Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2015-2016 Marco Costalba, Joona Kiiski, Gary Linscott, 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 <cassert>
#include <cstddef> // For offsetof()
+#include <deque>
+#include <memory> // For std::unique_ptr
#include <string>
+#include <vector>
#include "bitboard.h"
#include "types.h"
class Position;
-struct Thread;
+class Thread;
namespace PSQT {
void init();
}
-/// CheckInfo struct is initialized at constructor time and keeps info used to
+/// CheckInfo struct is initialized at constructor time and keeps info used to
/// detect if a move gives check.
struct CheckInfo {
StateInfo* previous;
};
+// In a std::deque references to elements are unaffected upon resizing
+typedef std::unique_ptr<std::deque<StateInfo>> StateListPtr;
+
/// Position class stores information regarding the board representation as
/// pieces, side to move, hash keys, castling info, etc. Important methods are
class Position {
- friend std::ostream& operator<<(std::ostream&, const Position&);
-
public:
static void init();
- Position() = default; // To define the global object RootPos
+ Position() = default;
Position(const Position&) = delete;
- Position(const Position& pos, Thread* th) { *this = pos; thisThread = th; }
- Position(const std::string& f, bool c960, Thread* th) { set(f, c960, th); }
- Position& operator=(const Position&); // To assign RootPos from UCI
+ Position& operator=(const Position&) = delete;
// FEN string input/output
- void set(const std::string& fenStr, bool isChess960, Thread* th);
+ Position& set(const std::string& fenStr, bool isChess960, StateInfo* si, Thread* th);
const std::string fen() const;
// Position representation
private:
// Initialization helpers (used while setting up a position)
- void clear();
void set_castling_right(Color c, Square rfrom);
void set_state(StateInfo* si) const;
int castlingRightsMask[SQUARE_NB];
Square castlingRookSquare[CASTLING_RIGHT_NB];
Bitboard castlingPath[CASTLING_RIGHT_NB];
- StateInfo startState;
uint64_t nodes;
int gamePly;
Color sideToMove;
bool chess960;
};
+extern std::ostream& operator<<(std::ostream& os, const Position& pos);
+
inline Color Position::side_to_move() const {
return sideToMove;
}