支持v31

Author: Perfare

Il2CppDumper/Il2Cpp/Metadata.cs

@@ -52,7 +52,7 @@ public Metadata(Stream stream) : base(stream)
             {
                 throw new InvalidDataException("ERROR: Metadata file supplied is not valid metadata file.");
             }
-            if (version < 16 || version > 29)
+            if (version < 16 || version > 31)
             {
                 throw new NotSupportedException($"ERROR: Metadata file supplied is not a supported version[{version}].");
             }

Il2CppDumper/Il2Cpp/MetadataClass.cs

@@ -237,6 +237,8 @@ public class Il2CppMethodDefinition
         public uint nameIndex;
         public int declaringType;
         public int returnType;
+        [Version(Min = 31)]
+        public int returnParameterToken;
         public int parameterStart;
         [Version(Max = 24)]
         public int customAttributeIndex;

Il2CppDumper/Outputs/StructGenerator.cs

@@ -418,6 +418,7 @@ public void WriteScript(string outputDir)
                     break;
                 case 29:
                 case 29.1:
+                case 31:
                     sb.Append(HeaderConstants.HeaderV29);
                     break;
                 default:

Il2CppDumper/Utils/SectionHelper.cs

@@ -380,6 +380,10 @@ private ulong FindCodeRegistration2019(List<SearchSection> secs)
                                         il2Cpp.Position = il2Cpp.MapVATR(refva3 - il2Cpp.PointerSize);
                                         if (il2Cpp.ReadIntPtr() == imageCount)
                                         {
+                                            if (il2Cpp.Version >= 31)
+                                            {
+                                                return refva3 - il2Cpp.PointerSize * 16;
+                                            }
                                             if (il2Cpp.Version >= 29)
                                             {
                                                 return refva3 - il2Cpp.PointerSize * 14;