Merge pull request #1 from kcramer/swift5

Swift 5 and Xcode 10.2, fix warnings in Crypto.

Author: kcramer

.swift-version

@@ -1 +1 @@
-4.2
+5.0

.travis.yml

@@ -1,7 +1,7 @@
 matrix:
   include:
-    - name: "macOS Xcode 10.1 Test"
-      osx_image: xcode10.1
+    - name: "macOS Xcode 10.2 Test"
+      osx_image: xcode10.2
       xcode_workspace: ComposableCacheKit.xcworkspace
       xcode_scheme: ComposableCacheKit
       xcode_destination: platform=macOS

ComposableCacheKit.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'ComposableCacheKit'
-  s.version          = '0.1.0'
+  s.version          = '0.2.0'
   s.summary          = 'A Swift framework that provides a lightweight, composable cache.'
   s.description      = <<-DESC
 ComposableCacheKit is a Swift framework that provides a lightweight, composable cache.
@@ -13,6 +13,7 @@ ComposableCacheKit is a Swift framework that provides a lightweight, composable
 
   s.dependency 'Promises'
 
+  s.swift_version = '5.0'
   s.ios.deployment_target = '10.0'
   s.osx.deployment_target = '10.12'
   s.watchos.deployment_target = '3.0'

ComposableCacheKit.xcodeproj/project.pbxproj

@@ -272,10 +272,11 @@
 				TargetAttributes = {
 					0AF47AAE21BA29720003F8CA = {
 						CreatedOnToolsVersion = 10.1;
-						LastSwiftMigration = 1010;
+						LastSwiftMigration = 1020;
 					};
 					0AF47AB721BA29720003F8CA = {
 						CreatedOnToolsVersion = 10.1;
+						LastSwiftMigration = 1020;
 					};
 					0AF47ADC21BA54160003F8CA = {
 						CreatedOnToolsVersion = 10.1;
@@ -288,6 +289,7 @@
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = 0AF47AA521BA29720003F8CA;
 			productRefGroup = 0AF47AB021BA29720003F8CA /* Products */;
@@ -613,7 +615,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -641,7 +643,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = net.kevincramer.ComposableCacheKit;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -663,7 +665,7 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = net.kevincramer.ComposableCacheKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -685,7 +687,7 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = net.kevincramer.ComposableCacheKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};

ComposableCacheKit/Crypto.swift

@@ -14,10 +14,9 @@ internal struct Crypto {
     /// Returns the SHA256 hash of a Data as a Data value.
     internal static func sha256(data: Data) -> Data {
         var hash = [UInt8](repeating: 0, count: Int(CC_SHA256_DIGEST_LENGTH))
-        data.withUnsafeBytes { bytes in
-            _ = CC_SHA256(bytes, CC_LONG(data.count), &hash)
-        }
-        return Data(bytes: hash)
+        let bytes = [UInt8](data)
+        CC_SHA256(bytes, CC_LONG(data.count), &hash)
+        return Data(hash)
     }
 
     /// Returns the SHA256 hash of a string as a hexadecimal string.