has_color.hpp

 
#ifndef UFO_MAP_COLOR_PREDICATE_HAS_COLOR_HPP
#define UFO_MAP_COLOR_PREDICATE_HAS_COLOR_HPP
 
// UFO
#include <ufo/map/color/color.hpp>
#include <ufo/map/predicate/predicate.hpp>
#include <ufo/map/types.hpp>
 
namespace ufo::pred
{
template <bool Negated = false>
struct HasColor {
};
 
template <bool Negated>
HasColor<!Negated> operator!(HasColor<Negated>)
{
    return {};
}
 
template <bool Negated>
struct InnerCheck<HasColor<Negated>> {
    using Pred = HasColor<Negated>;
 
    template <class Map, class Node>
    static constexpr bool apply(Pred p, Map const& m, Node const& n)
    {
        if constexpr (Negated) {
            return true;
        } else {
            return ColorBlendingMode::NONE == m.colorPropagationBlendingMode() ||
                   !m.colorEmpty(n.index());
        }
    }
};
 
template <bool Negated>
struct ValueCheck<HasColor<Negated>> {
    using Pred = HasColor<Negated>;
 
    template <class Map, class Node>
    static constexpr bool apply(Pred, Map const& m, Node n)
    {
        if constexpr (Negated) {
            return m.colorEmpty(n.index());
        } else {
            return !m.colorEmpty(n.index());
        }
    }
};
}  // namespace ufo::pred
 
#endif  // UFO_MAP_COLOR_PREDICATE_HAS_COLOR_HPP