001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.language.simple.types;
018    
019    /**
020     * Types of unary operators supported.
021     * <p/>
022     * An unary operator can only work on the left hand side, which means the operator
023     * should be defined directly <i>after</i> the function it should work upon.
024     */
025    public enum UnaryOperatorType {
026    
027        INC, DEC;
028    
029        public static UnaryOperatorType asOperator(String text) {
030            if ("++".equals(text)) {
031                return INC;
032            } else if ("--".equals(text)) {
033                return DEC;
034            }
035            throw new IllegalArgumentException("Operator not supported: " + text);
036        }
037    
038        public String getOperatorText(UnaryOperatorType operator) {
039            if (operator == INC) {
040                return "++";
041            } else if (operator == DEC) {
042                return "--";
043            }
044            return "";
045        }
046    
047        @Override
048        public String toString() {
049            return getOperatorText(this);
050        }
051    
052    }