org.antlr.runtime.tree
Interface TreeVisitorAction


public interface TreeVisitorAction

How to execute code for node t when a visitor visits node t. Execute pre() before visiting children and execute post() after visiting children.


Method Summary
 java.lang.Object post(java.lang.Object t)
          Execute an action after visiting children of t.
 java.lang.Object pre(java.lang.Object t)
          Execute an action before visiting children of t.
 

Method Detail

pre

java.lang.Object pre(java.lang.Object t)
Execute an action before visiting children of t. Return t or a rewritten t. It is up to the visitor to decide what to do with the return value. Children of returned value will be visited if using TreeVisitor.visit().


post

java.lang.Object post(java.lang.Object t)
Execute an action after visiting children of t. Return t or a rewritten t. It is up to the visitor to decide what to do with the return value.



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