protected virtual bool LookupConstructionRequiresArguments()
{
if (UnderlyingType == null)
{
return(false);
}
// not sure if it is required, but MemberDefinition return true while they are abstract and it makes no sense.
if (UnderlyingType.IsAbstract)
{
return(true);
}
// FIXME: probably some primitive types are treated as special.
switch (Type.GetTypeCode(UnderlyingType))
{
case TypeCode.String:
return(true);
case TypeCode.Object:
if (UnderlyingType == typeof(TimeSpan))
{
return(false);
}
break;
default:
return(false);
}
return(UnderlyingType.GetConstructor(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance, null, Type.EmptyTypes, null) == null);
}
private ConstructorInfo?GetConstructor()
{
if (UnderlyingType.IsValueType)
{
return(null);
}
ConstructorInfo?ctor = UnderlyingType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public, Type.EmptyTypes);
if (ctor == null)
{
throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidDataContractException(SR.Format(SR.IXmlSerializableMustHaveDefaultConstructor, DataContract.GetClrTypeFullName(UnderlyingType))));
}
return(ctor);
}