Retire linear imbalance

[stockfish] / src / movegen.h

diff --git a/src/movegen.h b/src/movegen.h
index 16923dcc6ad0ca0a73a4e1bcec4341a83b76699b..2721f152419b6d765b621551dba308e69b3a326a 100644 (file)
--- a/src/movegen.h
+++ b/src/movegen.h
@@ -1,41 +1,70 @@
 /*
-  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) 2004-2008 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
 
-  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 "types.h"
+
+class Position;
+
+enum GenType {
+  CAPTURES,
+  QUIETS,
+  QUIET_CHECKS,
+  EVASIONS,
+  NON_EVASIONS,
+  LEGAL
+};
+
+struct ExtMove {
+  Move move;
+  Value value;
+
+  operator Move() const { return move; }
+  void operator=(Move m) { move = m; }
+};
+
+inline bool operator<(const ExtMove& f, const ExtMove& s) {
+  return f.value < s.value;
+}
 
-#include "position.h"
+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.
+template<GenType T>
+struct MoveList {
 
-////
-//// Prototypes
-////
+  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;
+  }
 
-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);
+private:
+  ExtMove moveList[MAX_MOVES], *last;
+};
 
-#endif // !defined(MOVEGEN_H_INCLUDED)
+#endif // #ifndef MOVEGEN_H_INCLUDED