author | Pawel Solyga <Pawel.Solyga@gmail.com> |
Thu, 29 Jan 2009 09:33:50 +0000 | |
changeset 1058 | 6acbbb68f032 |
parent 149 | f2e327a7c5de |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python |
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# |
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# Copyright 2007 Google Inc. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# |
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"""Errors used in the YAML API, which is used by app developers.""" |
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class Error(Exception): |
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"""Base datastore yaml error type.""" |
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class ProtocolBufferParseError(Error): |
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"""Error in protocol buffer parsing""" |
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class EmptyConfigurationFile(Error): |
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"""Tried to load empty configuration file.""" |
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class MultipleConfigurationFile(Error): |
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"""Tried to load configuration file with multiple objects.""" |
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class UnexpectedAttribute(Error): |
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"""Raised when an unexpected attribute is encounted.""" |
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class DuplicateAttribute(Error): |
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"""Generated when an attribute is assigned to twice.""" |
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class ListenerConfigurationError(Error): |
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"""Generated when there is a parsing problem due to configuration.""" |
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class IllegalEvent(Error): |
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"""Raised when an unexpected event type is received by listener.""" |
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class InternalError(Error): |
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"""Raised when an internal implementation error is detected.""" |
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class EventListenerError(Error): |
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"""Top level exception raised by YAML listener. |
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Any exception raised within the process of parsing a YAML file via an |
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EventListener is caught and wrapped in an EventListenerError. The causing |
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exception is maintained, but additional useful information is saved which |
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can be used for reporting useful information to users. |
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Attributes: |
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cause: The original exception which caused the EventListenerError. |
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""" |
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def __init__(self, cause): |
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"""Initialize event-listener error.""" |
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if hasattr(cause, 'args') and cause.args: |
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Error.__init__(self, *cause.args) |
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else: |
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Error.__init__(self, str(cause)) |
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self.cause = cause |
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class EventListenerYAMLError(EventListenerError): |
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"""Generated specifically for yaml.error.YAMLError.""" |
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class EventError(EventListenerError): |
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"""Generated specifically when an error occurs in event handler. |
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Attributes: |
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cause: The original exception which caused the EventListenerError. |
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event: Event being handled when exception occured. |
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""" |
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def __init__(self, cause, event): |
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"""Initialize event-listener error.""" |
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EventListenerError.__init__(self, cause) |
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self.event = event |
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def __str__(self): |
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return '%s\n%s' % (self.cause, self.event.start_mark) |