property_map.h

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// United States.
 
#ifndef HEDGEHOG_CX_PROPERTY_MAP_H_
#define HEDGEHOG_CX_PROPERTY_MAP_H_
 
#ifdef HH_ENABLE_HH_CX
 
#include <vector>
#include <string>
#include <algorithm>
#include <stdexcept>
 
namespace hh_cx {
 
template<class PropertyType>
class PropertyMap {
 private:
  static_assert(std::is_default_constructible_v<PropertyType>, "The property mapped should be default constructible.");
  std::vector<std::string>
      ids_{}; 
  std::vector<PropertyType>
      properties_{}; 
 
 public:
  constexpr PropertyMap() = default;
 
  constexpr void clear() {
    ids_.clear();
    properties_.clear();
  }
 
  constexpr void insert(std::string const &staticNodeName, PropertyType const &property) {
    if (std::find(ids_.cbegin(), ids_.cend(), staticNodeName) != ids_.cend()) {
      throw std::runtime_error("The node has already been inserted.");
    } else {
      ids_.push_back(staticNodeName);
      properties_.push_back(property);
    }
  }
 
  constexpr void insert_or_assign(std::string const &staticNodeName, PropertyType const &property) {
    auto posIt = std::find(ids_.cbegin(), ids_.cend(), staticNodeName);
    if (posIt != ids_.cend()) {
      properties_.at(std::distance(ids_.cbegin(), posIt)) = property;
    } else {
      ids_.push_back(staticNodeName);
      properties_.push_back(property);
    }
  }
 
  constexpr void erase(std::string const &staticNodeName) {
    auto posIt = std::find(ids_.cbegin(), ids_.cend(), staticNodeName);
    if (posIt != ids_.cend()) {
      for(auto pos = std::distance(ids_.cbegin(), posIt); pos < ids_.size() - 1; ++pos){
        ids_.at(pos) = ids_.at(pos + 1);
        properties_.at(pos) = properties_.at(pos + 1);
        ids_.pop_back();
        properties_.pop_back();
      }
    }
  }
 
  [[nodiscard]] constexpr bool contains(std::string const &staticNodeName){
    return std::find(ids_.cbegin(), ids_.cend(), staticNodeName) != ids_.cend();
  }
 
  [[nodiscard]] constexpr PropertyType & property(std::string const &staticNodeName){
    if(contains(staticNodeName)){
      return properties_.at(std::distance(ids_.cbegin(), std::find(ids_.cbegin(), ids_.cend(), staticNodeName)));
    }else{
      throw std::runtime_error("You are looking for hedgehog property associated to an unregistered node.");
    }
  }
 
 
};
}
#endif //HH_ENABLE_HH_CX
#endif //HEDGEHOG_CX_PROPERTY_MAP_H_