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
/// Endgame functions can be of two types depending on whether they return a
/// Value or a ScaleFactor.
-template<EndgameType E>
-using eg_fun = std::conditional<(E < SCALING_FUNCTIONS), Value, ScaleFactor>;
+template<EndgameType E> using
+eg_type = typename std::conditional<(E < SCALING_FUNCTIONS), Value, ScaleFactor>::type;
/// Base and derived templates for endgame evaluation and scaling functions
template<typename T>
struct EndgameBase {
- virtual ~EndgameBase() {}
+ virtual ~EndgameBase() = default;
virtual Color strong_side() const = 0;
virtual T operator()(const Position&) const = 0;
};
-template<EndgameType E, typename T = typename eg_fun<E>::type>
+template<EndgameType E, typename T = eg_type<E>>
struct Endgame : public EndgameBase<T> {
explicit Endgame(Color c) : strongSide(c), weakSide(~c) {}
T operator()(const Position&) const;
private:
- const Color strongSide, weakSide;
+ Color strongSide, weakSide;
};
class Endgames {
- template<typename T> using Map = std::map<Key, std::unique_ptr<T>>;
+ template<typename T> using Map = std::map<Key, std::unique_ptr<EndgameBase<T>>>;
- template<EndgameType E, typename T = EndgameBase<typename eg_fun<E>::type>>
+ template<EndgameType E, typename T = eg_type<E>>
void add(const std::string& code);
- template<typename T, int I = std::is_same<T, EndgameBase<ScaleFactor>>::value>
- Map<T>& map() { return std::get<I>(maps); }
+ template<typename T>
+ Map<T>& map() {
+ return std::get<std::is_same<T, ScaleFactor>::value>(maps);
+ }
- std::pair<Map<EndgameBase<Value>>, Map<EndgameBase<ScaleFactor>>> maps;
+ std::pair<Map<Value>, Map<ScaleFactor>> maps;
public:
Endgames();
- template<typename T, typename E = EndgameBase<T>> E* probe(Key key)
- { return map<E>().count(key) ? map<E>()[key].get() : nullptr; }
+ template<typename T>
+ EndgameBase<T>* probe(Key key) {
+ return map<T>().count(key) ? map<T>()[key].get() : nullptr;
+ }
};
#endif // #ifndef ENDGAME_H_INCLUDED