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https://github.com/ThePhD/sol2.git
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116 lines
3.9 KiB
C++
116 lines
3.9 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013-2016 Rapptz, ThePhD and contributors
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_OBJECT_HPP
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#define SOL_OBJECT_HPP
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#include "reference.hpp"
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#include "userdata.hpp"
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#include "stack.hpp"
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#include "variadic_args.hpp"
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namespace sol {
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template <typename base_t>
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class basic_object : public base_t {
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private:
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template<typename T>
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decltype(auto) as_stack(std::true_type) const {
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return stack::get<T>(base_t::lua_state(), base_t::stack_index());
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}
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template<typename T>
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decltype(auto) as_stack(std::false_type) const {
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base_t::push();
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return stack::pop<T>(base_t::lua_state());
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}
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template<typename T>
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bool is_stack(std::true_type) const {
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return stack::check<T>(base_t::lua_state(), base_t::stack_index(), no_panic);
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}
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template<typename T>
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bool is_stack(std::false_type) const {
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auto pp = stack::push_pop(*this);
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return stack::check<T>(base_t::lua_state(), -1, no_panic);
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}
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public:
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basic_object() noexcept = default;
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template <typename T, meta::enable<meta::neg<std::is_same<meta::unqualified_t<T>, basic_object>>, std::is_base_of<base_t, meta::unqualified_t<T>>> = meta::enabler>
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basic_object(T&& r) : base_t(std::forward<T>(r)) {}
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basic_object(nil_t r) : base_t(r) {}
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basic_object(const basic_object&) = default;
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basic_object(basic_object&&) = default;
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basic_object& operator=(const basic_object&) = default;
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basic_object& operator=(basic_object&&) = default;
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basic_object(const stack_reference& r) noexcept : basic_object(r.lua_state(), r.stack_index()) {}
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basic_object(stack_reference&& r) noexcept : basic_object(r.lua_state(), r.stack_index()) {}
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basic_object(lua_State* L, int index = -1) noexcept : base_t(L, index) {}
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template<typename T>
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decltype(auto) as() const {
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return as_stack<T>(std::is_same<base_t, stack_reference>());
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}
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template<typename T>
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bool is() const {
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if (!base_t::valid())
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return false;
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return is_stack<T>(std::is_same<base_t, stack_reference>());
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}
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};
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template <typename T>
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object make_object(lua_State* L, T&& value) {
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int backpedal = stack::push(L, std::forward<T>(value));
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object r = stack::get<object>(L, -backpedal);
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lua_pop(L, backpedal);
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return r;
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}
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template <typename T, typename... Args>
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object make_object(lua_State* L, Args&&... args) {
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int backpedal = stack::push<T>(L, std::forward<Args>(args)...);
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object r = stack::get<sol::object>(L, -backpedal);
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lua_pop(L, backpedal);
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return r;
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}
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inline bool operator==(const object& lhs, const nil_t&) {
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return !lhs.valid();
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}
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inline bool operator==(const nil_t&, const object& rhs) {
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return !rhs.valid();
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}
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inline bool operator!=(const object& lhs, const nil_t&) {
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return lhs.valid();
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}
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inline bool operator!=(const nil_t&, const object& rhs) {
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return rhs.valid();
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}
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} // sol
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#endif // SOL_OBJECT_HPP
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