private object GetLazyAutomaticFactoryRequest()

in src/React.Core/TinyIoC/TinyIoC.cs [3829:3907]
38 lines of code
8 McCabe index (conditional complexity)

        private object GetLazyAutomaticFactoryRequest(Type type)
        {
            if (!type.IsGenericType())
                return null;

            Type genericType = type.GetGenericTypeDefinition();
            //#if NETFX_CORE
            //			Type[] genericArguments = type.GetTypeInfo().GenericTypeArguments.ToArray();
            //#else
            Type[] genericArguments = type.GetGenericArguments();
            //#endif

            // Just a func
            if (genericType == typeof(Func<>))
            {
                Type returnType = genericArguments[0];

                //#if NETFX_CORE
                //				MethodInfo resolveMethod = typeof(TinyIoCContainer).GetTypeInfo().GetDeclaredMethods("Resolve").First(mi => !mi.GetParameters().Any());
                //#else
                MethodInfo resolveMethod = typeof(TinyIoCContainer).GetMethod("Resolve", new Type[] { });
                //#endif
                resolveMethod = resolveMethod.MakeGenericMethod(returnType);

                var resolveCall = Expression.Call(Expression.Constant(this), resolveMethod);

                var resolveLambda = Expression.Lambda(resolveCall).Compile();

                return resolveLambda;
            }

            // 2 parameter func with string as first parameter (name)
            if ((genericType == typeof(Func<,>)) && (genericArguments[0] == typeof(string)))
            {
                Type returnType = genericArguments[1];

                //#if NETFX_CORE
                //				MethodInfo resolveMethod = typeof(TinyIoCContainer).GetTypeInfo().GetDeclaredMethods("Resolve").First(mi => mi.GetParameters().Length == 1 && mi.GetParameters()[0].GetType() == typeof(String));
                //#else
                MethodInfo resolveMethod = typeof(TinyIoCContainer).GetMethod("Resolve", new Type[] { typeof(String) });
                //#endif
                resolveMethod = resolveMethod.MakeGenericMethod(returnType);

                ParameterExpression[] resolveParameters = new ParameterExpression[] { Expression.Parameter(typeof(String), "name") };
                var resolveCall = Expression.Call(Expression.Constant(this), resolveMethod, resolveParameters);

                var resolveLambda = Expression.Lambda(resolveCall, resolveParameters).Compile();

                return resolveLambda;
            }

            // 3 parameter func with string as first parameter (name) and IDictionary<string, object> as second (parameters)
            //#if NETFX_CORE
            //			if ((genericType == typeof(Func<,,>) && type.GenericTypeArguments[0] == typeof(string) && type.GenericTypeArguments[1] == typeof(IDictionary<string, object>)))
            //#else
            if ((genericType == typeof(Func<,,>) && type.GetGenericArguments()[0] == typeof(string) && type.GetGenericArguments()[1] == typeof(IDictionary<string, object>)))
            //#endif
            {
                Type returnType = genericArguments[2];

                var name = Expression.Parameter(typeof(string), "name");
                var parameters = Expression.Parameter(typeof(IDictionary<string, object>), "parameters");

                //#if NETFX_CORE
                //				MethodInfo resolveMethod = typeof(TinyIoCContainer).GetTypeInfo().GetDeclaredMethods("Resolve").First(mi => mi.GetParameters().Length == 2 && mi.GetParameters()[0].GetType() == typeof(String) && mi.GetParameters()[1].GetType() == typeof(NamedParameterOverloads));
                //#else
                MethodInfo resolveMethod = typeof(TinyIoCContainer).GetMethod("Resolve", new Type[] { typeof(String), typeof(NamedParameterOverloads) });
                //#endif
                resolveMethod = resolveMethod.MakeGenericMethod(returnType);

                var resolveCall = Expression.Call(Expression.Constant(this), resolveMethod, name, Expression.Call(typeof(NamedParameterOverloads), "FromIDictionary", null, parameters));

                var resolveLambda = Expression.Lambda(resolveCall, name, parameters).Compile();

                return resolveLambda;
            }

            throw new TinyIoCResolutionException(type);
        }