Bump version to 1.2.1

Updated the version number in the project properties from 1.2.0 to 1.2.1.

AssetRipper.CIL.Tests/AssetRipper.CIL.Tests.csproj

@@ -9,17 +9,17 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="coverlet.collector" Version="6.0.3">
+		<PackageReference Include="coverlet.collector" Version="6.0.4">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
-		<PackageReference Include="NUnit" Version="4.3.2" />
-		<PackageReference Include="NUnit.Analyzers" Version="4.6.0">
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+		<PackageReference Include="NUnit" Version="4.4.0" />
+		<PackageReference Include="NUnit.Analyzers" Version="4.10.0">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
-		<PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
+		<PackageReference Include="NUnit3TestAdapter" Version="5.1.0" />
 	</ItemGroup>
 
 	<ItemGroup>

AssetRipper.CIL.Tests/LoadIndirectTests.cs

@@ -94,7 +94,7 @@ public class LoadIndirectTests
 	private static void AssertCorrectLoadIndirect(TypeSignature typeToLoad, CilCode expectedOpCode)
 	{
 		MethodDefinition method = new MethodDefinition("Test", MethodAttributes.Public | MethodAttributes.Static, null);
-		method.CilMethodBody = new(method);
+		method.CilMethodBody = new();
 		CilInstructionCollection instructions = method.CilMethodBody.Instructions;
 		instructions.AddLoadIndirect(typeToLoad);
 		Assert.That(instructions, Has.Count.EqualTo(1));

AssetRipper.CIL.Tests/StoreIndirectTests.cs

@@ -94,7 +94,7 @@ public class StoreIndirectTests
 	private static void AssertCorrectStoreIndirect(TypeSignature typeToStore, CilCode expectedOpCode)
 	{
 		MethodDefinition method = new MethodDefinition("Test", MethodAttributes.Public | MethodAttributes.Static, null);
-		method.CilMethodBody = new(method);
+		method.CilMethodBody = new();
 		CilInstructionCollection instructions = method.CilMethodBody.Instructions;
 		instructions.AddStoreIndirect(typeToStore);
 		Assert.That(instructions, Has.Count.EqualTo(1));

AssetRipper.CIL/AssetRipper.CIL.csproj

@@ -15,8 +15,9 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="AsmResolver.DotNet" Version="6.0.0-beta.1" />
+		<PackageReference Include="AsmResolver.DotNet" Version="6.0.0-beta.4" />
 		<PackageReference Include="PolySharp" Version="1.15.0" PrivateAssets="all" IncludeAssets="runtime; build; native; contentfiles; analyzers; buildtransitive" />
+		<PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.1.2" />
 	</ItemGroup>
 
 	<ItemGroup>

AssetRipper.CIL/CilInstructionCollectionExtensions.cs

@@ -22,7 +22,7 @@ public static class CilInstructionCollectionExtensions
 		{
 			instructions.AddDefaultPrimitiveValue(corLibTypeSignature);
 		}
-		else if (type is ByReferenceTypeSignature)
+		else if (type is ByReferenceTypeSignature or PointerTypeSignature)
 		{
 			instructions.AddNullRef();
 		}
@@ -43,7 +43,7 @@ public static class CilInstructionCollectionExtensions
 		{
 			instructions.InitializeDefaultPrimitiveValue(corLibTypeSignature, localVariable);
 		}
-		else if (type is ByReferenceTypeSignature)
+		else if (type is ByReferenceTypeSignature or PointerTypeSignature)
 		{
 			instructions.AddNullRef();
 			instructions.Add(CilOpCodes.Stloc, localVariable);
@@ -71,6 +71,12 @@ public static class CilInstructionCollectionExtensions
 		instructions.Add(CilOpCodes.Ceq);
 	}
 
+	public static void AddThrowNull(this CilInstructionCollection instructions)
+	{
+		instructions.Add(CilOpCodes.Ldnull);
+		instructions.Add(CilOpCodes.Throw);
+	}
+
 	public static CilInstruction AddLoadElement(this CilInstructionCollection instructions, TypeSignature elementType)
 	{
 		return elementType switch

AssetRipper.CIL/CorLibTypeFactoryExtensions.cs

@@ -0,0 +1,83 @@
+using AsmResolver.DotNet.Signatures;
+
+namespace AssetRipper.CIL;
+
+internal static class CorLibTypeFactoryExtensions
+{
+	public static CorLibTypeSignature? FromType(this CorLibTypeFactory factory, Type type)
+	{
+		if (type == typeof(bool))
+		{
+			return factory.Boolean;
+		}
+		if (type == typeof(char))
+		{
+			return factory.Char;
+		}
+		if (type == typeof(byte))
+		{
+			return factory.Byte;
+		}
+		if (type == typeof(sbyte))
+		{
+			return factory.SByte;
+		}
+		if (type == typeof(short))
+		{
+			return factory.Int16;
+		}
+		if (type == typeof(ushort))
+		{
+			return factory.UInt16;
+		}
+		if (type == typeof(int))
+		{
+			return factory.Int32;
+		}
+		if (type == typeof(uint))
+		{
+			return factory.UInt32;
+		}
+		if (type == typeof(long))
+		{
+			return factory.Int64;
+		}
+		if (type == typeof(ulong))
+		{
+			return factory.UInt64;
+		}
+		if (type == typeof(float))
+		{
+			return factory.Single;
+		}
+		if (type == typeof(double))
+		{
+			return factory.Double;
+		}
+		if (type == typeof(string))
+		{
+			return factory.String;
+		}
+		if (type == typeof(IntPtr))
+		{
+			return factory.IntPtr;
+		}
+		if (type == typeof(UIntPtr))
+		{
+			return factory.UIntPtr;
+		}
+		if (type == typeof(object))
+		{
+			return factory.Object;
+		}
+		if (type == typeof(void))
+		{
+			return factory.Void;
+		}
+		if (type == typeof(TypedReference))
+		{
+			return factory.TypedReference;
+		}
+		return null;
+	}
+}

AssetRipper.CIL/CustomAttributeExtensions.cs

@@ -0,0 +1,30 @@
+using AsmResolver.DotNet;
+using AsmResolver.DotNet.Signatures;
+
+namespace AssetRipper.CIL;
+
+public static class CustomAttributeExtensions
+{
+	public static CustomAttributeArgument AddFixedArgument(this CustomAttribute attribute, TypeSignature paramType, object paramValue)
+	{
+		attribute.Signature ??= new();
+		CustomAttributeArgument argument = new(paramType, paramValue);
+		attribute.Signature.FixedArguments.Add(argument);
+		return argument;
+	}
+
+	public static CustomAttributeArgument AddFixedArgument<T>(this CustomAttribute attribute, TypeSignature paramType, T[] paramValue)
+	{
+		CustomAttributeArgument argument = new CustomAttributeArgument(paramType, paramValue.Select(e => (object?)e));
+		attribute.Signature!.FixedArguments.Add(argument);
+		return argument;
+	}
+
+	public static CustomAttributeNamedArgument AddNamedArgument(this CustomAttribute attribute, TypeSignature memberType, string memberName, TypeSignature paramType, object paramValue, CustomAttributeArgumentMemberType memberKind)
+	{
+		CustomAttributeArgument argument = new CustomAttributeArgument(paramType, paramValue);
+		CustomAttributeNamedArgument namedArgument = new CustomAttributeNamedArgument(memberKind, memberName, memberType, argument);
+		attribute.Signature!.NamedArguments.Add(namedArgument);
+		return namedArgument;
+	}
+}

AssetRipper.CIL/FieldDefinitionExtensions.cs

@@ -57,4 +57,9 @@ public static class FieldDefinitionExtensions
 			return false;
 		}
 	}
+
+	public static bool IsFixedBuffer(this FieldDefinition field)
+	{
+		return field.HasCustomAttribute("System.Runtime.CompilerServices", "FixedBufferAttribute");
+	}
 }

AssetRipper.CIL/IHasCustomAttributeExtensions.cs

@@ -0,0 +1,104 @@
+using AsmResolver.DotNet;
+using AsmResolver.DotNet.Signatures;
+using System.Runtime.CompilerServices;
+
+namespace AssetRipper.CIL;
+
+public static class IHasCustomAttributeExtensions
+{
+	public static CustomAttribute AddCustomAttribute(this IHasCustomAttribute _this, IMethodDefOrRef constructor)
+	{
+		if (constructor is ICustomAttributeType usableConstructor)
+		{
+			CustomAttribute attribute = new(usableConstructor);
+			_this.CustomAttributes.Add(attribute);
+			return attribute;
+		}
+		else
+		{
+			throw new ArgumentException("Constructor is not ICustomAttributeType", nameof(constructor));
+		}
+	}
+
+	public static CustomAttribute AddCustomAttribute(this IHasCustomAttribute _this, IMethodDefOrRef constructor, TypeSignature paramType, object paramValue)
+	{
+		CustomAttribute attribute = _this.AddCustomAttribute(constructor);
+		attribute.AddFixedArgument(paramType, paramValue);
+		return attribute;
+	}
+
+	public static CustomAttribute AddCustomAttribute<T>(this IHasCustomAttribute _this, IMethodDefOrRef constructor, SzArrayTypeSignature paramType, T[] paramValue)
+	{
+		CustomAttribute attribute = _this.AddCustomAttribute(constructor);
+		attribute.AddFixedArgument(paramType, paramValue);
+		return attribute;
+	}
+
+	public static CustomAttribute AddCustomAttribute(this IHasCustomAttribute _this, IMethodDefOrRef constructor, params (TypeSignature, object)[] parameters)
+	{
+		CustomAttribute attribute = _this.AddCustomAttribute(constructor);
+		for (int i = 0; i < parameters.Length; i++)
+		{
+			attribute.AddFixedArgument(parameters[i].Item1, parameters[i].Item2);
+		}
+		return attribute;
+	}
+
+	internal static ModuleDefinition GetModule(this IHasCustomAttribute _this)
+	{
+		return (_this as IModuleProvider)?.ContextModule ?? throw new ArgumentException("Entity does not have a module", nameof(_this));
+	}
+
+	public static CustomAttribute AddFlagsAttribute(this IHasCustomAttribute _this)
+	{
+		ModuleDefinition module = _this.GetModule();
+
+		if (module.TryGetTopLevelType("System", nameof(FlagsAttribute), out TypeDefinition? flagsType))
+		{
+			return _this.AddCustomAttribute(flagsType.GetDefaultConstructor());
+		}
+		else
+		{
+			TypeReference flagsTypeRef = new(module.CorLibTypeFactory.CorLibScope, "System", nameof(FlagsAttribute));
+			MemberReference constructor = new(flagsTypeRef, ".ctor", MethodSignature.CreateInstance(module.CorLibTypeFactory.Void));
+			return _this.AddCustomAttribute(module.DefaultImporter.ImportMethod(constructor));
+		}
+	}
+
+	/// <summary>
+	/// Applies the <see cref="CompilerGeneratedAttribute"/>
+	/// </summary>
+	/// <param name="_this">The entity on which to apply the attribute</param>
+	/// <returns>The resulting custom attribute</returns>
+	public static CustomAttribute AddCompilerGeneratedAttribute(this IHasCustomAttribute _this)
+	{
+		ModuleDefinition module = _this.GetModule();
+
+		if (module.TryGetTopLevelType("System.Runtime.CompilerServices", nameof(CompilerGeneratedAttribute), out TypeDefinition? compilerGeneratedType))
+		{
+			return _this.AddCustomAttribute(compilerGeneratedType.GetDefaultConstructor());
+		}
+		else
+		{
+			AssemblyReference compilerServicesAssembly = GetOrAddReferenceToSystemRuntimeCompilerServices(module);
+
+			TypeReference compilerGeneratedTypeRef = new(compilerServicesAssembly, "System.Runtime.CompilerServices", nameof(CompilerGeneratedAttribute));
+
+			MemberReference constructor = new(compilerGeneratedTypeRef, ".ctor", MethodSignature.CreateInstance(module.CorLibTypeFactory.Void));
+
+			return _this.AddCustomAttribute(module.DefaultImporter.ImportMethod(constructor));
+		}
+
+		static AssemblyReference GetOrAddReferenceToSystemRuntimeCompilerServices(ModuleDefinition module)
+		{
+			AssemblyReference? compilerServicesAssembly = module.AssemblyReferences.FirstOrDefault(a => a.Name == "System.Runtime.CompilerServices");
+			if (compilerServicesAssembly is null)
+			{
+				Version version = module.CorLibTypeFactory.CorLibScope.GetAssembly()?.Version ?? new Version(0, 0, 0, 0);
+				compilerServicesAssembly = new("System.Runtime.CompilerServices", version);
+				module.AssemblyReferences.Add(compilerServicesAssembly);
+			}
+			return compilerServicesAssembly;
+		}
+	}
+}

AssetRipper.CIL/Manipulation/SwitchRemover.cs

@@ -11,7 +11,7 @@ public sealed class SwitchRemover : ICilManipulator
 {
 	public void Execute(CilManipulationContext context)
 	{
-		ModuleDefinition? module = context.Instructions.Owner.Owner.Module;
+		ModuleDefinition? module = context.Instructions.Owner.Owner?.DeclaringModule;
 		if (module is null)
 		{
 			return;

AssetRipper.CIL/MethodDefinitionExtensions.cs

@@ -1,6 +1,8 @@
 using AsmResolver.DotNet;
+using AsmResolver.DotNet.Code.Cil;
 using AsmResolver.DotNet.Collections;
 using AsmResolver.DotNet.Signatures;
+using AsmResolver.PE.DotNet.Cil;
 using AsmResolver.PE.DotNet.Metadata.Tables;
 using System.Diagnostics.CodeAnalysis;
 
@@ -23,6 +25,24 @@ public static class MethodDefinitionExtensions
 		MethodStubber.FillMethodBodyWithStub(methodDefinition);
 	}
 
+	/// <summary>
+	/// Replaces the method body with: <code>throw null;</code>
+	/// </summary>
+	/// <remarks>
+	/// If the method is not managed or should not have a body, this method does nothing.
+	/// </remarks>
+	/// <param name="methodDefinition">The method to modify.</param>
+	public static void ReplaceMethodBodyWithThrowNull(this MethodDefinition methodDefinition)
+	{
+		if (!methodDefinition.IsManagedMethodWithBody())
+		{
+			return;
+		}
+		methodDefinition.CilMethodBody = new();
+		CilInstructionCollection methodInstructions = methodDefinition.CilMethodBody.Instructions;
+		methodInstructions.AddThrowNull();
+	}
+
 	public static bool IsInstance(this MethodDefinition methodDefinition)
 	{
 		return !methodDefinition.IsStatic;
@@ -72,6 +92,11 @@ public static class MethodDefinitionExtensions
 			&& !managedMethod.IsRuntime;
 	}
 
+	public static CilInstructionCollection GetInstructions(this MethodDefinition method)
+	{
+		return method.CilMethodBody?.Instructions ?? throw new ArgumentException("CilMethodBody was null", nameof(method));
+	}
+
 	public static bool IsAutoPropertyGetMethod(this MethodDefinition method, [NotNullWhen(true)] out FieldDefinition? backingField)
 	{
 		if (!method.IsGetMethod
@@ -131,12 +156,12 @@ public static class MethodDefinitionExtensions
 		}
 	}
 
-	public static Parameter AddParameter(this MethodDefinition method, TypeSignature parameterSignature, string parameterName)
+	public static Parameter AddParameter(this MethodDefinition method, TypeSignature parameterSignature, string? parameterName)
 	{
 		return method.AddParameter(parameterSignature, parameterName, out _);
 	}
 
-	public static Parameter AddParameter(this MethodDefinition method, TypeSignature parameterSignature, string parameterName, out ParameterDefinition parameterDefinition)
+	public static Parameter AddParameter(this MethodDefinition method, TypeSignature parameterSignature, string? parameterName, out ParameterDefinition parameterDefinition)
 	{
 		parameterDefinition = new ParameterDefinition((ushort)(method.Signature!.ParameterTypes.Count + 1), parameterName, default);
 		method.Signature.ParameterTypes.Add(parameterSignature);

AssetRipper.CIL/MethodStubber.cs

@@ -16,7 +16,7 @@ internal static class MethodStubber
 			return;
 		}
 
-		methodDefinition.CilMethodBody = new(methodDefinition);
+		methodDefinition.CilMethodBody = new();
 		CilInstructionCollection methodInstructions = methodDefinition.CilMethodBody.Instructions;
 
 		if (methodDefinition.IsAutoPropertyGetMethod(out FieldDefinition? backingField))
@@ -55,7 +55,7 @@ internal static class MethodStubber
 			TypeDefinition declaringType = methodDefinition.DeclaringType!;
 			foreach (FieldDefinition field in declaringType.Fields)
 			{
-				if (field.IsStatic || field.Signature is null)
+				if (field.IsStatic || field.Signature is null || field.IsFixedBuffer())
 				{
 					continue;
 				}
@@ -131,13 +131,13 @@ internal static class MethodStubber
 				return null;
 			}
 			MethodDefinition? baseConstructor = GetFirstCompatibleConstructor(methodDefinition.DeclaringType, baseTypeResolved);
-			if (baseConstructor is null || methodDefinition.DeclaringType.Module is null)
+			if (baseConstructor is null || methodDefinition.DeclaringType.DeclaringModule is null)
 			{
 				return null;
 			}
 			else
 			{
-				return methodDefinition.DeclaringType.Module.DefaultImporter.ImportMethod(baseConstructor);
+				return methodDefinition.DeclaringType.DeclaringModule.DefaultImporter.ImportMethod(baseConstructor);
 			}
 		}
 		else if (baseType is TypeSpecification baseTypeSpec)
@@ -153,11 +153,11 @@ internal static class MethodStubber
 				return null;
 			}
 			MethodDefinition? baseConstructor = GetFirstCompatibleConstructor(methodDefinition.DeclaringType, baseTypeResolved);
-			if (baseConstructor is null || methodDefinition.DeclaringType.Module is null)
+			if (baseConstructor is null || methodDefinition.DeclaringType.DeclaringModule is null)
 			{
 				return null;
 			}
-			IMethodDefOrRef baseConstructorImported = methodDefinition.DeclaringType.Module.DefaultImporter.ImportMethod(baseConstructor);
+			IMethodDefOrRef baseConstructorImported = methodDefinition.DeclaringType.DeclaringModule.DefaultImporter.ImportMethod(baseConstructor);
 			return new MemberReference(baseType, baseConstructorImported.Name, baseConstructorImported.Signature);
 		}
 
@@ -165,14 +165,7 @@ internal static class MethodStubber
 
 		static MethodDefinition? GetFirstCompatibleConstructor(TypeDefinition declaringType, TypeDefinition baseType)
 		{
-			if (declaringType.Module == baseType.Module)
-			{
-				return baseType.Methods.FirstOrDefault(m => m.IsInstanceConstructor() && !m.IsPrivate);
-			}
-			else
-			{
-				return baseType.Methods.FirstOrDefault(m => m.IsInstanceConstructor() && (m.IsFamily || m.IsPublic));
-			}
+			return baseType.Methods.FirstOrDefault(m => m.IsInstanceConstructor() && m.IsAccessibleFromType(declaringType));
 		}
 	}
 
@@ -190,7 +183,7 @@ internal static class MethodStubber
 		}
 
 		TypeSignature[] typeArguments = Enumerable.Range(0, field.DeclaringType.GenericParameters.Count)
-			.Select(i => new GenericParameterSignature(field.Module, GenericParameterType.Type, i))
+			.Select(i => new GenericParameterSignature(field.DeclaringModule, GenericParameterType.Type, i))
 			.ToArray();
 
 		return new MemberReference(field.DeclaringType.MakeGenericInstanceType(typeArguments).ToTypeDefOrRef(), field.Name, field.Signature);

AssetRipper.CIL/ModuleDefinitionExtensions.cs

@@ -0,0 +1,94 @@
+using AsmResolver.DotNet;
+using AsmResolver.DotNet.Signatures;
+using AsmResolver.PE.DotNet.Metadata.Tables;
+using System.Diagnostics.CodeAnalysis;
+using System.Runtime.CompilerServices;
+
+namespace AssetRipper.CIL;
+
+public static class ModuleDefinitionExtensions
+{
+	public static bool TryGetTopLevelType(this ModuleDefinition module, string? @namespace, string? name, [NotNullWhen(true)] out TypeDefinition? type)
+	{
+		type = module.TopLevelTypes.FirstOrDefault(t => t.Namespace == @namespace && t.Name == name);
+		return type != null;
+	}
+
+	public static bool HasTopLevelType(this ModuleDefinition module, string? @namespace, string? name)
+	{
+		return module.TryGetTopLevelType(@namespace, name, out _);
+	}
+
+	public static TypeDefinition AddEmptyEnum(this ModuleDefinition module, string? @namespace, string? name, Visibility visibility, ElementType underlyingType)
+	{
+		CorLibTypeSignature underlyingTypeSignature = module.CorLibTypeFactory.FromElementType(underlyingType)
+			?? throw new ArgumentOutOfRangeException(nameof(underlyingType), underlyingType, null);
+
+		TypeReference baseType = new(module.CorLibTypeFactory.CorLibScope, "System", "Enum");
+		TypeDefinition type = new(@namespace, name, visibility.ToTypeAttributes() | TypeAttributes.Sealed, module.DefaultImporter.ImportType(baseType));
+		module.TopLevelTypes.Add(type);
+		AddEnumValue(type, underlyingTypeSignature);
+		return type;
+
+		static void AddEnumValue(TypeDefinition type, TypeSignature underlyingType)
+		{
+			FieldSignature fieldSignature = new FieldSignature(underlyingType);
+			FieldDefinition fieldDef = new FieldDefinition("value__", FieldAttributes.Public | FieldAttributes.SpecialName | FieldAttributes.RuntimeSpecialName, fieldSignature);
+			type.Fields.Add(fieldDef);
+		}
+	}
+
+	public static TypeDefinition AddExistingEnum<T>(this ModuleDefinition module) where T : struct, Enum
+	{
+		Type underlyingType = Enum.GetUnderlyingType(typeof(T));
+		bool isSigned = underlyingType == typeof(sbyte) || underlyingType == typeof(short) || underlyingType == typeof(int) || underlyingType == typeof(long);
+		CorLibTypeSignature underlyingTypeSignature = module.CorLibTypeFactory.FromType(underlyingType)
+			?? throw new InvalidOperationException($"Failed to get underlying type for {typeof(T)}");
+
+		TypeDefinition type = module.AddEmptyEnum(typeof(T).Namespace, typeof(T).Name, VisibilityExtensions.GetVisibility(typeof(T)), underlyingTypeSignature.ElementType);
+		foreach (T value in GetValues())
+		{
+			type.AddEnumField(value.ToString(), ToInt64(value));
+		}
+
+		if (typeof(T).CustomAttributes.Any(a => a.AttributeType is { Namespace: "System", Name: nameof(FlagsAttribute) }))
+		{
+			type.AddFlagsAttribute();
+		}
+
+		return type;
+
+		static IEnumerable<T> GetValues()
+		{
+#if NETSTANDARD
+			return Enum.GetValues(typeof(T)).Cast<T>();
+#else
+			return Enum.GetValues<T>();
+#endif
+		}
+
+		long ToInt64(T value)
+		{
+			if (Unsafe.SizeOf<T>() == sizeof(long))
+			{
+				return Unsafe.As<T, long>(ref value);
+			}
+			else if (Unsafe.SizeOf<T>() == sizeof(int))
+			{
+				return isSigned ? Unsafe.As<T, int>(ref value) : Unsafe.As<T, uint>(ref value);
+			}
+			else if (Unsafe.SizeOf<T>() == sizeof(short))
+			{
+				return isSigned ? Unsafe.As<T, short>(ref value) : Unsafe.As<T, ushort>(ref value);
+			}
+			else if (Unsafe.SizeOf<T>() == sizeof(byte))
+			{
+				return isSigned ? Unsafe.As<T, sbyte>(ref value) : Unsafe.As<T, byte>(ref value);
+			}
+			else
+			{
+				throw new NotSupportedException($"Unsupported enum underlying type {typeof(T)}");
+			}
+		}
+	}
+}

AssetRipper.CIL/TypeDefinitionExtensions.cs

@@ -7,14 +7,67 @@ namespace AssetRipper.CIL;
 
 public static class TypeDefinitionExtensions
 {
-	public static MethodDefinition AddMethod(this TypeDefinition type, string methodName, MethodAttributes methodAttributes, TypeSignature returnType)
+	public static FieldDefinition AddField(this TypeDefinition type, string? fieldName, TypeSignature fieldType, bool isStatic = false, Visibility visibility = Visibility.Public)
+	{
+		FieldAttributes fieldAttributes = visibility.ToFieldAttributes() | (isStatic ? FieldAttributes.Static : default);
+		FieldDefinition field = new FieldDefinition(fieldName, fieldAttributes, fieldType);
+		type.Fields.Add(field);
+		return field;
+	}
+
+	public static FieldDefinition AddConstantField(
+		this TypeDefinition type,
+		TypeSignature fieldType,
+		string fieldName,
+		Constant constant,
+		Visibility visibility = Visibility.Public)
+	{
+		FieldDefinition field = new FieldDefinition(
+			fieldName,
+			FieldAttributes.Static |
+			FieldAttributes.Literal |
+			FieldAttributes.HasDefault |
+			visibility.ToFieldAttributes(),
+			new FieldSignature(fieldType));
+		field.Constant = constant;
+		type.Fields.Add(field);
+		return field;
+	}
+
+	public static MethodDefinition AddMethod(this TypeDefinition type, string? methodName, MethodAttributes methodAttributes, TypeSignature returnType)
 	{
 		MethodDefinition method = CreateMethod(methodName, methodAttributes, returnType);
 		type.Methods.Add(method);
 		return method;
 	}
 
-	private static MethodDefinition CreateMethod(string methodName, MethodAttributes methodAttributes, TypeSignature returnType)
+	public static MethodDefinition AddConstructor(this TypeDefinition type, Visibility visibility = Visibility.Public)
+	{
+		MethodAttributes methodAttributes = visibility.ToMethodAttributes() | MethodAttributes.SpecialName | MethodAttributes.RuntimeSpecialName;
+		return type.AddMethod(".ctor", methodAttributes, type.DeclaringModule!.CorLibTypeFactory.Void);
+	}
+
+	public static FieldDefinition AddEnumField(this TypeDefinition type, string name, long value)
+	{
+		TypeSignature underlyingType = type.GetEnumUnderlyingType() ?? throw new ArgumentException("Type is not an enum", nameof(type));
+
+		return type.AddConstantField(type.ToTypeSignature(), name, FromValue(value, underlyingType.ElementType));
+
+		static Constant FromValue(long value, ElementType elementType) => elementType switch
+		{
+			ElementType.I1 => Constant.FromValue((sbyte)value),
+			ElementType.U1 => Constant.FromValue((byte)value),
+			ElementType.I2 => Constant.FromValue((short)value),
+			ElementType.U2 => Constant.FromValue((ushort)value),
+			ElementType.I4 => Constant.FromValue((int)value),
+			ElementType.U4 => Constant.FromValue((uint)value),
+			ElementType.I8 => Constant.FromValue(value),
+			ElementType.U8 => Constant.FromValue(unchecked((ulong)value)),
+			_ => throw new ArgumentOutOfRangeException(nameof(elementType)),
+		};
+	}
+
+	private static MethodDefinition CreateMethod(string? methodName, MethodAttributes methodAttributes, TypeSignature returnType)
 	{
 		bool isStatic = (methodAttributes & MethodAttributes.Static) != 0;
 		MethodSignature methodSignature = isStatic
@@ -22,12 +75,30 @@ public static class TypeDefinitionExtensions
 			: MethodSignature.CreateInstance(returnType);
 		MethodDefinition result = new MethodDefinition(methodName, methodAttributes, methodSignature);
 
-		result.CilMethodBody = new CilMethodBody(result);
+		result.CilMethodBody = new CilMethodBody();
 
 		return result;
 	}
 
-	public static bool IsStaticClass(this TypeDefinition type)
+	/// <summary>
+	/// Gets the default constructor for a <see cref="TypeDefinition"/>. Throws an exception if one doesn't exist.
+	/// </summary>
+	public static MethodDefinition GetDefaultConstructor(this TypeDefinition type)
+	{
+		return type.Methods.First(m => m.IsInstanceConstructor() && m.Parameters.Count == 0);
+	}
+
+	/// <summary>
+	/// Get all the instance constructors for a type
+	/// </summary>
+	/// <param name="type">The definition for the type</param>
+	/// <returns>All the instance constructors</returns>
+	public static IEnumerable<MethodDefinition> GetInstanceConstructors(this TypeDefinition type)
+	{
+		return type.Methods.Where(m => !m.IsStatic && m.IsConstructor);
+	}
+
+	public static bool IsStatic(this TypeDefinition type)
 	{
 		return type.IsSealed && type.IsAbstract;
 	}

AssetRipper.CIL/Visibility.cs

@@ -0,0 +1,84 @@
+using AsmResolver.PE.DotNet.Metadata.Tables;
+
+namespace AssetRipper.CIL;
+
+public enum Visibility
+{
+	Public,
+	Protected,
+	Internal,
+	ProtectedInternal,
+	Private,
+	PrivateProtected
+}
+public static class VisibilityExtensions
+{
+	public static MethodAttributes ToMethodAttributes(this Visibility visibility) => visibility switch
+	{
+		Visibility.Public => MethodAttributes.Public,
+		Visibility.Protected => MethodAttributes.Family,
+		Visibility.Internal => MethodAttributes.Assembly,
+		Visibility.ProtectedInternal => MethodAttributes.FamilyOrAssembly,
+		Visibility.Private => MethodAttributes.Private,
+		Visibility.PrivateProtected => MethodAttributes.FamilyAndAssembly,
+		_ => throw new ArgumentOutOfRangeException(nameof(visibility), visibility, null),
+	};
+
+	public static FieldAttributes ToFieldAttributes(this Visibility visibility) => visibility switch
+	{
+		Visibility.Public => FieldAttributes.Public,
+		Visibility.Protected => FieldAttributes.Family,
+		Visibility.Internal => FieldAttributes.Assembly,
+		Visibility.ProtectedInternal => FieldAttributes.FamilyOrAssembly,
+		Visibility.Private => FieldAttributes.Private,
+		Visibility.PrivateProtected => FieldAttributes.FamilyAndAssembly,
+		_ => throw new ArgumentOutOfRangeException(nameof(visibility), visibility, null),
+	};
+
+	public static TypeAttributes ToTypeAttributes(this Visibility visibility, bool nested = false) => nested
+		? visibility switch
+		{
+			Visibility.Public => TypeAttributes.NestedPublic,
+			Visibility.Protected => TypeAttributes.NestedFamily,
+			Visibility.Internal => TypeAttributes.NestedAssembly,
+			Visibility.ProtectedInternal => TypeAttributes.NestedFamilyOrAssembly,
+			Visibility.Private => TypeAttributes.NestedPrivate,
+			Visibility.PrivateProtected => TypeAttributes.NestedFamilyAndAssembly,
+			_ => throw new ArgumentOutOfRangeException(nameof(visibility), visibility, null),
+		}
+		: visibility switch
+		{
+			Visibility.Public => TypeAttributes.Public,
+			Visibility.Internal => TypeAttributes.NotPublic,
+			_ => throw new ArgumentOutOfRangeException(nameof(visibility), visibility, null),
+		};
+
+	internal static Visibility GetVisibility(Type type)
+	{
+		if (type.IsPublic || type.IsNestedPublic)
+		{
+			return Visibility.Public;
+		}
+		if (type.IsNestedFamily)
+		{
+			return Visibility.Protected;
+		}
+		if (type.IsNotPublic || type.IsNestedAssembly)
+		{
+			return Visibility.Internal;
+		}
+		if (type.IsNestedFamORAssem)
+		{
+			return Visibility.ProtectedInternal;
+		}
+		if (type.IsNestedPrivate)
+		{
+			return Visibility.Private;
+		}
+		if (type.IsNestedFamANDAssem)
+		{
+			return Visibility.PrivateProtected;
+		}
+		throw new ArgumentException($"Unknown visibility for type {type}", nameof(type));
+	}
+}

Directory.Build.props

@@ -2,13 +2,12 @@
 	<PropertyGroup>
 		<LangVersion>Latest</LangVersion>
 		<Nullable>enable</Nullable>
-		<IsAotCompatible>true</IsAotCompatible>
 		<CheckForOverflowUnderflow>true</CheckForOverflowUnderflow>
 		<PolySharpIncludeRuntimeSupportedAttributes>true</PolySharpIncludeRuntimeSupportedAttributes>
 
-		<Version>1.1.4</Version>
+		<Version>1.2.1</Version>
 		<AssemblyVersion>$(Version)</AssemblyVersion>
-		<Copyright>Copyright (c) 2024 ds5678</Copyright>
+		<Copyright>Copyright (c) 2025 ds5678</Copyright>
 		<Authors>ds5678</Authors>
 		<Company>AssetRipper</Company>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>