lua_custom_function.h

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#ifndef LUA_CUSTOM_FUNCTION_H
#define LUA_CUSTOM_FUNCTION_H
 
#include "custom_function.h"
#include "sol.hpp"
 
#include <mutex>
 
class LuaCustomFunction : public CustomFunction
{
public:
  LuaCustomFunction(SnippetData snippet = {});
 
  void initEngine() override;
 
  void calculatePoints(const std::vector<const PlotData*>& channels_data,
                       size_t point_index, std::vector<PlotData::Point>& points) override;
 
  QString language() const override
  {
    return "LUA";
  }
 
  const char* name() const override
  {
    return "LuaCustomFunction";
  }
 
  bool xmlLoadState(const QDomElement& parent_element) override;
 
  std::string getError(sol::error err);
 
private:
  sol::state _lua_engine;
  sol::protected_function _lua_function;
  std::vector<double> _chan_values;
  std::mutex mutex_;
  int global_lines_ = 0;
  int function_lines_ = 0;
};
 
#endif  // LUA_CUSTOM_FUNCTION_H