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73 lines
2.5 KiB
73 lines
2.5 KiB
// |
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// CodableTransform.swift |
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// ObjectMapper |
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// |
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// Created by Jari Kalinainen on 10/10/2018. |
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// |
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// The MIT License (MIT) |
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// |
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// Copyright (c) 2014-2018 Tristan Himmelman |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy |
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// of this software and associated documentation files (the "Software"), to deal |
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// in the Software without restriction, including without limitation the rights |
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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// copies of the Software, and to permit persons to whom the Software is |
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// furnished to do so, subject to the following conditions: |
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// |
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// The above copyright notice and this permission notice shall be included in |
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// all copies or substantial portions of the Software. |
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// |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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// THE SOFTWARE. |
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import Foundation |
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/// Transforms JSON dictionary to Codable type T and back |
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open class CodableTransform<T: Codable>: TransformType { |
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public typealias Object = T |
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public typealias JSON = Any |
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public init() {} |
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open func transformFromJSON(_ value: Any?) -> Object? { |
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var _data: Data? = nil |
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switch value { |
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case let dict as [String : Any]: |
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_data = try? JSONSerialization.data(withJSONObject: dict, options: []) |
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case let array as [[String : Any]]: |
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_data = try? JSONSerialization.data(withJSONObject: array, options: []) |
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default: |
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_data = nil |
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} |
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guard let data = _data else { return nil } |
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do { |
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let decoder = JSONDecoder() |
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let item = try decoder.decode(T.self, from: data) |
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return item |
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} catch { |
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return nil |
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} |
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} |
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open func transformToJSON(_ value: T?) -> JSON? { |
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guard let item = value else { |
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return nil |
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} |
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do { |
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let encoder = JSONEncoder() |
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let data = try encoder.encode(item) |
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let dictionary = try JSONSerialization.jsonObject(with: data, options: .allowFragments) |
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return dictionary |
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} catch { |
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return nil |
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} |
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} |
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}
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