[antlr-interest] AST NODE CHOICE

[colettekirwan]

Hi,

I was wondering is it possible using the antlr grammar to  generate a 
tree node based on a choice i.e

I have the following grammar in my Parser

test_statement:! 
 e2:node1_list e1:node2_list e3:(node3_list | node4_list)
        {## = #([TEST_STATEMENT,"TEST_STATEMENT"],#e2,#e1,#e3);}
       
 ; 

I want the last node e3 to be either node3_list or node4_list 
depending on the User's input. The above grammar compiles but does 
not work i.e my Parser code does not generate any code relating to e3.

Is it possible using the antlr grammar that I can state let e3 be 
either node3_list or node4_list depending on Input?

Regards

Colette


 

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