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      1 /*
      2  * Copyright (C) 2013 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.google.caliper.util;
     18 
     19 import com.google.common.collect.ImmutableSet;
     20 
     21 import java.lang.annotation.Annotation;
     22 import java.lang.reflect.Method;
     23 
     24 /**
     25  * A utility class for common reflection operations in Caliper.
     26  */
     27 public final class Reflection {
     28   private Reflection() {}
     29 
     30   public static ImmutableSet<Method> getAnnotatedMethods(Class<?> clazz,
     31       Class<? extends Annotation> annotationClass) {
     32     Method[] methods = clazz.getDeclaredMethods();
     33     ImmutableSet.Builder<Method> builder = ImmutableSet.builder();
     34     for (Method method : methods) {
     35       if (method.isAnnotationPresent(annotationClass)) {
     36         method.setAccessible(true);
     37         builder.add(method);
     38       }
     39     }
     40     return builder.build();
     41   }
     42 }
     43