private static ReduceWithoutActionParameterHandler CreateStaticReducerWithoutActionParameter(
DiscoveredReducerMethod discoveredReducerMethod)
=>
(ReduceWithoutActionParameterHandler)
Delegate.CreateDelegate(
type: typeof(ReduceWithoutActionParameterHandler),
method: discoveredReducerMethod.MethodInfo);
private static ReduceWithoutActionParameterHandler CreateReducerWithoutActionParameter(
object reducerHostInstance,
DiscoveredReducerMethod discoveredReducerMethod)
=>
reducerHostInstance == null
? CreateStaticReducerWithoutActionParameter(discoveredReducerMethod)
: CreateInstanceReducerWithoutActionParameter(reducerHostInstance, discoveredReducerMethod);
public ReducerWrapper(object reducerHostInstance, DiscoveredReducerMethod discoveredReducerMethod)
{
Reduce =
discoveredReducerMethod.RequiresActionParameterInMethod
? CreateReducerWithActionParameter(reducerHostInstance, discoveredReducerMethod)
: WrapReducerWithoutActionParameter(reducerHostInstance, discoveredReducerMethod);
}
private static ReduceWithoutActionParameterHandler CreateInstanceReducerWithoutActionParameter(
object reducerHostInstance,
DiscoveredReducerMethod discoveredReducerMethod)
=>
(ReduceWithoutActionParameterHandler)
Delegate.CreateDelegate(
type: typeof(ReduceWithoutActionParameterHandler),
firstArgument: reducerHostInstance,
method: discoveredReducerMethod.MethodInfo);
private static ReduceWithActionParameterHandler WrapReducerWithoutActionParameter(
object reducerHostInstance,
DiscoveredReducerMethod discoveredReducerMethod)
{
ReduceWithoutActionParameterHandler handler = CreateReducerWithoutActionParameter(
reducerHostInstance,
discoveredReducerMethod);
return(new ReduceWithActionParameterHandler((state, action) => handler.Invoke(state)));
}
internal static object Create(IServiceProvider serviceProvider, DiscoveredReducerMethod discoveredReducerMethod)
{
Type stateType = discoveredReducerMethod.StateType;
Type actionType = discoveredReducerMethod.ActionType;
Type hostClassType = discoveredReducerMethod.HostClassType;
object reducerHostInstance = discoveredReducerMethod.MethodInfo.IsStatic
? null
: serviceProvider.GetService(hostClassType);
Type classGenericType = typeof(ReducerWrapper <,>).MakeGenericType(stateType, actionType);
var result = Activator.CreateInstance(
classGenericType,
reducerHostInstance,
discoveredReducerMethod);
return(result);
}