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+// The MIT License (MIT)
+
+// Copyright (c) 2013-2016 Rapptz, ThePhD and contributors
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef SOL_FUNCTION_RESULT_HPP
+#define SOL_FUNCTION_RESULT_HPP
+
+#include "reference.hpp"
+#include "tuple.hpp"
+#include "stack.hpp"
+#include "proxy_base.hpp"
+#include <cstdint>
+
+namespace sol {
+ struct function_result : public proxy_base<function_result> {
+ private:
+ lua_State* L;
+ int index;
+ int returncount;
+
+ public:
+ function_result() = default;
+ function_result(lua_State* L, int index = -1, int returncount = 0) : L(L), index(index), returncount(returncount) {
+
+ }
+ function_result(const function_result&) = default;
+ function_result& operator=(const function_result&) = default;
+ function_result(function_result&& o) : L(o.L), index(o.index), returncount(o.returncount) {
+ // Must be manual, otherwise destructor will screw us
+ // return count being 0 is enough to keep things clean
+ // but will be thorough
+ o.L = nullptr;
+ o.index = 0;
+ o.returncount = 0;
+ }
+ function_result& operator=(function_result&& o) {
+ L = o.L;
+ index = o.index;
+ returncount = o.returncount;
+ // Must be manual, otherwise destructor will screw us
+ // return count being 0 is enough to keep things clean
+ // but will be thorough
+ o.L = nullptr;
+ o.index = 0;
+ o.returncount = 0;
+ return *this;
+ }
+
+ template<typename T>
+ decltype(auto) get() const {
+ return stack::get<T>(L, index);
+ }
+
+ call_status status() const noexcept {
+ return call_status::ok;
+ }
+
+ bool valid() const noexcept {
+ return status() == call_status::ok || status() == call_status::yielded;
+ }
+
+ lua_State* lua_state() const { return L; };
+ int stack_index() const { return index; };
+
+ ~function_result() {
+ lua_pop(L, returncount);
+ }
+ };
+} // sol
+
+#endif // SOL_FUNCTION_RESULT_HPP