public static EventBrokerResolvedType ResolveType(IMemberMap<EventInfo> memberMap, TypeBuilder typeBuilder)
{
Type[] @params = null;
Type delegateType = null;
Type[] delegateParameters = null;
var @event = memberMap.ContractMember;
var declaringType = memberMap.ContractType;
var invokeMethod = @event.GetInvokeMethod();
var invokeReturnType = invokeMethod.ReturnType;
var eventBrokerResolvedType = new EventBrokerResolvedType(@event) {
DecalringType = declaringType
};
if (invokeMethod.GetDelegateParams(out @params, out delegateParameters)) {
delegateType = @params.GetDelegateType(true);
eventBrokerResolvedType.EventInterceptionContractArgs = @event.ToEventArgumentContract(@params);
eventBrokerResolvedType.EventInterceptionArgs = declaringType.MakeGenericFunctionAspectArgsEvent(@params);
eventBrokerResolvedType.EventBrokerBaseClassType = declaringType.MakeGenericEventBrokerBaseClassFunctionBinding(@params);
eventBrokerResolvedType.EventBrokerInvokeDelegateType = typeof(Func<,>).MakeGenericType(new[] { eventBrokerResolvedType.EventInterceptionContractArgs, invokeReturnType });
}
else {
delegateType = delegateParameters.GetDelegateType(false);
eventBrokerResolvedType.EventInterceptionContractArgs = @event.ToEventArgumentContract(delegateParameters);
eventBrokerResolvedType.EventInterceptionArgs = declaringType.MakeGenericActionAspectArgsEvent(delegateParameters);
eventBrokerResolvedType.EventBrokerBaseClassType = declaringType.MakeGenericEventBrokerBaseClassActionType(delegateParameters);
eventBrokerResolvedType.EventBrokerInvokeDelegateType = typeof(Action<>).MakeGenericType(new[] { eventBrokerResolvedType.EventInterceptionContractArgs });
}
eventBrokerResolvedType.Arguments = delegateParameters;
eventBrokerResolvedType.EventBrokerFieldType = typeof(IEventBroker<>).MakeGenericType(delegateType);
return eventBrokerResolvedType;
}
private Type WeaveEventBrokerType(EventBrokerResolvedType eventBrokerResolvedType)
{
var name = "EventBrokerType_{0}".Fmt(Interlocked.Increment(ref eventBrokersTypeCounter)).ToUniqueName();
var eventBrokerTypeBuilder = eventBrokerResolvedType.EventBrokerBaseClassType.DefineType(name, attributes: TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.BeforeFieldInit);
WeaveConstructor(eventBrokerTypeBuilder, eventBrokerResolvedType);
interceptMethod = WeaveInterceptMethod(eventBrokerTypeBuilder, eventBrokerResolvedType);
WeaveSubscribeImpl(eventBrokerTypeBuilder, eventBrokerResolvedType);
WeaveUnsubscribeImpl(eventBrokerTypeBuilder, eventBrokerResolvedType);
return(eventBrokerTypeBuilder.CreateType());
}
private Type WeaveEventBrokerType(EventBrokerResolvedType eventBrokerResolvedType)
{
var name = "EventBrokerType_{0}".Fmt(Interlocked.Increment(ref eventBrokersTypeCounter)).ToUniqueName();
var eventBrokerTypeBuilder = eventBrokerResolvedType.EventBrokerBaseClassType.DefineType(name, attributes: TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.BeforeFieldInit);
WeaveConstructor(eventBrokerTypeBuilder, eventBrokerResolvedType);
interceptMethod = WeaveInterceptMethod(eventBrokerTypeBuilder, eventBrokerResolvedType);
WeaveSubscribeImpl(eventBrokerTypeBuilder, eventBrokerResolvedType);
WeaveUnsubscribeImpl(eventBrokerTypeBuilder, eventBrokerResolvedType);
return eventBrokerTypeBuilder.CreateType();
}
public EventBrokerFieldTypeDefinition(EventInfo @event, EventBrokerResolvedType eventBrokerResolvedType, TypeBuilder typeBuilder, Type eventBrokerGeneratedType)
{
string fieldName = null;
Event = @event;
EventBrokerType = eventBrokerGeneratedType;
InvokeMethodName = "Invoke{0}".Fmt(@event.Name);
EventInterceptionArgs = eventBrokerResolvedType.EventInterceptionArgs;
EventBrokerDelegateType = eventBrokerResolvedType.EventBrokerInvokeDelegateType;
EventInterceptionContractArgs = eventBrokerResolvedType.EventInterceptionContractArgs;
fieldName = "EventBroker_{0}".Fmt(Interlocked.Increment(ref eventBrokersCounter)).ToUniqueName();
fieldBuilderDefinition = new FieldBuilderDefinition(eventBrokerResolvedType.EventBrokerFieldType, typeBuilder, fieldName, fieldAttributes);
}
public EventBrokerFieldTypeDefinition(EventInfo @event, EventBrokerResolvedType eventBrokerResolvedType, TypeBuilder typeBuilder, Type eventBrokerGeneratedType)
{
string fieldName = null;
Event = @event;
EventBrokerType = eventBrokerGeneratedType;
InvokeMethodName = "Invoke{0}".Fmt(@event.Name);
EventInterceptionArgs = eventBrokerResolvedType.EventInterceptionArgs;
EventBrokerDelegateType = eventBrokerResolvedType.EventBrokerInvokeDelegateType;
EventInterceptionContractArgs = eventBrokerResolvedType.EventInterceptionContractArgs;
fieldName = "EventBroker_{0}".Fmt(Interlocked.Increment(ref eventBrokersCounter)).ToUniqueName();
fieldBuilderDefinition = new FieldBuilderDefinition(eventBrokerResolvedType.EventBrokerFieldType, typeBuilder, fieldName, fieldAttributes);
}
private MethodBuilder WeaveInterceptMethod(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType)
{
var invokeMethod = eventBrokerResolvedType.EventBrokerInvokeDelegateType.GetInvokeMethod();
var interceptMethod = typeBuilder.DefineMethod("Intercept", interceptMethodAttrs, invokeMethod.ReturnType, eventBrokerResolvedType.Arguments);
var ilGenerator = interceptMethod.GetILGenerator();
var onEventFiredMethod = eventBrokerResolvedType.EventBrokerBaseClassType.GetMethod("OnEventFired", BindingFlags.NonPublic | BindingFlags.Instance);
ilGenerator.EmitLoadArg(0);
eventBrokerResolvedType.Arguments.ForEach(1, (arg, i) => ilGenerator.EmitLoadArg(i));
ilGenerator.Emit(OpCodes.Call, onEventFiredMethod);
ilGenerator.Emit(OpCodes.Ret);
return(interceptMethod);
}
private void WeaveConstructor(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType)
{
ConstructorBuilder ctor = null;
ILGenerator ilGenerator = null;
var ctorArgs = new[] { eventBrokerResolvedType.DecalringType, typeof(EventInfo), eventBrokerResolvedType.EventBrokerInvokeDelegateType };
var baseCtor = eventBrokerResolvedType.EventBrokerBaseClassType.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, Type.DefaultBinder, ctorArgs, null);
ctor = typeBuilder.DefineConstructor(ctorAttrs, CallingConventions.Standard | CallingConventions.HasThis, ctorArgs);
ilGenerator = ctor.GetILGenerator();
ilGenerator.EmitLoadArg(0);
ctorArgs.ForEach(1, (arg, i) => ilGenerator.EmitLoadArg(i));
ilGenerator.Emit(OpCodes.Call, baseCtor);
ilGenerator.Emit(OpCodes.Ret);
}
private void WeaveConstructor(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType)
{
ConstructorBuilder ctor = null;
ILGenerator ilGenerator = null;
var ctorArgs = new[] { eventBrokerResolvedType.DecalringType, typeof(EventInfo), eventBrokerResolvedType.EventBrokerInvokeDelegateType };
var baseCtor = eventBrokerResolvedType.EventBrokerBaseClassType.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, Type.DefaultBinder, ctorArgs, null);
ctor = typeBuilder.DefineConstructor(ctorAttrs, CallingConventions.Standard | CallingConventions.HasThis, ctorArgs);
ilGenerator = ctor.GetILGenerator();
ilGenerator.EmitLoadArg(0);
ctorArgs.ForEach(1, (arg, i) => ilGenerator.EmitLoadArg(i));
ilGenerator.Emit(OpCodes.Call, baseCtor);
ilGenerator.Emit(OpCodes.Ret);
}
private void WeaveSubscriptionMethod(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType, MethodInfo eventHandlerMethod, string methodName)
{
var instanceField = eventBrokerResolvedType.EventBrokerBaseClassType.GetField("instance", BindingFlags.NonPublic | BindingFlags.Instance);
var subscribeImplMethod = typeBuilder.DefineMethod(methodName, subscribtionsMethodsAttrs, typeof(void), Type.EmptyTypes);
var eventHanlderCtor = eventBrokerResolvedType.Event.EventHandlerType.GetConstructor(new[] { typeof(object), typeof(IntPtr) });
var ilGenerator = subscribeImplMethod.GetILGenerator();
ilGenerator.EmitLoadArg(0);
ilGenerator.Emit(OpCodes.Ldfld, instanceField);
ilGenerator.EmitLoadArg(0);
ilGenerator.Emit(OpCodes.Ldftn, interceptMethod);
ilGenerator.Emit(OpCodes.Newobj, eventHanlderCtor);
ilGenerator.Emit(OpCodes.Callvirt, eventHandlerMethod);
ilGenerator.Emit(OpCodes.Ret);
}
public static EventBrokerResolvedType ResolveType(IMemberMap <EventInfo> memberMap, TypeBuilder typeBuilder)
{
Type[] @params = null;
Type delegateType = null;
Type[] delegateParameters = null;
var @event = memberMap.ContractMember;
var declaringType = memberMap.ContractType;
var invokeMethod = @event.GetInvokeMethod();
var invokeReturnType = invokeMethod.ReturnType;
var eventBrokerResolvedType = new EventBrokerResolvedType(@event)
{
DecalringType = declaringType
};
if (invokeMethod.GetDelegateParams(out @params, out delegateParameters))
{
delegateType = @params.GetDelegateType(true);
eventBrokerResolvedType.EventInterceptionContractArgs = @event.ToEventArgumentContract(@params);
eventBrokerResolvedType.EventInterceptionArgs = declaringType.MakeGenericFunctionAspectArgsEvent(@params);
eventBrokerResolvedType.EventBrokerBaseClassType = declaringType.MakeGenericEventBrokerBaseClassFunctionBinding(@params);
eventBrokerResolvedType.EventBrokerInvokeDelegateType = typeof(Func <,>).MakeGenericType(new[] { eventBrokerResolvedType.EventInterceptionContractArgs, invokeReturnType });
}
else
{
delegateType = delegateParameters.GetDelegateType(false);
eventBrokerResolvedType.EventInterceptionContractArgs = @event.ToEventArgumentContract(delegateParameters);
eventBrokerResolvedType.EventInterceptionArgs = declaringType.MakeGenericActionAspectArgsEvent(delegateParameters);
eventBrokerResolvedType.EventBrokerBaseClassType = declaringType.MakeGenericEventBrokerBaseClassActionType(delegateParameters);
eventBrokerResolvedType.EventBrokerInvokeDelegateType = typeof(Action <>).MakeGenericType(new[] { eventBrokerResolvedType.EventInterceptionContractArgs });
}
eventBrokerResolvedType.Arguments = delegateParameters;
eventBrokerResolvedType.EventBrokerFieldType = typeof(IEventBroker <>).MakeGenericType(delegateType);
return(eventBrokerResolvedType);
}
private void WeaveUnsubscribeImpl(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType)
{
WeaveSubscriptionMethod(typeBuilder, eventBrokerResolvedType, eventBrokerResolvedType.Event.GetRemoveMethod(), "UnsubscribeImpl");
}
private MethodBuilder WeaveInterceptMethod(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType)
{
var invokeMethod = eventBrokerResolvedType.EventBrokerInvokeDelegateType.GetInvokeMethod();
var interceptMethod = typeBuilder.DefineMethod("Intercept", interceptMethodAttrs, invokeMethod.ReturnType, eventBrokerResolvedType.Arguments);
var ilGenerator = interceptMethod.GetILGenerator();
var onEventFiredMethod = eventBrokerResolvedType.EventBrokerBaseClassType.GetMethod("OnEventFired", BindingFlags.NonPublic | BindingFlags.Instance);
ilGenerator.EmitLoadArg(0);
eventBrokerResolvedType.Arguments.ForEach(1, (arg, i) => ilGenerator.EmitLoadArg(i));
ilGenerator.Emit(OpCodes.Call, onEventFiredMethod);
ilGenerator.Emit(OpCodes.Ret);
return interceptMethod;
}
private void WeaveUnsubscribeImpl(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType)
{
WeaveSubscriptionMethod(typeBuilder, eventBrokerResolvedType, eventBrokerResolvedType.Event.GetRemoveMethod(), "UnsubscribeImpl");
}
private void WeaveSubscriptionMethod(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType, MethodInfo eventHandlerMethod, string methodName)
{
var instanceField = eventBrokerResolvedType.EventBrokerBaseClassType.GetField("instance", BindingFlags.NonPublic | BindingFlags.Instance);
var subscribeImplMethod = typeBuilder.DefineMethod(methodName, subscribtionsMethodsAttrs, typeof(void), Type.EmptyTypes);
var eventHanlderCtor = eventBrokerResolvedType.Event.EventHandlerType.GetConstructor(new[] { typeof(object), typeof(IntPtr) });
var ilGenerator = subscribeImplMethod.GetILGenerator();
ilGenerator.EmitLoadArg(0);
ilGenerator.Emit(OpCodes.Ldfld, instanceField);
ilGenerator.EmitLoadArg(0);
ilGenerator.Emit(OpCodes.Ldftn, interceptMethod);
ilGenerator.Emit(OpCodes.Newobj, eventHanlderCtor);
ilGenerator.Emit(OpCodes.Callvirt, eventHandlerMethod);
ilGenerator.Emit(OpCodes.Ret);
}