Make list holder classes innner classes

Author: robinst

commonmark/src/main/java/org/commonmark/internal/renderer/text/BulletListHolder.java

@@ -1,8 +1,5 @@
 package org.commonmark.renderer.text;
 
-import org.commonmark.internal.renderer.text.BulletListHolder;
-import org.commonmark.internal.renderer.text.ListHolder;
-import org.commonmark.internal.renderer.text.OrderedListHolder;
 import org.commonmark.node.*;
 import org.commonmark.renderer.NodeRenderer;
 
@@ -288,4 +285,52 @@ private static String repeat(String s, int count) {
         }
         return sb.toString();
     }
+
+    private static class BulletListHolder extends ListHolder {
+        private final String marker;
+
+        public BulletListHolder(ListHolder parent, BulletList list) {
+            super(parent);
+            marker = list.getMarker();
+        }
+
+        public String getMarker() {
+            return marker;
+        }
+    }
+
+    private abstract static class ListHolder {
+        private final ListHolder parent;
+
+        ListHolder(ListHolder parent) {
+            this.parent = parent;
+        }
+
+        public ListHolder getParent() {
+            return parent;
+        }
+    }
+
+    private static class OrderedListHolder extends ListHolder {
+        private final String delimiter;
+        private int counter;
+
+        public OrderedListHolder(ListHolder parent, OrderedList list) {
+            super(parent);
+            delimiter = list.getMarkerDelimiter() != null ? list.getMarkerDelimiter() : ".";
+            counter = list.getMarkerStartNumber() != null ? list.getMarkerStartNumber() : 1;
+        }
+
+        public String getDelimiter() {
+            return delimiter;
+        }
+
+        public int getCounter() {
+            return counter;
+        }
+
+        public void increaseCounter() {
+            counter++;
+        }
+    }
 }