Swift 2: #available(…) macro

lib/rouge/lexers/swift.rb

@@ -83,6 +83,8 @@ module Rouge
             groups Keyword::Declaration, Error, Keyword::Declaration
           end
         end
+        
+        rule /#available\([^)]+\)/, Keyword::Declaration
         rule /(let|var)\b(\s*)(#{id})/ do
           groups Keyword, Text, Name::Variable

spec/visual/samples/swift

@@ -227,6 +227,13 @@ repeat {
     // loop…
 } while condition
+if #available(iOS 8.0, OSX 10.10, *) {
+   // Use Handoff APIs when available.
+   let activity = NSUserActivity(activityType:"com.example.ShoppingList.view")
+} else {
+    // Fall back when Handoff APIs not available.
+}
+
 //MARK: Classes
 public class Person : NSObject {
     let firstName: String