intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 84 insertions, 0 deletions

diff --git a/contrib/python/Pygments/py3/pygments/lexers/maxima.py b/contrib/python/Pygments/py3/pygments/lexers/maxima.py
new file mode 100644
index 00000000000..73b9eea15b9
--- /dev/null
+++ b/contrib/python/Pygments/py3/pygments/lexers/maxima.py
@@ -0,0 +1,84 @@
+"""
+    pygments.lexers.maxima
+    ~~~~~~~~~~~~~~~~~~~~~~
+
+    Lexer for the computer algebra system Maxima.
+
+    Derived from pygments/lexers/algebra.py.
+
+    :copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+import re
+
+from pygments.lexer import RegexLexer, bygroups, words
+from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
+    Number, Punctuation
+
+__all__ = ['MaximaLexer']
+
+class MaximaLexer(RegexLexer):
+    """
+    A `Maxima <http://maxima.sourceforge.net>`_ lexer.
+    Derived from pygments.lexers.MuPADLexer.
+
+    .. versionadded:: 2.11
+    """
+    name = 'Maxima'
+    aliases = ['maxima', 'macsyma']
+    filenames = ['*.mac', '*.max']
+
+    keywords = ('if', 'then', 'else', 'elseif',
+                'do', 'while', 'repeat', 'until',
+                'for', 'from', 'to', 'downto', 'step', 'thru')
+
+    constants = ('%pi', '%e', '%phi', '%gamma', '%i',
+                 'und', 'ind', 'infinity', 'inf', 'minf',
+                 'true', 'false', 'unknown', 'done')
+
+    operators = (r'.', r':', r'=', r'#',
+                 r'+', r'-', r'*', r'/', r'^',
+                 r'@', r'>', r'<', r'|', r'!', r"'")
+
+    operator_words = ('and', 'or', 'not')
+
+    tokens = {
+        'root': [
+            (r'/\*', Comment.Multiline, 'comment'),
+            (r'"(?:[^"\\]|\\.)*"', String),
+            (r'\(|\)|\[|\]|\{|\}', Punctuation),
+            (r'[,;$]', Punctuation),
+            (words (constants), Name.Constant),
+            (words (keywords), Keyword),
+            (words (operators), Operator),
+            (words (operator_words), Operator.Word),
+            (r'''(?x)
+              ((?:[a-zA-Z_#][\w#]*|`[^`]*`)
+              (?:::[a-zA-Z_#][\w#]*|`[^`]*`)*)(\s*)([(])''',
+             bygroups(Name.Function, Text.Whitespace, Punctuation)),
+            (r'''(?x)
+              (?:[a-zA-Z_#%][\w#%]*|`[^`]*`)
+              (?:::[a-zA-Z_#%][\w#%]*|`[^`]*`)*''', Name.Variable),
+            (r'[-+]?(\d*\.\d+([bdefls][-+]?\d+)?|\d+(\.\d*)?[bdefls][-+]?\d+)', Number.Float),
+            (r'[-+]?\d+', Number.Integer),
+            (r'\s+', Text.Whitespace),
+            (r'.', Text)
+        ],
+        'comment': [
+            (r'[^*/]+', Comment.Multiline),
+            (r'/\*', Comment.Multiline, '#push'),
+            (r'\*/', Comment.Multiline, '#pop'),
+            (r'[*/]', Comment.Multiline)
+        ]
+    }
+
+    def analyse_text (text):
+        strength = 0.0
+        # Input expression terminator.
+        if re.search (r'\$\s*$', text, re.MULTILINE):
+            strength += 0.05
+        # Function definition operator.
+        if ':=' in text:
+            strength += 0.02
+        return strength