Add standard DOM exception hierarchy.
diff --git a/Lib/xml/dom/__init__.py b/Lib/xml/dom/__init__.py
index 0c9049e..abef398 100644
--- a/Lib/xml/dom/__init__.py
+++ b/Lib/xml/dom/__init__.py
@@ -37,3 +37,71 @@
DOCUMENT_TYPE_NODE = 10
DOCUMENT_FRAGMENT_NODE = 11
NOTATION_NODE = 12
+
+#ExceptionCode
+INDEX_SIZE_ERR = 1
+DOMSTRING_SIZE_ERR = 2
+HIERARCHY_REQUEST_ERR = 3
+WRONG_DOCUMENT_ERR = 4
+INVALID_CHARACTER_ERR = 5
+NO_DATA_ALLOWED_ERR = 6
+NO_MODIFICATION_ALLOWED_ERR = 7
+NOT_FOUND_ERR = 8
+NOT_SUPPORTED_ERR = 9
+INUSE_ATTRIBUTE_ERR = 10
+INVALID_STATE_ERR = 11
+SYNTAX_ERR = 12
+INVALID_MODIFICATION_ERR = 13
+NAMESPACE_ERR = 14
+INVALID_ACCESS_ERR = 15
+
+class DOMException(Exception):
+ """Abstract base class for DOM exceptions.
+ Exceptions with specific codes are specializations of this class."""
+
+ pass
+
+class IndexSizeErr(DOMException):
+ code = INDEX_SIZE_ERR
+
+class DomstringSizeErr(DOMException):
+ code = DOMSTRING_SIZE_ERR
+
+class HierarchyRequestErr(DOMException):
+ code = HIERARCHY_REQUEST_ERR
+
+class WrongDocumentErr(DOMException):
+ code = WRONG_DOCUMENT_ERR
+
+class InvalidCharacterErr(DOMException):
+ code = INVALID_CHARACTER_ERR
+
+class NoDataAllowedErr(DOMException):
+ code = NO_DATA_ALLOWED_ERR
+
+class NoModificationAllowedErr(DOMException):
+ code = NO_MODIFICATION_ALLOWED_ERR
+
+class NotFoundErr(DOMException):
+ code = NOT_FOUND_ERR
+
+class NotSupportedErr(DOMException):
+ code = NOT_SUPPORTED_ERR
+
+class InuseAttributeErr(DOMException):
+ code = INUSE_ATTRIBUTE_ERR
+
+class InvalidStateErr(DOMException):
+ code = INVALID_STATE_ERR
+
+class SyntaxErr(DOMException):
+ code = SYNTAX_ERR
+
+class InvalidModificationErr(DOMException):
+ code = INVALID_MODIFICATION_ERR
+
+class NamespaceErr(DOMException):
+ code = NAMESPACE_ERR
+
+class InvalidAccessErr(DOMException):
+ code = INVALID_ACCESS_ERR