public void TestEndiannessReverse()
{
Assert.AreEqual(0xBBAA, Endianness.Reverse((ushort)0xAABB));
Assert.AreEqual(0xDDCCBBAA, Endianness.Reverse(0xAABBCCDD));
Assert.AreEqual(0x7766554433221100, Endianness.Reverse(0x0011223344556677));
}
protected object ReadPOD(bool optional)
{
var tl = new TypeLength(Source);
if (optional && tl.IsOptionalMarker)
{
return(null);
}
switch (tl.Type)
{
case SMLType.Boolean:
return(_reader.ReadByte() != 0);
case SMLType.OctetString:
return(_reader.ReadBytes(tl.Length));
case SMLType.Integer:
{
var raw = FillPow2(tl);
if (raw.Length == 1)
{
return((sbyte)raw[0]);
}
if (raw.Length == 2)
{
return(Endianness.Reverse(BitConverter.ToInt16(raw, 0)));
}
if (raw.Length == 4)
{
return(Endianness.Reverse(BitConverter.ToInt32(raw, 0)));
}
if (raw.Length == 8)
{
return(Endianness.Reverse(BitConverter.ToInt64(raw, 0)));
}
throw new InvalidDataException("Invalid integer, expected 1, 2, 4 or 8 bytes, got " + raw.Length);
}
case SMLType.Unsigned:
{
var raw = FillPow2(tl);
if (raw.Length == 1)
{
return(raw[0]);
}
if (raw.Length == 2)
{
return(Endianness.Reverse(BitConverter.ToUInt16(raw, 0)));
}
if (raw.Length == 4)
{
return(Endianness.Reverse(BitConverter.ToUInt32(raw, 0)));
}
if (raw.Length == 8)
{
return(Endianness.Reverse(BitConverter.ToUInt64(raw, 0)));
}
throw new InvalidDataException("Invalid unsigned, expected 1, 2, 4 or 8 bytes, got " + raw.Length);
}
case SMLType.List:
// we don't handle this directly, as in recursive
// we could, but it doesn't fit into the reflection/type model
throw new InvalidDataException("ReadPOD is only for POD types");
}
throw new InvalidDataException("Invalid TypeLength");
}
