Remove prior experimentation with property wrappers -- feature was not baked when that experimentation was done.

2026-03-30 11:18:38 -07:00 · 2019-07-25 07:49:17 -07:00
parent c7b97567a9
commit 0144a2ee80
2 changed files with 0 additions and 179 deletions
@@ -1,115 +0,0 @@
-//
-//  PropertyWrappers.swift
-//  
-//
-//  Created by Mathew Polzin on 6/20/19.
-//
-
-
-// MARK: - Transformed
-@propertyWrapper
-public struct Transformed<Transformer: JSONAPI.Transformer> {
-
-    public typealias RawValue = Transformer.From
-    public typealias Value = Transformer.To
-
-    private var _value: Value?
-
-    public var wrappedValue: Value {
-        get {
-            guard let ret = _value else {
-                fatalError("Attribute read from before initialization.")
-            }
-            return ret
-        }
-        set {
-            _value = newValue
-        }
-    }
-
-    public init(initialValue: Value, _ transformer: Transformer.Type) {
-        self._value = initialValue
-    }
-
-    public init(_ transformer: Transformer.Type) {
-        self._value = nil
-    }
-
-    public init(rawValue: RawValue, _ transformer: Transformer.Type) throws {
-        self._value = try Transformer.transform(rawValue)
-    }
-}
-
-extension Transformed: Decodable where Transformer.From: Decodable {
-    public init(from decoder: Decoder) throws {
-        let container = try decoder.singleValueContainer()
-
-        let rawVal = try container.decode(Transformer.From.self)
-
-        _value = try Transformer.transform(rawVal)
-    }
-}
-
-extension Transformed: Encodable where Transformer: ReversibleTransformer, Transformer.From: Encodable {
-    public func encode(to encoder: Encoder) throws {
-        var container = encoder.singleValueContainer()
-
-        guard let value = _value else {
-            fatalError("Attribute encoded before initialization.")
-        }
-
-        try container.encode(Transformer.reverse(value))
-    }
-}
-
-// MARK: - Nullable
-
-public protocol _Optional {
-    static var nilValue: Self { get }
-    var isNilValue: Bool { get }
-}
-
-extension Optional: _Optional {
-    public static var nilValue: Self {
-        return .none
-    }
-
-    public var isNilValue: Bool { return self == nil }
-}
-
-protocol _Nullable {}
-
-@propertyWrapper
-public struct Nullable<T: Decodable>: Decodable, _Optional, _Nullable {
-    public var wrappedValue: T?
-
-    public init(from decoder: Decoder) throws {
-        let container = try decoder.singleValueContainer()
-
-        if container.decodeNil() {
-            wrappedValue = nil
-            return
-        }
-
-        wrappedValue = try container.decode(T.self)
-    }
-
-    public init(initialValue: T? = nil) {
-        wrappedValue = initialValue
-    }
-
-    public static var nilValue: Self {
-        return .init()
-    }
-
-    public var isNilValue: Bool {
-        return wrappedValue == nil
-    }
-}
-
-extension Nullable: Encodable where T: Encodable {
-    public func encode(to encoder: Encoder) throws {
-        var container = encoder.singleValueContainer()
-        try container.encode(wrappedValue)
-    }
-}