Method pop

ext/include/llvm/Support/FileSystem.h:1407–1424

modifiers Goes up one level if Level > 0.

  // modifiers
  /// Goes up one level if Level > 0.
  void pop() {
    assert(State && "Cannot pop an end iterator!");
    assert(State->Level > 0 && "Cannot pop an iterator with level < 1");

    const directory_iterator end_itr = {};
    std::error_code ec;
    do {
      if (ec)
        report_fatal_error("Error incrementing directory iterator.");
      State->Stack.pop();
      --State->Level;
    } while (!State->Stack.empty()
             && State->Stack.top().increment(ec) == end_itr);

    // Check if we are done. If so, create an end iterator.
    if (State->Stack.empty())
      State.reset();
  }

  /// Does not go down into the current directory_entry.
  void no_push() { State->HasNoPushRequest = true; }