/// <summary>
/// Defines the given class by installing a proxy, that will forward native calls to the corresponding instance.
/// </summary>
/// <param name = "classGenerator">The class generator.</param>
/// <param name = "type">The type.</param>
public static void DefineClass (ClassGenerator classGenerator, Type type)
{
if (type == null) {
throw new ArgumentNullException ("type", Resources.CannotDefineObjectiveCClassFromNullType);
}
// Check if the class is already mapped
if (Class.IsMapped (type)) {
return;
}
// Extract class name from attributes
String className = ExtractClassName (type);
// Check for class existence
Class cls = Class.Get (className);
if (cls != null) {
// Associate the type to the class
cls.WrapperType = type.TypeHandle.Value;
// Check to see if the class must be intercepted
if (NeedInterception (type)) {
if (Logger.InfoEnabled) {
Logger.Info ("Bridge", "Intercepting 'dealloc' messages for class " + className);
}
InterceptDeallocFor (cls);
}
return;
}
else if(IsNative(type)) {
if (Logger.DebugEnabled) {
Logger.Debug("Bridge", "Skipping definition for nonexistent native class " + className);
}
return;
}
// Objects with an Id base type do not have a superclass
String superClassName = null;
if (typeof(Id) != type.BaseType) {
// Extract class name from attributes
superClassName = ExtractSuperClassName (type);
// Get the superclass
Class superCls = Class.Get (superClassName);
if (superCls == null) {
throw new ObjectiveCException (String.Format (CultureInfo.CurrentCulture, Resources.CannotDefineClassBecauseSuperclassDoesNotExists, type, superClassName));
}
}
if (Logger.DebugEnabled) {
Logger.Debug ("Bridge", "Defining class " + type + " <-> " + className + " : " + superClassName ?? "Id");
}
// Collects the informations needed for class generation
VariableTuple[] variableTuples = CollectInstanceVariables (type);
MethodTuple[] instanceMethods = CollectInstanceMethods (type);
MethodTuple[] classMethods = CollectStaticMethods (type);
// Generates the class proxy with the associated structures
Type proxyType = classGenerator.DefineClassProxy (type, instanceMethods, classMethods);
// Create the peer native class
String[] ivarNames = Array.ConvertAll (variableTuples, tuple => tuple.Name);
IntPtr[] ivarTypes = Array.ConvertAll (variableTuples, tuple => tuple.Type.TypeHandle.Value);
cls = CreateClass (className, superClassName, ivarNames, ivarTypes);
// Add instance methods
#if USE_CLOSURES
foreach (MethodTuple tuple in instanceMethods)
{
MethodInfo methodInfo = proxyType.GetMethod(tuple.ProxyMethodInfo.Name);
IntPtr handle = methodInfo.MethodHandle.Value;
AddMethod(cls.pointer, false, handle, tuple.Selector, ObjectiveCEncoding.GetSignature(methodInfo));
}
#else
String[] methodNames = Array.ConvertAll (instanceMethods, tuple => tuple.Selector);
IntPtr[] methodImplementations = Array.ConvertAll (instanceMethods, tuple => tuple.GetFunction (proxyType));
String[] methodEncoding = Array.ConvertAll (instanceMethods, tuple => ObjectiveCEncoding.GetSignature (tuple.MethodInfo));
AddMethods (cls.pointer, false, methodNames, methodImplementations, methodEncoding);
#endif
// Add class methods
#if USE_CLOSURES
foreach (MethodTuple tuple in classMethods)
{
MethodInfo methodInfo = proxyType.GetMethod(tuple.ProxyMethodInfo.Name);
IntPtr handle = methodInfo.MethodHandle.Value;
AddMethod(cls.pointer, true, handle, tuple.Selector, ObjectiveCEncoding.GetSignature(methodInfo, 0));
}
#else
methodNames = Array.ConvertAll (classMethods, tuple => tuple.Selector);
methodImplementations = Array.ConvertAll (classMethods, tuple => tuple.GetFunction (proxyType));
methodEncoding = Array.ConvertAll (classMethods, tuple => ObjectiveCEncoding.GetSignature (tuple.MethodInfo, 0));
AddMethods (cls.pointer, true, methodNames, methodImplementations, methodEncoding);
#endif
}
private void TestClass(Type classType, Type referenceType, bool is64Bits)
{
counter++;
DynamicAssembly assembly = new DynamicAssembly(DynamicAssemblyHelper.GetAssemblyName(this, counter), "MyModule");
MethodTuple[] instanceMethods = Bridge.CollectInstanceMethods(classType);
Assert.IsTrue(Array.TrueForAll(instanceMethods, m => !m.MethodInfo.IsStatic));
MethodTuple[] staticMethods = Bridge.CollectStaticMethods(classType);
Assert.IsTrue(Array.TrueForAll(staticMethods, m => m.MethodInfo.IsStatic));
ClassGenerator generator = new ClassGenerator(assembly, is64Bits);
Type proxyType = generator.DefineClassProxy(classType, instanceMethods, staticMethods);
try
{
assembly.Save();
Type type = assembly.GetType(proxyType.FullName);
DynamicAssemblyHelper.Compare(referenceType, type);
}
catch (Exception ex)
{
Assert.Fail("Type retrieval failed with " + ex);
}
}
