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Detect family type of endgame from its enum value

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-08-21 20:11:37 +01:00
parent 3b67636f0e
commit 6963c3802d
3 changed files with 54 additions and 49 deletions
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14
src/endgame.h
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@@ -46,6 +46,7 @@ enum EndgameType {
// Scaling functions
SCALE_FUNS,
KBPsK, // KB+pawns vs K
KQKRPs, // KQ vs KR+pawns
@@ -60,20 +61,25 @@ enum EndgameType {
};
/// Some magic to detect family type of endgame from its enum value
template<bool> struct bool_to_type { typedef Value type; };
template<> struct bool_to_type<true> { typedef ScaleFactor type; };
template<EndgameType E> struct eg_family : public bool_to_type<(E > SCALE_FUNS)> {};
/// Base and derived templates for endgame evaluation and scaling functions
template<typename T>
struct EndgameBase {
typedef EndgameBase<T> Base;
virtual ~EndgameBase() {}
virtual Color color() const = 0;
virtual T apply(const Position&) const = 0;
};
template<typename T, EndgameType>
template<EndgameType E, typename T = typename eg_family<E>::type>
struct Endgame : public EndgameBase<T> {
explicit Endgame(Color c) : strongerSide(c), weakerSide(opposite_color(c)) {}
@@ -99,7 +105,7 @@ struct Endgames {
template<typename T> EndgameBase<T>* get(Key key) const;
private:
template<typename T, EndgameType E> void add(const std::string& keyCode);
template<EndgameType E> void add(const std::string& keyCode);
// Here we store two maps, for evaluate and scaling functions...
std::pair<EMap<Value>::type, EMap<ScaleFactor>::type> maps;