FOR_EACH Parallel MatchDocument

tuple<vector<string>, DocumentStatus> SearchServer::MatchDocument(execution::parallel_policy policy,
    const string& raw_query, int document_id) const {
    if (!IsValidWord(raw_query)) {
        throw invalid_argument("Некорректный поисковый запрос.");
    }
    if (document_id < 0) {
        throw out_of_range("Документа с указанным id не существует.");
    }
    const Query query = ParseQuery(raw_query);
    vector<string> matched_words;

    for_each(policy, query.plus_words.begin(), query.plus_words.end(),
        [this, &matched_words, document_id](const string& plus_word) {
            if (word_frequencies_in_document_.at(document_id).count(plus_word)) {
                matched_words.push_back(plus_word);
            }
        });

    for_each(policy, query.minus_words.begin(), query.minus_words.end(),
        [this, &matched_words, document_id](const string& minus_word) {
            if (word_frequencies_in_document_.at(document_id).count(minus_word)) {
                matched_words.clear();
            }
        });


    return { matched_words, documents_.at(document_id).status };
}