forked from pylint-dev/pylint
-
Notifications
You must be signed in to change notification settings - Fork 0
/
base_checker.py
188 lines (163 loc) · 7.45 KB
/
base_checker.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
# Copyright (c) 2006-2014 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
# Copyright (c) 2013-2014 Google, Inc.
# Copyright (c) 2013 buck@yelp.com <buck@yelp.com>
# Copyright (c) 2014-2020 Claudiu Popa <pcmanticore@gmail.com>
# Copyright (c) 2014 Brett Cannon <brett@python.org>
# Copyright (c) 2014 Arun Persaud <arun@nubati.net>
# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
# Copyright (c) 2016 Moises Lopez <moylop260@vauxoo.com>
# Copyright (c) 2017-2018 Bryce Guinta <bryce.paul.guinta@gmail.com>
# Copyright (c) 2018-2021 Pierre Sassoulas <pierre.sassoulas@gmail.com>
# Copyright (c) 2018 ssolanki <sushobhitsolanki@gmail.com>
# Copyright (c) 2019 Bruno P. Kinoshita <kinow@users.noreply.github.com>
# Copyright (c) 2020 hippo91 <guillaume.peillex@gmail.com>
# Copyright (c) 2021 Marc Mueller <30130371+cdce8p@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/main/LICENSE
import functools
from inspect import cleandoc
from typing import Any
from pylint.config import OptionsProviderMixIn
from pylint.constants import _MSG_ORDER, WarningScope
from pylint.exceptions import InvalidMessageError
from pylint.interfaces import UNDEFINED, IRawChecker, ITokenChecker, implements
from pylint.message.message_definition import MessageDefinition
from pylint.utils import get_rst_section, get_rst_title
@functools.total_ordering
class BaseChecker(OptionsProviderMixIn):
# checker name (you may reuse an existing one)
name: str = ""
# options level (0 will be displaying in --help, 1 in --long-help)
level = 1
# ordered list of options to control the checker behaviour
options: Any = ()
# messages issued by this checker
msgs: Any = {}
# reports issued by this checker
reports: Any = ()
# mark this checker as enabled or not.
enabled: bool = True
def __init__(self, linter=None):
"""checker instances should have the linter as argument
:param ILinter linter: is an object implementing ILinter."""
if self.name is not None:
self.name = self.name.lower()
OptionsProviderMixIn.__init__(self)
self.linter = linter
def __gt__(self, other):
"""Permit to sort a list of Checker by name."""
return f"{self.name}{self.msgs}".__gt__(f"{other.name}{other.msgs}")
def __repr__(self):
status = "Checker" if self.enabled else "Disabled checker"
msgs = "', '".join(self.msgs.keys())
return f"{status} '{self.name}' (responsible for '{msgs}')"
def __str__(self):
"""This might be incomplete because multiple class inheriting BaseChecker
can have the same name. Cf MessageHandlerMixIn.get_full_documentation()"""
return self.get_full_documentation(
msgs=self.msgs, options=self.options_and_values(), reports=self.reports
)
def get_full_documentation(self, msgs, options, reports, doc=None, module=None):
result = ""
checker_title = f"{self.name.replace('_', ' ').title()} checker"
if module:
# Provide anchor to link against
result += f".. _{module}:\n\n"
result += f"{get_rst_title(checker_title, '~')}\n"
if module:
result += f"This checker is provided by ``{module}``.\n"
result += f"Verbatim name of the checker is ``{self.name}``.\n\n"
if doc:
# Provide anchor to link against
result += get_rst_title(f"{checker_title} Documentation", "^")
result += f"{cleandoc(doc)}\n\n"
# options might be an empty generator and not be False when casted to boolean
options = list(options)
if options:
result += get_rst_title(f"{checker_title} Options", "^")
result += f"{get_rst_section(None, options)}\n"
if msgs:
result += get_rst_title(f"{checker_title} Messages", "^")
for msgid, msg in sorted(
msgs.items(), key=lambda kv: (_MSG_ORDER.index(kv[0][0]), kv[1])
):
msg = self.create_message_definition_from_tuple(msgid, msg)
result += f"{msg.format_help(checkerref=False)}\n"
result += "\n"
if reports:
result += get_rst_title(f"{checker_title} Reports", "^")
for report in reports:
result += (
":%s: %s\n" % report[:2] # pylint: disable=consider-using-f-string
)
result += "\n"
result += "\n"
return result
def add_message(
self, msgid, line=None, node=None, args=None, confidence=None, col_offset=None
):
if not confidence:
confidence = UNDEFINED
self.linter.add_message(msgid, line, node, args, confidence, col_offset)
def check_consistency(self):
"""Check the consistency of msgid.
msg ids for a checker should be a string of len 4, where the two first
characters are the checker id and the two last the msg id in this
checker.
:raises InvalidMessageError: If the checker id in the messages are not
always the same."""
checker_id = None
existing_ids = []
for message in self.messages:
if checker_id is not None and checker_id != message.msgid[1:3]:
error_msg = "Inconsistent checker part in message id "
error_msg += f"'{message.msgid}' (expected 'x{checker_id}xx' "
error_msg += f"because we already had {existing_ids})."
raise InvalidMessageError(error_msg)
checker_id = message.msgid[1:3]
existing_ids.append(message.msgid)
def create_message_definition_from_tuple(self, msgid, msg_tuple):
if implements(self, (IRawChecker, ITokenChecker)):
default_scope = WarningScope.LINE
else:
default_scope = WarningScope.NODE
options = {}
if len(msg_tuple) > 3:
(msg, symbol, descr, options) = msg_tuple
elif len(msg_tuple) > 2:
(msg, symbol, descr) = msg_tuple
else:
error_msg = """Messages should have a msgid and a symbol. Something like this :
"W1234": (
"message",
"message-symbol",
"Message description with detail.",
...
),
"""
raise InvalidMessageError(error_msg)
options.setdefault("scope", default_scope)
return MessageDefinition(self, msgid, msg, descr, symbol, **options)
@property
def messages(self) -> list:
return [
self.create_message_definition_from_tuple(msgid, msg_tuple)
for msgid, msg_tuple in sorted(self.msgs.items())
]
# dummy methods implementing the IChecker interface
def get_message_definition(self, msgid):
for message_definition in self.messages:
if message_definition.msgid == msgid:
return message_definition
error_msg = f"MessageDefinition for '{msgid}' does not exists. "
error_msg += f"Choose from {[m.msgid for m in self.messages]}."
raise InvalidMessageError(error_msg)
def open(self):
"""called before visiting project (i.e set of modules)"""
def close(self):
"""called after visiting project (i.e set of modules)"""
class BaseTokenChecker(BaseChecker):
"""Base class for checkers that want to have access to the token stream."""
def process_tokens(self, tokens):
"""Should be overridden by subclasses."""
raise NotImplementedError()