private object ReadRawObject(BinaryReader reader, object item, int baseOffset)
{
var properties = item.GetType()
.GetProperties()
.Select(x => GetPropertySettings(item.GetType(), x))
.Where(x => x.DataInfo != null)
.ToList();
var args = new MappingReadArgs
{
Reader = reader
};
foreach (var property in properties)
{
if (property.DataInfo.Offset.HasValue)
{
var newPosition = baseOffset + property.DataInfo.Offset.Value;
if (reader.BaseStream.Position != newPosition + 1)
{
args.BitIndex = 0;
}
reader.BaseStream.Position = newPosition;
}
args.Count = property.GetLengthFunc?.Invoke(item) ?? property.DataInfo.Count;
var value = ReadProperty(args, property.MemberInfo.PropertyType, property);
property.MemberInfo.SetValue(item, value, BindingFlags.Default, null, null, null);
}
args.BitIndex = 0;
return(item);
}
private object ReadProperty(MappingReadArgs args, Type type, MyProperty property)
{
if (type != typeof(bool))
{
args.BitIndex = 0;
}
if (mappings.TryGetValue(type, out var mapping))
{
args.DataAttribute = property.DataInfo;
return(mapping.Reader(args));
}
else if (type.IsEnum)
{
var underlyingType = Enum.GetUnderlyingType(type);
if (!mappings.TryGetValue(underlyingType, out mapping))
{
throw new InvalidDataException($"The enum {type.Name} has an unsupported size.");
}
args.DataAttribute = property.DataInfo;
return(mapping.Reader(args));
}
else if (type.IsGenericType && (type.GetGenericTypeDefinition() == typeof(List <>)))
{
var listType = type.GetGenericArguments().FirstOrDefault();
if (listType == null)
{
throw new InvalidDataException($"The list {property.MemberInfo.Name} does not have any specified type.");
}
var addMethod = type.GetMethod("Add");
var list = Activator.CreateInstance(typeof(List <>).MakeGenericType(listType));
for (int i = 0; i < args.Count; i++)
{
var oldPosition = (int)args.Reader.BaseStream.Position;
var item = ReadProperty(args, listType, property);
addMethod.Invoke(list, new[] { item });
var newPosition = args.Reader.BaseStream.Position;
args.Reader.BaseStream.Position += Math.Max(0, property.DataInfo.Stride - (newPosition - oldPosition));
}
return(list);
}
else if (type.IsArray)
{
if (type.GetArrayRank() > 1)
{
throw new NotImplementedException("Arrays with a rank greater than one are not currently supported.");
}
var arrayType = type.GetElementType();
if (arrayType == null)
{
throw new InvalidDataException($"Unable to get the underlying type of {type.Name}.");
}
var array = Array.CreateInstance(arrayType, args.Count);
if (arrayType.IsEnum)
{
for (var i = 0; i < args.Count; i++)
{
var oldPosition = (int)args.Reader.BaseStream.Position;
var item = ReadProperty(args, arrayType, property);
array.SetValue(Enum.ToObject(arrayType, item), i);
var newPosition = args.Reader.BaseStream.Position;
args.Reader.BaseStream.Position += Math.Max(0, property.DataInfo.Stride - (newPosition - oldPosition));
}
}
else
{
for (var i = 0; i < args.Count; i++)
{
var oldPosition = (int)args.Reader.BaseStream.Position;
var item = ReadProperty(args, arrayType, property);
array.SetValue(item, i);
var newPosition = args.Reader.BaseStream.Position;
args.Reader.BaseStream.Position += Math.Max(0, property.DataInfo.Stride - (newPosition - oldPosition));
}
}
return(array);
}
else
{
return(ReadRawObject(args.Reader, Activator.CreateInstance(type), (int)args.Reader.BaseStream.Position));
}
}