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"

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