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901 lines
25 KiB
C++
901 lines
25 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_REFERENCE_HPP
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#define SOL_REFERENCE_HPP
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#include <sol/types.hpp>
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#include <sol/stack_reference.hpp>
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#include <functional>
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namespace sol {
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namespace detail {
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inline const char (&default_main_thread_name())[9] {
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static const char name[9] = "sol.\xF0\x9F\x93\x8C";
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return name;
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}
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} // namespace detail
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namespace stack {
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inline void remove(lua_State* L_, int rawindex, int count) {
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if (count < 1)
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return;
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int top = lua_gettop(L_);
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if (top < 1) {
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return;
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}
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if (rawindex == -count || top == rawindex) {
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// Slice them right off the top
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lua_pop(L_, static_cast<int>(count));
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return;
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}
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// Remove each item one at a time using stack operations
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// Probably slower, maybe, haven't benchmarked,
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// but necessary
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int index = lua_absindex(L_, rawindex);
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if (index < 0) {
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index = lua_gettop(L_) + (index + 1);
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}
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int last = index + count;
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for (int i = index; i < last; ++i) {
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lua_remove(L_, index);
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}
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}
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struct push_popper_at {
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lua_State* L;
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int index;
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int count;
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push_popper_at(lua_State* L_, int index_ = -1, int count_ = 1) : L(L_), index(index_), count(count_) {
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}
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~push_popper_at() {
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remove(L, index, count);
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}
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};
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template <bool top_level>
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struct push_popper_n {
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lua_State* L;
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int pop_count;
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push_popper_n(lua_State* L_, int pop_count_) : L(L_), pop_count(pop_count_) {
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}
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push_popper_n(const push_popper_n&) = delete;
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push_popper_n(push_popper_n&&) = default;
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push_popper_n& operator=(const push_popper_n&) = delete;
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push_popper_n& operator=(push_popper_n&&) = default;
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~push_popper_n() {
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lua_pop(L, pop_count);
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}
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};
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template <>
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struct push_popper_n<true> {
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push_popper_n(lua_State*, int) {
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}
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};
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template <bool, typename T, typename = void>
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struct push_popper {
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using Tu = meta::unqualified_t<T>;
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T m_object;
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int m_index;
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push_popper(T object_) noexcept : m_object(object_), m_index(lua_absindex(m_object.lua_state(), -m_object.push())) {
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}
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int index_of(const Tu&) const noexcept {
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return m_index;
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}
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~push_popper() {
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m_object.pop();
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}
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};
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template <typename T, typename C>
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struct push_popper<true, T, C> {
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using Tu = meta::unqualified_t<T>;
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push_popper(T) noexcept {
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}
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int index_of(const Tu&) const noexcept {
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return -1;
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}
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~push_popper() {
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}
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};
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template <typename T>
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struct push_popper<false, T, std::enable_if_t<is_stack_based_v<meta::unqualified_t<T>>>> {
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using Tu = meta::unqualified_t<T>;
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push_popper(T) noexcept {
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}
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int index_of(const Tu& object_) const noexcept {
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return object_.stack_index();
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}
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~push_popper() {
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}
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};
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template <bool, typename T, typename = void>
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struct stateless_push_popper {
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using Tu = meta::unqualified_t<T>;
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lua_State* m_L;
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T m_object;
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int m_index;
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stateless_push_popper(lua_State* L_, T object_) noexcept : m_L(L_), m_object(object_), m_index(lua_absindex(m_L, -m_object.push(m_L))) {
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}
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int index_of(const Tu&) const noexcept {
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return m_index;
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}
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~stateless_push_popper() {
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m_object.pop(m_L);
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}
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};
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template <typename T, typename C>
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struct stateless_push_popper<true, T, C> {
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using Tu = meta::unqualified_t<T>;
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stateless_push_popper(lua_State*, T) noexcept {
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}
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int index_of(lua_State*, const Tu&) const noexcept {
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return -1;
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}
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~stateless_push_popper() {
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}
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};
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template <typename T>
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struct stateless_push_popper<false, T, std::enable_if_t<is_stack_based_v<meta::unqualified_t<T>>>> {
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using Tu = meta::unqualified_t<T>;
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lua_State* m_L;
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stateless_push_popper(lua_State* L_, T) noexcept : m_L(L_) {
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}
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int index_of(const Tu& object_) const noexcept {
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return object_.stack_index();
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}
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~stateless_push_popper() {
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}
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};
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template <bool top_level = false, typename T>
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push_popper<top_level, T> push_pop(T&& x) {
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return push_popper<top_level, T>(std::forward<T>(x));
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}
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template <bool top_level = false, typename T>
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stateless_push_popper<top_level, T> push_pop(lua_State* L_, T&& object_) {
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return stateless_push_popper<top_level, T>(L_, std::forward<T>(object_));
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}
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template <typename T>
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push_popper_at push_pop_at(T&& object_) {
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int push_count = object_.push();
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lua_State* L = object_.lua_state();
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return push_popper_at(L, lua_absindex(L, -push_count), push_count);
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}
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template <bool top_level = false>
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push_popper_n<top_level> pop_n(lua_State* L_, int pop_count_) {
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return push_popper_n<top_level>(L_, pop_count_);
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}
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} // namespace stack
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inline lua_State* main_thread(lua_State* L_, lua_State* backup_if_unsupported_ = nullptr) {
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#if SOL_LUA_VERSION_I_ < 502
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if (L_ == nullptr)
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return backup_if_unsupported_;
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lua_getglobal(L_, detail::default_main_thread_name());
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auto pp = stack::pop_n(L_, 1);
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if (type_of(L_, -1) == type::thread) {
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return lua_tothread(L_, -1);
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}
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return backup_if_unsupported_;
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#else
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if (L_ == nullptr)
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return backup_if_unsupported_;
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lua_rawgeti(L_, LUA_REGISTRYINDEX, LUA_RIDX_MAINTHREAD);
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lua_State* Lmain = lua_tothread(L_, -1);
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lua_pop(L_, 1);
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return Lmain;
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#endif // Lua 5.2+ has the main thread unqualified_getter
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}
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namespace detail {
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struct no_safety_tag {
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} inline constexpr no_safety {};
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template <bool b>
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inline lua_State* pick_main_thread(lua_State* L_, lua_State* backup_if_unsupported = nullptr) {
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(void)L_;
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(void)backup_if_unsupported;
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if (b) {
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return main_thread(L_, backup_if_unsupported);
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}
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return L_;
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}
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} // namespace detail
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class stateless_reference {
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private:
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template <bool o_main_only>
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friend class basic_reference;
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int ref = LUA_NOREF;
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int copy_ref(lua_State* L_) const noexcept {
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if (ref == LUA_NOREF)
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return LUA_NOREF;
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push(L_);
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return luaL_ref(L_, LUA_REGISTRYINDEX);
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}
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lua_State* copy_assign_ref(lua_State* L_, lua_State* rL, const stateless_reference& r) {
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if (valid(L_)) {
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deref(L_);
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}
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ref = r.copy_ref(L_);
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return rL;
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}
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lua_State* move_assign(lua_State* L_, lua_State* rL, stateless_reference&& r) {
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if (valid(L_)) {
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deref(L_);
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}
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ref = r.ref;
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r.ref = LUA_NOREF;
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return rL;
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}
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protected:
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int stack_index() const noexcept {
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return -1;
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}
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stateless_reference(lua_State* L_, global_tag_t) noexcept {
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#if SOL_IS_ON(SOL_SAFE_STACK_CHECK_I_)
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luaL_checkstack(L_, 1, "not enough Lua stack space to push this reference value");
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#endif // make sure stack doesn't overflow
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lua_pushglobaltable(L_);
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ref = luaL_ref(L_, LUA_REGISTRYINDEX);
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}
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stateless_reference(int raw_ref_index) noexcept : ref(raw_ref_index) {
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}
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public:
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stateless_reference() noexcept = default;
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stateless_reference(lua_nil_t) noexcept : stateless_reference() {
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}
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stateless_reference(const stack_reference& r) noexcept : stateless_reference(r.lua_state(), r.stack_index()) {
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}
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stateless_reference(stack_reference&& r) noexcept : stateless_reference(r.lua_state(), r.stack_index()) {
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}
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stateless_reference(lua_State* L_, const stateless_reference& r) noexcept {
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if (r.ref == LUA_REFNIL) {
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ref = LUA_REFNIL;
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return;
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}
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if (r.ref == LUA_NOREF || L_ == nullptr) {
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ref = LUA_NOREF;
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return;
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}
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ref = r.copy_ref(L_);
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}
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stateless_reference(lua_State* L_, stateless_reference&& r) noexcept {
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if (r.ref == LUA_REFNIL) {
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ref = LUA_REFNIL;
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return;
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}
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if (r.ref == LUA_NOREF || L_ == nullptr) {
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ref = LUA_NOREF;
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return;
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}
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ref = r.ref;
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r.ref = LUA_NOREF;
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}
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stateless_reference(lua_State* L_, const stack_reference& r) noexcept {
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if (L_ == nullptr || r.lua_state() == nullptr || r.get_type() == type::none) {
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ref = LUA_NOREF;
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return;
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}
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if (r.get_type() == type::lua_nil) {
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ref = LUA_REFNIL;
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return;
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}
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if (L_ != r.lua_state() && !detail::xmovable(L_, r.lua_state())) {
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return;
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}
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r.push(L_);
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ref = luaL_ref(L_, LUA_REGISTRYINDEX);
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}
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stateless_reference(lua_State* L_, const stateless_stack_reference& r) noexcept : stateless_reference(L_, r.stack_index()) {
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}
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stateless_reference(lua_State* L_, int index = -1) noexcept {
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#if SOL_IS_ON(SOL_SAFE_STACK_CHECK_I_)
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luaL_checkstack(L_, 1, "not enough Lua stack space to push this reference value");
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#endif // make sure stack doesn't overflow
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lua_pushvalue(L_, index);
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ref = luaL_ref(L_, LUA_REGISTRYINDEX);
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}
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stateless_reference(lua_State* L_, absolute_index index_) noexcept : stateless_reference(L_, index_.index) {
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}
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stateless_reference(lua_State* L_, ref_index index_) noexcept {
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lua_rawgeti(L_, LUA_REGISTRYINDEX, index_.index);
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ref = luaL_ref(L_, LUA_REGISTRYINDEX);
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}
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stateless_reference(lua_State*, lua_nil_t) noexcept {
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}
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~stateless_reference() noexcept = default;
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stateless_reference(const stateless_reference& o) noexcept = delete;
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stateless_reference& operator=(const stateless_reference& r) noexcept = delete;
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stateless_reference(stateless_reference&& o) noexcept : ref(o.ref) {
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o.ref = LUA_NOREF;
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}
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stateless_reference& operator=(stateless_reference&& o) noexcept {
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ref = o.ref;
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o.ref = LUA_NOREF;
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return *this;
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}
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int push(lua_State* L_) const noexcept {
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#if SOL_IS_ON(SOL_SAFE_STACK_CHECK_I_)
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luaL_checkstack(L_, 1, "not enough Lua stack space to push this reference value");
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#endif // make sure stack doesn't overflow
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lua_rawgeti(L_, LUA_REGISTRYINDEX, ref);
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return 1;
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}
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void pop(lua_State* L_, int n = 1) const noexcept {
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lua_pop(L_, n);
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}
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int registry_index() const noexcept {
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return ref;
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}
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void reset(lua_State* L_) noexcept {
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if (valid(L_)) {
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deref(L_);
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}
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ref = LUA_NOREF;
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}
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void reset(lua_State* L_, int index_) noexcept {
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reset(L_);
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#if SOL_IS_ON(SOL_SAFE_STACK_CHECK_I_)
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luaL_checkstack(L_, 1, "not enough Lua stack space to push this reference value");
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#endif // make sure stack doesn't overflow
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lua_pushvalue(L_, index_);
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ref = luaL_ref(L_, LUA_REGISTRYINDEX);
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}
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bool valid(lua_State*) const noexcept {
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return !(ref == LUA_NOREF || ref == LUA_REFNIL);
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}
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const void* pointer(lua_State* L_) const noexcept {
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int si = push(L_);
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const void* vp = lua_topointer(L_, -si);
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lua_pop(L_, si);
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return vp;
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}
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type get_type(lua_State* L_) const noexcept {
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int p = push(L_);
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int result = lua_type(L_, -1);
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pop(L_, p);
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return static_cast<type>(result);
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}
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void abandon(lua_State* = nullptr) {
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ref = LUA_NOREF;
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}
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void deref(lua_State* L_) const noexcept {
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luaL_unref(L_, LUA_REGISTRYINDEX, ref);
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}
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stateless_reference copy(lua_State* L_) const noexcept {
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if (!valid(L_)) {
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return {};
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}
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return stateless_reference(copy_ref(L_));
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}
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void copy_assign(lua_State* L_, const stateless_reference& right) noexcept {
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if (valid(L_)) {
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deref(L_);
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}
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if (!right.valid(L_)) {
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return;
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}
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ref = right.copy_ref(L_);
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}
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bool equals(lua_State* L_, const stateless_reference& r) const noexcept {
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auto ppl = stack::push_pop(L_, *this);
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auto ppr = stack::push_pop(L_, r);
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return lua_compare(L_, -1, -2, LUA_OPEQ) == 1;
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}
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bool equals(lua_State* L_, const stateless_stack_reference& r) const noexcept {
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auto ppl = stack::push_pop(L_, *this);
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return lua_compare(L_, -1, r.stack_index(), LUA_OPEQ) == 1;
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}
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bool equals(lua_State* L_, lua_nil_t) const noexcept {
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return valid(L_);
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}
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};
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template <bool main_only = false>
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class basic_reference : public stateless_reference {
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private:
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template <bool o_main_only>
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friend class basic_reference;
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lua_State* luastate = nullptr; // non-owning
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template <bool r_main_only>
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void copy_assign_complex(const basic_reference<r_main_only>& r) {
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if (valid()) {
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deref();
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}
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if (r.ref == LUA_REFNIL) {
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luastate = detail::pick_main_thread < main_only && !r_main_only > (r.lua_state(), r.lua_state());
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ref = LUA_REFNIL;
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return;
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}
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if (r.ref == LUA_NOREF) {
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luastate = r.luastate;
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ref = LUA_NOREF;
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return;
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}
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if (detail::xmovable(lua_state(), r.lua_state())) {
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r.push(lua_state());
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ref = luaL_ref(lua_state(), LUA_REGISTRYINDEX);
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return;
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}
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luastate = detail::pick_main_thread < main_only && !r_main_only > (r.lua_state(), r.lua_state());
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ref = r.copy_ref();
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}
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template <bool r_main_only>
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void move_assign(basic_reference<r_main_only>&& r) {
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if (valid()) {
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deref();
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}
|
|
if (r.ref == LUA_REFNIL) {
|
|
luastate = detail::pick_main_thread < main_only && !r_main_only > (r.lua_state(), r.lua_state());
|
|
ref = LUA_REFNIL;
|
|
return;
|
|
}
|
|
if (r.ref == LUA_NOREF) {
|
|
luastate = r.luastate;
|
|
ref = LUA_NOREF;
|
|
return;
|
|
}
|
|
if (detail::xmovable(lua_state(), r.lua_state())) {
|
|
r.push(lua_state());
|
|
ref = luaL_ref(lua_state(), LUA_REGISTRYINDEX);
|
|
return;
|
|
}
|
|
|
|
luastate = detail::pick_main_thread < main_only && !r_main_only > (r.lua_state(), r.lua_state());
|
|
ref = r.ref;
|
|
r.ref = LUA_NOREF;
|
|
r.luastate = nullptr;
|
|
}
|
|
|
|
protected:
|
|
basic_reference(lua_State* L_, global_tag_t) noexcept : basic_reference(detail::pick_main_thread<main_only>(L_, L_), global_tag, global_tag) {
|
|
}
|
|
|
|
basic_reference(lua_State* L_, global_tag_t, global_tag_t) noexcept : stateless_reference(L_, global_tag), luastate(L_) {
|
|
}
|
|
|
|
basic_reference(lua_State* oL, const basic_reference<!main_only>& o) noexcept : stateless_reference(oL, o), luastate(oL) {
|
|
}
|
|
|
|
void deref() const noexcept {
|
|
return stateless_reference::deref(lua_state());
|
|
}
|
|
|
|
int copy_ref() const noexcept {
|
|
return copy_ref(lua_state());
|
|
}
|
|
|
|
int copy_ref(lua_State* L_) const noexcept {
|
|
return stateless_reference::copy_ref(L_);
|
|
}
|
|
|
|
public:
|
|
basic_reference() noexcept = default;
|
|
basic_reference(lua_nil_t) noexcept : basic_reference() {
|
|
}
|
|
basic_reference(const stack_reference& r) noexcept : basic_reference(r.lua_state(), r.stack_index()) {
|
|
}
|
|
basic_reference(stack_reference&& r) noexcept : basic_reference(r.lua_state(), r.stack_index()) {
|
|
}
|
|
template <bool r_main_only>
|
|
basic_reference(lua_State* L_, const basic_reference<r_main_only>& r) noexcept : luastate(detail::pick_main_thread<main_only>(L_, L_)) {
|
|
if (r.ref == LUA_REFNIL) {
|
|
ref = LUA_REFNIL;
|
|
return;
|
|
}
|
|
if (r.ref == LUA_NOREF || lua_state() == nullptr) {
|
|
ref = LUA_NOREF;
|
|
return;
|
|
}
|
|
if (detail::xmovable(lua_state(), r.lua_state())) {
|
|
r.push(lua_state());
|
|
ref = luaL_ref(lua_state(), LUA_REGISTRYINDEX);
|
|
return;
|
|
}
|
|
ref = r.copy_ref();
|
|
}
|
|
|
|
template <bool r_main_only>
|
|
basic_reference(lua_State* L_, basic_reference<r_main_only>&& r) noexcept : luastate(detail::pick_main_thread<main_only>(L_, L_)) {
|
|
if (r.ref == LUA_REFNIL) {
|
|
ref = LUA_REFNIL;
|
|
return;
|
|
}
|
|
if (r.ref == LUA_NOREF || lua_state() == nullptr) {
|
|
ref = LUA_NOREF;
|
|
return;
|
|
}
|
|
if (detail::xmovable(lua_state(), r.lua_state())) {
|
|
r.push(lua_state());
|
|
ref = luaL_ref(lua_state(), LUA_REGISTRYINDEX);
|
|
return;
|
|
}
|
|
ref = r.ref;
|
|
r.ref = LUA_NOREF;
|
|
r.luastate = nullptr;
|
|
}
|
|
|
|
basic_reference(lua_State* L_, const stack_reference& r) noexcept : luastate(detail::pick_main_thread<main_only>(L_, L_)) {
|
|
if (lua_state() == nullptr || r.lua_state() == nullptr || r.get_type() == type::none) {
|
|
ref = LUA_NOREF;
|
|
return;
|
|
}
|
|
if (r.get_type() == type::lua_nil) {
|
|
ref = LUA_REFNIL;
|
|
return;
|
|
}
|
|
if (lua_state() != r.lua_state() && !detail::xmovable(lua_state(), r.lua_state())) {
|
|
return;
|
|
}
|
|
r.push(lua_state());
|
|
ref = luaL_ref(lua_state(), LUA_REGISTRYINDEX);
|
|
}
|
|
basic_reference(lua_State* L_, int index = -1) noexcept : luastate(detail::pick_main_thread<main_only>(L_, L_)) {
|
|
// use L_ to stick with that state's execution stack
|
|
#if SOL_IS_ON(SOL_SAFE_STACK_CHECK_I_)
|
|
luaL_checkstack(L_, 1, "not enough Lua stack space to push this reference value");
|
|
#endif // make sure stack doesn't overflow
|
|
lua_pushvalue(L_, index);
|
|
ref = luaL_ref(L_, LUA_REGISTRYINDEX);
|
|
}
|
|
basic_reference(lua_State* L_, ref_index index) noexcept : luastate(detail::pick_main_thread<main_only>(L_, L_)) {
|
|
lua_rawgeti(lua_state(), LUA_REGISTRYINDEX, index.index);
|
|
ref = luaL_ref(lua_state(), LUA_REGISTRYINDEX);
|
|
}
|
|
basic_reference(lua_State* L_, lua_nil_t) noexcept : luastate(detail::pick_main_thread<main_only>(L_, L_)) {
|
|
}
|
|
|
|
~basic_reference() noexcept {
|
|
if (lua_state() == nullptr || ref == LUA_NOREF)
|
|
return;
|
|
deref();
|
|
}
|
|
|
|
basic_reference(const basic_reference& o) noexcept : stateless_reference(o.copy_ref()), luastate(o.lua_state()) {
|
|
}
|
|
|
|
basic_reference(basic_reference&& o) noexcept : stateless_reference(std::move(o)), luastate(o.lua_state()) {
|
|
o.luastate = nullptr;
|
|
}
|
|
|
|
basic_reference(const basic_reference<!main_only>& o) noexcept
|
|
: basic_reference(detail::pick_main_thread<main_only>(o.lua_state(), o.lua_state()), o) {
|
|
}
|
|
|
|
basic_reference(basic_reference<!main_only>&& o) noexcept
|
|
: stateless_reference(std::move(o)), luastate(detail::pick_main_thread<main_only>(o.lua_state(), o.lua_state())) {
|
|
o.luastate = nullptr;
|
|
o.ref = LUA_NOREF;
|
|
}
|
|
|
|
basic_reference& operator=(basic_reference&& r) noexcept {
|
|
move_assign(std::move(r));
|
|
return *this;
|
|
}
|
|
|
|
basic_reference& operator=(const basic_reference& r) noexcept {
|
|
copy_assign_complex(r);
|
|
return *this;
|
|
}
|
|
|
|
basic_reference& operator=(basic_reference<!main_only>&& r) noexcept {
|
|
move_assign(std::move(r));
|
|
return *this;
|
|
}
|
|
|
|
basic_reference& operator=(const basic_reference<!main_only>& r) noexcept {
|
|
copy_assign_complex(r);
|
|
return *this;
|
|
}
|
|
|
|
basic_reference& operator=(const lua_nil_t&) noexcept {
|
|
reset();
|
|
return *this;
|
|
}
|
|
|
|
template <typename Super>
|
|
basic_reference& operator=(proxy_base<Super>&& r);
|
|
|
|
template <typename Super>
|
|
basic_reference& operator=(const proxy_base<Super>& r);
|
|
|
|
int push() const noexcept {
|
|
return push(lua_state());
|
|
}
|
|
|
|
void reset() noexcept {
|
|
stateless_reference::reset(luastate);
|
|
luastate = nullptr;
|
|
}
|
|
|
|
int push(lua_State* L_) const noexcept {
|
|
#if SOL_IS_ON(SOL_SAFE_STACK_CHECK_I_)
|
|
luaL_checkstack(L_, 1, "not enough Lua stack space to push this reference value");
|
|
#endif // make sure stack doesn't overflow
|
|
if (lua_state() == nullptr) {
|
|
lua_pushnil(L_);
|
|
return 1;
|
|
}
|
|
lua_rawgeti(lua_state(), LUA_REGISTRYINDEX, ref);
|
|
if (L_ != lua_state()) {
|
|
lua_xmove(lua_state(), L_, 1);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void pop() const noexcept {
|
|
pop(lua_state());
|
|
}
|
|
|
|
void pop(lua_State* L_, int n = 1) const noexcept {
|
|
stateless_reference::pop(L_, n);
|
|
}
|
|
|
|
int registry_index() const noexcept {
|
|
return stateless_reference::registry_index();
|
|
}
|
|
|
|
bool valid() const noexcept {
|
|
return stateless_reference::valid(lua_state());
|
|
}
|
|
|
|
bool valid(lua_State* L_) const noexcept {
|
|
return stateless_reference::valid(L_);
|
|
}
|
|
|
|
const void* pointer() const noexcept {
|
|
return stateless_reference::pointer(lua_state());
|
|
}
|
|
|
|
explicit operator bool() const noexcept {
|
|
return valid();
|
|
}
|
|
|
|
type get_type() const noexcept {
|
|
return stateless_reference::get_type(lua_state());
|
|
}
|
|
|
|
lua_State* lua_state() const noexcept {
|
|
return luastate;
|
|
}
|
|
};
|
|
|
|
template <bool lb, bool rb>
|
|
inline bool operator==(const basic_reference<lb>& l, const basic_reference<rb>& r) noexcept {
|
|
auto ppl = stack::push_pop(l);
|
|
auto ppr = stack::push_pop(r);
|
|
return lua_compare(l.lua_state(), -1, -2, LUA_OPEQ) == 1;
|
|
}
|
|
|
|
template <bool lb, bool rb>
|
|
inline bool operator!=(const basic_reference<lb>& l, const basic_reference<rb>& r) noexcept {
|
|
return !operator==(l, r);
|
|
}
|
|
|
|
template <bool lb>
|
|
inline bool operator==(const basic_reference<lb>& l, const stack_reference& r) noexcept {
|
|
auto ppl = stack::push_pop(l);
|
|
return lua_compare(l.lua_state(), -1, r.stack_index(), LUA_OPEQ) == 1;
|
|
}
|
|
|
|
template <bool lb>
|
|
inline bool operator!=(const basic_reference<lb>& l, const stack_reference& r) noexcept {
|
|
return !operator==(l, r);
|
|
}
|
|
|
|
template <bool rb>
|
|
inline bool operator==(const stack_reference& l, const basic_reference<rb>& r) noexcept {
|
|
auto ppr = stack::push_pop(r);
|
|
return lua_compare(l.lua_state(), -1, r.stack_index(), LUA_OPEQ) == 1;
|
|
}
|
|
|
|
template <bool rb>
|
|
inline bool operator!=(const stack_reference& l, const basic_reference<rb>& r) noexcept {
|
|
return !operator==(l, r);
|
|
}
|
|
|
|
template <bool lb>
|
|
inline bool operator==(const basic_reference<lb>& lhs, const lua_nil_t&) noexcept {
|
|
return !lhs.valid();
|
|
}
|
|
|
|
template <bool rb>
|
|
inline bool operator==(const lua_nil_t&, const basic_reference<rb>& rhs) noexcept {
|
|
return !rhs.valid();
|
|
}
|
|
|
|
template <bool lb>
|
|
inline bool operator!=(const basic_reference<lb>& lhs, const lua_nil_t&) noexcept {
|
|
return lhs.valid();
|
|
}
|
|
|
|
template <bool rb>
|
|
inline bool operator!=(const lua_nil_t&, const basic_reference<rb>& rhs) noexcept {
|
|
return rhs.valid();
|
|
}
|
|
|
|
inline bool operator==(const stateless_reference& l, const stateless_reference& r) noexcept {
|
|
return l.registry_index() == r.registry_index();
|
|
}
|
|
|
|
inline bool operator!=(const stateless_reference& l, const stateless_reference& r) noexcept {
|
|
return l.registry_index() != r.registry_index();
|
|
}
|
|
|
|
inline bool operator==(const stateless_reference& lhs, const lua_nil_t&) noexcept {
|
|
return lhs.registry_index() == LUA_REFNIL;
|
|
}
|
|
|
|
inline bool operator==(const lua_nil_t&, const stateless_reference& rhs) noexcept {
|
|
return rhs.registry_index() == LUA_REFNIL;
|
|
}
|
|
|
|
inline bool operator!=(const stateless_reference& lhs, const lua_nil_t&) noexcept {
|
|
return lhs.registry_index() != LUA_REFNIL;
|
|
}
|
|
|
|
inline bool operator!=(const lua_nil_t&, const stateless_reference& rhs) noexcept {
|
|
return rhs.registry_index() != LUA_REFNIL;
|
|
}
|
|
|
|
struct stateless_reference_equals : public stateless_stack_reference_equals {
|
|
using is_transparent = std::true_type;
|
|
|
|
stateless_reference_equals(lua_State* L_) noexcept : stateless_stack_reference_equals(L_) {
|
|
}
|
|
|
|
bool operator()(const lua_nil_t& lhs, const stateless_reference& rhs) const noexcept {
|
|
return rhs.equals(lua_state(), lhs);
|
|
}
|
|
|
|
bool operator()(const stateless_reference& lhs, const lua_nil_t& rhs) const noexcept {
|
|
return lhs.equals(lua_state(), rhs);
|
|
}
|
|
|
|
bool operator()(const stateless_reference& lhs, const stateless_reference& rhs) const noexcept {
|
|
return lhs.equals(lua_state(), rhs);
|
|
}
|
|
};
|
|
|
|
struct reference_equals : public stack_reference_equals {
|
|
using is_transparent = std::true_type;
|
|
|
|
template <bool rb>
|
|
bool operator()(const lua_nil_t& lhs, const basic_reference<rb>& rhs) const noexcept {
|
|
return lhs == rhs;
|
|
}
|
|
|
|
template <bool lb>
|
|
bool operator()(const basic_reference<lb>& lhs, const lua_nil_t& rhs) const noexcept {
|
|
return lhs == rhs;
|
|
}
|
|
|
|
template <bool lb, bool rb>
|
|
bool operator()(const basic_reference<lb>& lhs, const basic_reference<rb>& rhs) const noexcept {
|
|
return lhs == rhs;
|
|
}
|
|
|
|
template <bool lb>
|
|
bool operator()(const basic_reference<lb>& lhs, const stack_reference& rhs) const noexcept {
|
|
return lhs == rhs;
|
|
}
|
|
|
|
template <bool rb>
|
|
bool operator()(const stack_reference& lhs, const basic_reference<rb>& rhs) const noexcept {
|
|
return lhs == rhs;
|
|
}
|
|
};
|
|
|
|
struct stateless_reference_hash : public stateless_stack_reference_hash {
|
|
using argument_type = stateless_reference;
|
|
using result_type = std::size_t;
|
|
using is_transparent = std::true_type;
|
|
|
|
stateless_reference_hash(lua_State* L_) noexcept : stateless_stack_reference_hash(L_) {
|
|
}
|
|
|
|
result_type operator()(const stateless_reference& lhs) const noexcept {
|
|
std::hash<const void*> h;
|
|
return h(lhs.pointer(lua_state()));
|
|
}
|
|
};
|
|
|
|
struct reference_hash : public stack_reference_hash {
|
|
using argument_type = reference;
|
|
using result_type = std::size_t;
|
|
using is_transparent = std::true_type;
|
|
|
|
template <bool lb>
|
|
result_type operator()(const basic_reference<lb>& lhs) const noexcept {
|
|
std::hash<const void*> h;
|
|
return h(lhs.pointer());
|
|
}
|
|
};
|
|
} // namespace sol
|
|
|
|
#endif // SOL_REFERENCE_HPP
|