public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
var instance = MethodFactory.CreateInstance(destinationType);
var classDescription = serializationContext.GetClassDescription(destinationType, instance);
var source = value as IDictionary <string, object>;
if (source != null)
{
foreach (var kv in source)
{
IMemberWrapper wrapper;
if (classDescription.TryGetMember(kv.Key, out wrapper))
{
wrapper.SetValue(instance, kv.Value);
}
}
return(instance);
}
return(base.ConvertTo(context, culture, value, destinationType));
}
// Add the type to the list of creatable types
public void Register(Type type)
{
if (type.IsEnum || constructors.ContainsKey(type))
{
return;
}
var constructor = type.GetConstructors().FirstOrDefault(x => x.GetParameters().Length == 0);
if (constructor == null)
{
throw new ArgumentException($"{type.FullName} does not have any accessible parameterless constructors.", nameof(type));
}
constructors[type] = MethodFactory.CompileObjectConstructor(constructor);
var attributes = type.GetCustomAttributes <SerializedNameAttribute>(false).ToArray();
if (attributes.Length == 0)
{
remoteToLocalNames[type.FullName] = type;
}
else if (attributes.Count(x => x.Canonical) == 1)
{
foreach (var attribute in attributes)
{
RegisterAlias(type, attribute.SerializedName, attribute.Canonical);
}
}
else
{
throw new ArgumentException(
$"{type.FullName} has {attributes.Count(x => x.Canonical)} candidate names marked as canonical. only one can be canonical.",
nameof(type));
}
}
public static object ConvertTo(object value, Type targetType)
{
if (value == null)
{
return(CreateDefaultValue(targetType));
}
var sourceType = value.GetType();
if (sourceType == targetType || targetType.IsInstanceOfType(value))
{
return(value);
}
// IConvertible
if (sourceType.IsConvertible() && targetType.IsConvertible())
{
if (targetType.IsEnum)
{
var stringValue = value as string;
return(stringValue != null
? Enum.Parse(targetType, stringValue, true)
: Enum.ToObject(targetType, value));
}
return(ConvertObject(sourceType, targetType, value));
}
var ienumerable = value as IEnumerable;
// array
if (targetType.IsArray && ienumerable != null)
{
var sourceElementType = sourceType.GetElementType();
var destinationElementType = targetType.GetElementType();
var enumerable = ienumerable.Cast <object>();
if (!destinationElementType.IsAssignableFrom(sourceElementType))
{
enumerable = enumerable.Select(x => ConvertTo(x, destinationElementType));
}
var method = EnumerableToArrayCache.GetOrAdd(destinationElementType, type => EnumerableToArrayMethod.MakeGenericMethod(type));
return(method.Invoke(null, new object[] { enumerable }));
}
// IDictionary<K, V>
// - we always deserialize AMF dictionaries as Dictionary<string, object> (or an object that inherits from it)
var sourceGenericDictionary = value as IDictionary <string, object>;
var genericDictionaryType = TryGetInterfaceType(targetType, typeof(IDictionary <,>));
if (sourceGenericDictionary != null && genericDictionaryType != null)
{
var instance = MethodFactory.CreateInstance(targetType);
var adder = AdderMethodCache.GetOrAdd(genericDictionaryType, type => new AdderMethodInfo(type));
foreach (var pair in sourceGenericDictionary)
{
adder.Method.Invoke(instance, new[]
{
ConvertTo(pair.Key, adder.TypeGenericParameters[0]),
ConvertTo(pair.Value, adder.TypeGenericParameters[1])
});
}
return(instance);
}
// IDictionary
var souceDictionary = value as IDictionary;
if (typeof(IDictionary).IsAssignableFrom(targetType) && souceDictionary != null)
{
var instance = (IDictionary)MethodFactory.CreateInstance(targetType);
foreach (DictionaryEntry pair in souceDictionary)
{
instance.Add(pair.Key, pair.Value);
}
return(instance);
}
// IList<T>
var sourceListType = TryGetInterfaceType(targetType, typeof(IList <>));
if (sourceListType != null && ienumerable != null)
{
var instance = MethodFactory.CreateInstance(targetType);
var adder = AdderMethodCache.GetOrAdd(sourceListType, type => new AdderMethodInfo(type));
foreach (var item in ienumerable)
{
adder.Method.Invoke(instance, new object[] { ConvertTo(item, adder.TypeGenericParameters[0]) });
}
return(instance);
}
// IList
if (typeof(IList).IsAssignableFrom(targetType) && ienumerable != null)
{
var instance = (IList)MethodFactory.CreateInstance(targetType);
foreach (var item in ienumerable)
{
instance.Add(item);
}
return(instance);
}
// Guid
if (targetType == typeof(Guid))
{
var input = value as string;
if (input != null)
{
return(Guid.Parse(input));
}
var bytes = value as byte[];
if (bytes != null)
{
return(new Guid(bytes));
}
}
// Nullable<T>
if (targetType.IsNullable())
{
var underlyingType = Nullable.GetUnderlyingType(targetType);
return(Convert.ChangeType(value, underlyingType, CultureInfo.InvariantCulture));
}
return(ConvertObject(sourceType, targetType, value));
}
