73 lines
2.2 KiB
Java
73 lines
2.2 KiB
Java
/*******************************************************************************
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* Copyright (c) 2002 - 2006 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package com.ibm.wala.util.intset;
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import java.util.Iterator;
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import java.util.TreeSet;
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/**
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* An object that creates mutable sparse int sets.
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*/
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public class MutableSparseIntSetFactory implements MutableIntSetFactory<MutableSparseIntSet> {
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/**
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* @throws IllegalArgumentException if set is null
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*/
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public MutableSparseIntSet make(int[] set) {
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if (set == null) {
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throw new IllegalArgumentException("set is null");
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}
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if (set.length == 0) {
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return MutableSparseIntSet.makeEmpty();
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} else {
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// XXX not very efficient.
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TreeSet<Integer> T = new TreeSet<Integer>();
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for (int i = 0; i < set.length; i++) {
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T.add(new Integer(set[i]));
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}
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int[] copy = new int[T.size()];
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int i = 0;
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for (Iterator<Integer> it = T.iterator(); it.hasNext();) {
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Integer I = it.next();
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copy[i++] = I.intValue();
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}
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MutableSparseIntSet result = new MutableSparseIntSet(copy);
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return result;
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}
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}
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/**
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* @param string
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*/
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public MutableSparseIntSet parse(String string) throws NumberFormatException {
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int[] backingStore = SparseIntSet.parseIntArray(string);
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return new MutableSparseIntSet(backingStore);
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}
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/*
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* @see com.ibm.wala.util.intset.MutableIntSetFactory#make(com.ibm.wala.util.intset.IntSet)
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*/
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public MutableSparseIntSet makeCopy(IntSet x) throws IllegalArgumentException {
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if (x == null) {
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throw new IllegalArgumentException("x == null");
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}
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return MutableSparseIntSet.make(x);
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}
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/*
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* @see com.ibm.wala.util.intset.MutableIntSetFactory#make()
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*/
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public MutableSparseIntSet make() {
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return MutableSparseIntSet.makeEmpty();
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}
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}
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