| package org.eclipse.persistence.internal.libraries.antlr.runtime.tree; |
| |
| /** How to execute code for node t when a visitor visits node t. Execute |
| * pre() before visiting children and execute post() after visiting children. |
| */ |
| public interface TreeVisitorAction { |
| /** 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(). |
| */ |
| public Object pre(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. |
| */ |
| public Object post(Object t); |
| } |
