TagContext.java 文件源码

/**
 * Returns true iff the other object is an instance of {@code TagContext} and contains the same
 * key-value pairs. Implementations are free to override this method to provide better
 * performance.
 */
@Override
public boolean equals(@Nullable Object other) {
  if (!(other instanceof TagContext)) {
    return false;
  }
  TagContext otherTags = (TagContext) other;
  Iterator<Tag> iter1 = getIterator();
  Iterator<Tag> iter2 = otherTags.getIterator();
  Multiset<Tag> tags1 =
      iter1 == null
          ? ImmutableMultiset.<Tag>of()
          : HashMultiset.create(Lists.<Tag>newArrayList(iter1));
  Multiset<Tag> tags2 =
      iter2 == null
          ? ImmutableMultiset.<Tag>of()
          : HashMultiset.create(Lists.<Tag>newArrayList(iter2));
  return tags1.equals(tags2);
}