private static ControllerDescriptor GetDescriptor(Type controllerType)
{
ControllerDescriptor descriptor;
if (_controllerDescriptors.TryGetValue(controllerType, out descriptor)) {
return descriptor;
}
descriptor = new ControllerDescriptor();
Type actionResultType = typeof(ActionResult);
Type taskActionResultType = typeof(Task<ActionResult>);
BindingFlags bindingFlags = BindingFlags.Public | BindingFlags.Instance |
BindingFlags.FlattenHierarchy;
MethodInfo[] methods = controllerType.GetMethods(bindingFlags);
foreach (MethodInfo method in methods) {
ActionDescriptor action = null;
if (method.ReturnType.IsAssignableFrom(taskActionResultType)) {
action = new ActionDescriptor(method, /* async */ true);
}
else if (method.ReturnType.IsAssignableFrom(actionResultType)) {
action = new ActionDescriptor(method, /* async */ false);
}
else {
continue;
}
string actionName = method.Name;
if (descriptor._actions.ContainsKey(actionName)) {
throw new InvalidOperationException(controllerType.Name + " has a duplicate action named " + actionName);
}
descriptor._actions[actionName] = action;
}
_controllerDescriptors[controllerType] = descriptor;
return descriptor;
}
