[antlr-interest] Article against TreeWalkers

[mental at rydia.net]

Quoting mental at rydia.net:

> In principle, given appropriate navigation primitives,
> this approach to parsing could be generalized to pretty much any
> acyclic data structure.

Actually, I guess a directed, acyclic data structure is kind of a
tree by definition.  You can add more degrees of freedom, but a
tree is a tree is a tree...

-mental