/// <summary>
/// reads a type from a json node
/// </summary>
/// <param name="type">type to read</param>
/// <param name="node">json node</param>
/// <param name="variant"></param>
/// <returns>instance with data from json node</returns>
object Read(Type type, JsonNode node, bool variant)
{
if (node is JsonValue && ((JsonValue)node).Value == null)
{
return(null);
}
if (type == typeof(object))
{
if (!(node is JsonValue))
{
throw new JsonException("Currently only values are supported for object properties");
}
return(((JsonValue)node).Value);
}
if (type.IsArray)
{
if (type.GetElementType() == typeof(byte))
{
if (!(node is JsonValue))
{
throw new JsonException("Unable to read value from non value node");
}
string base64value = ((JsonValue)node).Value as string;
if (base64value == null)
{
return(null);
}
return(Convert.FromBase64String(base64value));
}
if (!(node is JsonArray))
{
throw new JsonException("Unable to read array from non array json node");
}
return(ReadArray(type.GetElementType(), (JsonArray)node, variant));
}
#if WINDOWS_UWP
if (type.GetTypeInfo().IsValueType || type.GetTypeInfo().IsEnum || type == typeof(string) || type == typeof(Version))
{
#else
if (type.IsValueType || type.IsEnum || type == typeof(string) || type == typeof(Version) || type == typeof(IntPtr) || type == typeof(UIntPtr))
{
#endif
if (!(node is JsonValue))
{
throw new JsonException("Unable to read value from non value node");
}
return(Converter.Convert(((JsonValue)node).Value, type));
}
if (type == typeof(Type))
{
return(Type.GetType(node.SelectValue <string>()));
}
// check for variant types
if (variant)
{
Type customtype = node.SelectValue <Type>("type");
return(Read(customtype, node.SelectNode("data")));
}
if (serializers.Contains(type))
{
return(serializers.Get(type).Deserialize(node));
}
if (!(node is JsonObject))
{
throw new JsonException("Unable to read object from non object node");
}
JsonObject @object = (JsonObject)node;
#if WINDOWS_UWP
object instance = Activator.CreateInstance(type);
#else
object instance = Activator.CreateInstance(type, true);
#endif
foreach (PropertyInfo property in type.GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
if (!property.CanWrite)
{
continue;
}
string key = JsonKeyAttribute.GetKey(property) ?? property.Name.ToLower();
if ([email protected](key))
{
continue;
}
string loader = JsonLoaderAttribute.Get(property);
object value;
if (loader != null)
{
MethodInfo method = type.GetMethod(loader, BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
value = method.Invoke(null, new object[] { @object.SelectValue <string>(key) });
}
else
{
value = Read(property.PropertyType, @object.GetNode(key), VariantAttribute.IsVariant(property));
}
try {
property.SetValue(instance, Converter.Convert(value, property.PropertyType), null);
}
catch (Exception e) {
// TODO: log this shit
}
}
return(instance);
}
object ReadArray(Type elementtype, JsonArray node, bool variant)
{
Array instance = Array.CreateInstance(elementtype, node.Count);
for (int i = 0; i < node.Count; ++i)
{
instance.SetValue(Read(elementtype, node.GetNode(i), variant), i);
}
return(instance);
}
/// <summary>
/// writes an object to a json structure
/// </summary>
/// <param name="object"></param>
/// <param name="variant"></param>
/// <returns></returns>
JsonNode Write(object @object, bool variant)
{
if (@object is Array)
{
if (@object.GetType().GetElementType() == typeof(byte))
{
return(new JsonValue(Convert.ToBase64String((byte[])@object)));
}
return(WriteArray((Array)@object, variant));
}
if (@object is IDictionary)
{
JsonObject dictionary = new JsonObject();
foreach (object kvp in ((IDictionary)@object).Keys)
{
dictionary[kvp.ToString()] = Write(((IDictionary)@object)[kvp]);
}
return(dictionary);
}
#if WINDOWS_UWP
if (@object == null || @object is string || @object.GetType().GetTypeInfo().IsEnum || @object.GetType().GetTypeInfo().IsValueType || @object is Version)
#else
if (@object == null || @object is string || @object.GetType().IsEnum || @object.GetType().IsValueType || @object is Version || @object is IntPtr || @object is UIntPtr)
#endif
{ return(new JsonValue(@object)); }
if (@object is Type type)
{
return(new JsonValue(type.AssemblyQualifiedName));
}
// check for variant types
if (variant)
{
JsonObject jsonobject = new JsonObject {
["type"] = Write(@object.GetType()),
["data"] = Write(@object)
};
return(jsonobject);
}
if (serializers.Contains(@object.GetType()))
{
return(serializers.Get(@object.GetType()).Serialize(@object));
}
JsonObject json = new JsonObject();
foreach (PropertyInfo property in @object.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
// currently not sure ... perhaps optional deactivation
//if(!property.CanWrite)
// continue;
// ignore indexers
if (property.GetIndexParameters().Length > 0)
{
continue;
}
string key = JsonKeyAttribute.GetKey(property) ?? property.Name.ToLower();
json[key] = Write(
#if FRAMEWORK35
property.GetValue(@object, null),
#else
property.GetValue(@object),
#endif
VariantAttribute.IsVariant(property));
}
return(json);
}