summaryrefslogtreecommitdiff
path: root/pygments/lexers/graph.py
blob: 1abaf6d358203d264d25eb2855edcbfe76d87c62 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
# -*- coding: utf-8 -*-
"""
    pygments.lexers.graph
    ~~~~~~~~~~~~~~~~~~~~~

    Lexers for graph query languages.

    :copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

import re

from pygments.lexer import RegexLexer, include, bygroups
from pygments.token import Keyword, Punctuation, Text, Comment, Operator, Name,\
String, Number, Generic


__all__ = ['CypherLexer']


class CypherLexer(RegexLexer):
    """
    For `Cypher Query Language
    <http://docs.neo4j.org/chunked/milestone/cypher-query-lang.html>`_

    For the Cypher version in Neo4J 2.0

    .. 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')
            ],
        'comment': [(r'^.*//.*\n', Comment.Single)],
        'keywords': [
            (r'create|order|match|limit|set|skip|start|return|with|where|delete'
             r'|foreach|not| by ', Keyword)],
        'clauses': [(r' all | any | as | asc |create|create unique|delete|'
                     r'desc |distinct|foreach| in |is null|limit|match|none|'
                     r'order by|return|set|skip|single|start|union|where|with',
                     Keyword)],
        'relations': [(r'-->|-\[.*\]->|<-\[.*\]-|<--|\[|\]', Operator),
                      (r'<|>|<>|=|<=|=>|\(|\)|\||:|,|;', Punctuation)],
        'strings': [(r'\".*\"', String)]
        }