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      1 /*
      2  * Copyright (C) 2007 The Guava Authors
      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.common.testing;
     18 
     19 import static com.google.common.base.Preconditions.checkNotNull;
     20 
     21 import com.google.common.annotations.GwtCompatible;
     22 
     23 import java.io.ByteArrayInputStream;
     24 import java.io.ByteArrayOutputStream;
     25 import java.io.IOException;
     26 import java.io.ObjectInputStream;
     27 import java.io.ObjectOutputStream;
     28 
     29 /**
     30  * Methods factored out so that they can be emulated differently in GWT.
     31  *
     32  * @author Chris Povirk
     33  */
     34 @GwtCompatible(emulated = true)
     35 final class Platform {
     36   /**
     37    * Serializes and deserializes the specified object.
     38    */
     39   @SuppressWarnings("unchecked")
     40   static <T> T reserialize(T object) {
     41     checkNotNull(object);
     42     ByteArrayOutputStream bytes = new ByteArrayOutputStream();
     43     try {
     44       ObjectOutputStream out = new ObjectOutputStream(bytes);
     45       out.writeObject(object);
     46       ObjectInputStream in = new ObjectInputStream(
     47           new ByteArrayInputStream(bytes.toByteArray()));
     48       return (T) in.readObject();
     49     } catch (IOException e) {
     50       throw new RuntimeException(e);
     51     } catch (ClassNotFoundException e) {
     52       throw new RuntimeException(e);
     53     }
     54   }
     55 
     56   private Platform() {}
     57 }
     58