Method equalsImpl

corpus/java/training/guava/collect/Lists.java:997–1020

An implementation of List#equals(Object).

(List<?> thisList, @Nullable Object other)

   * An implementation of {@link List#equals(Object)}.
   */
  static boolean equalsImpl(List<?> thisList, @Nullable Object other) {
    if (other == checkNotNull(thisList)) {
      return true;
    }
    if (!(other instanceof List)) {
      return false;
    }
    List<?> otherList = (List<?>) other;
    int size = thisList.size();
    if (size != otherList.size()) {
      return false;
    }
    if (thisList instanceof RandomAccess && otherList instanceof RandomAccess) {
      // avoid allocation and use the faster loop
      for (int i = 0; i < size; i++) {
        if (!Objects.equal(thisList.get(i), otherList.get(i))) {
          return false;
        }
      }
      return true;
    } else {
      return Iterators.elementsEqual(thisList.iterator(), otherList.iterator());
    }
  }

  /**
   * An implementation of {@link List#addAll(int, Collection)}.