private static bool DoesTypesHaveTheSameNumberOfFields(Type type1,
Type type2)
{
var fieldsType2 = InternalSerializationStuff.GetFields(type2);
var fieldsType1 = InternalSerializationStuff.GetFields(type1);
return(fieldsType1.Length == fieldsType2.Length);
}
private void ComputeSerializationHashCode()
{
if (Type != null)
{
var fields = InternalSerializationStuff.GetFields(Type)
.OrderBy(f => f.Name,
StringComparer.Ordinal)
.Select(x => x.Name + x.FieldType.AssemblyQualifiedName);
string stringToHash = String.Format("{0}{1}",
Type.AssemblyQualifiedName,
String.Join(",",
fields));
unchecked
{
HashCode = 23;
foreach (char c in stringToHash)
{
HashCode = (HashCode * 31) + c;
}
}
}
}
/// <summary>
/// Throws an exception if the type is not supported for serialization or cloning
/// </summary>
/// <param name="type">Type to analyze</param>
public static void ValidateSupportedTypes(Type type)
{
if (typeof(Expression).IsAssignableFrom(type))
{
throw new NotSupportedException(type.ToString());
}
if (typeof(Delegate).IsAssignableFrom(type))
{
throw new NotSupportedException(type.ToString());
}
if (type.IsPointer)
{
throw new NotSupportedException($"Pointer types such as {type} are not suported");
}
if (InternalSerializationStuff.GetFields(type).Any(x => x.FieldType.IsPointer))
{
throw new NotSupportedException($"Type {type} cannot contains fields that are pointers.");
}
if (type == typeof(IQueryable))
{
throw new NotSupportedException(type.ToString());
}
if (type == typeof(IEnumerable))
{
throw new NotSupportedException(type.ToString());
}
var enumerableType = IQueryableCloner.GetInterfaceType(type, typeof(IEnumerable <>));
if (enumerableType != null)
{
var genericArgument = enumerableType.GetGenericArguments()[0];
if (genericArgument.IsGenericType &&
genericArgument.GetGenericTypeDefinition() == typeof(IGrouping <,>))
{
throw new NotSupportedException(type.ToString());
}
}
if (Attribute.IsDefined(type, typeof(CompilerGeneratedAttribute), false) &&
type.IsGenericType && type.Name.Contains("AnonymousType") &&
(type.Name.StartsWith("<>", StringComparison.OrdinalIgnoreCase)
||
type.Name.StartsWith("VB$", StringComparison.OrdinalIgnoreCase)) &&
(type.Attributes & TypeAttributes.NotPublic) == TypeAttributes.NotPublic)
{
throw new NotSupportedException(type.ToString());
}
if (!type.IsArray &&
type.Namespace != null &&
(type.Namespace.StartsWith("System.") || type.Namespace.StartsWith("Microsoft.")) &&
type.GetCustomAttribute <SerializableAttribute>() == null &&
type != typeof(ExpandoObject) &&
type != typeof(BigInteger))
{
throw new NotSupportedException(type.ToString());
}
}
