public void TestCalculate()
{
var value1 = _provider.Calculate(Bytes1);
var value2 = _provider.Calculate(Bytes2);
var value3 = _provider.Calculate(Bytes1);
Assert.AreNotEqual(value1, value2);
Assert.AreEqual(value1, value3);
}
public static Parser <T> WithChecksum <T>(this Parser <T> parser, IChecksum checksum)
{
if (parser == null)
{
throw new ArgumentNullException("parser");
}
return(i =>
{
var start = i.Position;
var a = parser(i);
var end = a.Remainder.Position;
return a.IfSuccess(
b =>
{
return Parse.Bytes(checksum.Length)(a.Remainder)
.IfSuccess(
c =>
{
var expected = checksum.Calculate(a.Remainder.Source.Skip(start).Take(end - start).ToArray());
var actual = c.Value.ToArray();
return expected.SequenceEqual(actual)
? Result.Success(b.Value, c.Remainder)
: Result.Failure <T>(b.Remainder, "invalid checksum", new[] { string.Format("expected checksum {0} but was {1}", BitConverter.ToString(expected), BitConverter.ToString(actual)) });
}
);
});
});
}
internal bool Write(BlazeCommand command, params byte[] data)
{
ByteList byteList = new ByteList();
ushort length = 0;
if (data != null)
{
length = (ushort)data.Length;
}
// Add a '$' sync character
byteList.Add(36);
byteList.Add((byte)command);
byteList.AddUInt16(length);
if (length > 0)
{
byteList.AddRange(data);
}
ushort csum = 0;
if (_checksum != null)
{
// Don't count the
csum = _checksum.Calculate(byteList, 0, byteList.Count);
}
byteList.Add((byte)(csum >> 8));
byteList.Add((byte)csum);
byteList.TrimExcess();
_replyReceived.Reset();
_startTime = Environment.TickCount;
if (_dataBuffer != null)
{
_dataBuffer.Clear();
}
_provider.Write(byteList);
bool flag = _replyReceived.WaitOne(_provider.Timeout);
_endTime = Environment.TickCount;
return(flag);
}