/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2016 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#ifndef MOVEGEN_H_INCLUDED
#define MOVEGEN_H_INCLUDED
+#include <algorithm> // IWYU pragma: keep
+#include <cstddef>
+
#include "types.h"
+namespace Stockfish {
+
class Position;
enum GenType {
- CAPTURES,
- QUIETS,
- QUIET_CHECKS,
- EVASIONS,
- NON_EVASIONS,
- LEGAL
+ CAPTURES,
+ QUIETS,
+ QUIET_CHECKS,
+ EVASIONS,
+ NON_EVASIONS,
+ LEGAL
};
struct ExtMove {
- Move move;
- Value value;
+ Move move;
+ int value;
+
+ operator Move() const { return move; }
+ void operator=(Move m) { move = m; }
- operator Move() const { return move; }
- void operator=(Move m) { move = m; }
+ // Inhibit unwanted implicit conversions to Move
+ // with an ambiguity that yields to a compile error.
+ operator float() const = delete;
};
-inline bool operator<(const ExtMove& f, const ExtMove& s) {
- return f.value < s.value;
-}
+inline bool operator<(const ExtMove& f, const ExtMove& s) { return f.value < s.value; }
template<GenType>
ExtMove* generate(const Position& pos, ExtMove* moveList);
-/// The MoveList struct is a simple wrapper around generate(). It sometimes comes
-/// in handy to use this class instead of the low level generate() function.
+// The MoveList struct wraps the generate() function and returns a convenient
+// list of moves. Using MoveList is sometimes preferable to directly calling
+// the lower level generate() function.
template<GenType T>
struct MoveList {
- explicit MoveList(const Position& pos) : last(generate<T>(pos, moveList)) {}
- const ExtMove* begin() const { return moveList; }
- const ExtMove* end() const { return last; }
- size_t size() const { return last - moveList; }
- bool contains(Move move) const {
- for (const auto& m : *this) if (m == move) return true;
- return false;
- }
-
-private:
- ExtMove moveList[MAX_MOVES], *last;
+ explicit MoveList(const Position& pos) :
+ last(generate<T>(pos, moveList)) {}
+ const ExtMove* begin() const { return moveList; }
+ const ExtMove* end() const { return last; }
+ size_t size() const { return last - moveList; }
+ bool contains(Move move) const { return std::find(begin(), end(), move) != end(); }
+
+ private:
+ ExtMove moveList[MAX_MOVES], *last;
};
-#endif // #ifndef MOVEGEN_H_INCLUDED
+} // namespace Stockfish
+
+#endif // #ifndef MOVEGEN_H_INCLUDED