/
lint.py
1817 lines (1642 loc) · 69.1 KB
/
lint.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
# -*- coding: utf-8 -*-
# Copyright (c) 2006-2015 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
# Copyright (c) 2008 Fabrice Douchant <Fabrice.Douchant@logilab.fr>
# Copyright (c) 2009 Vincent
# Copyright (c) 2009 Mads Kiilerich <mads@kiilerich.com>
# Copyright (c) 2011-2014 Google, Inc.
# Copyright (c) 2012 David Pursehouse <david.pursehouse@sonymobile.com>
# Copyright (c) 2012 Kevin Jing Qiu <kevin.jing.qiu@gmail.com>
# Copyright (c) 2012 FELD Boris <lothiraldan@gmail.com>
# Copyright (c) 2012 JT Olds <jtolds@xnet5.com>
# Copyright (c) 2014-2018 Claudiu Popa <pcmanticore@gmail.com>
# Copyright (c) 2014-2015 Michal Nowikowski <godfryd@gmail.com>
# Copyright (c) 2014 Brett Cannon <brett@python.org>
# Copyright (c) 2014 Alexandru Coman <fcoman@bitdefender.com>
# Copyright (c) 2014 Daniel Harding <dharding@living180.net>
# Copyright (c) 2014 Arun Persaud <arun@nubati.net>
# Copyright (c) 2014 Dan Goldsmith <djgoldsmith@googlemail.com>
# Copyright (c) 2015-2016 Florian Bruhin <me@the-compiler.org>
# Copyright (c) 2015 Aru Sahni <arusahni@gmail.com>
# Copyright (c) 2015 Steven Myint <hg@stevenmyint.com>
# Copyright (c) 2015 Simu Toni <simutoni@gmail.com>
# Copyright (c) 2015 Mihai Balint <balint.mihai@gmail.com>
# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
# Copyright (c) 2016-2017 Łukasz Rogalski <rogalski.91@gmail.com>
# Copyright (c) 2016 Glenn Matthews <glenn@e-dad.net>
# Copyright (c) 2016 Alan Evangelista <alanoe@linux.vnet.ibm.com>
# Copyright (c) 2017-2018 Ville Skyttä <ville.skytta@iki.fi>
# Copyright (c) 2017-2018 hippo91 <guillaume.peillex@gmail.com>
# Copyright (c) 2017 Daniel Miller <millerdev@gmail.com>
# Copyright (c) 2017 Roman Ivanov <me@roivanov.com>
# Copyright (c) 2017 Ned Batchelder <ned@nedbatchelder.com>
# Copyright (c) 2018 Randall Leeds <randall@bleeds.info>
# Copyright (c) 2018 Mike Frysinger <vapier@gmail.com>
# Copyright (c) 2018 ssolanki <sushobhitsolanki@gmail.com>
# Copyright (c) 2018 Ville Skyttä <ville.skytta@upcloud.com>
# Copyright (c) 2018 Sushobhit <31987769+sushobhit27@users.noreply.github.com>
# Copyright (c) 2018 Anthony Sottile <asottile@umich.edu>
# Copyright (c) 2018 Jason Owen <jason.a.owen@gmail.com>
# Copyright (c) 2018 Gary Tyler McLeod <mail@garytyler.com>
# Copyright (c) 2018 Yuval Langer <yuvallanger@mail.tau.ac.il>
# Copyright (c) 2018 Nick Drozd <nicholasdrozd@gmail.com>
# Copyright (c) 2018 kapsh <kapsh@kap.sh>
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
# pylint: disable=broad-except
""" pylint [options] modules_or_packages
Check that module(s) satisfy a coding standard (and more !).
pylint --help
Display this help message and exit.
pylint --help-msg <msg-id>[,<msg-id>]
Display help messages about given message identifiers and exit.
"""
import collections
import contextlib
import operator
import os
import sys
import tokenize
import traceback
import warnings
from io import TextIOWrapper
import astroid
from astroid import modutils
from astroid.__pkginfo__ import version as astroid_version
from astroid.builder import AstroidBuilder
from pylint import __pkginfo__, checkers, config, exceptions, interfaces, reporters
from pylint.__pkginfo__ import version
from pylint.constants import MAIN_CHECKER_NAME, MSG_TYPES, OPTION_RGX
from pylint.message import Message, MessageDefinitionStore, MessagesHandlerMixIn
from pylint.reporters.ureports import nodes as report_nodes
from pylint.utils import ASTWalker, FileState, utils
try:
import multiprocessing
except ImportError:
multiprocessing = None # type: ignore
MANAGER = astroid.MANAGER
def _ast_from_string(data, filepath, modname):
cached = MANAGER.astroid_cache.get(modname)
if cached and cached.file == filepath:
return cached
return AstroidBuilder(MANAGER).string_build(data, modname, filepath)
def _read_stdin():
# https://mail.python.org/pipermail/python-list/2012-November/634424.html
sys.stdin = TextIOWrapper(sys.stdin.detach(), encoding="utf-8")
return sys.stdin.read()
def _get_new_args(message):
location = (
message.abspath,
message.path,
message.module,
message.obj,
message.line,
message.column,
)
return (message.msg_id, message.symbol, location, message.msg, message.confidence)
def _get_python_path(filepath):
dirname = os.path.realpath(os.path.expanduser(filepath))
if not os.path.isdir(dirname):
dirname = os.path.dirname(dirname)
while True:
if not os.path.exists(os.path.join(dirname, "__init__.py")):
return dirname
old_dirname = dirname
dirname = os.path.dirname(dirname)
if old_dirname == dirname:
return os.getcwd()
return None
def _merge_stats(stats):
merged = {}
by_msg = collections.Counter()
for stat in stats:
message_stats = stat.pop("by_msg", {})
by_msg.update(message_stats)
for key, item in stat.items():
if key not in merged:
merged[key] = item
else:
if isinstance(item, dict):
merged[key].update(item)
else:
merged[key] = merged[key] + item
merged["by_msg"] = by_msg
return merged
# Python Linter class #########################################################
MSGS = {
"F0001": (
"%s",
"fatal",
"Used when an error occurred preventing the analysis of a \
module (unable to find it for instance).",
),
"F0002": (
"%s: %s",
"astroid-error",
"Used when an unexpected error occurred while building the "
"Astroid representation. This is usually accompanied by a "
"traceback. Please report such errors !",
),
"F0010": (
"error while code parsing: %s",
"parse-error",
"Used when an exception occurred while building the Astroid "
"representation which could be handled by astroid.",
),
"I0001": (
"Unable to run raw checkers on built-in module %s",
"raw-checker-failed",
"Used to inform that a built-in module has not been checked "
"using the raw checkers.",
),
"I0010": (
"Unable to consider inline option %r",
"bad-inline-option",
"Used when an inline option is either badly formatted or can't "
"be used inside modules.",
),
"I0011": (
"Locally disabling %s (%s)",
"locally-disabled",
"Used when an inline option disables a message or a messages category.",
),
"I0013": (
"Ignoring entire file",
"file-ignored",
"Used to inform that the file will not be checked",
),
"I0020": (
"Suppressed %s (from line %d)",
"suppressed-message",
"A message was triggered on a line, but suppressed explicitly "
"by a disable= comment in the file. This message is not "
"generated for messages that are ignored due to configuration "
"settings.",
),
"I0021": (
"Useless suppression of %s",
"useless-suppression",
"Reported when a message is explicitly disabled for a line or "
"a block of code, but never triggered.",
),
"I0022": (
'Pragma "%s" is deprecated, use "%s" instead',
"deprecated-pragma",
"Some inline pylint options have been renamed or reworked, "
"only the most recent form should be used. "
"NOTE:skip-all is only available with pylint >= 0.26",
{"old_names": [("I0014", "deprecated-disable-all")]},
),
"E0001": ("%s", "syntax-error", "Used when a syntax error is raised for a module."),
"E0011": (
"Unrecognized file option %r",
"unrecognized-inline-option",
"Used when an unknown inline option is encountered.",
),
"E0012": (
"Bad option value %r",
"bad-option-value",
"Used when a bad value for an inline option is encountered.",
),
}
def _cpu_count() -> int:
"""Use sched_affinity if available for virtualized or containerized environments."""
sched_getaffinity = getattr(os, "sched_getaffinity", None)
# pylint: disable=not-callable,using-constant-test
if sched_getaffinity:
return len(sched_getaffinity(0))
if multiprocessing:
return multiprocessing.cpu_count()
return 1
if multiprocessing is not None:
class ChildLinter(multiprocessing.Process):
def run(self):
# pylint: disable=no-member, unbalanced-tuple-unpacking
tasks_queue, results_queue, self._config = self._args
self._config["jobs"] = 1 # Child does not parallelize any further.
self._python3_porting_mode = self._config.pop("python3_porting_mode", None)
self._plugins = self._config.pop("plugins", None)
# Run linter for received files/modules.
for file_or_module in iter(tasks_queue.get, "STOP"):
try:
result = self._run_linter(file_or_module[0])
results_queue.put(result)
except Exception as ex:
print(
"internal error with sending report for module %s"
% file_or_module,
file=sys.stderr,
)
print(ex, file=sys.stderr)
results_queue.put({})
def _run_linter(self, file_or_module):
linter = PyLinter()
# Register standard checkers.
linter.load_default_plugins()
# Load command line plugins.
if self._plugins:
linter.load_plugin_modules(self._plugins)
linter.load_configuration_from_config(self._config)
# Load plugin specific configuration
linter.load_plugin_configuration()
linter.set_reporter(reporters.CollectingReporter())
# Enable the Python 3 checker mode. This option is
# passed down from the parent linter up to here, since
# the Python 3 porting flag belongs to the Run class,
# instead of the Linter class.
if self._python3_porting_mode:
linter.python3_porting_mode()
# Run the checks.
linter.check(file_or_module)
msgs = [_get_new_args(m) for m in linter.reporter.messages]
return (
file_or_module,
linter.file_state.base_name,
linter.current_name,
msgs,
linter.stats,
linter.msg_status,
)
# pylint: disable=too-many-instance-attributes,too-many-public-methods
class PyLinter(
config.OptionsManagerMixIn,
MessagesHandlerMixIn,
reporters.ReportsHandlerMixIn,
checkers.BaseTokenChecker,
):
"""lint Python modules using external checkers.
This is the main checker controlling the other ones and the reports
generation. It is itself both a raw checker and an astroid checker in order
to:
* handle message activation / deactivation at the module level
* handle some basic but necessary stats'data (number of classes, methods...)
IDE plugin developers: you may have to call
`astroid.builder.MANAGER.astroid_cache.clear()` across runs if you want
to ensure the latest code version is actually checked.
"""
__implements__ = (interfaces.ITokenChecker,)
name = MAIN_CHECKER_NAME
priority = 0
level = 0
msgs = MSGS
@staticmethod
def make_options():
return (
(
"ignore",
{
"type": "csv",
"metavar": "<file>[,<file>...]",
"dest": "black_list",
"default": ("CVS",),
"help": "Add files or directories to the blacklist. "
"They should be base names, not paths.",
},
),
(
"ignore-patterns",
{
"type": "regexp_csv",
"metavar": "<pattern>[,<pattern>...]",
"dest": "black_list_re",
"default": (),
"help": "Add files or directories matching the regex patterns to the"
" blacklist. The regex matches against base names, not paths.",
},
),
(
"persistent",
{
"default": True,
"type": "yn",
"metavar": "<y_or_n>",
"level": 1,
"help": "Pickle collected data for later comparisons.",
},
),
(
"load-plugins",
{
"type": "csv",
"metavar": "<modules>",
"default": (),
"level": 1,
"help": "List of plugins (as comma separated values of "
"python module names) to load, usually to register "
"additional checkers.",
},
),
(
"output-format",
{
"default": "text",
"type": "string",
"metavar": "<format>",
"short": "f",
"group": "Reports",
"help": "Set the output format. Available formats are text,"
" parseable, colorized, json and msvs (visual studio)."
" You can also give a reporter class, e.g. mypackage.mymodule."
"MyReporterClass.",
},
),
(
"reports",
{
"default": False,
"type": "yn",
"metavar": "<y_or_n>",
"short": "r",
"group": "Reports",
"help": "Tells whether to display a full report or only the "
"messages.",
},
),
(
"evaluation",
{
"type": "string",
"metavar": "<python_expression>",
"group": "Reports",
"level": 1,
"default": "10.0 - ((float(5 * error + warning + refactor + "
"convention) / statement) * 10)",
"help": "Python expression which should return a score less "
"than or equal to 10. You have access to the variables "
"'error', 'warning', 'refactor', and 'convention' which "
"contain the number of messages in each category, as well as "
"'statement' which is the total number of statements "
"analyzed. This score is used by the global "
"evaluation report (RP0004).",
},
),
(
"score",
{
"default": True,
"type": "yn",
"metavar": "<y_or_n>",
"short": "s",
"group": "Reports",
"help": "Activate the evaluation score.",
},
),
(
"confidence",
{
"type": "multiple_choice",
"metavar": "<levels>",
"default": "",
"choices": [c.name for c in interfaces.CONFIDENCE_LEVELS],
"group": "Messages control",
"help": "Only show warnings with the listed confidence levels."
" Leave empty to show all. Valid levels: %s."
% (", ".join(c.name for c in interfaces.CONFIDENCE_LEVELS),),
},
),
(
"enable",
{
"type": "csv",
"metavar": "<msg ids>",
"short": "e",
"group": "Messages control",
"help": "Enable the message, report, category or checker with the "
"given id(s). You can either give multiple identifier "
"separated by comma (,) or put this option multiple time "
"(only on the command line, not in the configuration file "
"where it should appear only once). "
'See also the "--disable" option for examples.',
},
),
(
"disable",
{
"type": "csv",
"metavar": "<msg ids>",
"short": "d",
"group": "Messages control",
"help": "Disable the message, report, category or checker "
"with the given id(s). You can either give multiple identifiers "
"separated by comma (,) or put this option multiple times "
"(only on the command line, not in the configuration file "
"where it should appear only once). "
'You can also use "--disable=all" to disable everything first '
"and then reenable specific checks. For example, if you want "
"to run only the similarities checker, you can use "
'"--disable=all --enable=similarities". '
"If you want to run only the classes checker, but have no "
"Warning level messages displayed, use "
'"--disable=all --enable=classes --disable=W".',
},
),
(
"msg-template",
{
"type": "string",
"metavar": "<template>",
"group": "Reports",
"help": (
"Template used to display messages. "
"This is a python new-style format string "
"used to format the message information. "
"See doc for all details."
),
},
),
(
"jobs",
{
"type": "int",
"metavar": "<n-processes>",
"short": "j",
"default": 1,
"help": "Use multiple processes to speed up Pylint. Specifying 0 will "
"auto-detect the number of processors available to use.",
},
),
(
"unsafe-load-any-extension",
{
"type": "yn",
"metavar": "<yn>",
"default": False,
"hide": True,
"help": (
"Allow loading of arbitrary C extensions. Extensions"
" are imported into the active Python interpreter and"
" may run arbitrary code."
),
},
),
(
"limit-inference-results",
{
"type": "int",
"metavar": "<number-of-results>",
"default": 100,
"help": (
"Control the amount of potential inferred values when inferring "
"a single object. This can help the performance when dealing with "
"large functions or complex, nested conditions. "
),
},
),
(
"extension-pkg-whitelist",
{
"type": "csv",
"metavar": "<pkg[,pkg]>",
"default": [],
"help": (
"A comma-separated list of package or module names"
" from where C extensions may be loaded. Extensions are"
" loading into the active Python interpreter and may run"
" arbitrary code."
),
},
),
(
"suggestion-mode",
{
"type": "yn",
"metavar": "<yn>",
"default": True,
"help": (
"When enabled, pylint would attempt to guess common "
"misconfiguration and emit user-friendly hints instead "
"of false-positive error messages."
),
},
),
(
"exit-zero",
{
"action": "store_true",
"help": (
"Always return a 0 (non-error) status code, even if "
"lint errors are found. This is primarily useful in "
"continuous integration scripts."
),
},
),
(
"from-stdin",
{
"action": "store_true",
"help": (
"Interpret the stdin as a python script, whose filename "
"needs to be passed as the module_or_package argument."
),
},
),
)
option_groups = (
("Messages control", "Options controlling analysis messages"),
("Reports", "Options related to output formatting and reporting"),
)
def __init__(self, options=(), reporter=None, option_groups=(), pylintrc=None):
# some stuff has to be done before ancestors initialization...
#
# messages store / checkers / reporter / astroid manager
self.msgs_store = MessageDefinitionStore()
self.reporter = None
self._reporter_name = None
self._reporters = {}
self._checkers = collections.defaultdict(list)
self._pragma_lineno = {}
self._ignore_file = False
# visit variables
self.file_state = FileState()
self.current_name = None
self.current_file = None
self.stats = None
# init options
self._external_opts = options
self.options = options + PyLinter.make_options()
self.option_groups = option_groups + PyLinter.option_groups
self._options_methods = {"enable": self.enable, "disable": self.disable}
self._bw_options_methods = {
"disable-msg": self.disable,
"enable-msg": self.enable,
}
full_version = "pylint %s\nastroid %s\nPython %s" % (
version,
astroid_version,
sys.version,
)
MessagesHandlerMixIn.__init__(self)
reporters.ReportsHandlerMixIn.__init__(self)
super(PyLinter, self).__init__(
usage=__doc__, version=full_version, config_file=pylintrc or config.PYLINTRC
)
checkers.BaseTokenChecker.__init__(self)
# provided reports
self.reports = (
("RP0001", "Messages by category", report_total_messages_stats),
(
"RP0002",
"% errors / warnings by module",
report_messages_by_module_stats,
),
("RP0003", "Messages", report_messages_stats),
)
self.register_checker(self)
self._dynamic_plugins = set()
self._python3_porting_mode = False
self._error_mode = False
self.load_provider_defaults()
if reporter:
self.set_reporter(reporter)
def load_default_plugins(self):
checkers.initialize(self)
reporters.initialize(self)
# Make sure to load the default reporter, because
# the option has been set before the plugins had been loaded.
if not self.reporter:
self._load_reporter()
def load_plugin_modules(self, modnames):
"""take a list of module names which are pylint plugins and load
and register them
"""
for modname in modnames:
if modname in self._dynamic_plugins:
continue
self._dynamic_plugins.add(modname)
module = modutils.load_module_from_name(modname)
module.register(self)
def load_plugin_configuration(self):
"""Call the configuration hook for plugins
This walks through the list of plugins, grabs the "load_configuration"
hook, if exposed, and calls it to allow plugins to configure specific
settings.
"""
for modname in self._dynamic_plugins:
module = modutils.load_module_from_name(modname)
if hasattr(module, "load_configuration"):
module.load_configuration(self)
def _load_reporter(self):
name = self._reporter_name.lower()
if name in self._reporters:
self.set_reporter(self._reporters[name]())
else:
try:
reporter_class = self._load_reporter_class()
except (ImportError, AttributeError):
raise exceptions.InvalidReporterError(name)
else:
self.set_reporter(reporter_class())
def _load_reporter_class(self):
qname = self._reporter_name
module = modutils.load_module_from_name(modutils.get_module_part(qname))
class_name = qname.split(".")[-1]
reporter_class = getattr(module, class_name)
return reporter_class
def set_reporter(self, reporter):
"""set the reporter used to display messages and reports"""
self.reporter = reporter
reporter.linter = self
def set_option(self, optname, value, action=None, optdict=None):
"""overridden from config.OptionsProviderMixin to handle some
special options
"""
if optname in self._options_methods or optname in self._bw_options_methods:
if value:
try:
meth = self._options_methods[optname]
except KeyError:
meth = self._bw_options_methods[optname]
warnings.warn(
"%s is deprecated, replace it by %s"
% (optname, optname.split("-")[0]),
DeprecationWarning,
)
value = utils._check_csv(value)
if isinstance(value, (list, tuple)):
for _id in value:
meth(_id, ignore_unknown=True)
else:
meth(value)
return # no need to call set_option, disable/enable methods do it
elif optname == "output-format":
self._reporter_name = value
# If the reporters are already available, load
# the reporter class.
if self._reporters:
self._load_reporter()
try:
checkers.BaseTokenChecker.set_option(self, optname, value, action, optdict)
except config.UnsupportedAction:
print("option %s can't be read from config file" % optname, file=sys.stderr)
def register_reporter(self, reporter_class):
self._reporters[reporter_class.name] = reporter_class
def report_order(self):
reports = sorted(self._reports, key=lambda x: getattr(x, "name", ""))
try:
# Remove the current reporter and add it
# at the end of the list.
reports.pop(reports.index(self))
except ValueError:
pass
else:
reports.append(self)
return reports
# checkers manipulation methods ############################################
def register_checker(self, checker):
"""register a new checker
checker is an object implementing IRawChecker or / and IAstroidChecker
"""
assert checker.priority <= 0, "checker priority can't be >= 0"
self._checkers[checker.name].append(checker)
for r_id, r_title, r_cb in checker.reports:
self.register_report(r_id, r_title, r_cb, checker)
self.register_options_provider(checker)
if hasattr(checker, "msgs"):
self.msgs_store.register_messages_from_checker(checker)
checker.load_defaults()
# Register the checker, but disable all of its messages.
if not getattr(checker, "enabled", True):
self.disable(checker.name)
def disable_noerror_messages(self):
for msgcat, msgids in self.msgs_store._msgs_by_category.items():
# enable only messages with 'error' severity and above ('fatal')
if msgcat in ["E", "F"]:
for msgid in msgids:
self.enable(msgid)
else:
for msgid in msgids:
self.disable(msgid)
def disable_reporters(self):
"""disable all reporters"""
for _reporters in self._reports.values():
for report_id, _, _ in _reporters:
self.disable_report(report_id)
def error_mode(self):
"""error mode: enable only errors; no reports, no persistent"""
self._error_mode = True
self.disable_noerror_messages()
self.disable("miscellaneous")
if self._python3_porting_mode:
self.disable("all")
for msg_id in self._checker_messages("python3"):
if msg_id.startswith("E"):
self.enable(msg_id)
config_parser = self.cfgfile_parser
if config_parser.has_option("MESSAGES CONTROL", "disable"):
value = config_parser.get("MESSAGES CONTROL", "disable")
self.global_set_option("disable", value)
else:
self.disable("python3")
self.set_option("reports", False)
self.set_option("persistent", False)
self.set_option("score", False)
def python3_porting_mode(self):
"""Disable all other checkers and enable Python 3 warnings."""
self.disable("all")
self.enable("python3")
if self._error_mode:
# The error mode was activated, using the -E flag.
# So we'll need to enable only the errors from the
# Python 3 porting checker.
for msg_id in self._checker_messages("python3"):
if msg_id.startswith("E"):
self.enable(msg_id)
else:
self.disable(msg_id)
config_parser = self.cfgfile_parser
if config_parser.has_option("MESSAGES CONTROL", "disable"):
value = config_parser.get("MESSAGES CONTROL", "disable")
self.global_set_option("disable", value)
self._python3_porting_mode = True
def list_messages_enabled(self):
enabled = [
" %s (%s)" % (message.symbol, message.msgid)
for message in self.msgs_store.messages
if self.is_message_enabled(message.msgid)
]
disabled = [
" %s (%s)" % (message.symbol, message.msgid)
for message in self.msgs_store.messages
if not self.is_message_enabled(message.msgid)
]
print("Enabled messages:")
for msg in sorted(enabled):
print(msg)
print("\nDisabled messages:")
for msg in sorted(disabled):
print(msg)
print("")
# block level option handling #############################################
#
# see func_block_disable_msg.py test case for expected behaviour
def process_tokens(self, tokens):
"""process tokens from the current module to search for module/block
level options
"""
control_pragmas = {"disable", "enable"}
prev_line = None
saw_newline = True
seen_newline = True
for (tok_type, content, start, _, _) in tokens:
if prev_line and prev_line != start[0]:
saw_newline = seen_newline
seen_newline = False
prev_line = start[0]
if tok_type in (tokenize.NL, tokenize.NEWLINE):
seen_newline = True
if tok_type != tokenize.COMMENT:
continue
match = OPTION_RGX.search(content)
if match is None:
continue
first_group = match.group(1)
if (
first_group.strip() == "disable-all"
or first_group.strip() == "skip-file"
):
if first_group.strip() == "disable-all":
self.add_message(
"deprecated-pragma",
line=start[0],
args=("disable-all", "skip-file"),
)
self.add_message("file-ignored", line=start[0])
self._ignore_file = True
return
try:
opt, value = first_group.split("=", 1)
except ValueError:
self.add_message(
"bad-inline-option", args=first_group.strip(), line=start[0]
)
continue
opt = opt.strip()
if opt in self._options_methods or opt in self._bw_options_methods:
try:
meth = self._options_methods[opt]
except KeyError:
meth = self._bw_options_methods[opt]
# found a "(dis|en)able-msg" pragma deprecated suppression
self.add_message(
"deprecated-pragma",
line=start[0],
args=(opt, opt.replace("-msg", "")),
)
for msgid in utils._splitstrip(value):
# Add the line where a control pragma was encountered.
if opt in control_pragmas:
self._pragma_lineno[msgid] = start[0]
try:
if (opt, msgid) == ("disable", "all"):
self.add_message(
"deprecated-pragma",
line=start[0],
args=("disable=all", "skip-file"),
)
self.add_message("file-ignored", line=start[0])
self._ignore_file = True
return
# If we did not see a newline between the previous line and now,
# we saw a backslash so treat the two lines as one.
if not saw_newline:
meth(msgid, "module", start[0] - 1)
meth(msgid, "module", start[0])
except exceptions.UnknownMessageError:
self.add_message("bad-option-value", args=msgid, line=start[0])
else:
self.add_message("unrecognized-inline-option", args=opt, line=start[0])
# code checking methods ###################################################
def get_checkers(self):
"""return all available checkers as a list"""
return [self] + [
c
for _checkers in self._checkers.values()
for c in _checkers
if c is not self
]
def get_checker_names(self):
"""Get all the checker names that this linter knows about."""
current_checkers = self.get_checkers()
return sorted(
{
checker.name
for checker in current_checkers
if checker.name != MAIN_CHECKER_NAME
}
)
def prepare_checkers(self):
"""return checkers needed for activated messages and reports"""
if not self.config.reports:
self.disable_reporters()
# get needed checkers
needed_checkers = [self]
for checker in self.get_checkers()[1:]:
messages = {msg for msg in checker.msgs if self.is_message_enabled(msg)}
if messages or any(self.report_is_enabled(r[0]) for r in checker.reports):
needed_checkers.append(checker)
# Sort checkers by priority
needed_checkers = sorted(
needed_checkers, key=operator.attrgetter("priority"), reverse=True
)
return needed_checkers
# pylint: disable=unused-argument
@staticmethod
def should_analyze_file(modname, path, is_argument=False):
"""Returns whether or not a module should be checked.
This implementation returns True for all python source file, indicating
that all files should be linted.
Subclasses may override this method to indicate that modules satisfying
certain conditions should not be linted.
:param str modname: The name of the module to be checked.
:param str path: The full path to the source code of the module.
:param bool is_argument: Whetter the file is an argument to pylint or not.
Files which respect this property are always
checked, since the user requested it explicitly.
:returns: True if the module should be checked.
:rtype: bool
"""
if is_argument:
return True
return path.endswith(".py")
# pylint: enable=unused-argument
def check(self, files_or_modules):
"""main checking entry: check a list of files or modules from their
name.
"""
# initialize msgs_state now that all messages have been registered into
# the store
for msg in self.msgs_store.messages:
if not msg.may_be_emitted():
self._msgs_state[msg.msgid] = False
if not isinstance(files_or_modules, (list, tuple)):