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86 lines
3 KiB
C++
86 lines
3 KiB
C++
// sol2
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// The MIT License (MIT)
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// Copyright (c) 2013-2021 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_BASE_HPP
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#define SOL_OBJECT_BASE_HPP
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#include <sol/reference.hpp>
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#include <sol/stack.hpp>
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namespace sol {
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template <typename ref_t>
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class basic_object_base : public ref_t {
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private:
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using base_t = ref_t;
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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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int r = base_t::registry_index();
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if (r == LUA_REFNIL)
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return meta::any_same<meta::unqualified_t<T>, lua_nil_t, nullopt_t, std::nullptr_t>::value ? true : false;
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if (r == LUA_NOREF)
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return false;
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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_base() noexcept = default;
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basic_object_base(const basic_object_base&) = default;
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basic_object_base(basic_object_base&&) = default;
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basic_object_base& operator=(const basic_object_base&) = default;
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basic_object_base& operator=(basic_object_base&&) = default;
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template <typename T, typename... Args, meta::enable<meta::neg<std::is_same<meta::unqualified_t<T>, basic_object_base>>> = meta::enabler>
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basic_object_base(T&& arg, Args&&... args) : base_t(std::forward<T>(arg), std::forward<Args>(args)...) {
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}
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template <typename T>
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decltype(auto) as() const {
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return as_stack<T>(is_stack_based<base_t>());
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}
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template <typename T>
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bool is() const {
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return is_stack<T>(is_stack_based<base_t>());
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}
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};
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} // namespace sol
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#endif // SOL_OBJECT_BASE_HPP
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