[antlr-interest] Customizing Abstract Syntax Tree

[Abhijit Nandkumar Ghonge]

Hi,

            Can anybody help me with this? Can I customize the Abstract
syntax tree? For example:

I have a parser like this:

class CalcParser extends Parser;

options {

            buildAST = true; // uses CommonAST by default

}



expr

            :           mexpr (PLUS mexpr)* SEMI!

            ;



mexpr

            :           atom (STAR atom)*

            ;



atom:    INT

            ;



I want an Abstract Syntax Tree such as:



2 + ( 3 + 4)



Then I may be able to develop something like this:







Please help.



Regards,

Abhijit.



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