private void Test(Random r, CtpTypeCode code)
{
var list = new List <CtpObject>();
for (int x = 0; x < 1000; x++)
{
list.Add(CreateRandom(r, code));
}
Test(list);
}
public static Type ToType(CtpTypeCode columnTypeCode)
{
switch (columnTypeCode)
{
case CtpTypeCode.Null:
return(typeof(DBNull));
case CtpTypeCode.Integer:
return(typeof(Int64));
case CtpTypeCode.Single:
return(typeof(Single));
case CtpTypeCode.Double:
return(typeof(Double));
case CtpTypeCode.Numeric:
return(typeof(CtpNumeric));
case CtpTypeCode.CtpTime:
return(typeof(CtpTime));
case CtpTypeCode.Boolean:
return(typeof(Boolean));
case CtpTypeCode.Guid:
return(typeof(Guid));
case CtpTypeCode.String:
return(typeof(String));
case CtpTypeCode.CtpBuffer:
return(typeof(byte[]));
case CtpTypeCode.CtpCommand:
return(typeof(byte[]));
default:
throw new ArgumentOutOfRangeException(nameof(columnTypeCode), columnTypeCode, null);
}
}
public static CtpObject CreateDefault(CtpTypeCode typeCode)
{
switch (typeCode)
{
case CtpTypeCode.Null:
return(CtpObject.Null);
case CtpTypeCode.Integer:
return(new CtpObject(0));
case CtpTypeCode.Single:
return(new CtpObject(0f));
case CtpTypeCode.Double:
return(new CtpObject(0d));
case CtpTypeCode.Numeric:
return(new CtpObject(default(CtpNumeric)));
case CtpTypeCode.CtpTime:
return(new CtpTime(0));
case CtpTypeCode.Boolean:
return(new CtpObject(false));
case CtpTypeCode.Guid:
return(new CtpObject(Guid.Empty));
case CtpTypeCode.String:
return(new CtpObject(string.Empty));
case CtpTypeCode.CtpBuffer:
return(new CtpObject(CtpBuffer.Empty));
case CtpTypeCode.CtpCommand:
throw new NotSupportedException();
default:
throw new ArgumentOutOfRangeException(nameof(typeCode), typeCode, null);
}
}
private void ThrowHelper(CtpTypeCode code)
{
throw new InvalidOperationException($"The internal value is {ValueTypeCode}, not {code}");
}
private CtpObject CreateRandom(Random r, CtpTypeCode typeCode)
{
byte[] buffer = new byte[8];
r.NextBytes(buffer);
switch (typeCode)
{
case CtpTypeCode.Null:
return(CtpObject.Null);
case CtpTypeCode.Integer:
switch (r.Next(100))
{
case 0: return(-1);
case 1: return(-2);
case 2: return(0);
case 3: return(1);
case 4: return(99);
case 5: return(100);
case 6: return(101);
case 7: return(sbyte.MaxValue);
case 8: return(sbyte.MinValue);
case 9: return(byte.MaxValue);
case 10: return(byte.MinValue);
case 11: return(short.MaxValue);
case 12: return(short.MinValue);
case 13: return(ushort.MaxValue);
case 14: return(ushort.MinValue);
case 15: return(int.MaxValue);
case 16: return(int.MinValue);
case 17: return(uint.MaxValue);
case 18: return(uint.MinValue);
case 19: return(long.MaxValue);
case 20: return(long.MinValue);
case 21: return(ulong.MaxValue);
case 22: return(ulong.MinValue);
default: return(BigEndian.ToInt64(buffer, 0) >> r.Next(64));
}
case CtpTypeCode.Single:
switch (r.Next(100))
{
case 0: return(-1f);
case 1: return(0f);
case 2: return(1f);
case 3: return(float.NaN);
case 4: return(float.MaxValue);
case 5: return(float.MinValue);
case 6: return(float.Epsilon);
case 7: return(float.PositiveInfinity);
case 8: return(float.NegativeInfinity);
default: return(BigEndian.ToSingle(buffer, 0));
}
case CtpTypeCode.Double:
switch (r.Next(100))
{
case 0: return(-1.0);
case 1: return(0.0);
case 2: return(1.0);
case 3: return(double.NaN);
case 4: return(double.MaxValue);
case 5: return(double.MinValue);
case 6: return(double.Epsilon);
case 7: return(double.PositiveInfinity);
case 8: return(double.NegativeInfinity);
default: return(BigEndian.ToDouble(buffer, 0));
}
case CtpTypeCode.Numeric:
switch (r.Next(100))
{
case 0: return(decimal.MinusOne);
case 1: return(decimal.Zero);
case 2: return(decimal.One);
case 3: return(decimal.MaxValue);
case 4: return(decimal.MinValue);
default:
{
uint high = BigEndian.ToUInt32(buffer, 0);
uint mid = BigEndian.ToUInt32(buffer, 2);
uint low = BigEndian.ToUInt32(buffer, 4);
int shift = r.Next(97);
if (shift >= 32)
{
high = 0;
shift = -32;
if (shift >= 32)
{
mid = 0;
shift = -32;
low >>= shift;
}
else
{
mid >>= shift;
}
}
else
{
high >>= shift;
}
return(new decimal((int)low, (int)mid, (int)high, r.Next(2) == 0, (byte)r.Next(29)));
}
}
case CtpTypeCode.CtpTime:
switch (r.Next(100))
{
case 0: return(CtpTime.MaxValue);
case 1: return(CtpTime.MinValue);
case 2: return(new CtpTime(0));
default: return(new CtpTime(DateTime.FromBinary(Math.Min(DateTime.MaxValue.Ticks, Math.Max(0, BigEndian.ToInt64(buffer, 0))))));
}
case CtpTypeCode.Boolean:
return((buffer[0] & 1) == 1);
case CtpTypeCode.Guid:
return((buffer[0] % 30 == 0) ? Guid.Empty : Guid.NewGuid());
case CtpTypeCode.String:
{
var bytes = (byte[])CreateRandom(r, CtpTypeCode.CtpBuffer);
return(Encoding.Unicode.GetString(bytes));
}
case CtpTypeCode.CtpBuffer:
{
var data = new byte[buffer[0]];
r.NextBytes(data);
return(CtpBuffer.DoNotClone(data));
}
case CtpTypeCode.CtpCommand:
return(new CtpError(CreateRandom(r, CtpTypeCode.String).AsString, CreateRandom(r, CtpTypeCode.String).AsString).ToCommand());
default:
throw new ArgumentOutOfRangeException(nameof(typeCode), typeCode, null);
}
}
public MetadataColumn(string name, CtpTypeCode typeCode)
{
TypeCode = typeCode;
Name = name;
}