/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008 Marco Costalba
+ Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
uint16_t sum;
};
-class Book {
-
+class Book : private std::ifstream {
+ Book(const Book&); // just decleared..
+ Book& operator=(const Book&); // ..to avoid a warning
public:
- // Constructors
- Book();
-
- // Open and close book files
- void open(const std::string &fName);
+ Book() {}
+ ~Book();
+ void open(const std::string& fName);
void close();
-
- // Testing if a book is opened
- bool is_open() const;
-
- // The file name of the currently active book
- const std::string file_name() const;
-
- // Get a book move for a given position
- Move get_move(const Position &pos) const;
+ const std::string file_name();
+ Move get_move(const Position& pos, bool findBestMove);
private:
- int find_key(uint64_t key) const;
- void read_entry(BookEntry &entry, int n) const;
+ Book& operator>>(uint64_t& n) { n = read_integer(8); return *this; }
+ Book& operator>>(uint16_t& n) { n = (uint16_t)read_integer(2); return *this; }
+ void operator>>(BookEntry& e) { *this >> e.key >> e.move >> e.count >> e.n >> e.sum; }
+
+ uint64_t read_integer(int size);
+ void read_entry(BookEntry& e, int n);
+ int find_key(uint64_t key);
std::string fileName;
- mutable std::ifstream bookFile;
int bookSize;
};