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simpler lua_Register

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Anonymous-275 2021-06-25 02:12:21 +03:00 committed by Lion Kortlepel
parent 518cb0664e
commit 1ff12cb2bf
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GPG Key ID: 4322FF2B4C71259B
1 changed files with 17 additions and 32 deletions
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49
src/TLuaFile.cpp
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@ -706,53 +706,38 @@ int lua_TempFix(lua_State* L) {
return 1;
}
template <const size_t _UniqueId, typename Res, typename... ArgTypes>
struct fun_ptr_helper {
public:
typedef std::function<Res(ArgTypes...)> function_type;
template <int ID>
struct CFunctionPointer {
std::function<int(lua_State*)> func;
static void bind(function_type&& f) { instance().fn_.swap(f); }
static void bind(const function_type& f) { instance().fn_ = f; }
static Res invoke(ArgTypes... args) { return instance().fn_(args...); }
typedef decltype(&fun_ptr_helper::invoke) pointer_type;
static pointer_type ptr() { return &invoke; }
private:
static fun_ptr_helper& instance() {
static fun_ptr_helper inst_;
return inst_;
static int callback(lua_State* s) {
return instance().func(s);
}
fun_ptr_helper() { }
function_type fn_;
static CFunctionPointer& instance() {
static CFunctionPointer inst_;
return inst_;
}
};
template <const size_t _UniqueId, typename _Res, typename... _ArgTypes>
typename fun_ptr_helper<_UniqueId, _Res, _ArgTypes...>::pointer_type
get_fn_ptr(const std::function<_Res(_ArgTypes...)>& f) {
fun_ptr_helper<_UniqueId, _Res, _ArgTypes...>::bind(f);
return fun_ptr_helper<_UniqueId, _Res, _ArgTypes...>::ptr();
}
int lua_Register(lua_State* L) {
if (lua_isstring(L, 1)) {
if(lua_isstring(L, 1)){
std::string Name(lua_tolstring(L, 1, nullptr));
lua_getglobal(L, Name.c_str());
if (lua_isfunction(L, -1)) {
for (auto& Script : Engine().LuaFiles()) {
if (Script->GetState() != L) {
lua_CFunction Func = get_fn_ptr<0>(std::function<int(lua_State*)>([=](lua_State* A) {
if(Script->GetState() != L){
CFunctionPointer<0> F; //How do we pass a value instead of a const
F.instance().func = [=](lua_State* A) {
lua_getglobal(L, Name.c_str());
if (lua_isfunction(L, -1)) {
lua_pcall(L, 0, 0, 0);
}
return 0;
}));
lua_register(Script->GetState(), Name.c_str(), Func);
};
lua_register(Script->GetState(), Name.c_str(), F.callback);
}
}