attribute_tree.h

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//
// Created by henri on 10/11/21.
//
 
#ifndef STATE_MACHINE_CPP_ATTRIBUTE_TREE_H
#define STATE_MACHINE_CPP_ATTRIBUTE_TREE_H
 
#include <array>
#include <memory>
 
#include "abstract_attribute_tree.h"
#include "layer.h"
 
namespace state_machine_cpp {
    template<class ...T> class AttributeTree;
}
 
template<class HT, class ...QT>
class state_machine_cpp::AttributeTree<HT, QT...> : public AbstractAttributeTree {
 
    std::array<std::shared_ptr<AbstractLayer>, sizeof...(QT) + 1> m_layers;
 
    template<unsigned int N, class ...HX, class ...QX>
    void initialize(Layer<HX...>* t_head, QX* ...t_queue) {
        m_layers[N] = std::shared_ptr<Layer<HX...>>(t_head);
        if constexpr (sizeof...(QX) > 0) {
            initialize<N + 1>(t_queue...);
        }
    }
 
protected:
 
    AbstractLayer& layer(unsigned int t_i) override {
        return *m_layers[t_i].get();
    }
 
public:
    AttributeTree() : m_layers({std::make_shared<HT>(), std::make_shared<QT>()... }) {  }
 
    AttributeTree(HT* t_head, QT* ...t_queue) {
        initialize<0>(t_head, t_queue...);
    }
 
};
 
 
#endif //STATE_MACHINE_CPP_ATTRIBUTE_TREE_H