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package org.apache.qpid.amqp_1_0.codec;
final class BinaryString
{
private byte[] _data;
private int _offset;
private int _size;
private int _hashCode;
BinaryString(final byte[] data, final int offset, final int size)
{
setData(data, offset, size);
}
BinaryString()
{
}
void setData(byte[] data, int offset, int size)
{
_data = data;
_offset = offset;
_size = size;
int hc = 0;
for (int i = 0; i < size; i++)
{
hc = 31*hc + (0xFF & data[offset + i]);
}
_hashCode = hc;
}
public final int hashCode()
{
return _hashCode;
}
public final boolean equals(Object o)
{
BinaryString buf = (BinaryString) o;
final int size = _size;
if (size != buf._size)
{
return false;
}
final byte[] myData = _data;
final byte[] theirData = buf._data;
int myOffset = _offset;
int theirOffset = buf._offset;
final int myLimit = myOffset + size;
while(myOffset < myLimit)
{
if (myData[myOffset++] != theirData[theirOffset++])
{
return false;
}
}
return true;
}
}
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