codekingpro/portable-devtools

1"""2    pygments.lexers.maxima3    ~~~~~~~~~~~~~~~~~~~~~~4 5    Lexer for the computer algebra system Maxima.6 7    Derived from pygments/lexers/algebra.py.8 9    :copyright: Copyright 2006-present by the Pygments team, see AUTHORS.10    :license: BSD, see LICENSE for details.11"""12 13import re14 15from pygments.lexer import RegexLexer, bygroups, words16from pygments.token import Text, Comment, Operator, Keyword, Name, String, \17    Number, Punctuation18 19__all__ = ['MaximaLexer']20 21class MaximaLexer(RegexLexer):22    """23    A Maxima lexer.24    Derived from pygments.lexers.MuPADLexer.25    """26    name = 'Maxima'27    url = 'http://maxima.sourceforge.net'28    aliases = ['maxima', 'macsyma']29    filenames = ['*.mac', '*.max']30    version_added = '2.11'31 32    keywords = ('if', 'then', 'else', 'elseif',33                'do', 'while', 'repeat', 'until',34                'for', 'from', 'to', 'downto', 'step', 'thru')35 36    constants = ('%pi', '%e', '%phi', '%gamma', '%i',37                 'und', 'ind', 'infinity', 'inf', 'minf',38                 'true', 'false', 'unknown', 'done')39 40    operators = (r'.', r':', r'=', r'#',41                 r'+', r'-', r'*', r'/', r'^',42                 r'@', r'>', r'<', r'|', r'!', r"'")43 44    operator_words = ('and', 'or', 'not')45 46    tokens = {47        'root': [48            (r'/\*', Comment.Multiline, 'comment'),49            (r'"(?:[^"\\]|\\.)*"', String),50            (r'\(|\)|\[|\]|\{|\}', Punctuation),51            (r'[,;$]', Punctuation),52            (words (constants), Name.Constant),53            (words (keywords), Keyword),54            (words (operators), Operator),55            (words (operator_words), Operator.Word),56            (r'''(?x)57              ((?:[a-zA-Z_#][\w#]*|`[^`]*`)58              (?:::[a-zA-Z_#][\w#]*|`[^`]*`)*)(\s*)([(])''',59             bygroups(Name.Function, Text.Whitespace, Punctuation)),60            (r'''(?x)61              (?:[a-zA-Z_#%][\w#%]*|`[^`]*`)62              (?:::[a-zA-Z_#%][\w#%]*|`[^`]*`)*''', Name.Variable),63            (r'[-+]?(\d*\.\d+([bdefls][-+]?\d+)?|\d+(\.\d*)?[bdefls][-+]?\d+)', Number.Float),64            (r'[-+]?\d+', Number.Integer),65            (r'\s+', Text.Whitespace),66            (r'.', Text)67        ],68        'comment': [69            (r'[^*/]+', Comment.Multiline),70            (r'/\*', Comment.Multiline, '#push'),71            (r'\*/', Comment.Multiline, '#pop'),72            (r'[*/]', Comment.Multiline)73        ]74    }75 76    def analyse_text (text):77        strength = 0.078        # Input expression terminator.79        if re.search (r'\$\s*$', text, re.MULTILINE):80            strength += 0.0581        # Function definition operator.82        if ':=' in text:83            strength += 0.0284        return strength85