| /* |
| * |
| * 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.proton.codec; |
| |
| import org.apache.qpid.proton.amqp.UnsignedInteger; |
| |
| import java.util.Arrays; |
| import java.util.Collection; |
| |
| public class UnsignedIntegerType extends AbstractPrimitiveType<UnsignedInteger> |
| { |
| public static interface UnsignedIntegerEncoding extends PrimitiveTypeEncoding<UnsignedInteger> |
| { |
| |
| } |
| |
| private UnsignedIntegerEncoding _unsignedIntegerEncoding; |
| private UnsignedIntegerEncoding _smallUnsignedIntegerEncoding; |
| private UnsignedIntegerEncoding _zeroUnsignedIntegerEncoding; |
| |
| |
| UnsignedIntegerType(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| _unsignedIntegerEncoding = new AllUnsignedIntegerEncoding(encoder, decoder); |
| _smallUnsignedIntegerEncoding = new SmallUnsignedIntegerEncoding(encoder, decoder); |
| _zeroUnsignedIntegerEncoding = new ZeroUnsignedIntegerEncoding(encoder, decoder); |
| encoder.register(UnsignedInteger.class, this); |
| decoder.register(this); |
| } |
| |
| public Class<UnsignedInteger> getTypeClass() |
| { |
| return UnsignedInteger.class; |
| } |
| |
| public UnsignedIntegerEncoding getEncoding(final UnsignedInteger val) |
| { |
| int i = val.intValue(); |
| return i == 0 |
| ? _zeroUnsignedIntegerEncoding |
| : (i >= 0 && i <= 255) ? _smallUnsignedIntegerEncoding : _unsignedIntegerEncoding; |
| } |
| |
| public void fastWrite(EncoderImpl encoder, UnsignedInteger value) |
| { |
| int intValue = value.intValue(); |
| if (intValue == 0) |
| { |
| encoder.writeRaw(EncodingCodes.UINT0); |
| } |
| else if (intValue > 0 && intValue <= 255) |
| { |
| encoder.writeRaw(EncodingCodes.SMALLUINT); |
| encoder.writeRaw((byte)intValue); |
| } |
| else |
| { |
| encoder.writeRaw(EncodingCodes.UINT); |
| encoder.writeRaw(intValue); |
| } |
| } |
| |
| public UnsignedIntegerEncoding getCanonicalEncoding() |
| { |
| return _unsignedIntegerEncoding; |
| } |
| |
| public Collection<UnsignedIntegerEncoding> getAllEncodings() |
| { |
| return Arrays.asList(_unsignedIntegerEncoding, _smallUnsignedIntegerEncoding, _zeroUnsignedIntegerEncoding); |
| } |
| |
| |
| private class AllUnsignedIntegerEncoding |
| extends FixedSizePrimitiveTypeEncoding<UnsignedInteger> |
| implements UnsignedIntegerEncoding |
| { |
| |
| public AllUnsignedIntegerEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 4; |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.UINT; |
| } |
| |
| public UnsignedIntegerType getType() |
| { |
| return UnsignedIntegerType.this; |
| } |
| |
| public void writeValue(final UnsignedInteger val) |
| { |
| getEncoder().writeRaw(val.intValue()); |
| } |
| |
| public void write(final int i) |
| { |
| writeConstructor(); |
| getEncoder().writeRaw(i); |
| |
| } |
| |
| public boolean encodesSuperset(final TypeEncoding<UnsignedInteger> encoding) |
| { |
| return (getType() == encoding.getType()); |
| } |
| |
| public UnsignedInteger readValue() |
| { |
| return UnsignedInteger.valueOf(getDecoder().readRawInt()); |
| } |
| } |
| |
| private class SmallUnsignedIntegerEncoding |
| extends FixedSizePrimitiveTypeEncoding<UnsignedInteger> |
| implements UnsignedIntegerEncoding |
| { |
| public SmallUnsignedIntegerEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.SMALLUINT; |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 1; |
| } |
| |
| |
| public UnsignedIntegerType getType() |
| { |
| return UnsignedIntegerType.this; |
| } |
| |
| public void writeValue(final UnsignedInteger val) |
| { |
| getEncoder().writeRaw((byte)val.intValue()); |
| } |
| |
| public boolean encodesSuperset(final TypeEncoding<UnsignedInteger> encoder) |
| { |
| return encoder == this || encoder instanceof ZeroUnsignedIntegerEncoding; |
| } |
| |
| public UnsignedInteger readValue() |
| { |
| return UnsignedInteger.valueOf(((int)getDecoder().readRawByte()) & 0xff); |
| } |
| } |
| |
| |
| private class ZeroUnsignedIntegerEncoding |
| extends FixedSizePrimitiveTypeEncoding<UnsignedInteger> |
| implements UnsignedIntegerEncoding |
| { |
| public ZeroUnsignedIntegerEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.UINT0; |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 0; |
| } |
| |
| |
| public UnsignedIntegerType getType() |
| { |
| return UnsignedIntegerType.this; |
| } |
| |
| public void writeValue(final UnsignedInteger val) |
| { |
| } |
| |
| public boolean encodesSuperset(final TypeEncoding<UnsignedInteger> encoder) |
| { |
| return encoder == this; |
| } |
| |
| public UnsignedInteger readValue() |
| { |
| return UnsignedInteger.ZERO; |
| } |
| } |
| } |