/*
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 : private std::ifstream {
- Book(const Book&); // just decleared..
- Book& operator=(const Book&); // ..to avoid a warning
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:
- // read n chars from the file stream and converts them in an
- // integer number. Integers are stored with highest byte first.
- template<int n> uint64_t get_int();
-
- template<typename T>
- Book& operator>>(T& n) { n = (T)get_int<sizeof(T)>(); return *this; }
+ template<typename T> Book& operator>>(T& n);
- BookEntry read_entry(int idx);
- int find_entry(uint64_t key);
+ bool open(const char* fName);
+ void binary_search(uint64_t key);
- std::string bookName;
- int bookSize;
RKISS RKiss;
+ std::string fileName;
+ size_t size;
};
-// Yes, we indulge a bit here ;-)
-template<int n> inline uint64_t Book::get_int() { return 256 * get_int<n-1>() + get(); }
-template<> inline uint64_t Book::get_int<1>() { return get(); }
-
-
#endif // !defined(BOOK_H_INCLUDED)