/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2012 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
#include <fstream>
#include <string>
-#include "move.h"
#include "position.h"
#include "rkiss.h"
-// A Polyglot book is a series of "entries" of 16 bytes. All integers are
-// stored highest byte first (regardless of size). The entries are ordered
-// according to key. Lowest key first.
+/// A Polyglot book is a series of "entries" of 16 bytes. All integers are
+/// stored highest byte first (regardless of size). The entries are ordered
+/// according to key. Lowest key first.
struct BookEntry {
uint64_t key;
uint16_t move;
uint32_t learn;
};
-class Book {
+
+class Book : private std::ifstream {
public:
Book();
~Book();
- void open(const std::string& fileName);
- void close();
- Move get_move(const Position& pos, bool findBestMove);
- const std::string name() const { return bookName; }
+ Move probe(const Position& pos, const std::string& fName, bool pickBest);
private:
template<typename T> Book& operator>>(T& n);
- BookEntry read_entry(int idx);
- int first_entry(uint64_t key);
+ bool open(const char* fName);
+ void binary_search(uint64_t key);
- std::ifstream bookFile;
- std::string bookName;
- int bookSize;
RKISS RKiss;
+ std::string fileName;
+ size_t size;
};
#endif // !defined(BOOK_H_INCLUDED)