layer.hh

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#pragma once

#include <string>
#include <map>
#include <vector>
#include <algorithm>

#include "Params.hh"

class OCTETSTRING; 
class BITSTRING;   
class CHARSTRING;  
class INTEGER;     

class layer {
  std::vector<layer*> upperLayers; 
  std::vector<layer*> lowerLayers; 

protected:
  std::string type; 

public: 

  explicit layer() : upperLayers(), lowerLayers(), type(std::string("")) { };

  explicit layer(const std::string& p_type) : upperLayers(), lowerLayers(), type(std::string(p_type.begin(), p_type.end())) { };

  virtual ~layer() {
    // Double linked list, only remove layers in lowerLayers from the lowest one
    std::for_each(lowerLayers.rbegin(), lowerLayers.rend(), [](layer* it) { delete it; } );
    lowerLayers.clear();
    upperLayers.clear();
  };

  void delete_layer() { };

public: 

  inline void add_upper_layer(layer* p_layer) {
    if (p_layer != NULL) {
      upperLayers.push_back(p_layer);
      p_layer->lowerLayers.push_back(this);
    };
  };

  void remove_upper_layer(layer* p_layer) {  };

  virtual void send_data(OCTETSTRING& p_data, Params& p_params) { };

  virtual void receive_data(OCTETSTRING& p_data, Params& p_params) { }

  inline const std::string& to_string() const { return type; };

protected: 
  inline void to_all_layers(std::vector<layer*>&layers, OCTETSTRING& data, Params& params) {
    for (std::vector<layer*>::const_iterator it = layers.cbegin(); it != layers.cend(); ++it) {
      layer* p = *it;
      p->receive_data(data, params); // FIXME BUG I 
    } // End of 'for' statement
  };

  inline void receive_to_all_layers(OCTETSTRING& data, Params& params) {
    for (std::vector<layer*>::const_iterator it = upperLayers.cbegin(); it != upperLayers.cend(); ++it) {
      layer* p = *it;
      p->receive_data(data, params);
    } // End of 'for' statement
  };

  inline void send_to_all_layers(OCTETSTRING& data, Params& params)  {
    for (std::vector<layer*>::const_iterator it = lowerLayers.cbegin(); it != lowerLayers.cend(); ++it) {
      layer* p = *it;
      p->send_data(data, params);
    } // End of 'for' statement
  };
}; // End of class layer