def _check_unnecessary_raw_string(self, token: tokenize.TokenInfo) -> None:
modifiers, string_def = split_prefixes(token.string)
if 'r' in modifiers.lower() and '\\' not in string_def:
self.add_violation(
consistency.RawStringNotNeededViolation(token,
text=string_def), )
def _check_implicit_raw_string(self, token: tokenize.TokenInfo) -> None:
modifiers, string_def = split_prefixes(token.string)
if 'r' in modifiers.lower():
return
if self._implicit_raw_strings.search(_replace_braces(string_def)):
self.add_violation(
consistency.ImplicitRawStringViolation(
token,
text=token.string,
), )
def _check_string_modifiers(self, token: tokenize.TokenInfo) -> None:
modifiers, _ = split_prefixes(token.string)
if 'u' in modifiers.lower():
self.add_violation(
consistency.UnicodeStringViolation(token, text=token.string), )
for mod in modifiers:
if mod in self._bad_string_modifiers:
self.add_violation(
consistency.UppercaseStringModifierViolation(
token,
text=mod,
), )
def _check_wrong_unicode_escape(self, token: tokenize.TokenInfo) -> None:
# See: http://docs.python.org/reference/lexical_analysis.html
modifiers, string_body = split_prefixes(token.string)
index = 0
while True:
index = string_body.find('\\', index)
if index == -1:
break
next_char = string_body[index + 1]
if 'b' in modifiers.lower() and next_char in self._unicode_escapes:
self.add_violation(
WrongUnicodeEscapeViolation(token, text=token.string), )
# Whether it was a valid escape or not, backslash followed by
# another character can always be consumed whole: the second
# character can never be the start of a new backslash escape.
index += 2
def _check_correct_multiline(self, token: tokenize.TokenInfo) -> None:
_, string_def = split_prefixes(token.string)
if has_triple_string_quotes(string_def):
if '\n' not in string_def and token not in self._docstrings:
self.add_violation(
consistency.WrongMultilineStringViolation(token), )