package org.checkerframework.dataflow.cfg.node;

import com.sun.source.tree.IdentifierTree;
import com.sun.source.tree.Tree;
import org.checkerframework.javacutil.TreeUtils;

/**
 * A node for a reference to 'this'.
 *
 * <pre>
 *   <em>this</em>
 * </pre>
 */
public class ExplicitThisNode extends ThisNode {

  protected final Tree tree;

  public ExplicitThisNode(Tree t) {
    super(TreeUtils.typeOf(t));
    assert t instanceof IdentifierTree && ((IdentifierTree) t).getName().contentEquals("this");
    tree = t;
  }

  @Override
  public Tree getTree() {
    return tree;
  }

  @Override
  public <R, P> R accept(NodeVisitor<R, P> visitor, P p) {
    return visitor.visitExplicitThis(this, p);
  }

  @Override
  public String toString() {
    return getName();
  }
}