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Diffstat (limited to 'iosApp/iosApp/Shared/Resolver.swift')
-rw-r--r-- | iosApp/iosApp/Shared/Resolver.swift | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/iosApp/iosApp/Shared/Resolver.swift b/iosApp/iosApp/Shared/Resolver.swift new file mode 100644 index 0000000..3935405 --- /dev/null +++ b/iosApp/iosApp/Shared/Resolver.swift @@ -0,0 +1,45 @@ +/** + * TrackerMap + * Copyright (C) 2021-2022 Iván Ávalos <avalos@disroot.org>, Henoch Ojeda <imhenoch@protonmail.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +import Foundation +import shared + +// Source: https://www.kiloloco.com/articles/004-dependency-injection-via-property-wrappers/ +// Source: https://medium.com/swlh/c1f02f06cd51 +class Resolver { + + private var storage = [String: (Resolver) -> Injectable]() + + static let shared = Resolver() + private init() {} + + func add(_ type: Injectable.Type, factory: @escaping (Resolver) -> Injectable) { + let key = String(reflecting: type.self) + storage[key] = factory + } + + func resolve<T: Injectable>() -> T { + let key = String(reflecting: T.self) + + guard let injectable = storage[key]?(self) as? T else { + fatalError("\(key) has not been added as an injectable object.") + } + + return injectable + } + +} |