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
|
# Copyright (c) 2006, 2009-2013 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
# Copyright (c) 2012-2014 Google, Inc.
# Copyright (c) 2014-2020 Claudiu Popa <pcmanticore@gmail.com>
# Copyright (c) 2014 Brett Cannon <brett@python.org>
# Copyright (c) 2014 Alexandru Coman <fcoman@bitdefender.com>
# Copyright (c) 2014 Arun Persaud <arun@nubati.net>
# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
# Copyright (c) 2016 Łukasz Rogalski <rogalski.91@gmail.com>
# Copyright (c) 2016 glegoux <gilles.legoux@gmail.com>
# Copyright (c) 2017-2020 hippo91 <guillaume.peillex@gmail.com>
# Copyright (c) 2017 Mikhail Fesenko <proggga@gmail.com>
# Copyright (c) 2018 Rogalski, Lukasz <lukasz.rogalski@intel.com>
# Copyright (c) 2018 Lucas Cimon <lucas.cimon@gmail.com>
# Copyright (c) 2018 Ville Skyttä <ville.skytta@iki.fi>
# Copyright (c) 2019-2021 Pierre Sassoulas <pierre.sassoulas@gmail.com>
# Copyright (c) 2020 wtracy <afishionado@gmail.com>
# Copyright (c) 2020 Anthony Sottile <asottile@umich.edu>
# Copyright (c) 2020 Benny <benny.mueller91@gmail.com>
# Copyright (c) 2021 Konstantina Saketou <56515303+ksaketou@users.noreply.github.com>
# 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
"""Check source code is ascii only or has an encoding declaration (PEP 263)"""
import re
import tokenize
from pylint.checkers import BaseChecker
from pylint.interfaces import IRawChecker, ITokenChecker
from pylint.message import MessagesHandlerMixIn
from pylint.utils.pragma_parser import OPTION_PO, PragmaParserError, parse_pragma
class ByIdManagedMessagesChecker(BaseChecker):
"""Checks for messages that are enabled or disabled by id instead of symbol."""
__implements__ = IRawChecker
name = "miscellaneous"
msgs = {
"I0023": (
"%s",
"use-symbolic-message-instead",
"Used when a message is enabled or disabled by id.",
)
}
options = ()
def process_module(self, module):
"""Inspect the source file to find messages activated or deactivated by id."""
managed_msgs = MessagesHandlerMixIn.get_by_id_managed_msgs()
for (mod_name, msgid, symbol, lineno, is_disabled) in managed_msgs:
if mod_name == module.name:
verb = "disable" if is_disabled else "enable"
txt = f"'{msgid}' is cryptic: use '# pylint: {verb}={symbol}' instead"
self.add_message("use-symbolic-message-instead", line=lineno, args=txt)
MessagesHandlerMixIn.clear_by_id_managed_msgs()
class EncodingChecker(BaseChecker):
"""checks for:
* warning notes in the code like FIXME, XXX
* encoding issues.
"""
__implements__ = (IRawChecker, ITokenChecker)
# configuration section name
name = "miscellaneous"
msgs = {
"W0511": (
"%s",
"fixme",
"Used when a warning note as FIXME or XXX is detected.",
)
}
options = (
(
"notes",
{
"type": "csv",
"metavar": "<comma separated values>",
"default": ("FIXME", "XXX", "TODO"),
"help": (
"List of note tags to take in consideration, "
"separated by a comma."
),
},
),
(
"notes-rgx",
{
"type": "string",
"metavar": "<regexp>",
"help": "Regular expression of note tags to take in consideration.",
},
),
)
def open(self):
super().open()
notes = "|".join(map(re.escape, self.config.notes))
if self.config.notes_rgx:
regex_string = fr"#\s*({notes}|{self.config.notes_rgx})\b"
else:
regex_string = r"#\s*(%s)\b" % (notes)
self._fixme_pattern = re.compile(regex_string, re.I)
def _check_encoding(self, lineno, line, file_encoding):
try:
return line.decode(file_encoding)
except UnicodeDecodeError:
pass
except LookupError:
if line.startswith("#") and "coding" in line and file_encoding in line:
msg = f"Cannot decode using encoding '{file_encoding}', bad encoding"
self.add_message("syntax-error", line=lineno, args=msg)
return None
def process_module(self, module):
"""inspect the source file to find encoding problem"""
if module.file_encoding:
encoding = module.file_encoding
else:
encoding = "ascii"
with module.stream() as stream:
for lineno, line in enumerate(stream):
self._check_encoding(lineno + 1, line, encoding)
def process_tokens(self, tokens):
"""inspect the source to find fixme problems"""
if not self.config.notes:
return
comments = (
token_info for token_info in tokens if token_info.type == tokenize.COMMENT
)
for comment in comments:
comment_text = comment.string[1:].lstrip() # trim '#' and whitespaces
# handle pylint disable clauses
disable_option_match = OPTION_PO.search(comment_text)
if disable_option_match:
try:
values = []
try:
for pragma_repr in (
p_rep
for p_rep in parse_pragma(disable_option_match.group(2))
if p_rep.action == "disable"
):
values.extend(pragma_repr.messages)
except PragmaParserError:
# Printing useful information dealing with this error is done in the lint package
pass
if set(values) & set(self.config.notes):
continue
except ValueError:
self.add_message(
"bad-inline-option",
args=disable_option_match.group(1).strip(),
line=comment.start[0],
)
continue
# emit warnings if necessary
match = self._fixme_pattern.search("#" + comment_text.lower())
if match:
self.add_message(
"fixme",
col_offset=comment.start[1] + 1,
args=comment_text,
line=comment.start[0],
)
def register(linter):
"""required method to auto register this checker"""
linter.register_checker(EncodingChecker(linter))
linter.register_checker(ByIdManagedMessagesChecker(linter))
|
