javacc-doc 5.0-4 / usr / share / doc / javacc / examples / VTransformer / SimpleNode.java

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//package VTransformer;

public class SimpleNode implements Node {
  protected Node parent;
  protected Node[] children;
  protected int id;
  protected JavaParser parser;

  protected Token first, last;

  public SimpleNode(int i) {
    id = i;
  }

  public SimpleNode(JavaParser p, int i) {
    this(i);
    parser = p;
  }

  public static Node jjtCreate(JavaParser p, int id) {
    return new SimpleNode(p, id);
  }

  public void jjtOpen() {
    first = parser.getToken(1);	// new
  }

  public void jjtClose() {
    last = parser.getToken(0);	// new
  }

  public Token getFirstToken() { return first; } // new
  public Token getLastToken() { return last; }   // new

  public void jjtSetParent(Node n) { parent = n; }
  public Node jjtGetParent() { return parent; }

  public void jjtAddChild(Node n, int i) {
    if (children == null) {
      children = new Node[i + 1];
    } else if (i >= children.length) {
      Node c[] = new Node[i + 1];
      System.arraycopy(children, 0, c, 0, children.length);
      children = c;
    }
    children[i] = n;
  }

  public Node jjtGetChild(int i) {
    return children[i];
  }

  public int jjtGetNumChildren() {
    return (children == null) ? 0 : children.length;
  }

  /** Accept the visitor. **/
  public Object jjtAccept(JavaParserVisitor visitor, Object data) {
    return visitor.visit(this, data);
  }

  /** Accept the visitor. **/
  public Object acceptChildren(JavaParserVisitor visitor, Object data) {
    if (children != null) {
      for (int i = 0; i < children.length; ++i) {
        children[i].jjtAccept(visitor, data);
      }
    }
    return data;
  }

  /* You can override these two methods in subclasses of SimpleNode to
     customize the way the node appears when the tree is dumped.  If
     your output uses more than one line you should override
     toString(String), otherwise overriding toString() is probably all
     you need to do. */

  public String toString() { return JavaParserTreeConstants.jjtNodeName[id]; }
  public String toString(String prefix) { return prefix + toString(); }

  /* Override this method if you want to customize how the node dumps
     out its children. */

  public void dump(String prefix) {
    System.out.println(toString(prefix));
    if (children != null) {
      for (int i = 0; i < children.length; ++i) {
	SimpleNode n = (SimpleNode)children[i];
	if (n != null) {
	  n.dump(prefix + " ");
	}
      }
    }
  }
}