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76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
from Node import error
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from kinds import lowercase_first_word # noqa: I201
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class Trivia(object):
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def __init__(self, name, comment, serialization_code, characters=[],
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swift_characters=[], is_new_line=False, is_comment=False):
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self.name = name
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self.comment = comment
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self.serialization_code = serialization_code
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self.characters = characters
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self.lower_name = lowercase_first_word(name)
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self.is_new_line = is_new_line
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self.is_comment = is_comment
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# Swift sometimes doesn't support escaped characters like \f or \v;
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# we should allow specifying alternatives explicitly.
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self.swift_characters = swift_characters if swift_characters else\
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characters
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assert len(self.swift_characters) == len(self.characters)
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def characters_len(self):
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return len(self.characters)
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def is_collection(self):
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return self.characters_len() > 0
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TRIVIAS = [
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Trivia('Space', 'A space \' \' character.', characters=[' '],
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serialization_code=0),
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Trivia('Tab', 'A tab \'\\t\' character.', characters=['\\t'],
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serialization_code=1),
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Trivia('VerticalTab', 'A vertical tab \'\\v\' character.',
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characters=['\\v'], swift_characters=['\\u{2B7F}'],
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serialization_code=2),
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Trivia('Formfeed', 'A form-feed \'f\' character.', characters=['\\f'],
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swift_characters=['\\u{240C}'], serialization_code=3),
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Trivia('Newline', 'A newline \'\\n\' character.', characters=['\\n'],
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is_new_line=True, serialization_code=4),
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Trivia('CarriageReturn', 'A newline \'\\r\' character.',
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characters=['\\r'], is_new_line=True, serialization_code=5),
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Trivia('CarriageReturnLineFeed',
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'A newline consists of contiguous \'\\r\' and \'\\n\' characters.',
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characters=['\\r', '\\n'], is_new_line=True, serialization_code=6),
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Trivia('Backtick',
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'A backtick \'`\' character, used to escape identifiers.',
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characters=['`'], serialization_code=7),
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Trivia('LineComment', 'A developer line comment, starting with \'//\'',
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is_comment=True, serialization_code=8),
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Trivia('BlockComment',
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'A developer block comment, starting with \'/*\' and ending with'
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' \'*/\'.',
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is_comment=True, serialization_code=9),
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Trivia('DocLineComment',
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'A documentation line comment, starting with \'///\'.',
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is_comment=True, serialization_code=10),
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Trivia('DocBlockComment',
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'A documentation block comment, starting with \'/**\' and ending '
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'with \'*/\'.',
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is_comment=True, serialization_code=11),
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Trivia('GarbageText', 'Any skipped garbage text.', serialization_code=12),
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]
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def verify_no_duplicate_serialization_codes(trivias):
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used_codes = set()
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for trivia in trivias:
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if trivia.serialization_code in used_codes:
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error("Serialization code %d used twice for trivia" %
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trivia.serialization_code)
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used_codes.add(trivia.serialization_code)
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verify_no_duplicate_serialization_codes(TRIVIAS)
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