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#ifndef MOZC_DICTIONARY_USER_POS_INTERFACE_H_
#define MOZC_DICTIONARY_USER_POS_INTERFACE_H_

#include <string>
#include <vector>

#include "base/port.h"

namespace mozc {

// Interface of the helper class used by POS.
class UserPOSInterface {
 public:
  struct Token {
    string key;
    string value;
    uint16 id;
    int16  cost;
    string comment;  // This field comes from user dictionary.
  };

  virtual ~UserPOSInterface() {}

  // Sets posssible list of part-of-speech Mozc can handle
  virtual void GetPOSList(vector<string> *pos_list) const = 0;

  // Returns true if the given string is one of the POSes Mozc can handle.
  virtual bool IsValidPOS(const string &pos) const = 0;

  // Returns iid from Mozc POS. If the pos has inflection, this method only
  // returns the ids of base form.
  virtual bool GetPOSIDs(const string &pos, uint16 *id) const = 0;

  // Converts the given tuple (key, value, pos) to Token.  If the pos has
  // inflection, this function expands possible inflections automatically.
  virtual bool GetTokens(const string &key,
                         const string &value,
                         const string &pos,
                         vector<Token> *tokens) const = 0;

 protected:
  UserPOSInterface() {}

 private:
  DISALLOW_COPY_AND_ASSIGN(UserPOSInterface);
};

}  // namespace mozc

#endif  // MOZC_DICTIONARY_USER_POS_INTERFACE_H_