/*
 * Copyright (c) 2011 IBM Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 */

package com.ibm.wala.cast.tree.pattern;

import com.ibm.wala.cast.tree.CAstNode;

/**
 * A node pattern that matches an AST node of a certain kind; additionally, the node's children have
 * to match the pattern's child patterns.
 *
 * @author mschaefer
 */
public class NodeOfKind implements NodePattern {
  protected int kind;
  protected NodePattern[] children;

  public NodeOfKind(int kind, NodePattern... children) {
    this.kind = kind;
    this.children = children.clone();
  }

  /* (non-Javadoc)
   * @see pattern.NodePattern#matches(com.ibm.wala.cast.tree.CAstNode)
   */
  @Override
  public boolean matches(CAstNode node) {
    if (node == null || node.getKind() != kind || node.getChildCount() != children.length)
      return false;
    for (int i = 0; i < children.length; ++i)
      if (!children[i].matches(node.getChild(i))) return false;
    return true;
  }
}
