private void SerializeValue(object o, StringBuilder sb, int depth, Hashtable objectsInUse, PropertyMapper propertyMapper = null)
{
if (++depth > this._recursionLimit)
{
throw new ArgumentException(AtlasWeb.JSON_DepthLimitExceeded);
}
// Check whether a custom converter is available for this type.
JConverter converter = null;
if (o != null && this.ConverterExistsForType(o.GetType(), out converter))
{
var dict = converter.Serialize(o, this);
if (this.TypeResolver != null)
{
var typeString = TypeResolver.ResolveTypeId(o.GetType());
if (typeString != null)
{
dict[ServerTypeFieldName] = typeString;
}
}
sb.Append(Serialize(dict));
return;
}
this.SerializeValueInternal(o, sb, depth, objectsInUse, propertyMapper);
}
internal bool ConverterExistsForType(Type t, out JConverter converter)
{
if (this._converters == null)
{
converter = null;
return(false);
}
converter = this._converters.FirstOrDefault(c => c.IsSupported(t));
return(converter != null);
}
// Is this a type for which we want to instantiate based on the client stub
internal static bool IsClientInstantiatableType(Type t, JSerializer serializer)
{
// Abstract classes and interfaces can't be instantiated
//
if (t == null || t.IsAbstract || t.IsInterface || t.IsArray)
{
return(false);
}
// Even though 'object' is instantiatable, it is never useful to do this
if (t == typeof(object))
{
return(false);
}
// Return true if a converter is registered for the given type, so the converter
// can generate code on the client to instantiate it.
JConverter converter = null;
if (serializer.ConverterExistsForType(t, out converter))
{
return(true);
}
// Value types are okay (i.e. structs);
if (t.IsValueType)
{
return(true);
}
// Ignore types that don't have a public default ctor
ConstructorInfo constructorInfo = t.GetConstructor(BindingFlags.Public | BindingFlags.Instance,
null, s_emptyTypeArray, null);
if (constructorInfo == null)
{
return(false);
}
return(true);
}
// Method that converts an IDictionary<string, object> to an object of the right type
private static bool ConvertDictionaryToObject(IDictionary <string, object> dictionary, Type type, JSerializer serializer, bool throwOnError, out object convertedObject)
{
// The target type to instantiate.
Type targetType = type;
object s;
string serverTypeName = null;
object o = dictionary;
// Check if __serverType exists in the dictionary, use it as the type.
if (dictionary.TryGetValue(JSerializer.ServerTypeFieldName, out s))
{
// Convert the __serverType value to a string.
if (!ConvertObjectToTypeMain(s, typeof(String), serializer, throwOnError, out s))
{
convertedObject = false;
return(false);
}
serverTypeName = (string)s;
if (serverTypeName != null)
{
// If we don't have the JavaScriptTypeResolver, we can't use it
if (serializer.TypeResolver != null)
{
// Get the actual type from the resolver.
targetType = serializer.TypeResolver.ResolveType(serverTypeName);
// In theory, we should always find the type. If not, it may be some kind of attack.
if (targetType == null)
{
if (throwOnError)
{
throw new InvalidOperationException();
}
convertedObject = null;
return(false);
}
}
// Remove the serverType from the dictionary, even if the resolver was null
dictionary.Remove(JSerializer.ServerTypeFieldName);
}
}
JConverter converter = null;
if (targetType != null && serializer.ConverterExistsForType(targetType, out converter))
{
try
{
convertedObject = converter.Deserialize(dictionary, targetType, serializer);
return(true);
}
catch
{
if (throwOnError)
{
throw;
}
convertedObject = null;
return(false);
}
}
// Instantiate the type if it's coming from the __serverType argument.
if (serverTypeName != null || IsClientInstantiatableType(targetType, serializer))
{
// First instantiate the object based on the type.
o = Activator.CreateInstance(targetType);
}
// Use a different collection to avoid modifying the original during keys enumeration.
List <String> memberNames = new List <String>(dictionary.Keys);
// Try to handle the IDictionary<K, V> case
if (IsGenericDictionary(type))
{
Type keyType = type.GetGenericArguments()[0];
if (keyType != typeof(string) && keyType != typeof(object))
{
if (throwOnError)
{
throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.JSON_DictionaryTypeNotSupported, type.FullName));
}
convertedObject = null;
return(false);
}
Type valueType = type.GetGenericArguments()[1];
IDictionary dict = null;
if (IsClientInstantiatableType(type, serializer))
{
dict = (IDictionary)Activator.CreateInstance(type);
}
else
{
// Get the strongly typed Dictionary<K, V>
Type t = _dictionaryGenericType.MakeGenericType(keyType, valueType);
dict = (IDictionary)Activator.CreateInstance(t);
}
if (dict != null)
{
foreach (string memberName in memberNames)
{
object memberObject;
if (!ConvertObjectToTypeMain(dictionary[memberName], valueType, serializer, throwOnError, out memberObject))
{
convertedObject = null;
return(false);
}
dict[memberName] = memberObject;
}
convertedObject = dict;
return(true);
}
}
// Fail if we know we cannot possibly return the required type.
if (type != null && !type.IsAssignableFrom(o.GetType()))
{
if (!throwOnError)
{
convertedObject = null;
return(false);
}
ConstructorInfo constructorInfo = type.GetConstructor(BindingFlags.Public | BindingFlags.Instance, null, s_emptyTypeArray, null);
if (constructorInfo == null)
{
throw new MissingMethodException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.JSON_NoConstructor, type.FullName));
}
throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, AtlasWeb.JSON_DeserializerTypeMismatch, type.FullName));
}
var typeMapper = TypeMapper.Create(o.GetType());
foreach (string memberName in memberNames)
{
object propertyValue = dictionary[memberName];
// Assign the value into a property or field of the object
if (!AssignToProperty(typeMapper, propertyValue, o, memberName, serializer, throwOnError))
{
convertedObject = null;
return(false);
}
}
convertedObject = o;
return(true);
}
