Don't know Proto, although possibly, perhaps yes, if necessary.

I expect that we'll have some species that are configuration-driven, some of that configuration is for things like parser-generated calibration, and testing. Basically, testing bottom line says: did this series of data match the species question? Yes, potentially, enter Spirit.

We do something akin to that using Lunula in the C# .NET world today, a crude DSL that yields those type of answers. Now we're migrating to a next generation, Linux / C++ based solution, so my interest in Boost, Spirit, etc.