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86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
2 years ago
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"""
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pygments.lexers.maxima
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~~~~~~~~~~~~~~~~~~~~~~
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Lexer for the computer algebra system Maxima.
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Derived from pygments/lexers/algebra.py.
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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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import re
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from pygments.lexer import RegexLexer, bygroups, words
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation
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__all__ = ['MaximaLexer']
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class MaximaLexer(RegexLexer):
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"""
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A Maxima lexer.
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Derived from pygments.lexers.MuPADLexer.
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.. versionadded:: 2.11
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"""
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name = 'Maxima'
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url = 'http://maxima.sourceforge.net'
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aliases = ['maxima', 'macsyma']
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filenames = ['*.mac', '*.max']
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keywords = ('if', 'then', 'else', 'elseif',
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'do', 'while', 'repeat', 'until',
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'for', 'from', 'to', 'downto', 'step', 'thru')
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constants = ('%pi', '%e', '%phi', '%gamma', '%i',
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'und', 'ind', 'infinity', 'inf', 'minf',
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'true', 'false', 'unknown', 'done')
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operators = (r'.', r':', r'=', r'#',
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r'+', r'-', r'*', r'/', r'^',
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r'@', r'>', r'<', r'|', r'!', r"'")
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operator_words = ('and', 'or', 'not')
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tokens = {
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'root': [
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(r'/\*', Comment.Multiline, 'comment'),
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(r'"(?:[^"\\]|\\.)*"', String),
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(r'\(|\)|\[|\]|\{|\}', Punctuation),
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(r'[,;$]', Punctuation),
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(words (constants), Name.Constant),
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(words (keywords), Keyword),
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(words (operators), Operator),
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(words (operator_words), Operator.Word),
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(r'''(?x)
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((?:[a-zA-Z_#][\w#]*|`[^`]*`)
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(?:::[a-zA-Z_#][\w#]*|`[^`]*`)*)(\s*)([(])''',
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bygroups(Name.Function, Text.Whitespace, Punctuation)),
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(r'''(?x)
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(?:[a-zA-Z_#%][\w#%]*|`[^`]*`)
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(?:::[a-zA-Z_#%][\w#%]*|`[^`]*`)*''', Name.Variable),
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(r'[-+]?(\d*\.\d+([bdefls][-+]?\d+)?|\d+(\.\d*)?[bdefls][-+]?\d+)', Number.Float),
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(r'[-+]?\d+', Number.Integer),
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(r'\s+', Text.Whitespace),
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(r'.', Text)
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],
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'comment': [
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(r'[^*/]+', Comment.Multiline),
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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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}
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def analyse_text (text):
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strength = 0.0
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# Input expression terminator.
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if re.search (r'\$\s*$', text, re.MULTILINE):
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strength += 0.05
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# Function definition operator.
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if ':=' in text:
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strength += 0.02
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return strength
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