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# -*- coding: utf-8 -*-
"""
pygments.lexers.rdf
~~~~~~~~~~~~~~~~~~~
Lexers for semantic web and RDF query languages and markup.
:copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, bygroups
from pygments.token import Keyword, Punctuation, String, Number, Operator, \
Whitespace, Name, Literal, Comment, Text
__all__ = ['SparqlLexer']
class SparqlLexer(RegexLexer):
"""
Lexer for `SPARQL <http://www.w3.org/TR/rdf-sparql-query/>`_ query language.
.. versionadded:: 2.0
"""
name = 'SPARQL'
aliases = ['sparql']
filenames = ['*.rq', '*.sparql']
mimetypes = ['application/sparql-query']
flags = re.IGNORECASE
tokens = {
'root': [
(r'\s+', Whitespace),
(r'(select|construct|describe|ask|where|filter|group\s+by|minus|'
r'distinct|reduced|from named|from|order\s+by|limit|'
r'offset|bindings|load|clear|drop|create|add|move|copy|'
r'insert\s+data|delete\s+data|delete\s+where|delete|insert|'
r'using named|using|graph|default|named|all|optional|service|'
r'silent|bind|union|not in|in|as|a)', Keyword),
(r'(prefix|base)(\s+)([a-z][a-z\d_\-]*)(\s*)(\:)',
bygroups(Keyword, Whitespace, Name.Namespace, Whitespace,
Punctuation)),
(r'\?[a-z_][a-z\d_]*', Name.Variable),
(r'<[^>]+>', Name.Label),
(r'([a-z][a-z\d_\-]*)(\:)([a-z][a-z\d_\-]*)',
bygroups(Name.Namespace, Punctuation, Name.Tag)),
(r'(str|lang|langmatches|datatype|bound|iri|uri|bnode|rand|abs|'
r'ceil|floor|round|concat|strlen|ucase|lcase|encode_for_uri|'
r'contains|strstarts|strends|strbefore|strafter|year|month|day|'
r'hours|minutes|seconds|timezone|tz|now|md5|sha1|sha256|sha384|'
r'sha512|coalesce|if|strlang|strdt|sameterm|isiri|isuri|isblank|'
r'isliteral|isnumeric|regex|substr|replace|exists|not exists|'
r'count|sum|min|max|avg|sample|group_concat|separator)\b',
Name.Function),
(r'(true|false)', Literal),
(r'[+\-]?\d*\.\d+', Number.Float),
(r'[+\-]?\d*(:?\.\d+)?[eE][+\-]?\d+', Number.Float),
(r'[+\-]?\d+', Number.Integer),
(r'(\|\||&&|=|\*|\-|\+|/)', Operator),
(r'[(){}.;,:^]', Punctuation),
(r'#[^\n]+', Comment),
(r'"""', String, 'triple-double-quoted-string'),
(r'"', String, 'single-double-quoted-string'),
(r"'''", String, 'triple-single-quoted-string'),
(r"'", String, 'single-single-quoted-string'),
],
'triple-double-quoted-string': [
(r'"""', String, 'end-of-string'),
(r'[^\\]+', String),
(r'\\', String, 'string-escape'),
],
'single-double-quoted-string': [
(r'"', String, 'end-of-string'),
(r'[^"\\\n]+', String),
(r'\\', String, 'string-escape'),
],
'triple-single-quoted-string': [
(r"'''", String, 'end-of-string'),
(r'[^\\]+', String),
(r'\\', String, 'string-escape'),
],
'single-single-quoted-string': [
(r"'", String, 'end-of-string'),
(r"[^'\\\n]+", String),
(r'\\', String, 'string-escape'),
],
'string-escape': [
(r'.', String, '#pop'),
],
'end-of-string': [
(r'(@)([a-z]+(:?-[a-z0-9]+)*)',
bygroups(Operator, Name.Function), '#pop:2'),
(r'\^\^', Operator, '#pop:2'),
(r'', Text, '#pop:2'),
],
}
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