Module registry 

Helper traits for dynamic XSO builder registries.

Builder registries hold type-erased FromXml::from_events implementations. Registries can be used to dynamically dispatch to a set of FromXml implementations which is not known at compile time.

Under the hood, they are used by the FromXml implementation on Xso<T>, via the DynXso::Registry type.

Note that registries generally do not allow to add arbitrary builders. All builders must originate in a FromXml implementation and their output must be convertible to the specific type the registry is defined for.

The default implementation is BuilderRegistry, which is only available if xso is built with the "std" feature due to the inherent need for a Mutex.

Traits

DynXsoRegistryAdd

Trait for a builder registry supports registering new builders at runtime.

DynXsoRegistryLookup

Trait for a builder registry supports constructing elements.