Swift 4.2: Rename Random to SystemRandomNumberGenerator (#6)

* Rename Random to SystemRandomNumberGenerator for Swift 4.2

* Update Swift version

* Set swift version to development snapshot

* Set swift version to development snapshot

* Set swift version to development snapshot

* Remove Swift 4.2 check since the Random change was apparently backported

* Optimistically update to latest Swift 4.2 snapshot

* try Swift version 4.2

* will this kind of version string work?

* ok fine convergence it is

* try compiling without the +Random extension

* temporarily remove RandomAccessCollection conformance

* update +Random.swift to 4.2 APIs

* build on macOS instead

Author: greg

.swift-version

@@ -1 +1 @@
-4.1
+swift-4.2-CONVERGENCE

.travis.yml

@@ -1,9 +1,8 @@
 os:
-  - linux
+  - osx
+osx_image: xcode10
 env:
 language: generic
-sudo: required
-dist: trusty
 install:
   - if [ $TRAVIS_OS_NAME = linux ]; then
       eval "$(curl -sL https://swiftenv.fuller.li/install.sh)";

NonEmpty.xcodeproj/project.pbxproj

@@ -75,7 +75,7 @@
 		80CD742220D58E11004E5F60 /* NonEmpty+Array.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NonEmpty+Array.swift"; sourceTree = "<group>"; };
 		80EFFA6020D5A1BE00B265AE /* NonEmpty+Random.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NonEmpty+Random.swift"; sourceTree = "<group>"; };
 		"NonEmpty::NonEmpty::Product" /* NonEmpty.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = NonEmpty.framework; sourceTree = BUILT_PRODUCTS_DIR; };
-		"NonEmpty::NonEmptyTests::Product" /* NonEmptyTests.xctest */ = {isa = PBXFileReference; lastKnownFileType = file; path = NonEmptyTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		"NonEmpty::NonEmptyTests::Product" /* NonEmptyTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; path = NonEmptyTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		OBJ_14 /* NonEmptyTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NonEmptyTests.swift; sourceTree = "<group>"; };
 		OBJ_16 /* NonEmpty.xcworkspace */ = {isa = PBXFileReference; lastKnownFileType = wrapper.workspace; path = NonEmpty.xcworkspace; sourceTree = SOURCE_ROOT; };
 		OBJ_6 /* Package.swift */ = {isa = PBXFileReference; explicitFileType = sourcecode.swift; path = Package.swift; sourceTree = "<group>"; };
@@ -235,6 +235,14 @@
 			isa = PBXProject;
 			attributes = {
 				LastUpgradeCheck = 9999;
+				TargetAttributes = {
+					"NonEmpty::NonEmpty" = {
+						LastSwiftMigration = 1000;
+					};
+					"NonEmpty::NonEmptyTests" = {
+						LastSwiftMigration = 1000;
+					};
+				};
 			};
 			buildConfigurationList = OBJ_2 /* Build configuration list for PBXProject "NonEmpty" */;
 			compatibilityVersion = "Xcode 3.2";
@@ -331,7 +339,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGET_NAME = NonEmpty;
 			};
 			name = Debug;
@@ -356,7 +364,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGET_NAME = NonEmpty;
 			};
 			name = Release;
@@ -453,7 +461,7 @@
 				OTHER_LDFLAGS = "$(inherited)";
 				OTHER_SWIFT_FLAGS = "$(inherited)";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGET_NAME = NonEmptyTests;
 			};
 			name = Debug;
@@ -474,7 +482,7 @@
 				OTHER_LDFLAGS = "$(inherited)";
 				OTHER_SWIFT_FLAGS = "$(inherited)";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGET_NAME = NonEmptyTests;
 			};
 			name = Release;

Sources/NonEmpty/NonEmpty+Random.swift

@@ -1,11 +1,12 @@
-#if swift(>=4.1.5)
+#if swift(>=4.2)
 extension NonEmpty {
   public func randomElement<T: RandomNumberGenerator>(using generator: inout T) -> Element {
     return ContiguousArray(self).randomElement(using: &generator) ?? self.head
   }
 
   public func randomElement() -> Element {
-    return self.randomElement(using: &Random.default)
+    var generator = SystemRandomNumberGenerator()
+    return self.randomElement(using: &generator)
   }
 }
 
@@ -17,7 +18,8 @@ extension NonEmpty where C: RangeReplaceableCollection {
   }
 
   public mutating func shuffle() {
-    self.shuffle(using: &Random.default)
+    var generator = SystemRandomNumberGenerator()
+    self.shuffle(using: &generator)
   }
 
   public func shuffled<T: RandomNumberGenerator>(using generator: inout T) -> NonEmpty {
@@ -27,7 +29,8 @@ extension NonEmpty where C: RangeReplaceableCollection {
   }
 
   public func shuffled() -> NonEmpty {
-    return self.shuffled(using: &Random.default)
+    var generator = SystemRandomNumberGenerator()
+    return self.shuffled(using: &generator)
   }
 }
 #endif