- do not mark extern classes as :used automatically (but still keep them)

- replaced :defineFeature with __define_feature__
- TODO: js.Reflect.getProperty/setProperty

dce.ml

@@ -77,8 +77,7 @@ let mark_field dce c cf stat = if not (has_meta ":used" cf.cf_meta) then begin
 	dce.added_fields <- (c,cf,stat) :: dce.added_fields;
 end
 
-(* mark a class as kept. If the class has fields marked as @:?keep, make sure to keep them *)
-let rec mark_class dce c = if not (has_meta ":used" c.cl_meta) then begin
+let rec update_marked_class_fields dce c =
 	(* mark all :?used fields as surely :used now *)
 	List.iter (fun cf ->
 		if has_meta ":?used" cf.cf_meta then mark_field dce c cf true
@@ -86,11 +85,15 @@ let rec mark_class dce c = if not (has_meta ":used" c.cl_meta) then begin
 	List.iter (fun cf ->
 		if has_meta ":?used" cf.cf_meta then mark_field dce c cf false
 	) c.cl_ordered_fields;
-	c.cl_meta <- (":used",[],c.cl_pos) :: c.cl_meta;
 	(* we always have to keep super classes and implemented interfaces *)
 	(match c.cl_init with None -> () | Some init -> dce.follow_expr dce init);
 	List.iter (fun (c,_) -> mark_class dce c) c.cl_implements;
-	match c.cl_super with None -> () | Some (csup,pl) -> mark_class dce csup;
+	(match c.cl_super with None -> () | Some (csup,pl) -> mark_class dce csup)
+
+(* mark a class as kept. If the class has fields marked as @:?keep, make sure to keep them *)
+and mark_class dce c = if not (has_meta ":used" c.cl_meta) then begin
+	c.cl_meta <- (":used",[],c.cl_pos) :: c.cl_meta;
+	update_marked_class_fields dce c;
 end
 
 (* mark a type as kept *)
@@ -195,6 +198,9 @@ and expr dce e =
 	| TTypeExpr (TEnumDecl e)
 	| TEnumField(e,_) ->
 		mark_t dce (TEnum(e,[]));
+	| TCall ({eexpr = TLocal ({v_name = "__define_feature__"})},[{eexpr = TConst (TString ft)};e]) ->
+		Common.add_feature dce.ctx.com ft;
+		expr dce e
 	(* keep toString method when the class is argument to Std.string or haxe.Log.trace *)
 	| TCall ({eexpr = TField({eexpr = TTypeExpr (TClassDecl ({cl_path = (["haxe"],"Log")} as c))},"trace")} as ef, ([e2;_] as args))
 	| TCall ({eexpr = TField({eexpr = TTypeExpr (TClassDecl ({cl_path = ([],"Std")} as c))},"string")} as ef, ([e2] as args)) ->
@@ -235,7 +241,7 @@ let run ctx main types modules =
 	let rec loop acc types = match types with
 		| (TClassDecl c) :: l ->
 			let keep_class = keep_whole_class dce c in
-			if keep_class then mark_class dce c;
+			if keep_class then (if c.cl_extern then update_marked_class_fields dce c else mark_class dce c);
 			(* extern classes should never serve as entry point *)
 			let keep_class = keep_class && (not c.cl_extern || c.cl_interface) in
 			let rec loop2 acc cfl stat = match cfl with

genjs.ml

@@ -353,6 +353,8 @@ let rec gen_call ctx e el in_value =
 		spr ctx ")";
 	| TLocal { v_name = "__js__" }, [{ eexpr = TConst (TString code) }] ->
 		spr ctx (String.concat "\n" (ExtString.String.nsplit code "\r\n"))
+	| TLocal ({v_name = "__define_feature__"}), [_;e] ->
+		gen_expr ctx e		
 	| TLocal { v_name = "__feature__" }, { eexpr = TConst (TString f) } :: eif :: eelse ->
 		(if has_feature ctx f then
 			gen_value ctx eif
@@ -1168,7 +1170,7 @@ let generate com =
 	if has_feature ctx "use.$bind" then begin
 		print ctx "var $_";
 		newline ctx;
-		print ctx "function $bind(o,m) { var f = function(){ return f.method.apply(f.scope, arguments); }; f.scope = o; f.method = m; return f; }";
+		print ctx "function $bind(o,m) { var f = function(){ return f.method.apply(f.scope, arguments); }; f.scope = o; f.method = m; return f; }";
 		ctx.separator <- true;
 		newline ctx;
 	end;

std/js/Boot.hx

@@ -59,16 +59,16 @@ class Boot {
 		}
 	}
 
-	@:defineFeature static inline function isClass(o:Dynamic) : Bool {
-		return o.__name__;
+	static inline function isClass(o:Dynamic) : Bool {
+		return untyped __define_feature__("js.Boot.isClass", o.__name__);
 	}
 
-	@:defineFeature static inline function isEnum(e:Dynamic) : Bool {
-		return e.__ename__;
+	static inline function isEnum(e:Dynamic) : Bool {
+		return untyped __define_feature__("js.Boot.isEnum", e.__ename__);
 	}
 
-	@:defineFeature static inline function getClass(o:Dynamic) : Dynamic {
-		return o.__class__;
+	static inline function getClass(o:Dynamic) : Dynamic {
+		return untyped __define_feature__("js.Boot.getClass", o.__class__);
 	}
 
 	@:feature("has_enum")