79 lines
2.2 KiB
Python
79 lines
2.2 KiB
Python
# -*- 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, using, this
|
|
from pygments.token import Keyword, Punctuation, Comment, Operator, Name,\
|
|
String, Number, Whitespace
|
|
|
|
|
|
__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'),
|
|
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)\b', Keyword),
|
|
],
|
|
'clauses': [
|
|
# TODO: many missing ones, see http://docs.neo4j.org/refcard/2.0/
|
|
(r'(all|any|as|asc|create|create\s+unique|delete|'
|
|
r'desc|distinct|foreach|in|is\s+null|limit|match|none|'
|
|
r'order\s+by|return|set|skip|single|start|union|where|with)\b',
|
|
Keyword),
|
|
],
|
|
'relations': [
|
|
(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),
|
|
],
|
|
}
|