Javier Cicchelli cb90b3730d [Libraries] Dependency (#6)
This PR contains the work that implements the Dependency service, which is used as a dependency injection mechanism in the application.

To give further details on what was done:
- [x] created the `Dependency` library into the **Libraries** package;
- [x] defined the `DependencyKey` protocol;
- [x] implemented the `DependencyService` service;
- [x] implemented the `Dependency` property wrapper.

Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Reviewed-on: rock-n-code/deep-linking-assignment#6
2023-04-11 00:41:07 +00:00

32 lines
967 B
Swift

//
// Dependency.swift
// Dependency
//
// Created by Javier Cicchelli on 11/04/2023.
// Copyright © 2023 Röck+Cöde. All rights reserved.
//
/// This property wrapper provides a direct connection to the `DependencyService` service.
@propertyWrapper
public struct Dependency<D> {
// MARK: Properties
private let keyPath: WritableKeyPath<DependencyService, D>
/// This property allows direct read/write access to a defined dependency attached to a selected key path.
public var wrappedValue: D {
get { DependencyService[keyPath] }
set { DependencyService[keyPath] = newValue }
}
// MARK: Initialisers
/// Initialise the property wrapper by setting a key path to a defined dependency.
/// - Parameter keyPath: A key path to a defined dependency in the `DependencyService` service.
public init(_ keyPath: WritableKeyPath<DependencyService, D>) {
self.keyPath = keyPath
}
}