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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .location import LiteralLocation, UriLocation
from .literal import LiteralLoader
from .uri import UriTextLoader
class LoaderSource(object):
"""
Base class for ARIA loader sources.
Loader sources provide appropriate :class:`Loader` instances for locations.
"""
def get_loader(self, context, location, origin_location):
raise NotImplementedError
class DefaultLoaderSource(LoaderSource):
"""
The default ARIA loader source will generate a :class:`UriTextLoader` for
:class:`UriLocation` and a :class:`LiteralLoader` for a :class:`LiteralLocation`.
"""
def get_loader(self, context, location, origin_location):
if isinstance(location, UriLocation):
return UriTextLoader(context, location, origin_location)
elif isinstance(location, LiteralLocation):
return LiteralLoader(location)
return super(DefaultLoaderSource, self).get_loader(context, location, origin_location)
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