[antlr-interest] Parsing on building AST

[ManimuthuLakshmi Pitchaikani]

Hi,
 
Now I'm parsing the tree when the AST is building up.  
 
-Head
|
|-Node1
|   |
|   |--C11 (change the value to C32 if you find same C11 in node3 also)
|
|-Node2
|
|
|-Node3
    |
    |--C31,C11,C32
 
My question is:
When i'm building the tree, I'll write Node1.  Then i'll come down till node3.  From node3, is it possible to reverse back and the change the value of the childnode in Node1?
 
Any idea, how it can be done?
 
Thanks.
 
Best Regards,
Lakshmi

		
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