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//
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// RouteComposer
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// Destination.swift
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// https://github.com/ekazaev/route-composer
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//
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// Created by Eugene Kazaev in 2018-2022.
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// Distributed under the MIT license.
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//
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// Become a sponsor:
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// https://github.com/sponsors/ekazaev
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//
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import Foundation
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import UIKit
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/// `AnyDestination` represents a generic `Destination` that contains the screen configuration for any type
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/// of `UIViewController` and the context of any type.
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public typealias AnyDestination = Destination<UIViewController, Any?>
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/// `Destination` instance represents both final screen configuration and the data to provide. It is useful when
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/// there is a need to wrap both values into a single DTO value.
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public struct Destination<VC: UIViewController, C> {
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// MARK: Properties
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/// Final configuration.
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public let step: DestinationStep<VC, C>
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/// Data to be provided to the configuration.
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public let context: C
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// MARK: Methods
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/// Constructor
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///
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/// - Parameters:
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/// - step: `DestinationStep` instance containing the navigation configuration.
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/// - context: `Context` instance to be provided to the configuration.
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public init(to step: DestinationStep<VC, C>, with context: C) {
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self.step = step
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self.context = context
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}
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/// Transforms into generic representation without information about types.
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public func unwrapped() -> AnyDestination {
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AnyDestination(to: step.unsafelyRewrapped(), with: context)
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}
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}
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// MARK: Helper methods where the Context is Any?
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public extension Destination where C == Any? {
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/// Constructor
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///
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/// - Parameters:
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/// - step: `DestinationStep` instance containing the navigation configuration.
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init(to step: DestinationStep<VC, C>) {
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self.step = step
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self.context = nil
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}
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}
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// MARK: Helper methods where the Context is Void
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public extension Destination where C == Void {
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/// Constructor
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///
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/// - Parameters:
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/// - step: `DestinationStep` instance containing the navigation configuration.
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init(to step: DestinationStep<VC, C>) {
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self.step = step
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self.context = ()
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}
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}
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