pygments.lexers.webidl.py Maven / Gradle / Ivy
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# -*- coding: utf-8 -*-
"""
pygments.lexers.webidl
~~~~~~~~~~~~~~~~~~~
Lexers for Web IDL, including some extensions.
:copyright: Copyright 2006-2016 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, default, include, words
from pygments.token import Comment, Keyword, Name, Number, Punctuation, \
String, Text
__all__ = ['WebIDLLexer']
_builtin_types = (
# primitive types
'byte', 'octet', 'boolean',
r'(?:unsigned\s+)?(?:short|long(?:\s+long)?)',
r'(?:unrestricted\s+)?(?:float|double)',
# string types
'DOMString', 'ByteString', 'USVString',
# exception types
'Error', 'DOMException',
# typed array types
'Uint8Array', 'Uint16Array', 'Uint32Array', 'Uint8ClampedArray',
'Float32Array', 'Float64Array',
# buffer source types
'ArrayBuffer', 'DataView', 'Int8Array', 'Int16Array', 'Int32Array',
# other
'any', 'void', 'object', 'RegExp',
)
_identifier = r'_?[A-Za-z][0-9A-Z_a-z-]*'
_keyword_suffix = r'(?![\w-])'
_string = r'"[^"]*"'
class WebIDLLexer(RegexLexer):
"""
For Web IDL.
.. versionadded:: 2.6
"""
name = 'Web IDL'
aliases = ['webidl']
filenames = ['*.webidl']
tokens = {
'common': [
(r'\s+', Text),
(r'(?s)/\*.*?\*/', Comment.Multiline),
(r'//.*', Comment.Single),
(r'^#.*', Comment.Preproc),
],
'root': [
include('common'),
(r'\[', Punctuation, 'extended_attributes'),
(r'partial' + _keyword_suffix, Keyword),
(r'typedef' + _keyword_suffix, Keyword, ('typedef', 'type')),
(r'interface' + _keyword_suffix, Keyword, 'interface_rest'),
(r'enum' + _keyword_suffix, Keyword, 'enum_rest'),
(r'callback' + _keyword_suffix, Keyword, 'callback_rest'),
(r'dictionary' + _keyword_suffix, Keyword, 'dictionary_rest'),
(r'namespace' + _keyword_suffix, Keyword, 'namespace_rest'),
(_identifier, Name.Class, 'implements_rest'),
],
'extended_attributes': [
include('common'),
(r',', Punctuation),
(_identifier, Name.Decorator),
(r'=', Punctuation, 'extended_attribute_rest'),
(r'\(', Punctuation, 'argument_list'),
(r'\]', Punctuation, '#pop'),
],
'extended_attribute_rest': [
include('common'),
(_identifier, Name, 'extended_attribute_named_rest'),
(_string, String),
(r'\(', Punctuation, 'identifier_list'),
default('#pop'),
],
'extended_attribute_named_rest': [
include('common'),
(r'\(', Punctuation, 'argument_list'),
default('#pop'),
],
'argument_list': [
include('common'),
(r'\)', Punctuation, '#pop'),
default('argument'),
],
'argument': [
include('common'),
(r'optional' + _keyword_suffix, Keyword),
(r'\[', Punctuation, 'extended_attributes'),
(r',', Punctuation, '#pop'),
(r'\)', Punctuation, '#pop:2'),
default(('argument_rest', 'type'))
],
'argument_rest': [
include('common'),
(_identifier, Name.Variable),
(r'\.\.\.', Punctuation),
(r'=', Punctuation, 'default_value'),
default('#pop'),
],
'identifier_list': [
include('common'),
(_identifier, Name.Class),
(r',', Punctuation),
(r'\)', Punctuation, '#pop'),
],
'type': [
include('common'),
(r'(?:' + r'|'.join(_builtin_types) + r')' + _keyword_suffix,
Keyword.Type, 'type_null'),
(words(('sequence', 'Promise', 'FrozenArray'),
suffix=_keyword_suffix), Keyword.Type, 'type_identifier'),
(_identifier, Name.Class, 'type_identifier'),
(r'\(', Punctuation, 'union_type'),
],
'union_type': [
include('common'),
(r'or' + _keyword_suffix, Keyword),
(r'\)', Punctuation, ('#pop', 'type_null')),
default('type'),
],
'type_identifier': [
(r'<', Punctuation, 'type_list'),
default(('#pop', 'type_null'))
],
'type_null': [
(r'\??', Punctuation, '#pop:2'),
],
'default_value': [
include('common'),
include('const_value'),
(_string, String, '#pop'),
(r'\[\s*\]', Punctuation, '#pop'),
],
'const_value': [
include('common'),
(words(('true', 'false', '-Infinity', 'Infinity', 'NaN', 'null'),
suffix=_keyword_suffix), Keyword.Constant, '#pop'),
(r'-?(?:(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+)(?:[Ee][+-]?[0-9]+)?' +
r'|[0-9]+[Ee][+-]?[0-9]+)', Number.Float, '#pop'),
(r'-?[1-9][0-9]*', Number.Integer, '#pop'),
(r'-?0[Xx][0-9A-Fa-f]+', Number.Hex, '#pop'),
(r'-?0[0-7]*', Number.Oct, '#pop'),
],
'typedef': [
include('common'),
(_identifier, Name.Class),
(r';', Punctuation, '#pop'),
],
'namespace_rest': [
include('common'),
(_identifier, Name.Namespace),
(r'\{', Punctuation, 'namespace_body'),
(r';', Punctuation, '#pop'),
],
'namespace_body': [
include('common'),
(r'\[', Punctuation, 'extended_attributes'),
(r'readonly' + _keyword_suffix, Keyword),
(r'attribute' + _keyword_suffix,
Keyword, ('attribute_rest', 'type')),
(r'const' + _keyword_suffix, Keyword, ('const_rest', 'type')),
(r'\}', Punctuation, '#pop'),
default(('operation_rest', 'type')),
],
'interface_rest': [
include('common'),
(_identifier, Name.Class),
(r':', Punctuation),
(r'\{', Punctuation, 'interface_body'),
(r';', Punctuation, '#pop'),
],
'interface_body': [
(words(('iterable', 'maplike', 'setlike'), suffix=_keyword_suffix),
Keyword, 'iterable_maplike_setlike_rest'),
(words(('setter', 'getter', 'creator', 'deleter', 'legacycaller',
'inherit', 'static', 'stringifier', 'jsonifier'),
suffix=_keyword_suffix), Keyword),
(r'serializer' + _keyword_suffix, Keyword, 'serializer_rest'),
(r';', Punctuation),
include('namespace_body'),
],
'attribute_rest': [
include('common'),
(_identifier, Name.Variable),
(r';', Punctuation, '#pop'),
],
'const_rest': [
include('common'),
(_identifier, Name.Constant),
(r'=', Punctuation, 'const_value'),
(r';', Punctuation, '#pop'),
],
'operation_rest': [
include('common'),
(r';', Punctuation, '#pop'),
default('operation'),
],
'operation': [
include('common'),
(_identifier, Name.Function),
(r'\(', Punctuation, 'argument_list'),
(r';', Punctuation, '#pop:2'),
],
'iterable_maplike_setlike_rest': [
include('common'),
(r'<', Punctuation, 'type_list'),
(r';', Punctuation, '#pop'),
],
'type_list': [
include('common'),
(r',', Punctuation),
(r'>', Punctuation, '#pop'),
default('type'),
],
'serializer_rest': [
include('common'),
(r'=', Punctuation, 'serialization_pattern'),
(r';', Punctuation, '#pop'),
default('operation'),
],
'serialization_pattern': [
include('common'),
(_identifier, Name.Variable, '#pop'),
(r'\{', Punctuation, 'serialization_pattern_map'),
(r'\[', Punctuation, 'serialization_pattern_list'),
],
'serialization_pattern_map': [
include('common'),
(words(('getter', 'inherit', 'attribute'),
suffix=_keyword_suffix), Keyword),
(r',', Punctuation),
(_identifier, Name.Variable),
(r'\}', Punctuation, '#pop:2'),
],
'serialization_pattern_list': [
include('common'),
(words(('getter', 'attribute'), suffix=_keyword_suffix), Keyword),
(r',', Punctuation),
(_identifier, Name.Variable),
(r']', Punctuation, '#pop:2'),
],
'enum_rest': [
include('common'),
(_identifier, Name.Class),
(r'\{', Punctuation, 'enum_body'),
(r';', Punctuation, '#pop'),
],
'enum_body': [
include('common'),
(_string, String),
(r',', Punctuation),
(r'\}', Punctuation, '#pop'),
],
'callback_rest': [
include('common'),
(r'interface' + _keyword_suffix,
Keyword, ('#pop', 'interface_rest')),
(_identifier, Name.Class),
(r'=', Punctuation, ('operation', 'type')),
(r';', Punctuation, '#pop'),
],
'dictionary_rest': [
include('common'),
(_identifier, Name.Class),
(r':', Punctuation),
(r'\{', Punctuation, 'dictionary_body'),
(r';', Punctuation, '#pop'),
],
'dictionary_body': [
include('common'),
(r'\[', Punctuation, 'extended_attributes'),
(r'required' + _keyword_suffix, Keyword),
(r'\}', Punctuation, '#pop'),
default(('dictionary_item', 'type')),
],
'dictionary_item': [
include('common'),
(_identifier, Name.Variable),
(r'=', Punctuation, 'default_value'),
(r';', Punctuation, '#pop'),
],
'implements_rest': [
include('common'),
(r'implements' + _keyword_suffix, Keyword),
(_identifier, Name.Class),
(r';', Punctuation, '#pop'),
],
}