68 lines
1.2 KiB
Swift
68 lines
1.2 KiB
Swift
//
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// DictionaryInitializable.swift
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// Lottie
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//
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// Created by Marcelo Fabri on 5/5/22.
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//
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import Foundation
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// MARK: - InitializableError
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enum InitializableError: Error {
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case invalidInput
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}
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// MARK: - DictionaryInitializable
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protocol DictionaryInitializable {
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init(dictionary: [String: Any]) throws
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}
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// MARK: - AnyInitializable
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protocol AnyInitializable {
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init(value: Any) throws
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}
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extension Dictionary {
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@_disfavoredOverload
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func value<T, KeyType: RawRepresentable>(for key: KeyType) throws -> T where KeyType.RawValue == Key {
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guard let value = self[key.rawValue] as? T else {
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throw InitializableError.invalidInput
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}
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return value
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}
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func value<T: AnyInitializable, KeyType: RawRepresentable>(for key: KeyType) throws -> T where KeyType.RawValue == Key {
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if let value = self[key.rawValue] as? T {
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return value
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}
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if let value = self[key.rawValue] {
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return try T(value: value)
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}
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throw InitializableError.invalidInput
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}
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}
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// MARK: - Array + AnyInitializable
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extension Array: AnyInitializable where Element == Double {
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init(value: Any) throws {
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guard let array = value as? [Double] else {
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throw InitializableError.invalidInput
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}
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self = array
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}
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}
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