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Member "stockfish-11-linux/src/movegen.h" (18 Jan 2020, 2162 Bytes) of package /linux/privat/stockfish-11-linux.zip:


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    1 /*
    2   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
    3   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
    4   Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
    5   Copyright (C) 2015-2020 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
    6 
    7   Stockfish is free software: you can redistribute it and/or modify
    8   it under the terms of the GNU General Public License as published by
    9   the Free Software Foundation, either version 3 of the License, or
   10   (at your option) any later version.
   11 
   12   Stockfish is distributed in the hope that it will be useful,
   13   but WITHOUT ANY WARRANTY; without even the implied warranty of
   14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15   GNU General Public License for more details.
   16 
   17   You should have received a copy of the GNU General Public License
   18   along with this program.  If not, see <http://www.gnu.org/licenses/>.
   19 */
   20 
   21 #ifndef MOVEGEN_H_INCLUDED
   22 #define MOVEGEN_H_INCLUDED
   23 
   24 #include <algorithm>
   25 
   26 #include "types.h"
   27 
   28 class Position;
   29 
   30 enum GenType {
   31   CAPTURES,
   32   QUIETS,
   33   QUIET_CHECKS,
   34   EVASIONS,
   35   NON_EVASIONS,
   36   LEGAL
   37 };
   38 
   39 struct ExtMove {
   40   Move move;
   41   int value;
   42 
   43   operator Move() const { return move; }
   44   void operator=(Move m) { move = m; }
   45 
   46   // Inhibit unwanted implicit conversions to Move
   47   // with an ambiguity that yields to a compile error.
   48   operator float() const = delete;
   49 };
   50 
   51 inline bool operator<(const ExtMove& f, const ExtMove& s) {
   52   return f.value < s.value;
   53 }
   54 
   55 template<GenType>
   56 ExtMove* generate(const Position& pos, ExtMove* moveList);
   57 
   58 /// The MoveList struct is a simple wrapper around generate(). It sometimes comes
   59 /// in handy to use this class instead of the low level generate() function.
   60 template<GenType T>
   61 struct MoveList {
   62 
   63   explicit MoveList(const Position& pos) : last(generate<T>(pos, moveList)) {}
   64   const ExtMove* begin() const { return moveList; }
   65   const ExtMove* end() const { return last; }
   66   size_t size() const { return last - moveList; }
   67   bool contains(Move move) const {
   68     return std::find(begin(), end(), move) != end();
   69   }
   70 
   71 private:
   72   ExtMove moveList[MAX_MOVES], *last;
   73 };
   74 
   75 #endif // #ifndef MOVEGEN_H_INCLUDED