private IServiceCallSite TryCreateExact(ServiceDescriptor descriptor, Type serviceType, CallSiteChain callSiteChain)
{
if (serviceType == descriptor.ServiceType)
{
IServiceCallSite callSite;
if (descriptor.ImplementationInstance != null)
{
callSite = new ConstantCallSite(descriptor.ServiceType, descriptor.ImplementationInstance);
}
else if (descriptor.ImplementationFactory != null)
{
callSite = new FactoryCallSite(descriptor.ServiceType, descriptor.ImplementationFactory);
}
else if (descriptor.ImplementationType != null)
{
callSite = CreateConstructorCallSite(descriptor.ServiceType, descriptor.ImplementationType, callSiteChain);
}
else
{
throw new InvalidOperationException("Invalid service descriptor");
}
return(ApplyLifetime(callSite, descriptor, descriptor.Lifetime));
}
return(null);
}
protected override object VisitFactory(FactoryCallSite factoryCallSite, ServiceProviderEngineScope scope)
{
var obj = factoryCallSite.Factory(scope);
var interceptors = InterceptorRuntimeCreate.CreatedInterceptors;
var implementName = obj.GetType().FullName;
if (interceptors != null && interceptors.Count > 0 &&
factoryCallSite.ServiceType.IsInterface &&
InterceptorRuntimeCreate.CanIntercept(implementName))
{
Castle.DynamicProxy.ProxyGenerator generator = new Castle.DynamicProxy.ProxyGenerator();
obj = generator.CreateInterfaceProxyWithTarget(factoryCallSite.ServiceType,
obj,
interceptors.ToArray());
}
return(obj);
}
protected override Expression VisitFactory(FactoryCallSite factoryCallSite, ILEmitResolverBuilderContext argument)
{
if (argument.Factories == null)
{
argument.Factories = new List<Func<IServiceProvider, object>>();
}
// this.Factories[i](ProviderScope)
argument.Generator.Emit(OpCodes.Ldarg_0);
argument.Generator.Emit(OpCodes.Ldfld, FactoriesField);
argument.Generator.Emit(OpCodes.Ldc_I4, argument.Factories.Count);
argument.Generator.Emit(OpCodes.Ldelem, typeof(Func<IServiceProvider, object>));
argument.Generator.Emit(OpCodes.Ldarg_1);
argument.Generator.Emit(OpCodes.Call, ExpressionResolverBuilder.InvokeFactoryMethodInfo);
argument.Factories.Add(factoryCallSite.Factory);
return null;
}
protected override ILEmitCallSiteAnalysisResult VisitFactory(FactoryCallSite factoryCallSite, object argument) => new ILEmitCallSiteAnalysisResult(FactoryILSize);
protected override object VisitFactory(FactoryCallSite factoryCallSite, CallSiteFormatterContext argument)
{
argument.WriteProperty("method", factoryCallSite.Factory.Method);
return(null);
}
protected override Expression VisitFactory(FactoryCallSite factoryCallSite, CallSiteExpressionBuilderContext context)
{
return(Expression.Invoke(Expression.Constant(factoryCallSite.Factory), context.ScopeParameter));
}
protected abstract TResult VisitFactory(FactoryCallSite factoryCallSite, TArgument argument);
protected override Expression BuildFactory(FactoryCallSite callSite)
{
return(Expression.Invoke(Expression.Constant(callSite.Factory), Parameter));
}
protected abstract TResult BuildFactory(FactoryCallSite factoryCallSite);
protected override Type VisitFactory(FactoryCallSite factoryCallSite, CallSiteValidatorState state) => null;
protected override object BuildFactory(FactoryCallSite factoryCallSite)
{
return(factoryCallSite.Factory(_serviceProvider));
}
