FilteredTargetMap.java 文件源码

private Collection<TargetIdeInfo> targetsForSourceFileImpl(
    ImmutableMultimap<TargetKey, TargetKey> rdepsMap, File sourceFile) {
  List<TargetIdeInfo> result = Lists.newArrayList();
  Collection<TargetKey> roots = rootsMap.get(sourceFile);

  Queue<TargetKey> todo = Queues.newArrayDeque();
  todo.addAll(roots);
  Set<TargetKey> seen = Sets.newHashSet();
  while (!todo.isEmpty()) {
    TargetKey targetKey = todo.remove();
    if (!seen.add(targetKey)) {
      continue;
    }

    TargetIdeInfo target = targetMap.get(targetKey);
    if (filter.test(target)) {
      result.add(target);
    }
    todo.addAll(rdepsMap.get(targetKey));
  }
  return result;
}