Update project to Swift 5.10 and start on Sendable updates

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.8
+// swift-tools-version:5.10
 
 import PackageDescription
 

Sources/XcodeProj/Extensions/NSLocking+withLock.swift

@@ -0,0 +1,11 @@
+import Foundation
+
+// reimplemention of `withLock` from `NSLocking` extension that is exclusive to the macOS version of `Foundation`
+extension NSLocking {
+  func withLock<T>(_ body: () throws -> T) rethrows -> T {
+    lock()
+    defer { unlock() }
+    return try body()
+  }
+}
+

Sources/XcodeProj/Objects/BuildPhase/PBXBuildFile.swift

@@ -10,7 +10,7 @@ public final class PBXBuildFile: PBXObject {
     /// Returns the file the build file refers to.
     public var file: PBXFileElement? {
         get {
-            fileReference?.getObject()
+            fileReference?.object()
         }
         set {
             fileReference = newValue?.reference
@@ -23,7 +23,7 @@ public final class PBXBuildFile: PBXObject {
     /// Product.
     public var product: XCSwiftPackageProductDependency? {
         get {
-            productReference?.getObject()
+            productReference?.object()
         }
         set {
             productReference = newValue?.reference
@@ -104,8 +104,8 @@ extension PBXBuildFile {
     /// - Returns: file name.
     /// - Throws: an error if the name cannot be obtained.
     func fileName() throws -> String? {
-        if let fileElement: PBXFileElement = fileReference?.getObject(), let name = fileElement.fileName() { return name }
-        if let product: XCSwiftPackageProductDependency = productReference?.getObject() { return product.productName }
+        if let fileElement: PBXFileElement = fileReference?.object(), let name = fileElement.fileName() { return name }
+        if let product: XCSwiftPackageProductDependency = productReference?.object() { return product.productName }
         return nil
     }
 
@@ -171,7 +171,7 @@ final class PBXBuildPhaseFile: PlistSerializable, Equatable {
         var dictionary: [CommentedString: PlistValue] = [:]
         dictionary["isa"] = .string(CommentedString(PBXBuildFile.isa))
         if let fileReference = buildFile.fileReference {
-            let fileElement: PBXFileElement? = fileReference.getObject()
+            let fileElement: PBXFileElement? = fileReference.object()
             dictionary["fileRef"] = .string(CommentedString(fileReference.value, comment: fileElement?.fileName()))
         }
         if let product = buildFile.product {

Sources/XcodeProj/Objects/BuildPhase/PBXBuildPhase.swift

@@ -88,7 +88,7 @@ public class PBXBuildPhase: PBXContainerItem {
         dictionary["buildActionMask"] = .string(CommentedString("\(buildActionMask)"))
         if let fileReferences = fileReferences {
             let files: PlistValue = .array(fileReferences.map { fileReference in
-                let buildFile: PBXBuildFile? = fileReference.getObject()
+                let buildFile: PBXBuildFile? = fileReference.object()
                 let name = buildFile.flatMap { try? $0.fileName() } ?? nil
                 let fileName: String = name ?? "(null)"
                 let type = self.name()

Sources/XcodeProj/Objects/Configuration/BuildSettings.swift

@@ -1,4 +1,53 @@
 import Foundation
 
 /// Build settings.
-public typealias BuildSettings = [String: Any]
+public typealias BuildSettings = [String: BuildSetting]
+
+public enum BuildSetting: Sendable, Equatable {
+    case string(String)
+    case array([String])
+
+    var valueForWriting: String {
+        switch self {
+        case .string(let string):
+            return string
+        case .array(let array):
+            return array.joined(separator: " ")
+        }
+    }
+}
+
+extension BuildSetting: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        do  {
+            let string = try container.decode(String.self)
+            self = .string(string)
+        } catch {
+            let array = try container.decode([String].self)
+            self = .array(array)
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .string(let string):
+            try container.encode(string)
+        case .array(let array):
+            try container.encode(array)
+        }
+    }
+}
+
+extension BuildSetting: ExpressibleByArrayLiteral {
+    public init(arrayLiteral elements: String...) {
+        self = .array(elements)
+    }
+}
+
+extension BuildSetting: ExpressibleByStringLiteral {
+    public init(stringLiteral value: StringLiteralType) {
+        self = .string(value)
+    }
+}

Sources/XcodeProj/Objects/Configuration/XCBuildConfiguration.swift

@@ -10,7 +10,7 @@ public final class XCBuildConfiguration: PBXObject {
     /// Base xcconfig file reference.
     public var baseConfiguration: PBXFileReference? {
         get {
-            baseConfigurationReference?.getObject()
+            baseConfigurationReference?.object()
         }
         set {
             if let newValue = newValue {
@@ -43,26 +43,26 @@ public final class XCBuildConfiguration: PBXObject {
     }
 
     // MARK: - Decodable
-
-    fileprivate enum CodingKeys: String, CodingKey {
-        case baseConfigurationReference
-        case buildSettings
-        case name
-    }
-
-    public required init(from decoder: Decoder) throws {
-        let objects = decoder.context.objects
-        let objectReferenceRepository = decoder.context.objectReferenceRepository
-        let container = try decoder.container(keyedBy: CodingKeys.self)
-        if let baseConfigurationReference: String = try container.decodeIfPresent(.baseConfigurationReference) {
-            self.baseConfigurationReference = objectReferenceRepository.getOrCreate(reference: baseConfigurationReference, objects: objects)
-        } else {
-            baseConfigurationReference = nil
-        }
-        buildSettings = try container.decode([String: Any].self, forKey: .buildSettings)
-        name = try container.decode(.name)
-        try super.init(from: decoder)
+
+  fileprivate enum CodingKeys: String, CodingKey {
+    case baseConfigurationReference
+    case buildSettings
+    case name
+  }
+
+  public required init(from decoder: Decoder) throws {
+    let objects = decoder.context.objects
+    let objectReferenceRepository = decoder.context.objectReferenceRepository
+    let container = try decoder.container(keyedBy: CodingKeys.self)
+    if let baseConfigurationReference: String = try container.decodeIfPresent(.baseConfigurationReference) {
+      self.baseConfigurationReference = objectReferenceRepository.getOrCreate(reference: baseConfigurationReference, objects: objects)
+    } else {
+      baseConfigurationReference = nil
     }
+    buildSettings = try container.decode(BuildSettings.self, forKey: .buildSettings)
+    name = try container.decode(.name)
+    try super.init(from: decoder)
+  }
 
     // MARK: - Public
 
@@ -75,16 +75,16 @@ public final class XCBuildConfiguration: PBXObject {
     public func append(setting name: String, value: String) {
         guard !value.isEmpty else { return }
 
-        let existing: Any = buildSettings[name] ?? "$(inherited)"
+        let existing: BuildSetting = buildSettings[name] ?? "$(inherited)"
 
         switch existing {
-        case let string as String where string != value:
+        case let .string(string) where string != value:
             let newValue = [string, value].joined(separator: " ")
-            buildSettings[name] = newValue
-        case let array as [String]:
+            buildSettings[name] = .string(newValue)
+        case let .array(array):
             var newValue = array
             newValue.append(value)
-            buildSettings[name] = newValue.uniqued()
+            buildSettings[name] = .array(newValue.uniqued())
         default:
             break
         }
@@ -105,7 +105,7 @@ extension XCBuildConfiguration: PlistSerializable {
         dictionary["name"] = .string(CommentedString(name))
         dictionary["buildSettings"] = buildSettings.plist()
         if let baseConfigurationReference = baseConfigurationReference {
-            let fileElement: PBXFileElement? = baseConfigurationReference.getObject()
+            let fileElement: PBXFileElement? = baseConfigurationReference.object()
             dictionary["baseConfigurationReference"] = .string(CommentedString(baseConfigurationReference.value, comment: fileElement?.fileName()))
         }
         return (key: CommentedString(reference, comment: name), value: .dictionary(dictionary))

Sources/XcodeProj/Objects/Configuration/XCConfigurationList.swift

@@ -116,7 +116,7 @@ extension XCConfigurationList: PlistSerializable {
         dictionary["isa"] = .string(CommentedString(XCConfigurationList.isa))
         dictionary["buildConfigurations"] = .array(buildConfigurationReferences
             .map { configReference in
-                let config: XCBuildConfiguration? = configReference.getObject()
+                let config: XCBuildConfiguration? = configReference.object()
                 return .string(CommentedString(configReference.value, comment: config?.name))
             })
         dictionary["defaultConfigurationIsVisible"] = .string(CommentedString("\(defaultConfigurationIsVisible.int)"))

Sources/XcodeProj/Objects/Files/PBXContainerItemProxy.swift

@@ -28,7 +28,7 @@ public final class PBXContainerItemProxy: PBXObject {
         var id: RemoteGlobalID {
             switch self {
             case let .reference(reference):
-                if let object = reference.getObject() {
+                if let object = reference.object() {
                     return .object(object)
                 } else {
                     return .string(reference.value)
@@ -65,7 +65,7 @@ public final class PBXContainerItemProxy: PBXObject {
     /// Use isContainerPortalFileReference to check if you can use the getter
     public var containerPortal: ContainerPortal {
         get {
-            ContainerPortal(object: containerPortalReference.getObject())
+            ContainerPortal(object: containerPortalReference.object())
         }
         set {
             guard let reference = newValue.reference else {

Sources/XcodeProj/Objects/Files/PBXFileElement.swift

@@ -199,10 +199,10 @@ public extension PBXFileElement {
     /// - Returns: path to the variant group base file.
     /// - Throws: an error if the path cannot be obtained.
     private func baseVariantGroupPath() throws -> String? {
-        guard let variantGroup: PBXVariantGroup = reference.getObject() else { return nil }
-        guard let baseReference = try variantGroup
+        guard let variantGroup: PBXVariantGroup = reference.object() else { return nil }
+        guard let baseReference = variantGroup
             .childrenReferences
-            .compactMap({ try $0.getThrowingObject() as PBXFileElement })
+            .compactMap({ $0.object(as: PBXFileElement.self) })
             .first(where: { $0.name == "Base" }) else { return nil }
         return baseReference.path
     }

Sources/XcodeProj/Objects/Files/PBXGroup.swift

@@ -72,7 +72,7 @@ public class PBXGroup: PBXFileElement {
         var dictionary: [CommentedString: PlistValue] = try super.plistKeyAndValue(proj: proj, reference: reference).value.dictionary ?? [:]
         dictionary["isa"] = .string(CommentedString(type(of: self).isa))
         dictionary["children"] = .array(childrenReferences.map { (fileReference) -> PlistValue in
-            let fileElement: PBXFileElement? = fileReference.getObject()
+            let fileElement: PBXFileElement? = fileReference.object()
             return .string(CommentedString(fileReference.value, comment: fileElement?.fileName()))
         })
 

Sources/XcodeProj/Objects/Files/XCVersionGroup.swift

@@ -12,7 +12,7 @@ public final class XCVersionGroup: PBXGroup {
     /// Returns the current version file reference.
     public var currentVersion: PBXFileReference? {
         get {
-            currentVersionReference?.getObject()
+            currentVersionReference?.object()
         }
         set {
             currentVersionReference = newValue?.reference
@@ -91,7 +91,7 @@ public final class XCVersionGroup: PBXGroup {
             dictionary["versionGroupType"] = .string(CommentedString(versionGroupType))
         }
         if let currentVersionReference = currentVersionReference {
-            let fileElement: PBXFileElement? = currentVersionReference.getObject()
+            let fileElement: PBXFileElement? = currentVersionReference.object()
             dictionary["currentVersion"] = .string(CommentedString(currentVersionReference.value, comment: fileElement?.fileName()))
         }
         return (key: CommentedString(reference, comment: path?.split(separator: "/").last.map(String.init)),