private static void ValidateRange(Type serializeType, IEnumerable <PropertyInfo> properties)
{
var bitsUsed = new HashSet <int>();
int maxBit = 0;
int minBit = int.MaxValue;
foreach (PropertyInfo prop in properties)
{
ValidateProperty(serializeType, prop);
PackedBitRangeAttribute bitRangeAttr = prop.GetCustomAttribute <PackedBitRangeAttribute>();
// Validation
if (bitRangeAttr.HasHighBit)
{
if (bitRangeAttr.LowBit <= 0 || bitRangeAttr.HighBit <= 0)
{
throw new ArgumentException($"Bits must be expressed as 1 or above ({prop.Name})", nameof(serializeType));
}
if (bitRangeAttr.HighBit < bitRangeAttr.LowBit)
{
throw new ArgumentException($"HighBit must be higher than LowBit ({prop.Name})", nameof(serializeType));
}
for (int i = bitRangeAttr.LowBit; i <= bitRangeAttr.HighBit; i++)
{
if (bitsUsed.Contains(i))
{
throw new ArgumentException($"Overlapping bit value in range ({prop.Name}): {i}", nameof(serializeType));
}
bitsUsed.Add(i);
}
maxBit = Math.Max(maxBit, bitRangeAttr.HighBit);
minBit = Math.Min(minBit, bitRangeAttr.LowBit);
}
else
{
int bitValue = bitRangeAttr.LowBit;
if (bitValue <= 0)
{
throw new ArgumentException($"Bits must be expressed as 1 or above ({prop.Name})", nameof(serializeType));
}
if (bitsUsed.Contains(bitValue))
{
throw new ArgumentException($"Overlapping bit value in range ({prop.Name}): {bitValue}", nameof(serializeType));
}
bitsUsed.Add(bitValue);
maxBit = Math.Max(maxBit, bitValue);
minBit = Math.Min(minBit, bitValue);
}
}
ValidateFullRange(serializeType, bitsUsed, minBit, maxBit);
}
/// <summary>
/// Serializes an object into a PackedBitWriter stream.
/// </summary>
/// <param name="writer">The stream to serialize to.</param>
/// <param name="value">The object to serialize.</param>
/// <exception cref="ArgumentNullException"><paramref name="writer" /> is null.</exception>
/// <exception cref="ArgumentNullException"><paramref name="value" /> is null.</exception>
public void Serialize(PackedBitWriter writer, object value)
{
if (object.ReferenceEquals(writer, null))
{
throw new ArgumentNullException(nameof(writer));
}
if (object.ReferenceEquals(value, null))
{
throw new ArgumentNullException(nameof(value));
}
if (ImplementsInterface)
{
((IPackedBitSerializable)value).Serialize(writer);
}
else
{
var properties = GetProperties(SerializeType);
if (HasOrder)
{
properties = properties.OrderBy(p => (p.GetCustomAttribute <PackedBitOrderAttribute>() ?? new PackedBitOrderAttribute(0)).LowBit);
WriteImperativeBits(writer, value, properties, (prop) => {
PackedBitOrderAttribute bitOrderAttr = prop.GetCustomAttribute <PackedBitOrderAttribute>();
return(new BitPair()
{
Count = bitOrderAttr.BitCount,
Signed = bitOrderAttr.Signed,
});
});
}
else if (HasRange)
{
properties = properties.OrderBy(p => (p.GetCustomAttribute <PackedBitRangeAttribute>() ?? new PackedBitRangeAttribute(0)).LowBit);
WriteImperativeBits(writer, value, properties, (prop) => {
PackedBitRangeAttribute bitRangeAttr = prop.GetCustomAttribute <PackedBitRangeAttribute>();
return(new BitPair()
{
Count = bitRangeAttr.HasHighBit ?
bitRangeAttr.HighBit - (bitRangeAttr.LowBit - 1) :
1,
Signed = bitRangeAttr.Signed,
});
});
}
else if (HasSize)
{
WriteImperativeBits(writer, value, properties, (prop) => {
PackedBitSizeAttribute bitSizeAttr = prop.GetCustomAttribute <PackedBitSizeAttribute>();
return(new BitPair()
{
Count = bitSizeAttr.BitCount,
Signed = bitSizeAttr.Signed,
});
});
}
else
{
throw CodePath.Unreachable;
}
}
}
/// <summary>
/// Deserializes a PackedBitReader stream to an object.
/// </summary>
/// <param name="reader">The stream to deserialize.</param>
/// <returns>An object populated by the stream.</returns>
/// <exception cref="ArgumentNullException"><paramref name="reader" /> is null.</exception>
public object Deserialize(PackedBitReader reader)
{
if (object.ReferenceEquals(reader, null))
{
throw new ArgumentNullException(nameof(reader));
}
object ret = Activator.CreateInstance(SerializeType);
if (ImplementsInterface)
{
((IPackedBitSerializable)ret).Deserialize(reader);
}
else
{
var properties = GetProperties(SerializeType);
if (HasOrder)
{
properties = properties.OrderBy(p => p.GetCustomAttribute <PackedBitOrderAttribute>().LowBit);
ReadImperativeBits(reader, ret, properties, (prop) => {
PackedBitOrderAttribute bitOrderAttr = prop.GetCustomAttribute <PackedBitOrderAttribute>();
return(new BitPair()
{
Count = bitOrderAttr.BitCount,
Signed = bitOrderAttr.Signed,
});
});
}
else if (HasRange)
{
properties = properties.OrderBy(p => p.GetCustomAttribute <PackedBitRangeAttribute>().LowBit);
ReadImperativeBits(reader, ret, properties, (prop) => {
PackedBitRangeAttribute bitRangeAttr = prop.GetCustomAttribute <PackedBitRangeAttribute>();
return(new BitPair()
{
Count = bitRangeAttr.HasHighBit ?
bitRangeAttr.HighBit - (bitRangeAttr.LowBit - 1) :
1,
Signed = bitRangeAttr.Signed,
});
});
}
else if (HasSize)
{
ReadImperativeBits(reader, ret, properties, (prop) => {
PackedBitSizeAttribute bitSizeAttr = prop.GetCustomAttribute <PackedBitSizeAttribute>();
return(new BitPair()
{
Count = bitSizeAttr.BitCount,
Signed = bitSizeAttr.Signed,
});
});
}
else
{
throw CodePath.Unreachable;
}
}
return(ret);
}