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;
  
  import com.bstek.ureport.exception.ReportParseException;
  
  /**
   * @author
   * @since 2016年11月18日
   */
  public enum Operator {
  	Add,Subtract,Multiply,Divide,Complementation;
  	public static Operator parse(String op){
  		if(op.equals("+")){
  			return Add;
  		}else if(op.equals("-")){
  			return Subtract;
  		}else if(op.equals("*")){
  			return Multiply;
  		}else if(op.equals("/")){
  			return Divide;
  		}else if(op.equals("%")){
  			return Complementation;
  		}else{
  			throw new ReportParseException("Unknow operator :"+op);
  		}
  	}
  	@Override
  	public String toString() {
  		switch(this){
  		case Add:
  			return "+";
  		case Divide:
  			return "/";
  		case Multiply:
  			return "*";
  		case Subtract:
  			return "-";
  		case Complementation:
  			return "%";
  		}
  		throw new IllegalArgumentException("Unknow operator: ["+this+"]");
  	};
  }
  