[antlr-interest] Interating over a list in an AST

[Tim Hilgenberg]

I'm trying to figure out how to create a "for" loop around an AST node 
that has between zero and n children. I'll use the Cminus walker example.

Suppose I wanted to print out all the formal paramaters in the "function" 
definition. How do I get the following logic:

function
    :   ^(FUNC type ID formalParameter* block)
       {
        String formalParmString;
        for (... interate over "formalParamter*"...) { 
formalParameterString = formalParamterString + " "+       
$formalParameter.text }
        System.out.println("define "+$type.text+" "+$ID.text+"(" + 
formalParmString+ ")");}
    ;

formalParameter
    :   ^(ARG type ID)
    ;


 
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