Merge pull request #129 from NeedleInAJayStack/feature/drop-type-codable-requirement

Drops Encodable requirement on GraphQL types

Author: NeedleInAJayStack

Sources/Graphiti/Connection/Connection.swift

@@ -2,7 +2,7 @@ import Foundation
 import GraphQL
 import NIO
 
-public struct Connection<Node: Encodable>: Encodable {
+public struct Connection<Node> {
     public let edges: [Edge<Node>]
     public let pageInfo: PageInfo
 }
@@ -19,7 +19,7 @@ public extension Connection where Node: Identifiable, Node.ID: LosslessStringCon
 }
 
 @available(macOS 10.15, macCatalyst 13.0, iOS 13.0, tvOS 13, watchOS 6.0, *) // For Identifiable
-public extension EventLoopFuture where Value: Sequence, Value.Element: Encodable & Identifiable,
+public extension EventLoopFuture where Value: Sequence, Value.Element: Identifiable,
 Value.Element.ID: LosslessStringConvertible {
     func connection(from arguments: Paginatable) -> EventLoopFuture<Connection<Value.Element>> {
         connection(from: arguments, makeCursor: Connection<Value.Element>.cursor)
@@ -36,7 +36,7 @@ Value.Element.ID: LosslessStringConvertible {
     }
 }
 
-public extension EventLoopFuture where Value: Sequence, Value.Element: Encodable {
+public extension EventLoopFuture where Value: Sequence {
     func connection(
         from arguments: Paginatable,
         makeCursor: @escaping (Value.Element) throws -> String
@@ -66,7 +66,7 @@ public extension EventLoopFuture where Value: Sequence, Value.Element: Encodable
 }
 
 @available(macOS 10.15, macCatalyst 13.0, iOS 13.0, tvOS 13, watchOS 6.0, *) // For Identifiable
-public extension Sequence where Element: Encodable & Identifiable,
+public extension Sequence where Element: Identifiable,
 Element.ID: LosslessStringConvertible {
     func connection(from arguments: Paginatable) throws -> Connection<Element> {
         try connection(from: arguments, makeCursor: Connection<Element>.cursor)
@@ -81,7 +81,7 @@ Element.ID: LosslessStringConvertible {
     }
 }
 
-public extension Sequence where Element: Encodable {
+public extension Sequence {
     func connection(
         from arguments: Paginatable,
         makeCursor: @escaping (Element) throws -> String
@@ -120,7 +120,7 @@ func connect<Node>(
     to elements: [Node],
     arguments: PaginationArguments,
     makeCursor: @escaping (Node) throws -> String
-) throws -> Connection<Node> where Node: Encodable {
+) throws -> Connection<Node> {
     let edges = try elements.map { element in
         // swiftformat:disable:next hoistTry
         Edge<Node>(node: element, cursor: try makeCursor(element))
@@ -140,7 +140,7 @@ func connect<Node>(
     )
 }
 
-func slicingCursor<Node: Encodable>(
+func slicingCursor<Node>(
     edges: [Edge<Node>],
     arguments: PaginationArguments
 ) -> ArraySlice<Edge<Node>> {
@@ -166,7 +166,7 @@ func slicingCursor<Node: Encodable>(
     return edges
 }
 
-func slicingCount<Node: Encodable>(
+func slicingCount<Node>(
     edges: ArraySlice<Edge<Node>>,
     arguments: PaginationArguments
 ) throws -> [Edge<Node>] {
@@ -195,7 +195,7 @@ func slicingCount<Node: Encodable>(
     return Array(edges)
 }
 
-func hasPreviousPage<Node: Encodable>(
+func hasPreviousPage<Node>(
     edges: ArraySlice<Edge<Node>>,
     arguments: PaginationArguments
 ) -> Bool {
@@ -206,7 +206,7 @@ func hasPreviousPage<Node: Encodable>(
     return false
 }
 
-func hasNextPage<Node: Encodable>(
+func hasNextPage<Node>(
     edges: ArraySlice<Edge<Node>>,
     arguments: PaginationArguments
 ) -> Bool {

Sources/Graphiti/Connection/ConnectionType.swift

@@ -3,7 +3,7 @@ import GraphQL
 public final class ConnectionType<
     Resolver,
     Context,
-    ObjectType: Encodable
+    ObjectType
 >: TypeComponent<
     Resolver,
     Context

Sources/Graphiti/Connection/Edge.swift

@@ -1,10 +1,10 @@
 protocol Edgeable {
-    associatedtype Node: Encodable
+    associatedtype Node
     var node: Node { get }
     var cursor: String { get }
 }
 
-public struct Edge<Node: Encodable>: Edgeable, Encodable {
+public struct Edge<Node>: Edgeable {
     public let node: Node
     public let cursor: String
 }

Sources/Graphiti/Definition/Reflection.swift

@@ -4,6 +4,7 @@ public enum Reflection {
         return description.hasSuffix("Protocol")
     }
 
+    @available(*, deprecated, message: "No longer used")
     public static func isEncodable(type: Any.Type) -> Bool {
         if isProtocol(type: type) {
             return true

Sources/Graphiti/Definition/TypeProvider.swift

@@ -86,16 +86,6 @@ extension TypeProvider {
     }
 
     func getOutputType(from type: Any.Type, field: String) throws -> GraphQLOutputType {
-        // TODO: Remove this when Reflection error is fixed
-        guard Reflection.isEncodable(type: type) else {
-            throw GraphQLError(
-                message:
-                // TODO: Add field type and use "type.field" format.
-                "Cannot use type \"\(type)\" for field \"\(field)\". " +
-                    "Type does not conform to \"Encodable\"."
-            )
-        }
-
         let graphQLType: GraphQLType
 
         do {

Sources/Graphiti/Field/Field/Field.swift

@@ -112,7 +112,7 @@ public class Field<ObjectType, Context, FieldType, Arguments: Decodable>: FieldC
 
 // MARK: AsyncResolve Initializers
 
-public extension Field where FieldType: Encodable {
+public extension Field {
     convenience init(
         _ name: String,
         at function: @escaping AsyncResolve<ObjectType, Context, Arguments, FieldType>,
@@ -154,7 +154,7 @@ public extension Field {
 
 // MARK: SimpleAsyncResolve Initializers
 
-public extension Field where FieldType: Encodable {
+public extension Field {
     convenience init(
         _ name: String,
         at function: @escaping SimpleAsyncResolve<ObjectType, Context, Arguments, FieldType>,
@@ -196,7 +196,11 @@ public extension Field {
 
 // MARK: SyncResolve Initializers
 
-public extension Field where FieldType: Encodable {
+// '@_disfavoredOverload' is included below because otherwise `SimpleAsyncResolve` initializers also match this signature, causing the
+// calls to be ambiguous. We prefer that if an EventLoopFuture is returned from the resolve, that `SimpleAsyncResolve` is matched.
+
+public extension Field {
+    @_disfavoredOverload
     convenience init(
         _ name: String,
         at function: @escaping SyncResolve<ObjectType, Context, Arguments, FieldType>,
@@ -205,6 +209,7 @@ public extension Field where FieldType: Encodable {
         self.init(name: name, arguments: [argument()], syncResolve: function)
     }
 
+    @_disfavoredOverload
     convenience init(
         _ name: String,
         at function: @escaping SyncResolve<ObjectType, Context, Arguments, FieldType>,
@@ -216,6 +221,7 @@ public extension Field where FieldType: Encodable {
 }
 
 public extension Field {
+    @_disfavoredOverload
     convenience init<ResolveType>(
         _ name: String,
         at function: @escaping SyncResolve<ObjectType, Context, Arguments, ResolveType>,
@@ -225,6 +231,7 @@ public extension Field {
         self.init(name: name, arguments: [argument()], syncResolve: function)
     }
 
+    @_disfavoredOverload
     convenience init<ResolveType>(
         _ name: String,
         at function: @escaping SyncResolve<ObjectType, Context, Arguments, ResolveType>,
@@ -298,7 +305,7 @@ public extension Field where Arguments == NoArguments {
 
     // MARK: ConcurrentResolve Initializers
 
-    public extension Field where FieldType: Encodable {
+    public extension Field {
         @available(macOS 10.15, iOS 15, watchOS 8, tvOS 15, *)
         convenience init(
             _ name: String,

Sources/Graphiti/Input/Input.swift

@@ -3,7 +3,7 @@ import GraphQL
 public final class Input<
     Resolver,
     Context,
-    InputObjectType: Decodable
+    InputObjectType
 >: TypeComponent<
     Resolver,
     Context

Sources/Graphiti/Subscription/SubscribeField.swift

@@ -263,7 +263,7 @@ public class SubscriptionField<
 
 // MARK: AsyncResolve Initializers
 
-public extension SubscriptionField where FieldType: Encodable {
+public extension SubscriptionField {
     convenience init(
         _ name: String,
         at function: @escaping AsyncResolve<SourceEventType, Context, Arguments, FieldType>,
@@ -376,7 +376,7 @@ public extension SubscriptionField {
 
 // MARK: SimpleAsyncResolve Initializers
 
-public extension SubscriptionField where FieldType: Encodable {
+public extension SubscriptionField {
     convenience init(
         _ name: String,
         at function: @escaping SimpleAsyncResolve<SourceEventType, Context, Arguments, FieldType>,
@@ -491,7 +491,11 @@ public extension SubscriptionField {
 
 // MARK: SyncResolve Initializers
 
-public extension SubscriptionField where FieldType: Encodable {
+// '@_disfavoredOverload' is included below because otherwise `SimpleAsyncResolve` initializers also match this signature, causing the
+// calls to be ambiguous. We prefer that if an EventLoopFuture is returned from the resolve, that `SimpleAsyncResolve` is matched.
+
+public extension SubscriptionField {
+    @_disfavoredOverload
     convenience init(
         _ name: String,
         at function: @escaping SyncResolve<SourceEventType, Context, Arguments, FieldType>,
@@ -511,6 +515,7 @@ public extension SubscriptionField where FieldType: Encodable {
         )
     }
 
+    @_disfavoredOverload
     convenience init(
         _ name: String,
         at function: @escaping SyncResolve<SourceEventType, Context, Arguments, FieldType>,
@@ -528,6 +533,7 @@ public extension SubscriptionField where FieldType: Encodable {
 }
 
 public extension SubscriptionField {
+    @_disfavoredOverload
     convenience init(
         _ name: String,
         as: FieldType.Type,
@@ -542,6 +548,7 @@ public extension SubscriptionField {
         self.init(name: name, arguments: [argument()], as: `as`, syncSubscribe: subFunc)
     }
 
+    @_disfavoredOverload
     convenience init(
         _ name: String,
         as: FieldType.Type,
@@ -557,6 +564,7 @@ public extension SubscriptionField {
         self.init(name: name, arguments: arguments(), as: `as`, syncSubscribe: subFunc)
     }
 
+    @_disfavoredOverload
     convenience init<ResolveType>(
         _ name: String,
         at function: @escaping SyncResolve<SourceEventType, Context, Arguments, ResolveType>,
@@ -577,6 +585,7 @@ public extension SubscriptionField {
         )
     }
 
+    @_disfavoredOverload
     convenience init<ResolveType>(
         _ name: String,
         at function: @escaping SyncResolve<SourceEventType, Context, Arguments, ResolveType>,
@@ -680,7 +689,7 @@ public extension SubscriptionField {
 
     // MARK: ConcurrentResolve Initializers
 
-    public extension SubscriptionField where FieldType: Encodable {
+    public extension SubscriptionField {
         @available(macOS 10.15, iOS 15, watchOS 8, tvOS 15, *)
         convenience init(
             _ name: String,

Sources/Graphiti/Type/Type.swift

@@ -1,6 +1,6 @@
 import GraphQL
 
-public final class Type<Resolver, Context, ObjectType: Encodable>: TypeComponent<
+public final class Type<Resolver, Context, ObjectType>: TypeComponent<
     Resolver,
     Context
 > {

Tests/GraphitiTests/ConnectionTests.swift

@@ -4,7 +4,7 @@ import NIO
 import XCTest
 
 class ConnectionTests: XCTestCase {
-    struct Comment: Codable, Identifiable {
+    struct Comment: Identifiable {
         let id: Int
         let message: String
     }

Tests/GraphitiTests/HelloWorldTests/HelloWorldTests.swift

@@ -21,7 +21,7 @@ struct ID: Codable {
     }
 }
 
-struct User: Codable {
+struct User {
     let id: String
     let name: String?
     let friends: [User]?
@@ -53,7 +53,7 @@ struct UserInput: Codable {
     let friends: [UserInput]?
 }
 
-struct UserEvent: Codable {
+struct UserEvent {
     let user: User
 }
 

Tests/GraphitiTests/ProductAPI/ProductContext.swift

@@ -1,5 +1,6 @@
 import Foundation
 
+// swiftformat:disable:next enumNamespaces
 struct ProductContext {
     static let dimensions = [
         ProductDimension(

Tests/GraphitiTests/ProductAPI/ProductEntities.swift

@@ -1,7 +1,7 @@
 import Foundation
 import Graphiti
 
-struct Product: Codable {
+struct Product {
     let id: String
     let sku: String?
     let package: String?
@@ -30,7 +30,7 @@ struct Product: Codable {
     }
 }
 
-struct DeprecatedProduct: Codable {
+struct DeprecatedProduct {
     let sku: String
     let package: String
     let reason: String?
@@ -42,11 +42,11 @@ struct DeprecatedProduct: Codable {
     }
 }
 
-struct ProductVariation: Codable {
+struct ProductVariation {
     let id: String
 }
 
-struct ProductResearch: Codable {
+struct ProductResearch {
     let study: CaseStudy
     let outcome: String?
 
@@ -59,18 +59,18 @@ struct ProductResearch: Codable {
     }
 }
 
-struct CaseStudy: Codable {
+struct CaseStudy {
     let caseNumber: String
     let description: String?
 }
 
-struct ProductDimension: Codable {
+struct ProductDimension {
     let size: String?
     let weight: Float?
     let unit: String?
 }
 
-struct ProductUser: Codable {
+struct ProductUser {
     let email: String
     let name: String?
     let totalProductsCreated: Int?