// Create type model
public TypeModel(Il2CppInspector package)
{
Package = package;
TypesByDefinitionIndex = new TypeInfo[package.TypeDefinitions.Length];
TypesByReferenceIndex = new TypeInfo[package.TypeReferences.Count];
GenericParameterTypes = new TypeInfo[package.GenericParameters.Length];
MethodsByDefinitionIndex = new MethodBase[package.Methods.Length];
MethodInvokers = new MethodInvoker[package.MethodInvokePointers.Length];
// Recursively create hierarchy of assemblies and types from TypeDefs
// No code that executes here can access any type through a TypeRef (ie. via TypesByReferenceIndex)
for (var image = 0; image < package.Images.Length; image++)
{
Assemblies.Add(new Assembly(this, image));
}
// Create and reference types from TypeRefs
// Note that you can't resolve any TypeRefs until all the TypeDefs have been processed
for (int typeRefIndex = 0; typeRefIndex < package.TypeReferences.Count; typeRefIndex++)
{
if (TypesByReferenceIndex[typeRefIndex] != null)
{
/* type already generated - probably by forward reference through GetTypeFromVirtualAddress */
continue;
}
var typeRef = Package.TypeReferences[typeRefIndex];
var referencedType = resolveTypeReference(typeRef);
TypesByReferenceIndex[typeRefIndex] = referencedType;
}
// Create types and methods from MethodSpec (which incorporates TypeSpec in IL2CPP)
foreach (var spec in Package.MethodSpecs)
{
var methodDefinition = MethodsByDefinitionIndex[spec.methodDefinitionIndex];
var declaringType = methodDefinition.DeclaringType;
// Concrete instance of a generic class
// If the class index is not specified, we will later create a generic method in a non-generic class
if (spec.classIndexIndex != -1)
{
var genericInstance = Package.GenericInstances[spec.classIndexIndex];
var genericArguments = ResolveGenericArguments(genericInstance);
declaringType = declaringType.MakeGenericType(genericArguments);
}
MethodBase method;
if (methodDefinition is ConstructorInfo)
{
method = declaringType.GetConstructorByDefinition((ConstructorInfo)methodDefinition);
}
else
{
method = declaringType.GetMethodByDefinition((MethodInfo)methodDefinition);
}
if (spec.methodIndexIndex != -1)
{
var genericInstance = Package.GenericInstances[spec.methodIndexIndex];
var genericArguments = ResolveGenericArguments(genericInstance);
method = method.MakeGenericMethod(genericArguments);
}
method.VirtualAddress = Package.GetGenericMethodPointer(spec);
GenericMethods[spec] = method;
}
// Generate a list of all namespaces used
Namespaces = Assemblies.SelectMany(x => x.DefinedTypes).GroupBy(t => t.Namespace).Select(n => n.Key).Distinct().ToList();
// Find all custom attribute generators (populate AttributesByIndices) (use ToList() to force evaluation)
var allAssemblyAttributes = Assemblies.Select(a => a.CustomAttributes).ToList();
var allTypeAttributes = TypesByDefinitionIndex.Select(t => t.CustomAttributes).ToList();
var allEventAttributes = TypesByDefinitionIndex.SelectMany(t => t.DeclaredEvents).Select(e => e.CustomAttributes).ToList();
var allFieldAttributes = TypesByDefinitionIndex.SelectMany(t => t.DeclaredFields).Select(f => f.CustomAttributes).ToList();
var allPropertyAttributes = TypesByDefinitionIndex.SelectMany(t => t.DeclaredProperties).Select(p => p.CustomAttributes).ToList();
var allMethodAttributes = MethodsByDefinitionIndex.Select(m => m.CustomAttributes).ToList();
var allParameterAttributes = MethodsByDefinitionIndex.SelectMany(m => m.DeclaredParameters).Select(p => p.CustomAttributes).ToList();
// Create method invokers (one per signature, in invoker index order)
foreach (var method in MethodsByDefinitionIndex)
{
var index = package.GetInvokerIndex(method.DeclaringType.Assembly.ModuleDefinition, method.Definition);
if (index != -1)
{
if (MethodInvokers[index] == null)
{
MethodInvokers[index] = new MethodInvoker(method, index);
}
method.Invoker = MethodInvokers[index];
}
}
// TODO: Some invokers are not initialized or missing, need to find out why
// Create method invokers sourced from generic method invoker indices
foreach (var spec in GenericMethods.Keys)
{
if (package.GenericMethodInvokerIndices.TryGetValue(spec, out var index))
{
if (MethodInvokers[index] == null)
{
MethodInvokers[index] = new MethodInvoker(GenericMethods[spec], index);
}
GenericMethods[spec].Invoker = MethodInvokers[index];
}
}
}
// Create type model
public Il2CppModel(Il2CppInspector package)
{
Package = package;
TypesByDefinitionIndex = new TypeInfo[package.TypeDefinitions.Length];
TypesByReferenceIndex = new TypeInfo[package.TypeReferences.Count];
MethodsByDefinitionIndex = new MethodBase[package.Methods.Length];
MethodInvokers = new MethodInvoker[package.MethodInvokePointers.Length];
// Recursively create hierarchy of assemblies and types from TypeDefs
// No code that executes here can access any type through a TypeRef (ie. via TypesByReferenceIndex)
for (var image = 0; image < package.Images.Length; image++)
{
Assemblies.Add(new Assembly(this, image));
}
// Create and reference types from TypeRefs
// Note that you can't resolve any TypeRefs until all the TypeDefs have been processed
for (int typeRefIndex = 0; typeRefIndex < package.TypeReferences.Count; typeRefIndex++)
{
var typeRef = Package.TypeReferences[typeRefIndex];
var referencedType = resolveTypeReference(typeRef);
TypesByReferenceIndex[typeRefIndex] = referencedType;
}
// Create types and methods from MethodSpec (which incorporates TypeSpec in IL2CPP)
foreach (var spec in Package.MethodSpecs)
{
TypeInfo declaringType;
// Concrete instance of a generic class
// If the class index is not specified, we will later create a generic method in a non-generic class
if (spec.classIndexIndex != -1)
{
if (!TypesByMethodSpecClassIndex.ContainsKey(spec.classIndexIndex))
{
TypesByMethodSpecClassIndex.Add(spec.classIndexIndex, new TypeInfo(this, spec));
}
declaringType = TypesByMethodSpecClassIndex[spec.classIndexIndex];
}
else
{
declaringType = MethodsByDefinitionIndex[spec.methodDefinitionIndex].DeclaringType;
}
// Concrete instance of a generic method
if (spec.methodIndexIndex != -1)
{
// Method or constructor
var concreteMethod = new MethodInfo(this, spec, declaringType);
if (concreteMethod.Name == ConstructorInfo.ConstructorName || concreteMethod.Name == ConstructorInfo.TypeConstructorName)
{
GenericMethods.Add(spec, new ConstructorInfo(this, spec, declaringType));
}
else
{
GenericMethods.Add(spec, concreteMethod);
}
}
}
// Find all custom attribute generators (populate AttributesByIndices) (use ToList() to force evaluation)
var allAssemblyAttributes = Assemblies.Select(a => a.CustomAttributes).ToList();
var allTypeAttributes = TypesByDefinitionIndex.Select(t => t.CustomAttributes).ToList();
var allEventAttributes = TypesByDefinitionIndex.SelectMany(t => t.DeclaredEvents).Select(e => e.CustomAttributes).ToList();
var allFieldAttributes = TypesByDefinitionIndex.SelectMany(t => t.DeclaredFields).Select(f => f.CustomAttributes).ToList();
var allPropertyAttributes = TypesByDefinitionIndex.SelectMany(t => t.DeclaredProperties).Select(p => p.CustomAttributes).ToList();
var allMethodAttributes = MethodsByDefinitionIndex.Select(m => m.CustomAttributes).ToList();
var allParameterAttributes = MethodsByDefinitionIndex.SelectMany(m => m.DeclaredParameters).Select(p => p.CustomAttributes).ToList();
// Create method invokers (one per signature, in invoker index order)
foreach (var method in MethodsByDefinitionIndex)
{
var index = package.GetInvokerIndex(method.DeclaringType.Assembly.ModuleDefinition, method.Definition);
if (index != -1)
{
if (MethodInvokers[index] == null)
{
MethodInvokers[index] = new MethodInvoker(method, index);
}
method.Invoker = MethodInvokers[index];
}
}
// TODO: Some invokers are not initialized or missing, need to find out why
// Create method invokers sourced from generic method invoker indices
foreach (var spec in GenericMethods.Keys)
{
if (package.GenericMethodInvokerIndices.TryGetValue(spec, out var index))
{
if (MethodInvokers[index] == null)
{
MethodInvokers[index] = new MethodInvoker(GenericMethods[spec], index);
}
GenericMethods[spec].Invoker = MethodInvokers[index];
}
}
}
