implement individual CodePointIter class

unifill/CodePointIter.hx

@@ -0,0 +1,19 @@
+package unifill;
+
+class CodePointIter {
+	var s : String;
+	var itr : InternalEncodingIter;
+
+	public inline function new(s : String) {
+		this.s = s;
+		this.itr = new InternalEncodingIter(s, 0, s.length);
+	}
+
+	public inline function hasNext() : Bool {
+		return itr.hasNext();
+	}
+
+	public inline function next() : CodePoint {
+		return cast InternalEncoding.codePointAt(s, itr.next());
+	}
+}

unifill/Unifill.hx

@@ -110,11 +110,7 @@ class Unifill {
 	   Returns an iterator of the code points of String `s`.
 	 **/
 	public static inline function uIterator(s : String) : Iterator<CodePoint> {
-		var itr = new InternalEncodingIter(s, 0, s.length);
-		return {
-			hasNext: itr.hasNext,
-			next: function() return cast InternalEncoding.codePointAt(s, itr.next())
-		};
+		return new CodePointIter(s);
 	}
 
 	/**