Trivia.py

fromNodeimporterror
fromkindsimportlowercase_first_word# noqa: I201


classTrivia(object):
def__init__(self, name, comment, serialization_code, characters=[],
swift_characters=[], is_new_line=False, is_comment=False):
self.name=name
self.comment=comment
self.serialization_code=serialization_code
self.characters=tuple(characters)
self.lower_name=lowercase_first_word(name)
self.is_new_line=is_new_line
self.is_comment=is_comment

# Swift sometimes doesn't support escaped characters like \f or \v;
# we should allow specifying alternatives explicitly.
ifswift_characters:
self.swift_characters=tuple(swift_characters)
else:
self.swift_characters=characters
assertlen(self.swift_characters) ==len(self.characters)

defcharacters_len(self):
returnlen(self.characters)

defis_collection(self):
returnself.characters_len() >0


TRIVIAS= [
Trivia('Space', 'A space \'\' character.', characters=[' '],
serialization_code=0),
Trivia('Tab', 'A tab \'\\t\' character.', characters=['\\t'],
serialization_code=1),
Trivia('VerticalTab', 'A vertical tab \'\\v\' character.',
characters=['\\v'], swift_characters=['\\u{2B7F}'],
serialization_code=2),
Trivia('Formfeed', 'A form-feed \'f\' character.', characters=['\\f'],
swift_characters=['\\u{240C}'], serialization_code=3),
Trivia('Newline', 'A newline \'\\n\' character.', characters=['\\n'],
is_new_line=True, serialization_code=4),
Trivia('CarriageReturn', 'A newline \'\\r\' character.',
characters=['\\r'], is_new_line=True, serialization_code=5),
Trivia('CarriageReturnLineFeed',
'A newline consists of contiguous \'\\r\' and \'\\n\' characters.',
characters=['\\r', '\\n'], is_new_line=True, serialization_code=6),
Trivia('LineComment', 'A developer line comment, starting with \'//\'',
is_comment=True, serialization_code=8),
Trivia('BlockComment',
'A developer block comment, starting with \'/*\' and ending with'
' \'*/\'.',
is_comment=True, serialization_code=9),
Trivia('DocLineComment',
'A documentation line comment, starting with \'///\'.',
is_comment=True, serialization_code=10),
Trivia('DocBlockComment',
'A documentation block comment, starting with \'/**\' and ending '
'with \'*/\'.',
is_comment=True, serialization_code=11),
Trivia('GarbageText', 'Any skipped garbage text.', serialization_code=12),
]


defverify_no_duplicate_serialization_codes(trivias):
used_codes=set()
fortriviaintrivias:
iftrivia.serialization_codeinused_codes:
error("Serialization code %d used twice for trivia"%
trivia.serialization_code)
used_codes.add(trivia.serialization_code)


verify_no_duplicate_serialization_codes(TRIVIAS)