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Diffstat (limited to 'treelib/exceptions.py')
-rw-r--r-- | treelib/exceptions.py | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/treelib/exceptions.py b/treelib/exceptions.py new file mode 100644 index 0000000..fc955c5 --- /dev/null +++ b/treelib/exceptions.py @@ -0,0 +1,50 @@ +class NodePropertyError(Exception): + """Basic Node attribute error""" + + pass + + +class NodeIDAbsentError(NodePropertyError): + """Exception throwed if a node's identifier is unknown""" + + pass + + +class NodePropertyAbsentError(NodePropertyError): + """Exception throwed if a node's data property is not specified""" + + pass + + +class MultipleRootError(Exception): + """Exception throwed if more than one root exists in a tree.""" + + pass + + +class DuplicatedNodeIdError(Exception): + """Exception throwed if an identifier already exists in a tree.""" + + pass + + +class LinkPastRootNodeError(Exception): + """ + Exception throwed in Tree.link_past_node() if one attempts + to "link past" the root node of a tree. + """ + + pass + + +class InvalidLevelNumber(Exception): + pass + + +class LoopError(Exception): + """ + Exception thrown if trying to move node B to node A's position + while A is B's ancestor. + """ + + pass |