99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
"""
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pygments.lexers.wren
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~~~~~~~~~~~~~~~~~~~~
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Lexer for Wren.
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:copyright: Copyright 2006-2024 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import re
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from pygments.lexer import include, RegexLexer, words
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from pygments.token import Whitespace, Punctuation, Keyword, Name, Comment, \
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Operator, Number, String
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__all__ = ['WrenLexer']
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class WrenLexer(RegexLexer):
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"""
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For Wren source code, version 0.4.0.
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"""
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name = 'Wren'
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url = 'https://wren.io'
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aliases = ['wren']
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filenames = ['*.wren']
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version_added = '2.14'
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flags = re.MULTILINE | re.DOTALL
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tokens = {
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'root': [
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# Whitespace.
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(r'\s+', Whitespace),
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(r'[,\\\[\]{}]', Punctuation),
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# Really 'root', not '#push': in 'interpolation',
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# parentheses inside the interpolation expression are
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# Punctuation, not String.Interpol.
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(r'\(', Punctuation, 'root'),
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(r'\)', Punctuation, '#pop'),
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# Keywords.
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(words((
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'as', 'break', 'class', 'construct', 'continue', 'else',
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'for', 'foreign', 'if', 'import', 'return', 'static', 'super',
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'this', 'var', 'while'), prefix = r'(?<!\.)',
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suffix = r'\b'), Keyword),
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(words((
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'true', 'false', 'null'), prefix = r'(?<!\.)',
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suffix = r'\b'), Keyword.Constant),
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(words((
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'in', 'is'), prefix = r'(?<!\.)',
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suffix = r'\b'), Operator.Word),
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# Comments.
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(r'/\*', Comment.Multiline, 'comment'), # Multiline, can nest.
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(r'//.*?$', Comment.Single), # Single line.
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(r'#.*?(\(.*?\))?$', Comment.Special), # Attribute or shebang.
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# Names and operators.
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(r'[!%&*+\-./:<=>?\\^|~]+', Operator),
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(r'[a-z][a-zA-Z_0-9]*', Name),
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(r'[A-Z][a-zA-Z_0-9]*', Name.Class),
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(r'__[a-zA-Z_0-9]*', Name.Variable.Class),
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(r'_[a-zA-Z_0-9]*', Name.Variable.Instance),
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# Numbers.
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(r'0x[0-9a-fA-F]+', Number.Hex),
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(r'\d+(\.\d+)?([eE][-+]?\d+)?', Number.Float),
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# Strings.
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(r'""".*?"""', String), # Raw string
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(r'"', String, 'string'), # Other string
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],
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'comment': [
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(r'/\*', Comment.Multiline, '#push'),
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(r'\*/', Comment.Multiline, '#pop'),
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(r'([^*/]|\*(?!/)|/(?!\*))+', Comment.Multiline),
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],
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'string': [
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(r'"', String, '#pop'),
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(r'\\[\\%"0abefnrtv]', String.Escape), # Escape.
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(r'\\x[a-fA-F0-9]{2}', String.Escape), # Byte escape.
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(r'\\u[a-fA-F0-9]{4}', String.Escape), # Unicode escape.
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(r'\\U[a-fA-F0-9]{8}', String.Escape), # Long Unicode escape.
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(r'%\(', String.Interpol, 'interpolation'),
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(r'[^\\"%]+', String), # All remaining characters.
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],
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'interpolation': [
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# redefine closing paren to be String.Interpol
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(r'\)', String.Interpol, '#pop'),
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include('root'),
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],
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}
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