Class TreeVisitor

java.lang.Object
org.antlr.runtime.tree.TreeVisitor

public class TreeVisitor extends Object
Do a depth first walk of a tree, applying pre() and post() actions as we discover and finish nodes.
  • Field Details

  • Constructor Details

    • TreeVisitor

      public TreeVisitor(TreeAdaptor adaptor)
    • TreeVisitor

      public TreeVisitor()
  • Method Details

    • visit

      public Object visit(Object t, TreeVisitorAction action)
      Visit every node in tree t and trigger an action for each node before/after having visited all of its children. Execute both actions even if t has no children. If a child visit yields a new child, it can update its parent's child list or just return the new child. The child update code works even if the child visit alters its parent and returns the new tree. Return result of applying post action to this node.