1 /* 2 * Copyright (C) 2015 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.runner; 18 19 import com.google.caliper.api.ResultProcessor; 20 import java.lang.reflect.Constructor; 21 import java.lang.reflect.InvocationTargetException; 22 23 /** 24 * Responsible for creating instances of configured {@link ResultProcessor}. 25 */ 26 final class ResultProcessorCreator { 27 28 public static final String NO_PUBLIC_DEFAULT_CONSTRUCTOR = 29 "ResultProcessor %s not supported as it does not have a public default constructor"; 30 31 private ResultProcessorCreator() { 32 } 33 34 static ResultProcessor createResultProcessor(Class<? extends ResultProcessor> processorClass) { 35 ResultProcessor resultProcessor; 36 37 try { 38 Constructor<? extends ResultProcessor> constructor = processorClass.getConstructor(); 39 resultProcessor = constructor.newInstance(); 40 } catch (NoSuchMethodException e) { 41 throw new UserCodeException(String.format(NO_PUBLIC_DEFAULT_CONSTRUCTOR, processorClass), e); 42 } catch (InvocationTargetException e) { 43 throw new UserCodeException("ResultProcessor %s could not be instantiated", e.getCause()); 44 } catch (InstantiationException e) { 45 throw new UserCodeException("ResultProcessor %s could not be instantiated", e); 46 } catch (IllegalAccessException e) { 47 throw new UserCodeException("ResultProcessor %s could not be instantiated", e); 48 } 49 50 return resultProcessor; 51 } 52 } 53
