/*
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) 2008-2014 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
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-
-/*
- The code in this file is based on the opening book code in PolyGlot
- by Fabien Letouzey. PolyGlot is available under the GNU General
- Public License, and can be downloaded from http://wbec-ridderkerk.nl
-*/
-
-
-#if !defined(BOOK_H_INCLUDED)
+#ifndef BOOK_H_INCLUDED
#define BOOK_H_INCLUDED
-
-////
-//// Includes
-////
-
#include <fstream>
#include <string>
-#include "move.h"
#include "position.h"
+#include "rkiss.h"
-
-////
-//// Types
-////
-
-struct BookEntry {
- uint64_t key;
- uint16_t move;
- uint16_t count;
- uint16_t n;
- uint16_t sum;
-};
-
-class Book : private std::ifstream {
-
+class PolyglotBook : private std::ifstream {
public:
- void open(const std::string& fName);
- void close();
- const std::string file_name() const;
- Move get_move(const Position& pos);
+ PolyglotBook();
+ ~PolyglotBook();
+ Move probe(const Position& pos, const std::string& fName, bool pickBest);
private:
- 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; }
+ template<typename T> PolyglotBook& operator>>(T& n);
- uint64_t read_integer(int size);
- void read_entry(BookEntry& e, int n);
- int find_key(uint64_t key);
+ bool open(const char* fName);
+ size_t find_first(Key key);
+ RKISS rkiss;
std::string fileName;
- int bookSize;
};
-
-////
-//// Global variables
-////
-
-extern Book OpeningBook;
-
-
-#endif // !defined(BOOK_H_INCLUDED)
+#endif // #ifndef BOOK_H_INCLUDED