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c7fbbc3c CY |
1 | ;;; ruby-mode.el --- Major mode for editing Ruby files |
2 | ||
3 | ;; Copyright (C) 1994, 1995, 1996 1997, 1998, 1999, 2000, 2001, | |
114f9c96 | 4 | ;; 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
c7fbbc3c CY |
5 | ;; Free Software Foundation, Inc. |
6 | ||
c5220417 GM |
7 | ;; Authors: Yukihiro Matsumoto |
8 | ;; Nobuyoshi Nakada | |
c7fbbc3c CY |
9 | ;; URL: http://www.emacswiki.org/cgi-bin/wiki/RubyMode |
10 | ;; Created: Fri Feb 4 14:49:13 JST 1994 | |
11 | ;; Keywords: languages ruby | |
12 | ;; Version: 1.0 | |
13 | ||
14 | ;; This file is part of GNU Emacs. | |
15 | ||
16 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
17 | ;; it under the terms of the GNU General Public License as published by | |
18 | ;; the Free Software Foundation, either version 3 of the License, or | |
19 | ;; (at your option) any later version. | |
20 | ||
21 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
22 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | ;; GNU General Public License for more details. | |
25 | ||
26 | ;; You should have received a copy of the GNU General Public License | |
27 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
28 | ||
29 | ;;; Commentary: | |
30 | ||
31 | ;; Provides font-locking, indentation support, and navigation for Ruby code. | |
32 | ;; | |
33 | ;; If you're installing manually, you should add this to your .emacs | |
34 | ;; file after putting it on your load path: | |
35 | ;; | |
36 | ;; (autoload 'ruby-mode "ruby-mode" "Major mode for ruby files" t) | |
37 | ;; (add-to-list 'auto-mode-alist '("\\.rb$" . ruby-mode)) | |
38 | ;; (add-to-list 'interpreter-mode-alist '("ruby" . ruby-mode)) | |
39 | ;; | |
40 | ;; Still needs more docstrings; search below for TODO. | |
41 | ||
42 | ;;; Code: | |
43 | ||
44 | (eval-when-compile (require 'cl)) | |
45 | ||
44a41a47 KR |
46 | (defgroup ruby nil |
47 | "Major mode for editing Ruby code." | |
48 | :prefix "ruby-" | |
49 | :group 'languages) | |
50 | ||
c7fbbc3c CY |
51 | (defconst ruby-keyword-end-re |
52 | (if (string-match "\\_>" "ruby") | |
53 | "\\_>" | |
54 | "\\>")) | |
55 | ||
56 | (defconst ruby-block-beg-keywords | |
57 | '("class" "module" "def" "if" "unless" "case" "while" "until" "for" "begin" "do") | |
58 | "Keywords at the beginning of blocks.") | |
59 | ||
60 | (defconst ruby-block-beg-re | |
61 | (regexp-opt ruby-block-beg-keywords) | |
62 | "Regexp to match the beginning of blocks.") | |
63 | ||
64 | (defconst ruby-non-block-do-re | |
65 | (concat (regexp-opt '("while" "until" "for" "rescue") t) ruby-keyword-end-re) | |
66 | "Regexp to match keywords that nest without blocks.") | |
67 | ||
68 | (defconst ruby-indent-beg-re | |
69 | (concat "\\(\\s *" (regexp-opt '("class" "module" "def") t) "\\)\\|" | |
70 | (regexp-opt '("if" "unless" "case" "while" "until" "for" "begin"))) | |
71 | "Regexp to match where the indentation gets deeper.") | |
72 | ||
73 | (defconst ruby-modifier-beg-keywords | |
74 | '("if" "unless" "while" "until") | |
75 | "Modifiers that are the same as the beginning of blocks.") | |
76 | ||
77 | (defconst ruby-modifier-beg-re | |
78 | (regexp-opt ruby-modifier-beg-keywords) | |
79 | "Regexp to match modifiers same as the beginning of blocks.") | |
80 | ||
81 | (defconst ruby-modifier-re | |
82 | (regexp-opt (cons "rescue" ruby-modifier-beg-keywords)) | |
83 | "Regexp to match modifiers.") | |
84 | ||
85 | (defconst ruby-block-mid-keywords | |
86 | '("then" "else" "elsif" "when" "rescue" "ensure") | |
87 | "Keywords where the indentation gets shallower in middle of block statements.") | |
88 | ||
89 | (defconst ruby-block-mid-re | |
90 | (regexp-opt ruby-block-mid-keywords) | |
91 | "Regexp to match where the indentation gets shallower in middle of block statements.") | |
92 | ||
93 | (defconst ruby-block-op-keywords | |
94 | '("and" "or" "not") | |
95 | "Regexp to match boolean keywords.") | |
96 | ||
97 | (defconst ruby-block-hanging-re | |
98 | (regexp-opt (append ruby-modifier-beg-keywords ruby-block-op-keywords)) | |
99 | "Regexp to match hanging block modifiers.") | |
100 | ||
101 | (defconst ruby-block-end-re "\\<end\\>") | |
102 | ||
cf38dd42 SM |
103 | (eval-and-compile |
104 | (defconst ruby-here-doc-beg-re | |
c7fbbc3c | 105 | "\\(<\\)<\\(-\\)?\\(\\([a-zA-Z0-9_]+\\)\\|[\"]\\([^\"]+\\)[\"]\\|[']\\([^']+\\)[']\\)" |
cf38dd42 | 106 | "Regexp to match the beginning of a heredoc.")) |
c7fbbc3c CY |
107 | |
108 | (defun ruby-here-doc-end-match () | |
109 | "Return a regexp to find the end of a heredoc. | |
110 | ||
111 | This should only be called after matching against `ruby-here-doc-beg-re'." | |
112 | (concat "^" | |
113 | (if (match-string 2) "[ \t]*" nil) | |
114 | (regexp-quote | |
115 | (or (match-string 4) | |
116 | (match-string 5) | |
117 | (match-string 6))))) | |
118 | ||
c7fbbc3c CY |
119 | (defconst ruby-delimiter |
120 | (concat "[?$/%(){}#\"'`.:]\\|<<\\|\\[\\|\\]\\|\\<\\(" | |
121 | ruby-block-beg-re | |
122 | "\\)\\>\\|" ruby-block-end-re | |
123 | "\\|^=begin\\|" ruby-here-doc-beg-re)) | |
124 | ||
125 | (defconst ruby-negative | |
126 | (concat "^[ \t]*\\(\\(" ruby-block-mid-re "\\)\\>\\|" | |
127 | ruby-block-end-re "\\|}\\|\\]\\)") | |
128 | "Regexp to match where the indentation gets shallower.") | |
129 | ||
130 | (defconst ruby-operator-re "[-,.+*/%&|^~=<>:]" | |
131 | "Regexp to match operators.") | |
132 | ||
133 | (defconst ruby-symbol-chars "a-zA-Z0-9_" | |
134 | "List of characters that symbol names may contain.") | |
135 | (defconst ruby-symbol-re (concat "[" ruby-symbol-chars "]") | |
136 | "Regexp to match symbols.") | |
137 | ||
138 | (defvar ruby-mode-abbrev-table nil | |
ee61fe97 | 139 | "Abbrev table in use in Ruby mode buffers.") |
c7fbbc3c CY |
140 | |
141 | (define-abbrev-table 'ruby-mode-abbrev-table ()) | |
142 | ||
143 | (defvar ruby-mode-map | |
144 | (let ((map (make-sparse-keymap))) | |
145 | (define-key map "{" 'ruby-electric-brace) | |
146 | (define-key map "}" 'ruby-electric-brace) | |
147 | (define-key map (kbd "M-C-a") 'ruby-beginning-of-defun) | |
148 | (define-key map (kbd "M-C-e") 'ruby-end-of-defun) | |
149 | (define-key map (kbd "M-C-b") 'ruby-backward-sexp) | |
150 | (define-key map (kbd "M-C-f") 'ruby-forward-sexp) | |
151 | (define-key map (kbd "M-C-p") 'ruby-beginning-of-block) | |
152 | (define-key map (kbd "M-C-n") 'ruby-end-of-block) | |
153 | (define-key map (kbd "M-C-h") 'ruby-mark-defun) | |
154 | (define-key map (kbd "M-C-q") 'ruby-indent-exp) | |
c7fbbc3c CY |
155 | (define-key map (kbd "C-M-h") 'backward-kill-word) |
156 | (define-key map (kbd "C-j") 'reindent-then-newline-and-indent) | |
157 | (define-key map (kbd "C-m") 'newline) | |
158 | map) | |
ee61fe97 | 159 | "Keymap used in Ruby mode.") |
c7fbbc3c CY |
160 | |
161 | (defvar ruby-mode-syntax-table | |
162 | (let ((table (make-syntax-table))) | |
163 | (modify-syntax-entry ?\' "\"" table) | |
164 | (modify-syntax-entry ?\" "\"" table) | |
165 | (modify-syntax-entry ?\` "\"" table) | |
166 | (modify-syntax-entry ?# "<" table) | |
167 | (modify-syntax-entry ?\n ">" table) | |
168 | (modify-syntax-entry ?\\ "\\" table) | |
169 | (modify-syntax-entry ?$ "." table) | |
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 | (modify-syntax-entry ?\[ "(]" table) | |
188 | (modify-syntax-entry ?\] ")[" table) | |
189 | table) | |
ee61fe97 | 190 | "Syntax table to use in Ruby mode.") |
c7fbbc3c CY |
191 | |
192 | (defcustom ruby-indent-tabs-mode nil | |
ee61fe97 | 193 | "Indentation can insert tabs in Ruby mode if this is non-nil." |
c7fbbc3c CY |
194 | :type 'boolean :group 'ruby) |
195 | ||
196 | (defcustom ruby-indent-level 2 | |
ee61fe97 | 197 | "Indentation of Ruby statements." |
c7fbbc3c CY |
198 | :type 'integer :group 'ruby) |
199 | ||
200 | (defcustom ruby-comment-column 32 | |
201 | "Indentation column of comments." | |
202 | :type 'integer :group 'ruby) | |
203 | ||
204 | (defcustom ruby-deep-arglist t | |
205 | "Deep indent lists in parenthesis when non-nil. | |
206 | Also ignores spaces after parenthesis when 'space." | |
207 | :group 'ruby) | |
208 | ||
209 | (defcustom ruby-deep-indent-paren '(?\( ?\[ ?\] t) | |
ee61fe97 JB |
210 | "Deep indent lists in parenthesis when non-nil. |
211 | The value t means continuous line. | |
c7fbbc3c CY |
212 | Also ignores spaces after parenthesis when 'space." |
213 | :group 'ruby) | |
214 | ||
215 | (defcustom ruby-deep-indent-paren-style 'space | |
216 | "Default deep indent style." | |
217 | :options '(t nil space) :group 'ruby) | |
218 | ||
219 | (defcustom ruby-encoding-map '((shift_jis . cp932) (shift-jis . cp932)) | |
220 | "Alist to map encoding name from Emacs to Ruby." | |
221 | :group 'ruby) | |
222 | ||
223 | (defcustom ruby-insert-encoding-magic-comment t | |
ee61fe97 | 224 | "Insert a magic Emacs 'coding' comment upon save if this is non-nil." |
c7fbbc3c CY |
225 | :type 'boolean :group 'ruby) |
226 | ||
227 | (defcustom ruby-use-encoding-map t | |
228 | "Use `ruby-encoding-map' to set encoding magic comment if this is non-nil." | |
229 | :type 'boolean :group 'ruby) | |
230 | ||
231 | ;; Safe file variables | |
232 | (put 'ruby-indent-tabs-mode 'safe-local-variable 'booleanp) | |
233 | (put 'ruby-indent-level 'safe-local-variable 'integerp) | |
234 | (put 'ruby-comment-column 'safe-local-variable 'integerp) | |
235 | (put 'ruby-deep-arglist 'safe-local-variable 'booleanp) | |
236 | ||
237 | (defun ruby-imenu-create-index-in-block (prefix beg end) | |
238 | "Create an imenu index of methods inside a block." | |
239 | (let ((index-alist '()) (case-fold-search nil) | |
240 | name next pos decl sing) | |
241 | (goto-char beg) | |
242 | (while (re-search-forward "^\\s *\\(\\(class\\s +\\|\\(class\\s *<<\\s *\\)\\|module\\s +\\)\\([^\(<\n ]+\\)\\|\\(def\\|alias\\)\\s +\\([^\(\n ]+\\)\\)" end t) | |
243 | (setq sing (match-beginning 3)) | |
244 | (setq decl (match-string 5)) | |
245 | (setq next (match-end 0)) | |
246 | (setq name (or (match-string 4) (match-string 6))) | |
247 | (setq pos (match-beginning 0)) | |
248 | (cond | |
249 | ((string= "alias" decl) | |
250 | (if prefix (setq name (concat prefix name))) | |
251 | (push (cons name pos) index-alist)) | |
252 | ((string= "def" decl) | |
253 | (if prefix | |
254 | (setq name | |
255 | (cond | |
256 | ((string-match "^self\." name) | |
257 | (concat (substring prefix 0 -1) (substring name 4))) | |
258 | (t (concat prefix name))))) | |
259 | (push (cons name pos) index-alist) | |
260 | (ruby-accurate-end-of-block end)) | |
261 | (t | |
262 | (if (string= "self" name) | |
263 | (if prefix (setq name (substring prefix 0 -1))) | |
264 | (if prefix (setq name (concat (substring prefix 0 -1) "::" name))) | |
265 | (push (cons name pos) index-alist)) | |
266 | (ruby-accurate-end-of-block end) | |
267 | (setq beg (point)) | |
268 | (setq index-alist | |
269 | (nconc (ruby-imenu-create-index-in-block | |
270 | (concat name (if sing "." "#")) | |
271 | next beg) index-alist)) | |
272 | (goto-char beg)))) | |
273 | index-alist)) | |
274 | ||
275 | (defun ruby-imenu-create-index () | |
276 | "Create an imenu index of all methods in the buffer." | |
277 | (nreverse (ruby-imenu-create-index-in-block nil (point-min) nil))) | |
278 | ||
279 | (defun ruby-accurate-end-of-block (&optional end) | |
280 | "TODO: document." | |
281 | (let (state | |
282 | (end (or end (point-max)))) | |
283 | (while (and (setq state (apply 'ruby-parse-partial end state)) | |
284 | (>= (nth 2 state) 0) (< (point) end))))) | |
285 | ||
286 | (defun ruby-mode-variables () | |
ee61fe97 | 287 | "Set up initial buffer-local variables for Ruby mode." |
c7fbbc3c CY |
288 | (set-syntax-table ruby-mode-syntax-table) |
289 | (setq local-abbrev-table ruby-mode-abbrev-table) | |
290 | (setq indent-tabs-mode ruby-indent-tabs-mode) | |
291 | (set (make-local-variable 'indent-line-function) 'ruby-indent-line) | |
292 | (set (make-local-variable 'require-final-newline) t) | |
293 | (set (make-local-variable 'comment-start) "# ") | |
294 | (set (make-local-variable 'comment-end) "") | |
295 | (set (make-local-variable 'comment-column) ruby-comment-column) | |
296 | (set (make-local-variable 'comment-start-skip) "#+ *") | |
297 | (set (make-local-variable 'parse-sexp-ignore-comments) t) | |
298 | (set (make-local-variable 'parse-sexp-lookup-properties) t) | |
299 | (set (make-local-variable 'paragraph-start) (concat "$\\|" page-delimiter)) | |
300 | (set (make-local-variable 'paragraph-separate) paragraph-start) | |
301 | (set (make-local-variable 'paragraph-ignore-fill-prefix) t)) | |
302 | ||
303 | (defun ruby-mode-set-encoding () | |
304 | "Insert a magic comment header with the proper encoding if necessary." | |
305 | (save-excursion | |
306 | (widen) | |
307 | (goto-char (point-min)) | |
308 | (when (re-search-forward "[^\0-\177]" nil t) | |
309 | (goto-char (point-min)) | |
310 | (let ((coding-system | |
311 | (or coding-system-for-write | |
312 | buffer-file-coding-system))) | |
313 | (if coding-system | |
314 | (setq coding-system | |
315 | (or (coding-system-get coding-system 'mime-charset) | |
316 | (coding-system-change-eol-conversion coding-system nil)))) | |
317 | (setq coding-system | |
318 | (if coding-system | |
319 | (symbol-name | |
320 | (or (and ruby-use-encoding-map | |
321 | (cdr (assq coding-system ruby-encoding-map))) | |
322 | coding-system)) | |
323 | "ascii-8bit")) | |
324 | (if (looking-at "^#![^\n]*ruby") (beginning-of-line 2)) | |
325 | (cond ((looking-at "\\s *#.*-\*-\\s *\\(en\\)?coding\\s *:\\s *\\([-a-z0-9_]*\\)\\s *\\(;\\|-\*-\\)") | |
326 | (unless (string= (match-string 2) coding-system) | |
327 | (goto-char (match-beginning 2)) | |
328 | (delete-region (point) (match-end 2)) | |
329 | (and (looking-at "-\*-") | |
330 | (let ((n (skip-chars-backward " "))) | |
331 | (cond ((= n 0) (insert " ") (backward-char)) | |
332 | ((= n -1) (insert " ")) | |
333 | ((forward-char))))) | |
334 | (insert coding-system))) | |
335 | ((looking-at "\\s *#.*coding\\s *[:=]")) | |
336 | (t (when ruby-insert-encoding-magic-comment | |
337 | (insert "# -*- coding: " coding-system " -*-\n")))))))) | |
338 | ||
339 | (defun ruby-current-indentation () | |
340 | "Return the indentation level of current line." | |
341 | (save-excursion | |
342 | (beginning-of-line) | |
343 | (back-to-indentation) | |
344 | (current-column))) | |
345 | ||
cf38dd42 | 346 | (defun ruby-indent-line (&optional ignored) |
ee61fe97 | 347 | "Correct the indentation of the current Ruby line." |
c7fbbc3c CY |
348 | (interactive) |
349 | (ruby-indent-to (ruby-calculate-indent))) | |
350 | ||
351 | (defun ruby-indent-to (column) | |
352 | "Indent the current line to COLUMN." | |
353 | (when column | |
354 | (let (shift top beg) | |
355 | (and (< column 0) (error "invalid nest")) | |
356 | (setq shift (current-column)) | |
357 | (beginning-of-line) | |
358 | (setq beg (point)) | |
359 | (back-to-indentation) | |
360 | (setq top (current-column)) | |
361 | (skip-chars-backward " \t") | |
362 | (if (>= shift top) (setq shift (- shift top)) | |
363 | (setq shift 0)) | |
364 | (if (and (bolp) | |
365 | (= column top)) | |
366 | (move-to-column (+ column shift)) | |
367 | (move-to-column top) | |
368 | (delete-region beg (point)) | |
369 | (beginning-of-line) | |
370 | (indent-to column) | |
371 | (move-to-column (+ column shift)))))) | |
372 | ||
373 | (defun ruby-special-char-p (&optional pos) | |
374 | "Return t if the character before POS is a special character. | |
375 | If omitted, POS defaults to the current point. | |
376 | Special characters are `?', `$', `:' when preceded by whitespace, | |
377 | and `\\' when preceded by `?'." | |
378 | (setq pos (or pos (point))) | |
379 | (let ((c (char-before pos)) (b (and (< (point-min) pos) | |
380 | (char-before (1- pos))))) | |
381 | (cond ((or (eq c ??) (eq c ?$))) | |
382 | ((and (eq c ?:) (or (not b) (eq (char-syntax b) ? )))) | |
383 | ((eq c ?\\) (eq b ??))))) | |
384 | ||
385 | (defun ruby-expr-beg (&optional option) | |
386 | "TODO: document." | |
387 | (save-excursion | |
388 | (store-match-data nil) | |
cf38dd42 | 389 | (let ((space (skip-chars-backward " \t"))) |
c7fbbc3c CY |
390 | (cond |
391 | ((bolp) t) | |
392 | ((progn | |
393 | (forward-char -1) | |
394 | (and (looking-at "\\?") | |
395 | (or (eq (char-syntax (char-before (point))) ?w) | |
396 | (ruby-special-char-p)))) | |
397 | nil) | |
398 | ((and (eq option 'heredoc) (< space 0)) t) | |
399 | ((or (looking-at ruby-operator-re) | |
400 | (looking-at "[\\[({,;]") | |
401 | (and (looking-at "[!?]") | |
402 | (or (not (eq option 'modifier)) | |
403 | (bolp) | |
404 | (save-excursion (forward-char -1) (looking-at "\\Sw$")))) | |
405 | (and (looking-at ruby-symbol-re) | |
406 | (skip-chars-backward ruby-symbol-chars) | |
407 | (cond | |
408 | ((looking-at (regexp-opt | |
409 | (append ruby-block-beg-keywords | |
410 | ruby-block-op-keywords | |
411 | ruby-block-mid-keywords) | |
412 | 'words)) | |
413 | (goto-char (match-end 0)) | |
414 | (not (looking-at "\\s_"))) | |
415 | ((eq option 'expr-qstr) | |
416 | (looking-at "[a-zA-Z][a-zA-z0-9_]* +%[^ \t]")) | |
417 | ((eq option 'expr-re) | |
418 | (looking-at "[a-zA-Z][a-zA-z0-9_]* +/[^ \t]")) | |
419 | (t nil))))))))) | |
420 | ||
421 | (defun ruby-forward-string (term &optional end no-error expand) | |
422 | "TODO: document." | |
423 | (let ((n 1) (c (string-to-char term)) | |
424 | (re (if expand | |
425 | (concat "[^\\]\\(\\\\\\\\\\)*\\([" term "]\\|\\(#{\\)\\)") | |
426 | (concat "[^\\]\\(\\\\\\\\\\)*[" term "]")))) | |
427 | (while (and (re-search-forward re end no-error) | |
428 | (if (match-beginning 3) | |
429 | (ruby-forward-string "}{" end no-error nil) | |
430 | (> (setq n (if (eq (char-before (point)) c) | |
431 | (1- n) (1+ n))) 0))) | |
432 | (forward-char -1)) | |
433 | (cond ((zerop n)) | |
434 | (no-error nil) | |
435 | ((error "unterminated string"))))) | |
436 | ||
437 | (defun ruby-deep-indent-paren-p (c) | |
ee61fe97 | 438 | "TODO: document." |
c7fbbc3c CY |
439 | (cond ((listp ruby-deep-indent-paren) |
440 | (let ((deep (assoc c ruby-deep-indent-paren))) | |
441 | (cond (deep | |
442 | (or (cdr deep) ruby-deep-indent-paren-style)) | |
443 | ((memq c ruby-deep-indent-paren) | |
444 | ruby-deep-indent-paren-style)))) | |
445 | ((eq c ruby-deep-indent-paren) ruby-deep-indent-paren-style) | |
446 | ((eq c ?\( ) ruby-deep-arglist))) | |
447 | ||
448 | (defun ruby-parse-partial (&optional end in-string nest depth pcol indent) | |
ee61fe97 | 449 | "TODO: document throughout function body." |
c7fbbc3c CY |
450 | (or depth (setq depth 0)) |
451 | (or indent (setq indent 0)) | |
452 | (when (re-search-forward ruby-delimiter end 'move) | |
453 | (let ((pnt (point)) w re expand) | |
454 | (goto-char (match-beginning 0)) | |
455 | (cond | |
456 | ((and (memq (char-before) '(?@ ?$)) (looking-at "\\sw")) | |
457 | (goto-char pnt)) | |
458 | ((looking-at "[\"`]") ;skip string | |
459 | (cond | |
460 | ((and (not (eobp)) | |
461 | (ruby-forward-string (buffer-substring (point) (1+ (point))) end t t)) | |
462 | nil) | |
463 | (t | |
464 | (setq in-string (point)) | |
465 | (goto-char end)))) | |
466 | ((looking-at "'") | |
467 | (cond | |
468 | ((and (not (eobp)) | |
469 | (re-search-forward "[^\\]\\(\\\\\\\\\\)*'" end t)) | |
470 | nil) | |
471 | (t | |
472 | (setq in-string (point)) | |
473 | (goto-char end)))) | |
474 | ((looking-at "/=") | |
475 | (goto-char pnt)) | |
476 | ((looking-at "/") | |
477 | (cond | |
478 | ((and (not (eobp)) (ruby-expr-beg 'expr-re)) | |
479 | (if (ruby-forward-string "/" end t t) | |
480 | nil | |
481 | (setq in-string (point)) | |
482 | (goto-char end))) | |
483 | (t | |
484 | (goto-char pnt)))) | |
485 | ((looking-at "%") | |
486 | (cond | |
487 | ((and (not (eobp)) | |
488 | (ruby-expr-beg 'expr-qstr) | |
489 | (not (looking-at "%=")) | |
490 | (looking-at "%[QqrxWw]?\\([^a-zA-Z0-9 \t\n]\\)")) | |
491 | (goto-char (match-beginning 1)) | |
492 | (setq expand (not (memq (char-before) '(?q ?w)))) | |
493 | (setq w (match-string 1)) | |
494 | (cond | |
495 | ((string= w "[") (setq re "][")) | |
496 | ((string= w "{") (setq re "}{")) | |
497 | ((string= w "(") (setq re ")(")) | |
498 | ((string= w "<") (setq re "><")) | |
499 | ((and expand (string= w "\\")) | |
500 | (setq w (concat "\\" w)))) | |
501 | (unless (cond (re (ruby-forward-string re end t expand)) | |
502 | (expand (ruby-forward-string w end t t)) | |
503 | (t (re-search-forward | |
504 | (if (string= w "\\") | |
505 | "\\\\[^\\]*\\\\" | |
506 | (concat "[^\\]\\(\\\\\\\\\\)*" w)) | |
507 | end t))) | |
508 | (setq in-string (point)) | |
509 | (goto-char end))) | |
510 | (t | |
511 | (goto-char pnt)))) | |
512 | ((looking-at "\\?") ;skip ?char | |
513 | (cond | |
514 | ((and (ruby-expr-beg) | |
515 | (looking-at "?\\(\\\\C-\\|\\\\M-\\)*\\\\?.")) | |
516 | (goto-char (match-end 0))) | |
517 | (t | |
518 | (goto-char pnt)))) | |
519 | ((looking-at "\\$") ;skip $char | |
520 | (goto-char pnt) | |
521 | (forward-char 1)) | |
522 | ((looking-at "#") ;skip comment | |
523 | (forward-line 1) | |
524 | (goto-char (point)) | |
525 | ) | |
526 | ((looking-at "[\\[{(]") | |
527 | (let ((deep (ruby-deep-indent-paren-p (char-after)))) | |
528 | (if (and deep (or (not (eq (char-after) ?\{)) (ruby-expr-beg))) | |
529 | (progn | |
530 | (and (eq deep 'space) (looking-at ".\\s +[^# \t\n]") | |
531 | (setq pnt (1- (match-end 0)))) | |
532 | (setq nest (cons (cons (char-after (point)) pnt) nest)) | |
533 | (setq pcol (cons (cons pnt depth) pcol)) | |
534 | (setq depth 0)) | |
535 | (setq nest (cons (cons (char-after (point)) pnt) nest)) | |
536 | (setq depth (1+ depth)))) | |
537 | (goto-char pnt) | |
538 | ) | |
539 | ((looking-at "[])}]") | |
540 | (if (ruby-deep-indent-paren-p (matching-paren (char-after))) | |
541 | (setq depth (cdr (car pcol)) pcol (cdr pcol)) | |
542 | (setq depth (1- depth))) | |
543 | (setq nest (cdr nest)) | |
544 | (goto-char pnt)) | |
545 | ((looking-at ruby-block-end-re) | |
546 | (if (or (and (not (bolp)) | |
547 | (progn | |
548 | (forward-char -1) | |
549 | (setq w (char-after (point))) | |
550 | (or (eq ?_ w) | |
551 | (eq ?. w)))) | |
552 | (progn | |
553 | (goto-char pnt) | |
554 | (setq w (char-after (point))) | |
555 | (or (eq ?_ w) | |
556 | (eq ?! w) | |
557 | (eq ?? w)))) | |
558 | nil | |
559 | (setq nest (cdr nest)) | |
560 | (setq depth (1- depth))) | |
561 | (goto-char pnt)) | |
562 | ((looking-at "def\\s +[^(\n;]*") | |
563 | (if (or (bolp) | |
564 | (progn | |
565 | (forward-char -1) | |
566 | (not (eq ?_ (char-after (point)))))) | |
567 | (progn | |
568 | (setq nest (cons (cons nil pnt) nest)) | |
569 | (setq depth (1+ depth)))) | |
570 | (goto-char (match-end 0))) | |
571 | ((looking-at (concat "\\<\\(" ruby-block-beg-re "\\)\\>")) | |
572 | (and | |
573 | (save-match-data | |
574 | (or (not (looking-at (concat "do" ruby-keyword-end-re))) | |
575 | (save-excursion | |
576 | (back-to-indentation) | |
577 | (not (looking-at ruby-non-block-do-re))))) | |
578 | (or (bolp) | |
579 | (progn | |
580 | (forward-char -1) | |
581 | (setq w (char-after (point))) | |
582 | (not (or (eq ?_ w) | |
583 | (eq ?. w))))) | |
584 | (goto-char pnt) | |
585 | (setq w (char-after (point))) | |
586 | (not (eq ?_ w)) | |
587 | (not (eq ?! w)) | |
588 | (not (eq ?? w)) | |
589 | (skip-chars-forward " \t") | |
590 | (goto-char (match-beginning 0)) | |
591 | (or (not (looking-at ruby-modifier-re)) | |
592 | (ruby-expr-beg 'modifier)) | |
593 | (goto-char pnt) | |
594 | (setq nest (cons (cons nil pnt) nest)) | |
595 | (setq depth (1+ depth))) | |
596 | (goto-char pnt)) | |
597 | ((looking-at ":\\(['\"]\\)") | |
598 | (goto-char (match-beginning 1)) | |
599 | (ruby-forward-string (buffer-substring (match-beginning 1) (match-end 1)) end)) | |
11473529 | 600 | ((looking-at ":\\([-,.+*/%&|^~<>]=?\\|===?\\|<=>\\|![~=]?\\)") |
c7fbbc3c CY |
601 | (goto-char (match-end 0))) |
602 | ((looking-at ":\\([a-zA-Z_][a-zA-Z_0-9]*[!?=]?\\)?") | |
603 | (goto-char (match-end 0))) | |
604 | ((or (looking-at "\\.\\.\\.?") | |
605 | (looking-at "\\.[0-9]+") | |
606 | (looking-at "\\.[a-zA-Z_0-9]+") | |
607 | (looking-at "\\.")) | |
608 | (goto-char (match-end 0))) | |
609 | ((looking-at "^=begin") | |
610 | (if (re-search-forward "^=end" end t) | |
611 | (forward-line 1) | |
612 | (setq in-string (match-end 0)) | |
613 | (goto-char end))) | |
614 | ((looking-at "<<") | |
615 | (cond | |
616 | ((and (ruby-expr-beg 'heredoc) | |
617 | (looking-at "<<\\(-\\)?\\(\\([\"'`]\\)\\([^\n]+?\\)\\3\\|\\(?:\\sw\\|\\s_\\)+\\)")) | |
618 | (setq re (regexp-quote (or (match-string 4) (match-string 2)))) | |
619 | (if (match-beginning 1) (setq re (concat "\\s *" re))) | |
620 | (let* ((id-end (goto-char (match-end 0))) | |
621 | (line-end-position (save-excursion (end-of-line) (point))) | |
622 | (state (list in-string nest depth pcol indent))) | |
623 | ;; parse the rest of the line | |
624 | (while (and (> line-end-position (point)) | |
625 | (setq state (apply 'ruby-parse-partial | |
626 | line-end-position state)))) | |
627 | (setq in-string (car state) | |
628 | nest (nth 1 state) | |
629 | depth (nth 2 state) | |
630 | pcol (nth 3 state) | |
631 | indent (nth 4 state)) | |
632 | ;; skip heredoc section | |
633 | (if (re-search-forward (concat "^" re "$") end 'move) | |
634 | (forward-line 1) | |
635 | (setq in-string id-end) | |
636 | (goto-char end)))) | |
637 | (t | |
638 | (goto-char pnt)))) | |
639 | ((looking-at "^__END__$") | |
640 | (goto-char pnt)) | |
641 | ((and (looking-at ruby-here-doc-beg-re) | |
642 | (boundp 'ruby-indent-point)) | |
643 | (if (re-search-forward (ruby-here-doc-end-match) | |
644 | ruby-indent-point t) | |
645 | (forward-line 1) | |
646 | (setq in-string (match-end 0)) | |
647 | (goto-char ruby-indent-point))) | |
648 | (t | |
649 | (error (format "bad string %s" | |
650 | (buffer-substring (point) pnt) | |
651 | )))))) | |
652 | (list in-string nest depth pcol)) | |
653 | ||
654 | (defun ruby-parse-region (start end) | |
655 | "TODO: document." | |
656 | (let (state) | |
657 | (save-excursion | |
658 | (if start | |
659 | (goto-char start) | |
660 | (ruby-beginning-of-indent)) | |
661 | (save-restriction | |
662 | (narrow-to-region (point) end) | |
663 | (while (and (> end (point)) | |
664 | (setq state (apply 'ruby-parse-partial end state)))))) | |
665 | (list (nth 0 state) ; in-string | |
666 | (car (nth 1 state)) ; nest | |
667 | (nth 2 state) ; depth | |
668 | (car (car (nth 3 state))) ; pcol | |
669 | ;(car (nth 5 state)) ; indent | |
670 | ))) | |
671 | ||
672 | (defun ruby-indent-size (pos nest) | |
ee61fe97 | 673 | "Return the indentation level in spaces NEST levels deeper than POS." |
c7fbbc3c CY |
674 | (+ pos (* (or nest 1) ruby-indent-level))) |
675 | ||
676 | (defun ruby-calculate-indent (&optional parse-start) | |
ee61fe97 | 677 | "Return the proper indentation level of the current line." |
c7fbbc3c CY |
678 | ;; TODO: Document body |
679 | (save-excursion | |
680 | (beginning-of-line) | |
681 | (let ((ruby-indent-point (point)) | |
682 | (case-fold-search nil) | |
cf38dd42 | 683 | state eol begin op-end |
c7fbbc3c CY |
684 | (paren (progn (skip-syntax-forward " ") |
685 | (and (char-after) (matching-paren (char-after))))) | |
686 | (indent 0)) | |
687 | (if parse-start | |
688 | (goto-char parse-start) | |
689 | (ruby-beginning-of-indent) | |
690 | (setq parse-start (point))) | |
691 | (back-to-indentation) | |
692 | (setq indent (current-column)) | |
693 | (setq state (ruby-parse-region parse-start ruby-indent-point)) | |
694 | (cond | |
695 | ((nth 0 state) ; within string | |
696 | (setq indent nil)) ; do nothing | |
697 | ((car (nth 1 state)) ; in paren | |
698 | (goto-char (setq begin (cdr (nth 1 state)))) | |
699 | (let ((deep (ruby-deep-indent-paren-p (car (nth 1 state))))) | |
700 | (if deep | |
701 | (cond ((and (eq deep t) (eq (car (nth 1 state)) paren)) | |
702 | (skip-syntax-backward " ") | |
703 | (setq indent (1- (current-column)))) | |
704 | ((let ((s (ruby-parse-region (point) ruby-indent-point))) | |
705 | (and (nth 2 s) (> (nth 2 s) 0) | |
706 | (or (goto-char (cdr (nth 1 s))) t))) | |
707 | (forward-word -1) | |
708 | (setq indent (ruby-indent-size (current-column) | |
709 | (nth 2 state)))) | |
710 | (t | |
711 | (setq indent (current-column)) | |
712 | (cond ((eq deep 'space)) | |
713 | (paren (setq indent (1- indent))) | |
714 | (t (setq indent (ruby-indent-size (1- indent) 1)))))) | |
715 | (if (nth 3 state) (goto-char (nth 3 state)) | |
716 | (goto-char parse-start) (back-to-indentation)) | |
717 | (setq indent (ruby-indent-size (current-column) (nth 2 state)))) | |
718 | (and (eq (car (nth 1 state)) paren) | |
719 | (ruby-deep-indent-paren-p (matching-paren paren)) | |
720 | (search-backward (char-to-string paren)) | |
721 | (setq indent (current-column))))) | |
722 | ((and (nth 2 state) (> (nth 2 state) 0)) ; in nest | |
723 | (if (null (cdr (nth 1 state))) | |
724 | (error "invalid nest")) | |
725 | (goto-char (cdr (nth 1 state))) | |
726 | (forward-word -1) ; skip back a keyword | |
727 | (setq begin (point)) | |
728 | (cond | |
729 | ((looking-at "do\\>[^_]") ; iter block is a special case | |
730 | (if (nth 3 state) (goto-char (nth 3 state)) | |
731 | (goto-char parse-start) (back-to-indentation)) | |
732 | (setq indent (ruby-indent-size (current-column) (nth 2 state)))) | |
733 | (t | |
734 | (setq indent (+ (current-column) ruby-indent-level))))) | |
ee61fe97 | 735 | |
c7fbbc3c CY |
736 | ((and (nth 2 state) (< (nth 2 state) 0)) ; in negative nest |
737 | (setq indent (ruby-indent-size (current-column) (nth 2 state))))) | |
738 | (when indent | |
739 | (goto-char ruby-indent-point) | |
740 | (end-of-line) | |
741 | (setq eol (point)) | |
742 | (beginning-of-line) | |
743 | (cond | |
744 | ((and (not (ruby-deep-indent-paren-p paren)) | |
745 | (re-search-forward ruby-negative eol t)) | |
746 | (and (not (eq ?_ (char-after (match-end 0)))) | |
747 | (setq indent (- indent ruby-indent-level)))) | |
748 | ((and | |
749 | (save-excursion | |
750 | (beginning-of-line) | |
751 | (not (bobp))) | |
752 | (or (ruby-deep-indent-paren-p t) | |
753 | (null (car (nth 1 state))))) | |
754 | ;; goto beginning of non-empty no-comment line | |
755 | (let (end done) | |
756 | (while (not done) | |
757 | (skip-chars-backward " \t\n") | |
758 | (setq end (point)) | |
759 | (beginning-of-line) | |
760 | (if (re-search-forward "^\\s *#" end t) | |
761 | (beginning-of-line) | |
762 | (setq done t)))) | |
c7fbbc3c CY |
763 | (end-of-line) |
764 | ;; skip the comment at the end | |
765 | (skip-chars-backward " \t") | |
766 | (let (end (pos (point))) | |
767 | (beginning-of-line) | |
768 | (while (and (re-search-forward "#" pos t) | |
769 | (setq end (1- (point))) | |
770 | (or (ruby-special-char-p end) | |
771 | (and (setq state (ruby-parse-region parse-start end)) | |
772 | (nth 0 state)))) | |
773 | (setq end nil)) | |
774 | (goto-char (or end pos)) | |
775 | (skip-chars-backward " \t") | |
776 | (setq begin (if (and end (nth 0 state)) pos (cdr (nth 1 state)))) | |
777 | (setq state (ruby-parse-region parse-start (point)))) | |
778 | (or (bobp) (forward-char -1)) | |
779 | (and | |
780 | (or (and (looking-at ruby-symbol-re) | |
781 | (skip-chars-backward ruby-symbol-chars) | |
782 | (looking-at (concat "\\<\\(" ruby-block-hanging-re "\\)\\>")) | |
783 | (not (eq (point) (nth 3 state))) | |
784 | (save-excursion | |
785 | (goto-char (match-end 0)) | |
786 | (not (looking-at "[a-z_]")))) | |
787 | (and (looking-at ruby-operator-re) | |
788 | (not (ruby-special-char-p)) | |
789 | ;; operator at the end of line | |
790 | (let ((c (char-after (point)))) | |
791 | (and | |
792 | ;; (or (null begin) | |
793 | ;; (save-excursion | |
794 | ;; (goto-char begin) | |
795 | ;; (skip-chars-forward " \t") | |
796 | ;; (not (or (eolp) (looking-at "#") | |
797 | ;; (and (eq (car (nth 1 state)) ?{) | |
798 | ;; (looking-at "|")))))) | |
799 | (or (not (eq ?/ c)) | |
800 | (null (nth 0 (ruby-parse-region (or begin parse-start) (point))))) | |
801 | (or (not (eq ?| (char-after (point)))) | |
802 | (save-excursion | |
803 | (or (eolp) (forward-char -1)) | |
804 | (cond | |
805 | ((search-backward "|" nil t) | |
806 | (skip-chars-backward " \t\n") | |
807 | (and (not (eolp)) | |
808 | (progn | |
809 | (forward-char -1) | |
810 | (not (looking-at "{"))) | |
811 | (progn | |
812 | (forward-word -1) | |
813 | (not (looking-at "do\\>[^_]"))))) | |
814 | (t t)))) | |
815 | (not (eq ?, c)) | |
816 | (setq op-end t))))) | |
817 | (setq indent | |
818 | (cond | |
819 | ((and | |
820 | (null op-end) | |
821 | (not (looking-at (concat "\\<\\(" ruby-block-hanging-re "\\)\\>"))) | |
822 | (eq (ruby-deep-indent-paren-p t) 'space) | |
823 | (not (bobp))) | |
824 | (widen) | |
825 | (goto-char (or begin parse-start)) | |
826 | (skip-syntax-forward " ") | |
827 | (current-column)) | |
828 | ((car (nth 1 state)) indent) | |
829 | (t | |
830 | (+ indent ruby-indent-level)))))))) | |
831 | (goto-char ruby-indent-point) | |
832 | (beginning-of-line) | |
833 | (skip-syntax-forward " ") | |
834 | (if (looking-at "\\.[^.]") | |
835 | (+ indent ruby-indent-level) | |
836 | indent)))) | |
837 | ||
838 | (defun ruby-electric-brace (arg) | |
ee61fe97 | 839 | "Insert a brace and re-indent the current line." |
c7fbbc3c CY |
840 | (interactive "P") |
841 | (self-insert-command (prefix-numeric-value arg)) | |
842 | (ruby-indent-line t)) | |
843 | ||
844 | ;; TODO: Why isn't one ruby-*-of-defun written in terms of the other? | |
845 | (defun ruby-beginning-of-defun (&optional arg) | |
846 | "Move backward to the beginning of the current top-level defun. | |
ee61fe97 | 847 | With ARG, move backward multiple defuns. Negative ARG means |
c7fbbc3c CY |
848 | move forward." |
849 | (interactive "p") | |
850 | (and (re-search-backward (concat "^\\(" ruby-block-beg-re "\\)\\b") | |
851 | nil 'move (or arg 1)) | |
852 | (beginning-of-line))) | |
853 | ||
854 | (defun ruby-end-of-defun (&optional arg) | |
855 | "Move forward to the end of the current top-level defun. | |
ee61fe97 | 856 | With ARG, move forward multiple defuns. Negative ARG means |
c7fbbc3c CY |
857 | move backward." |
858 | (interactive "p") | |
859 | (and (re-search-forward (concat "^\\(" ruby-block-end-re "\\)\\($\\|\\b[^_]\\)") | |
860 | nil 'move (or arg 1)) | |
861 | (beginning-of-line)) | |
862 | (forward-line 1)) | |
863 | ||
864 | (defun ruby-beginning-of-indent () | |
865 | "TODO: document" | |
866 | ;; I don't understand this function. | |
867 | ;; It seems like it should move to the line where indentation should deepen, | |
868 | ;; but ruby-indent-beg-re only accounts for whitespace before class, module and def, | |
869 | ;; so this will only match other block beginners at the beginning of the line. | |
870 | (and (re-search-backward (concat "^\\(" ruby-indent-beg-re "\\)\\b") nil 'move) | |
871 | (beginning-of-line))) | |
872 | ||
873 | (defun ruby-move-to-block (n) | |
ee61fe97 | 874 | "Move to the beginning (N < 0) or the end (N > 0) of the current block |
c7fbbc3c CY |
875 | or blocks containing the current block." |
876 | ;; TODO: Make this work for n > 1, | |
877 | ;; make it not loop for n = 0, | |
878 | ;; document body | |
879 | (let (start pos done down) | |
880 | (setq start (ruby-calculate-indent)) | |
881 | (setq down (looking-at (if (< n 0) ruby-block-end-re | |
882 | (concat "\\<\\(" ruby-block-beg-re "\\)\\>")))) | |
883 | (while (and (not done) (not (if (< n 0) (bobp) (eobp)))) | |
884 | (forward-line n) | |
885 | (cond | |
886 | ((looking-at "^\\s *$")) | |
887 | ((looking-at "^\\s *#")) | |
888 | ((and (> n 0) (looking-at "^=begin\\>")) | |
889 | (re-search-forward "^=end\\>")) | |
890 | ((and (< n 0) (looking-at "^=end\\>")) | |
891 | (re-search-backward "^=begin\\>")) | |
892 | (t | |
893 | (setq pos (current-indentation)) | |
894 | (cond | |
895 | ((< start pos) | |
896 | (setq down t)) | |
897 | ((and down (= pos start)) | |
898 | (setq done t)) | |
899 | ((> start pos) | |
900 | (setq done t))))) | |
901 | (if done | |
902 | (save-excursion | |
903 | (back-to-indentation) | |
904 | (if (looking-at (concat "\\<\\(" ruby-block-mid-re "\\)\\>")) | |
905 | (setq done nil)))))) | |
906 | (back-to-indentation)) | |
907 | ||
908 | (defun ruby-beginning-of-block (&optional arg) | |
909 | "Move backward to the beginning of the current block. | |
910 | With ARG, move up multiple blocks." | |
911 | (interactive "p") | |
912 | (ruby-move-to-block (- (or arg 1)))) | |
913 | ||
914 | (defun ruby-end-of-block (&optional arg) | |
915 | "Move forward to the end of the current block. | |
916 | With ARG, move out of multiple blocks." | |
917 | ;; Passing a value > 1 to ruby-move-to-block currently doesn't work. | |
918 | (interactive) | |
919 | (ruby-move-to-block (or arg 1))) | |
920 | ||
921 | (defun ruby-forward-sexp (&optional arg) | |
922 | "Move forward across one balanced expression (sexp). | |
ee61fe97 | 923 | With ARG, do it many times. Negative ARG means move backward." |
c7fbbc3c CY |
924 | ;; TODO: Document body |
925 | (interactive "p") | |
926 | (if (and (numberp arg) (< arg 0)) | |
927 | (ruby-backward-sexp (- arg)) | |
928 | (let ((i (or arg 1))) | |
929 | (condition-case nil | |
930 | (while (> i 0) | |
931 | (skip-syntax-forward " ") | |
932 | (cond ((looking-at "\\?\\(\\\\[CM]-\\)*\\\\?\\S ") | |
933 | (goto-char (match-end 0))) | |
934 | ((progn | |
935 | (skip-chars-forward ",.:;|&^~=!?\\+\\-\\*") | |
936 | (looking-at "\\s(")) | |
937 | (goto-char (scan-sexps (point) 1))) | |
938 | ((and (looking-at (concat "\\<\\(" ruby-block-beg-re "\\)\\>")) | |
939 | (not (eq (char-before (point)) ?.)) | |
940 | (not (eq (char-before (point)) ?:))) | |
941 | (ruby-end-of-block) | |
942 | (forward-word 1)) | |
943 | ((looking-at "\\(\\$\\|@@?\\)?\\sw") | |
944 | (while (progn | |
945 | (while (progn (forward-word 1) (looking-at "_"))) | |
946 | (cond ((looking-at "::") (forward-char 2) t) | |
947 | ((> (skip-chars-forward ".") 0)) | |
948 | ((looking-at "\\?\\|!\\(=[~=>]\\|[^~=]\\)") | |
949 | (forward-char 1) nil))))) | |
950 | ((let (state expr) | |
951 | (while | |
952 | (progn | |
953 | (setq expr (or expr (ruby-expr-beg) | |
954 | (looking-at "%\\sw?\\Sw\\|[\"'`/]"))) | |
955 | (nth 1 (setq state (apply 'ruby-parse-partial nil state)))) | |
956 | (setq expr t) | |
957 | (skip-chars-forward "<")) | |
958 | (not expr)))) | |
959 | (setq i (1- i))) | |
960 | ((error) (forward-word 1))) | |
961 | i))) | |
962 | ||
963 | (defun ruby-backward-sexp (&optional arg) | |
964 | "Move backward across one balanced expression (sexp). | |
ee61fe97 | 965 | With ARG, do it many times. Negative ARG means move forward." |
c7fbbc3c CY |
966 | ;; TODO: Document body |
967 | (interactive "p") | |
968 | (if (and (numberp arg) (< arg 0)) | |
969 | (ruby-forward-sexp (- arg)) | |
970 | (let ((i (or arg 1))) | |
971 | (condition-case nil | |
972 | (while (> i 0) | |
973 | (skip-chars-backward " \t\n,.:;|&^~=!?\\+\\-\\*") | |
974 | (forward-char -1) | |
975 | (cond ((looking-at "\\s)") | |
976 | (goto-char (scan-sexps (1+ (point)) -1)) | |
977 | (case (char-before) | |
978 | (?% (forward-char -1)) | |
979 | ('(?q ?Q ?w ?W ?r ?x) | |
980 | (if (eq (char-before (1- (point))) ?%) (forward-char -2)))) | |
981 | nil) | |
982 | ((looking-at "\\s\"\\|\\\\\\S_") | |
983 | (let ((c (char-to-string (char-before (match-end 0))))) | |
984 | (while (and (search-backward c) | |
985 | (eq (logand (skip-chars-backward "\\") 1) | |
986 | 1)))) | |
987 | nil) | |
988 | ((looking-at "\\s.\\|\\s\\") | |
989 | (if (ruby-special-char-p) (forward-char -1))) | |
990 | ((looking-at "\\s(") nil) | |
991 | (t | |
992 | (forward-char 1) | |
993 | (while (progn (forward-word -1) | |
994 | (case (char-before) | |
995 | (?_ t) | |
996 | (?. (forward-char -1) t) | |
997 | ((?$ ?@) | |
998 | (forward-char -1) | |
999 | (and (eq (char-before) (char-after)) (forward-char -1))) | |
1000 | (?: | |
1001 | (forward-char -1) | |
1002 | (eq (char-before) :))))) | |
1003 | (if (looking-at ruby-block-end-re) | |
1004 | (ruby-beginning-of-block)) | |
1005 | nil)) | |
1006 | (setq i (1- i))) | |
1007 | ((error))) | |
1008 | i))) | |
1009 | ||
1010 | (defun ruby-mark-defun () | |
1011 | "Put mark at end of this Ruby function, point at beginning." | |
1012 | (interactive) | |
1013 | (push-mark (point)) | |
1014 | (ruby-end-of-defun) | |
1015 | (push-mark (point) nil t) | |
1016 | (ruby-beginning-of-defun) | |
1017 | (re-search-backward "^\n" (- (point) 1) t)) | |
1018 | ||
cf38dd42 SM |
1019 | (defun ruby-indent-exp (&optional ignored) |
1020 | "Indent each line in the balanced expression following the point." | |
c7fbbc3c CY |
1021 | (interactive "*P") |
1022 | (let ((here (point-marker)) start top column (nest t)) | |
1023 | (set-marker-insertion-type here t) | |
1024 | (unwind-protect | |
1025 | (progn | |
1026 | (beginning-of-line) | |
1027 | (setq start (point) top (current-indentation)) | |
1028 | (while (and (not (eobp)) | |
1029 | (progn | |
1030 | (setq column (ruby-calculate-indent start)) | |
1031 | (cond ((> column top) | |
1032 | (setq nest t)) | |
1033 | ((and (= column top) nest) | |
1034 | (setq nest nil) t)))) | |
1035 | (ruby-indent-to column) | |
1036 | (beginning-of-line 2))) | |
1037 | (goto-char here) | |
1038 | (set-marker here nil)))) | |
1039 | ||
1040 | (defun ruby-add-log-current-method () | |
ee61fe97 | 1041 | "Return the current method name as a string. |
c7fbbc3c CY |
1042 | This string includes all namespaces. |
1043 | ||
1044 | For example: | |
1045 | ||
1046 | #exit | |
1047 | String#gsub | |
1048 | Net::HTTP#active? | |
1049 | File::open. | |
1050 | ||
1051 | See `add-log-current-defun-function'." | |
1052 | ;; TODO: Document body | |
1053 | ;; Why does this append a period to class methods? | |
1054 | (condition-case nil | |
1055 | (save-excursion | |
1056 | (let (mname mlist (indent 0)) | |
1057 | ;; get current method (or class/module) | |
1058 | (if (re-search-backward | |
1059 | (concat "^[ \t]*\\(def\\|class\\|module\\)[ \t]+" | |
1060 | "\\(" | |
1061 | ;; \\. and :: for class method | |
1062 | "\\([A-Za-z_]" ruby-symbol-re "*\\|\\.\\|::" "\\)" | |
1063 | "+\\)") | |
1064 | nil t) | |
1065 | (progn | |
1066 | (setq mname (match-string 2)) | |
1067 | (unless (string-equal "def" (match-string 1)) | |
1068 | (setq mlist (list mname) mname nil)) | |
1069 | (goto-char (match-beginning 1)) | |
1070 | (setq indent (current-column)) | |
1071 | (beginning-of-line))) | |
1072 | ;; nest class/module | |
1073 | (while (and (> indent 0) | |
1074 | (re-search-backward | |
1075 | (concat | |
1076 | "^[ \t]*\\(class\\|module\\)[ \t]+" | |
1077 | "\\([A-Z]" ruby-symbol-re "*\\)") | |
1078 | nil t)) | |
1079 | (goto-char (match-beginning 1)) | |
1080 | (if (< (current-column) indent) | |
1081 | (progn | |
1082 | (setq mlist (cons (match-string 2) mlist)) | |
1083 | (setq indent (current-column)) | |
1084 | (beginning-of-line)))) | |
1085 | (when mname | |
1086 | (let ((mn (split-string mname "\\.\\|::"))) | |
1087 | (if (cdr mn) | |
1088 | (progn | |
1089 | (cond | |
1090 | ((string-equal "" (car mn)) | |
1091 | (setq mn (cdr mn) mlist nil)) | |
1092 | ((string-equal "self" (car mn)) | |
1093 | (setq mn (cdr mn))) | |
1094 | ((let ((ml (nreverse mlist))) | |
1095 | (while ml | |
1096 | (if (string-equal (car ml) (car mn)) | |
1097 | (setq mlist (nreverse (cdr ml)) ml nil)) | |
1098 | (or (setq ml (cdr ml)) (nreverse mlist)))))) | |
1099 | (if mlist | |
1100 | (setcdr (last mlist) mn) | |
1101 | (setq mlist mn)) | |
1102 | (setq mn (last mn 2)) | |
1103 | (setq mname (concat "." (cadr mn))) | |
1104 | (setcdr mn nil)) | |
1105 | (setq mname (concat "#" mname))))) | |
1106 | ;; generate string | |
1107 | (if (consp mlist) | |
1108 | (setq mlist (mapconcat (function identity) mlist "::"))) | |
1109 | (if mname | |
1110 | (if mlist (concat mlist mname) mname) | |
1111 | mlist))))) | |
1112 | ||
cf38dd42 SM |
1113 | (if (eval-when-compile (fboundp #'syntax-propertize-rules)) |
1114 | ;; New code that works independently from font-lock. | |
1115 | (progn | |
1116 | (defun ruby-syntax-propertize-function (start end) | |
1117 | "Syntactic keywords for Ruby mode. See `syntax-propertize-function'." | |
1118 | (goto-char start) | |
1119 | (ruby-syntax-propertize-heredoc end) | |
1120 | (funcall | |
1121 | (syntax-propertize-rules | |
1122 | ;; #{ }, #$hoge, #@foo are not comments | |
1123 | ("\\(#\\)[{$@]" (1 ".")) | |
1124 | ;; the last $', $", $` in the respective string is not variable | |
1125 | ;; the last ?', ?", ?` in the respective string is not ascii code | |
1126 | ("\\(^\\|[\[ \t\n<+\(,=]\\)\\(['\"`]\\)\\(\\\\.\\|\\2\\|[^'\"`\n\\\\]\\)*?\\\\?[?$]\\(\\2\\)" | |
1127 | (2 "\"") | |
1128 | (4 "\"")) | |
1129 | ;; $' $" $` .... are variables | |
1130 | ;; ?' ?" ?` are ascii codes | |
1131 | ("\\(^\\|[^\\\\]\\)\\(\\\\\\\\\\)*[?$]\\([#\"'`]\\)" (3 ".")) | |
1132 | ;; regexps | |
1133 | ("\\(^\\|[=(,~?:;<>]\\|\\(^\\|\\s \\)\\(if\\|elsif\\|unless\\|while\\|until\\|when\\|and\\|or\\|&&\\|||\\)\\|g?sub!?\\|scan\\|split!?\\)\\s *\\(/\\)[^/\n\\\\]*\\(\\\\.[^/\n\\\\]*\\)*\\(/\\)" | |
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 | ) | |
1167 | ||
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'." | |
1183 | (let ((contents (regexp-quote (match-string 2)))) | |
1184 | (concat "<<" | |
1185 | (let ((match (match-string 1))) | |
1186 | (if (and match (> (length match) 0)) | |
1187 | (concat "\\(?:-\\([\"']?\\)\\|\\([\"']\\)" match "\\)" | |
1188 | contents "\\b\\(\\1\\|\\2\\)") | |
1189 | (concat "-?\\([\"']\\|\\)" contents "\\b\\1")))))) | |
1190 | ||
1191 | (defconst ruby-font-lock-syntactic-keywords | |
1192 | `( ;; #{ }, #$hoge, #@foo are not comments | |
1193 | ("\\(#\\)[{$@]" 1 (1 . nil)) | |
1194 | ;; the last $', $", $` in the respective string is not variable | |
1195 | ;; the last ?', ?", ?` in the respective string is not ascii code | |
1196 | ("\\(^\\|[\[ \t\n<+\(,=]\\)\\(['\"`]\\)\\(\\\\.\\|\\2\\|[^'\"`\n\\\\]\\)*?\\\\?[?$]\\(\\2\\)" | |
1197 | (2 (7 . nil)) | |
1198 | (4 (7 . nil))) | |
1199 | ;; $' $" $` .... are variables | |
1200 | ;; ?' ?" ?` are ascii codes | |
1201 | ("\\(^\\|[^\\\\]\\)\\(\\\\\\\\\\)*[?$]\\([#\"'`]\\)" 3 (1 . nil)) | |
1202 | ;; regexps | |
1203 | ("\\(^\\|[=(,~?:;<>]\\|\\(^\\|\\s \\)\\(if\\|elsif\\|unless\\|while\\|until\\|when\\|and\\|or\\|&&\\|||\\)\\|g?sub!?\\|scan\\|split!?\\)\\s *\\(/\\)[^/\n\\\\]*\\(\\\\.[^/\n\\\\]*\\)*\\(/\\)" | |
1204 | (4 (7 . ?/)) | |
1205 | (6 (7 . ?/))) | |
1206 | ("^=en\\(d\\)\\_>" 1 "!") | |
1207 | ("^\\(=\\)begin\\_>" 1 (ruby-comment-beg-syntax)) | |
1208 | ;; Currently, the following case is highlighted incorrectly: | |
1209 | ;; | |
1210 | ;; <<FOO | |
1211 | ;; FOO | |
1212 | ;; <<BAR | |
1213 | ;; <<BAZ | |
1214 | ;; BAZ | |
1215 | ;; BAR | |
1216 | ;; | |
1217 | ;; This is because all here-doc beginnings are highlighted before any endings, | |
1218 | ;; so although <<BAR is properly marked as a beginning, when we get to <<BAZ | |
1219 | ;; it thinks <<BAR is part of a string so it's marked as well. | |
1220 | ;; | |
1221 | ;; This may be fixable by modifying ruby-in-here-doc-p to use | |
1222 | ;; ruby-in-non-here-doc-string-p rather than syntax-ppss-context, | |
1223 | ;; but I don't want to try that until we've got unit tests set up | |
1224 | ;; to make sure I don't break anything else. | |
1225 | (,(concat ruby-here-doc-beg-re ".*\\(\n\\)") | |
1226 | ,(+ 1 (regexp-opt-depth ruby-here-doc-beg-re)) | |
1227 | (ruby-here-doc-beg-syntax)) | |
1228 | (,ruby-here-doc-end-re 3 (ruby-here-doc-end-syntax))) | |
1229 | "Syntactic keywords for Ruby mode. See `font-lock-syntactic-keywords'.") | |
1230 | ||
1231 | (defun ruby-comment-beg-syntax () | |
1232 | "Return the syntax cell for a the first character of a =begin. | |
c7fbbc3c CY |
1233 | See the definition of `ruby-font-lock-syntactic-keywords'. |
1234 | ||
1235 | This returns a comment-delimiter cell as long as the =begin | |
1236 | isn't in a string or another comment." | |
cf38dd42 SM |
1237 | (when (not (nth 3 (syntax-ppss))) |
1238 | (string-to-syntax "!"))) | |
1239 | ||
1240 | (defun ruby-in-here-doc-p () | |
1241 | "Return whether or not the point is in a heredoc." | |
1242 | (save-excursion | |
1243 | (let ((old-point (point)) (case-fold-search nil)) | |
1244 | (beginning-of-line) | |
1245 | (catch 'found-beg | |
1246 | (while (re-search-backward ruby-here-doc-beg-re nil t) | |
1247 | (if (not (or (ruby-in-ppss-context-p 'anything) | |
1248 | (ruby-here-doc-find-end old-point))) | |
1249 | (throw 'found-beg t))))))) | |
1250 | ||
1251 | (defun ruby-here-doc-find-end (&optional limit) | |
1252 | "Expects the point to be on a line with one or more heredoc openers. | |
1253 | Returns the buffer position at which all heredocs on the line | |
1254 | are terminated, or nil if they aren't terminated before the | |
1255 | buffer position `limit' or the end of the buffer." | |
1256 | (save-excursion | |
1257 | (beginning-of-line) | |
1258 | (catch 'done | |
1259 | (let ((eol (save-excursion (end-of-line) (point))) | |
1260 | (case-fold-search nil) | |
1261 | ;; Fake match data such that (match-end 0) is at eol | |
1262 | (end-match-data (progn (looking-at ".*$") (match-data))) | |
1263 | beg-match-data end-re) | |
1264 | (while (re-search-forward ruby-here-doc-beg-re eol t) | |
1265 | (setq beg-match-data (match-data)) | |
1266 | (setq end-re (ruby-here-doc-end-match)) | |
1267 | ||
1268 | (set-match-data end-match-data) | |
1269 | (goto-char (match-end 0)) | |
1270 | (unless (re-search-forward end-re limit t) (throw 'done nil)) | |
1271 | (setq end-match-data (match-data)) | |
1272 | ||
1273 | (set-match-data beg-match-data) | |
1274 | (goto-char (match-end 0))) | |
1275 | (set-match-data end-match-data) | |
1276 | (goto-char (match-end 0)) | |
1277 | (point))))) | |
1278 | ||
1279 | (defun ruby-here-doc-beg-syntax () | |
1280 | "Return the syntax cell for a line that may begin a heredoc. | |
1281 | See the definition of `ruby-font-lock-syntactic-keywords'. | |
1282 | ||
1283 | This sets the syntax cell for the newline ending the line | |
1284 | containing the heredoc beginning so that cases where multiple | |
1285 | heredocs are started on one line are handled correctly." | |
1286 | (save-excursion | |
1287 | (goto-char (match-beginning 0)) | |
1288 | (unless (or (ruby-in-ppss-context-p 'non-heredoc) | |
1289 | (ruby-in-here-doc-p)) | |
1290 | (string-to-syntax "\"")))) | |
1291 | ||
1292 | (defun ruby-here-doc-end-syntax () | |
1293 | "Return the syntax cell for a line that may end a heredoc. | |
1294 | See the definition of `ruby-font-lock-syntactic-keywords'." | |
1295 | (let ((pss (syntax-ppss)) (case-fold-search nil)) | |
1296 | ;; If we aren't in a string, we definitely aren't ending a heredoc, | |
1297 | ;; so we can just give up. | |
1298 | ;; This means we aren't doing a full-document search | |
1299 | ;; every time we enter a character. | |
1300 | (when (ruby-in-ppss-context-p 'heredoc pss) | |
1301 | (save-excursion | |
1302 | (goto-char (nth 8 pss)) ; Go to the beginning of heredoc. | |
1303 | (let ((eol (point))) | |
1304 | (beginning-of-line) | |
1305 | (if (and (re-search-forward (ruby-here-doc-beg-match) eol t) ; If there is a heredoc that matches this line... | |
1306 | (not (ruby-in-ppss-context-p 'anything)) ; And that's not inside a heredoc/string/comment... | |
1307 | (progn (goto-char (match-end 0)) ; And it's the last heredoc on its line... | |
1308 | (not (re-search-forward ruby-here-doc-beg-re eol t)))) | |
1309 | (string-to-syntax "\""))))))) | |
c7fbbc3c | 1310 | |
cf38dd42 SM |
1311 | (unless (functionp 'syntax-ppss) |
1312 | (defun syntax-ppss (&optional pos) | |
1313 | (parse-partial-sexp (point-min) (or pos (point))))) | |
1314 | ) | |
c7fbbc3c CY |
1315 | |
1316 | (defun ruby-in-ppss-context-p (context &optional ppss) | |
1317 | (let ((ppss (or ppss (syntax-ppss (point))))) | |
1318 | (if (cond | |
1319 | ((eq context 'anything) | |
1320 | (or (nth 3 ppss) | |
1321 | (nth 4 ppss))) | |
1322 | ((eq context 'string) | |
1323 | (nth 3 ppss)) | |
1324 | ((eq context 'heredoc) | |
cf38dd42 | 1325 | (eq ?\n (nth 3 ppss))) |
c7fbbc3c CY |
1326 | ((eq context 'non-heredoc) |
1327 | (and (ruby-in-ppss-context-p 'anything) | |
1328 | (not (ruby-in-ppss-context-p 'heredoc)))) | |
1329 | ((eq context 'comment) | |
1330 | (nth 4 ppss)) | |
1331 | (t | |
1332 | (error (concat | |
1333 | "Internal error on `ruby-in-ppss-context-p': " | |
1334 | "context name `" (symbol-name context) "' is unknown")))) | |
1335 | t))) | |
1336 | ||
c7fbbc3c CY |
1337 | (if (featurep 'xemacs) |
1338 | (put 'ruby-mode 'font-lock-defaults | |
1339 | '((ruby-font-lock-keywords) | |
1340 | nil nil nil | |
1341 | beginning-of-line | |
1342 | (font-lock-syntactic-keywords | |
1343 | . ruby-font-lock-syntactic-keywords)))) | |
1344 | ||
1345 | (defvar ruby-font-lock-syntax-table | |
1346 | (let ((tbl (copy-syntax-table ruby-mode-syntax-table))) | |
1347 | (modify-syntax-entry ?_ "w" tbl) | |
1348 | tbl) | |
ee61fe97 | 1349 | "The syntax table to use for fontifying Ruby mode buffers. |
c7fbbc3c CY |
1350 | See `font-lock-syntax-table'.") |
1351 | ||
1352 | (defconst ruby-font-lock-keywords | |
1353 | (list | |
1354 | ;; functions | |
1355 | '("^\\s *def\\s +\\([^( \t\n]+\\)" | |
1356 | 1 font-lock-function-name-face) | |
1357 | ;; keywords | |
1358 | (cons (concat | |
1359 | "\\(^\\|[^_:.@$]\\|\\.\\.\\)\\b\\(defined\\?\\|" | |
1360 | (regexp-opt | |
1361 | '("alias_method" | |
1362 | "alias" | |
1363 | "and" | |
1364 | "begin" | |
1365 | "break" | |
1366 | "case" | |
1367 | "catch" | |
1368 | "class" | |
1369 | "def" | |
1370 | "do" | |
1371 | "elsif" | |
1372 | "else" | |
1373 | "fail" | |
1374 | "ensure" | |
1375 | "for" | |
1376 | "end" | |
1377 | "if" | |
1378 | "in" | |
1379 | "module_function" | |
1380 | "module" | |
1381 | "next" | |
1382 | "not" | |
1383 | "or" | |
1384 | "public" | |
1385 | "private" | |
1386 | "protected" | |
1387 | "raise" | |
1388 | "redo" | |
1389 | "rescue" | |
1390 | "retry" | |
1391 | "return" | |
1392 | "then" | |
1393 | "throw" | |
1394 | "super" | |
1395 | "unless" | |
1396 | "undef" | |
1397 | "until" | |
1398 | "when" | |
1399 | "while" | |
1400 | "yield") | |
1401 | t) | |
1402 | "\\)" | |
1403 | ruby-keyword-end-re) | |
1404 | 2) | |
1405 | ;; here-doc beginnings | |
1406 | (list ruby-here-doc-beg-re 0 'font-lock-string-face) | |
1407 | ;; variables | |
1408 | '("\\(^\\|[^_:.@$]\\|\\.\\.\\)\\b\\(nil\\|self\\|true\\|false\\)\\>" | |
1409 | 2 font-lock-variable-name-face) | |
1410 | ;; variables | |
1411 | '("\\(\\$\\([^a-zA-Z0-9 \n]\\|[0-9]\\)\\)\\W" | |
1412 | 1 font-lock-variable-name-face) | |
1413 | '("\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+" | |
1414 | 0 font-lock-variable-name-face) | |
1415 | ;; general delimited string | |
1416 | '("\\(^\\|[[ \t\n<+(,=]\\)\\(%[xrqQwW]?\\([^<[{(a-zA-Z0-9 \n]\\)[^\n\\\\]*\\(\\\\.[^\n\\\\]*\\)*\\(\\3\\)\\)" | |
1417 | (2 font-lock-string-face)) | |
1418 | ;; constants | |
1419 | '("\\(^\\|[^_]\\)\\b\\([A-Z]+\\(\\w\\|_\\)*\\)" | |
1420 | 2 font-lock-type-face) | |
1421 | ;; symbols | |
11473529 | 1422 | '("\\(^\\|[^:]\\)\\(:\\([-+~]@?\\|[/%&|^`]\\|\\*\\*?\\|<\\(<\\|=>?\\)?\\|>[>=]?\\|===?\\|=~\\|![~=]?\\|\\[\\]=?\\|\\(\\w\\|_\\)+\\([!?=]\\|\\b_*\\)\\|#{[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\)\\)" |
c7fbbc3c CY |
1423 | 2 font-lock-reference-face) |
1424 | ;; expression expansion | |
1425 | '("#\\({[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\|\\(\\$\\|@\\|@@\\)\\(\\w\\|_\\)+\\)" | |
1426 | 0 font-lock-variable-name-face t) | |
1427 | ;; warn lower camel case | |
1428 | ;'("\\<[a-z]+[a-z0-9]*[A-Z][A-Za-z0-9]*\\([!?]?\\|\\>\\)" | |
1429 | ; 0 font-lock-warning-face) | |
1430 | ) | |
ee61fe97 | 1431 | "Additional expressions to highlight in Ruby mode.") |
c7fbbc3c | 1432 | |
cf38dd42 SM |
1433 | (defvar electric-indent-chars) |
1434 | ||
c7fbbc3c | 1435 | ;;;###autoload |
cf38dd42 | 1436 | (define-derived-mode ruby-mode prog-mode "Ruby" |
c7fbbc3c CY |
1437 | "Major mode for editing Ruby scripts. |
1438 | \\[ruby-indent-line] properly indents subexpressions of multi-line | |
1439 | class, module, def, if, while, for, do, and case statements, taking | |
1440 | nesting into account. | |
1441 | ||
ee61fe97 JB |
1442 | The variable `ruby-indent-level' controls the amount of indentation. |
1443 | ||
c7fbbc3c | 1444 | \\{ruby-mode-map}" |
c7fbbc3c CY |
1445 | (ruby-mode-variables) |
1446 | ||
1447 | (set (make-local-variable 'imenu-create-index-function) | |
1448 | 'ruby-imenu-create-index) | |
1449 | (set (make-local-variable 'add-log-current-defun-function) | |
1450 | 'ruby-add-log-current-method) | |
1451 | ||
1452 | (add-hook | |
cf38dd42 | 1453 | (cond ((boundp 'before-save-hook) 'before-save-hook) |
c7fbbc3c CY |
1454 | ((boundp 'write-contents-functions) 'write-contents-functions) |
1455 | ((boundp 'write-contents-hooks) 'write-contents-hooks)) | |
cf38dd42 SM |
1456 | 'ruby-mode-set-encoding nil 'local) |
1457 | ||
1458 | (set (make-local-variable 'electric-indent-chars) | |
1459 | (append '(?\{ ?\}) (if (boundp 'electric-indent-chars) | |
1460 | (default-value 'electric-indent-chars)))) | |
c7fbbc3c CY |
1461 | |
1462 | (set (make-local-variable 'font-lock-defaults) | |
1463 | '((ruby-font-lock-keywords) nil nil)) | |
1464 | (set (make-local-variable 'font-lock-keywords) | |
1465 | ruby-font-lock-keywords) | |
1466 | (set (make-local-variable 'font-lock-syntax-table) | |
1467 | ruby-font-lock-syntax-table) | |
c7fbbc3c | 1468 | |
cf38dd42 SM |
1469 | (if (eval-when-compile (fboundp 'syntax-propertize-rules)) |
1470 | (set (make-local-variable 'syntax-propertize-function) | |
1471 | #'ruby-syntax-propertize-function) | |
1472 | (set (make-local-variable 'font-lock-syntactic-keywords) | |
1473 | ruby-font-lock-syntactic-keywords))) | |
c7fbbc3c CY |
1474 | |
1475 | ;;; Invoke ruby-mode when appropriate | |
1476 | ||
1477 | ;;;###autoload | |
a7610c52 | 1478 | (add-to-list 'auto-mode-alist (cons (purecopy "\\.rb\\'") 'ruby-mode)) |
c7fbbc3c CY |
1479 | |
1480 | ;;;###autoload | |
4d270537 | 1481 | (dolist (name (list "ruby" "rbx" "jruby" "ruby1.9" "ruby1.8")) |
a7610c52 | 1482 | (add-to-list 'interpreter-mode-alist (cons (purecopy name) 'ruby-mode))) |
c7fbbc3c CY |
1483 | |
1484 | (provide 'ruby-mode) | |
1485 | ||
bb472684 | 1486 | ;; arch-tag: e6ecc893-8005-420c-b7f9-34ab99a1fff9 |
c7fbbc3c | 1487 | ;;; ruby-mode.el ends here |