public override Object Decode(DecodeBuffer input)
{
var v = input.ReadByte();
switch (v)
{
case Zero: return(false);
case One: return(true);
case Two: return(null);
default: throw new SchemaMismatchException($"Boolean value must be either {Zero}, {One} or {Two}, but {v} given.");
}
}
public static UInt64 Decode(DecodeBuffer input)
{
#if DEBUG
if (null == input)
{
throw new ArgumentNullException(nameof(input));
}
#endif
// Setup symbol
UInt64 symbol = 0;
var bit = 0;
Int32 b;
do
{
// Read byte
b = input.ReadByte();
// Add input bits to output
var chunk = (UInt64)(b & Mask);
var pre = symbol;
symbol += (chunk + 1) << bit;
#if DEBUG
// Check for overflow
if (symbol < pre)
{
throw new OverflowException($"Symbol is corrupt, or larger than maximum supported value {UnsignedVlq.MaxValue}.");
}
#endif
// Increment bit offset
bit += PacketSize;
} while ((b & More) > 0); // If not final byte
// Remove zero offset
symbol--;
// Add to output
return(symbol);
}