1 /*
   2  * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package com.apple.jobjc;
  26 
  27 import java.util.Map;
  28 
  29 import com.apple.internal.jobjc.generator.model.Clazz;
  30 
  31 /*
  32  * Isolating all the reflection trickery to hijack the runtime into giving up its secrets
  33  * without actually having a full working version of JObjC. Below is a bunch of evil reflection,
  34  * but it allows the generated output to have a cleaner design.
  35  */
  36 public class SuperClassExtractor {
  37     public static Clazz getSuperClassFor(final String className, final MacOSXFramework nativeFramework, final Map<String, Clazz> allClasses) throws Throwable {
  38         final NSClass<ID> nativeClass = new NSClass<ID>(className, nativeFramework.getRuntime());
  39         final NSClass<? extends ID> nativeSuperClass = UnsafeRuntimeAccess.getSuperClass(nativeClass);
  40         final String superClassName = UnsafeRuntimeAccess.getClassNameFor(nativeSuperClass);
  41         if ("nil".equals(superClassName)) return null;
  42 
  43         final Clazz superClazz = allClasses.get(superClassName);
  44         if (superClazz != null) return superClazz;
  45 
  46         final Clazz superClazzX = getSuperClassFor(superClassName, nativeFramework, allClasses);
  47         System.out.print("[Warning] class \"" + superClassName + "\" not found in bridge support files, ");
  48         System.out.println("using \"" + superClazzX.name + "\" as superclass for \"" + className + "\"");
  49         return superClazzX;
  50     }
  51 }