Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/pygments/lexers/maxima.py: 71%

1""" 

2 pygments.lexers.maxima 

3 ~~~~~~~~~~~~~~~~~~~~~~ 

4 

5 Lexer for the computer algebra system Maxima. 

6 

7 Derived from pygments/lexers/algebra.py. 

8 

9 :copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS. 

10 :license: BSD, see LICENSE for details. 

11""" 

12 

13import re 

14 

15from pygments.lexer import RegexLexer, bygroups, words 

16from pygments.token import Text, Comment, Operator, Keyword, Name, String, \ 

17 Number, Punctuation 

18 

19__all__ = ['MaximaLexer'] 

20 

21class MaximaLexer(RegexLexer): 

22 """ 

23 A Maxima lexer. 

24 Derived from pygments.lexers.MuPADLexer. 

25 

26 .. versionadded:: 2.11 

27 """ 

28 name = 'Maxima' 

29 url = 'http://maxima.sourceforge.net' 

30 aliases = ['maxima', 'macsyma'] 

31 filenames = ['*.mac', '*.max'] 

32 

33 keywords = ('if', 'then', 'else', 'elseif', 

34 'do', 'while', 'repeat', 'until', 

35 'for', 'from', 'to', 'downto', 'step', 'thru') 

36 

37 constants = ('%pi', '%e', '%phi', '%gamma', '%i', 

38 'und', 'ind', 'infinity', 'inf', 'minf', 

39 'true', 'false', 'unknown', 'done') 

40 

41 operators = (r'.', r':', r'=', r'#', 

42 r'+', r'-', r'*', r'/', r'^', 

43 r'@', r'>', r'<', r'|', r'!', r"'") 

44 

45 operator_words = ('and', 'or', 'not') 

46 

47 tokens = { 

48 'root': [ 

49 (r'/\*', Comment.Multiline, 'comment'), 

50 (r'"(?:[^"\\]|\\.)*"', String), 

51 (r'\(|\)|\[|\]|\{|\}', Punctuation), 

52 (r'[,;$]', Punctuation), 

53 (words (constants), Name.Constant), 

54 (words (keywords), Keyword), 

55 (words (operators), Operator), 

56 (words (operator_words), Operator.Word), 

57 (r'''(?x) 

58 ((?:[a-zA-Z_#][\w#]*|`[^`]*`) 

59 (?:::[a-zA-Z_#][\w#]*|`[^`]*`)*)(\s*)([(])''', 

60 bygroups(Name.Function, Text.Whitespace, Punctuation)), 

61 (r'''(?x) 

62 (?:[a-zA-Z_#%][\w#%]*|`[^`]*`) 

63 (?:::[a-zA-Z_#%][\w#%]*|`[^`]*`)*''', Name.Variable), 

64 (r'[-+]?(\d*\.\d+([bdefls][-+]?\d+)?|\d+(\.\d*)?[bdefls][-+]?\d+)', Number.Float), 

65 (r'[-+]?\d+', Number.Integer), 

66 (r'\s+', Text.Whitespace), 

67 (r'.', Text) 

68 ], 

69 'comment': [ 

70 (r'[^*/]+', Comment.Multiline), 

71 (r'/\*', Comment.Multiline, '#push'), 

72 (r'\*/', Comment.Multiline, '#pop'), 

73 (r'[*/]', Comment.Multiline) 

74 ] 

75 } 

76 

77 def analyse_text (text): 

78 strength = 0.0 

79 # Input expression terminator. 

80 if re.search (r'\$\s*$', text, re.MULTILINE): 

81 strength += 0.05 

82 # Function definition operator. 

83 if ':=' in text: 

84 strength += 0.02 

85 return strength