/
__init__.py
1982 lines (1616 loc) · 86.3 KB
/
__init__.py
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
from __future__ import print_function
import sys
import os
import io
import getopt
import re
import string
import errno
import copy
from jsbeautifier.__version__ import __version__
#
# The MIT License (MIT)
# Copyright (c) 2007-2013 Einar Lielmanis and contributors.
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# Originally written by Einar Lielmanis et al.,
# Conversion to python by Einar Lielmanis, einar@jsbeautifier.org,
# Parsing improvement for brace-less and semicolon-less statements
# by Liam Newman <bitwiseman@gmail.com>
# Python is not my native language, feel free to push things around.
#
# Use either from command line (script displays its usage when run
# without any parameters),
#
#
# or, alternatively, use it as a module:
#
# import jsbeautifier
# res = jsbeautifier.beautify('your javascript string')
# res = jsbeautifier.beautify_file('some_file.js')
#
# you may specify some options:
#
# opts = jsbeautifier.default_options()
# opts.indent_size = 2
# res = jsbeautifier.beautify('some javascript', opts)
#
#
# Here are the available options: (read source)
class BeautifierOptions:
def __init__(self):
self.indent_size = 4
self.indent_char = ' '
self.indent_with_tabs = False
self.eol = 'auto'
self.preserve_newlines = True
self.max_preserve_newlines = 10
self.space_in_paren = False
self.space_in_empty_paren = False
self.e4x = False
self.jslint_happy = False
self.space_after_anon_function = False
self.brace_style = 'collapse'
self.keep_array_indentation = False
self.keep_function_indentation = False
self.eval_code = False
self.unescape_strings = False
self.wrap_line_length = 0
self.break_chained_methods = False
self.end_with_newline = False
self.comma_first = False
# For testing of beautify ignore:start directive
self.test_output_raw = False
def __repr__(self):
return \
"""indent_size = %d
indent_char = [%s]
preserve_newlines = %s
max_preserve_newlines = %d
space_in_paren = %s
jslint_happy = %s
space_after_anon_function = %s
indent_with_tabs = %s
brace_style = %s
keep_array_indentation = %s
eval_code = %s
wrap_line_length = %s
unescape_strings = %s
""" % ( self.indent_size,
self.indent_char,
self.preserve_newlines,
self.max_preserve_newlines,
self.space_in_paren,
self.jslint_happy,
self.space_after_anon_function,
self.indent_with_tabs,
self.brace_style,
self.keep_array_indentation,
self.eval_code,
self.wrap_line_length,
self.unescape_strings,
)
class BeautifierFlags:
def __init__(self, mode):
self.mode = mode
self.parent = None
self.last_text = ''
self.last_word = ''
self.declaration_statement = False
self.declaration_assignment = False
self.multiline_frame = False
self.inline_frame = False
self.if_block = False
self.else_block = False
self.do_block = False
self.do_while = False
self.in_case = False
self.in_case_statement = False
self.case_body = False
self.indentation_level = 0
self.line_indent_level = 0
self.start_line_index = 0
self.ternary_depth = 0
def apply_base(self, flags_base, added_newline):
next_indent_level = flags_base.indentation_level
if not added_newline and \
flags_base.line_indent_level > next_indent_level:
next_indent_level = flags_base.line_indent_level
self.parent = flags_base
self.last_text = flags_base.last_text
self.last_word = flags_base.last_word
self.indentation_level = next_indent_level
class Acorn:
def __init__(self):
# This is not pretty, but given how we did the version import
# it is the only way to do this without having setup.py fail on a missing six dependency.
self.six = __import__("six")
# This section of code was translated to python from acorn (javascript).
#
# Acorn was written by Marijn Haverbeke and released under an MIT
# license. The Unicode regexps (for identifiers and whitespace) were
# taken from [Esprima](http://esprima.org) by Ariya Hidayat.
#
# Git repositories for Acorn are available at
#
# http://marijnhaverbeke.nl/git/acorn
# https://github.com/marijnh/acorn.git
# ## Character categories
# Big ugly regular expressions that match characters in the
# whitespace, identifier, and identifier-start categories. These
# are only applied when a character is found to actually have a
# code point above 128.
self.nonASCIIwhitespace = re.compile(self.six.u("[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]"))
self.nonASCIIidentifierStartChars = self.six.u("\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc")
self.nonASCIIidentifierChars = self.six.u("\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f")
self.nonASCIIidentifierStart = re.compile("[" + self.nonASCIIidentifierStartChars + "]")
self.nonASCIIidentifier = re.compile("[" + self.nonASCIIidentifierStartChars + self.nonASCIIidentifierChars + "]")
# Whether a single character denotes a newline.
self.newline = re.compile(self.six.u("[\n\r\u2028\u2029]"))
# Matches a whole line break (where CRLF is considered a single
# line break). Used to count lines.
# in javascript, these two differ
# in python they are the same, different methods are called on them
self.lineBreak = re.compile(self.six.u("\r\n|[\n\r\u2028\u2029]"))
self.allLineBreaks = self.lineBreak
# Test whether a given character code starts an identifier.
def isIdentifierStart(self, code):
if code < 65:
return code in [36, 64] # permit $ (36) and @ (64). @ is used in ES7 decorators.
if code < 91:
return True # 65 through 91 are uppercase letters
if code < 97:
return code == 95 # permit _ (95)
if code < 123:
return True # 97 through 123 are lowercase letters
return code >= 0xaa and self.nonASCIIidentifierStart.match(self.six.unichr(code)) != None
# Test whether a given character is part of an identifier.
def isIdentifierChar(self, code):
if code < 48:
return code == 36
if code < 58:
return True
if code < 65:
return False
if code < 91:
return True
if code < 97:
return code == 95
if code < 123:
return True
return code >= 0xaa and self.nonASCIIidentifier.match(self.six.unichr(code)) != None
class Token:
def __init__(self, type, text, newlines = 0, whitespace_before = '', mode = None, parent = None):
self.type = type
self.text = text
self.comments_before = []
self.newlines = newlines
self.wanted_newline = newlines > 0
self.whitespace_before = whitespace_before
self.parent = None
self.opened = None
self.directives = None
def default_options():
return BeautifierOptions()
def beautify(string, opts = default_options() ):
b = Beautifier()
return b.beautify(string, opts)
def beautify_file(file_name, opts = default_options() ):
input_string = ''
if file_name == '-': # stdin
try:
if sys.stdin.isatty():
raise
stream = sys.stdin
input_string = ''.join(stream.readlines())
except Exception as ex:
print("Must pipe input or define at least one file.", file=sys.stderr)
usage(sys.stderr)
raise
else:
stream = io.open(file_name, 'rt', newline='')
input_string = ''.join(stream.readlines())
return beautify(input_string, opts)
def usage(stream=sys.stdout):
print("jsbeautifier.py@" + __version__ + """
Javascript beautifier (http://jsbeautifier.org/)
Usage: jsbeautifier.py [options] <infile>
<infile> can be "-", which means stdin.
<outfile> defaults to stdout
Input options:
-i, --stdin Read input from stdin
Output options:
-s, --indent-size=NUMBER Indentation size. (default 4).
-c, --indent-char=CHAR Character to indent with. (default space).
-e, --eol=STRING Character(s) to use as line terminators.
(default first newline in file, otherwise "\\n")
-t, --indent-with-tabs Indent with tabs, overrides -s and -c
-d, --disable-preserve-newlines Do not preserve existing line breaks.
-P, --space-in-paren Add padding spaces within paren, ie. f( a, b )
-E, --space-in-empty-paren Add a single space inside empty paren, ie. f( )
-j, --jslint-happy More jslint-compatible output
-a, --space_after_anon_function Add a space before an anonymous function's parens, ie. function ()
-b, --brace-style=collapse Brace style (collapse-preserve-inline, collapse, expand, end-expand)
-k, --keep-array-indentation Keep array indentation.
-r, --replace Write output in-place, replacing input
-o, --outfile=FILE Specify a file to output to (default stdout)
-f, --keep-function-indentation Do not re-indent function bodies defined in var lines.
-x, --unescape-strings Decode printable chars encoded in \\xNN notation.
-X, --e4x Pass E4X xml literals through untouched
-w, --wrap-line-length Attempt to wrap line when it exceeds this length.
NOTE: Line continues until next wrap point is found.
-n, --end_with_newline End output with newline
Rarely needed options:
--eval-code evaluate code if a JS interpreter is
installed. May be useful with some obfuscated
script but poses a potential security issue.
-l, --indent-level=NUMBER Initial indentation level. (default 0).
-h, --help, --usage Prints this help statement.
-v, --version Show the version
""", file=stream)
if stream == sys.stderr:
return 1
else:
return 0
class MODE:
BlockStatement, Statement, ObjectLiteral, ArrayLiteral, \
ForInitializer, Conditional, Expression = range(7)
class Beautifier:
def __init__(self, opts = default_options() ):
self.opts = copy.copy(opts)
self.acorn = Acorn()
self.blank_state()
def blank_state(self, js_source_text = None):
# internal flags
self.flags = None
self.previous_flags = None
self.flag_store = []
self.tokens = []
self.token_pos = 0
# force opts.space_after_anon_function to true if opts.jslint_happy
if self.opts.jslint_happy:
self.opts.space_after_anon_function = True
if self.opts.indent_with_tabs:
self.opts.indent_char = "\t"
self.opts.indent_size = 1
if self.opts.eol == 'auto':
self.opts.eol = '\n'
if self.acorn.lineBreak.search(js_source_text or ''):
self.opts.eol = self.acorn.lineBreak.search(js_source_text).group()
self.opts.eol = self.opts.eol.replace('\\r', '\r').replace('\\n', '\n')
self.indent_string = self.opts.indent_char * self.opts.indent_size
self.baseIndentString = ''
self.last_type = 'TK_START_BLOCK' # last token type
self.last_last_text = '' # pre-last token text
preindent_index = 0;
if not js_source_text == None and len(js_source_text) > 0:
while preindent_index < len(js_source_text) and \
js_source_text[preindent_index] in [' ', '\t'] :
self.baseIndentString += js_source_text[preindent_index]
preindent_index += 1
js_source_text = js_source_text[preindent_index:]
self.output = Output(self.indent_string, self.baseIndentString)
# If testing the ignore directive, start with output disable set to true
self.output.raw = self.opts.test_output_raw;
self.set_mode(MODE.BlockStatement)
return js_source_text
def beautify(self, s, opts = None ):
if opts != None:
self.opts = copy.copy(opts)
if self.opts.brace_style not in ['expand', 'collapse', 'collapse-preserve-inline', 'end-expand', 'none']:
raise(Exception('opts.brace_style must be "expand", "collapse", "collapse-preserve-inline", "end-expand", or "none".'))
s = self.blank_state(s)
input = self.unpack(s, self.opts.eval_code)
self.handlers = {
'TK_START_EXPR': self.handle_start_expr,
'TK_END_EXPR': self.handle_end_expr,
'TK_START_BLOCK': self.handle_start_block,
'TK_END_BLOCK': self.handle_end_block,
'TK_WORD': self.handle_word,
'TK_RESERVED': self.handle_word,
'TK_SEMICOLON': self.handle_semicolon,
'TK_STRING': self.handle_string,
'TK_EQUALS': self.handle_equals,
'TK_OPERATOR': self.handle_operator,
'TK_COMMA': self.handle_comma,
'TK_BLOCK_COMMENT': self.handle_block_comment,
'TK_COMMENT': self.handle_comment,
'TK_DOT': self.handle_dot,
'TK_UNKNOWN': self.handle_unknown,
'TK_EOF': self.handle_eof
}
self.tokens = Tokenizer(input, self.opts, self.indent_string).tokenize()
self.token_pos = 0
while not self.get_token() == None:
local_token = self.get_token()
for comment_token in local_token.comments_before:
# The cleanest handling of inline comments is to treat them as though they aren't there.
# Just continue formatting and the behavior should be logical.
# Also ignore unknown tokens. Again, this should result in better behavior.
self.handle_token(comment_token)
self.handle_token(local_token)
self.last_last_text = self.flags.last_text
self.last_type = local_token.type
self.flags.last_text = local_token.text
self.token_pos += 1
sweet_code = self.output.get_code()
if self.opts.end_with_newline:
sweet_code += '\n'
if not self.opts.eol == '\n':
sweet_code = sweet_code.replace('\n', self.opts.eol)
return sweet_code
def handle_token(self, local_token):
newlines = local_token.newlines
keep_whitespace = self.opts.keep_array_indentation and self.is_array(self.flags.mode)
if keep_whitespace:
for i in range(newlines):
self.print_newline(i > 0)
else: # not keep_whitespace
if self.opts.max_preserve_newlines != 0 and newlines > self.opts.max_preserve_newlines:
newlines = self.opts.max_preserve_newlines
if self.opts.preserve_newlines and newlines > 1:
self.print_newline()
for i in range(1, newlines):
self.print_newline(True)
self.handlers[local_token.type](local_token)
def unpack(self, source, evalcode=False):
import jsbeautifier.unpackers as unpackers
try:
return unpackers.run(source, evalcode)
except unpackers.UnpackingError as error:
print('error:', error)
return ''
def is_special_word(self, s):
return s in ['case', 'return', 'do', 'if', 'throw', 'else']
def is_array(self, mode):
return mode == MODE.ArrayLiteral
def is_expression(self, mode):
return mode in [MODE.Expression, MODE.ForInitializer, MODE.Conditional]
_newline_restricted_tokens = ['break','contiue','return', 'throw']
def allow_wrap_or_preserved_newline(self, current_token, force_linewrap = False):
# never wrap the first token of a line.
if self.output.just_added_newline():
return
if (self.opts.preserve_newlines and current_token.wanted_newline) or force_linewrap:
self.print_newline(preserve_statement_flags = True)
elif self.opts.wrap_line_length > 0:
if self.last_type == 'TK_RESERVED' and self.flags.last_text in self._newline_restricted_tokens:
# These tokens should never have a newline inserted between
# them and the following expression.
return
proposed_line_length = self.output.current_line.get_character_count() + len(current_token.text)
if self.output.space_before_token:
proposed_line_length += 1
if proposed_line_length >= self.opts.wrap_line_length:
self.print_newline(preserve_statement_flags = True)
def print_newline(self, force_newline = False, preserve_statement_flags = False):
if not preserve_statement_flags:
if self.flags.last_text != ';' and self.flags.last_text != ',' and self.flags.last_text != '=' and self.last_type != 'TK_OPERATOR':
while self.flags.mode == MODE.Statement and not self.flags.if_block and not self.flags.do_block:
self.restore_mode()
if self.output.add_new_line(force_newline):
self.flags.multiline_frame = True
def print_token_line_indentation(self, current_token):
if self.output.just_added_newline():
line = self.output.current_line
if self.opts.keep_array_indentation and self.is_array(self.flags.mode) and current_token.wanted_newline:
line.push(current_token.whitespace_before)
self.output.space_before_token = False
elif self.output.set_indent(self.flags.indentation_level):
self.flags.line_indent_level = self.flags.indentation_level
def print_token(self, current_token, s=None):
if self.output.raw:
self.output.add_raw_token(current_token)
return
if self.opts.comma_first and self.last_type == 'TK_COMMA' and self.output.just_added_newline():
if self.output.previous_line.last() == ',':
# if the comma was already at the start of the line,
# pull back onto that line and reprint the indentation
popped = self.output.previous_line.pop()
if self.output.previous_line.is_empty():
self.output.previous_line.push(popped)
self.output.trim(True)
self.output.current_line.pop()
self.output.trim()
# add the comma in front of the next token
self.print_token_line_indentation(current_token)
self.output.add_token(',')
self.output.space_before_token = True
if s == None:
s = current_token.text
self.print_token_line_indentation(current_token)
self.output.add_token(s);
def indent(self):
self.flags.indentation_level += 1
def deindent(self):
allow_deindent = self.flags.indentation_level > 0 and ((self.flags.parent == None) or self.flags.indentation_level > self.flags.parent.indentation_level)
if allow_deindent:
self.flags.indentation_level -= 1
def set_mode(self, mode):
if self.flags:
self.flag_store.append(self.flags)
self.previous_flags = self.flags
else:
self.previous_flags = BeautifierFlags(mode)
self.flags = BeautifierFlags(mode)
self.flags.apply_base(self.previous_flags, self.output.just_added_newline())
self.flags.start_line_index = self.output.get_line_number();
def restore_mode(self):
if len(self.flag_store) > 0:
self.previous_flags = self.flags
self.flags = self.flag_store.pop()
if self.previous_flags.mode == MODE.Statement:
self.output.remove_redundant_indentation(self.previous_flags)
def start_of_object_property(self):
return self.flags.parent.mode == MODE.ObjectLiteral and self.flags.mode == MODE.Statement and \
((self.flags.last_text == ':' and self.flags.ternary_depth == 0) or (self.last_type == 'TK_RESERVED' and self.flags.last_text in ['get', 'set']))
def start_of_statement(self, current_token):
if (
(self.last_type == 'TK_RESERVED' and self.flags.last_text in ['var', 'let', 'const'] and current_token.type == 'TK_WORD') \
or (self.last_type == 'TK_RESERVED' and self.flags.last_text== 'do') \
or (self.last_type == 'TK_RESERVED' and self.flags.last_text in ['return', 'throw'] and not current_token.wanted_newline) \
or (self.last_type == 'TK_RESERVED' and self.flags.last_text == 'else' and not (current_token.type == 'TK_RESERVED' and current_token.text == 'if' )) \
or (self.last_type == 'TK_END_EXPR' and (self.previous_flags.mode == MODE.ForInitializer or self.previous_flags.mode == MODE.Conditional)) \
or (self.last_type == 'TK_WORD' and self.flags.mode == MODE.BlockStatement \
and not self.flags.in_case
and not (current_token.text == '--' or current_token.text == '++')
and self.last_last_text != 'function'
and current_token.type != 'TK_WORD' and current_token.type != 'TK_RESERVED') \
or (self.flags.mode == MODE.ObjectLiteral and \
((self.flags.last_text == ':' and self.flags.ternary_depth == 0) or (self.last_type == 'TK_RESERVED' and self.flags.last_text in ['get', 'set'])))
):
self.set_mode(MODE.Statement)
self.indent()
if self.last_type == 'TK_RESERVED' and self.flags.last_text in ['var', 'let', 'const'] and current_token.type == 'TK_WORD':
self.flags.declaration_statement = True
# Issue #276:
# If starting a new statement with [if, for, while, do], push to a new line.
# if (a) if (b) if(c) d(); else e(); else f();
if not self.start_of_object_property():
self.allow_wrap_or_preserved_newline(current_token, current_token.type == 'TK_RESERVED' and current_token.text in ['do', 'for', 'if', 'while'])
return True
else:
return False
def get_token(self, offset = 0):
index = self.token_pos + offset
if index < 0 or index >= len(self.tokens):
return None
else:
return self.tokens[index]
def handle_start_expr(self, current_token):
if self.start_of_statement(current_token):
# The conditional starts the statement if appropriate.
pass
next_mode = MODE.Expression
if current_token.text == '[':
if self.last_type == 'TK_WORD' or self.flags.last_text == ')':
if self.last_type == 'TK_RESERVED' and self.flags.last_text in Tokenizer.line_starters:
self.output.space_before_token = True
self.set_mode(next_mode)
self.print_token(current_token)
self.indent()
if self.opts.space_in_paren:
self.output.space_before_token = True
return
next_mode = MODE.ArrayLiteral
if self.is_array(self.flags.mode):
if self.flags.last_text == '[' or (
self.flags.last_text == ',' and (self.last_last_text == ']' or self.last_last_text == '}')):
# ], [ goes to a new line
# }, [ goes to a new line
if not self.opts.keep_array_indentation:
self.print_newline()
else:
if self.last_type == 'TK_RESERVED' and self.flags.last_text == 'for':
next_mode = MODE.ForInitializer
elif self.last_type == 'TK_RESERVED' and self.flags.last_text in ['if', 'while']:
next_mode = MODE.Conditional
else:
next_mode = MODE.Expression
if self.flags.last_text == ';' or self.last_type == 'TK_START_BLOCK':
self.print_newline()
elif self.last_type in ['TK_END_EXPR', 'TK_START_EXPR', 'TK_END_BLOCK'] or self.flags.last_text == '.':
# do nothing on (( and )( and ][ and ]( and .(
# TODO: Consider whether forcing this is required. Review failing tests when removed.
self.allow_wrap_or_preserved_newline(current_token, current_token.wanted_newline)
elif not (self.last_type == 'TK_RESERVED' and current_token.text == '(') and self.last_type not in ['TK_WORD', 'TK_OPERATOR']:
self.output.space_before_token = True
elif (self.last_type == 'TK_RESERVED' and (self.flags.last_word == 'function' or self.flags.last_word == 'typeof')) or \
(self.flags.last_text == '*' and self.last_last_text =='function'):
# function() vs function (), typeof() vs typeof ()
if self.opts.space_after_anon_function:
self.output.space_before_token = True
elif self.last_type == 'TK_RESERVED' and (self.flags.last_text in Tokenizer.line_starters or self.flags.last_text == 'catch'):
# TODO: option space_before_conditional
self.output.space_before_token = True
elif current_token.text == '(' and self.last_type == 'TK_RESERVED' and self.flags.last_word == 'await':
self.output.space_before_token = True
# Support of this kind of newline preservation:
# a = (b &&
# (c || d));
if self.last_type in ['TK_EQUALS', 'TK_OPERATOR']:
if not self.start_of_object_property():
self.allow_wrap_or_preserved_newline(current_token)
# Support preserving wrapped arrow function expressions
# a.b('c',
# () => d.e
# )
if current_token.text == '(' and self.last_type not in ['TK_WORD', 'TK_RESERVED']:
self.allow_wrap_or_preserved_newline(current_token)
self.set_mode(next_mode)
self.print_token(current_token)
if self.opts.space_in_paren:
self.output.space_before_token = True
# In all cases, if we newline while inside an expression it should be indented.
self.indent()
def handle_end_expr(self, current_token):
# statements inside expressions are not valid syntax, but...
# statements must all be closed when their container closes
while self.flags.mode == MODE.Statement:
self.restore_mode()
if self.flags.multiline_frame:
self.allow_wrap_or_preserved_newline(current_token, current_token.text == ']' and self.is_array(self.flags.mode) and not self.opts.keep_array_indentation)
if self.opts.space_in_paren:
if self.last_type == 'TK_START_EXPR' and not self.opts.space_in_empty_paren:
# empty parens are always "()" and "[]", not "( )" or "[ ]"
self.output.space_before_token = False
self.output.trim()
else:
self.output.space_before_token = True
if current_token.text == ']' and self.opts.keep_array_indentation:
self.print_token(current_token)
self.restore_mode()
else:
self.restore_mode()
self.print_token(current_token)
self.output.remove_redundant_indentation(self.previous_flags)
# do {} while () // no statement required after
if self.flags.do_while and self.previous_flags.mode == MODE.Conditional:
self.previous_flags.mode = MODE.Expression
self.flags.do_block = False
self.flags.do_while = False
def handle_start_block(self, current_token):
# Check if this is a BlockStatement that should be treated as a ObjectLiteral
next_token = self.get_token(1)
second_token = self.get_token(2)
if second_token != None and \
((second_token.text in [':', ','] and next_token.type in ['TK_STRING', 'TK_WORD', 'TK_RESERVED']) \
or (next_token.text in ['get', 'set'] and second_token.type in ['TK_WORD', 'TK_RESERVED'])):
# We don't support TypeScript,but we didn't break it for a very long time.
# We'll try to keep not breaking it.
if not self.last_last_text in ['class','interface']:
self.set_mode(MODE.ObjectLiteral)
else:
self.set_mode(MODE.BlockStatement)
elif self.last_type == 'TK_OPERATOR' and self.flags.last_text == '=>':
# arrow function: (param1, paramN) => { statements }
self.set_mode(MODE.BlockStatement)
elif self.last_type in ['TK_EQUALS', 'TK_START_EXPR', 'TK_COMMA', 'TK_OPERATOR'] or \
(self.last_type == 'TK_RESERVED' and self.flags.last_text in ['return', 'throw', 'import']):
# Detecting shorthand function syntax is difficult by scanning forward,
# so check the surrounding context.
# If the block is being returned, imported, passed as arg,
# assigned with = or assigned in a nested object, treat as an ObjectLiteral.
self.set_mode(MODE.ObjectLiteral)
else:
self.set_mode(MODE.BlockStatement)
empty_braces = (not next_token == None) and len(next_token.comments_before) == 0 and next_token.text == '}'
empty_anonymous_function = empty_braces and self.flags.last_word == 'function' and \
self.last_type == 'TK_END_EXPR'
if self.opts.brace_style == 'expand' or \
(self.opts.brace_style == 'none' and current_token.wanted_newline):
if self.last_type != 'TK_OPERATOR' and \
(empty_anonymous_function or
self.last_type == 'TK_EQUALS' or
(self.last_type == 'TK_RESERVED' and self.is_special_word(self.flags.last_text) and self.flags.last_text != 'else')):
self.output.space_before_token = True
else:
self.print_newline(preserve_statement_flags = True)
else: # collapse
if self.opts.brace_style == 'collapse-preserve-inline':
# search forward for newline wanted inside this block
index = 0
check_token = None
self.flags.inline_frame = True
do_loop = True
while (do_loop):
index += 1
check_token = self.get_token(index)
if check_token.wanted_newline:
self.flags.inline_frame = False
do_loop = (check_token.type != 'TK_EOF' and
not (check_token.type == 'TK_END_BLOCK' and check_token.opened == current_token))
if self.is_array(self.previous_flags.mode) and (self.last_type == 'TK_START_EXPR' or self.last_type == 'TK_COMMA'):
# if we're preserving inline,
# allow newline between comma and next brace.
if self.flags.inline_frame:
self.allow_wrap_or_preserved_newline(current_token)
self.flags.inline_frame = True
self.previous_flags.multiline_frame = self.previous_flags.multiline_frame or self.flags.multiline_frame
self.flags.multiline_frame = False
else:
self.output.space_before_token = self.last_type == 'TK_COMMA'
elif self.last_type not in ['TK_OPERATOR', 'TK_START_EXPR']:
if self.last_type == 'TK_START_BLOCK':
self.print_newline()
else:
self.output.space_before_token = True
self.print_token(current_token)
self.indent()
def handle_end_block(self, current_token):
# statements must all be closed when their container closes
while self.flags.mode == MODE.Statement:
self.restore_mode()
empty_braces = self.last_type == 'TK_START_BLOCK'
if self.opts.brace_style == 'expand':
if not empty_braces:
self.print_newline()
else:
# skip {}
if not empty_braces:
if self.flags.inline_frame:
self.output.space_before_token = True
elif self.is_array(self.flags.mode) and self.opts.keep_array_indentation:
self.opts.keep_array_indentation = False
self.print_newline()
self.opts.keep_array_indentation = True
else:
self.print_newline()
self.restore_mode()
self.print_token(current_token)
def handle_word(self, current_token):
if current_token.type == 'TK_RESERVED' and self.flags.mode != MODE.ObjectLiteral and \
current_token.text in ['set', 'get']:
current_token.type = 'TK_WORD'
if current_token.type == 'TK_RESERVED' and self.flags.mode == MODE.ObjectLiteral:
next_token = self.get_token(1)
if next_token.text == ':':
current_token.type = 'TK_WORD'
if self.start_of_statement(current_token):
# The conditional starts the statement if appropriate.
pass
elif current_token.wanted_newline and \
not self.is_expression(self.flags.mode) and \
(self.last_type != 'TK_OPERATOR' or (self.flags.last_text == '--' or self.flags.last_text == '++')) and \
self.last_type != 'TK_EQUALS' and \
(self.opts.preserve_newlines or not (self.last_type == 'TK_RESERVED' and self.flags.last_text in ['var', 'let', 'const', 'set', 'get'])):
self.print_newline()
if self.flags.do_block and not self.flags.do_while:
if current_token.type == 'TK_RESERVED' and current_token.text == 'while':
# do {} ## while ()
self.output.space_before_token = True
self.print_token(current_token)
self.output.space_before_token = True
self.flags.do_while = True
return
else:
# do {} should always have while as the next word.
# if we don't see the expected while, recover
self.print_newline()
self.flags.do_block = False
# if may be followed by else, or not
# Bare/inline ifs are tricky
# Need to unwind the modes correctly: if (a) if (b) c(); else d(); else e();
if self.flags.if_block:
if (not self.flags.else_block) and (current_token.type == 'TK_RESERVED' and current_token.text == 'else'):
self.flags.else_block = True
else:
while self.flags.mode == MODE.Statement:
self.restore_mode()
self.flags.if_block = False
if current_token.type == 'TK_RESERVED' and (current_token.text == 'case' or (current_token.text == 'default' and self.flags.in_case_statement)):
self.print_newline()
if self.flags.case_body or self.opts.jslint_happy:
self.flags.case_body = False
self.deindent()
self.print_token(current_token)
self.flags.in_case = True
self.flags.in_case_statement = True
return
if current_token.type == 'TK_RESERVED' and current_token.text == 'function':
if self.flags.last_text in ['}', ';'] or (self.output.just_added_newline() and not self.flags.last_text in ['[', '{', ':', '=', ',']):
# make sure there is a nice clean space of at least one blank line
# before a new function definition, except in arrays
if not self.output.just_added_blankline() and len(current_token.comments_before) == 0:
self.print_newline()
self.print_newline(True)
if self.last_type == 'TK_RESERVED' or self.last_type == 'TK_WORD':
if self.last_type == 'TK_RESERVED' and self.flags.last_text in ['get', 'set', 'new', 'return', 'export', 'async']:
self.output.space_before_token = True
elif self.last_type == 'TK_RESERVED' and self.flags.last_text == 'default' and self.last_last_text == 'export':
self.output.space_before_token = True
else:
self.print_newline()
elif self.last_type == 'TK_OPERATOR' or self.flags.last_text == '=':
# foo = function
self.output.space_before_token = True
elif not self.flags.multiline_frame and (self.is_expression(self.flags.mode) or self.is_array(self.flags.mode)):
# (function
pass
else:
self.print_newline()
if self.last_type in ['TK_COMMA', 'TK_START_EXPR', 'TK_EQUALS', 'TK_OPERATOR']:
if not self.start_of_object_property():
self.allow_wrap_or_preserved_newline(current_token)
if current_token.type == 'TK_RESERVED' and current_token.text in ['function', 'get', 'set']:
self.print_token(current_token)
self.flags.last_word = current_token.text
return
prefix = 'NONE'
if self.last_type == 'TK_END_BLOCK':
if not (current_token.type == 'TK_RESERVED' and current_token.text in ['else', 'catch', 'finally', 'from']):
prefix = 'NEWLINE'
else:
if self.opts.brace_style in ['expand', 'end-expand'] or \
(self.opts.brace_style == 'none' and current_token.wanted_newline):
prefix = 'NEWLINE'
else:
prefix = 'SPACE'
self.output.space_before_token = True
elif self.last_type == 'TK_SEMICOLON' and self.flags.mode == MODE.BlockStatement:
# TODO: Should this be for STATEMENT as well?
prefix = 'NEWLINE'
elif self.last_type == 'TK_SEMICOLON' and self.is_expression(self.flags.mode):
prefix = 'SPACE'
elif self.last_type == 'TK_STRING':
prefix = 'NEWLINE'
elif self.last_type == 'TK_RESERVED' or self.last_type == 'TK_WORD' or \
(self.flags.last_text == '*' and self.last_last_text == 'function'):
prefix = 'SPACE'
elif self.last_type == 'TK_START_BLOCK':
if self.flags.inline_frame:
prefix = 'SPACE'
else:
prefix = 'NEWLINE'
elif self.last_type == 'TK_END_EXPR':
self.output.space_before_token = True
prefix = 'NEWLINE'
if current_token.type == 'TK_RESERVED' and current_token.text in Tokenizer.line_starters and self.flags.last_text != ')':
if self.flags.last_text == 'else ' or self.flags.last_text == 'export':
prefix = 'SPACE'
else:
prefix = 'NEWLINE'
if current_token.type == 'TK_RESERVED' and current_token.text in ['else', 'catch', 'finally']:
if (not (self.last_type == 'TK_END_BLOCK' and self.previous_flags.mode == MODE.BlockStatement)) \
or self.opts.brace_style == 'expand' \
or self.opts.brace_style == 'end-expand' \
or (self.opts.brace_style == 'none' and current_token.wanted_newline):
self.print_newline()
else:
self.output.trim(True)
# If we trimmed and there's something other than a close block before us
# put a newline back in. Handles '} // comment' scenario.
if self.output.current_line.last() != '}':
self.print_newline()
self.output.space_before_token = True
elif prefix == 'NEWLINE':
if self.last_type == 'TK_RESERVED' and self.is_special_word(self.flags.last_text):
# no newline between return nnn
self.output.space_before_token = True
elif self.last_type != 'TK_END_EXPR':
if (self.last_type != 'TK_START_EXPR' or not (current_token.type == 'TK_RESERVED' and current_token.text in ['var', 'let', 'const'])) and self.flags.last_text != ':':
# no need to force newline on VAR -
# for (var x = 0...
if current_token.type == 'TK_RESERVED' and current_token.text == 'if' and self.flags.last_text == 'else':
self.output.space_before_token = True
else:
self.print_newline()
elif current_token.type == 'TK_RESERVED' and current_token.text in Tokenizer.line_starters and self.flags.last_text != ')':
self.print_newline()
elif self.flags.multiline_frame and self.is_array(self.flags.mode) and self.flags.last_text == ',' and self.last_last_text == '}':
self.print_newline() # }, in lists get a newline
elif prefix == 'SPACE':
self.output.space_before_token = True