forked from eschulte/rinari
-
Notifications
You must be signed in to change notification settings - Fork 1
/
ruby-mode.el
1333 lines (1234 loc) · 42.1 KB
/
ruby-mode.el
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
;;; ruby-mode.el --- Major mode for editing Ruby files
;; Copyright (C) 1994-2008 Yukihiro Matsumoto, Nobuyoshi Nakada, and contributors
;; Author: Yukihiro Matsumoto
;; Created: Fri Feb 4 14:49:13 JST 1994
;; Keywords: languages
;; This file is not yet part of GNU Emacs.
;;; Commentary:
;; Provides font-locking and indentation support for editing Ruby code.
;;; Todo:
;; set interpreter-mode-alist with autoload?
;; various docstrings labelled below
;; Taken from Ruby SVN revision 16028; need to port recent changes.
;;; Code:
(eval-when-compile (require 'cl))
(defconst ruby-block-beg-re
"class\\|module\\|def\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin\\|do"
"Regexp to match the beginning of blocks in ruby-mode.")
(defconst ruby-non-block-do-re
"\\(while\\|until\\|for\\|rescue\\)\\>[^_]"
"Regexp to match keywords that nest without blocks.")
(defconst ruby-indent-beg-re
"\\(\\s *\\(class\\|module\\|def\\)\\)\\|if\\|unless\\|case\\|while\\|until\\|for\\|begin"
"Regexp to match where the indentation gets deeper.")
(defconst ruby-modifier-beg-re
"if\\|unless\\|while\\|until"
"Regexp to match modifiers same as the beginning of blocks.")
(defconst ruby-modifier-re
(concat ruby-modifier-beg-re "\\|rescue")
"Regexp to match modifiers.")
(defconst ruby-block-mid-re
"then\\|else\\|elsif\\|when\\|rescue\\|ensure"
"Regexp to match where the indentation gets shallower in middle of block statements.")
(defconst ruby-block-op-re
"and\\|or\\|not"
"Regexp to match boolean keywords.")
(defconst ruby-block-hanging-re
(concat ruby-modifier-beg-re "\\|" ruby-block-op-re)
"Regexp to match keywords that begin a new indentation level.")
(defconst ruby-block-end-re "\\<end\\>"
"Regexp to match closing of a block.")
(defconst ruby-here-doc-beg-re
"\\(<\\)<\\(-\\)?\\(\\([a-zA-Z0-9_]+\\)\\|[\"]\\([^\"]+\\)[\"]\\|[']\\([^']+\\)[']\\)"
"Regexp to match heredocs.")
(defconst ruby-here-doc-end-re
"^\\([ \t]+\\)?\\(.*\\)\\(.\\)$")
(defun ruby-here-doc-end-match ()
"Return a regexp to find the end of the last matched heredoc."
(concat "^"
(if (match-string 2) "[ \t]*" nil)
(regexp-quote
(or (match-string 4)
(match-string 5)
(match-string 6)))))
(defun ruby-here-doc-beg-match ()
(let ((contents (regexp-quote (concat (match-string 2) (match-string 3)))))
(concat "<<"
(let ((match (match-string 1)))
(if (and match (> (length match) 0))
(concat "\\(?:-\\([\"']?\\)\\|\\([\"']\\)" (match-string 1) "\\)"
contents "\\(\\1\\|\\2\\)")
(concat "-?\\([\"']\\|\\)" contents "\\1"))))))
(defconst ruby-delimiter
(concat "[?$/%(){}#\"'`.:]\\|<<\\|\\[\\|\\]\\|\\<\\("
ruby-block-beg-re
"\\)\\>\\|" ruby-block-end-re
"\\|^=begin\\|" ruby-here-doc-beg-re)
"Regexp to match things that indicate a new area of code.")
(defconst ruby-negative
(concat "^[ \t]*\\(\\(" ruby-block-mid-re "\\)\\>\\|"
ruby-block-end-re "\\|}\\|\\]\\)")
"Regexp to match where the indentation gets shallower.")
(defconst ruby-operator-re "[-,.+*/%&|^~=<>:]"
"Regexp to match operators.")
(defconst ruby-symbol-chars "a-zA-Z0-9_"
"List of characters that symbol names may contain.")
(defconst ruby-symbol-re (concat "[" ruby-symbol-chars "]")
"Regexp to match symbols.")
(defvar ruby-mode-abbrev-table nil
"Abbrev table in use in ruby-mode buffers.")
(define-abbrev-table 'ruby-mode-abbrev-table ())
(defvar ruby-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "{" 'ruby-electric-brace)
(define-key map "}" 'ruby-electric-brace)
(define-key map "\M-\C-a" 'ruby-beginning-of-defun)
(define-key map "\M-\C-e" 'ruby-end-of-defun)
(define-key map "\M-\C-b" 'ruby-backward-sexp)
(define-key map "\M-\C-f" 'ruby-forward-sexp)
(define-key map "\M-\C-k" 'ruby-kill-sexp)
(define-key map "\M-\C-p" 'ruby-beginning-of-block)
(define-key map "\M-\C-n" 'ruby-end-of-block)
(define-key map "\M-\C-h" 'ruby-mark-defun)
(define-key map "\M-\C-q" 'ruby-indent-exp)
(define-key map "\t" 'ruby-indent-line)
(define-key map "\C-c\C-e" 'ruby-insert-end)
(define-key map "\C-j" 'ruby-reindent-then-newline-and-indent)
(define-key map "\C-m" 'newline)
map)
"Keymap used in ruby-mode.")
(defvar ruby-mode-syntax-table
(let ((table (make-syntax-table)))
(modify-syntax-entry ?\' "\"" table)
(modify-syntax-entry ?\" "\"" table)
(modify-syntax-entry ?\` "\"" table)
(modify-syntax-entry ?# "<" table)
(modify-syntax-entry ?\n ">" table)
(modify-syntax-entry ?\\ "\\" table)
(modify-syntax-entry ?$ "." table)
(modify-syntax-entry ?? "_" table)
(modify-syntax-entry ?_ "_" table)
(modify-syntax-entry ?< "." table)
(modify-syntax-entry ?> "." table)
(modify-syntax-entry ?& "." table)
(modify-syntax-entry ?| "." table)
(modify-syntax-entry ?% "." table)
(modify-syntax-entry ?= "." table)
(modify-syntax-entry ?/ "." table)
(modify-syntax-entry ?+ "." table)
(modify-syntax-entry ?* "." table)
(modify-syntax-entry ?- "." table)
(modify-syntax-entry ?\; "." table)
(modify-syntax-entry ?\( "()" table)
(modify-syntax-entry ?\) ")(" table)
(modify-syntax-entry ?\{ "(}" table)
(modify-syntax-entry ?\} "){" table)
(modify-syntax-entry ?\[ "(]" table)
(modify-syntax-entry ?\] ")[" table)
table)
"Syntax table to use in ruby-mode.")
(defcustom ruby-indent-tabs-mode nil
"*Indentation can insert tabs in ruby mode if this is non-nil."
:type 'boolean :group 'ruby)
(defcustom ruby-indent-level 2
"*Indentation of ruby statements."
:type 'integer :group 'ruby)
(defcustom ruby-comment-column 32
"*Indentation column of comments."
:type 'integer :group 'ruby)
(defcustom ruby-deep-arglist t
"*Deep indent lists in parenthesis when non-nil.
Also ignores spaces after parenthesis when 'space."
:group 'ruby)
(defcustom ruby-deep-indent-paren '(?\( ?\[ ?\] t)
"*Deep indent lists in parenthesis when non-nil. t means continuous line.
Also ignores spaces after parenthesis when 'space."
:group 'ruby)
(defcustom ruby-deep-indent-paren-style 'space
"Default deep indent style."
:options '(t nil space) :group 'ruby)
(defcustom ruby-encoding-map '((shift_jis . cp932) (shift-jis . cp932))
"Alist to map encoding name from emacs to ruby."
:group 'ruby)
(defcustom ruby-use-encoding-map t
"*Use `ruby-encoding-map' to set encoding magic comment if this is non-nil."
:type 'boolean :group 'ruby)
(defun ruby-imenu-create-index-in-block (prefix beg end)
"Create an imenu index of methods inside a block."
(let ((index-alist '())
name next pos decl sing)
(goto-char beg)
(while (re-search-forward "^\\s *\\(\\(class\\>\\(\\s *<<\\)?\\|module\\>\\)\\s *\\([^\(<\n ]+\\)\\|\\(def\\|alias\\)\\>\\s *\\([^\(\n ]+\\)\\)" end t)
(setq sing (match-beginning 3))
(setq decl (match-string 5))
(setq next (match-end 0))
(setq name (or (match-string 4) (match-string 6)))
(setq pos (match-beginning 0))
(cond
((string= "alias" decl)
(if prefix (setq name (concat prefix name)))
(push (cons name pos) index-alist))
((string= "def" decl)
(if prefix
(setq name
(cond
((string-match "^self\." name)
(concat (substring prefix 0 -1) (substring name 4)))
(t (concat prefix name)))))
(push (cons name pos) index-alist)
(ruby-accurate-end-of-block end))
(t
(if (string= "self" name)
(if prefix (setq name (substring prefix 0 -1)))
(if prefix (setq name (concat (substring prefix 0 -1) "::" name)))
(push (cons name pos) index-alist))
(ruby-accurate-end-of-block end)
(setq beg (point))
(setq index-alist
(nconc (ruby-imenu-create-index-in-block
(concat name (if sing "." "#"))
next beg) index-alist))
(goto-char beg))))
index-alist))
(defun ruby-imenu-create-index ()
"Create an imenu index of all methods in a file."
(nreverse (ruby-imenu-create-index-in-block nil (point-min) nil)))
;; TODO: Doc'd up to here
(defun ruby-accurate-end-of-block (&optional end)
;; TODO: doc
(let (state)
(or end (setq end (point-max)))
(while (and (setq state (apply 'ruby-parse-partial end state))
(>= (nth 2 state) 0) (< (point) end)))))
(defun ruby-mode-variables ()
"Set up initial local variables for ruby-mode."
(set-syntax-table ruby-mode-syntax-table)
(setq local-abbrev-table ruby-mode-abbrev-table)
(setq case-fold-search nil)
(setq indent-tabs-mode ruby-indent-tabs-mode)
(set (make-local-variable 'indent-line-function) 'ruby-indent-line)
(set (make-local-variable 'require-final-newline) t)
(set (make-variable-buffer-local 'comment-start) "# ")
(set (make-variable-buffer-local 'comment-end) "")
(set (make-variable-buffer-local 'comment-column) ruby-comment-column)
(set (make-variable-buffer-local 'comment-start-skip) "#+ *")
(set (make-local-variable 'parse-sexp-ignore-comments) t)
(make-local-variable 'parse-sexp-lookup-properties)
(setq parse-sexp-lookup-properties t)
(set (make-local-variable 'paragraph-start) (concat "$\\|" page-delimiter))
(set (make-local-variable 'paragraph-separate) paragraph-start)
(set (make-local-variable 'paragraph-ignore-fill-prefix) t))
(defun ruby-mode-set-encoding ()
;; TODO: doc throughout function
(save-excursion
(widen)
(goto-char (point-min))
(when (re-search-forward "[^\0-\177]" nil t)
(goto-char (point-min))
(let ((coding-system
(or coding-system-for-write
buffer-file-coding-system)))
(if coding-system
(setq coding-system
(or (coding-system-get coding-system 'mime-charset)
(coding-system-change-eol-conversion coding-system nil))))
(setq coding-system
(if coding-system
(symbol-name
(or (and ruby-use-encoding-map
(cdr (assq coding-system ruby-encoding-map)))
coding-system))
"ascii-8bit"))
(if (looking-at "^#![^\n]*ruby") (beginning-of-line 2))
(cond ((looking-at "\\s *#.*-\*-\\s *\\(en\\)?coding\\s *:\\s *\\([-a-z0-9_]*\\)\\s *\\(;\\|-\*-\\)")
(unless (string= (match-string 2) coding-system)
(goto-char (match-beginning 2))
(delete-region (point) (match-end 2))
(and (looking-at "-\*-")
(let ((n (skip-chars-backward " ")))
(cond ((= n 0) (insert " ") (backward-char))
((= n -1) (insert " "))
((forward-char)))))
(insert coding-system)))
((looking-at "\\s *#.*coding\\s *[:=]"))
(t (insert "# -*- coding: " coding-system " -*-\n")))))))
;;;###autoload
(defun ruby-mode ()
"Major mode for editing ruby scripts.
\\[ruby-indent-line] properly indents subexpressions of multi-line
class, module, def, if, while, for, do, and case statements, taking
nesting into account.
The variable ruby-indent-level controls the amount of indentation.
\\{ruby-mode-map}"
(interactive)
(kill-all-local-variables)
(use-local-map ruby-mode-map)
(setq mode-name "Ruby")
(setq major-mode 'ruby-mode)
(ruby-mode-variables)
(set (make-local-variable 'imenu-create-index-function)
'ruby-imenu-create-index)
(set (make-local-variable 'add-log-current-defun-function)
'ruby-add-log-current-method)
(add-hook 'before-save-hook 'ruby-mode-set-encoding nil t)
(set (make-local-variable 'font-lock-defaults)
'((ruby-font-lock-keywords) nil nil))
(set (make-local-variable 'font-lock-keywords)
ruby-font-lock-keywords)
(set (make-local-variable 'font-lock-syntax-table)
ruby-font-lock-syntax-table)
(set (make-local-variable 'font-lock-syntactic-keywords)
ruby-font-lock-syntactic-keywords)
(run-mode-hooks 'ruby-mode-hook))
(defun ruby-current-indentation ()
"Return the indentation level of current line."
(save-excursion
(beginning-of-line)
(back-to-indentation)
(current-column)))
(defun ruby-indent-line (&optional flag)
"Correctly indent the current line."
(interactive)
(ruby-indent-to (ruby-calculate-indent)))
(defun ruby-indent-command ()
(interactive)
(ruby-indent-line t))
(defun ruby-indent-to (x)
;; TODO: doc
(if x
(let (shift top beg)
(and (< x 0) (error "invalid nest"))
(setq shift (current-column))
(beginning-of-line)
(setq beg (point))
(back-to-indentation)
(setq top (current-column))
(skip-chars-backward " \t")
(if (>= shift top) (setq shift (- shift top))
(setq shift 0))
(if (and (bolp)
(= x top))
(move-to-column (+ x shift))
(move-to-column top)
(delete-region beg (point))
(beginning-of-line)
(indent-to x)
(move-to-column (+ x shift))))))
(defun ruby-special-char-p (&optional pnt)
;; TODO: doc
(setq pnt (or pnt (point)))
(let ((c (char-before pnt)) (b (and (< (point-min) pnt) (char-before (1- pnt)))))
(cond ((or (eq c ??) (eq c ?$)))
((and (eq c ?:) (or (not b) (eq (char-syntax b) ? ))))
((eq c ?\\) (eq b ??)))))
(defun ruby-expr-beg (&optional option)
;; TODO: doc
(save-excursion
(store-match-data nil)
(let ((space (skip-chars-backward " \t"))
(start (point)))
(cond
((bolp) t)
((progn
(forward-char -1)
(and (looking-at "\\?")
(or (eq (char-syntax (char-before (point))) ?w)
(ruby-special-char-p))))
nil)
((and (eq option 'heredoc) (< space 0)) t)
((or (looking-at ruby-operator-re)
(looking-at "[\\[({,;]")
(and (looking-at "[!?]")
(or (not (eq option 'modifier))
(bolp)
(save-excursion (forward-char -1) (looking-at "\\Sw$"))))
(and (looking-at ruby-symbol-re)
(skip-chars-backward ruby-symbol-chars)
(cond
((or (looking-at (concat "\\<\\(" ruby-block-beg-re
"|" ruby-block-op-re
"|" ruby-block-mid-re "\\)\\>")))
(goto-char (match-end 0))
(not (looking-at "\\s_")))
((eq option 'expr-qstr)
(looking-at "[a-zA-Z][a-zA-z0-9_]* +%[^ \t]"))
((eq option 'expr-re)
(looking-at "[a-zA-Z][a-zA-z0-9_]* +/[^ \t]"))
(t nil)))))))))
(defun ruby-forward-string (term &optional end no-error expand)
;; TODO: doc
(let ((n 1) (c (string-to-char term))
(re (if expand
(concat "[^\\]\\(\\\\\\\\\\)*\\([" term "]\\|\\(#{\\)\\)")
(concat "[^\\]\\(\\\\\\\\\\)*[" term "]"))))
(while (and (re-search-forward re end no-error)
(if (match-beginning 3)
(ruby-forward-string "}{" end no-error nil)
(> (setq n (if (eq (char-before (point)) c)
(1- n) (1+ n))) 0)))
(forward-char -1))
(cond ((zerop n))
(no-error nil)
((error "unterminated string")))))
(defun ruby-deep-indent-paren-p (c)
;; TODO: doc
(cond ((listp ruby-deep-indent-paren)
(let ((deep (assoc c ruby-deep-indent-paren)))
(cond (deep
(or (cdr deep) ruby-deep-indent-paren-style))
((memq c ruby-deep-indent-paren)
ruby-deep-indent-paren-style))))
((eq c ruby-deep-indent-paren) ruby-deep-indent-paren-style)
((eq c ?\( ) ruby-deep-arglist)))
(defun ruby-parse-partial (&optional end in-string nest depth pcol indent)
;; TODO: doc throughout function
(or depth (setq depth 0))
(or indent (setq indent 0))
(when (re-search-forward ruby-delimiter end 'move)
(let ((pnt (point)) w re expand)
(goto-char (match-beginning 0))
(cond
((and (memq (char-before) '(?@ ?$)) (looking-at "\\sw"))
(goto-char pnt))
((looking-at "[\"`]") ;skip string
(cond
((and (not (eobp))
(ruby-forward-string (buffer-substring (point) (1+ (point))) end t t))
nil)
(t
(setq in-string (point))
(goto-char end))))
((looking-at "'")
(cond
((and (not (eobp))
(re-search-forward "[^\\]\\(\\\\\\\\\\)*'" end t))
nil)
(t
(setq in-string (point))
(goto-char end))))
((looking-at "/=")
(goto-char pnt))
((looking-at "/")
(cond
((and (not (eobp)) (ruby-expr-beg 'expr-re))
(if (ruby-forward-string "/" end t t)
nil
(setq in-string (point))
(goto-char end)))
(t
(goto-char pnt))))
((looking-at "%")
(cond
((and (not (eobp))
(ruby-expr-beg 'expr-qstr)
(not (looking-at "%="))
(looking-at "%[QqrxWw]?\\([^a-zA-Z0-9 \t\n]\\)"))
(goto-char (match-beginning 1))
(setq expand (not (memq (char-before) '(?q ?w))))
(setq w (match-string 1))
(cond
((string= w "[") (setq re "]["))
((string= w "{") (setq re "}{"))
((string= w "(") (setq re ")("))
((string= w "<") (setq re "><"))
((and expand (string= w "\\"))
(setq w (concat "\\" w))))
(unless (cond (re (ruby-forward-string re end t expand))
(expand (ruby-forward-string w end t t))
(t (re-search-forward
(if (string= w "\\")
"\\\\[^\\]*\\\\"
(concat "[^\\]\\(\\\\\\\\\\)*" w))
end t)))
(setq in-string (point))
(goto-char end)))
(t
(goto-char pnt))))
((looking-at "\\?") ;skip ?char
(cond
((and (ruby-expr-beg)
(looking-at "?\\(\\\\C-\\|\\\\M-\\)*\\\\?."))
(goto-char (match-end 0)))
(t
(goto-char pnt))))
((looking-at "\\$") ;skip $char
(goto-char pnt)
(forward-char 1))
((looking-at "#") ;skip comment
(forward-line 1)
(goto-char (point)))
((looking-at "[\\[{(]")
(let ((deep (ruby-deep-indent-paren-p (char-after))))
(if (and deep (or (not (eq (char-after) ?\{)) (ruby-expr-beg)))
(progn
(and (eq deep 'space) (looking-at ".\\s +[^# \t\n]")
(setq pnt (1- (match-end 0))))
(setq nest (cons (cons (char-after (point)) pnt) nest))
(setq pcol (cons (cons pnt depth) pcol))
(setq depth 0))
(setq nest (cons (cons (char-after (point)) pnt) nest))
(setq depth (1+ depth))))
(goto-char pnt))
((looking-at "[])}]")
(if (ruby-deep-indent-paren-p (matching-paren (char-after)))
(setq depth (cdr (car pcol)) pcol (cdr pcol))
(setq depth (1- depth)))
(setq nest (cdr nest))
(goto-char pnt))
((looking-at ruby-block-end-re)
(if (or (and (not (bolp))
(progn
(forward-char -1)
(setq w (char-after (point)))
(or (eq ?_ w)
(eq ?. w))))
(progn
(goto-char pnt)
(setq w (char-after (point)))
(or (eq ?_ w)
(eq ?! w)
(eq ?? w))))
nil
(setq nest (cdr nest))
(setq depth (1- depth)))
(goto-char pnt))
((looking-at "def\\s +[^(\n;]*")
(if (or (bolp)
(progn
(forward-char -1)
(not (eq ?_ (char-after (point))))))
(progn
(setq nest (cons (cons nil pnt) nest))
(setq depth (1+ depth))))
(goto-char (match-end 0)))
((looking-at (concat "\\<\\(" ruby-block-beg-re "\\)\\>"))
(and
(save-match-data
(or (not (looking-at "do\\>[^_]"))
(save-excursion
(back-to-indentation)
(not (looking-at ruby-non-block-do-re)))))
(or (bolp)
(progn
(forward-char -1)
(setq w (char-after (point)))
(not (or (eq ?_ w)
(eq ?. w)))))
(goto-char pnt)
(setq w (char-after (point)))
(not (eq ?_ w))
(not (eq ?! w))
(not (eq ?? w))
(skip-chars-forward " \t")
(goto-char (match-beginning 0))
(or (not (looking-at ruby-modifier-re))
(ruby-expr-beg 'modifier))
(goto-char pnt)
(setq nest (cons (cons nil pnt) nest))
(setq depth (1+ depth)))
(goto-char pnt))
((looking-at ":\\(['\"]\\)")
(goto-char (match-beginning 1))
(ruby-forward-string (buffer-substring (match-beginning 1) (match-end 1)) end))
((looking-at ":\\([-,.+*/%&|^~<>]=?\\|===?\\|<=>\\)")
(goto-char (match-end 0)))
((looking-at ":\\([a-zA-Z_][a-zA-Z_0-9]*[!?=]?\\)?")
(goto-char (match-end 0)))
((or (looking-at "\\.\\.\\.?")
(looking-at "\\.[0-9]+")
(looking-at "\\.[a-zA-Z_0-9]+")
(looking-at "\\."))
(goto-char (match-end 0)))
((looking-at "^=begin")
(if (re-search-forward "^=end" end t)
(forward-line 1)
(setq in-string (match-end 0))
(goto-char end)))
((looking-at "<<")
(cond
((and (ruby-expr-beg 'heredoc)
(looking-at "<<\\(-\\)?\\(\\([\"'`]\\)\\([^\n]+?\\)\\3\\|\\(?:\\sw\\|\\s_\\)+\\)"))
(setq re (regexp-quote (or (match-string 4) (match-string 2))))
(if (match-beginning 1) (setq re (concat "\\s *" re)))
(let* ((id-end (goto-char (match-end 0)))
(line-end-position (save-excursion (end-of-line) (point)))
(state (list in-string nest depth pcol indent)))
;; parse the rest of the line
(while (and (> line-end-position (point))
(setq state (apply 'ruby-parse-partial
line-end-position state))))
(setq in-string (car state)
nest (nth 1 state)
depth (nth 2 state)
pcol (nth 3 state)
indent (nth 4 state))
;; skip heredoc section
(if (re-search-forward (concat "^" re "$") end 'move)
(forward-line 1)
(setq in-string id-end)
(goto-char end))))
(t
(goto-char pnt))))
((looking-at "^__END__$")
(goto-char pnt))
((looking-at ruby-here-doc-beg-re)
(if (re-search-forward (ruby-here-doc-end-match)
indent-point t)
(forward-line 1)
(setq in-string (match-end 0))
(goto-char indent-point)))
(t
(error (format "bad string %s"
(buffer-substring (point) pnt)))))))
(list in-string nest depth pcol))
(defun ruby-parse-region (start end)
;; TODO: doc
(let (state)
(save-excursion
(if start
(goto-char start)
(ruby-beginning-of-indent))
(save-restriction
(narrow-to-region (point) end)
(while (and (> end (point))
(setq state (apply 'ruby-parse-partial end state))))))
(list (nth 0 state) ; in-string
(car (nth 1 state)) ; nest
(nth 2 state) ; depth
(car (car (nth 3 state)))))) ; pcol
;(car (nth 5 state)) ; indent
(defun ruby-indent-size (pos nest)
;; TODO: doc
(+ pos (* (or nest 1) ruby-indent-level)))
(defun ruby-calculate-indent (&optional parse-start)
;; TODO: doc throughout function
(save-excursion
(beginning-of-line)
(let ((indent-point (point))
state bol eol begin op-end
(paren (progn (skip-syntax-forward " ")
(and (char-after) (matching-paren (char-after)))))
(indent 0))
(if parse-start
(goto-char parse-start)
(ruby-beginning-of-indent)
(setq parse-start (point)))
(back-to-indentation)
(setq indent (current-column))
(setq state (ruby-parse-region parse-start indent-point))
(cond
((nth 0 state) ; within string
(setq indent nil)) ; do nothing
((car (nth 1 state)) ; in paren
(goto-char (setq begin (cdr (nth 1 state))))
(let ((deep (ruby-deep-indent-paren-p (car (nth 1 state)))))
(if deep
(cond ((and (eq deep t) (eq (car (nth 1 state)) paren))
(skip-syntax-backward " ")
(setq indent (1- (current-column))))
((let ((s (ruby-parse-region (point) indent-point)))
(and (nth 2 s) (> (nth 2 s) 0)
(or (goto-char (cdr (nth 1 s))) t)))
(forward-word -1)
(setq indent (ruby-indent-size (current-column) (nth 2 state))))
(t
(setq indent (current-column))
(cond ((eq deep 'space))
(paren (setq indent (1- indent)))
(t (setq indent (ruby-indent-size (1- indent) 1))))))
(if (nth 3 state) (goto-char (nth 3 state))
(goto-char parse-start) (back-to-indentation))
(setq indent (ruby-indent-size (current-column) (nth 2 state))))
(and (eq (car (nth 1 state)) paren)
(ruby-deep-indent-paren-p (matching-paren paren))
(search-backward (char-to-string paren))
(setq indent (current-column)))))
((and (nth 2 state) (> (nth 2 state) 0)) ; in nest
(if (null (cdr (nth 1 state)))
(error "invalid nest"))
(goto-char (cdr (nth 1 state)))
(forward-word -1) ; skip back a keyword
(setq begin (point))
(cond
((looking-at "do\\>[^_]") ; iter block is a special case
(if (nth 3 state) (goto-char (nth 3 state))
(goto-char parse-start) (back-to-indentation))
(setq indent (ruby-indent-size (current-column) (nth 2 state))))
(t
(setq indent (+ (current-column) ruby-indent-level)))))
((and (nth 2 state) (< (nth 2 state) 0)) ; in negative nest
(setq indent (ruby-indent-size (current-column) (nth 2 state)))))
(when indent
(goto-char indent-point)
(end-of-line)
(setq eol (point))
(beginning-of-line)
(cond
((and (not (ruby-deep-indent-paren-p paren))
(re-search-forward ruby-negative eol t))
(and (not (eq ?_ (char-after (match-end 0))))
(setq indent (- indent ruby-indent-level))))
((and
(save-excursion
(beginning-of-line)
(not (bobp)))
(or (ruby-deep-indent-paren-p t)
(null (car (nth 1 state)))))
;; goto beginning of non-empty no-comment line
(let (end done)
(while (not done)
(skip-chars-backward " \t\n")
(setq end (point))
(beginning-of-line)
(if (re-search-forward "^\\s *#" end t)
(beginning-of-line)
(setq done t))))
(setq bol (point))
(end-of-line)
;; skip the comment at the end
(skip-chars-backward " \t")
(let (end (pos (point)))
(beginning-of-line)
(while (and (re-search-forward "#" pos t)
(setq end (1- (point)))
(or (ruby-special-char-p end)
(and (setq state (ruby-parse-region parse-start end))
(nth 0 state))))
(setq end nil))
(goto-char (or end pos))
(skip-chars-backward " \t")
(setq begin (if (and end (nth 0 state)) pos (cdr (nth 1 state))))
(setq state (ruby-parse-region parse-start (point))))
(or (bobp) (forward-char -1))
(and
(or (and (looking-at ruby-symbol-re)
(skip-chars-backward ruby-symbol-chars)
(looking-at (concat "\\<\\(" ruby-block-hanging-re "\\)\\>"))
(not (eq (point) (nth 3 state)))
(save-excursion
(goto-char (match-end 0))
(not (looking-at "[a-z_]"))))
(and (looking-at ruby-operator-re)
(not (ruby-special-char-p))
;; operator at the end of line
(let ((c (char-after (point))))
(and
;;; (or (null begin)
;;; (save-excursion
;;; (goto-char begin)
;;; (skip-chars-forward " \t")
;;; (not (or (eolp) (looking-at "#")
;;; (and (eq (car (nth 1 state)) ?{)
;;; (looking-at "|"))))))
(or (not (eq ?/ c))
(null (nth 0 (ruby-parse-region (or begin parse-start) (point)))))
(or (not (eq ?| (char-after (point))))
(save-excursion
(or (eolp) (forward-char -1))
(cond
((search-backward "|" nil t)
(skip-chars-backward " \t\n")
(and (not (eolp))
(progn
(forward-char -1)
(not (looking-at "{")))
(progn
(forward-word -1)
(not (looking-at "do\\>[^_]")))))
(t t))))
(not (eq ?, c))
(setq op-end t)))))
(setq indent
(cond
((and
(null op-end)
(not (looking-at (concat "\\<\\(" ruby-block-hanging-re "\\)\\>")))
(eq (ruby-deep-indent-paren-p t) 'space)
(not (bobp)))
(widen)
(goto-char (or begin parse-start))
(skip-syntax-forward " ")
(current-column))
((car (nth 1 state)) indent)
(t
(+ indent ruby-indent-level))))))))
(goto-char indent-point)
(beginning-of-line)
(skip-syntax-forward " ")
(if (looking-at "\\.[^.]")
(+ indent ruby-indent-level)
indent))))
(defun ruby-electric-brace (arg)
;; TODO: doc
(interactive "P")
(insert-char last-command-char 1)
(ruby-indent-line t)
(delete-char -1)
(self-insert-command (prefix-numeric-value arg)))
(eval-when-compile
(defmacro defun-region-command (func args &rest body)
;; TODO: doc
(let ((intr (car body)))
(when (featurep 'xemacs)
(if (stringp intr) (setq intr (cadr body)))
(and (eq (car intr) 'interactive)
(setq intr (cdr intr))
(setcar intr (concat "_" (car intr)))))
(cons 'defun (cons func (cons args body))))))
(defun-region-command ruby-beginning-of-defun (&optional arg)
"Move backward to next beginning-of-defun.
With argument, do this that many times.
Returns t unless search stops due to end of buffer."
(interactive "p")
(and (re-search-backward (concat "^\\(" ruby-block-beg-re "\\)\\b")
nil 'move (or arg 1))
(progn (beginning-of-line) t)))
(defun ruby-beginning-of-indent ()
;; TODO: doc
(and (re-search-backward (concat "^\\(" ruby-indent-beg-re "\\)\\b")
nil 'move)
(progn
(beginning-of-line)
t)))
(defun-region-command ruby-end-of-defun (&optional arg)
"Move forward to next end of defun.
An end of a defun is found by moving forward from the beginning of one."
(interactive "p")
(and (re-search-forward (concat "^\\(" ruby-block-end-re "\\)\\($\\|\\b[^_]\\)")
nil 'move (or arg 1))
(progn (beginning-of-line) t))
(forward-line 1))
(defun ruby-move-to-block (n)
;; TODO: doc
(let (start pos done down)
(setq start (ruby-calculate-indent))
(setq down (looking-at (if (< n 0) ruby-block-end-re
(concat "\\<\\(" ruby-block-beg-re "\\)\\>"))))
(while (and (not done) (not (if (< n 0) (bobp) (eobp))))
(forward-line n)
(cond
((looking-at "^\\s *$"))
((looking-at "^\\s *#"))
((and (> n 0) (looking-at "^=begin\\>"))
(re-search-forward "^=end\\>"))
((and (< n 0) (looking-at "^=end\\>"))
(re-search-backward "^=begin\\>"))
(t
(setq pos (current-indentation))
(cond
((< start pos)
(setq down t))
((and down (= pos start))
(setq done t))
((> start pos)
(setq done t)))))
(if done
(save-excursion
(back-to-indentation)
(if (looking-at (concat "\\<\\(" ruby-block-mid-re "\\)\\>"))
(setq done nil))))))
(back-to-indentation))
(defun-region-command ruby-beginning-of-block (&optional arg)
"Move backward to next beginning-of-block"
(interactive "p")
(ruby-move-to-block (- (or arg 1))))
(defun-region-command ruby-end-of-block (&optional arg)
"Move forward to next beginning-of-block"
(interactive "p")
(ruby-move-to-block (or arg 1)))
(defun-region-command ruby-forward-sexp (&optional cnt)
;; TODO: doc
(interactive "p")
(if (and (numberp cnt) (< cnt 0))
(ruby-backward-sexp (- cnt))
(let ((i (or cnt 1)))
(condition-case nil
(while (> i 0)
(skip-syntax-forward " ")
(cond ((looking-at "\\?\\(\\\\[CM]-\\)*\\\\?\\S ")
(goto-char (match-end 0)))
((progn
(skip-chars-forward ",.:;|&^~=!?\\+\\-\\*")
(looking-at "\\s("))
(goto-char (scan-sexps (point) 1)))
((and (looking-at (concat "\\<\\(" ruby-block-beg-re "\\)\\>"))
(not (eq (char-before (point)) ?.))
(not (eq (char-before (point)) ?:)))
(ruby-end-of-block)
(forward-word 1))
((looking-at "\\(\\$\\|@@?\\)?\\sw")
(while (progn
(while (progn (forward-word 1) (looking-at "_")))
(cond ((looking-at "::") (forward-char 2) t)
((> (skip-chars-forward ".") 0))
((looking-at "\\?\\|!\\(=[~=>]\\|[^~=]\\)")
(forward-char 1) nil)))))
((let (state expr)
(while
(progn
(setq expr (or expr (ruby-expr-beg)
(looking-at "%\\sw?\\Sw\\|[\"'`/]")))
(nth 1 (setq state (apply 'ruby-parse-partial nil state))))
(setq expr t)
(skip-chars-forward "<"))
(not expr))))
(setq i (1- i)))
((error) (forward-word 1)))
i)))
(defun-region-command ruby-backward-sexp (&optional cnt)
;; TODO: doc
(interactive "p")
(if (and (numberp cnt) (< cnt 0))
(ruby-forward-sexp (- cnt))
(let ((i (or cnt 1)))
(condition-case nil
(while (> i 0)
(skip-chars-backward " \t\n,.:;|&^~=!?\\+\\-\\*")
(forward-char -1)
(cond ((looking-at "\\s)")
(goto-char (scan-sexps (1+ (point)) -1))
(case (char-before)
(?% (forward-char -1))
('(?q ?Q ?w ?W ?r ?x)
(if (eq (char-before (1- (point))) ?%) (forward-char -2))))
nil)
((looking-at "\\s\"\\|\\\\\\S_")
(let ((c (char-to-string (char-before (match-end 0)))))
(while (and (search-backward c)
(oddp (skip-chars-backward "\\"))))) ;; TODO: remove call to CL function oddp
nil)
((looking-at "\\s.\\|\\s\\")
(if (ruby-special-char-p) (forward-char -1)))
((looking-at "\\s(") nil)
(t
(forward-char 1)
(while (progn (forward-word -1)
(case (char-before)
(?_ t)
(?. (forward-char -1) t)
((?$ ?@)
(forward-char -1)
(and (eq (char-before) (char-after)) (forward-char -1)))
(?:
(forward-char -1)
(eq (char-before) :)))))
(if (looking-at ruby-block-end-re)
(ruby-beginning-of-block))
nil))
(setq i (1- i)))
((error)))
i)))
(defun ruby-kill-sexp (&optional cnt)
;; TODO: doc
(interactive "P")
(let ((end (progn