mirror of
https://github.com/vanitasvitae/Smack.git
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a4bb5bfda8
Fixes a off-by-one error when incrementing 'seq'. Thanks to Kim Alvefur <zash@zash.se> for spotting this.
81 lines
2.2 KiB
Java
81 lines
2.2 KiB
Java
/**
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*
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* Copyright 2019-2020 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.datatypes;
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import org.jivesoftware.smack.util.NumberUtil;
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/**
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* A number representing an unsigned 32-bit integer. Can be used for values with the XML schema type "xs:unsignedInt".
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*/
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public final class UInt32 extends Scalar {
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private static final long serialVersionUID = 1L;
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private final long number;
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public static final long MIN_VALUE_LONG = 0;
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public static final long MAX_VALUE_LONG = (1L << 32) - 1;
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public static final UInt32 MIN_VALUE = UInt32.from(MAX_VALUE_LONG);
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public static final UInt32 MAX_VALUE = UInt32.from(MAX_VALUE_LONG);
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private UInt32(long number) {
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super(NumberUtil.requireUInt32(number));
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this.number = number;
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}
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public long nativeRepresentation() {
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return number;
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}
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public static UInt32 from(long number) {
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return new UInt32(number);
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}
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@Override
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public int hashCode() {
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// TODO: Use Long.hashCode(number) once Smack's minimum Android SDK level is 24 or higher.
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return (int) (number ^ (number >>> 32));
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}
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@Override
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public boolean equals(Object other) {
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if (other instanceof UInt32) {
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UInt32 otherUint32 = (UInt32) other;
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return number == otherUint32.number;
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}
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return super.equals(other);
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}
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@Override
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public UInt32 getMinValue() {
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return MIN_VALUE;
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}
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@Override
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public UInt32 getMaxValue() {
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return MAX_VALUE;
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}
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@Override
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public UInt32 incrementedByOne() {
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long incrementedValue = number < MAX_VALUE_LONG ? number + 1 : 0;
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return UInt32.from(incrementedValue);
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}
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}
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