1 // The MIT License (MIT) 2 3 // Copyright (c) 2013-2016 Rapptz, ThePhD and contributors 4 5 // Permission is hereby granted, free of charge, to any person obtaining a copy of 6 // this software and associated documentation files (the "Software"), to deal in 7 // the Software without restriction, including without limitation the rights to 8 // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 9 // the Software, and to permit persons to whom the Software is furnished to do so, 10 // subject to the following conditions: 11 12 // The above copyright notice and this permission notice shall be included in all 13 // copies or substantial portions of the Software. 14 15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 17 // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 18 // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 19 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 20 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22 #ifndef SOL_STACK_POP_HPP 23 #define SOL_STACK_POP_HPP 24 25 #include "stack_core.hpp" 26 #include "stack_get.hpp" 27 #include <utility> 28 #include <tuple> 29 30 namespace sol { 31 namespace stack { 32 template <typename T, typename> 33 struct popper { popsol::stack::popper34 inline static decltype(auto) pop(lua_State* L) { 35 record tracking{}; 36 decltype(auto) r = get<T>(L, -lua_size<T>::value, tracking); 37 lua_pop(L, tracking.used); 38 return r; 39 } 40 }; 41 42 template <typename T> 43 struct popper<T, std::enable_if_t<std::is_base_of<stack_reference, meta::unqualified_t<T>>::value>> { 44 static_assert(meta::neg<std::is_base_of<stack_reference, meta::unqualified_t<T>>>::value, "You cannot pop something that derives from stack_reference: it will not remain on the stack and thusly will go out of scope!"); 45 }; 46 } // stack 47 } // sol 48 49 #endif // SOL_STACK_POP_HPP 50