diff options
Diffstat (limited to 'src/main/java/org/apache/commons/math3/exception/util/ArgUtils.java')
-rw-r--r-- | src/main/java/org/apache/commons/math3/exception/util/ArgUtils.java | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/main/java/org/apache/commons/math3/exception/util/ArgUtils.java b/src/main/java/org/apache/commons/math3/exception/util/ArgUtils.java new file mode 100644 index 0000000..74214cc --- /dev/null +++ b/src/main/java/org/apache/commons/math3/exception/util/ArgUtils.java @@ -0,0 +1,55 @@ +/* + * 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 org.apache.commons.math3.exception.util; + +import java.util.List; +import java.util.ArrayList; + +/** + * Utility class for transforming the list of arguments passed to + * constructors of exceptions. + * + */ +public class ArgUtils { + /** + * Class contains only static methods. + */ + private ArgUtils() {} + + /** + * Transform a multidimensional array into a one-dimensional list. + * + * @param array Array (possibly multidimensional). + * @return a list of all the {@code Object} instances contained in + * {@code array}. + */ + public static Object[] flatten(Object[] array) { + final List<Object> list = new ArrayList<Object>(); + if (array != null) { + for (Object o : array) { + if (o instanceof Object[]) { + for (Object oR : flatten((Object[]) o)) { + list.add(oR); + } + } else { + list.add(o); + } + } + } + return list.toArray(); + } +} |