private static Func <T, TRq, IDependencyResolver, Task> CreateExecuteActionFunction <TRq>(MethodInfo method)
{
var returnType = method.ReturnType;
if (returnType == typeof(void) || returnType == typeof(Task))
{
return(ApiHelpers.CreateExecuteActionFunctionVoid <TRq>(method));
}
else
{
if (returnType.IsGenericType && returnType.GetGenericTypeDefinition() == typeof(Task <>))
{
returnType = returnType.GetGenericArguments()[0];
}
//public static Func<T, TRq, IDependencyResolver, Task<TReturn>> CreateExecuteActionFunction<TRq, TReturn>(MethodInfo method)
var executeFunction = Expression.Constant(
typeof(ApiHelpers).GetRuntimeMethodExt("CreateExecuteActionFunction", p => true).MakeGenericMethod(typeof(TRq), returnType).Invoke(null, new[] { method }),
typeof(Func <, , ,>).MakeGenericType(typeof(T), typeof(TRq), typeof(IDependencyResolver), typeof(Task <>).MakeGenericType(returnType))
);
//public static Func<TRq, TReturn, IDependencyResolver> CreateWriteResultLambda<TRq, TReturn>()
var sendResultFunction = Expression.Constant(
typeof(ApiHelpers).GetRuntimeMethodExt("CreateWriteResultLambda", p => true).MakeGenericMethod(typeof(TRq), returnType).Invoke(null, new object[] { }),
typeof(Func <, , ,>).MakeGenericType(typeof(TRq), returnType, typeof(IDependencyResolver), typeof(Task))
);
//public static async Task ExecuteActionAndSendResult<TRq, TReturn>(T controller, TRq ctx, IDependencyResolver resolver, Func<T, TRq, IDependencyResolver, Task<TReturn>> executeControllerActionFunction, Action<TRq, TReturn, IDependencyResolver> sendResultAction)
var wrapperMethod = typeof(ApiHelpers).GetRuntimeMethodExt("ExecuteActionAndSendResult", p => true).MakeGenericMethod(typeof(TRq), returnType);
var controller = Expression.Parameter(typeof(T), "controller");
var ctx = Expression.Parameter(typeof(TRq), "ctx");
var resolver = Expression.Parameter(typeof(IDependencyResolver), "resolver");
return(Expression.Lambda <Func <T, TRq, IDependencyResolver, Task> >(Expression.Call(wrapperMethod, controller, ctx, resolver, executeFunction, sendResultFunction), controller, ctx, resolver).Compile());
}
}
