95 lines
3.1 KiB
Python
95 lines
3.1 KiB
Python
"""
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pygments.lexers.carbon
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~~~~~~~~~~~~~~~~~~~~~~
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Lexers for the Carbon programming language.
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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 RegexLexer, words
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation, Whitespace
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__all__ = ['CarbonLexer']
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class CarbonLexer(RegexLexer):
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"""
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For Carbon source.
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"""
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name = 'Carbon'
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url = 'https://github.com/carbon-language/carbon-lang'
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filenames = ['*.carbon']
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aliases = ['carbon']
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mimetypes = ['text/x-carbon']
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version_added = '2.15'
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flags = re.MULTILINE | re.DOTALL
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tokens = {
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'root': [
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(r'\n', Whitespace),
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(r'\s+', Whitespace),
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(r'\\\n', Text),
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# comments
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(r'//(.*?)\n', Comment.Single),
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(r'/(\\\n)?[*].*?[*](\\\n)?/', Comment.Multiline),
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# Declaration
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(r'(package|import|api|namespace|library)\b', Keyword.Namespace),
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(r'(abstract|alias|fn|class|interface|let|var|virtual|external|'
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r'base|addr|extends|choice|constraint|impl)\b', Keyword.Declaration),
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# Keywords
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(words(('as', 'or', 'not', 'and', 'break', 'continue', 'case',
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'default', 'if', 'else', 'destructor', 'for', 'forall',
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'while', 'where', 'then', 'in', 'is', 'return', 'returned',
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'friend', 'partial', 'private', 'protected', 'observe', 'Self',
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'override', 'final', 'match', 'type', 'like'), suffix=r'\b'), Keyword),
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(r'(self)\b', Keyword.Pseudo),
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(r'(true|false)\b', Keyword.Constant),
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(r'(auto|bool|string|i8|i16|i32|i64|u8|u16|u32|u64|'
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r'f8|f16|f32|f64)\b', Keyword.Type),
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# numeric literals
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(r'[0-9]*[.][0-9]+', Number.Double),
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(r'0b[01]+', Number.Bin),
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(r'0o[0-7]+', Number.Oct),
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(r'0x[0-9a-fA-F]+', Number.Hex),
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(r'[0-9]+', Number.Integer),
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# string literal
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(r'"(\\.|[^"\\])*"', String),
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# char literal
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(r'\'(\\.|[^\'\\])\'', String.Char),
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# tokens
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(r'<<=|>>=|<<|>>|<=|>=|\+=|-=|\*=|/=|\%=|\|=|&=|\^=|&&|\|\||&|\||'
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r'\+\+|--|\%|\^|\~|==|!=|::|[.]{3}|->|=>|[+\-*/&]', Operator),
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(r'[|<>=!()\[\]{}.,;:\?]', Punctuation),
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# identifiers
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(r'[^\W\d]\w*', Name.Other),
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]
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}
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def analyse_text(text):
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result = 0
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if 'forall' in text:
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result += 0.1
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if 'type' in text:
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result += 0.1
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if 'Self' in text:
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result += 0.1
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if 'observe' in text:
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result += 0.1
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if 'package' in text:
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result += 0.1
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if 'library' in text:
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result += 0.1
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if 'choice' in text:
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result += 0.1
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if 'addr' in text:
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result += 0.1
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if 'constraint' in text:
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result += 0.1
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if 'impl' in text:
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result += 0.1
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return result
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