private static bool _TryCastValue(ref Utf8JsonReader reader, Type vtype, out Object value)
{
value = null;
if (reader.TokenType == JSONTOKEN.EndArray)
{
return(false);
}
if (reader.TokenType == JSONTOKEN.EndObject)
{
return(false);
}
// if (reader.TokenType == JsonToken.EndConstructor) return false;
if (reader.TokenType == JSONTOKEN.PropertyName)
{
reader.Read();
}
// untangle nullable
var ntype = Nullable.GetUnderlyingType(vtype);
if (ntype != null)
{
vtype = ntype;
}
if (vtype == typeof(String))
{
value = reader.AsString(); return(true);
}
if (vtype == typeof(Boolean))
{
value = reader.AsBoolean(); return(true);
}
if (vtype == typeof(Int16))
{
value = reader.GetInt16(); return(true);
}
if (vtype == typeof(Int32))
{
value = reader.GetInt32(); return(true);
}
if (vtype == typeof(Int64))
{
value = reader.GetInt64(); return(true);
}
if (vtype == typeof(UInt16))
{
value = reader.GetUInt16(); return(true);
}
if (vtype == typeof(UInt32))
{
value = reader.GetUInt32(); return(true);
}
if (vtype == typeof(UInt64))
{
value = reader.GetUInt64(); return(true);
}
if (vtype == typeof(Single))
{
value = reader.GetSingle(); return(true);
}
if (vtype == typeof(Double))
{
value = reader.GetDouble(); return(true);
}
if (vtype == typeof(Decimal))
{
value = reader.GetDecimal(); return(true);
}
if (vtype.IsEnum)
{
value = reader.AsEnum(vtype); return(true);
}
if (vtype == typeof(Vector2))
{
var l = new List <float>(2);
DeserializePropertyList <float>(ref reader, l);
value = new Vector2(l[0], l[1]);
return(true);
}
if (vtype == typeof(Vector3))
{
var l = new List <float>(3);
DeserializePropertyList <float>(ref reader, l);
value = new Vector3(l[0], l[1], l[2]);
return(true);
}
if (vtype == typeof(Vector4))
{
var l = new List <float>(4);
DeserializePropertyList <float>(ref reader, l);
value = new Vector4(l[0], l[1], l[2], l[3]);
return(true);
}
if (vtype == typeof(Quaternion))
{
var l = new List <float>(4);
DeserializePropertyList <float>(ref reader, l);
value = new System.Numerics.Quaternion(l[0], l[1], l[2], l[3]);
return(true);
}
if (vtype == typeof(Matrix4x4))
{
var l = new List <float>(16);
DeserializePropertyList <float>(ref reader, l);
value = new Matrix4x4
(
l[0], l[1], l[2], l[3],
l[4], l[5], l[6], l[7],
l[8], l[9], l[10], l[11],
l[12], l[13], l[14], l[15]
);
return(true);
}
if (typeof(JsonSerializable).IsAssignableFrom(vtype))
{
var item = Activator.CreateInstance(vtype, true) as JsonSerializable;
// System.Diagnostics.Debug.Assert(reader.TokenType == JSONTOKEN.StartObject);
item.Deserialize(ref reader);
// System.Diagnostics.Debug.Assert(reader.TokenType == JSONTOKEN.EndObject);
value = item;
return(true);
}
if (vtype.IsGenericType)
{
if (vtype.GetGenericTypeDefinition() == typeof(Dictionary <,>))
{
var valType = vtype.GetGenericArguments()[1];
if (valType == typeof(Int32))
{
var dict = new Dictionary <string, Int32>();
DeserializePropertyDictionary(ref reader, dict);
value = dict;
return(true);
}
}
throw new NotImplementedException($"Can't deserialize {vtype}");
}
throw new NotImplementedException($"Can't deserialize {vtype}");
}