/// <summary>
/// Return the class associated with a specified type identifier, or null
/// if the identifier is not defined in the current POF context.
/// </summary>
/// <param name="ctx">The POF context</param>
/// <param name="nTypeId">The type identifier to lookup</param>
/// <returns>
/// </returns>
private Type GetTypeForTypeId(IPofContext ctx, int nTypeId)
{
try
{
return(ctx.GetType(nTypeId));
}
catch (ArgumentException)
{
return(null);
}
}
/// <summary>
/// Deserialize an enum instance from a POF stream by reading its
/// value using the specified <see cref="IPofReader"/> object.
/// </summary>
/// <param name="reader">
/// The <b>IPofReader</b> with which to read the object's state.
/// </param>
/// <returns>
/// The deserialized enum instance.
/// </returns>
/// <exception cref="IOException">
/// If an I/O error occurs.
/// </exception>
public object Deserialize(IPofReader reader)
{
IPofContext pofContext = reader.PofContext;
Type enumType = pofContext.GetType(reader.UserTypeId);
if (!enumType.IsEnum)
{
throw new ArgumentException(
"EnumPofSerializer can only be used to deserialize enum types.");
}
object enumValue = Enum.Parse(enumType, reader.ReadString(0));
reader.RegisterIdentity(enumValue);
reader.ReadRemainder();
return(enumValue);
}
/// <summary>
/// Determine the type associated with the given type identifier.
/// </summary>
/// <param name="typeId">
/// The Pof type identifier; includes Pof intrinsics, Pof compact
/// values, and user types.
/// </param>
/// <param name="ctx">
/// The <see cref="IPofContext"/>.
/// </param>
/// <returns>
/// The type associated with the specified type identifier or
/// <c>null</c> for types with no mapping.
/// </returns>
/// <exception cref="ArgumentException">
/// If the specified type is a user type that is unknown to this
/// <b>IPofContext</b>.
/// </exception>
public static Type GetType(int typeId, IPofContext ctx)
{
if (typeId >= 0)
{
return(ctx.GetType(typeId));
}
switch (typeId)
{
case PofConstants.T_INT16:
return(typeof(short));
case PofConstants.T_INT32:
case PofConstants.V_INT_NEG_1:
case PofConstants.V_INT_0:
case PofConstants.V_INT_1:
case PofConstants.V_INT_2:
case PofConstants.V_INT_3:
case PofConstants.V_INT_4:
case PofConstants.V_INT_5:
case PofConstants.V_INT_6:
case PofConstants.V_INT_7:
case PofConstants.V_INT_8:
case PofConstants.V_INT_9:
case PofConstants.V_INT_10:
case PofConstants.V_INT_11:
case PofConstants.V_INT_12:
case PofConstants.V_INT_13:
case PofConstants.V_INT_14:
case PofConstants.V_INT_15:
case PofConstants.V_INT_16:
case PofConstants.V_INT_17:
case PofConstants.V_INT_18:
case PofConstants.V_INT_19:
case PofConstants.V_INT_20:
case PofConstants.V_INT_21:
case PofConstants.V_INT_22:
return(typeof(int));
case PofConstants.T_INT64:
return(typeof(long));
case PofConstants.T_INT128:
throw new NotSupportedException("T_INT128 type is not supported.");
case PofConstants.T_FLOAT32:
return(typeof(float));
case PofConstants.T_FLOAT64:
return(typeof(double));
case PofConstants.T_FLOAT128:
throw new NotSupportedException("T_FLOAT128 type is not supported.");
case PofConstants.V_FP_POS_INFINITY:
return(typeof(double));
case PofConstants.V_FP_NEG_INFINITY:
return(typeof(double));
case PofConstants.V_FP_NAN:
return(typeof(double));
case PofConstants.T_DECIMAL32:
return(typeof(decimal));
case PofConstants.T_DECIMAL64:
throw new NotSupportedException("T_DECIMAL64 type is not supported.");
case PofConstants.T_DECIMAL128:
throw new NotSupportedException("T_DECIMAL128 type is not supported.");
case PofConstants.T_BOOLEAN:
case PofConstants.V_BOOLEAN_FALSE:
case PofConstants.V_BOOLEAN_TRUE:
return(typeof(bool));
case PofConstants.T_OCTET:
return(typeof(byte));
case PofConstants.T_OCTET_STRING:
return(typeof(Binary));
case PofConstants.T_CHAR:
return(typeof(char));
case PofConstants.T_CHAR_STRING:
case PofConstants.V_STRING_ZERO_LENGTH:
return(typeof(string));
case PofConstants.T_DATE:
return(typeof(DateTime));
case PofConstants.T_TIME:
return(typeof(RawTime));
case PofConstants.T_DATETIME:
return(typeof(DateTime));
case PofConstants.T_YEAR_MONTH_INTERVAL:
return(typeof(RawYearMonthInterval));
case PofConstants.T_TIME_INTERVAL:
case PofConstants.T_DAY_TIME_INTERVAL:
return(typeof(TimeSpan));
case PofConstants.T_COLLECTION:
case PofConstants.T_UNIFORM_COLLECTION:
case PofConstants.V_COLLECTION_EMPTY:
return(typeof(ICollection));
case PofConstants.T_MAP:
case PofConstants.T_UNIFORM_KEYS_MAP:
case PofConstants.T_UNIFORM_MAP:
return(typeof(IDictionary));
case PofConstants.T_SPARSE_ARRAY:
return(typeof(ILongArray));
case PofConstants.T_ARRAY:
return(typeof(object[]));
case PofConstants.T_UNIFORM_ARRAY:
case PofConstants.T_UNIFORM_SPARSE_ARRAY:
case PofConstants.V_REFERENCE_NULL:
// ambiguous - could be either an array or SparseArray
return(null);
case PofConstants.T_IDENTITY:
case PofConstants.T_REFERENCE:
throw new ArgumentException(typeId + " has no " +
"mapping to a class");
default:
throw new ArgumentException(typeId + " is an " +
"invalid type");
}
}