private static void AddInheritMetadata(Type type)
{
if (inherit_metadata.ContainsKey(type))
{
return;
}
InheritMetadata m = new InheritMetadata();
object[] attrs = type.GetCustomAttributes(typeof(JsonCanInheritAttribute), true);
m.IsInherit = attrs != null && attrs.Length > 0;
lock (inherit_metadata_lock)
{
try
{
inherit_metadata.Add(type, m);
}
catch (ArgumentException)
{
return;
}
}
}
private static object ReadValue(Type inst_type, JsonReader reader)
{
reader.Read();
if (reader.Token == JsonToken.ArrayEnd)
{
return(null);
}
Type underlying_type = Nullable.GetUnderlyingType(inst_type);
Type value_type = underlying_type ?? inst_type;
if (reader.Token == JsonToken.Null)
{
if (inst_type.IsClass || underlying_type != null)
{
return(null);
}
throw new JsonException(String.Format(
"Can't assign null to an instance of type {0}",
inst_type));
}
if (reader.Token == JsonToken.Double ||
reader.Token == JsonToken.Int ||
reader.Token == JsonToken.Long ||
reader.Token == JsonToken.String ||
reader.Token == JsonToken.Boolean)
{
Type json_type = reader.Value.GetType();
if (value_type.IsAssignableFrom(json_type))
{
////调试
//if(reader.Token == JsonToken.String)
//{
// string s = (string)reader.Value;
// if(s == "flyer_xuanfengzhan")
// {
// Debuger.LogError("调试");
// }
// return s;
//}
//else
return(reader.Value);
}
switch (reader.Token)
{
case JsonToken.Int:
if (value_type == typeof(long))
{
return((long)(int)reader.Value);
}
if (value_type == typeof(Property))
{
return(new Property((int)reader.Value));
}
break;
case JsonToken.Long:
if (value_type == typeof(int))
{
return((int)(long)reader.Value);
}
if (value_type == typeof(Property))
{
return(new Property((long)reader.Value));
}
break;
case JsonToken.String:
if (value_type == typeof(Property))
{
return(new Property((string)reader.Value));
}
break;
case JsonToken.Double:
if (value_type == typeof(float))
{
return((float)(double)reader.Value);
}
if (value_type == typeof(long))
{
return((long)(double)reader.Value);
}
if (value_type == typeof(int))
{
return((int)(double)reader.Value);
}
if (value_type == typeof(Property))
{
return(new Property((float)(double)reader.Value));
}
break;
}
// If there's a custom importer that fits, use it
if (custom_importers_table.ContainsKey(json_type) &&
custom_importers_table[json_type].ContainsKey(
value_type))
{
ImporterFunc importer =
custom_importers_table[json_type][value_type];
return(importer(reader.Value));
}
// Maybe there's a base importer that works
if (base_importers_table.ContainsKey(json_type) &&
base_importers_table[json_type].ContainsKey(
value_type))
{
ImporterFunc importer =
base_importers_table[json_type][value_type];
return(importer(reader.Value));
}
// Maybe it's an enum
if (value_type.IsEnum)
{
return(Enum.ToObject(value_type, reader.Value));
}
// Try using an implicit conversion operator
MethodInfo conv_op = GetConvOp(value_type, json_type);
if (conv_op != null)
{
return(conv_op.Invoke(null,
new object[] { reader.Value }));
}
// No luck
throw new JsonException(String.Format(
"Can't assign value '{0}' (type {1}) to type {2}",
reader.Value, json_type, inst_type));
}
object instance = null;
if (reader.Token == JsonToken.ArrayStart)
{
AddArrayMetadata(inst_type);
ArrayMetadata t_data = array_metadata[inst_type];
if (!t_data.IsArray && !t_data.IsList)
{
throw new JsonException(String.Format(
"Type {0} can't act as an array",
inst_type));
}
IList list;
Type elem_type;
if (!t_data.IsArray)
{
list = (IList)Activator.CreateInstance(inst_type);
elem_type = t_data.ElementType;
}
else
{
list = new ArrayList();
elem_type = inst_type.GetElementType();
}
while (true)
{
object item = ReadValue(elem_type, reader);
if (item == null && reader.Token == JsonToken.ArrayEnd)
{
break;
}
list.Add(item);
}
if (t_data.IsArray)
{
int n = list.Count;
instance = Array.CreateInstance(elem_type, n);
for (int i = 0; i < n; i++)
{
((Array)instance).SetValue(list[i], i);
}
}
else
{
instance = list;
}
}
else if (reader.Token == JsonToken.ObjectStart)
{
AddInheritMetadata(value_type);
InheritMetadata i_data = inherit_metadata[value_type];
//如果允许多态的话要判断当前的类型
if (i_data.IsInherit)
{
reader.Read();
string property = (string)reader.Value;
if (property == "__type")
{
string trueTypeName = (string)ReadValue(typeof(string), reader);
Type trueType;
if (!typeDict.TryGetValue(trueTypeName, out trueType))
{
trueType = Type.GetType(trueTypeName);
typeDict[trueTypeName] = trueType;
}
if (trueType != null)
{
value_type = trueType;
}
else
{
Debuger.LogError("找不到类名对应的类型:{0}", trueTypeName);
}
}
else
{
Debuger.LogError("逻辑错误，可能是老版本");
}
}
instance = Activator.CreateInstance(value_type);
AddObjectMetadata(value_type);
ObjectMetadata t_data = object_metadata[value_type];
while (true)
{
reader.Read();
if (reader.Token == JsonToken.ObjectEnd)
{
break;
}
string property = (string)reader.Value;
if (t_data.Properties.ContainsKey(property))
{
PropertyMetadata prop_data =
t_data.Properties[property];
if (prop_data.IsField)
{
((FieldInfo)prop_data.Info).SetValue(
instance, ReadValue(prop_data.Type, reader));
}
else
{
PropertyInfo p_info =
(PropertyInfo)prop_data.Info;
if (p_info.CanWrite)
{
p_info.SetValue(
instance,
ReadValue(prop_data.Type, reader),
null);
}
else
{
ReadValue(prop_data.Type, reader);
}
}
}
else if (t_data.IsList)
{
IList l = (IList)instance;
int idx;
if (!int.TryParse(property, out idx))
{
Debuger.LogError("json尝试将键值对转为数组失败，类型：{0}，转换失败的key:{1}", value_type.Name, property);
ReadSkip(reader);
continue;
}
//如果不够，那么先补上
for (int i = l.Count; i <= idx; ++i)
{
if (t_data.ElementType.IsValueType)
{
l.Add(Activator.CreateInstance(value_type));
}
else
{
l.Add(null);
}
}
//设置值
l[idx] = ReadValue(t_data.ElementType, reader);
}
else if (t_data.IsDictionary)
{
if (t_data.KeyType == typeof(string))
{
((IDictionary)instance).Add(property, ReadValue(t_data.ElementType, reader));
}
else
{
object k;
if (!StringUtil.TryParse(property, t_data.KeyType, out k))
{
Debuger.LogError("json尝试将键值对转换成:{0}时失败，转换失败的key:{1}", value_type.Name, property);
ReadSkip(reader);
continue;
}
((IDictionary)instance).Add(k, ReadValue(t_data.ElementType, reader));
}
}
else if (!reader.SkipNonMembers)
{
throw new JsonException(String.Format(
"The type {0} doesn't have the " +
"property '{1}'",
inst_type, property));
}
else
{
ReadSkip(reader);
continue;
}
}
}
return(instance);
}
private static void WriteValue(object obj, JsonWriter writer,
bool writer_is_private,
int depth)
{
if (depth > max_nesting_depth)
{
throw new JsonException(
String.Format("Max allowed object depth reached while " +
"trying to export from type {0}",
obj.GetType()));
}
if (obj == null)
{
writer.Write(null);
return;
}
if (obj is IJsonWrapper)
{
if (writer_is_private)
{
writer.TextWriter.Write(((IJsonWrapper)obj).ToJson());
}
else
{
((IJsonWrapper)obj).ToJson(writer);
}
return;
}
if (obj is Property)
{
((Property)obj).ToJson(writer);
return;
}
if (obj is String)
{
writer.Write((string)obj);
return;
}
if (obj is float)
{
writer.Write((double)(float)obj);
return;
}
if (obj is Double)
{
writer.Write((double)obj);
return;
}
if (obj is Int32)
{
writer.Write((int)obj);
return;
}
if (obj is Boolean)
{
writer.Write((bool)obj);
return;
}
if (obj is Int64)
{
writer.Write((long)obj);
return;
}
if (obj is Array)
{
writer.WriteArrayStart();
foreach (object elem in (Array)obj)
{
WriteValue(elem, writer, writer_is_private, depth + 1);
}
writer.WriteArrayEnd();
return;
}
if (obj is IList)
{
writer.WriteArrayStart();
foreach (object elem in (IList)obj)
{
WriteValue(elem, writer, writer_is_private, depth + 1);
}
writer.WriteArrayEnd();
return;
}
if (obj is IDictionary)
{
writer.WriteObjectStart();
foreach (DictionaryEntry entry in (IDictionary)obj)
{
writer.WritePropertyName((string)entry.Key);
WriteValue(entry.Value, writer, writer_is_private,
depth + 1);
}
writer.WriteObjectEnd();
return;
}
Type obj_type = obj.GetType();
// See if there's a custom exporter for the object
if (custom_exporters_table.ContainsKey(obj_type))
{
ExporterFunc exporter = custom_exporters_table[obj_type];
exporter(obj, writer);
return;
}
// If not, maybe there's a base exporter
if (base_exporters_table.ContainsKey(obj_type))
{
ExporterFunc exporter = base_exporters_table[obj_type];
exporter(obj, writer);
return;
}
// Last option, let's see if it's an enum
if (obj is Enum)
{
Type e_type = Enum.GetUnderlyingType(obj_type);
if (e_type == typeof(long) ||
e_type == typeof(uint) ||
e_type == typeof(ulong))
{
writer.Write((ulong)obj);
}
else
{
writer.Write((int)obj);
}
return;
}
// Okay, so it looks like the input should be exported as an
// object
AddTypeProperties(obj_type);
AddInheritMetadata(obj_type);
IList <PropertyMetadata> props = type_properties[obj_type];
InheritMetadata im = inherit_metadata[obj_type];
writer.WriteObjectStart();
//如果是允许继承的，把类型也写上
if (im.IsInherit)
{
writer.WritePropertyName("__type");
WriteValue(obj_type.ToString(), writer, writer_is_private, depth + 1);
}
//写类的字段和属性
foreach (PropertyMetadata p_data in props)
{
if (p_data.IsField)
{
writer.WritePropertyName(p_data.Info.Name);
WriteValue(((FieldInfo)p_data.Info).GetValue(obj),
writer, writer_is_private, depth + 1);
}
else
{
PropertyInfo p_info = (PropertyInfo)p_data.Info;
if (p_info.CanRead)
{
writer.WritePropertyName(p_data.Info.Name);
WriteValue(p_info.GetValue(obj, null),
writer, writer_is_private, depth + 1);
}
}
}
writer.WriteObjectEnd();
}
