1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/net/fortuna/ical4j/model/NumberList.java Tue Feb 10 18:12:00 2015 +0100
1.3 @@ -0,0 +1,154 @@
1.4 +/**
1.5 + * Copyright (c) 2012, Ben Fortuna
1.6 + * All rights reserved.
1.7 + *
1.8 + * Redistribution and use in source and binary forms, with or without
1.9 + * modification, are permitted provided that the following conditions
1.10 + * are met:
1.11 + *
1.12 + * o Redistributions of source code must retain the above copyright
1.13 + * notice, this list of conditions and the following disclaimer.
1.14 + *
1.15 + * o Redistributions in binary form must reproduce the above copyright
1.16 + * notice, this list of conditions and the following disclaimer in the
1.17 + * documentation and/or other materials provided with the distribution.
1.18 + *
1.19 + * o Neither the name of Ben Fortuna nor the names of any other contributors
1.20 + * may be used to endorse or promote products derived from this software
1.21 + * without specific prior written permission.
1.22 + *
1.23 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.24 + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.25 + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.26 + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
1.27 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.28 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.29 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.30 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
1.31 + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
1.32 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
1.33 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.34 + */
1.35 +package net.fortuna.ical4j.model;
1.36 +
1.37 +import java.io.Serializable;
1.38 +import java.util.ArrayList;
1.39 +import java.util.Iterator;
1.40 +import java.util.StringTokenizer;
1.41 +
1.42 +import net.fortuna.ical4j.util.Numbers;
1.43 +
1.44 +/**
1.45 + * $Id$ [29-May-2004]
1.46 + *
1.47 + * Defines a list of numbers.
1.48 + *
1.49 + * @author Ben Fortuna
1.50 + */
1.51 +public class NumberList extends ArrayList implements Serializable {
1.52 +
1.53 + private static final long serialVersionUID = -1667481795613729889L;
1.54 +
1.55 + private final int minValue;
1.56 +
1.57 + private final int maxValue;
1.58 +
1.59 + private final boolean allowsNegativeValues;
1.60 +
1.61 + /**
1.62 + * Default constructor.
1.63 + */
1.64 + public NumberList() {
1.65 + this(Integer.MIN_VALUE, Integer.MAX_VALUE, true);
1.66 + }
1.67 +
1.68 + /**
1.69 + * Constructor with limits.
1.70 + * @param minValue the minimum allowable value
1.71 + * @param maxValue the maximum allowable value
1.72 + * @param allowsNegativeValues indicates whether negative values are allowed
1.73 + */
1.74 + public NumberList(int minValue, int maxValue, boolean allowsNegativeValues) {
1.75 + this.minValue = minValue;
1.76 + this.maxValue = maxValue;
1.77 + this.allowsNegativeValues = allowsNegativeValues;
1.78 + }
1.79 +
1.80 + /**
1.81 + * Constructor.
1.82 + * @param aString a string representation of a number list
1.83 + */
1.84 + public NumberList(final String aString) {
1.85 + this(aString, Integer.MIN_VALUE, Integer.MAX_VALUE, true);
1.86 + }
1.87 +
1.88 + /**
1.89 + * @param aString a string representation of a number list
1.90 + * @param minValue the minimum allowable value
1.91 + * @param maxValue the maximum allowable value
1.92 + * @param allowsNegativeValues indicates whether negative values are allowed
1.93 + */
1.94 + public NumberList(final String aString, int minValue, int maxValue, boolean allowsNegativeValues) {
1.95 + this(minValue, maxValue, allowsNegativeValues);
1.96 + final StringTokenizer t = new StringTokenizer(aString, ",");
1.97 + while (t.hasMoreTokens()) {
1.98 + final int value = Numbers.parseInt(t.nextToken());
1.99 + add(new Integer(value));
1.100 + }
1.101 + }
1.102 +
1.103 + /**
1.104 + * @param aNumber a number to add to the list
1.105 + * @return true if the number was added, otherwise false
1.106 + */
1.107 + public final boolean add(final Integer aNumber) {
1.108 + int abs = aNumber.intValue();
1.109 + if ((abs >> 31 | -abs >>> 31) < 0) {
1.110 + if (!allowsNegativeValues) {
1.111 + throw new IllegalArgumentException("Negative value not allowed: " + aNumber);
1.112 + }
1.113 + abs = Math.abs(abs);
1.114 + }
1.115 + if (abs < minValue || abs > maxValue) {
1.116 + throw new IllegalArgumentException(
1.117 + "Value not in range [" + minValue + ".." + maxValue + "]: " + aNumber);
1.118 + }
1.119 + return add((Object) aNumber);
1.120 + }
1.121 +
1.122 + /**
1.123 + * Overrides superclass to throw an <code>IllegalArgumentException</code>
1.124 + * where argument is not a <code>java.lang.Integer</code>.
1.125 + * @param arg0 an object to add
1.126 + * @return true if the object was added, otherwise false
1.127 + * @see List#add(E)
1.128 + */
1.129 + public final boolean add(final Object arg0) {
1.130 + if (!(arg0 instanceof Integer)) {
1.131 + throw new IllegalArgumentException("Argument not a " + Integer.class.getName());
1.132 + }
1.133 + return super.add(arg0);
1.134 + }
1.135 +
1.136 + /**
1.137 + * @param aNumber a number to remove from the list
1.138 + * @return true if the number was removed, otherwise false
1.139 + */
1.140 + public final boolean remove(final Integer aNumber) {
1.141 + return remove((Object) aNumber);
1.142 + }
1.143 +
1.144 + /**
1.145 + * {@inheritDoc}
1.146 + */
1.147 + public final String toString() {
1.148 + final StringBuffer b = new StringBuffer();
1.149 + for (final Iterator i = iterator(); i.hasNext();) {
1.150 + b.append(i.next());
1.151 + if (i.hasNext()) {
1.152 + b.append(',');
1.153 + }
1.154 + }
1.155 + return b.toString();
1.156 + }
1.157 +}
