Removal of custom type system #401
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Remove no longer necessary `type: ignore`'s
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Removes the runtime generated class hierarchy in favour of explicitly inheriting form
UFLType. All information is propagated through the class hierarchy inheriting fromUFLTypeand thus follows standard Python rules. This removes the need for 'checking the type system' and opens the expression hierarchy up for further changes and upgrades.The decorator
ufl_typenow only sets the properties_ufl_typecode_and_ufl_handler_name_, but no more of other 'traits'. These two options are somewhat special and are required to exist prior to anyUFLTypeinstantiation (so__new__is not usable for those). This should probably be addressed at a later stage to remove the@ufl_typecompletely.Global class tracking and profiling information is moved from the
UFLTypebase class to the newUFLRegistry, which for now maintains both (classes and profiling). This can also be further refined in the future.First (big) step to resolving #127: Introduces a test case showcasing how external types now fit into the UFL abstractions and can be handled with the same transformations.