public static TermAtom Read(BinaryReader reader, EEncodingType encType, ETermSize size)
{
var enc = Enc.Enc.Get(encType);
var len = size switch
{
ETermSize.Small => reader.ReadByte(),
ETermSize.Large => reader.ReadUInt16(),
_ => throw new NotSupportedException(),
};
var atomBytes = reader.ReadBytes(len);
var atom = enc.GetString(atomBytes);
return(new TermAtom()
{
EncodingType = encType,
Atom = atom
});
}
public static TermTuple Read(EndianBinaryReader reader, ETermSize size)
{
var len = size switch
{
ETermSize.Small => reader.ReadByte(),
ETermSize.Large => reader.ReadUInt32(),
_ => throw new NotSupportedException(),
};
var elements = new IExtTerm[len];
for (long i = 0; i < elements.LongLength; i++)
{
elements[i] = BeamTerm.BinaryToTerm(reader, false);
}
return(new TermTuple()
{
Elements = elements,
});
}
public static TermBigNumber Read(EndianBinaryReader reader, ETermSize size)
{
var len = size switch
{
ETermSize.Large => reader.ReadUInt32(),
ETermSize.Small => reader.ReadByte(),
_ => throw new ArgumentOutOfRangeException(nameof(size), size, null)
};
var sign = reader.ReadByte();
var valBytes = reader.ReadBytes((int)len);
var val = new BigInteger(valBytes, true, true);
if (sign == NegativeMark)
{
val *= -1;
}
return(new TermBigNumber()
{
Number = val,
AddOneByte = valBytes.Length >= 2 && valBytes[0] == 0
});
}
