Support final access on haxe4. Resolves #17.

src/tink/macro/Member.hx

@@ -40,6 +40,22 @@ abstract Member(Field) from Field to Field {
   public var isStatic(get, set):Bool;
   public var isPublic(get, set):Null<Bool>;
   public var isBound(get, set):Null<Bool>;
+  #if haxe4
+  /**
+   * Setting this to true will erase any getters/setters.
+   */
+  public var isFinal(get, set):Bool;
+    function get_isFinal() return hasAccess(AFinal);
+    function set_isFinal(param) {
+      if (setAccess(AFinal, param)) //TODO: perhaps also do something about AInline
+        switch kind {
+          case FProp(_, _, t, e):
+            kind = FVar(t, e);
+          default:
+        }
+      return param;
+    }
+  #end
   
   public function getFunction()
     return
@@ -111,21 +127,10 @@ abstract Member(Field) from Field to Field {
   inline function set_pos(param) return this.pos = param;
   
   inline function get_overrides() return hasAccess(AOverride);
-  inline function set_overrides(param) {
-    changeAccess(
-      param ? AOverride : null, 
-      param ? null : AOverride
-    );
-    return param;
-  }
+  inline function set_overrides(param) return setAccess(AOverride, param);
+
   inline function get_isStatic() return hasAccess(AStatic);
-  function set_isStatic(param) {
-    changeAccess(
-      param ? AStatic : null, 
-      param ? null : AStatic
-    );
-    return param;
-  }
+  inline function set_isStatic(param) return setAccess(AStatic, param);
   
   function get_isPublic() {
     if (this.access != null)    
@@ -180,6 +185,15 @@ abstract Member(Field) from Field to Field {
     return false;
   }
 
+  function setAccess(a:Access, isset:Bool) {
+    changeAccess(
+      isset ? a : null, 
+      isset ? null : a
+    );
+    return isset;
+  }
+    
+  
   function changeAccess(add:Access, remove:Access) {
     var i = 0;
     if (this.access == null)

src/tink/macro/Sisyphus.hx

@@ -23,14 +23,22 @@ class Sisyphus {
     if (cf.params.length == 0) {
       name: cf.name,
       doc: cf.doc,
-      access: cf.isPublic ? [ APublic ] : [ APrivate ],
+      access: 
+        (cf.isPublic ? [ APublic ] : [ APrivate ]) 
+          #if haxe4 .concat(if (cf.isFinal) [AFinal] else []) #end
+        ,
       kind: switch([ cf.kind, cf.type ]) {
+        #if haxe4
+        case [ FVar(_, _), ret ] if (cf.isFinal):
+          FVar(toComplexType(ret), null);
+        #end
         case [ FVar(read, write), ret ]:
           FProp(
             varAccessToString(read, "get"),
             varAccessToString(write, "set"),
             toComplexType(ret),
-            null);
+            null
+          );
         case [ FMethod(_), TFun(args, ret) ]:
           FFun({
             args: [