exceptions, do we need them?

[pmlopes]

All code is not using exception checking except StringUtil that uses BadConversion exception, for platforms where we are not using RTTI and Excption handling (to keep the binary size small) e.g.: PSP this forces the build to be with exceptions enabled.

Is it really necessary? or could we live with out it?

[cjcliffe]

We could possibly live without it, the DataTree system (our core binary/xml/json data conduit) depends on exceptions to be thrown to catch Type conversion errors (not that I always use it unfortunately ;) and such but it's a special case and we could possibly wrap in a simpler error message queue and return null responses instead for platforms like PSP and DC.