chizui/Il2CppInspectorRedux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Model: Re-implement the handling of Il2CppType

Browse Source
This commit is contained in:
Katy Coe
2019-10-31 17:40:33 +01:00
parent edbf9dc2fa
commit 3560661f9c
8 changed files with 85 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
Il2CppInspector/Il2CppModel.cs
View File

@@ -16,25 +16,32 @@ namespace Il2CppInspector.Reflection
public List<Assembly> Assemblies { get; } = new List<Assembly>();
// List of all types ordered by their TypeDefinitionIndex
public TypeInfo[] TypesByIndex { get; }
public TypeInfo[] TypesByDefinitionIndex { get; }
// List of all type usages ordered by their type usage index
public TypeInfo[] TypesByUsageIndex { get; }
// List of type usages that are initialized via pointers in the image
public Dictionary<ulong, TypeInfo> TypesByVirtualAddress { get; } = new Dictionary<ulong, TypeInfo>();
// List of all types
public Il2CppModel(Il2CppInspector package) {
Package = package;
TypesByIndex = new TypeInfo[package.TypeDefinitions.Length];
TypesByDefinitionIndex = new TypeInfo[package.TypeDefinitions.Length];
TypesByUsageIndex = new TypeInfo[package.TypeUsages.Count];
// Create Assembly objects from Il2Cpp package
for (var image = 0; image < package.Images.Length; image++)
Assemblies.Add(new Assembly(this, image));
}
// Get or generate a type from its IL2CPP binary type usage reference
// (field, return type, generic type parameter etc.)
public TypeInfo GetType(Il2CppType pType, MemberTypes memberType = MemberTypes.All) {
switch (pType.type) {
private TypeInfo getNewTypeUsage(Il2CppType usage, MemberTypes memberType) {
switch (usage.type) {
case Il2CppTypeEnum.IL2CPP_TYPE_CLASS:
case Il2CppTypeEnum.IL2CPP_TYPE_VALUETYPE:
// Classes defined in the metadata
return TypesByIndex[(int) pType.datapoint];
return TypesByDefinitionIndex[usage.datapoint];
case Il2CppTypeEnum.IL2CPP_TYPE_GENERICINST:
case Il2CppTypeEnum.IL2CPP_TYPE_ARRAY:
@@ -43,20 +50,49 @@ namespace Il2CppInspector.Reflection
case Il2CppTypeEnum.IL2CPP_TYPE_VAR:
case Il2CppTypeEnum.IL2CPP_TYPE_MVAR:
// Everything that requires special handling
return new TypeInfo(this, pType, memberType);
return new TypeInfo(this, usage, memberType);
default:
return GetTypeFromEnum(pType.type);
// Primitive types
return GetTypeFromTypeEnum(usage.type);
}
}
// Get or generate a type from its IL2CPP binary type usage reference
// (field, return type, generic type parameter etc.)
public TypeInfo GetTypeFromUsage(int typeUsageIndex, MemberTypes memberType = MemberTypes.All) {
// Already generated type previously?
if (TypesByUsageIndex[typeUsageIndex] != null)
return TypesByUsageIndex[typeUsageIndex];
var usage = Package.TypeUsages[typeUsageIndex];
var newUsage = getNewTypeUsage(usage, memberType);
TypesByUsageIndex[typeUsageIndex] = newUsage;
return newUsage;
}
// Basic primitive types
public TypeInfo GetTypeFromEnum(Il2CppTypeEnum t) {
public TypeInfo GetTypeFromTypeEnum(Il2CppTypeEnum t) {
if ((int)t >= Il2CppConstants.FullNameTypeString.Count)
return null;
var fqn = Il2CppConstants.FullNameTypeString[(int) t];
return TypesByIndex.First(x => x.FullName == fqn);
return TypesByDefinitionIndex.First(x => x.FullName == fqn);
}
// Type from a virtual address pointer
// These are always nested types frorm usages within another type
public TypeInfo GetTypeFromVirtualAddress(ulong ptr) {
if (TypesByVirtualAddress.ContainsKey(ptr))
return TypesByVirtualAddress[ptr];
var type = Package.BinaryImage.ReadMappedObject<Il2CppType>(ptr);
var newUsage = getNewTypeUsage(type, MemberTypes.NestedType);
TypesByVirtualAddress.Add(ptr, newUsage);
return newUsage;
}
}
}