/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * SableUtil, a clean room implementation of the Collection API. * * Copyright (C) 1997, 1998 Raja Vallee-Rai (kor@sable.mcgill.ca). * * All rights reserved. * * * * Modifications by Patrick Lam are * * Copyright (C) 1998 Patrick Lam (plam@sable.mcgill.ca). All * * rights reserved. * * * * Modifications by Etienne Gagnon (gagnon@sable.mcgill.ca) are * * Copyright (C) 1998 Etienne Gagnon (gagnon@sable.mcgill.ca). All * * rights reserved. * * * * This work was done as a project of the Sable Research Group, * * School of Computer Science, McGill University, Canada * * (http://www.sable.mcgill.ca/). It is understood that any * * modification not identified as such is not covered by the * * preceding statement. * * * * This work is free software; you can redistribute it and/or * * modify it under the terms of the GNU Library General Public * * License as published by the Free Software Foundation; either * * version 2 of the License, or (at your option) any later version. * * * * This work is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * * Library General Public License for more details. * * * * You should have received a copy of the GNU Library General Public * * License along with this library; if not, write to the * * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * * Boston, MA 02111-1307, USA. * * * * To submit a bug report, send a comment, or get the latest news on * * this project and other Sable Research Group projects, please * * visit the web site: http://www.sable.mcgill.ca/ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* Reference Version ----------------- This is the latest official version on which this file is based. The reference version is: $SableUtilVersion: 1.11 $ Change History -------------- A) Notes: Please use the following template. Most recent changes should appear at the top of the list. - Modified on [date (March 1, 1900)] by [name]. [(*) if appropriate] [description of modification]. Any Modification flagged with "(*)" was done as a project of the Sable Research Group, School of Computer Science, McGill University, Canada (http://www.sable.mcgill.ca/). You should add your copyright, using the following template, at the top of this file, along with other copyrights. * * * Modifications by [name] are * * Copyright (C) [year(s)] [your name (or company)]. All rights * * reserved. * * * B) Changes: - Modified on August 10, 1998 by Patrick Lam (plam@sable.mcgill.ca) (*) Added pass-through toString to UnmodifiableList. - Modified on July 23, 1998 by Raja Vallee-Rai (kor@sable.mcgill.ca) (*) Changed some constructors to satisfy jikes. - Modified on July 23, 1998 by Etienne Gagnon (gagnon@sable.mcgill.ca). (*) Added toArray(Object[]). - Modified on June 15, 1998 by Patrick Lam (plam@sable.mcgill.ca). (*) Added UnmodifiableList and associated inner classes. - Modified on June 15, 1998 by Raja Vallee-Rai (kor@sable.mcgill.ca). (*) First release of this file. */ package ca.mcgill.sable.util; public class Collections { static class UnmodIterator implements Iterator { Iterator it; public UnmodIterator(Iterator it) { this.it = it; } public boolean hasNext() { return it.hasNext(); } public Object next() { return it.next(); } public void remove() throws UnsupportedOperationException, NoSuchElementException { throw new UnsupportedOperationException(); } } static class UnmodListIterator implements ListIterator { ListIterator li; public UnmodListIterator(ListIterator li) { this.li = li; } public boolean hasNext() { return li.hasNext(); } public Object next() throws NoSuchElementException { return li.next(); } public boolean hasPrevious() { return li.hasPrevious(); } public Object previous() throws NoSuchElementException { return li.previous(); } public int nextIndex() { return li.nextIndex(); } public int previousIndex() { return li.previousIndex(); } public void remove() throws UnsupportedOperationException, NoSuchElementException { throw new UnsupportedOperationException(); } public void set(Object o) throws UnsupportedOperationException, NoSuchElementException { throw new UnsupportedOperationException(); } public void add(Object o) throws UnsupportedOperationException { throw new UnsupportedOperationException(); } } static class UnmodList implements List { private List l; public UnmodList(List l) { this.l = l; } public int size() { return l.size(); } public boolean isEmpty() { return l.isEmpty(); } public boolean contains(Object o) { return l.contains(o); } public Object[] toArray() { return l.toArray(); } public void toArray(Object[] a) { l.toArray(a); } public boolean add(Object o) throws UnsupportedOperationException, ClassCastException, IllegalArgumentException { throw new UnsupportedOperationException(); } public boolean remove(Object o) throws UnsupportedOperationException { throw new UnsupportedOperationException(); } public boolean containsAll(Collection c) { return l.containsAll(c); } public boolean addAll(Collection c) throws UnsupportedOperationException, ClassCastException, IllegalArgumentException { throw new UnsupportedOperationException(); } public boolean removeAll(Collection c) throws UnsupportedOperationException { throw new UnsupportedOperationException(); } public boolean retainAll(Collection c) throws UnsupportedOperationException { throw new UnsupportedOperationException(); } public void clear() throws UnsupportedOperationException { throw new UnsupportedOperationException(); } public boolean equals(Object o) { return l.equals(o); } public int hashCode() { return l.hashCode(); } public Object get(int index) throws ArrayIndexOutOfBoundsException { return l.get(index); } public Object set(int index, Object element) throws UnsupportedOperationException, ClassCastException, IllegalArgumentException, ArrayIndexOutOfBoundsException { throw new UnsupportedOperationException(); } public void add(int index, Object element) throws UnsupportedOperationException, ClassCastException, IllegalArgumentException, ArrayIndexOutOfBoundsException { throw new UnsupportedOperationException(); } public Object remove(int index) throws UnsupportedOperationException, ArrayIndexOutOfBoundsException { throw new UnsupportedOperationException(); } public int indexOf(Object o) { return l.indexOf(o); } public int indexOf(Object o, int index) throws ArrayIndexOutOfBoundsException { return l.indexOf(o, index); } public int lastIndexOf(Object o) { return l.lastIndexOf(o); } public int lastIndexOf(Object o, int index) throws ArrayIndexOutOfBoundsException { return l.lastIndexOf(o, index); } public void removeRange(int fromIndex, int toIndex) throws UnsupportedOperationException, ArrayIndexOutOfBoundsException { throw new UnsupportedOperationException(); } public boolean addAll(int index, Collection c) throws UnsupportedOperationException, ClassCastException, IllegalArgumentException, ArrayIndexOutOfBoundsException { throw new UnsupportedOperationException(); } public String toString() { return l.toString(); } public Iterator iterator() { return new UnmodIterator(l.iterator()); } public ListIterator listIterator() { return new UnmodListIterator(l.listIterator()); } public ListIterator listIterator(int index) throws ArrayIndexOutOfBoundsException { return new UnmodListIterator(l.listIterator(index)); } } public static List unmodifiableList(List list) { return new UnmodList(list); } }