🌲
.Muukii

To get compile, Ignore warning of binding to associatedtype

Updated
Apr 16, 2020 1:53 PM
Created
Apr 16, 2020 1:50 PM
Tags
Swift
Keywords

Compilable

protocol StateType {
}
protocol StoreType {
  associatedtype State: StateType
}
class ConcreteStore: StoreType {
  struct State: StateType {}
}
protocol BaseProtocol {
  associatedtype Store: StoreType
  associatedtype Scope
  var store: Store { get }
  var scope: KeyPath<Store.State, Scope> { get }
}
protocol ExtendedProtocol: BaseProtocol {
  associatedtype Store
  var store: Store { get }
}
extension ExtendedProtocol {
  typealias Scope = Store.State
  var scope: KeyPath<Store.State, Scope> { \Scope.self }
}
class Object: ExtendedProtocol {
  var store: ConcreteStore { fatalError() }
}

This cause compile error

protocol StateType {
}
protocol StoreType {
  associatedtype State: StateType
}
class ConcreteStore: StoreType {
  struct State: StateType {}
}
protocol BaseProtocol {
  associatedtype Store: StoreType
  associatedtype Scope
  var store: Store { get }
  var scope: KeyPath<Store.State, Scope> { get }
}
protocol ExtendedProtocol: BaseProtocol where Scope == Store.State {
  associatedtype Store
  var store: Store { get }
}
extension ExtendedProtocol {
  var scope: KeyPath<Store.State, Scope> { \Scope.self }
}
class Object: ExtendedProtocol {
  var store: ConcreteStore { fatalError() }
}