LUA调用C++类

###C++对lua访问接口的封装,提供访问lua函数，向lua暴露普通C函数，向lua注册C++类型，对lua对象和表的封装等等. ####[向lua注册函数] static int showmsg(const char *msg) { printf("c-showmsg:%s\n",msg); return 0; } luacpp::reg_cfun(L,"cshow",showmsg); ####[调用lua函数] luacpp::call<void>(L,"test1"); ####[注册c++类型] --C++ code class test_class_A { public: test_class_A():memb_a(0) { printf("test_class_A void\n"); } test_class_A(const test_class_A &other):memb_a(other.memb_a) { printf("test_class_A con %d \n",memb_a); } ~test_class_A() { printf("~test_class_A\n"); } int memb_a; void show() { printf("test_class_A::show\n"); } }; luacpp::reg_cclass<test_class_A>::_reg(L,"test_class_A") .constructor<void>()//无参构造 .constructor<const test_class_A&>()//一个参数构造 .property("memb_a",&test_class_A::memb_a) .function("show",&test_class_A::show); --lua code function test12(obj) local t1 = test_class_A() t1.memb_a = 100 local t2 = test_class_A(t1) print(t2.memb_a) t2:show() end ####[获取lua全局变量] luatable lt = luacpp::Get<luatable>(L,"t_table"); ####[设置lua全局变量] luacpp::Set(L,"TEST_GLOBAL","this is test global"); ####[访问lua中的Object] --lua code Account = { balance = 10, names=0, [1] = 1, [2.2] = 2.2, } function Account:withdraw (v) self.balance = self.balance - v end function Account:new (o) o = o or {} setmetatable(o, self) self.__index = self return o end function Account:show() print("this is account show") end function Account:getBalance() return self.balance end function Account:setBalance(val) self.balance = val end function GetAccount() return Account:new() end --C++ code luaObject lo = luacpp::call<luaObject>(L,"GetAccount"); lo.call<void>("show"); printf("balance:%d\n",lo.Get<int>("balance")); lo.Set("balance",1000); printf("balance:%d\n",lo.Get<int>("balance")); printf("1:%d\n",lo.Get<int>(1)); printf("2:%f\n",lo.Get<double>(2.2)); ###[访问数组形式的lua表] ####[从lua返回] --lua code function get_lua_array() return {"a","b","c","d","e","f"} end --C++ code luatable lt = luacpp::call<luatable>(L,"get_lua_array"); for(int i = 0 ;i < (int)lt.size(); ++i) printf("%s\n",any_cast<std::string>(lt[i]).c_str()); ####[传递到lua] --C++ code luatable lt; lt.push_back(1); lt.push_back(2); lt.push_back(3); luacpp::call<void>(L,"pass_luatable",lt); --lua code function pass_luatable(lt) print(lt[1]) print(lt[2]) print(lt[3]) end