-/// The MaterialInfoTable class represents a pawn hash table. The most important
-/// method is get_material_info, which returns a pointer to a MaterialInfo object.
-class EndgameFunctions;
-
-class MaterialInfoTable : public SimpleHash<MaterialInfo, MaterialTableSize> {
-public:
- MaterialInfoTable();
- ~MaterialInfoTable();
- MaterialInfo* get_material_info(const Position& pos) const;
- static Phase game_phase(const Position& pos);
-
-private:
- template<Color Us>
- static int imbalance(const int pieceCount[][8]);
-
- EndgameFunctions* funcs;
-};
-
-
-/// MaterialInfo::scale_factor takes a position and a color as input, and
-/// returns a scale factor for the given color. We have to provide the
-/// position in addition to the color, because the scale factor need not
-/// to be a constant: It can also be a function which should be applied to
-/// the position. For instance, in KBP vs K endgames, a scaling function
-/// which checks for draws with rook pawns and wrong-colored bishops.
-
-inline ScaleFactor MaterialInfo::scale_factor(const Position& pos, Color c) const {
-
- if (!scalingFunction[c])
- return ScaleFactor(factor[c]);
-
- ScaleFactor sf = scalingFunction[c]->apply(pos);
- return sf == SCALE_FACTOR_NONE ? ScaleFactor(factor[c]) : sf;
-}
-
-inline Score MaterialInfo::material_value() const {
- return make_score(value, value);
-}
-
-inline int MaterialInfo::space_weight() const {
- return spaceWeight;
-}
-
-inline Phase MaterialInfo::game_phase() const {
- return gamePhase;
-}
-
-inline bool MaterialInfo::specialized_eval_exists() const {
- return evaluationFunction != NULL;
-}