Moving [Custom]PlaygroundQuickLook[able]=>PlaygroundSupport

All the quicklook stuff belongs there.

Author: Dave Abrahams

PlaygroundLogger/PlaygroundLogger/Common.swift

@@ -21,7 +21,7 @@ protocol Serializable {
 }
 
 typealias ChildrenRange = CountableRange<UInt64>
-typealias QuickLookObject = Swift.PlaygroundQuickLook
+typealias QuickLookObject = Swift._PlaygroundQuickLook
 
 // given a disparate array of ranges, return a possibly smaller such array such that
 // no two ranges overlap and ranges are sorted by their startIndex

PlaygroundLogger/PlaygroundLogger/LoggerMirror.swift

@@ -20,7 +20,7 @@ final class LoggerMirror {
     private var superclassMirror: (Bool, LoggerMirror?)
     private var typeNameData: String?
     private var displayTypeNameData: String?
-    private var quickLookData: PlaygroundQuickLook?? = nil
+    private var quickLookData: _PlaygroundQuickLook?? = nil
 
     private static let Swift_Stdlib_Regex = Regex(pattern: "(?<!\\.)\\b(Swift\\.)")
 
@@ -127,13 +127,13 @@ final class LoggerMirror {
         else { return .`struct` }
     }
 
-    var quickLookObject: PlaygroundQuickLook? {
+    var quickLookObject: _PlaygroundQuickLook? {
         if let prefetched = quickLookData {
             return prefetched
         }
         guard let obj = object else { return nil }
         quickLookData = nil
-        let cpql = PlaygroundQuickLook(reflecting: obj)
+        let cpql = _PlaygroundQuickLook(reflecting: obj)
         switch cpql {
         case .text( _):
             if (obj as? CustomPlaygroundQuickLookable) != nil {

PlaygroundLogger/PlaygroundLogger/TestCases.swift

@@ -608,9 +608,9 @@ class EnumSummaryTestCase_NotGeneric : TestCase {
 //                NSColor.blueColor().set()
 //                NSBezierPath(rect: rect).fill()
 //            }
-//            func customPlaygroundQuickLook() -> PlaygroundQuickLook {
+//            func customPlaygroundQuickLook() -> _PlaygroundQuickLook {
 //                let hv = HelperView(frame: CGRect(x: 0, y: 0, width: 50, height: 50))
-//                return PlaygroundQuickLook.View(hv)
+//                return _PlaygroundQuickLook.View(hv)
 //            }
 //        }
 //
@@ -648,18 +648,18 @@ class PrintHookTestCase : TestCase {
     }
 }
 
-class PlaygroundQuickLookCalledOnceTestCase : TestCase {
+class _PlaygroundQuickLookCalledOnceTestCase : TestCase {
     required init?() {}
     var name: String { return "PlaygroundQuickLookCalledOnce" }
     var explanation: String { return "Check that the logger only calls customPlaygroundQuickLook() one time per log operation" }
     var behavior: TestBehavior { return .ExpectedSuccess }
     func doTest() {
         class MyObject : CustomPlaygroundQuickLookable {
             var numCalls = 0
-            var customPlaygroundQuickLook: PlaygroundQuickLook {
+            var customPlaygroundQuickLook: _PlaygroundQuickLook {
                 get {
                     numCalls = numCalls + 1
-                    return PlaygroundQuickLook(reflecting: "Hello world")
+                    return _PlaygroundQuickLook(reflecting: "Hello world")
                 }
             }
         }