#pragma once

#include "gc-data.h"
#include "utils.h"
#include "lua-helpers.h"
#include "gc-object.h"

namespace effil {

class FunctionData : public GCData {
public:
    std::string function;
#if LUA_VERSION_NUM > 501
    unsigned char envUpvaluePos;
#endif // LUA_VERSION_NUM > 501
    std::vector<StoredObject> upvalues;
};

class Function : public GCObject<FunctionData> {
public:
    sol::object loadFunction(lua_State* state) const;
    sol::object convertToLua(lua_State* state, BaseHolder::DumpCache& cache) const;

private:
    using Converter = std::function<sol::object(const StoredObject&)>;
    sol::object convert(lua_State* state, const Converter& clbk) const;
    void construct(const sol::function& luaObject, SolTableToShared& visited);

    explicit Function(const sol::function& luaObject, SolTableToShared& visited);
    explicit Function(const sol::function& luaObject);
    friend class GC;
};

} // namespace effil