add dynamic_value.rs and schema.rs, enabling runtime type introspection #392
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Adds
dynamic_value::Reader
,dynamic_struct::Reader
, etc. These will enable a lot of new usage patterns, including making it easy for us to implementDebug
for generated readers.What holds this all together is a new
Introspect
trait, implemented for all Cap'n Proto types:The implementation is a mostly straightfoward port of capnproto-c++'s
dynamic.h
andschema.h
.