Yet another Kernel interpreter

I wrote another Kernel-ish interpreter in JavaScript: Virtua.

This time, no tail-call optimization or first-class continuations, just plain old pedestrian control flow: LOOP, CATCH, THROW, UNWIND-PROTECT (unexpectedly, this didn't make the interpreter much smaller than the one with TCO and continuations.)

Probably the only interesting thing in there is that everything is fully OOP: EVAL is a message, as is COMBINE, as is MATCH - which means every object can potentially control its own evaluation, act as a combiner, and be used as a left-hand-side pattern in matching.

Again: Kernel is nice and elegant, but the interpretetive overhead of fexprs is killer [Edit: haven't measured it, and see this]. Maybe it doesn't matter for what I want to do: script web GUIs.

Previously: The Kernel Underground.