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300 lines
10 KiB
Python
300 lines
10 KiB
Python
2 years ago
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"""
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pygments.lexers.webidl
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~~~~~~~~~~~~~~~~~~~~~~
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Lexers for Web IDL, including some extensions.
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:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from pygments.lexer import RegexLexer, default, include, words
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from pygments.token import Comment, Keyword, Name, Number, Punctuation, \
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String, Text
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__all__ = ['WebIDLLexer']
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_builtin_types = (
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# primitive types
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'byte', 'octet', 'boolean',
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r'(?:unsigned\s+)?(?:short|long(?:\s+long)?)',
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r'(?:unrestricted\s+)?(?:float|double)',
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# string types
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'DOMString', 'ByteString', 'USVString',
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# exception types
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'Error', 'DOMException',
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# typed array types
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'Uint8Array', 'Uint16Array', 'Uint32Array', 'Uint8ClampedArray',
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'Float32Array', 'Float64Array',
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# buffer source types
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'ArrayBuffer', 'DataView', 'Int8Array', 'Int16Array', 'Int32Array',
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# other
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'any', 'void', 'object', 'RegExp',
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)
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_identifier = r'_?[A-Za-z][a-zA-Z0-9_-]*'
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_keyword_suffix = r'(?![\w-])'
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_string = r'"[^"]*"'
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class WebIDLLexer(RegexLexer):
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"""
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For Web IDL.
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.. versionadded:: 2.6
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"""
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name = 'Web IDL'
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url = 'https://www.w3.org/wiki/Web_IDL'
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aliases = ['webidl']
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filenames = ['*.webidl']
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tokens = {
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'common': [
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(r'\s+', Text),
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(r'(?s)/\*.*?\*/', Comment.Multiline),
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(r'//.*', Comment.Single),
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(r'^#.*', Comment.Preproc),
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],
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'root': [
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include('common'),
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(r'\[', Punctuation, 'extended_attributes'),
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(r'partial' + _keyword_suffix, Keyword),
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(r'typedef' + _keyword_suffix, Keyword, ('typedef', 'type')),
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(r'interface' + _keyword_suffix, Keyword, 'interface_rest'),
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(r'enum' + _keyword_suffix, Keyword, 'enum_rest'),
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(r'callback' + _keyword_suffix, Keyword, 'callback_rest'),
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(r'dictionary' + _keyword_suffix, Keyword, 'dictionary_rest'),
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(r'namespace' + _keyword_suffix, Keyword, 'namespace_rest'),
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(_identifier, Name.Class, 'implements_rest'),
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],
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'extended_attributes': [
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include('common'),
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(r',', Punctuation),
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(_identifier, Name.Decorator),
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(r'=', Punctuation, 'extended_attribute_rest'),
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(r'\(', Punctuation, 'argument_list'),
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(r'\]', Punctuation, '#pop'),
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],
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'extended_attribute_rest': [
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include('common'),
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(_identifier, Name, 'extended_attribute_named_rest'),
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(_string, String),
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(r'\(', Punctuation, 'identifier_list'),
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default('#pop'),
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],
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'extended_attribute_named_rest': [
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include('common'),
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(r'\(', Punctuation, 'argument_list'),
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default('#pop'),
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],
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'argument_list': [
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include('common'),
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(r'\)', Punctuation, '#pop'),
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default('argument'),
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],
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'argument': [
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include('common'),
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(r'optional' + _keyword_suffix, Keyword),
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(r'\[', Punctuation, 'extended_attributes'),
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(r',', Punctuation, '#pop'),
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(r'\)', Punctuation, '#pop:2'),
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default(('argument_rest', 'type'))
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],
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'argument_rest': [
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include('common'),
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(_identifier, Name.Variable),
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(r'\.\.\.', Punctuation),
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(r'=', Punctuation, 'default_value'),
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default('#pop'),
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],
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'identifier_list': [
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include('common'),
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(_identifier, Name.Class),
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(r',', Punctuation),
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(r'\)', Punctuation, '#pop'),
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],
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'type': [
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include('common'),
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(r'(?:' + r'|'.join(_builtin_types) + r')' + _keyword_suffix,
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Keyword.Type, 'type_null'),
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(words(('sequence', 'Promise', 'FrozenArray'),
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suffix=_keyword_suffix), Keyword.Type, 'type_identifier'),
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(_identifier, Name.Class, 'type_identifier'),
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(r'\(', Punctuation, 'union_type'),
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],
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'union_type': [
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include('common'),
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(r'or' + _keyword_suffix, Keyword),
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(r'\)', Punctuation, ('#pop', 'type_null')),
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default('type'),
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],
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'type_identifier': [
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(r'<', Punctuation, 'type_list'),
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default(('#pop', 'type_null'))
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],
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'type_null': [
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(r'\?', Punctuation),
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default('#pop:2'),
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],
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'default_value': [
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include('common'),
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include('const_value'),
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(_string, String, '#pop'),
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(r'\[\s*\]', Punctuation, '#pop'),
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],
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'const_value': [
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include('common'),
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(words(('true', 'false', '-Infinity', 'Infinity', 'NaN', 'null'),
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suffix=_keyword_suffix), Keyword.Constant, '#pop'),
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(r'-?(?:(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+)(?:[Ee][+-]?[0-9]+)?' +
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r'|[0-9]+[Ee][+-]?[0-9]+)', Number.Float, '#pop'),
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(r'-?[1-9][0-9]*', Number.Integer, '#pop'),
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(r'-?0[Xx][0-9A-Fa-f]+', Number.Hex, '#pop'),
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(r'-?0[0-7]*', Number.Oct, '#pop'),
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],
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'typedef': [
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include('common'),
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(_identifier, Name.Class),
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(r';', Punctuation, '#pop'),
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],
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'namespace_rest': [
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include('common'),
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(_identifier, Name.Namespace),
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(r'\{', Punctuation, 'namespace_body'),
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(r';', Punctuation, '#pop'),
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],
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'namespace_body': [
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include('common'),
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(r'\[', Punctuation, 'extended_attributes'),
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(r'readonly' + _keyword_suffix, Keyword),
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(r'attribute' + _keyword_suffix,
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Keyword, ('attribute_rest', 'type')),
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(r'const' + _keyword_suffix, Keyword, ('const_rest', 'type')),
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(r'\}', Punctuation, '#pop'),
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default(('operation_rest', 'type')),
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],
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'interface_rest': [
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include('common'),
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(_identifier, Name.Class),
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(r':', Punctuation),
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(r'\{', Punctuation, 'interface_body'),
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(r';', Punctuation, '#pop'),
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],
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'interface_body': [
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(words(('iterable', 'maplike', 'setlike'), suffix=_keyword_suffix),
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Keyword, 'iterable_maplike_setlike_rest'),
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(words(('setter', 'getter', 'creator', 'deleter', 'legacycaller',
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'inherit', 'static', 'stringifier', 'jsonifier'),
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suffix=_keyword_suffix), Keyword),
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(r'serializer' + _keyword_suffix, Keyword, 'serializer_rest'),
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(r';', Punctuation),
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include('namespace_body'),
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],
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'attribute_rest': [
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include('common'),
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(_identifier, Name.Variable),
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(r';', Punctuation, '#pop'),
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],
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'const_rest': [
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include('common'),
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(_identifier, Name.Constant),
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(r'=', Punctuation, 'const_value'),
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(r';', Punctuation, '#pop'),
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],
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'operation_rest': [
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include('common'),
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(r';', Punctuation, '#pop'),
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default('operation'),
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],
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'operation': [
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include('common'),
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(_identifier, Name.Function),
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(r'\(', Punctuation, 'argument_list'),
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(r';', Punctuation, '#pop:2'),
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],
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'iterable_maplike_setlike_rest': [
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include('common'),
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(r'<', Punctuation, 'type_list'),
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(r';', Punctuation, '#pop'),
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],
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'type_list': [
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include('common'),
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(r',', Punctuation),
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(r'>', Punctuation, '#pop'),
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default('type'),
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],
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'serializer_rest': [
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include('common'),
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(r'=', Punctuation, 'serialization_pattern'),
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(r';', Punctuation, '#pop'),
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default('operation'),
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],
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'serialization_pattern': [
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include('common'),
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(_identifier, Name.Variable, '#pop'),
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(r'\{', Punctuation, 'serialization_pattern_map'),
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(r'\[', Punctuation, 'serialization_pattern_list'),
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],
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'serialization_pattern_map': [
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include('common'),
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(words(('getter', 'inherit', 'attribute'),
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suffix=_keyword_suffix), Keyword),
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(r',', Punctuation),
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(_identifier, Name.Variable),
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(r'\}', Punctuation, '#pop:2'),
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],
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'serialization_pattern_list': [
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include('common'),
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(words(('getter', 'attribute'), suffix=_keyword_suffix), Keyword),
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(r',', Punctuation),
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(_identifier, Name.Variable),
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(r']', Punctuation, '#pop:2'),
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],
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'enum_rest': [
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include('common'),
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(_identifier, Name.Class),
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(r'\{', Punctuation, 'enum_body'),
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(r';', Punctuation, '#pop'),
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],
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'enum_body': [
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include('common'),
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(_string, String),
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(r',', Punctuation),
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(r'\}', Punctuation, '#pop'),
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],
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'callback_rest': [
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include('common'),
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(r'interface' + _keyword_suffix,
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Keyword, ('#pop', 'interface_rest')),
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(_identifier, Name.Class),
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(r'=', Punctuation, ('operation', 'type')),
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(r';', Punctuation, '#pop'),
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],
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'dictionary_rest': [
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include('common'),
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(_identifier, Name.Class),
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(r':', Punctuation),
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(r'\{', Punctuation, 'dictionary_body'),
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(r';', Punctuation, '#pop'),
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],
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'dictionary_body': [
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include('common'),
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(r'\[', Punctuation, 'extended_attributes'),
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(r'required' + _keyword_suffix, Keyword),
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(r'\}', Punctuation, '#pop'),
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default(('dictionary_item', 'type')),
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],
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'dictionary_item': [
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include('common'),
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(_identifier, Name.Variable),
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(r'=', Punctuation, 'default_value'),
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(r';', Punctuation, '#pop'),
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],
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'implements_rest': [
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include('common'),
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(r'implements' + _keyword_suffix, Keyword),
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(_identifier, Name.Class),
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(r';', Punctuation, '#pop'),
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],
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}
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