Update ExitNodeDispatcher
to support subclasses, improved customization
#3125
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Fixes # .
Summary/Motivation:
This PR updates the
ExitNodeDispatcher
to better support extensibility:Note that this does not address #3111 (although these changes are compatible with adding an
etype
class attribute).Changes proposed in this PR:
unexpected_expression_type()
method so derived dispatchers can change the behavior for unbknown expression types (enables simpler implementation of bypass unrecognized expression types in compute_bounds_on_expr #3086)Legal Acknowledgement
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