content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.apache.atlas.groovy;
  
  import org.apache.atlas.AtlasException;
  
  import java.util.List;
  
  /**
   * Represents an arithmetic expression such as a+b.
   */
  public class ArithmeticExpression extends BinaryExpression {
      public ArithmeticExpression(GroovyExpression left, ArithmeticOperator op, GroovyExpression right) {
          super(left, op.getGroovyValue(), right);
      }
  
      private ArithmeticExpression(GroovyExpression left, String op, GroovyExpression right) {
          super(left, op, right);
      }
  
      @Override
      public GroovyExpression copy(List<GroovyExpression> newChildren) {
          return new ArithmeticExpression(newChildren.get(0), op, newChildren.get(1));
      }
  
      /**
       * Allowed arithmetic operators.
       */
      public enum ArithmeticOperator {
          PLUS("+"),
          MINUS("-"),
          TIMES("*"),
          DIVIDE("/"),
          MODULUS("%");
  
          private final String groovyValue;
  
          ArithmeticOperator(String groovyValue) {
              this.groovyValue = groovyValue;
          }
  
          public static ArithmeticOperator lookup(String groovyValue) throws AtlasException {
              for (ArithmeticOperator op : ArithmeticOperator.values()) {
                  if (op.getGroovyValue().equals(groovyValue)) {
                      return op;
                  }
              }
  
              throw new AtlasException("Unknown Operator:" + groovyValue);
          }
  
          public String getGroovyValue() {
              return groovyValue;
          }
      }
  }
  