1 // sol3 2 3 // The MIT License (MIT) 4 5 // Copyright (c) 2013-2021 Rapptz, ThePhD and contributors 6 7 // Permission is hereby granted, free of charge, to any person obtaining a copy of 8 // this software and associated documentation files (the "Software"), to deal in 9 // the Software without restriction, including without limitation the rights to 10 // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 11 // the Software, and to permit persons to whom the Software is furnished to do so, 12 // subject to the following conditions: 13 14 // The above copyright notice and this permission notice shall be included in all 15 // copies or substantial portions of the Software. 16 17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 19 // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 20 // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 21 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 24 #ifndef SOL_STACK_POP_HPP 25 #define SOL_STACK_POP_HPP 26 27 #include <sol/stack_core.hpp> 28 #include <sol/stack_get.hpp> 29 #include <utility> 30 #include <tuple> 31 32 namespace sol { namespace stack { 33 template <typename T, typename> 34 struct popper { popsol::stack::popper35 inline static decltype(auto) pop(lua_State* L) { 36 if constexpr (is_stack_based_v<meta::unqualified_t<T>>) { 37 static_assert(!is_stack_based_v<meta::unqualified_t<T>>, 38 "You cannot pop something that lives solely on the stack: it will not remain on the stack when popped and thusly will go out of " 39 "scope!"); 40 } 41 else { 42 record tracking {}; 43 decltype(auto) r = get<T>(L, -lua_size<T>::value, tracking); 44 lua_pop(L, tracking.used); 45 return r; 46 } 47 } 48 }; 49 }} // namespace sol::stack 50 51 #endif // SOL_STACK_POP_HPP 52