Java

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/*
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 * Copyright (C) 2007 The Guava Authors
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 * http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.google.common.testing;
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import static com.google.common.base.Preconditions.checkNotNull;
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import static java.util.Objects.requireNonNull;
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import com.google.common.annotations.GwtCompatible;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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/**
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 * Methods factored out so that they can be emulated differently in GWT.
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 *
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 * @author Chris Povirk
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 */
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@GwtCompatible(emulated = true)
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@ElementTypesAreNonnullByDefault
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final class Platform {
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  /** Serializes and deserializes the specified object. */
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  @SuppressWarnings("unchecked")
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  static <T> T reserialize(T object) {
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    checkNotNull(object);
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    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
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    try {
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      ObjectOutputStream out = new ObjectOutputStream(bytes);
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      out.writeObject(object);
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      ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes.toByteArray()));
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      return (T) requireNonNull(in.readObject());
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    } catch (IOException | ClassNotFoundException e) {
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      throw new RuntimeException(e);
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    }
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  }
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  private Platform() {}
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}
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