | |
787 | ;; operator at the end of line | |
788 | (let ((c (char-after (point)))) | |
789 | (and | |
790 | ;; (or (null begin) | |
791 | ;; (save-excursion | |
792 | ;; (goto-char begin) | |
793 | ;; (skip-chars-forward " \t") | |
794 | ;; (not (or (eolp) (looking-at "#") | |
795 | ;; (and (eq (car (nth 1 state)) ?{) | |
796 | ;; (looking-at "|")))))) | |
797 | (or (not (eq ?/ c)) | |
798 | (null (nth 0 (ruby-parse-region (or begin parse-start) (point))))) | |
799 | (or (not (eq ?| (char-after (point)))) | |
800 | (save-excursion | |
801 | (or (eolp) (forward-char -1)) | |
802 | (cond | |
803 | ((search-backward "|" nil t) | |
804 | (skip-chars-backward " \t\n") | |
805 | (and (not (eolp)) | |
806 | (progn | |
807 | (forward-char -1) | |
808 | (not (looking-at "{"))) | |
809 | (progn | |
810 | (forward-word -1) | |
811 | (not (looking-at "do\\>[^_]"))))) | |
812 | (t t)))) | |
813 | (not (eq ?, c)) | |
814 | (setq op-end t))))) | |
815 | (setq indent | |
816 | (cond | |
817 | ((and | |
818 | (null op-end) | |
819 | (not (looking-at (concat "\\<\\(" ruby-block-hanging-re "\\)\\>"))) | |
820 | (eq (ruby-deep-indent-paren-p t) 'space) | |
821 | (not (bobp))) | |
822 | (widen) | |
823 | (goto-char (or begin parse-start)) | |
824 | (skip-syntax-forward " ") | |
825 | (current-column)) | |
826 | ((car (nth 1 state)) indent) | |
827 | (t | |
828 | (+ indent ruby-indent-level)))))))) | |
829 | (goto-char ruby-indent-point) | |
830 | (beginning-of-line) | |
831 | (skip-syntax-forward " ") | |
832 | (if (looking-at "\\.[^.]") | |
833 | (+ indent ruby-indent-level) | |
834 | indent)))) | |
835 | ||
836 | (defun ruby-electric-brace (arg) | |
ee61fe97 | 837 | "Insert a brace and re-indent the current line." |
c7fbbc3c CY |
838 | (interactive "P") |
839 | (self-insert-command (prefix-numeric-value arg)) | |
840 | (ruby-indent-line t)) | |
841 | ||
842 | ;; TODO: Why isn't one ruby-*-of-defun written in terms of the other? | |
843 | (defun ruby-beginning-of-defun (&optional arg) | |
844 | "Move backward to the beginning of the current top-level defun. | |
ee61fe97 | 845 | With ARG, move backward multiple defuns. Negative ARG means |
c7fbbc3c CY |
846 | move forward." |
847 | (interactive "p") | |
848 | (and (re-search-backward (concat "^\\(" ruby-block-beg-re "\\)\\b") | |
849 | nil 'move (or arg 1)) | |
850 | (beginning-of-line))) | |
851 | ||
852 | (defun ruby-end-of-defun (&optional arg) | |
853 | "Move forward to the end of the current top-level defun. | |
ee61fe97 | 854 | With ARG, move forward multiple defuns. Negative ARG means |
c7fbbc3c CY |
855 | move backward." |
856 | (interactive "p") | |
857 | (and (re-search-forward (concat "^\\(" ruby-block-end-re "\\)\\($\\|\\b[^_]\\)") | |
858 | nil 'move (or arg 1)) | |
859 | (beginning-of-line)) | |
860 | (forward-line 1)) | |
861 | ||
862 | (defun ruby-beginning-of-indent () | |
863 | "TODO: document" | |
864 | ;; I don't understand this function. | |
865 | ;; It seems like it should move to the line where indentation should deepen, | |
866 | ;; but ruby-indent-beg-re only accounts for whitespace before class, module and def, | |
867 | ;; so this will only match other block beginners at the beginning of the line. | |
39675016 | 868 | (and (re-search-backward (concat "^\\(" ruby-indent-beg-re "\\)\\_>") nil 'move) |
c7fbbc3c CY |
869 | (beginning-of-line))) |
870 | ||
871 | (defun ruby-move-to-block (n) | |
ee61fe97 | 872 | "Move to the beginning (N < 0) or the end (N > 0) of the current block |
c7fbbc3c CY |
873 | or blocks containing the current block." |
874 | ;; TODO: Make this work for n > 1, | |
875 | ;; make it not loop for n = 0, | |
876 | ;; document body | |
877 | (let (start pos done down) | |
878 | (setq start (ruby-calculate-indent)) | |
879 | (setq down (looking-at (if (< n 0) ruby-block-end-re | |
880 | (concat "\\<\\(" ruby-block-beg-re "\\)\\>")))) | |
881 | (while (and (not done) (not (if (< n 0) (bobp) (eobp)))) | |
882 | (forward-line n) | |
883 | (cond | |
884 | ((looking-at "^\\s *$")) | |
885 | ((looking-at "^\\s *#")) | |
886 | ((and (> n 0) (looking-at "^=begin\\>")) | |
887 | (re-search-forward "^=end\\>")) | |
888 | ((and (< n 0) (looking-at "^=end\\>")) | |
889 | (re-search-backward "^=begin\\>")) | |
890 | (t | |
891 | (setq pos (current-indentation)) | |
892 | (cond | |
893 | ((< start pos) | |
894 | (setq down t)) | |
895 | ((and down (= pos start)) | |
896 | (setq done t)) | |
897 | ((> start pos) | |
898 | (setq done t))))) | |
899 | (if done | |
900 | (save-excursion | |
901 | (back-to-indentation) | |
902 | (if (looking-at (concat "\\<\\(" ruby-block-mid-re "\\)\\>")) | |
903 | (setq done nil)))))) | |
904 | (back-to-indentation)) | |
905 | ||
906 | (defun ruby-beginning-of-block (&optional arg) | |
907 | "Move backward to the beginning of the current block. | |
908 | With ARG, move up multiple blocks." | |
909 | (interactive "p") | |
910 | (ruby-move-to-block (- (or arg 1)))) | |
911 | ||
912 | (defun ruby-end-of-block (&optional arg) | |
913 | "Move forward to the end of the current block. | |
914 | With ARG, move out of multiple blocks." | |
915 | ;; Passing a value > 1 to ruby-move-to-block currently doesn't work. | |
916 | (interactive) | |
917 | (ruby-move-to-block (or arg 1))) | |
918 | ||
919 | (defun ruby-forward-sexp (&optional arg) | |
920 | "Move forward across one balanced expression (sexp). | |
ee61fe97 | 921 | With ARG, do it many times. Negative ARG means move backward." |
c7fbbc3c CY |
922 | ;; TODO: Document body |
923 | (interactive "p") | |
924 | (if (and (numberp arg) (< arg 0)) | |
925 | (ruby-backward-sexp (- arg)) | |
926 | (let ((i (or arg 1))) | |
927 | (condition-case nil | |
928 | (while (> i 0) | |
929 | (skip-syntax-forward " ") | |
cc9c9831 | 930 | (if (looking-at ",\\s *") (goto-char (match-end 0))) |
c7fbbc3c CY |
931 | (cond ((looking-at "\\?\\(\\\\[CM]-\\)*\\\\?\\S ") |
932 | (goto-char (match-end 0))) | |
933 | ((progn | |
934 | (skip-chars-forward ",.:;|&^~=!?\\+\\-\\*") | |
935 | (looking-at "\\s(")) | |
936 | (goto-char (scan-sexps (point) 1))) | |
937 | ((and (looking-at (concat "\\<\\(" ruby-block-beg-re "\\)\\>")) | |
938 | (not (eq (char-before (point)) ?.)) | |
939 | (not (eq (char-before (point)) ?:))) | |
940 | (ruby-end-of-block) | |
941 | (forward-word 1)) | |
942 | ((looking-at "\\(\\$\\|@@?\\)?\\sw") | |
943 | (while (progn | |
944 | (while (progn (forward-word 1) (looking-at "_"))) | |
945 | (cond ((looking-at "::") (forward-char 2) t) | |
946 | ((> (skip-chars-forward ".") 0)) | |
947 | ((looking-at "\\?\\|!\\(=[~=>]\\|[^~=]\\)") | |
948 | (forward-char 1) nil))))) | |
949 | ((let (state expr) | |
950 | (while | |
951 | (progn | |
952 | (setq expr (or expr (ruby-expr-beg) | |
953 | (looking-at "%\\sw?\\Sw\\|[\"'`/]"))) | |
954 | (nth 1 (setq state (apply 'ruby-parse-partial nil state)))) | |
955 | (setq expr t) | |
956 | (skip-chars-forward "<")) | |
957 | (not expr)))) | |
958 | (setq i (1- i))) | |
959 | ((error) (forward-word 1))) | |
960 | i))) | |
961 | ||
962 | (defun ruby-backward-sexp (&optional arg) | |
963 | "Move backward across one balanced expression (sexp). | |
ee61fe97 | 964 | With ARG, do it many times. Negative ARG means move forward." |
c7fbbc3c CY |
965 | ;; TODO: Document body |
966 | (interactive "p") | |
967 | (if (and (numberp arg) (< arg 0)) | |
968 | (ruby-forward-sexp (- arg)) | |
969 | (let ((i (or arg 1))) | |
970 | (condition-case nil | |
971 | (while (> i 0) | |
972 | (skip-chars-backward " \t\n,.:;|&^~=!?\\+\\-\\*") | |
973 | (forward-char -1) | |
974 | (cond ((looking-at "\\s)") | |
975 | (goto-char (scan-sexps (1+ (point)) -1)) | |
976 | (case (char-before) | |
977 | (?% (forward-char -1)) | |
0adf5618 | 978 | ((?q ?Q ?w ?W ?r ?x) |
c7fbbc3c CY |
979 | (if (eq (char-before (1- (point))) ?%) (forward-char -2)))) |
980 | nil) | |
981 | ((looking-at "\\s\"\\|\\\\\\S_") | |
982 | (let ((c (char-to-string (char-before (match-end 0))))) | |
983 | (while (and (search-backward c) | |
984 | (eq (logand (skip-chars-backward "\\") 1) | |
985 | 1)))) | |
986 | nil) | |
987 | ((looking-at "\\s.\\|\\s\\") | |
988 | (if (ruby-special-char-p) (forward-char -1))) | |
989 | ((looking-at "\\s(") nil) | |
990 | (t | |
991 | (forward-char 1) | |
992 | (while (progn (forward-word -1) | |
993 | (case (char-before) | |
994 | (?_ t) | |
995 | (?. (forward-char -1) t) | |
996 | ((?$ ?@) | |
997 | (forward-char -1) | |
998 | (and (eq (char-before) (char-after)) (forward-char -1))) | |
999 | (?: | |
1000 | (forward-char -1) | |
1001 | (eq (char-before) :))))) | |
1002 | (if (looking-at ruby-block-end-re) | |
1003 | (ruby-beginning-of-block)) | |
1004 | nil)) | |
1005 | (setq i (1- i))) | |
1006 | ((error))) | |
1007 | i))) | |
1008 | ||
1009 | (defun ruby-mark-defun () | |
1010 | "Put mark at end of this Ruby function, point at beginning." | |
1011 | (interactive) | |
1012 | (push-mark (point)) | |
1013 | (ruby-end-of-defun) | |
1014 | (push-mark (point) nil t) | |
1015 | (ruby-beginning-of-defun) | |
1016 | (re-search-backward "^\n" (- (point) 1) t)) | |
1017 | ||
cf38dd42 SM |
1018 | (defun ruby-indent-exp (&optional ignored) |
1019 | "Indent each line in the balanced expression following the point." | |
c7fbbc3c CY |
1020 | (interactive "*P") |
1021 | (let ((here (point-marker)) start top column (nest t)) | |
1022 | (set-marker-insertion-type here t) | |
1023 | (unwind-protect | |
1024 | (progn | |
1025 | (beginning-of-line) | |
1026 | (setq start (point) top (current-indentation)) | |
1027 | (while (and (not (eobp)) | |
1028 | (progn | |
1029 | (setq column (ruby-calculate-indent start)) | |
1030 | (cond ((> column top) | |
1031 | (setq nest t)) | |
1032 | ((and (= column top) nest) | |
1033 | (setq nest nil) t)))) | |
1034 | (ruby-indent-to column) | |
1035 | (beginning-of-line 2))) | |
1036 | (goto-char here) | |
1037 | (set-marker here nil)))) | |
1038 | ||
1039 | (defun ruby-add-log-current-method () | |
ee61fe97 | 1040 | "Return the current method name as a string. |
c7fbbc3c CY |
1041 | This string includes all namespaces. |
1042 | ||
1043 | For example: | |
1044 | ||
1045 | #exit | |
1046 | String#gsub | |
1047 | Net::HTTP#active? | |
1048 | File::open. | |
1049 | ||
1050 | See `add-log-current-defun-function'." | |
1051 | ;; TODO: Document body | |
1052 | ;; Why does this append a period to class methods? | |
1053 | (condition-case nil | |
1054 | (save-excursion | |
1055 | (let (mname mlist (indent 0)) | |
1056 | ;; get current method (or class/module) | |
1057 | (if (re-search-backward | |
1058 | (concat "^[ \t]*\\(def\\|class\\|module\\)[ \t]+" | |
1059 | "\\(" | |
1060 | ;; \\. and :: for class method | |
1061 | "\\([A-Za-z_]" ruby-symbol-re "*\\|\\.\\|::" "\\)" | |
1062 | "+\\)") | |
1063 | nil t) | |
1064 | (progn | |
1065 | (setq mname (match-string 2)) | |
1066 | (unless (string-equal "def" (match-string 1)) | |
1067 | (setq mlist (list mname) mname nil)) | |
1068 | (goto-char (match-beginning 1)) | |
1069 | (setq indent (current-column)) | |
1070 | (beginning-of-line))) | |
1071 | ;; nest class/module | |
1072 | (while (and (> indent 0) | |
1073 | (re-search-backward | |
1074 | (concat | |
1075 | "^[ \t]*\\(class\\|module\\)[ \t]+" | |
1076 | "\\([A-Z]" ruby-symbol-re "*\\)") | |
1077 | nil t)) | |
1078 | (goto-char (match-beginning 1)) | |
1079 | (if (< (current-column) indent) | |
1080 | (progn | |
1081 | (setq mlist (cons (match-string 2) mlist)) | |
1082 | (setq indent (current-column)) | |
1083 | (beginning-of-line)))) | |
1084 | (when mname | |
1085 | (let ((mn (split-string mname "\\.\\|::"))) | |
1086 | (if (cdr mn) | |
1087 | (progn | |
1088 | (cond | |
1089 | ((string-equal "" (car mn)) | |
1090 | (setq mn (cdr mn) mlist nil)) | |
1091 | ((string-equal "self" (car mn)) | |
1092 | (setq mn (cdr mn))) | |
1093 | ((let ((ml (nreverse mlist))) | |
1094 | (while ml | |
1095 | (if (string-equal (car ml) (car mn)) | |
1096 | (setq mlist (nreverse (cdr ml)) ml nil)) | |
1097 | (or (setq ml (cdr ml)) (nreverse mlist)))))) | |
1098 | (if mlist | |
1099 | (setcdr (last mlist) mn) | |
1100 | (setq mlist mn)) | |
1101 | (setq mn (last mn 2)) | |
1102 | (setq mname (concat "." (cadr mn))) | |
1103 | (setcdr mn nil)) | |
1104 | (setq mname (concat "#" mname))))) | |
1105 | ;; generate string | |
1106 | (if (consp mlist) | |
1107 | (setq mlist (mapconcat (function identity) mlist "::"))) | |
1108 | (if mname | |
1109 | (if mlist (concat mlist mname) mname) | |
1110 | mlist))))) | |
1111 | ||
f4ff702e GM |
1112 | (declare-function ruby-syntax-propertize-heredoc "ruby-mode" (limit)) |
1113 | ||
cf38dd42 SM |
1114 | (if (eval-when-compile (fboundp #'syntax-propertize-rules)) |
1115 | ;; New code that works independently from font-lock. | |
1116 | (progn | |
1117 | (defun ruby-syntax-propertize-function (start end) | |
1118 | "Syntactic keywords for Ruby mode. See `syntax-propertize-function'." | |
1119 | (goto-char start) | |
1120 | (ruby-syntax-propertize-heredoc end) | |
1121 | (funcall | |
1122 | (syntax-propertize-rules | |
1123 | ;; #{ }, #$hoge, #@foo are not comments | |
1124 | ("\\(#\\)[{$@]" (1 ".")) | |
cf38dd42 SM |
1125 | ;; $' $" $` .... are variables |
1126 | ;; ?' ?" ?` are ascii codes | |
21bb5ce0 SM |
1127 | ("\\([?$]\\)[#\"'`]" |
1128 | (1 (unless (save-excursion | |
1129 | ;; Not within a string. | |
1130 | (nth 3 (syntax-ppss (match-beginning 0)))) | |
1131 | (string-to-syntax "\\")))) | |
cf38dd42 | 1132 | ;; regexps |
89fdaac7 | 1133 | ("\\(^\\|[[=(,~?:;<>]\\|\\(^\\|\\s \\)\\(if\\|elsif\\|unless\\|while\\|until\\|when\\|and\\|or\\|&&\\|||\\)\\|g?sub!?\\|scan\\|split!?\\)\\s *\\(/\\)[^/\n\\\\]*\\(\\\\.[^/\n\\\\]*\\)*\\(/\\)" |
cf38dd42 SM |
1134 | (4 "\"/") |
1135 | (6 "\"/")) | |
1136 | ("^=en\\(d\\)\\_>" (1 "!")) | |
1137 | ("^\\(=\\)begin\\_>" (1 "!")) | |
1138 | ;; Handle here documents. | |
1139 | ((concat ruby-here-doc-beg-re ".*\\(\n\\)") | |
1140 | (7 (prog1 "\"" (ruby-syntax-propertize-heredoc end))))) | |
1141 | (point) end)) | |
1142 | ||
1143 | (defun ruby-syntax-propertize-heredoc (limit) | |
1144 | (let ((ppss (syntax-ppss)) | |
1145 | (res '())) | |
1146 | (when (eq ?\n (nth 3 ppss)) | |
1147 | (save-excursion | |
1148 | (goto-char (nth 8 ppss)) | |
1149 | (beginning-of-line) | |
1150 | (while (re-search-forward ruby-here-doc-beg-re | |
1151 | (line-end-position) t) | |
1152 | (push (concat (ruby-here-doc-end-match) "\n") res))) | |
1153 | (let ((start (point))) | |
1154 | ;; With multiple openers on the same line, we don't know in which | |
1155 | ;; part `start' is, so we have to go back to the beginning. | |
1156 | (when (cdr res) | |
1157 | (goto-char (nth 8 ppss)) | |
1158 | (setq res (nreverse res))) | |
1159 | (while (and res (re-search-forward (pop res) limit 'move)) | |
1160 | (if (null res) | |
1161 | (put-text-property (1- (point)) (point) | |
1162 | 'syntax-table (string-to-syntax "\"")))) | |
1163 | ;; Make extra sure we don't move back, lest we could fall into an | |
1164 | ;; inf-loop. | |
1165 | (if (< (point) start) (goto-char start)))))) | |
1166 | ) | |
f4ff702e | 1167 | |
cf38dd42 SM |
1168 | ;; For Emacsen where syntax-propertize-rules is not (yet) available, |
1169 | ;; fallback on the old font-lock-syntactic-keywords stuff. | |
1170 | ||
1171 | (defconst ruby-here-doc-end-re | |
1172 | "^\\([ \t]+\\)?\\(.*\\)\\(\n\\)" | |
1173 | "Regexp to match the end of heredocs. | |
1174 | ||
1175 | This will actually match any line with one or more characters. | |
1176 | It's useful in that it divides up the match string so that | |
1177 | `ruby-here-doc-beg-match' can search for the beginning of the heredoc.") | |
1178 | ||
1179 | (defun ruby-here-doc-beg-match () | |
1180 | "Return a regexp to find the beginning of a heredoc. | |
1181 | ||
1182 | This should only be called after matching against `ruby-here-doc-end-re'." | |
06d8ace5 GM |
1183 | (let ((contents (concat |
1184 | (regexp-quote (concat (match-string 2) (match-string 3))) | |
1185 | (if (string= (match-string 3) "_") "\\B" "\\b")))) | |
cf38dd42 SM |
1186 | (concat "<<" |
1187 | (let ((match (match-string 1))) | |
1188 | (if (and match (> (length match) 0)) | |
06d8ace5 GM |
1189 | (concat "\\(?:-\\([\"']?\\)\\|\\([\"']\\)" |
1190 | (match-string 1) "\\)" | |
1191 | contents "\\(\\1\\|\\2\\)") | |
1192 | (concat "-?\\([\"']\\|\\)" contents "\\1")))))) | |
cf38dd42 SM |
1193 | |
1194 | (defconst ruby-font-lock-syntactic-keywords | |
1195 | `( ;; #{ }, #$hoge, #@foo are not comments | |
c7fbbc3c CY |
1196 | ("\\(#\\)[{$@]" 1 (1 . nil)) |
1197 | ;; the last $', $", $` in the respective string is not variable | |
1198 | ;; the last ?', ?", ?` in the respective string is not ascii code | |
1199 | ("\\(^\\|[\[ \t\n<+\(,=]\\)\\(['\"`]\\)\\(\\\\.\\|\\2\\|[^'\"`\n\\\\]\\)*?\\\\?[?$]\\(\\2\\)" | |
1200 | (2 (7 . nil)) | |
1201 | (4 (7 . nil))) | |
1202 | ;; $' $" $` .... are variables | |
1203 | ;; ?' ?" ?` are ascii codes | |
1204 | ("\\(^\\|[^\\\\]\\)\\(\\\\\\\\\\)*[?$]\\([#\"'`]\\)" 3 (1 . nil)) | |
1205 | ;; regexps | |
cc9c9831 | 1206 | ("\\(^\\|[[=(,~?:;<>]\\|\\(^\\|\\s \\)\\(if\\|elsif\\|unless\\|while\\|until\\|when\\|and\\|or\\|&&\\|||\\)\\|g?sub!?\\|scan\\|split!?\\)\\s *\\(/\\)[^/\n\\\\]*\\(\\\\.[^/\n\\\\]*\\)*\\(/\\)" |
c7fbbc3c CY |
1207 | (4 (7 . ?/)) |
1208 | (6 (7 . ?/))) | |
1209 | ("^=en\\(d\\)\\_>" 1 "!") | |
1210 | ("^\\(=\\)begin\\_>" 1 (ruby-comment-beg-syntax)) | |
1211 | ;; Currently, the following case is highlighted incorrectly: | |
1212 | ;; | |
1213 | ;; <<FOO | |
1214 | ;; FOO | |
1215 | ;; <<BAR | |
1216 | ;; <<BAZ | |
1217 | ;; BAZ | |
1218 | ;; BAR | |
1219 | ;; | |
1220 | ;; This is because all here-doc beginnings are highlighted before any endings, | |
1221 | ;; so although <<BAR is properly marked as a beginning, when we get to <<BAZ | |
1222 | ;; it thinks <<BAR is part of a string so it's marked as well. | |
1223 | ;; | |
1224 | ;; This may be fixable by modifying ruby-in-here-doc-p to use | |
1225 | ;; ruby-in-non-here-doc-string-p rather than syntax-ppss-context, | |
1226 | ;; but I don't want to try that until we've got unit tests set up | |
1227 | ;; to make sure I don't break anything else. | |
1228 | (,(concat ruby-here-doc-beg-re ".*\\(\n\\)") | |
1229 | ,(+ 1 (regexp-opt-depth ruby-here-doc-beg-re)) | |
1230 | (ruby-here-doc-beg-syntax)) | |
1231 | (,ruby-here-doc-end-re 3 (ruby-here-doc-end-syntax))) | |
94584c34 | 1232 | "Syntactic keywords for Ruby mode. See `font-lock-syntactic-keywords'.") |
cf38dd42 SM |
1233 | |
1234 | (defun ruby-comment-beg-syntax () | |
ee61fe97 | 1235 | "Return the syntax cell for a the first character of a =begin. |
c7fbbc3c CY |
1236 | See the definition of `ruby-font-lock-syntactic-keywords'. |
1237 | ||
1238 | This returns a comment-delimiter cell as long as the =begin | |
1239 | isn't in a string or another comment." | |
cf38dd42 SM |
1240 | (when (not (nth 3 (syntax-ppss))) |
1241 | (string-to-syntax "!"))) | |
1242 | ||
1243 | (defun ruby-in-here-doc-p () | |
1244 | "Return whether or not the point is in a heredoc." | |
1245 | (save-excursion | |
1246 | (let ((old-point (point)) (case-fold-search nil)) | |
1247 | (beginning-of-line) | |
1248 | (catch 'found-beg | |
1249 | (while (re-search-backward ruby-here-doc-beg-re nil t) | |
1250 | (if (not (or (ruby-in-ppss-context-p 'anything) | |
1251 | (ruby-here-doc-find-end old-point))) | |
1252 | (throw 'found-beg t))))))) | |
1253 | ||
1254 | (defun ruby-here-doc-find-end (&optional limit) | |
1255 | "Expects the point to be on a line with one or more heredoc openers. | |
1256 | Returns the buffer position at which all heredocs on the line | |
1257 | are terminated, or nil if they aren't terminated before the | |
1258 | buffer position `limit' or the end of the buffer." | |
1259 | (save-excursion | |
1260 | (beginning-of-line) | |
1261 | (catch 'done | |
e180ab9f | 1262 | (let ((eol (point-at-eol)) |
cf38dd42 SM |
1263 | (case-fold-search nil) |
1264 | ;; Fake match data such that (match-end 0) is at eol | |
1265 | (end-match-data (progn (looking-at ".*$") (match-data))) | |
1266 | beg-match-data end-re) | |
1267 | (while (re-search-forward ruby-here-doc-beg-re eol t) | |
1268 | (setq beg-match-data (match-data)) | |
1269 | (setq end-re (ruby-here-doc-end-match)) | |
1270 | ||
1271 | (set-match-data end-match-data) | |
1272 | (goto-char (match-end 0)) | |
1273 | (unless (re-search-forward end-re limit t) (throw 'done nil)) | |
1274 | (setq end-match-data (match-data)) | |
1275 | ||
1276 | (set-match-data beg-match-data) | |
1277 | (goto-char (match-end 0))) | |
1278 | (set-match-data end-match-data) | |
1279 | (goto-char (match-end 0)) | |
1280 | (point))))) | |
1281 | ||
1282 | (defun ruby-here-doc-beg-syntax () | |
1283 | "Return the syntax cell for a line that may begin a heredoc. | |
1284 | See the definition of `ruby-font-lock-syntactic-keywords'. | |
1285 | ||
1286 | This sets the syntax cell for the newline ending the line | |
1287 | containing the heredoc beginning so that cases where multiple | |
1288 | heredocs are started on one line are handled correctly." | |
1289 | (save-excursion | |
1290 | (goto-char (match-beginning 0)) | |
1291 | (unless (or (ruby-in-ppss-context-p 'non-heredoc) | |
1292 | (ruby-in-here-doc-p)) | |
1293 | (string-to-syntax "\"")))) | |
1294 | ||
1295 | (defun ruby-here-doc-end-syntax () | |
1296 | "Return the syntax cell for a line that may end a heredoc. | |
1297 | See the definition of `ruby-font-lock-syntactic-keywords'." | |
1298 | (let ((pss (syntax-ppss)) (case-fold-search nil)) | |
1299 | ;; If we aren't in a string, we definitely aren't ending a heredoc, | |
1300 | ;; so we can just give up. | |
1301 | ;; This means we aren't doing a full-document search | |
1302 | ;; every time we enter a character. | |
1303 | (when (ruby-in-ppss-context-p 'heredoc pss) | |
1304 | (save-excursion | |
1305 | (goto-char (nth 8 pss)) ; Go to the beginning of heredoc. | |
1306 | (let ((eol (point))) | |
1307 | (beginning-of-line) | |
1308 | (if (and (re-search-forward (ruby-here-doc-beg-match) eol t) ; If there is a heredoc that matches this line... | |
1309 | (not (ruby-in-ppss-context-p 'anything)) ; And that's not inside a heredoc/string/comment... | |
1310 | (progn (goto-char (match-end 0)) ; And it's the last heredoc on its line... | |
1311 | (not (re-search-forward ruby-here-doc-beg-re eol t)))) | |
1312 | (string-to-syntax "\""))))))) | |
c7fbbc3c | 1313 | |
cf38dd42 SM |
1314 | (unless (functionp 'syntax-ppss) |
1315 | (defun syntax-ppss (&optional pos) | |
1316 | (parse-partial-sexp (point-min) (or pos (point))))) | |
1317 | ) | |
c7fbbc3c CY |
1318 | |
1319 | (defun ruby-in-ppss-context-p (context &optional ppss) | |
1320 | (let ((ppss (or ppss (syntax-ppss (point))))) | |
1321 | (if (cond | |
1322 | ((eq context 'anything) | |
1323 | (or (nth 3 ppss) | |
1324 | (nth 4 ppss))) | |
1325 | ((eq context 'string) | |
1326 | (nth 3 ppss)) | |
1327 | ((eq context 'heredoc) | |
cf38dd42 | 1328 | (eq ?\n (nth 3 ppss))) |
c7fbbc3c CY |
1329 | ((eq context 'non-heredoc) |
1330 | (and (ruby-in-ppss-context-p 'anything) | |
1331 | (not (ruby-in-ppss-context-p 'heredoc)))) | |
1332 | ((eq context 'comment) | |
1333 | (nth 4 ppss)) | |
1334 | (t | |
1335 | (error (concat | |
1336 | "Internal error on `ruby-in-ppss-context-p': " | |
1337 | "context name `" (symbol-name context) "' is unknown")))) | |
1338 | t))) | |
1339 | ||
c7fbbc3c CY |
1340 | (if (featurep 'xemacs) |
1341 | (put 'ruby-mode 'font-lock-defaults | |
1342 | '((ruby-font-lock-keywords) | |
1343 | nil nil nil | |
1344 | beginning-of-line | |
1345 | (font-lock-syntactic-keywords | |
1346 | . ruby-font-lock-syntactic-keywords)))) | |
1347 | ||
1348 | (defvar ruby-font-lock-syntax-table | |
1349 | (let ((tbl (copy-syntax-table ruby-mode-syntax-table))) | |
1350 | (modify-syntax-entry ?_ "w" tbl) | |
1351 | tbl) | |
ee61fe97 | 1352 | "The syntax table to use for fontifying Ruby mode buffers. |
c7fbbc3c CY |
1353 | See `font-lock-syntax-table'.") |
1354 | ||
1355 | (defconst ruby-font-lock-keywords | |
1356 | (list | |
1357 | ;; functions | |
1358 | '("^\\s *def\\s +\\([^( \t\n]+\\)" | |
1359 | 1 font-lock-function-name-face) | |
1360 | ;; keywords | |
1361 | (cons (concat | |
1362 | "\\(^\\|[^_:.@$]\\|\\.\\.\\)\\b\\(defined\\?\\|" | |
1363 | (regexp-opt | |
1364 | '("alias_method" | |
1365 | "alias" | |
1366 | "and" | |
1367 | "begin" | |
1368 | "break" | |
1369 | "case" | |
1370 | "catch" | |
1371 | "class" | |
1372 | "def" | |
1373 | "do" | |
1374 | "elsif" | |
1375 | "else" | |
1376 | "fail" | |
1377 | "ensure" | |
1378 | "for" | |
1379 | "end" | |
1380 | "if" | |
1381 | "in" | |
1382 | "module_function" | |
1383 | "module" | |
1384 | "next" | |
1385 | "not" | |
1386 | "or" | |
1387 | "public" | |
1388 | "private" | |
1389 | "protected" | |
1390 | "raise" | |
1391 | "redo" | |
1392 | "rescue" | |
1393 | "retry" | |
1394 | "return" | |
1395 | "then" | |
1396 | "throw" | |
1397 | "super" | |
1398 | "unless" | |
1399 | "undef" | |
1400 | "until" | |
1401 | "when" | |
1402 | "while" | |
1403 | "yield") | |
1404 | t) | |
1405 | "\\)" | |
1406 | ruby-keyword-end-re) | |
1407 | 2) | |
1408 | ;; here-doc beginnings | |
1409 | (list ruby-here-doc-beg-re 0 'font-lock-string-face) | |
1410 | ;; variables | |
1411 | '("\\(^\\|[^_:.@$]\\|\\.\\.\\)\\b\\(nil\\|self\\|true\\|false\\)\\>" | |
1412 | 2 font-lock-variable-name-face) | |
1413 | ;; variables | |
1414 | '("\\(\\$\\([^a-zA-Z0-9 \n]\\|[0-9]\\)\\)\\W" | |
1415 | 1 font-lock-variable-name-face) | |
1416 | '("\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+" | |
1417 | 0 font-lock-variable-name-face) | |
1418 | ;; general delimited string | |
1419 | '("\\(^\\|[[ \t\n<+(,=]\\)\\(%[xrqQwW]?\\([^<[{(a-zA-Z0-9 \n]\\)[^\n\\\\]*\\(\\\\.[^\n\\\\]*\\)*\\(\\3\\)\\)" | |
1420 | (2 font-lock-string-face)) | |
1421 | ;; constants | |
1422 | '("\\(^\\|[^_]\\)\\b\\([A-Z]+\\(\\w\\|_\\)*\\)" | |
1423 | 2 font-lock-type-face) | |
1424 | ;; symbols | |
11473529 | 1425 | '("\\(^\\|[^:]\\)\\(:\\([-+~]@?\\|[/%&|^`]\\|\\*\\*?\\|<\\(<\\|=>?\\)?\\|>[>=]?\\|===?\\|=~\\|![~=]?\\|\\[\\]=?\\|\\(\\w\\|_\\)+\\([!?=]\\|\\b_*\\)\\|#{[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\)\\)" |
c7fbbc3c | 1426 | 2 font-lock-reference-face) |
cc9c9831 | 1427 | '("\\(^\\s *\\|[\[\{\(,]\\s *\\|\\sw\\s +\\)\\(\\(\\sw\\|_\\)+\\):[^:]" 2 font-lock-reference-face) |
c7fbbc3c CY |
1428 | ;; expression expansion |
1429 | '("#\\({[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\|\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+\\)" | |
1430 | 0 font-lock-variable-name-face t) | |
1431 | ;; warn lower camel case | |
1432 | ;'("\\<[a-z]+[a-z0-9]*[A-Z][A-Za-z0-9]*\\([!?]?\\|\\>\\)" | |
1433 | ; 0 font-lock-warning-face) | |
1434 | ) | |
ee61fe97 | 1435 | "Additional expressions to highlight in Ruby mode.") |
c7fbbc3c CY |
1436 | |
1437 | ;;;###autoload | |
cf38dd42 | 1438 | (define-derived-mode ruby-mode prog-mode "Ruby" |
c7fbbc3c CY |
1439 | "Major mode for editing Ruby scripts. |
1440 | \\[ruby-indent-line] properly indents subexpressions of multi-line | |
1441 | class, module, def, if, while, for, do, and case statements, taking | |
1442 | nesting into account. | |
1443 | ||
ee61fe97 JB |
1444 | The variable `ruby-indent-level' controls the amount of indentation. |
1445 | ||
c7fbbc3c | 1446 | \\{ruby-mode-map}" |
c7fbbc3c CY |
1447 | (ruby-mode-variables) |
1448 | ||
1449 | (set (make-local-variable 'imenu-create-index-function) | |
1450 | 'ruby-imenu-create-index) | |
1451 | (set (make-local-variable 'add-log-current-defun-function) | |
1452 | 'ruby-add-log-current-method) | |
1453 | ||
1454 | (add-hook | |
cf38dd42 | 1455 | (cond ((boundp 'before-save-hook) 'before-save-hook) |
c7fbbc3c CY |
1456 | ((boundp 'write-contents-functions) 'write-contents-functions) |
1457 | ((boundp 'write-contents-hooks) 'write-contents-hooks)) | |
cf38dd42 SM |
1458 | 'ruby-mode-set-encoding nil 'local) |
1459 | ||
1460 | (set (make-local-variable 'electric-indent-chars) | |
2122161f | 1461 | (append '(?\{ ?\}) electric-indent-chars)) |
c7fbbc3c CY |
1462 | |
1463 | (set (make-local-variable 'font-lock-defaults) | |
1464 | '((ruby-font-lock-keywords) nil nil)) | |
1465 | (set (make-local-variable 'font-lock-keywords) | |
1466 | ruby-font-lock-keywords) | |
1467 | (set (make-local-variable 'font-lock-syntax-table) | |
1468 | ruby-font-lock-syntax-table) | |
c7fbbc3c | 1469 | |
cf38dd42 SM |
1470 | (if (eval-when-compile (fboundp 'syntax-propertize-rules)) |
1471 | (set (make-local-variable 'syntax-propertize-function) | |
1472 | #'ruby-syntax-propertize-function) | |
1473 | (set (make-local-variable 'font-lock-syntactic-keywords) | |
1474 | ruby-font-lock-syntactic-keywords))) | |
c7fbbc3c CY |
1475 | |
1476 | ;;; Invoke ruby-mode when appropriate | |
1477 | ||
1478 | ;;;###autoload | |
a7610c52 | 1479 | (add-to-list 'auto-mode-alist (cons (purecopy "\\.rb\\'") 'ruby-mode)) |
c7fbbc3c CY |
1480 | |
1481 | ;;;###autoload | |
4d270537 | 1482 | (dolist (name (list "ruby" "rbx" "jruby" "ruby1.9" "ruby1.8")) |
a7610c52 | 1483 | (add-to-list 'interpreter-mode-alist (cons (purecopy name) 'ruby-mode))) |
c7fbbc3c CY |
1484 | |
1485 | (provide 'ruby-mode) | |
1486 | ||
1487 | ;;; ruby-mode.el ends here |