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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 2006-2025 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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""" |
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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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version_added = '2.11' |
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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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if re.search (r'\$\s*$', text, re.MULTILINE): |
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strength += 0.05 |
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if ':=' in text: |
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strength += 0.02 |
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return strength |
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