/// <summary>
/// Finds all components in the assembly, and provides
/// each occurrence of [Autowired] with an instance.
/// </summary>
/// <param name="runnable">Runnable class</param>
internal static void InjectDependencies(ISnowRunnable runnable)
{
var type = runnable.GetType();
ReadyInstance(type, runnable);
var assembly = type?.Assembly;
if (assembly is null)
{
return;
}
((IEnumerable <Type>)assembly.GetTypes())
.Where(t => t.CustomAttributes.Any(ca => typeof(ComponentAttribute).IsAssignableFrom(ca.AttributeType)))
.ForEach(t => ReadyInstance(t, Container.Retrieve(t)));
// Also fill components in dependent assemblies.
foreach (var assemblyName in assembly.GetReferencedAssemblies())
{
var dependency = Assembly.Load(assemblyName);
((IEnumerable <Type>)dependency.GetTypes())
.Where(t => t.CustomAttributes.Any(ca => typeof(ComponentAttribute).IsAssignableFrom(ca.AttributeType)))
.ForEach(t => ReadyInstance(t, Container.Retrieve(t)));
}
}
/// <summary>
/// Finds all classes marked as [Component] in the
/// assembly, and stores them in the Container.
/// </summary>
/// <param name="runnable">Runnable class</param>
internal static void InstanceComponents(ISnowRunnable runnable)
{
var type = runnable.GetType();
var assembly = type?.Assembly;
if (assembly is null)
{
return;
}
Container.AllComponents = assembly.GetTypes()
.Where(t => t.CustomAttributes.Any(ca => typeof(ComponentAttribute).IsAssignableFrom(ca.AttributeType)))
.ToList();
// Also check referenced assemblies.
foreach (var assemblyName in assembly.GetReferencedAssemblies())
{
var dependency = Assembly.Load(assemblyName);
Container.AllComponents = Container.AllComponents.Concat(
dependency.GetTypes()
.Where(t => t.CustomAttributes.Any(ca => typeof(ComponentAttribute).IsAssignableFrom(ca.AttributeType)))
).ToList();
}
foreach (var component in Container.AllComponents)
{
InstanceComponent(component);
}
}
/// <summary>
/// Runs a Snow app with optional parameters.
/// </summary>
/// <param name="runnable">Snow runnable class</param>
/// <param name="args">Parameters</param>
public static void Run(ISnowRunnable runnable, string[]?args = null)
{
SnowReflection.InstanceComponents(runnable);
SnowReflection.InjectDependencies(runnable);
runnable.Run(args);
}
