content: /*******************************************************************************
   * Copyright 2017 Bstek
   *
   * Licensed 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 com.bstek.ureport.expression.model.expr.el;
  
  import com.bstek.ureport.exception.ReportComputeException;
  import com.bstek.ureport.expression.model.Operator;
  import com.bstek.ureport.utils.ArithUtils;
  
  /**
   * @author
   * @since 4月25日
   */
  public class ElUnit {
  	private Object left;
  	private Object right;
  	private Operator op;
  	private Operator nextOp;
  	private ElUnit nextUnit;
  	public Object compute(){
  		if(right instanceof ElUnit){
  			right=((ElUnit)right).compute();
  		}
  		switch(op){
  		case Add:
  			return ArithUtils.add(left, right);
  		case Complementation:
  			return ArithUtils.com(left, right);
  		case Divide:
  			return ArithUtils.div(left, right);
  		case Multiply:
  			return ArithUtils.mul(left, right);
  		case Subtract:
  			return ArithUtils.sub(left, right);
  		}
  		throw new ReportComputeException("Unknow operator :"+op);
  	}
  	public Object getLeft() {
  		return left;
  	}
  	public void setLeft(Object left) {
  		this.left = left;
  	}
  	public Object getRight() {
  		return right;
  	}
  	public void setRight(Object right) {
  		this.right = right;
  	}
  	public Operator getOp() {
  		return op;
  	}
  	public void setOp(Operator op) {
  		this.op = op;
  	}
  	public Operator getNextOp() {
  		return nextOp;
  	}
  	public void setNextOp(Operator nextOp) {
  		this.nextOp = nextOp;
  	}
  	public ElUnit getNextUnit() {
  		return nextUnit;
  	}
  	public void setNextUnit(ElUnit nextUnit) {
  		this.nextUnit = nextUnit;
  	}
  }
  