Migrate to Swift 2.3

Base32.xcodeproj/project.pbxproj

@@ -500,21 +500,27 @@
 				TargetAttributes = {
 					6CA0A7971A74E80600AC539F = {
 						CreatedOnToolsVersion = 6.1.1;
+						LastSwiftMigration = 0800;
 					};
 					6CA0A7A21A74E80600AC539F = {
 						CreatedOnToolsVersion = 6.1.1;
+						LastSwiftMigration = 0800;
 					};
 					6CA0A7D21A74E91700AC539F = {
 						CreatedOnToolsVersion = 6.1.1;
+						LastSwiftMigration = 0800;
 					};
 					6CA0A7DC1A74E91800AC539F = {
 						CreatedOnToolsVersion = 6.1.1;
+						LastSwiftMigration = 0800;
 					};
 					6CA0A8061A75135D00AC539F = {
 						CreatedOnToolsVersion = 6.1.1;
+						LastSwiftMigration = 0800;
 					};
 					6CCCF1EA1BC20835003CE287 = {
 						CreatedOnToolsVersion = 7.1;
+						LastSwiftMigration = 0800;
 					};
 				};
 			};
@@ -710,6 +716,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -722,6 +729,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -732,6 +740,7 @@
 				INFOPLIST_FILE = Base32Tests/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -742,6 +751,7 @@
 				INFOPLIST_FILE = Base32Tests/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -754,6 +764,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -766,6 +777,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -776,6 +788,7 @@
 				INFOPLIST_FILE = Base32Tests/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -786,6 +799,7 @@
 				INFOPLIST_FILE = Base32Tests/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -797,6 +811,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "SecEncodeTransformTests/SecEncodeTransformTests-Bridging-Header.h";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -808,6 +823,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "SecEncodeTransformTests/SecEncodeTransformTests-Bridging-Header.h";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -820,6 +836,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
@@ -834,6 +851,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				INFOPLIST_FILE = Base32/Info.plist;
 				PRODUCT_BUNDLE_IDENTIFIER = "io.github.norio-nomura.$(PRODUCT_NAME:rfc1034identifier)";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};

Base32/Base16.swift

@@ -132,7 +132,7 @@ private func base16decode(string: String) -> [UInt8]? {
         } else {
             return nil
         }
-        index++
+        index += 1
     }
     return buffer
 }

Base32/Base32.swift

@@ -164,10 +164,11 @@ let alphabetEncodeTable: [Int8] = ["A","B","C","D","E","F","G","H","I","J","K","
 
 let extendedHexAlphabetEncodeTable: [Int8] = ["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V"]
 
-private func base32encode(data: UnsafePointer<Void>, var _ length: Int, _ table: [Int8]) -> String {
+private func base32encode(data: UnsafePointer<Void>, _ length: Int, _ table: [Int8]) -> String {
     if length == 0 {
         return ""
     }
+    var length = length
     
     var bytes = UnsafePointer<UInt8>(data)