Example #1
0
        private static bool ConvertDictionaryToObject(IDictionary <string, object> dictionary, Type type, JavaScriptSerializer serializer, bool throwOnError, out object convertedObject)
        {
            object obj2;
            Type   t  = type;
            string id = null;
            object o  = dictionary;

            if (dictionary.TryGetValue("__type", out obj2))
            {
                if (!ConvertObjectToTypeMain(obj2, typeof(string), serializer, throwOnError, out obj2))
                {
                    convertedObject = false;
                    return(false);
                }
                id = (string)obj2;
                if (id != null)
                {
                    if (serializer.TypeResolver != null)
                    {
                        t = serializer.TypeResolver.ResolveType(id);
                        if (t == null)
                        {
                            if (throwOnError)
                            {
                                throw new InvalidOperationException();
                            }
                            convertedObject = null;
                            return(false);
                        }
                    }
                    dictionary.Remove("__type");
                }
            }
            JavaScriptConverter converter = null;

            if ((t != null) && serializer.ConverterExistsForType(t, out converter))
            {
                try
                {
                    convertedObject = converter.Deserialize(dictionary, t, serializer);
                    return(true);
                }
                catch
                {
                    if (throwOnError)
                    {
                        throw;
                    }
                    convertedObject = null;
                    return(false);
                }
            }
            if ((id != null) || IsClientInstantiatableType(t, serializer))
            {
                o = Activator.CreateInstance(t);
            }
            List <string> list = new List <string>(dictionary.Keys);

            if (IsGenericDictionary(type))
            {
                Type type3 = type.GetGenericArguments()[0];
                if ((type3 != typeof(string)) && (type3 != typeof(object)))
                {
                    if (throwOnError)
                    {
                        throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, AtlasWeb.JSON_DictionaryTypeNotSupported, new object[] { type.FullName }));
                    }
                    convertedObject = null;
                    return(false);
                }
                Type        type4       = type.GetGenericArguments()[1];
                IDictionary dictionary2 = null;
                if (IsClientInstantiatableType(type, serializer))
                {
                    dictionary2 = (IDictionary)Activator.CreateInstance(type);
                }
                else
                {
                    dictionary2 = (IDictionary)Activator.CreateInstance(_dictionaryGenericType.MakeGenericType(new Type[] { type3, type4 }));
                }
                if (dictionary2 != null)
                {
                    foreach (string str2 in list)
                    {
                        object obj4;
                        if (!ConvertObjectToTypeMain(dictionary[str2], type4, serializer, throwOnError, out obj4))
                        {
                            convertedObject = null;
                            return(false);
                        }
                        dictionary2[str2] = obj4;
                    }
                    convertedObject = dictionary2;
                    return(true);
                }
            }
            if ((type != null) && !type.IsAssignableFrom(o.GetType()))
            {
                if (!throwOnError)
                {
                    convertedObject = null;
                    return(false);
                }
                if (type.GetConstructor(BindingFlags.Public | BindingFlags.Instance, null, s_emptyTypeArray, null) == null)
                {
                    throw new MissingMethodException(string.Format(CultureInfo.InvariantCulture, AtlasWeb.JSON_NoConstructor, new object[] { type.FullName }));
                }
                throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, AtlasWeb.JSON_DeserializerTypeMismatch, new object[] { type.FullName }));
            }
            foreach (string str3 in list)
            {
                object propertyValue = dictionary[str3];
                if (!AssignToPropertyOrField(propertyValue, o, str3, serializer, throwOnError))
                {
                    convertedObject = null;
                    return(false);
                }
            }
            convertedObject = o;
            return(true);
        }
Example #2
0
        internal object ConvertToType(Type type, object obj)
        {
            if (obj == null)
            {
                return(null);
            }

            if (obj is IDictionary <string, object> )
            {
                if (type == null)
                {
                    obj = EvaluateDictionary((IDictionary <string, object>)obj);
                }
                else
                {
                    JavaScriptConverter converter = GetConverter(type);
                    if (converter != null)
                    {
                        return(converter.Deserialize(
                                   EvaluateDictionary((IDictionary <string, object>)obj),
                                   type, this));
                    }
                }

                return(ConvertToObject((IDictionary <string, object>)obj, type));
            }
            if (obj is ArrayList)
            {
                return(ConvertToList((ArrayList)obj, type));
            }

            if (type == null)
            {
                return(obj);
            }

            Type sourceType = obj.GetType();

            if (type.IsAssignableFrom(sourceType))
            {
                return(obj);
            }

            if (type.IsEnum)
            {
                if (obj is string)
                {
                    return(Enum.Parse(type, (string)obj, true));
                }
                else
                {
                    return(Enum.ToObject(type, obj));
                }
            }

            TypeConverter c = TypeDescriptor.GetConverter(type);

            if (c.CanConvertFrom(sourceType))
            {
                if (obj is string)
                {
                    return(c.ConvertFromInvariantString((string)obj));
                }

                return(c.ConvertFrom(obj));
            }

            /*
             * Take care of the special case whereas in JSON an empty string ("") really means
             * an empty value
             * (see: https://bugzilla.novell.com/show_bug.cgi?id=328836)
             */
            if ((type.IsGenericType) && (type.GetGenericTypeDefinition() == typeof(Nullable <>)))
            {
                string s = obj as String;
                if (String.IsNullOrEmpty(s))
                {
                    return(null);
                }
            }

            return(Convert.ChangeType(obj, type));
        }
Example #3
0
        // Method that converts an IDictionary<string, object> to an object of the right type
        private static bool ConvertDictionaryToObject(IDictionary <string, object> dictionary, Type type, JavaScriptSerializer 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(JavaScriptSerializer.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(JavaScriptSerializer.ServerTypeFieldName);
                }
            }

            JavaScriptConverter 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);
            }

#if INDIGO
            StructuralContract contract = null;
            if (suggestedType != null &&
                suggestedType.GetCustomAttributes(typeof(DataContractAttribute), false).Length > 0)
            {
                contract = StructuralContract.Create(suggestedType);
            }
#endif

            // 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));
            }

            foreach (string memberName in memberNames)
            {
                object propertyValue = dictionary[memberName];
#if INDIGO
                if (contract != null)
                {
                    Member member = contract.FindMember(memberName);
                    //

                    if (member == null)
                    {
                        throw new InvalidOperationException();
                    }

                    if (member.MemberType == MemberTypes.Field)
                    {
                        member.SetValue(o, propertyValue);
                    }
                    else
                    {
                        member.SetValue(o, propertyValue);
                    }

                    continue;
                }
#endif
                // Assign the value into a property or field of the object
                if (!AssignToPropertyOrField(propertyValue, o, memberName, serializer, throwOnError))
                {
                    convertedObject = null;
                    return(false);
                }
            }

            convertedObject = o;
            return(true);
        }