In loading assets of serializable class, some field of serializable enum type is not add on TypeTree.

[asin83]

Look at the image, and TimelineClip class have these fields;

    [Serializable]
    public class TimelineClip : ITimelineItem, ISerializationCallbackReceiver
    {
        ...
        [SerializeField] 
        private AnimationCurve m_MixOutCurve;
        [SerializeField] 
        private BlendCurveMode m_BlendInCurveMode; 
        [SerializeField]
        private BlendCurveMode m_BlendOutCurveMode;
        [SerializeField] 
        private List<string> m_ExposedParameterNames; 
        ...
        public enum BlendCurveMode
        {
            Auto = 0,
            Manual = 1
        }

The TypeTreeNode of BlendCurveMode should be added.

On debugging the assets, TypeReference.IsValueType returned false.

I think type.CheckedResolve() needs on checking value type.

Unity.CecilTools.Extensions.TypeReferenceExtensions (AssetStudioUtility).

        public static bool IsEnum(this TypeReference type)
        {
            return type.IsValueType && !type.IsPrimitive && type.CheckedResolve().IsEnum;
        }

[asin83]

I wrote a simple test.

using System;
using System.Linq;
using AssetStudio;
using NUnit.Framework;
using Unity.CecilTools.Extensions;

namespace AssetStudioTest
{
    public class TimelineClipLoadTest
    {
        [Test]
        public void TestTimelineClipLoding()
        {
            var assemblyLoader = new AssemblyLoader();
            assemblyLoader.Load(@"M:\TimelineClipAssemblies");
            var helper = new SerializedTypeHelper(new[] { 2017, 4, 30, 1, 2 });
            var typeDef = assemblyLoader.GetTypeDefinition("UnityEngine.Timeline.dll", "UnityEngine.Timeline.TimelineClip");
            var field = typeDef.Fields.FirstOrDefault(definition => definition.Name.Contains("m_BlendInCurveMode"));
            Console.WriteLine($"Found: {field.FullName}");
            Console.WriteLine($"Reference ValueType: {field.FieldType.IsValueType}");
            Console.WriteLine($"Resolved ValueType: {field.FieldType.CheckedResolve().IsValueType}");
            Console.WriteLine($"Enum: {field.FieldType.IsEnum()}");
            var typeDefinitionConverter = new TypeDefinitionConverter(typeDef, helper, 1);
            var treeNodes = typeDefinitionConverter.ConvertToTypeTreeNodes();
            var targetIndex = treeNodes.FindIndex(node => node.m_Name == "m_BlendInCurveMode");
            Assert.True(targetIndex >= 0);
        }
    }
}

UnityEngine.Timeline.dll.zip

[asin83]

Sorry, when I use original dll which is inside Unity Editor directory, this test worked. I will pay attention to difference with this dumped dll.

[Perfare]

I noticed that your dll is generated by Il2CppInspector, through debugging, I found that it is generating wrong information for all Nested types, causing cecil to read errors, and finally causing IsValueType here to return false. https://github.com/Perfare/AssetStudio/blob/dc9429feac6d991fb5f02c746dacbbabce5a50ed/AssetStudioUtility/Unity.SerializationLogic/UnitySerializationLogic.cs#L258 Also I noticed that you are working on Genshin Impact, I think you can try this il2cppdumper modified by others https://github.com/khang06/Il2CppDumper-YuanShen At least for this type, Il2CppDumper works well.

[asin83]

I also noticed the problem that nested class use parent class signature, and i'm trying to fix Il2CppInspector. I will try Il2CppDumper-YuanShen later.

Thank you.

[asin83]

I gave up on fixing Il2CppInspector... It's working good on Il2CppDumper-YuanShen.