Update for Swift 4.0 (#228)

Now uses Swift 4.0 and requires Xcode 9.0.

.swift-version

@@ -1 +1 @@
-3.0
+4.0

.travis.yml

@@ -1,5 +1,5 @@
 language:      objective-c   # well "swift" actually
-osx_image:     xcode8
+osx_image:     xcode9
 xcode_project: OAuth2.xcodeproj
 xcode_scheme:  OAuth2macOS
 xcode_sdk:     macosx

CONTRIBUTORS.md

@@ -18,3 +18,4 @@ Contributors to the codebase, in reverse chronological order:
 - Tomohiro Kumagai, @ez-net
 - Tim Sneed, @trsneed
 - Vojto Rinik, @vojto
+- Paul Wilkinson, @paulw11

OAuth2.xcodeproj/project.pbxproj

@@ -565,7 +565,7 @@
 			attributes = {
 				LastSwiftMigration = 0700;
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0810;
+				LastUpgradeCheck = 0900;
 				ORGANIZATIONNAME = "Pascal Pfiffner";
 				TargetAttributes = {
 					659854451C5B3BEA00237D39 = {
@@ -580,7 +580,7 @@
 					};
 					EEE209A119427DFE00736F1A = {
 						CreatedOnToolsVersion = 6.0;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0900;
 						TestTargetID = EEE209461942772800736F1A;
 					};
 				};
@@ -872,14 +872,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -909,7 +915,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -924,14 +930,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -952,7 +964,7 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.9;
 				METAL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -978,7 +990,7 @@
 				PRODUCT_NAME = OAuth2;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -1000,7 +1012,7 @@
 				PRODUCT_NAME = OAuth2;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -1022,7 +1034,7 @@
 				PRODUCT_NAME = OAuth2;
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -1046,7 +1058,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};

OAuth2.xcodeproj/xcshareddata/xcschemes/OAuth2iOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0820"
+   LastUpgradeVersion = "0900"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
@@ -55,6 +56,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"

OAuth2.xcodeproj/xcshareddata/xcschemes/OAuth2macOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0820"
+   LastUpgradeVersion = "0900"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -40,6 +40,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
@@ -69,6 +70,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"

OAuth2.xcodeproj/xcshareddata/xcschemes/OAuth2tvOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0820"
+   LastUpgradeVersion = "0900"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
@@ -55,6 +56,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"

Sources/Base/OAuth2Base.swift

@@ -471,7 +471,7 @@ open class OAuth2ContextStore {
 	open var state: String {
 		if _state.isEmpty {
 			_state = UUID().uuidString
-			_state = _state[_state.startIndex..<_state.index(_state.startIndex, offsetBy: 8)]		// only use the first 8 chars, should be enough
+			_state = String(_state[_state.startIndex..<_state.index(_state.startIndex, offsetBy: 8)])        // only use the first 8 chars, should be enough
 		}
 		return _state
 	}

Sources/Base/OAuth2Requestable.swift

@@ -213,7 +213,7 @@ open class OAuth2Requestable {
 /**
 Helper function to ensure that the callback is executed on the main thread.
 */
-public func callOnMainThread(_ callback: ((Void) -> Void)) {
+public func callOnMainThread(_ callback: (() -> Void)) {
 	if Thread.isMainThread {
 		callback()
 	}

Sources/iOS/OAuth2WebViewController.swift

@@ -167,11 +167,11 @@ open class OAuth2WebViewController: UIViewController, WKNavigationDelegate {
 		let _ = webView?.load(URLRequest(url: url))
 	}
 
-	func goBack(_ sender: AnyObject?) {
+	@objc func goBack(_ sender: AnyObject?) {
 		let _ = webView?.goBack()
 	}
 
-	func cancel(_ sender: AnyObject?) {
+	@objc func cancel(_ sender: AnyObject?) {
 		dismiss(asCancel: true, animated: (nil != sender) ? true : false)
 	}
 

Sources/macOS/OAuth2Authorizer+macOS.swift

@@ -60,7 +60,7 @@ open class OAuth2Authorizer: OAuth2AuthorizerUI {
 	- throws:        UnableToOpenAuthorizeURL on failure
 	*/
 	public func openAuthorizeURLInBrowser(_ url: URL) throws {
-		if !NSWorkspace.shared().open(url) {
+		if !NSWorkspace.shared.open(url) {
 			throw OAuth2Error.unableToOpenAuthorizeURL
 		}
 	}

Sources/macOS/OAuth2WebViewController.swift

@@ -34,7 +34,7 @@ public class OAuth2WebViewController: NSViewController, WKNavigationDelegate, NS
 
 	/** Designated initializer. */
 	public init() {
-		super.init(nibName: nil, bundle: nil)!
+		super.init(nibName: nil, bundle: nil)
 	}
 
 	/// Handle to the OAuth2 instance in play, only used for debug logging at this time.
@@ -78,7 +78,7 @@ public class OAuth2WebViewController: NSViewController, WKNavigationDelegate, NS
 	public var onIntercept: ((URL) -> Bool)?
 
 	/// Called when the web view is about to be dismissed manually.
-	public var onWillCancel: ((Void) -> Void)?
+	public var onWillCancel: (() -> Void)?
 
 	/// Our web view; implicitly unwrapped so do not attempt to use it unless isViewLoaded() returns true.
 	var webView: WKWebView!
@@ -89,7 +89,7 @@ public class OAuth2WebViewController: NSViewController, WKNavigationDelegate, NS
 		view.translatesAutoresizingMaskIntoConstraints = false
 
 		progressIndicator = NSProgressIndicator(frame: NSZeroRect)
-		progressIndicator.style = .spinningStyle
+		progressIndicator.style = .spinning
 		progressIndicator.isDisplayedWhenStopped = false
 		progressIndicator.sizeToFit()
 		progressIndicator.translatesAutoresizingMaskIntoConstraints = false
@@ -216,7 +216,7 @@ public class OAuth2WebViewController: NSViewController, WKNavigationDelegate, NS
 	/**
 	Tells the web view to stop loading the current page, then calls the `onWillCancel` block if it has a value.
 	*/
-	func cancel(_ sender: AnyObject?) {
+	@objc func cancel(_ sender: AnyObject?) {
 		webView.stopLoading()
 		onWillCancel?()
 	}
@@ -281,7 +281,7 @@ public class OAuth2WebViewController: NSViewController, WKNavigationDelegate, NS
 
 	// MARK: - Window Delegate
 
-	public func windowShouldClose(_ sender: Any) -> Bool {
+	public func windowShouldClose(_ sender: NSWindow) -> Bool {
 		onWillCancel?()
 		return false
 	}