private static src.XPos makePos(ref src.PosBase @base, ulong line, ulong col)
{
return Ctxt.PosTable.XPos(src.MakePos(base, line, col));
}
public static ref Slice NewSlice(ref src.PosBase @base, long line, slice <Token> tokens)
{
return(ref new Slice(tokens: tokens, base : base, line: line, pos: -1, ));
}