41 lines
939 B
Swift
41 lines
939 B
Swift
import Foundation
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protocol StoreInterface {
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static func register<T>(_ type: T.Type, factory: @autoclosure @escaping () -> T)
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static func resolve<T>(_ type: T.Type) -> T?
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}
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final class Store: StoreInterface {
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private static var factories: [ObjectIdentifier: () -> Any] = [:]
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private static var cache: [ObjectIdentifier: Any] = [:]
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static func register<T>(_ type: T.Type, factory: @autoclosure @escaping () -> T) {
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let identifier = ObjectIdentifier(type)
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factories[identifier] = factory
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}
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static func resolve<T>(_ type: T.Type) -> T? {
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let identifier = ObjectIdentifier(type)
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if let dependency = cache[identifier] {
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return dependency as? T
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} else {
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let dependency = factories[identifier]?() as? T
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if let dependency {
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cache[identifier] = dependency
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}
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return dependency
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}
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}
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}
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private final class WeakRef<T: AnyObject> {
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weak var value: T?
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init(value: T) {
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self.value = value
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}
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}
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