Package org.antlr.runtime.tree
Interface TreeVisitorAction
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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.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description 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.
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Method Detail
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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().
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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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