1 /*
   2  * Copyright (c) 2006, 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.
   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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * 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 @SupportedAnnotationTypes("IAm")
  42 @IAm(OverEager.class)
  43 public class OverEager extends AbstractProcessor {
  44 
  45     Elements elements;
  46     Types types;
  47 
  48     public void init(ProcessingEnvironment penv) {
  49         super.init(penv);
  50         elements = penv.getElementUtils();
  51         types =  penv.getTypeUtils();
  52     }
  53 
  54     public boolean process(Set<? extends TypeElement> annoTypes,
  55                            RoundEnvironment round) {
  56         if (!round.processingOver())
  57             doit(annoTypes, round);
  58         return true;
  59     }
  60 
  61     @Override
  62     public SourceVersion getSupportedSourceVersion() {
  63         return SourceVersion.latest();
  64     }
  65 
  66     private void doit(Set<? extends TypeElement> annoTypes,
  67                       RoundEnvironment round) {
  68         for (TypeElement t : typesIn(round.getRootElements())) {
  69             IAm anno = t.getAnnotation(IAm.class);
  70             if (anno != null)
  71                 checkAnno(anno);
  72         }
  73     }
  74 
  75     private void checkAnno(IAm anno) {
  76         try {
  77             anno.value();
  78             throw new AssertionError();
  79         } catch (MirroredTypeException e) {
  80             System.out.println("Looking for checkAnno in this stack trace:");
  81             e.printStackTrace();
  82             for (StackTraceElement frame : e.getStackTrace()) {
  83                 if (frame.getMethodName() == "checkAnno")
  84                     return;
  85             }
  86             throw new AssertionError();
  87         }
  88     }
  89 }
  90 
  91 @interface IAm {
  92     Class<?> value();
  93 }