Allow access to Java inner classes using lua field syntax.

src/jse/org/luaj/vm2/lib/jse/JavaClass.java

@@ -54,6 +54,7 @@ class JavaClass extends JavaInstance implements CoerceJavaToLua.Coercion {
 	
 	Map fields;
 	Map methods;
+	Map innerclasses;
 	
 	static JavaClass forClass(Class c) {
 		JavaClass j = (JavaClass) classes.get(c);
@@ -78,7 +79,7 @@ class JavaClass extends JavaInstance implements CoerceJavaToLua.Coercion {
 			for ( int i=0; i<f.length; i++ ) {
 				Field fi = f[i];
 				if ( Modifier.isPublic(fi.getModifiers()) ) {
-					m.put( LuaValue.valueOf(fi.getName()), fi );
+					m.put(LuaValue.valueOf(fi.getName()), fi);
 					try {
 						if (!fi.isAccessible())
 							fi.setAccessible(true);
@@ -130,6 +131,21 @@ class JavaClass extends JavaInstance implements CoerceJavaToLua.Coercion {
 		}
 		return (LuaValue) methods.get(key);
 	}
+	
+	Class getInnerClass(LuaValue key) {
+		if ( innerclasses == null ) {
+			Map m = new HashMap();
+			Class[] c = ((Class)m_instance).getClasses();
+			for ( int i=0; i<c.length; i++ ) {
+				Class ci = c[i];
+				String name = ci.getName();
+				String stub = name.substring(Math.max(name.lastIndexOf('$'), name.lastIndexOf('.'))+1);
+				m.put(LuaValue.valueOf(stub), ci);
+			}
+			innerclasses = m;
+		}
+		return (Class) innerclasses.get(key);
+	}
 
 	public LuaValue getConstructor() {
 		return getMethod(NEW);

src/jse/org/luaj/vm2/lib/jse/JavaInstance.java

@@ -59,6 +59,9 @@ class JavaInstance extends LuaUserdata {
 		LuaValue m = jclass.getMethod(key);
 		if ( m != null )
 			return m;
+		Class c = jclass.getInnerClass(key);
+		if ( c != null )
+			return JavaClass.forClass(c);
 		return super.get(key);
 	}