word_in_list.cc

unordered_map<string, int> word_to_occurrence;

// Build map before line 755 in query.cc by calling the method build_word_map. 

void build_word_map(const string& list) {
    string word;
    int count = 0;

    for (size_t i = 0; i <= list.length(); ++i)
    {
      if (list[i] == '\t' || list[i] == '\0')
      {
        if (word_to_occurrence.find(word) == word_to_occurrence.end())
        {
          word_to_occurrence[word] = count++;
          word.clear();
        }
      } else
          word += list[i];
  }
}

static int word_in_list(const string& word)
{
  if (word_to_occurrence.find(word) != word_to_occurrence.end())
    return word_to_occurrence[word];
  else
    return -1;
}