[bgen] Make the Frameworks class instance based.

src/btouch.cs

@@ -51,6 +51,7 @@ public class BindingTouch {
 	List<string> libs = new List<string> ();
 
 	public Universe universe;
+	public Frameworks Frameworks;
 
 	public TargetFramework TargetFramework {
 		get { return target_framework.Value; }
@@ -515,6 +516,7 @@ public class BindingTouch {
 
 			AttributeManager.BindingTouch = this;
 			Stret.BindingTouch = this;
+			Frameworks = new Frameworks (CurrentPlatform);
 
 			Assembly corlib_assembly = universe.LoadFile (LocateAssembly ("mscorlib"));
 			Assembly platform_assembly = baselib;

src/generate-frameworks.csharp

@@ -26,7 +26,7 @@ Console.WriteLine ("partial class Frameworks {");
 for (int i = 0; i < names.Length; i++) {
 	var name = names [i];
 	var frameworks = allframeworks [i];
-	Console.Write ($"\tstatic readonly HashSet<string> {name} = new HashSet<string> {{\"");
+	Console.Write ($"\treadonly HashSet<string> {name} = new HashSet<string> {{\"");
 	Console.Write (string.Join ("\", \"", frameworks));
 	Console.WriteLine ("\"};");
 }
@@ -34,8 +34,8 @@ for (int i = 0; i < names.Length; i++) {
 var allArray = all.ToArray ();
 Array.Sort (allArray);
 foreach (var fw in allArray)
-	Console.WriteLine ($"\tstatic bool? _{fw.Replace (".", "")};");
+	Console.WriteLine ($"\tbool? _{fw.Replace (".", "")};");
 foreach (var fw in allArray)
-	Console.WriteLine ($"\tpublic static bool Have{fw} {{ get {{ if (!_{fw}.HasValue) _{fw} = GetValue (\"{fw}\"); return _{fw}.Value; }} }}");
+	Console.WriteLine ($"\tpublic bool Have{fw} {{ get {{ if (!_{fw}.HasValue) _{fw} = GetValue (\"{fw}\"); return _{fw}.Value; }} }}");
 Console.WriteLine ("}");
 Environment.Exit (0);

src/generator-typemanager.cs

@@ -5,6 +5,7 @@ using Type = IKVM.Reflection.Type;
 
 public static class TypeManager {
 	public static BindingTouch BindingTouch;
+	static Frameworks Frameworks { get { return BindingTouch.Frameworks; } }
 	public static Type System_Attribute;
 	public static Type System_Boolean;
 	public static Type System_Byte;

src/generator.cs

@@ -641,6 +641,7 @@ public class NamespaceManager
 	public BindingTouch BindingTouch;
 	PlatformName CurrentPlatform { get { return BindingTouch.CurrentPlatform; } }
 	bool UnifiedAPI { get { return BindingTouch.Unified; } }
+	Frameworks Frameworks { get { return BindingTouch.Frameworks; } }
 
 	public string Prefix { get; private set; }
 
@@ -808,11 +809,17 @@ public enum EnumMode {
 }
 
 public partial class Frameworks {
-	static HashSet<string> frameworks;
-	static bool GetValue (string framework)
+	HashSet<string> frameworks;
+	readonly PlatformName CurrentPlatform;
+	public Frameworks (PlatformName current_platform)
+	{
+		CurrentPlatform = current_platform;
+	}
+
+	bool GetValue (string framework)
 	{
 		if (frameworks == null) {
-			switch (Generator.CurrentPlatform) {
+			switch (CurrentPlatform) {
 			case PlatformName.iOS:
 				frameworks = iosframeworks;
 				break;
@@ -826,7 +833,7 @@ public partial class Frameworks {
 				frameworks = macosframeworks;
 				break;
 			default:
-				throw new BindingException (1047, "Unsupported platform: {0}. Please file a bug report (https://github.com/xamarin/xamarin-macios/issues/new) with a test case.", Generator.CurrentPlatform);
+				throw new BindingException (1047, "Unsupported platform: {0}. Please file a bug report (https://github.com/xamarin/xamarin-macios/issues/new) with a test case.", CurrentPlatform);
 			}
 		}
 
@@ -839,6 +846,7 @@ public partial class Generator : IMemberGatherer {
 
 	static NamespaceManager ns;
 	static BindingTouch BindingTouch;
+	static Frameworks Frameworks { get { return BindingTouch.Frameworks; } }
 	Dictionary<Type,IEnumerable<string>> selectors = new Dictionary<Type,IEnumerable<string>> ();
 	Dictionary<Type,bool> need_static = new Dictionary<Type,bool> ();
 	Dictionary<Type,bool> need_abstract = new Dictionary<Type,bool> ();