/*
    * Copyright (c) 2006 JMockit developers
    * This file is subject to the terms of the MIT license (see LICENSE.txt).
    */
   package mockit.internal.reflection;
   
   import static mockit.internal.reflection.ParameterReflection.NO_PARAMETERS;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
  import edu.umd.cs.findbugs.annotations.Nullable;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  
  public final class AnnotationReflection {
      private AnnotationReflection() {
      }
  
      @NonNull
      public static String readAnnotationAttribute(@NonNull Object annotationInstance, @NonNull String attributeName) {
          try {
              return readAttribute(annotationInstance, attributeName);
          } catch (NoSuchMethodException e) {
              throw new RuntimeException(e);
          }
      }
  
      @Nullable
      public static String readAnnotationAttributeIfAvailable(@NonNull Object annotationInstance,
              @NonNull String attributeName) {
          try {
              return readAttribute(annotationInstance, attributeName);
          } catch (NoSuchMethodException e) {
              return null;
          }
      }
  
      @NonNull
      private static String readAttribute(@NonNull Object annotationInstance, @NonNull String attributeName)
              throws NoSuchMethodException {
          try {
              Method publicMethod = annotationInstance.getClass().getMethod(attributeName, NO_PARAMETERS);
              return (String) publicMethod.invoke(annotationInstance);
          } catch (IllegalAccessException e) {
              throw new RuntimeException(e);
          } catch (InvocationTargetException e) {
              throw new RuntimeException(e.getCause());
          }
      }
  }