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.options.CaliperOptions;
20 import com.google.caliper.util.InvalidCommandException;
21 import com.google.caliper.util.Util;
22 import dagger.Module;
23 import dagger.Provides;
24 import javax.inject.Singleton;
25 
26 /**
27  * Provides bindings to integrate other modules into the {@link MainComponent}.
28  */
29 @Module
30 class MainModule {
31 
benchmarkClassForName(String className)32   private static Class<?> benchmarkClassForName(String className)
33       throws InvalidCommandException, UserCodeException {
34     try {
35       return Util.lenientClassForName(className);
36     } catch (ClassNotFoundException e) {
37       throw new InvalidCommandException("Benchmark class not found: " + className);
38     } catch (ExceptionInInitializerError e) {
39       throw new UserCodeException(
40           "Exception thrown while initializing class '" + className + "'", e.getCause());
41     } catch (NoClassDefFoundError e) {
42       throw new UserCodeException("Unable to load " + className, e);
43     }
44   }
45 
46   @Provides
47   @Singleton
48   @Running.BenchmarkClass
provideBenchmarkClass(CaliperOptions options)49   static Class<?> provideBenchmarkClass(CaliperOptions options) {
50     return benchmarkClassForName(options.benchmarkClassName());
51   }
52 }
53