[antlr-interest] Please help a newbie!

[Richard Clark]

You're welcome.

I should add that you don't _really_ need a tree walker; you could do 
the calculations right inside your parser and omit the tree-walking 
step. Tree walkers are nice if you have to rearrange a tree (e.g. as a 
step in translating one language to another, or optimizing away certain 
constructs) or if you have to take the same parser output and perform 
several different actions with it (e.g. a 2-pass compiler where the 
first pass gathers symbols and the second pass generates the code -- 
you might choose to implement each pass as a tree walker.)

  ...Richard



 
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