public Object encode()

in firebase-functions/src/main/java/com/google/firebase/functions/Serializer.java [47:134]
84 lines of code
22 McCabe index (conditional complexity)

  public Object encode(Object obj) {
    if (obj == null || obj == JSONObject.NULL) {
      return JSONObject.NULL;
    }
    if (obj instanceof Long) {
      // JavaScript can't handle the full range of a long, so we use a wrapped string.
      JSONObject wrapped = new JSONObject();
      try {
        wrapped.put("@type", LONG_TYPE);
        wrapped.put("value", obj.toString());
      } catch (JSONException e) {
        // This should never happen.
        throw new RuntimeException("Error encoding Long.", e);
      }
      return wrapped;
    }
    if (obj instanceof Number) {
      return obj;
    }
    if (obj instanceof String) {
      return obj;
    }
    if (obj instanceof Boolean) {
      return obj;
    }
    if (obj instanceof JSONObject) {
      return obj;
    }
    if (obj instanceof JSONArray) {
      return obj;
    }
    if (obj instanceof Map) {
      JSONObject result = new JSONObject();
      Map<?, ?> m = (Map<?, ?>) obj;
      for (Object k : m.keySet()) {
        if (!(k instanceof String)) {
          throw new IllegalArgumentException("Object keys must be strings.");
        }
        String key = (String) k;
        Object value = encode(m.get(k));
        try {
          result.put(key, value);
        } catch (JSONException e) {
          // This should never happen.
          throw new RuntimeException(e);
        }
      }
      return result;
    }
    if (obj instanceof List) {
      JSONArray result = new JSONArray();
      List<?> l = (List<?>) obj;
      for (Object o : l) {
        result.put(encode(o));
      }
      return result;
    }
    if (obj instanceof JSONObject) {
      JSONObject result = new JSONObject();
      JSONObject m = (JSONObject) obj;
      Iterator<String> keys = m.keys();
      while (keys.hasNext()) {
        String k = keys.next();
        if (k == null) {
          throw new IllegalArgumentException("Object keys cannot be null.");
        }
        String key = (String) k;
        Object value = encode(m.opt(k));
        try {
          result.put(key, value);
        } catch (JSONException e) {
          // This should never happen.
          throw new RuntimeException(e);
        }
      }
      return result;
    }
    if (obj instanceof JSONArray) {
      JSONArray result = new JSONArray();
      JSONArray l = (JSONArray) obj;
      for (int i = 0; i < l.length(); i++) {
        Object o = l.opt(i);
        result.put(encode(o));
      }
      return result;
    }
    throw new IllegalArgumentException("Object cannot be encoded in JSON: " + obj);
  }