[provider] add Enum support

src/main/haxework/provider/Provider.hx

@@ -1,10 +1,24 @@
 package haxework.provider;
 
+abstract KeyType<T>(String) {
+
+    public function new(value:String) {
+        this = value;
+    }
+
+    @:from public static inline function fromClass<T>(value:Class<T>):KeyType<T> {
+        return new KeyType<T>(Type.getClassName(value));
+    }
+
+    @:from public static inline function fromEnum<T>(value:Enum<T>):KeyType<T> {
+        return new KeyType<T>(Type.getEnumName(value));
+    }
+}
 
 class Provider {
 
-    private static function key<T>(i:Class<T>, ?type:Dynamic):String {
-        var result = Type.getClassName(i);
+    private static function key<T>(i:KeyType<T>, ?type:Dynamic):String {
+        var result:String = Std.string(i);
         if (type != null) result += ':${Std.string(type)}';
         return result;
     }
@@ -13,18 +27,18 @@ class Provider {
     private static var args:Map<String, Array<Dynamic>> = new Map();
     private static var instances:Map<String, Dynamic> = new Map();
 
-    public static function setFactory<T>(i:Class<T>, clazz:Class<T>, ?type:Dynamic, ?args:Array<Dynamic>):Void {
+    public static function setFactory<T>(i:KeyType<T>, clazz:Class<T>, ?type:Dynamic, ?args:Array<Dynamic>):Void {
         var key = key(i, type);
         factories.set(key, clazz);
         if (args != null) Provider.args.set(key, args);
     }
 
-    public static function set<T>(i:Class<T>, instance:T, ?type:Dynamic):Void {
+    public static function set<T>(i:KeyType<T>, instance:T, ?type:Dynamic):Void {
         var key = key(i, type);
         instances.set(key, instance);
     }
 
-    public static function get<T>(i:Class<T>, ?type:Dynamic):T {
+    public static function get<T>(i:KeyType<T>, ?type:Dynamic):T {
         var key = key(i, type);
         if (instances.exists(key)) {
             return instances.get(key);