public override object Read(DataInput @in)
{
long code = @in.ReadVInt64();
if ((code & 1) == 0)
{
// single long
long v = code.TripleShift(1);
if (v == 0)
{
return(NO_OUTPUT);
}
else
{
return(Int64.GetInstance(v));
}
}
else
{
// two longs
long first = code.TripleShift(1);
long second = @in.ReadVInt64();
return(new TwoInt64s(first, second));
}
}
public override object Subtract(object output, object inc)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(Valid(output, false));
Debugging.Assert(Valid(inc, false));
}
Int64 output2 = (Int64)output;
Int64 inc2 = (Int64)inc;
if (Debugging.AssertsEnabled)
{
Debugging.Assert(output2 >= inc2);
}
if (inc2 == NO_OUTPUT)
{
return(output2);
}
else if (output2.Equals(inc2))
{
return(NO_OUTPUT);
}
else
{
return(Int64.GetInstance(output2 - inc2));
}
}
public override object Add(object prefix, object output)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(Valid(prefix, false));
}
if (Debugging.AssertsEnabled)
{
Debugging.Assert(Valid(output, true));
}
Int64 prefix2 = (Int64)prefix;
if (output is Int64 output2)
{
if (prefix2 == NO_OUTPUT)
{
return(output2);
}
else if (output2 == NO_OUTPUT)
{
return(prefix2);
}
else
{
return(Int64.GetInstance(prefix2 + output2));
}
}
else
{
TwoInt64s output3 = (TwoInt64s)output;
long v = prefix2;
return(new TwoInt64s(output3.First + v, output3.Second + v));
}
}
public override object Common(object output1, object output2)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(Valid(output1, false));
Debugging.Assert(Valid(output2, false));
}
Int64 output1_ = (Int64)output1;
Int64 output2_ = (Int64)output2;
if (output1_ == NO_OUTPUT || output2_ == NO_OUTPUT)
{
return(NO_OUTPUT);
}
else if (doShare)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(output1_ > 0);
Debugging.Assert(output2_ > 0);
}
return(Int64.GetInstance(Math.Min(output1_, output2_)));
}
else if (output1_.Equals(output2_))
{
return(output1_);
}
else
{
return(NO_OUTPUT);
}
}