/*****************************************************************************
* Copyright (c) 2012 CEA LIST.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.infra.tools.util;
import java.util.ArrayList;
import java.util.List;
public class ListHelper {
/**
* Converts an array to a List
*
* This method is similar to Arrays.asList, except that it returns
* a writeable list
*
* @param array
* The array to transform into a List
* @return
* A List containing the same elements as the array
*/
public static <T> List<T> asList(T[] array) {
if(array == null) {
return new ArrayList<T>();
}
List<T> result = new ArrayList<T>(array.length);
for(T t : array) {
result.add(t);
}
return result;
}
/**
* Invokes the toString() method recursively on this list's elements.
* The values are separated by ", "
*
* @param list
* The list whose string representation to return
* @return
*
* @see #deepToString(List, String)
*/
public static String deepToString(List<?> list) {
return deepToString(list, ", ");
}
/**
* Invokes the toString() method recursively on this list's elements.
* The values are separated by the given separator
*
* @param list
* The list whose string representation to return
* @param separator
* The string to insert between each element's string representation
* @return
*
* @see #deepToString(List)
*/
public static String deepToString(List<?> list, String separator) {
boolean firstElement = true;
String result = "";
for(Object item : list) {
if(firstElement) {
firstElement = false;
} else {
result += separator;
}
result += item == null ? null : item.toString();
}
return result;
}
}