1 /*
   2  * Copyright 2006 Sun Microsystems, Inc.  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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug     6362178
  27  * @summary MirroredType[s]Exception shouldn't be created too eagerly
  28  * @author  Scott Seligman
  29  * @compile -g OverEager.java
  30  * @compile -processor OverEager -proc:only OverEager.java
  31  */
  32 
  33 import java.util.Set;
  34 import javax.annotation.processing.*;
  35 import javax.lang.model.SourceVersion;
  36 import javax.lang.model.element.*;
  37 import javax.lang.model.type.*;
  38 import javax.lang.model.util.*;
  39 import static javax.lang.model.util.ElementFilter.*;
  40 
  41 @SupportedSourceVersion(SourceVersion.RELEASE_6)
  42 @SupportedAnnotationTypes("IAm")
  43 @IAm(OverEager.class)
  44 public class OverEager extends AbstractProcessor {
  45 
  46     Elements elements;
  47     Types types;
  48 
  49     public void init(ProcessingEnvironment penv) {
  50         super.init(penv);
  51         elements = penv.getElementUtils();
  52         types =  penv.getTypeUtils();
  53     }
  54 
  55     public boolean process(Set<? extends TypeElement> annoTypes,
  56                            RoundEnvironment round) {
  57         if (!round.processingOver())
  58             doit(annoTypes, round);
  59         return true;
  60     }
  61 
  62     private void doit(Set<? extends TypeElement> annoTypes,
  63                       RoundEnvironment round) {
  64         for (TypeElement t : typesIn(round.getRootElements())) {
  65             IAm anno = t.getAnnotation(IAm.class);
  66             if (anno != null)
  67                 checkAnno(anno);
  68         }
  69     }
  70 
  71     private void checkAnno(IAm anno) {
  72         try {
  73             anno.value();
  74             throw new AssertionError();
  75         } catch (MirroredTypeException e) {
  76             System.out.println("Looking for checkAnno in this stack trace:");
  77             e.printStackTrace();
  78             for (StackTraceElement frame : e.getStackTrace()) {
  79                 if (frame.getMethodName() == "checkAnno")
  80                     return;
  81             }
  82             throw new AssertionError();
  83         }
  84     }
  85 }
  86 
  87 @interface IAm {
  88     Class<?> value();
  89 }