5.2.8. Error Handling
Spicy’s error handling remains quite limited at this point, with more to come here in the future.
Exceptions provide Spicy’s primary mechanism for reporting errors.
Currently, various parts of the runtime system throw exceptions if
they encounter unexpected situations. In particular, the generated
ParsingError exceptions if they find themselves
unable to comprehend their input. However, support for catching
and handling exceptions remains minimal at the moment. For now, only
ParsingError exceptions can be intercepted (but not suppressed) with
%on_error unit hook, which internally is nothing
else than a hook into parser teardown on exceptions.
Spicy doesn’t have
error yet (#90).
Support for resynchronizing parser with their input stream after parse errors is discussed in the section on error recovery.