[antlr-interest] ast or not...

[Pady Srinivasan]

Hi,

I am a beginner with antlr and dynamic languages. I am reading terence's 
antlr book. The language I am trying to develop is a simple if-elseif 
language and some actions based on that. This will be interpreted at run 
time. There will be some input ( model objects ) to the parser and then 
based on this data, the if/elseif conditions will be evaluated at runtime, 
and then the actions executed - and some new model objects returned after 
the actions. I dont have to emit any source code. So given this situation, 
would I need to be developing an ast/tree grammer etc ? For simple 
interpreted languages, is an ast/tree grammer etc really needed ? Can I just 
do something like the expression parser with the actions as listed in 
Terence's book ?

Thx

-- pady