class BagOfPrimitivesDeserializationBenchmark {

  private Gson gson;
  private String json;

  public static void main(String[] args) {
    NonUploadingCaliperRunner.run(BagOfPrimitivesDeserializationBenchmark.class, args);
  }

  @BeforeExperiment
  void setUp() throws Exception {
    this.gson = new Gson();
    BagOfPrimitives bag = new BagOfPrimitives(10L, 1, false, "foo");
    this.json = gson.toJson(bag);
  }

  /** Benchmark to measure Gson performance for deserializing an object */
  public void timeBagOfPrimitivesDefault(int reps) {
    for (int i = 0; i < reps; ++i) {
      gson.fromJson(json, BagOfPrimitives.class);
    }
  }

  /** Benchmark to measure deserializing objects by hand */
  public void timeBagOfPrimitivesStreaming(int reps) throws IOException {<FILL_FUNCTION_BODY>}

  /**
   * This benchmark measures the ideal Gson performance: the cost of parsing a JSON stream and
   * setting object values by reflection. We should strive to reduce the discrepancy between this
   * and {@link #timeBagOfPrimitivesDefault(int)} .
   */
  public void timeBagOfPrimitivesReflectionStreaming(int reps) throws Exception {
    for (int i = 0; i < reps; ++i) {
      StringReader reader = new StringReader(json);
      JsonReader jr = new JsonReader(reader);
      jr.beginObject();
      BagOfPrimitives bag = new BagOfPrimitives();
      while (jr.hasNext()) {
        String name = jr.nextName();
        for (Field field : BagOfPrimitives.class.getDeclaredFields()) {
          if (field.getName().equals(name)) {
            Class<?> fieldType = field.getType();
            if (fieldType.equals(long.class)) {
              field.setLong(bag, jr.nextLong());
            } else if (fieldType.equals(int.class)) {
              field.setInt(bag, jr.nextInt());
            } else if (fieldType.equals(boolean.class)) {
              field.setBoolean(bag, jr.nextBoolean());
            } else if (fieldType.equals(String.class)) {
              field.set(bag, jr.nextString());
            } else {
              throw new RuntimeException("Unexpected: type: " + fieldType + ", name: " + name);
            }
          }
        }
      }
      jr.endObject();
    }
  }
}

    for (int i = 0; i < reps; ++i) {
      StringReader reader = new StringReader(json);
      JsonReader jr = new JsonReader(reader);
      jr.beginObject();
      long longValue = 0;
      int intValue = 0;
      boolean booleanValue = false;
      String stringValue = null;
      while (jr.hasNext()) {
        String name = jr.nextName();
        if (name.equals("longValue")) {
          longValue = jr.nextLong();
        } else if (name.equals("intValue")) {
          intValue = jr.nextInt();
        } else if (name.equals("booleanValue")) {
          booleanValue = jr.nextBoolean();
        } else if (name.equals("stringValue")) {
          stringValue = jr.nextString();
        } else {
          throw new IOException("Unexpected name: " + name);
        }
      }
      jr.endObject();
      new BagOfPrimitives(longValue, intValue, booleanValue, stringValue);
    }
  
<no_super_class>