add field vtable

src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java

@@ -314,6 +314,8 @@ public class ModuleGenerator {
         if( superClass != null ) {
             String superClassName = superClass.getName();
             listStructFields( superClassName, list );
+        } else {
+            list.add( new NamedStorageType( ValueType.i32, className, ".vtable" ) );
         }
 
         for( FieldInfo field : classFile.getFields() ) {

src/de/inetsoftware/jwebassembly/wasm/NamedStorageType.java

@@ -71,7 +71,21 @@ public class NamedStorageType {
      *            the type manager
      */
     private NamedStorageType( String type, String className, String name, TypeManager types ) {
-        this.type = new ValueTypeParser( type, types ).next();
+        this( new ValueTypeParser( type, types ).next(), className, name );
+    }
+
+    /**
+     * Create a new instance
+     * 
+     * @param type
+     *            the type
+     * @param className
+     *            the class name
+     * @param name
+     *            the name
+     */
+    public NamedStorageType( AnyType type, String className, String name ) {
+        this.type = type;
         this.className = className;
         this.name = name;
     }