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//
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// RouteComposer
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// ContextTransformerBox.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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final class ContextTransformerBox<T: ContextTransformer>: AnyContextTransformer {
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let transformer: T
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init(_ transformer: T) {
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self.transformer = transformer
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}
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func transform<Context>(_ context: AnyContext) throws -> Context {
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let typedContext: T.SourceContext = try context.value()
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guard let transformedContext = try transformer.transform(typedContext) as? Context else {
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throw RoutingError.typeMismatch(type: type(of: T.TargetContext.self),
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expectedType: Context.self,
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.init("Failed to transform \(String(describing: T.TargetContext.self)) to \(String(describing: Context.self))."))
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}
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return transformedContext
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}
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}
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