//
// 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
//
//   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.cloud.utils;

public class EnumUtils {
    public static String listValues(Enum<?>[] enums) {
        StringBuilder b = new StringBuilder("[");

        for (Enum<?> e : enums) {
            b.append(e).append(", ");
        }
        b.append("]");
        return b.toString();
    }

    public static <T extends Enum<T>> T fromString(Class<T> clz, String value, T defaultVal) {
        assert (clz != null);

        if (value != null) {
            try {
                return Enum.valueOf(clz, value.trim());
            } catch (IllegalArgumentException ex) {
                assert (false);
            }
        }
        return defaultVal;
    }

    public static <T extends Enum<T>> T fromString(Class<T> clz, String value) {
        assert (clz != null);

        if (value != null) {
            try {
                return Enum.valueOf(clz, value.trim());
            } catch (IllegalArgumentException ex) {
                assert (false);
            }
        }
        return null;
    }
}
