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// Container for words info to build system dictionary

#ifndef MOZC_DICTIONARY_SYSTEM_WORDS_INFO_H_
#define MOZC_DICTIONARY_SYSTEM_WORDS_INFO_H_

namespace mozc {
struct Token;

namespace dictionary {
// TODO(toshiyuki): These could be implemented by protobuf

// Represents each token info
struct TokenInfo {
  enum PosType {
    DEFAULT_POS = 0,
    FREQUENT_POS = 1,
    SAME_AS_PREV_POS = 2,
    POS_TYPE_SIZE = 3,
  };
  enum ValueType {
    DEFAULT_VALUE = 0,
    // value is same as prev token's value
    SAME_AS_PREV_VALUE = 1,
    // value is same as key
    AS_IS_HIRAGANA = 2,
    // we can get the value by converting key to katakana form.
    AS_IS_KATAKANA = 3,
    VALUE_TYPE_SIZE = 4,
  };
  enum CostType {
    DEFAULT_COST = 0,
    CAN_USE_SMALL_ENCODING = 1,
    COST_TYPE_SIZE = 2,
  };
  explicit TokenInfo(Token *t) {
    Clear();
    token = t;
  }
  void Clear() {
    token = NULL;
    id_in_value_trie = -1;
    id_in_frequent_pos_map = -1;
    pos_type = DEFAULT_POS;
    value_type = DEFAULT_VALUE;
    cost_type = DEFAULT_COST;
  }
  // Do not delete |token| in destructor, because |token| can be
  // on-memory object owned by other module.
  // TODO(toshiyuki): Make it more simple structure by;
  // 1) Making subclass which deletes token, or
  // 2) Modifying text_dictionary_loader not to handle the ownership for token

  // original token
  Token *token;
  // id of the value(=word) string in value trie
  int id_in_value_trie;
  // id of the pos map
  int id_in_frequent_pos_map;
  // POS type for encoding
  PosType pos_type;
  ValueType value_type;
  CostType cost_type;
};

// Represents words info for a certain key(=reading).
struct KeyInfo {
  KeyInfo() : id_in_key_trie(-1) {}
  // id of the key(=reading) string in key trie
  int id_in_key_trie;
  vector<TokenInfo> tokens;
};
}  // namespace dictionary
}  // namespace mozc

#endif  // MOZC_DICTIONARY_SYSTEM_WORDS_INFO_H_