private static void MethodIntercept(ILGenerator ilGenerator, MethodInfo methodInfo, IInterceptor[] interceptors, LocalBuilder[] local,
bool[] boolean, Action<ILGenerator> method)
{
var methodInterceptors = interceptors.GetMethodInterceptor();
if (!methodInterceptors.Any())
{
method(ilGenerator);
return;
}
var invocationType = InternalDynamicTypeProvider.CreateType<IMethodInvocation>();
var returnParameterType = InternalDynamicTypeProvider.CreateType<IReturnParameter>();
var parameterType = InternalDynamicTypeProvider.CreateType<IParameter>();
var setParameters = invocationType.GetMethod("set_Parameters");
var setParameterValue = parameterType.GetMethod("set_Value");
var getParameterValue = parameterType.GetMethod("get_Value");
var setParameterName = parameterType.GetMethod("set_Name");
var setParameterInfo = parameterType.GetMethod("set_ParameterInfo");
var getParameterName = typeof(ParameterInfo).GetMethod("get_Name");
var getCurrentParameter = typeof(InterceptorExtends).GetMethod("GetCurrentParameter");
var setReturnParameter = invocationType.GetMethod("set_ReturnParameter");
var getReturnValue = returnParameterType.GetMethod("get_Value");
var setReturnType = returnParameterType.GetMethod("set_ReturnType");
var setReturnValue = returnParameterType.GetMethod("set_Value");
var returnParameterLocal = ilGenerator.DeclareLocal(returnParameterType);
var getReturnType = typeof(MethodInfo).GetMethod("get_ReturnType");
var setInterceptedMethod = invocationType.GetMethod("set_InterceptedMethod");
var setInterceptedType = invocationType.GetMethod("set_InterceptedType");
var setInterceptedInstance = invocationType.GetMethod("set_InterceptedInstance");
var getExecutedHandled = invocationType.GetMethod("get_ExecutedHandled");
var getGetMethodInterceptor = typeof(InterceptorExtends).GetMethod("GetMethodInterceptor");
var getGetExecutedMethodInterceptor = typeof(InterceptorExtends).GetMethod("GetExecutedMethodInterceptor");
var onMethodExecuting = typeof(IMethodInterceptor).GetMethod("OnMethodExecuting");
var onMethodExecuted = typeof(IMethodInterceptor).GetMethod("OnMethodExecuted");
var interceptorLocal = ilGenerator.DeclareLocal(typeof(IMethodInterceptor[]));
var executedInterceptorLocal = ilGenerator.DeclareLocal(typeof(IMethodInterceptor[]));
var parametersLocal = ilGenerator.DeclareLocal(typeof(IParameter[]));
var invocationLocal = ilGenerator.DeclareLocal(invocationType);
var endLable = ilGenerator.DefineLabel();
ilGenerator.LoadLocal(local[0]).Call(getGetMethodInterceptor).StoreLocal(interceptorLocal);
ilGenerator.LoadLocal(local[0]).Call(getGetExecutedMethodInterceptor).StoreLocal(executedInterceptorLocal);
ilGenerator.New(invocationType.GetConstructor(Type.EmptyTypes)).StoreLocal(invocationLocal);
ilGenerator.LoadLocal(invocationLocal).LoadLocal(local[1]).Callvirt(setInterceptedMethod);
ilGenerator.LoadLocal(invocationLocal).LoadLocal(local[2]).Callvirt(setInterceptedType);
ilGenerator.LoadLocal(invocationLocal).This().Callvirt(setInterceptedInstance);
ilGenerator.New(returnParameterType.GetConstructor(Type.EmptyTypes)).StoreLocal(returnParameterLocal);
if (boolean[0]) ilGenerator.LoadLocal(returnParameterLocal).LoadLocal(local[1]).Callvirt(getReturnType).Callvirt(setReturnType);
else ilGenerator.LoadLocal(returnParameterLocal).Typeof(typeof(void)).Callvirt(setReturnType);
ilGenerator.LoadLocal(invocationLocal).LoadLocal(returnParameterLocal).Callvirt(setReturnParameter);
ilGenerator.NewArray(typeof(IParameter), methodInfo.GetParameters().Length).StoreLocal(parametersLocal);
ilGenerator.ForEach(methodInfo.GetParameterTypes(), (il, arg, i) =>
{
var argLocal = ilGenerator.DeclareLocal(parameterType);
ilGenerator.New(parameterType.GetConstructor(Type.EmptyTypes)).StoreLocal(argLocal);
ilGenerator.LoadLocal(argLocal).LoadArgument(i + 1).Box(arg).Callvirt(setParameterValue);
ilGenerator.LoadLocal(argLocal).LoadLocal(local[1]).LoadInt(i).Call(getCurrentParameter).Callvirt(setParameterInfo);
ilGenerator.LoadLocal(argLocal).LoadLocal(local[1]).LoadInt(i).Call(getCurrentParameter).Callvirt(getParameterName).Callvirt(setParameterName);
ilGenerator.LoadLocal(parametersLocal).LoadInt(i).LoadLocal(argLocal).SetArrayItemRef();
});
ilGenerator.LoadLocal(invocationLocal).LoadLocal(parametersLocal).Callvirt(setParameters);
ilGenerator.ForEach(methodInterceptors, (_, interceptor, index) =>
_.LoadLocal(interceptorLocal).LoadArrayItem(index).LoadLocal(invocationLocal)
.Callvirt(onMethodExecuting).LoadLocal(invocationLocal).Callvirt(getExecutedHandled).False(endLable));
ilGenerator.ForEach(methodInfo.GetParameterTypes(), (il, arg, i) =>
{
ilGenerator.LoadLocal(parametersLocal).LoadArrayItem(i).Callvirt(getParameterValue).UnBox(arg).StroeArgument(i + 1);
});
method(ilGenerator);
if (boolean[0]) ilGenerator.LoadLocal(returnParameterLocal).LoadLocal(local[3]).Callvirt(setReturnValue);
ilGenerator.ForEach(methodInterceptors.OrderBy(i => i.ExecutedOrder), (_, interceptor, index) =>
_.LoadLocal(executedInterceptorLocal).LoadArrayItem(index).LoadLocal(invocationLocal).
Callvirt(onMethodExecuted).LoadLocal(invocationLocal).Callvirt(getExecutedHandled).False(endLable));
ilGenerator.MarkLabelFor(endLable);
if (boolean[0]) ilGenerator.LoadLocal(returnParameterLocal).Callvirt(getReturnValue).StoreLocal(local[3]);
}
