public static int FieldOrder(JsonFieldAttribute f)
{
if (f != null)
{
return(f.Order);
}
return(0);
}
public static string FieldName(JsonFieldAttribute f, FieldInfo fi)
{
if (f != null && f.Name != null)
{
return(f.Name);
}
return(fi.Name);
}
private static IEnumerable <KeyValuePair <RankedKey, object> > ToRankedKeyValuesUnordered(object o)
{
var ty = o.GetType();
if (TypeWrap(ty).IsGenericType&& ty.GetGenericTypeDefinition() == typeof(Dictionary <,>))
{
var keyType = TypeWrap(ty).GetGenericArguments()[0];
if (keyType != typeof(string))
{
// TODO: Should allow them and call `ToString`?
throw new NotImplementedException();
}
foreach (DictionaryEntry elem in (IDictionary)o)
{
yield return(new KeyValuePair <RankedKey, object>(
new RankedKey {
Order = 0, // Dictionary has no order infomation
Key = (string)elem.Key,
},
elem.Value));
}
}
else
{
var fields = TypeWrap(ty).GetFields();
foreach (var field in fields)
{
var fieldAttr = GetCustomAttribute <JsonFieldAttribute>(field);
// TODO: duplication check
var elemName = JsonFieldAttribute.FieldName(fieldAttr, field);
var elemValue = field.GetValue(o);
var fieldIgnoreAttr = GetCustomAttribute <JsonFieldIgnorableAttribute>(field);
if (JsonFieldIgnorableAttribute.IsIgnorable(fieldIgnoreAttr, elemValue))
{
continue;
}
yield return(new KeyValuePair <RankedKey, object>(
new RankedKey {
Order = JsonFieldAttribute.FieldOrder(fieldAttr),
Key = elemName,
},
elemValue));
}
}
}
object DeserializeToObject(INode node, NodeKind targetKind, Type targetType, State state, Type tag)
{
if (targetKind != NodeKind.Object)
{
var msg = state.CreateNodeConversionFailureMessage(node, targetType);
throw new DeserializeFailureException(msg);
}
if (node is NullNode)
{
return(null);
}
var oNode = node as ObjectNode;
if (oNode != null)
{
bool asDictionary =
targetType == typeof(object) ||
(TypeHelper.TypeWrap(targetType).IsGenericType&& targetType.GetGenericTypeDefinition() == typeof(Dictionary <,>))
;
if (asDictionary)
{
// To Dictionary
Type containerTy = targetType;
if (containerTy == typeof(object))
{
containerTy = typeof(Dictionary <string, object>);
}
var keyType = TypeHelper.TypeWrap(containerTy).GetGenericArguments()[0];
if (keyType != typeof(string))
{
throw new NotImplementedException();
}
var container = (IDictionary)Activator.CreateInstance(containerTy);
if (oNode.Elems == null)
{
goto dictionaryDecoded;
}
var allElemType = TypeHelper.TypeWrap(containerTy).GetGenericArguments()[1];
foreach (var elem in oNode.Elems)
{
var elemType = allElemType;
if (tag != null)
{
Type typeForKey;
if (DynamicResolver.Find(tag, elem.Key, out typeForKey))
{
elemType = typeForKey;
}
}
// TODO: duplication check
var v = DeserializeValue(elem.Value, elemType, state.NestAsElem(elem.Key), tag);
container.Add(elem.Key, v);
}
dictionaryDecoded:
return(container);
}
else
{
// Mapping to the structure
// TODO: add type check
var container = Activator.CreateInstance(targetType);
var fields = TypeHelper.TypeWrap(targetType).GetFields();
foreach (var field in fields)
{
var attr = TypeHelper.GetCustomAttribute <JsonFieldAttribute>(field);
// TODO: duplication check
var elemName = JsonFieldAttribute.FieldName(attr, field);
INode elem = null;
if (oNode.Elems == null || !oNode.Elems.TryGetValue(elemName, out elem))
{
// TODO: ignore or raise errors?
continue;
}
var elemState = state.NestAsElem(elemName);
if (attr != null && attr.TypeHints != null)
{
bool resolved = false;
foreach (var hint in attr.TypeHints)
{
var elemType = hint;
try
{
var v = DeserializeValue(elem, elemType, elemState, tag);
field.SetValue(container, v);
resolved = true;
break;
}
catch (Exception)
{
}
}
if (!resolved)
{
var msg = elemState.CreateNodeConversionFailureMessage(elem, attr.TypeHints);
throw new DeserializeFailureException(msg);
}
}
else
{
var elemType = field.FieldType;
var elemTag = tag;
if (attr != null && attr.DynamicResolverTag != null)
{
if (!TypeHelper.TypeWrap(elemType).IsGenericType || elemType.GetGenericTypeDefinition() != typeof(Dictionary <,>))
{
var baseMsg = "A type of the field which has DynamicResolver must be a Dictionary<,>";
var msg = elemState.CreateMessage("{0}: Type = {1}", baseMsg, elemType);
throw new DeserializeFailureException(msg);
}
var keyType = TypeHelper.TypeWrap(elemType).GetGenericArguments()[0];
if (keyType != typeof(string))
{
var baseMsg = "A key of the dictionary which has DynamicResolver must be a string type";
var msg = elemState.CreateMessage("{0}: KeyType = {1}", baseMsg, keyType);
throw new DeserializeFailureException(msg);
}
elemTag = attr.DynamicResolverTag;
}
var v = DeserializeValue(elem, elemType, elemState, elemTag);
field.SetValue(container, v);
}
}
return(container);
}
}
// A json node type is NOT an object but the target type is an object.
// Thus, change a target kind and retry.
return(DeserializeValueAs(node, node.Kind, targetType, state, tag));
}
