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# QEMU Monitor Protocol Lexer Extension
#
# Copyright (C) 2019, Red Hat Inc.
#
# Authors:
# Eduardo Habkost <ehabkost@redhat.com>
# John Snow <jsnow@redhat.com>
#
# This work is licensed under the terms of the GNU GPLv2 or later.
# See the COPYING file in the top-level directory.
"""qmp_lexer is a Sphinx extension that provides a QMP lexer for code blocks."""
from pygments.lexer import RegexLexer, DelegatingLexer
from pygments.lexers.data import JsonLexer
from pygments import token
from sphinx import errors
class QMPExampleMarkersLexer(RegexLexer):
"""
QMPExampleMarkersLexer lexes QMP example annotations.
This lexer adds support for directionality flow and elision indicators.
"""
tokens = {
'root': [
(r'-> ', token.Generic.Prompt),
(r'<- ', token.Generic.Prompt),
(r' ?\.{3} ?', token.Generic.Prompt),
]
}
class QMPExampleLexer(DelegatingLexer):
"""QMPExampleLexer lexes annotated QMP examples."""
def __init__(self, **options):
super(QMPExampleLexer, self).__init__(JsonLexer, QMPExampleMarkersLexer,
token.Error, **options)
def setup(sphinx):
"""For use by the Sphinx extensions API."""
try:
sphinx.require_sphinx('2.1')
sphinx.add_lexer('QMP', QMPExampleLexer)
except errors.VersionRequirementError:
sphinx.add_lexer('QMP', QMPExampleLexer())
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