holster.kt

//Main Idea: Rather than declaring subcomponents you declare Scopes which contain modules
//Holster is a processor which will generate a subcomponent for each scope and 
//allows you to get a reference to each component through a generated Locator. 
//Difference with Dagger Android is that we create the child/parent component 
//relationship in the scope annotation rather than depending on @ContributesAndroidInjector/HasInjector

@MyActivityScope(ActivityModule::class, child=MyViewScope::class) 
class MyActivity{ 
  @inject aDep:ADep 
  onCreate(){ inject()) }
}

@MyViewScope(ViewModule::class)
class MyView{
 init{
    inject()
 }
}

var Activity.component
 get() = Injector.lazyGetComponentFor(this) 

var View.component
 get() = Injector.lazyGetComponentFor(this)

fun Activity.inject(){
  component.inject(this)
}

fun View.inject(){
  view.component().inject(this); 
}


@Generated
//creates/gets a subcomponent for each instances from a 
//generated map of component factories
fun Injector.lazyGetComponentFor(injectRoot:Activity)