1 files changed, 96 insertions, 0 deletions
diff --git a/google_appengine/google/appengine/api/yaml_errors.py b/google_appengine/google/appengine/api/yaml_errors.py
new file mode 100755
index 0000000..6896e2c
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+++ b/google_appengine/google/appengine/api/yaml_errors.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Google Inc.
+#
+# 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.
+#
+
+"""Errors used in the YAML API, which is used by app developers."""
+
+
+
+class Error(Exception):
+  """Base datastore yaml error type."""
+
+class ProtocolBufferParseError(Error):
+  """Error in protocol buffer parsing"""
+
+
+class EmptyConfigurationFile(Error):
+  """Tried to load empty configuration file."""
+
+
+class MultipleConfigurationFile(Error):
+  """Tried to load configuration file with multiple objects."""
+
+
+class UnexpectedAttribute(Error):
+  """Raised when an unexpected attribute is encounted."""
+
+
+class DuplicateAttribute(Error):
+  """Generated when an attribute is assigned to twice."""
+
+
+class ListenerConfigurationError(Error):
+  """Generated when there is a parsing problem due to configuration."""
+
+
+class IllegalEvent(Error):
+  """Raised when an unexpected event type is received by listener."""
+
+
+class InternalError(Error):
+  """Raised when an internal implementation error is detected."""
+
+
+class EventListenerError(Error):
+  """Top level exception raised by YAML listener.
+
+  Any exception raised within the process of parsing a YAML file via an
+  EventListener is caught and wrapped in an EventListenerError.  The causing
+  exception is maintained, but additional useful information is saved which
+  can be used for reporting useful information to users.
+
+  Attributes:
+    cause: The original exception which caused the EventListenerError.
+  """
+
+  def __init__(self, cause):
+    """Initialize event-listener error."""
+    if hasattr(cause, 'args') and cause.args:
+      Error.__init__(self, *cause.args)
+    else:
+      Error.__init__(self, str(cause))
+    self.cause = cause
+
+
+class EventListenerYAMLError(EventListenerError):
+  """Generated specifically for yaml.error.YAMLError."""
+
+
+class EventError(EventListenerError):
+  """Generated specifically when an error occurs in event handler.
+
+  Attributes:
+    cause: The original exception which caused the EventListenerError.
+    event: Event being handled when exception occured.
+  """
+
+  def __init__(self, cause, event):
+    """Initialize event-listener error."""
+    EventListenerError.__init__(self, cause)
+    self.event = event
+
+  def __str__(self):
+    return '%s\n%s' % (self.cause, self.event.start_mark)