| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| package org.apache.qpid.server.protocol.v1_0.type; |
| |
| public final class UnsignedInteger extends Number implements Comparable<UnsignedInteger> |
| { |
| private final int _underlying; |
| private static final UnsignedInteger[] cachedValues = new UnsignedInteger[256]; |
| |
| static |
| { |
| for(int i = 0; i < 256; i++) |
| { |
| cachedValues[i] = new UnsignedInteger(i); |
| } |
| } |
| |
| public static final UnsignedInteger ZERO = cachedValues[0]; |
| public static final UnsignedInteger ONE = cachedValues[1]; |
| public static final UnsignedInteger MAX_VALUE = new UnsignedInteger(0xffffffff); |
| |
| |
| public UnsignedInteger(int underlying) |
| { |
| _underlying = underlying; |
| } |
| |
| @Override |
| public int intValue() |
| { |
| return _underlying; |
| } |
| |
| @Override |
| public long longValue() |
| { |
| return ((long) _underlying) & 0xFFFFFFFFl; |
| } |
| |
| @Override |
| public float floatValue() |
| { |
| return (float) longValue(); |
| } |
| |
| @Override |
| public double doubleValue() |
| { |
| return (double) longValue(); |
| } |
| |
| @Override |
| public boolean equals(Object o) |
| { |
| if (this == o) |
| { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) |
| { |
| return false; |
| } |
| |
| UnsignedInteger that = (UnsignedInteger) o; |
| |
| if (_underlying != that._underlying) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| public int compareTo(UnsignedInteger o) |
| { |
| return Long.signum(longValue() - o.longValue()); |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return _underlying; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return String.valueOf(longValue()); |
| } |
| |
| public static UnsignedInteger valueOf(int underlying) |
| { |
| if((underlying & 0xFFFFFF00) == 0) |
| { |
| return cachedValues[underlying]; |
| } |
| else |
| { |
| return new UnsignedInteger(underlying); |
| } |
| } |
| |
| public UnsignedInteger add(final UnsignedInteger i) |
| { |
| int val = _underlying + i._underlying; |
| return UnsignedInteger.valueOf(val); |
| } |
| |
| public UnsignedInteger subtract(final UnsignedInteger i) |
| { |
| int val = _underlying - i._underlying; |
| return UnsignedInteger.valueOf(val); |
| } |
| |
| public static UnsignedInteger valueOf(final String value) |
| { |
| long longVal = Long.parseLong(value); |
| return valueOf(longVal); |
| } |
| |
| public static UnsignedInteger valueOf(final long longVal) |
| { |
| if(longVal < 0L || longVal >= (1L<<32)) |
| { |
| throw new NumberFormatException("Value \""+longVal+"\" lies outside the range [" + 0L + "-" + (1L<<32) +")."); |
| } |
| return valueOf((int)longVal); |
| } |
| |
| } |