-
Notifications
You must be signed in to change notification settings - Fork 125
/
opa-mode.el
849 lines (701 loc) · 30.6 KB
/
opa-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
;;; opa-mode.el --- Major mode for editing OPA programs
;; To automatically use this mode on .opa files, add the following to your
;; .emacs:
;; (autoload 'opa-mode "/usr/share/opa/emacs/opa-mode.el" "OPA editing mode." t)
;; (add-to-list 'auto-mode-alist '("\\.opa$" . opa-mode))
;; user definable variables
;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
(defcustom opa-indent-offset 2
"*Amount of offset per level of indentation"
:type 'integer
:group 'opa)
(defface opa-font-stop-face
'((t
(:foreground "White")
(:background "Red")))
"Opa font stop face"
:group 'opa-faces)
(defface opa-font-ppdebug-face
'((t :weight bold))
"Opa face for ppdebug directives"
:group 'opa-faces)
(defface opa-font-xhtml-face
'((t :inherit font-lock-string-face))
"Opa face to use for XHTML code"
:group 'opa-faces)
(defface opa-font-raw-ident-face
'((t :underline t))
"Opa face for raw idents (between backquotes)"
:group 'opa-faces)
(defface opa-font-doc-directive-face
'((t :foreground "turquoise3"))
"Opa face to use for opadoc directives"
:group 'opa-faces)
(defface opa-font-doc-title-face
'((default (:inherit font-lock-doc-face))
(t (:weight bold)))
"Opa face to use for titles in opadoc"
:group 'opa-faces)
(defface opa-font-directive-face
'((t :foreground "orangered3"))
"Opa face for directives"
:group 'opa-faces)
;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
;; NO USER DEFINABLE VARIABLES BEYOND THIS POINT
(defvar bident-regexp "[a-zA-Z0-9_]*")
(defvar ident-regexp (concat "[a-zA-Z_']" bident-regexp))
(defvar type-ident-regexp (concat "[a-zA-Z_']" bident-regexp))
(defvar dotted-type-ident-regexp (concat "\\(" ident-regexp "\\.\\)*" type-ident-regexp))
(defconst opa-intdent-keywords-cont
'("then" "else" "with" "end" "true" "false" "open"))
(defconst opa-intdent-keywords (append opa-intdent-keywords-cont
'("type" "if" "match" "do" "parser" "xml_parser" "database" "server" "rec" "and" "as" "css" "db" "with" "val"
"import" "import-plugin" "package")))
(defconst opa-directives
'("xml" "typeval" "static_content_directory" "static_resource_directory" "static_source_content" "static_binary_content" "static_include_directory" "catch" "client" "fail" "typeof" "lazy" "lazy_record" "thread_context" "with_thread_context" "throw" "track" "wrap" "unwrap" "callcc" "uncps" "atomic" "js_ident" "expand" "spawn" "wait" "server" "unsafe_cast" "toplevel" "assert" "opensums" "publish" "publish_async" "both" "prefer_client" "prefer_server" "prefer_both" "both_implem" "abstract" "private" "public" "package" "nonexpansive" "async" "compiletime" "sliced_expr" "may_cps" "llarray" "specialize" "specialize_strict" "server_private" "opacapi" "stringifier" "xmlizer" "serializer" "comparator" "deprecated" "todo"))
(defun match-opa-tuple-type (limit)
(when (and (looking-at "( *")
(goto-char (match-end 0))
(match-opa-type limit))
(while (and (looking-at " *, *")
(goto-char (match-end 0))
(match-opa-type limit)))
(when (looking-at " *)")
(goto-char (match-end 0)))))
(defun match-opa-simple-type (limit)
(when (looking-at dotted-type-ident-regexp)
(goto-char (match-end 0))
(let ((data (match-data)))
(if (match-opa-tuple-type limit)
t
(set-match-data data)
t))))
(defun match-opa-nonfun-type (limit)
(cond
((match-opa-tuple-type limit)
t)
((match-opa-simple-type limit)
t)))
;; parsing the lhs of an arrow types ie a comma separated list (perhaps empty) of types
;; @return -1 if nothing was parsed
;; otherwise, the position of the end of the first type parsed
;; (ie before the first comma, if any)
(defun match-opa-arrow-lhs (limit)
(let ((before-first-comma -1))
(when (match-opa-nonfun-type limit)
(setq before-first-comma (match-end 0))
(while (and (looking-at " *, *")
(goto-char (match-end 0))
(match-opa-nonfun-type limit))))
before-first-comma))
;; not parsing a -> b -> c on purpose because is it not valid syntax (anymore)
;; if you modify it, beware that you must parse [a -> c], [a,b -> c], [-> c]
;; but NOT [a,b] or []
(defun match-opa-type (limit)
(let ((before-first-comma (match-opa-arrow-lhs limit)))
(if (and (looking-at " *-> *") ;; if you see an arrow, parse it an a type
(goto-char (match-end 0))
(match-opa-nonfun-type limit))
(progn (goto-char (match-end 0)) t)
;; if you don't see any arrow, two choices
(if (= before-first-comma -1)
;; you didn't parse anything, so you fail in parsing the type
nil
;; you parsed one type (and possibly others with separated commas)
(progn
;; use the first one of these types: in [ident:a,b], only [a]
;; is a valid type since no arrow follows
(set-match-data (list before-first-comma before-first-comma))
;; setting match-data with a wierd value but the following
;; function will read just the second value anyway
t)))))
(defun match-opa-type-annotation (limit)
(when (re-search-forward ": *\\|@typeval( *" limit t)
(goto-char (match-end 0))
(let ((start (if (eq (char-after (match-beginning 0)) ?:)
(match-beginning 0); fontifying the ':'
(match-end 0))))
(when (match-opa-type limit)
(let ((end (match-end 0)))
(set-match-data (list start end))
(<= end limit))))))
(defun match-opa-doc-directive-aux (limit)
(if (re-search-forward "@[a-zA-Z]+" limit t)
(if (is-in-doc-zone) 'succeed 'continue)
'stop))
(defun match-opa-doc-title-aux (limit)
(if (re-search-forward "{[0-9]+\\([^}]*\\)}" limit t)
(if (is-in-doc-zone) 'succeed 'continue)
'stop))
(defun skip-coercion-and-comments (limit)
(let ((continue t))
(while (and continue (< (point) limit))
(looking-at "\s*")
(goto-char (match-end 0))
(if (looking-at ":\s*")
(goto-char (match-end 0))
(if (or (is-in-comment-zone) (is-in-type-zone))
(forward-char)
(setq continue nil))))))
(defun match-opa-binding-aux (limit)
;; matching a.b.c so that in {r with a.b.c = 1} a.b.c highlighted in pink
(if (re-search-forward (concat "\\<" ident-regexp "\\>" "\\(\\.\\<" ident-regexp "\\>\\)*") limit t)
(let ((begin (match-beginning 0)))
(skip-coercion-and-comments limit)
(if (and (looking-at "\s*\\(=\\)\\([a-zA-Z_0-9 ]\\|$\\)") (< (point) limit))
(let ((end (match-end 1)))
(set-match-data (list begin end))
'succeed)
'continue
))
'stop))
(defun match-wrapper (f limit)
(let ((result)
(continue t))
(while continue
(let ((res (funcall f limit)))
(if (eq res 'continue)
t
(if (eq res 'succeed)
(progn
(setq result t)
(setq continue nil))
(progn ; res = 'stop
(setq result nil)
(setq continue nil))))))
result))
(defun match-opa-doc-directive (limit)
(match-wrapper 'match-opa-doc-directive-aux limit))
(defun match-opa-binding (limit)
(match-wrapper 'match-opa-binding-aux limit))
(defun match-opa-doc-title (limit)
(match-wrapper 'match-opa-doc-title-aux limit))
(defun match-invalid-space-aux (limit)
(if (re-search-forward "[a-zA-Z0-9_)]\\( *\\)([^*]" limit t)
(if (is-in-keyword-zone-with-point (match-beginning 0))
; if (1 == 2) shouldn't complain because of the space after "if"
'continue
'succeed)
'stop))
(defun match-invalid-space (limit)
(match-wrapper 'match-invalid-space-aux limit))
(defvar opa-font-lock-keywords
(list
;; bypasses (must be done before other rules in case the bypass contains weird chars, eg: %%+%%)
(cons "%%[^%]*%%" '(0 font-lock-string-face))
(cons "`[^`]*`" '(0 'opa-font-raw-ident-face))
;; directives
(cons (concat "@" (regexp-opt opa-directives 'words)) '(0 'opa-font-directive-face))
;; keywords
(cons (concat "\\(" (regexp-opt opa-intdent-keywords 'words) "\\)" "\\([ \n\t]\\|[^(]\\|$\\)") 1)
;; ppdebug
(cons "#<[^>]*>" '(0 'opa-font-ppdebug-face))
;; type annotation
(cons #'match-opa-type-annotation '(0 font-lock-type-face))
;; let-in
'(match-opa-binding . (0 font-lock-builtin-face keep))
;; operators, separators
(cons (concat "[+*{};\\]") 0)
;; database value declaration
(cons "^\\(db\\) */" 1)
;; subrule name (parser)
;;(cons "\\([a-zA-Z]+\\)\\(=\\)" '((1 font-lock-comment-face) (2 font-lock-builtin-face)))
(cons "[a-zA-Z_]+=" '(0 font-lock-builtin-face))
;; function call
(cons (concat "\\(" ident-regexp "\\(\\." ident-regexp "\\)*\\)(") '(1 font-lock-function-name-face))
;; dot call
(cons (concat "\\." ident-regexp) '(0 font-lock-constant-face))
;; some more operators
(cons "\\(->\\|<-\\|-\\)" 0)
;; invalid spaces between function name and open parenthesis
;(cons "[a-zA-Z0-9_)]\\( *\\)([^*]" '(1 'opa-font-stop-face))
'(match-invalid-space . (1 'opa-font-stop-face))
;; opa-doc directives
(cons 'match-opa-doc-directive '(0 'opa-font-doc-directive-face t))
(cons 'match-opa-doc-title '(1 'opa-font-doc-title-face t))
;; xhtml
'opa-highlights-xhtml
; (cons (concat (mapconcat 'identity '("[,.:=]") "\\|")) '(0 font-lock-builtin-face))
)
"Additional expressions to highlight in OPA mode.")
(put 'opa-mode 'font-lock-defaults '(opa-font-lock-keywords))
(make-variable-buffer-local 'opa-indent-offset)
;; same as tuareg mode, /** for documentation
(defun opa-font-lock-syntactic-face-function (state)
(if (nth 3 state) font-lock-string-face
(let ((start (nth 8 state)))
(if (and (> (point-max) (+ start 2))
(eq (char-after (+ start 2)) ?*)
(not (eq (char-after (+ start 3)) ?*)))
;; This is a documentation comment
font-lock-doc-face
font-lock-comment-face))))
;; Major mode boilerplate
(defmacro inc(a) (list 'setq a (list '1+ a)))
(defmacro dec(a) (list 'setq a (list '1- a)))
;; define a mode-specific abbrev table for those who use such things
(defvar opa-mode-abbrev-table nil
"Abbrev table in use in `opa-mode' buffers.")
(define-abbrev-table 'opa-mode-abbrev-table nil)
(defvar opa-mode-hook nil
"*Hook called by `opa-mode'.")
(defvar opa-mode-syntax-table nil
"Syntax table used in `opa-mode' buffers.")
(if opa-mode-syntax-table
nil
(setq opa-mode-syntax-table (make-syntax-table))
(modify-syntax-entry ?\( "()" opa-mode-syntax-table)
(modify-syntax-entry ?\) ")(" opa-mode-syntax-table)
(modify-syntax-entry ?\[ "(]" opa-mode-syntax-table)
(modify-syntax-entry ?\] ")[" opa-mode-syntax-table)
(modify-syntax-entry ?\{ "(}" opa-mode-syntax-table)
(modify-syntax-entry ?\} "){" opa-mode-syntax-table)
;; double quote are string delimiters
(modify-syntax-entry ?\" "\"" opa-mode-syntax-table)
;; Add operator symbols misassigned in the std table
(modify-syntax-entry ?\* "." opa-mode-syntax-table)
(modify-syntax-entry ?\+ "." opa-mode-syntax-table)
(modify-syntax-entry ?\- "." opa-mode-syntax-table)
(modify-syntax-entry ?\/ "." opa-mode-syntax-table)
(modify-syntax-entry ?\< "." opa-mode-syntax-table)
(modify-syntax-entry ?\= "." opa-mode-syntax-table)
(modify-syntax-entry ?\> "." opa-mode-syntax-table)
(modify-syntax-entry ?\| "." opa-mode-syntax-table)
(modify-syntax-entry ?\; "." opa-mode-syntax-table)
(modify-syntax-entry ?\= "." opa-mode-syntax-table)
; / is first character of comment start
; and last character of comment end
(modify-syntax-entry ?\/ ". 124b" opa-mode-syntax-table)
; * is second character of comment start,
; and first character of comment end
(modify-syntax-entry ?* ". 23n" opa-mode-syntax-table)
; end-of-line finishes // comment
(modify-syntax-entry 10 "> b" opa-mode-syntax-table)
)
(defvar opa-mode-syntax-table-xhtml nil
"Syntax table used in `opa-mode' buffers for xhtml constructs.")
(if opa-mode-syntax-table-xhtml
nil
(setq opa-mode-syntax-table-xhtml (make-syntax-table))
(setq i 0) (while (< i 256)
(modify-syntax-entry i "." opa-mode-syntax-table-xhtml)
(inc i))
)
;;;###autoload
(defun opa-mode ()
"Major mode for editing OPA files"
(interactive)
;; set up local variables
(kill-all-local-variables)
(make-local-variable 'font-lock-defaults)
(make-local-variable 'paragraph-separate)
(make-local-variable 'paragraph-start)
(make-local-variable 'require-final-newline)
(make-local-variable 'comment-start)
(make-local-variable 'comment-end)
(make-local-variable 'comment-start-skip)
(make-local-variable 'comment-column)
; (make-local-variable 'indent-region-function)
; (make-local-variable 'indent-line-function)
;;
(set-syntax-table opa-mode-syntax-table)
; don't know what this does exactly, but the javascript-mode does
; that and it seems to make ?_ a word constituent for the purpose of
; fontification but not for moving the point (awesome!)
(set (make-local-variable 'font-lock-defaults)
(list opa-font-lock-keywords
nil nil '((?_ . "w")) nil))
(setq major-mode 'opa-mode
mode-name "OPA"
local-abbrev-table opa-mode-abbrev-table
font-lock-syntactic-face-function 'opa-font-lock-syntactic-face-function
paragraph-separate "^[ \t]*$"
paragraph-start "^[ \t]*$"
require-final-newline t
comment-start "// "
comment-end ""
comment-start-skip "// *"
comment-column 40
indent-tabs-mode nil
; indent-region-function 'opa-indent-region
; indent-line-function 'opa-indent-line
)
(use-local-map opa-mode-map)
;; Run the mode hook.
(if opa-mode-hook (run-hooks 'opa-mode-hook))
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; various useful functions
(defun buffer-substring1 (pos)
(buffer-substring pos (1+ pos)))
(defun is-in-xhtml-zone ()
(eq (get-text-property (point) 'syntax-table) opa-mode-syntax-table-xhtml))
(defun is-in-ppdebug-zone ()
(eq (get-text-property (point) 'face) 'opa-font-ppdebug-face))
(defun is-in-comment-zone ()
(let ((prop (get-text-property (point) 'face)))
(or (eq prop font-lock-comment-face)
(eq prop font-lock-doc-face))))
(defun is-in-strict-comment-zone ()
(eq (get-text-property (point) 'face) font-lock-comment-face))
(defun is-in-doc-zone ()
(eq (get-text-property (point) 'face) font-lock-doc-face))
(defun is-in-keyword-zone-with-point (p)
(eq (get-text-property p 'face) font-lock-keyword-face))
(defun is-in-keyword-zone ()
(is-in-keyword-zone-with-point (point)))
(defun is-in-string-zone ()
(eq (get-text-property (point) 'face) font-lock-string-face))
(defun is-in-type-zone ()
(eq (get-text-property (point) 'face) font-lock-type-face))
(defun re-search-forward--skipping-comments (re end)
(let ((found nil))
(while (and (not found) (re-search-forward re end t))
(setq found (not (is-in-comment-zone))))
found))
(defun re-search-forward--skipping-strings-comments-ppdebug (re end)
(let ((found nil))
(while (and (not found) (re-search-forward re end t))
(setq found (not (or (is-in-comment-zone) (is-in-string-zone) (is-in-ppdebug-zone)))))
found))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; xhtml parsing and setting face property
; returns the beginning position and sets (point) to the end position
(defun find-nested--skipping-strings-comments (re_open re_close end)
(if (re-search-forward--skipping-strings-comments-ppdebug re_open end)
(let ((b (point))
(re (concat re_open "\\|" re_close))
(deep 1))
(while (and (< (point) end) (re-search-forward--skipping-strings-comments-ppdebug re end))
;(message (concat "find-nested--skipping-strings-comments found at " (int-to-string (point)) " deep is " (int-to-string deep)))
(goto-char (match-beginning 0))
(if (looking-at re_close)
(if (= (dec deep) 0) (setq end (point)))
(inc deep))
(forward-char) ; move to the next char otherwise we will search at the same place
)
b)))
(defun skip-attributes ()
(while (looking-at " +[a-zA-Z][a-zA-Z0-9_:-]* *= *")
(goto-char (match-end 0))
(cond ((looking-at "\"[^\"]*\"")
(goto-char (match-end 0)))
((looking-at "'[^\']*'")
(goto-char (match-end 0)))
((looking-at "{[^}]*}")
(goto-char (match-end 0)))
(t (re-search-forward "[ \t/<>]")
(backward-char)))))
;; starting from point being just after opening tag "tag", search the closing tag
(defun search-xhtml-end (tag)
(skip-attributes)
(if (and (not (equal tag "")) (looking-at "[ \n\t]*/>"))
; <tag/> format
(match-end 0)
(let ((re (concat "</?\\(" tag "\\)?>"))
(end (1- (point-max)))
(deep 1))
(while (and (< (point) end) (re-search-forward--skipping-comments re (point-max)))
;(message (concat "search-xhtml-end looking for " tag " found at " (int-to-string (point)) " deep is " (int-to-string deep)))
(if (equal (buffer-substring1 (1+ (match-beginning 0))) "/")
(if (= (dec deep) 0) (setq end (match-end 0)))
(inc deep)))
;(message (concat "search-xhtml-end looking for " tag " found at " (int-to-string (point)) " deep is " (int-to-string deep)))
(goto-char end)
(point))))
;; search an opening tag before "end"
(defun search-xhtml-beg-raw (end)
(let ((found nil))
(while (and (not found) )
(setq found (not (is-in-comment-zone))))
found))
(defun search-xhtml-beg (end)
(let ((found (re-search-forward--skipping-strings-comments-ppdebug "<\\([a-zA-Z][a-zA-Z0-9:-]*\\|>\\)" end)))
(if (and found (equal (buffer-substring1 (1- (point))) ">"))
(backward-char))
found))
(defun set-xhtml-property (beg end)
(put-text-property beg end 'syntax-table opa-mode-syntax-table-xhtml)
(put-text-property beg end 'face 'opa-font-xhtml-face)
(put-text-property beg end 'font-lock-multiline t)
(save-excursion
(goto-char beg)
(while (re-search-forward--skipping-strings-comments-ppdebug "<\\(/?[a-zA-Z][a-zA-Z0-9-]* */?\\)\\|/>" end)
(if (equal (buffer-substring1 (match-beginning 0)) "<")
(put-text-property (match-beginning 1) (match-end 1) 'face 'font-lock-keyword-face)
; colorize the "/" in "<zzzz .... />"
(put-text-property (match-beginning 0) (1+ (match-beginning 0)) 'face 'font-lock-keyword-face))))
)
(defun set-xhtml-except-braces (beg end)
(goto-char beg)
(let ((beg_brace nil))
(while (setq beg_brace (find-nested--skipping-strings-comments "[^\\]{" "[^\\]}" end))
(set-xhtml-property beg beg_brace)
(setq beg (point))))
(set-xhtml-property beg end))
(defun opa-highlights-xhtml (end)
;(message (concat "opa-highlights-xhtml on " (int-to-string start) ".." (int-to-string end)))
(if (search-xhtml-beg end)
(let* ((b (match-beginning 0))
(tag (buffer-substring (1+ b) (point)))
(e (search-xhtml-end tag)))
;(message (concat "setting xhtml on " (int-to-string b) ".." (int-to-string e)))
(set-xhtml-except-braces b e)
e
)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; compilation
(require 'compile)
(require 'ansi-color)
(setq compilation-error-regexp-alist
'(
;the format of syntax errors (to be unified)
("In \\(.+\\) \\[\\([0-9]+\\):\\([0-9]+\\)-\\([0-9]+\\):\\([0-9]+\\) | global chars=[0-9]+-[0-9]+\\]" 1 (2 . 4) (3 . 5) 1)
;this fallback one presents the advantage that it does also match Ocaml errors and back-traces
("[Ff]ile \\\"?\\([^ \\\"]*?\\)\\\"?, line \\([0-9]+\\), characters \\([0-9]+\\)-\\([0-9]+\\)" 1 2 (3 . 4) 1)
;corresponds to FilePos.to_string
("[Ff]ile \\\"?\\([^ \\\"]*?\\)\\\"?, line [0-9]+, characters [0-9]+-[0-9]+, (\\([0-9]+\\):\\([0-9]+\\)-\\([0-9]+\\):\\([0-9]+\\) | [0-9]+-[0-9]+)" 1 (2 . 4) (3 . 5) 1)
)
)
(set (make-local-variable 'compilation-first-column) 1)
(add-hook 'compilation-filter-hook
(lambda () (ansi-color-apply-on-region (point-min-marker) (point)))
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Launch/Stop
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; keymap
(defvar opa-mode-map nil "Keymap for opa-mode")
(setq opa-mode-map (make-sparse-keymap))
(define-key opa-mode-map "\C-c\C-c" 'compile)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; menu
(define-key opa-mode-map [menu-bar]
(make-sparse-keymap))
(let ((opa-menu-map (make-sparse-keymap "OPA")))
(define-key opa-mode-map [menu-bar opa]
(cons "OPA" opa-menu-map))
(define-key opa-menu-map [opa-kill]
'("Stop application" . opa-stop))
(define-key opa-menu-map [opa-start]
'("Launch application" . opa-start))
(define-key opa-menu-map [compile]
'("Compile this file" . compile))
(define-key opa-menu-map [separator]
'("--" ))
(define-key opa-menu-map [goto-home-page]
'("Open documentation" .
(lambda ()
(interactive)
(browse-url "http://www.mlstate.com/wiki/admin/opa_documentation"))))
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; below is currently unused, work-in-progress only
(defvar opa-syntax-error nil)
(defun opa-set-syntax-error-face-once ()
(if (null opa-syntax-error) ()
(put-text-property (car opa-syntax-error) (cdr opa-syntax-error) 'face 'opa-font-stop-face)
(setq opa-syntax-error nil)
))
(defun opa-indent-line (&optional arg)
"Fix the indentation of the current line according to OPA rules.
This function is normally bound to `indent-line-function' so
\\[indent-for-tab-command] will call it."
(interactive "P")
(let* ((ci (current-indentation))
(syntax-error nil)
(need (opa-compute-indentation)))
(if (or (/= ci need) syntax-error)
(save-excursion
(beginning-of-line)
(delete-horizontal-space)
(indent-to need)
(setq opa-syntax-error (if syntax-error (cons (- (point) need) (point)) nil))
))
))
(defun opa-backward-pattern ()
; TODO: handle comma for "x, y -> ..."
(backward-sexp))
(defun backward-if-non-meaningful ()
(while (looking-at "[ \t\n]") (backward-char))
(while (is-in-comment-zone) (backward-char))
(while (looking-at "[ \t\n]") (backward-char)))
(defun backward-until-outdent ()
(let ((indent (current-indentation)))
(while (progn (forward-line -1) (>= (current-indentation) indent)))
(move-to-column indent)))
(defun previous-meaningful-end-of-line ()
(beginning-of-line) (backward-char) (backward-if-non-meaningful))
(defun is-value ()
(or (looking-at "[a-zA-Z0-9_)}]\\|\\]")
(is-in-xhtml-zone)))
(defun count-values (beg end)
(let ((cnt 0))
(save-excursion
(goto-char end) (end-of-line) (backward-if-non-meaningful)
(if (< end (point)) (previous-meaningful-end-of-line))
(while (<= beg (point))
;(message (concat "count-values looking at " (int-to-string (point))))
(if (is-value) (inc cnt))
(previous-meaningful-end-of-line)
;(message (concat "count-values is now at " (int-to-string (point))))
))
;(message (concat "count-values gives " (int-to-string cnt) " between " (int-to-string (point)) " and " (int-to-string last)))
cnt))
(defconst opa-statement-re
"\\([;=(){}]\\|\\[\\|\\]\\|->\\|\\bmatch\\b\\)")
(defun opa-classify-statement ()
(cond
((looking-at ";") 'semi-colon)
((looking-at "=") 'def)
((looking-at "->") 'ano-func)
((looking-at "[)}]\\|\\]") 'close-paren)
((looking-at "[({]\\|\\[") 'open-paren)
((looking-at "match\\b") 'match)
((looking-at "end\\b") 'end)
((looking-at "[a-zA-Z0-9_]") 'value)
))
(defadvice opa-classify-statement (around opa-classify-statement-around)
(let ((kind (ad-do-it)))
;(message (concat "opa-classify-statement at pos " (int-to-string (point)) " gives " (pp-to-string kind)))
kind))
(defun opa-find-first-statement-forward (beg end)
;(message (concat "opa-find-first-statement-forward between " (int-to-string beg) " and " (int-to-string end)))
(save-excursion
(goto-char beg)
(let ((stop nil))
(while (and (null stop)
(re-search-forward opa-statement-re end t))
(goto-char (match-beginning 0))
(cond
((looking-at "[({]\\|\\[")
; using forward-sexp to handle (...), [...], {...} (we must not look into them)
(forward-sexp))
(t
(setq stop (opa-classify-statement)
))))
;(message (concat "opa-find-first-statement-forward found " (pp-to-string stop)))
stop)))
(defun opa-find-statement-backward ()
;(message (concat "we found an implicit ';' (was looking at " (int-to-string (point)) ")"))
(let ((last (point))
(deep 0)
(stop nil))
(while (and (null stop)
(re-search-backward opa-statement-re nil t))
(setq deep (+ deep (count-values (point) last)))
(setq last (point))
(cond
((looking-at "[)}]\\|\\]")
; using backward-sexp to handle (...), [...], {...} (we must not look into them)
(forward-char 1) (backward-sexp))
((looking-at "[({]\\|\\[")
; we found unclosed, we can't go further. If deep is not 0, it mean syntax error in the code
(setq stop 'open-paren) (forward-char 1))
((looking-at ";")
(inc deep))
(t
(dec deep)
(if (> deep 0) ()
(setq stop (opa-classify-statement))
))))
;(message (concat "opa-find-statement-backward stopped at " (int-to-string (point)) " (deep is " (int-to-string deep) ")"))
stop
))
;(toggle-debug-on-error)
(defun opa-compute-indentation-from-here (current-indentation-pos current-eol current-kind previous-kind)
(cond ((or (eq previous-kind 'operator) (eq previous-kind 'match))
(opa-backward-pattern) (+ (current-indentation) opa-indent-offset))
((eq previous-kind 'def)
(opa-backward-pattern) (current-column))
((eq previous-kind 'ano-func)
(opa-backward-pattern)
(let ((current-statement-kind (opa-find-first-statement-forward current-indentation-pos current-eol)))
(if (eq current-statement-kind 'def)
(progn
;(message (concat "point is " (int-to-string (point))))
(backward-until-outdent)
;(message (concat "point is " (int-to-string (point))))
(end-of-line)
(opa-compute-indentation-from-here current-indentation-pos current-eol current-kind (opa-find-statement-backward))
)
(current-column))))
((eq previous-kind 'open-paren)
(if (or (eq current-kind 'value) (eq current-kind 'match) (eq current-kind 'open-paren))
(setq syntax-error t))
(current-column))
))
(defun opa-compute-indentation ()
;; implements all the rules for indentation computation.
(save-excursion
(let* ((current-indentation-pos (progn (back-to-indentation) (point)))
(current-kind (opa-classify-statement))
(current-eol (progn (end-of-line) (point)))
(previous-kind (progn
(previous-meaningful-end-of-line)
(if (is-value)
; we found an implicit ";"
(progn (forward-char) (opa-find-statement-backward))
;(message (concat "we found an operator, simply indent (was looking at " (int-to-string (point)) ")"))
'operator))))
(opa-compute-indentation-from-here current-indentation-pos current-eol current-kind previous-kind)
)))
(defun opa-indent-region (start end &optional indent-offset)
"Reindent a region of OPA code.
The lines from the line containing the start of the current region up
to (but not including) the line containing the end of the region are
reindented. If the first line of the region has a non-whitespace
character in the first column, the first line is left alone and the
rest of the region is reindented with respect to it. Else the entire
region is reindented with respect to the (closest code or indenting
comment) statement immediately preceding the region.
This is useful when code blocks are moved or yanked, when enclosing
control structures are introduced or removed, or to reformat code
using a new value for the indentation offset.
If a numeric prefix argument is given, it will be used as the value of
the indentation offset. Else the value of `opa-indent-offset' will be
used.
"
(interactive "*r\nP") ; region; raw prefix arg
(save-excursion
(goto-char end) (beginning-of-line) (setq end (point-marker))
(goto-char start) (beginning-of-line)
(let ((opa-indent-offset (prefix-numeric-value
(or indent-offset opa-indent-offset)))
(indents '(-1)) ; stack of active indent levels
(target-column 0) ; column to which to indent
(base-shifted-by 0) ; amount last base line was shifted
(indent-base (if (looking-at "[ \t\n]")
(opa-compute-indentation)
0))
ci)
(while (< (point) end)
(setq ci (current-indentation))
;; figure out appropriate target column
(cond
((or (eq (following-char) ?#) ; comment in column 1
(looking-at "[ \t]*$")) ; entirely blank
(setq target-column 0))
(t ; new base line
(if (> ci (car indents)) ; going deeper; push it
(setq indents (cons ci indents))
;; else we should have seen this indent before
(setq indents (memq ci indents)) ; pop deeper indents
(if (null indents)
(error "Bad indentation in region, at line %d"
(save-restriction
(widen)
(1+ (count-lines 1 (point)))))))
(setq target-column (+ indent-base
(* opa-indent-offset
(- (length indents) 2))))
(setq base-shifted-by (- target-column ci))))
;; shift as needed
(if (/= ci target-column)
(progn
(delete-horizontal-space)
(indent-to target-column)))
(forward-line 1))))
(set-marker end nil))
(provide 'opa-mode)
;;; opa-mode.el ends here