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# *****************************************************************************
#
# Licensed 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.
#
# See NOTICE file for details.
#
# *****************************************************************************
from . import _jcustomizer
import sys as _sys
from . import _jexception
# This contains a customizer for closeable so that we can use the python "with"
# statement.
@_jcustomizer.JImplementationFor("java.lang.AutoCloseable")
class _JCloseable(object):
""" Customizer for ``java.lang.AutoCloseable`` and ``java.io.Closeable``
This customizer adds support of the ``with`` operator to all Java
classes that implement the Java ``AutoCloseable`` interface.
Example:
.. code-block:: python
from java.nio.files import Files, Paths
with Files.newInputStream(Paths.get("foo")) as fd:
# operate on the input stream
# Input stream closes at the end of the block.
"""
def __enter__(self):
return self
def __exit__(self, exception_type, exception_value, traceback):
info = _sys.exc_info()
try:
self.close()
except _jexception.JException as jex:
# Eat the second exception if we are already handling one.
if (info[0] is None):
raise jex
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