content: /*
   * Copyright 2007-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License").
   * You may not use this file except in compliance with the License.
   * A copy of the License is located at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * or in the "license" file accompanying this file. This file is distributed
   * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
   * express or implied. See the License for the specific language governing
   * permissions and limitations under the License.
   */
  
  package com.amazon.ion.impl;
  
  import com.amazon.ion.util._Private_FastAppendable;
  import java.io.Closeable;
  import java.io.Flushable;
  import java.io.IOException;
  
  /**
   * Adapts an {@link Appendable} to implement {@link _Private_FastAppendable}.
   */
  final class AppendableFastAppendable
      implements _Private_FastAppendable, Closeable, Flushable
  {
      private final Appendable _out;
  
      AppendableFastAppendable(Appendable out)
      {
          out.getClass(); // Efficient null check
  
          _out = out;
      }
  
      public Appendable append(CharSequence csq)
          throws IOException
      {
          _out.append(csq);
          return this;
      }
  
      public Appendable append(char c)
          throws IOException
      {
          _out.append(c);
          return this;
      }
  
      public Appendable append(CharSequence csq, int start, int end)
          throws IOException
      {
          _out.append(csq, start, end);
          return this;
      }
  
      public final void appendAscii(char c)
          throws IOException
      {
          _out.append(c);
      }
  
      public final void appendAscii(CharSequence csq)
          throws IOException
      {
          _out.append(csq);
      }
  
      public final void appendAscii(CharSequence csq, int start, int end)
          throws IOException
      {
          _out.append(csq, start, end);
      }
  
      public final void appendUtf16(char c)
          throws IOException
      {
          _out.append(c);
      }
  
      public final void appendUtf16Surrogate(char leadSurrogate,
                                             char trailSurrogate)
          throws IOException
      {
          _out.append(leadSurrogate);
          _out.append(trailSurrogate);
      }
  
      public void flush()
          throws IOException
      {
          if (_out instanceof Flushable)
          {
              ((Flushable)_out).flush();
          }
      }
  
      public void close() throws IOException
      {
          if (_out instanceof Closeable)
          {
              ((Closeable)_out).close();
          }
      }
  }
  