added lexer for rql query language (logilab.org/project/rql)

1 files changed, 45 insertions, 0 deletions

diff --git a/pygments/lexers/rql.py b/pygments/lexers/rql.py
new file mode 100644
index 00000000..7c7355dd
--- /dev/null
+++ b/pygments/lexers/rql.py
@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.lexers.rql
+    ~~~~~~~~~~~~~~~~~~~
+
+    Lexer for RQL the relation query language
+
+    http://www.logilab.org/project/rql
+"""
+
+import re
+
+from pygments.lexer import RegexLexer
+from pygments.token import Punctuation, \
+     Text, Comment, Operator, Keyword, Name, String, Number
+
+__all__ = ['RqlLexer']
+
+class RqlLexer(RegexLexer):
+    """
+    Lexer for Relation Query Language.
+    """
+
+    name = 'RQL'
+    aliases = ['rql']
+    filenames = ['*.rql']
+    mimetypes = ['text/x-rql']
+
+    flags = re.IGNORECASE
+    tokens = {
+        'root': [
+            (r'\s+', Text),
+            (r'(DELETE|SET|INSERT|UNION|DISTINCT|WITH|WHERE|BEING|OR'
+             r'|AND|NOT|GROUPBY|HAVING|ORDERBY|ASC|DESC|LIMIT|OFFSET'
+             r'|TODAY|NOW|TRUE|FALSE|NULL|EXISTS)\b', Keyword),
+            (r'[+*/<>=%-]', Operator),
+            (r'(Any|is|instance_of|CWEType|CWRelation)\b', Name.Builtin),
+            (r'[0-9]+', Number.Integer),
+            (r'[A-Z_][A-Z0-9_]*\??', Name),
+            (r"'(''|[^'])*'", String.Single),
+            (r'"(""|[^"])*"', String.Single),
+            (r'[;:()\[\],\.]', Punctuation)
+        ],
+    }
+