intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 85 insertions, 0 deletions

diff --git a/contrib/python/Pygments/py2/pygments/lexers/graph.py b/contrib/python/Pygments/py2/pygments/lexers/graph.py
new file mode 100644
index 00000000000..f7b45e29ee3
--- /dev/null
+++ b/contrib/python/Pygments/py2/pygments/lexers/graph.py
@@ -0,0 +1,85 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.lexers.graph
+    ~~~~~~~~~~~~~~~~~~~~~
+
+    Lexers for graph query languages.
+
+    :copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+import re
+
+from pygments.lexer import RegexLexer, include, bygroups, using, this
+from pygments.token import Keyword, Punctuation, Comment, Operator, Name,\
+    String, Number, Whitespace
+
+
+__all__ = ['CypherLexer']
+
+
+class CypherLexer(RegexLexer):
+    """
+    For `Cypher Query Language
+    <https://neo4j.com/docs/developer-manual/3.3/cypher/>`_
+
+    For the Cypher version in Neo4j 3.3
+
+    .. versionadded:: 2.0
+    """
+    name = 'Cypher'
+    aliases = ['cypher']
+    filenames = ['*.cyp', '*.cypher']
+
+    flags = re.MULTILINE | re.IGNORECASE
+
+    tokens = {
+        'root': [
+            include('comment'),
+            include('keywords'),
+            include('clauses'),
+            include('relations'),
+            include('strings'),
+            include('whitespace'),
+            include('barewords'),
+        ],
+        'comment': [
+            (r'^.*//.*\n', Comment.Single),
+        ],
+        'keywords': [
+            (r'(create|order|match|limit|set|skip|start|return|with|where|'
+             r'delete|foreach|not|by|true|false)\b', Keyword),
+        ],
+        'clauses': [
+            # based on https://neo4j.com/docs/cypher-refcard/3.3/
+            (r'(all|any|as|asc|ascending|assert|call|case|create|'
+             r'create\s+index|create\s+unique|delete|desc|descending|'
+             r'distinct|drop\s+constraint\s+on|drop\s+index\s+on|end|'
+             r'ends\s+with|fieldterminator|foreach|in|is\s+node\s+key|'
+             r'is\s+null|is\s+unique|limit|load\s+csv\s+from|match|merge|none|'
+             r'not|null|on\s+match|on\s+create|optional\s+match|order\s+by|'
+             r'remove|return|set|skip|single|start|starts\s+with|then|union|'
+             r'union\s+all|unwind|using\s+periodic\s+commit|yield|where|when|'
+             r'with)\b', Keyword),
+        ],
+        'relations': [
+            (r'(-\[)(.*?)(\]->)', bygroups(Operator, using(this), Operator)),
+            (r'(<-\[)(.*?)(\]-)', bygroups(Operator, using(this), Operator)),
+            (r'(-\[)(.*?)(\]-)', bygroups(Operator, using(this), Operator)),
+            (r'-->|<--|\[|\]', Operator),
+            (r'<|>|<>|=|<=|=>|\(|\)|\||:|,|;', Punctuation),
+            (r'[.*{}]', Punctuation),
+        ],
+        'strings': [
+            (r'"(?:\\[tbnrf\'"\\]|[^\\"])*"', String),
+            (r'`(?:``|[^`])+`', Name.Variable),
+        ],
+        'whitespace': [
+            (r'\s+', Whitespace),
+        ],
+        'barewords': [
+            (r'[a-z]\w*', Name),
+            (r'\d+', Number),
+        ],
+    }