AbstractExpression.java

/*
 * Copyright 2014 mango.jfaster.org
 *
 * The Mango Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

package org.jfaster.mango.parser;

import org.jfaster.mango.binding.InvocationContext;

/**
 * 表达式抽象类
 *
 * @author ash
 */
public abstract class AbstractExpression extends SimpleNode {

  public AbstractExpression(int i) {
    super(i);
  }

  public AbstractExpression(Parser p, int i) {
    super(p, i);
  }

  /**
   * 取布尔值
   */
  public abstract boolean evaluate(InvocationContext context);

  /**
   * 取值
   */
  public abstract Object value(InvocationContext context);

}