Fix compilation after recent merge.

[stockfish] / src / movegen.h

diff --git a/src/movegen.h b/src/movegen.h
index 16923dcc6ad0ca0a73a4e1bcec4341a83b76699b..9a39d1c50ea299ce53c44d1de7e38b78ee9556ae 100644 (file)
--- a/src/movegen.h
+++ b/src/movegen.h
@@ -1,41 +1,76 @@
 /*
-  Glaurung, a UCI chess playing engine.
-  Copyright (C) 2004-2008 Tord Romstad
+  Stockfish, a UCI chess playing engine derived from Glaurung 2.1
+  Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
 
-  Glaurung is free software: you can redistribute it and/or modify
+  Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-  
-  Glaurung is distributed in the hope that it will be useful,
+
+  Stockfish is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-  
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-
-#if !defined(MOVEGEN_H_INCLUDED)
+#ifndef MOVEGEN_H_INCLUDED
 #define MOVEGEN_H_INCLUDED
 
-////
-//// Includes
-////
+#include <algorithm>  // IWYU pragma: keep
+#include <cstddef>
+
+#include "types.h"
+
+namespace Stockfish {
+
+class Position;
+
+enum GenType {
+    CAPTURES,
+    QUIETS,
+    QUIET_CHECKS,
+    EVASIONS,
+    NON_EVASIONS,
+    LEGAL
+};
+
+struct ExtMove {
+    Move move;
+    int  value;
+
+    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; }
+
+template<GenType>
+ExtMove* generate(const Position& pos, ExtMove* moveList);
 
-#include "position.h"
+// 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 { return std::find(begin(), end(), move) != end(); }
 
-////
-//// Prototypes
-////
+   private:
+    ExtMove moveList[MAX_MOVES], *last;
+};
 
-extern int generate_captures(const Position &pos, MoveStack *mlist);
-extern int generate_noncaptures(const Position &pos, MoveStack *mlist);
-extern int generate_checks(const Position &pos, MoveStack *mlist, Bitboard dc);
-extern int generate_evasions(const Position &pos, MoveStack *mlist);
-extern int generate_legal_moves(const Position &pos, MoveStack *mlist);
-extern Move generate_move_if_legal(const Position &pos, Move m, Bitboard pinned);
+}  // namespace Stockfish
 
-#endif // !defined(MOVEGEN_H_INCLUDED)
+#endif  // #ifndef MOVEGEN_H_INCLUDED