| /** |
| * Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior |
| * University |
| * |
| * Licensed 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.projectfloodlight.openflow.types; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.projectfloodlight.openflow.exceptions.OFParseError; |
| import org.projectfloodlight.openflow.protocol.OFMessageReader; |
| import org.projectfloodlight.openflow.protocol.Writeable; |
| |
| import com.google.common.hash.PrimitiveSink; |
| import com.google.common.primitives.UnsignedBytes; |
| |
| public class U8 implements Writeable, OFValueType<U8> { |
| private final static byte ZERO_VAL = 0; |
| public final static U8 ZERO = new U8(ZERO_VAL); |
| |
| private static final byte NO_MASK_VAL = (byte) 0xFF; |
| public static final U8 NO_MASK = new U8(NO_MASK_VAL); |
| public static final U8 FULL_MASK = ZERO; |
| |
| private final byte raw; |
| |
| private U8(byte raw) { |
| this.raw = raw; |
| } |
| |
| public static final U8 of(short value) { |
| if(value == ZERO_VAL) |
| return ZERO; |
| if(value == NO_MASK_VAL) |
| return NO_MASK; |
| |
| return new U8(t(value)); |
| } |
| |
| public static final U8 ofRaw(byte value) { |
| return new U8(value); |
| } |
| |
| public short getValue() { |
| return f(raw); |
| } |
| |
| public byte getRaw() { |
| return raw; |
| } |
| |
| @Override |
| public String toString() { |
| return "" + f(raw); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + raw; |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| U8 other = (U8) obj; |
| if (raw != other.raw) |
| return false; |
| return true; |
| } |
| |
| |
| @Override |
| public void writeTo(ChannelBuffer bb) { |
| bb.writeByte(raw); |
| } |
| |
| public static short f(final byte i) { |
| return (short) (i & 0xff); |
| } |
| |
| public static byte t(final short l) { |
| return (byte) l; |
| } |
| |
| |
| public final static Reader READER = new Reader(); |
| |
| private static class Reader implements OFMessageReader<U8> { |
| @Override |
| public U8 readFrom(ChannelBuffer bb) throws OFParseError { |
| return new U8(bb.readByte()); |
| } |
| } |
| |
| @Override |
| public int getLength() { |
| return 1; |
| } |
| |
| @Override |
| public U8 applyMask(U8 mask) { |
| return ofRaw( (byte) (raw & mask.raw)); |
| } |
| |
| @Override |
| public int compareTo(U8 o) { |
| return UnsignedBytes.compare(raw, o.raw); |
| } |
| |
| @Override |
| public void putTo(PrimitiveSink sink) { |
| sink.putByte(raw); |
| } |
| } |