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-rw-r--r--lib/sol2/include/sol/call.hpp906
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diff --git a/lib/sol2/include/sol/call.hpp b/lib/sol2/include/sol/call.hpp
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--- a/lib/sol2/include/sol/call.hpp
+++ /dev/null
@@ -1,906 +0,0 @@
-// sol3
-
-// The MIT License (MIT)
-
-// Copyright (c) 2013-2019 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_CALL_HPP
-#define SOL_CALL_HPP
-
-#include "property.hpp"
-#include "protect.hpp"
-#include "wrapper.hpp"
-#include "trampoline.hpp"
-#include "policies.hpp"
-#include "stack.hpp"
-#include "unique_usertype_traits.hpp"
-
-namespace sol {
- namespace u_detail {
-
- } // namespace u_detail
-
- namespace policy_detail {
- template <int I, int... In>
- inline void handle_policy(static_stack_dependencies<I, In...>, lua_State* L, int&) {
- if constexpr (sizeof...(In) == 0) {
- (void)L;
- return;
- }
- else {
- absolute_index ai(L, I);
- if (type_of(L, ai) != type::userdata) {
- return;
- }
- lua_createtable(L, static_cast<int>(sizeof...(In)), 0);
- stack_reference deps(L, -1);
- auto per_dep = [&L, &deps](int i) {
-#if defined(SOL_SAFE_STACK_CHECK) && SOL_SAFE_STACK_CHECK
- luaL_checkstack(L, 1, detail::not_enough_stack_space_generic);
-#endif // make sure stack doesn't overflow
- lua_pushvalue(L, i);
- luaL_ref(L, deps.stack_index());
- };
- (void)per_dep;
- (void)detail::swallow{ int(), (per_dep(In), int())... };
- lua_setuservalue(L, ai);
- }
- }
-
- template <int... In>
- inline void handle_policy(returns_self_with<In...>, lua_State* L, int& pushed) {
- pushed = stack::push(L, raw_index(1));
- handle_policy(static_stack_dependencies<-1, In...>(), L, pushed);
- }
-
- inline void handle_policy(const stack_dependencies& sdeps, lua_State* L, int&) {
- absolute_index ai(L, sdeps.target);
- if (type_of(L, ai) != type::userdata) {
- return;
- }
- lua_createtable(L, static_cast<int>(sdeps.size()), 0);
- stack_reference deps(L, -1);
-#if defined(SOL_SAFE_STACK_CHECK) && SOL_SAFE_STACK_CHECK
- luaL_checkstack(L, static_cast<int>(sdeps.size()), detail::not_enough_stack_space_generic);
-#endif // make sure stack doesn't overflow
- for (std::size_t i = 0; i < sdeps.size(); ++i) {
- lua_pushvalue(L, sdeps.stack_indices[i]);
- luaL_ref(L, deps.stack_index());
- }
- lua_setuservalue(L, ai);
- }
-
- template <typename P, meta::disable<std::is_base_of<detail::policy_base_tag, meta::unqualified_t<P>>> = meta::enabler>
- inline void handle_policy(P&& p, lua_State* L, int& pushed) {
- pushed = std::forward<P>(p)(L, pushed);
- }
- } // namespace policy_detail
-
- namespace function_detail {
- inline int no_construction_error(lua_State* L) {
- return luaL_error(L, "sol: cannot call this constructor (tagged as non-constructible)");
- }
- } // namespace function_detail
-
- namespace call_detail {
-
- template <typename R, typename W>
- inline auto& pick(std::true_type, property_wrapper<R, W>& f) {
- return f.read();
- }
-
- template <typename R, typename W>
- inline auto& pick(std::false_type, property_wrapper<R, W>& f) {
- return f.write();
- }
-
- template <typename T, typename List>
- struct void_call : void_call<T, meta::function_args_t<List>> {};
-
- template <typename T, typename... Args>
- struct void_call<T, types<Args...>> {
- static void call(Args...) {
- }
- };
-
- template <typename T, bool checked, bool clean_stack>
- struct constructor_match {
- T* obj_;
-
- constructor_match(T* o) : obj_(o) {
- }
-
- template <typename Fx, std::size_t I, typename... R, typename... Args>
- int operator()(types<Fx>, meta::index_value<I>, types<R...> r, types<Args...> a, lua_State* L, int, int start) const {
- detail::default_construct func{};
- return stack::call_into_lua<checked, clean_stack>(r, a, L, start, func, obj_);
- }
- };
-
- namespace overload_detail {
- template <std::size_t... M, typename Match, typename... Args>
- inline int overload_match_arity(types<>, std::index_sequence<>, std::index_sequence<M...>, Match&&, lua_State* L, int, int, Args&&...) {
- return luaL_error(L, "sol: no matching function call takes this number of arguments and the specified types");
- }
-
- template <typename Fx, typename... Fxs, std::size_t I, std::size_t... In, std::size_t... M, typename Match, typename... Args>
- inline int overload_match_arity(types<Fx, Fxs...>, std::index_sequence<I, In...>, std::index_sequence<M...>, Match&& matchfx, lua_State* L,
- int fxarity, int start, Args&&... args) {
- typedef lua_bind_traits<meta::unwrap_unqualified_t<Fx>> traits;
- typedef meta::tuple_types<typename traits::return_type> return_types;
- typedef typename traits::free_args_list args_list;
- // compile-time eliminate any functions that we know ahead of time are of improper arity
- if constexpr (!traits::runtime_variadics_t::value && meta::find_in_pack_v<meta::index_value<traits::free_arity>, meta::index_value<M>...>::value) {
- return overload_match_arity(types<Fxs...>(),
- std::index_sequence<In...>(),
- std::index_sequence<M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- else {
- if constexpr (!traits::runtime_variadics_t::value) {
- if (traits::free_arity != fxarity) {
- return overload_match_arity(types<Fxs...>(),
- std::index_sequence<In...>(),
- std::index_sequence<traits::free_arity, M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- }
- stack::record tracking{};
- if (!stack::stack_detail::check_types(args_list(), L, start, no_panic, tracking)) {
- return overload_match_arity(types<Fxs...>(),
- std::index_sequence<In...>(),
- std::index_sequence<M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- return matchfx(types<Fx>(), meta::index_value<I>(), return_types(), args_list(), L, fxarity, start, std::forward<Args>(args)...);
- }
- }
-
- template <std::size_t... M, typename Match, typename... Args>
- inline int overload_match_arity_single(
- types<>, std::index_sequence<>, std::index_sequence<M...>, Match&& matchfx, lua_State* L, int fxarity, int start, Args&&... args) {
- return overload_match_arity(types<>(),
- std::index_sequence<>(),
- std::index_sequence<M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
-
- template <typename Fx, std::size_t I, std::size_t... M, typename Match, typename... Args>
- inline int overload_match_arity_single(
- types<Fx>, std::index_sequence<I>, std::index_sequence<M...>, Match&& matchfx, lua_State* L, int fxarity, int start, Args&&... args) {
- typedef lua_bind_traits<meta::unwrap_unqualified_t<Fx>> traits;
- typedef meta::tuple_types<typename traits::return_type> return_types;
- typedef typename traits::free_args_list args_list;
- // compile-time eliminate any functions that we know ahead of time are of improper arity
- if constexpr (!traits::runtime_variadics_t::value
- && meta::find_in_pack_v<meta::index_value<traits::free_arity>, meta::index_value<M>...>::value) {
- return overload_match_arity(types<>(),
- std::index_sequence<>(),
- std::index_sequence<M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- if (!traits::runtime_variadics_t::value && traits::free_arity != fxarity) {
- return overload_match_arity(types<>(),
- std::index_sequence<>(),
- std::index_sequence<traits::free_arity, M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- return matchfx(types<Fx>(), meta::index_value<I>(), return_types(), args_list(), L, fxarity, start, std::forward<Args>(args)...);
- }
-
- template <typename Fx, typename Fx1, typename... Fxs, std::size_t I, std::size_t I1, std::size_t... In, std::size_t... M, typename Match,
- typename... Args>
- inline int overload_match_arity_single(types<Fx, Fx1, Fxs...>, std::index_sequence<I, I1, In...>, std::index_sequence<M...>, Match&& matchfx,
- lua_State* L, int fxarity, int start, Args&&... args) {
- typedef lua_bind_traits<meta::unwrap_unqualified_t<Fx>> traits;
- typedef meta::tuple_types<typename traits::return_type> return_types;
- typedef typename traits::free_args_list args_list;
- // compile-time eliminate any functions that we know ahead of time are of improper arity
- if constexpr (!traits::runtime_variadics_t::value && meta::find_in_pack_v<meta::index_value<traits::free_arity>, meta::index_value<M>...>::value) {
- return overload_match_arity(types<Fx1, Fxs...>(),
- std::index_sequence<I1, In...>(),
- std::index_sequence<M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- else {
- if constexpr (!traits::runtime_variadics_t::value) {
- if (traits::free_arity != fxarity) {
- return overload_match_arity(types<Fx1, Fxs...>(),
- std::index_sequence<I1, In...>(),
- std::index_sequence<traits::free_arity, M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- }
- stack::record tracking{};
- if (!stack::stack_detail::check_types(args_list(), L, start, no_panic, tracking)) {
- return overload_match_arity(types<Fx1, Fxs...>(),
- std::index_sequence<I1, In...>(),
- std::index_sequence<M...>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
- return matchfx(types<Fx>(), meta::index_value<I>(), return_types(), args_list(), L, fxarity, start, std::forward<Args>(args)...);
- }
- }
- } // namespace overload_detail
-
- template <typename... Functions, typename Match, typename... Args>
- inline int overload_match_arity(Match&& matchfx, lua_State* L, int fxarity, int start, Args&&... args) {
- return overload_detail::overload_match_arity_single(types<Functions...>(),
- std::make_index_sequence<sizeof...(Functions)>(),
- std::index_sequence<>(),
- std::forward<Match>(matchfx),
- L,
- fxarity,
- start,
- std::forward<Args>(args)...);
- }
-
- template <typename... Functions, typename Match, typename... Args>
- inline int overload_match(Match&& matchfx, lua_State* L, int start, Args&&... args) {
- int fxarity = lua_gettop(L) - (start - 1);
- return overload_match_arity<Functions...>(std::forward<Match>(matchfx), L, fxarity, start, std::forward<Args>(args)...);
- }
-
- template <typename T, typename... TypeLists, typename Match, typename... Args>
- inline int construct_match(Match&& matchfx, lua_State* L, int fxarity, int start, Args&&... args) {
- // use same overload resolution matching as all other parts of the framework
- return overload_match_arity<decltype(void_call<T, TypeLists>::call)...>(
- std::forward<Match>(matchfx), L, fxarity, start, std::forward<Args>(args)...);
- }
-
- template <typename T, bool checked, bool clean_stack, typename... TypeLists>
- inline int construct_trampolined(lua_State* L) {
- static const auto& meta = usertype_traits<T>::metatable();
- int argcount = lua_gettop(L);
- call_syntax syntax = argcount > 0 ? stack::get_call_syntax(L, usertype_traits<T>::user_metatable(), 1) : call_syntax::dot;
- argcount -= static_cast<int>(syntax);
-
- T* obj = detail::usertype_allocate<T>(L);
- reference userdataref(L, -1);
- stack::stack_detail::undefined_metatable umf(L, &meta[0], &stack::stack_detail::set_undefined_methods_on<T>);
- umf();
-
- construct_match<T, TypeLists...>(constructor_match<T, checked, clean_stack>(obj), L, argcount, 1 + static_cast<int>(syntax));
-
- userdataref.push();
- return 1;
- }
-
- template <typename T, bool checked, bool clean_stack, typename... TypeLists>
- inline int construct(lua_State* L) {
- return detail::static_trampoline<&construct_trampolined<T, checked, clean_stack, TypeLists...>>(L);
- }
-
- template <typename F, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename = void>
- struct agnostic_lua_call_wrapper {
- using wrap = wrapper<meta::unqualified_t<F>>;
-
- template <typename Fx, typename... Args>
- static int call(lua_State* L, Fx&& f, Args&&... args) {
- if constexpr(is_lua_reference_v<meta::unqualified_t<Fx>>) {
- if constexpr (is_index) {
- return stack::push(L, std::forward<Fx>(f), std::forward<Args>(args)...);
- }
- else {
- std::forward<Fx>(f) = stack::unqualified_get<F>(L, boost + (is_variable ? 3 : 1));
- return 0;
- }
- }
- else {
- using traits_type = typename wrap::traits_type;
- using fp_t = typename traits_type::function_pointer_type;
- constexpr bool is_function_pointer_convertible
- = std::is_class_v<meta::unqualified_t<F>> && std::is_convertible_v<std::decay_t<Fx>, fp_t>;
- if constexpr (is_function_pointer_convertible) {
- fp_t fx = f;
- return agnostic_lua_call_wrapper<fp_t, is_index, is_variable, checked, boost, clean_stack>{}.call(
- L, fx, std::forward<Args>(args)...);
- }
- else {
- using returns_list = typename wrap::returns_list;
- using args_list = typename wrap::free_args_list;
- using caller = typename wrap::caller;
- return stack::call_into_lua<checked, clean_stack>(
- returns_list(), args_list(), L, boost + 1, caller(), std::forward<Fx>(f), std::forward<Args>(args)...);
- }
- }
- }
- };
-
- template <typename T, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<var_wrapper<T>, is_index, is_variable, checked, boost, clean_stack, C> {
- template <typename F>
- static int call(lua_State* L, F&& f) {
- if constexpr (is_index) {
- constexpr bool is_stack = is_stack_based_v<meta::unqualified_t<decltype(detail::unwrap(f.value()))>>;
- if constexpr (clean_stack && !is_stack) {
- lua_settop(L, 0);
- }
- return stack::push_reference(L, detail::unwrap(f.value()));
- }
- else {
- if constexpr (std::is_const_v<meta::unwrapped_t<T>>) {
- return luaL_error(L, "sol: cannot write to a readonly (const) variable");
- }
- else {
- using R = meta::unwrapped_t<T>;
- if constexpr (std::is_assignable_v<std::add_lvalue_reference_t<meta::unqualified_t<R>>, R>) {
- detail::unwrap(f.value()) = stack::unqualified_get<meta::unwrapped_t<T>>(L, boost + (is_variable ? 3 : 1));
- if (clean_stack) {
- lua_settop(L, 0);
- }
- return 0;
- }
- else {
- return luaL_error(L, "sol: cannot write to this variable: copy assignment/constructor not available");
- }
- }
- }
- }
- };
-
- template <bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<lua_CFunction_ref, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State* L, lua_CFunction_ref f) {
- return f(L);
- }
- };
-
- template <bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<lua_CFunction, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State* L, lua_CFunction f) {
- return f(L);
- }
- };
-
-#if defined(SOL_NOEXCEPT_FUNCTION_TYPE) && SOL_NOEXCEPT_FUNCTION_TYPE
- template <bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<detail::lua_CFunction_noexcept, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State* L, detail::lua_CFunction_noexcept f) {
- return f(L);
- }
- };
-#endif // noexcept function types
-
- template <bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<detail::no_prop, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State* L, const detail::no_prop&) {
- return luaL_error(L, is_index ? "sol: cannot read from a writeonly property" : "sol: cannot write to a readonly property");
- }
- };
-
- template <bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<no_construction, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State* L, const no_construction&) {
- return function_detail::no_construction_error(L);
- }
- };
-
- template <typename... Args, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<bases<Args...>, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State*, const bases<Args...>&) {
- // Uh. How did you even call this, lul
- return 0;
- }
- };
-
- template <typename T, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct agnostic_lua_call_wrapper<std::reference_wrapper<T>, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State* L, std::reference_wrapper<T> f) {
- agnostic_lua_call_wrapper<T, is_index, is_variable, checked, boost, clean_stack> alcw{};
- return alcw.call(L, f.get());
- }
- };
-
- template <typename T, typename F, bool is_index, bool is_variable, bool checked = detail::default_safe_function_calls, int boost = 0,
- bool clean_stack = true, typename = void>
- struct lua_call_wrapper {
- template <typename Fx, typename... Args>
- static int call(lua_State* L, Fx&& fx, Args&&... args) {
- if constexpr (std::is_member_function_pointer_v<F>) {
- using wrap = wrapper<F>;
- using object_type = typename wrap::object_type;
- if constexpr (sizeof...(Args) < 1) {
- using Ta = meta::conditional_t<std::is_void_v<T>, object_type, T>;
-#if defined(SOL_SAFE_USERTYPE) && SOL_SAFE_USERTYPE
- auto maybeo = stack::check_get<Ta*>(L, 1);
- if (!maybeo || maybeo.value() == nullptr) {
- return luaL_error(L,
- "sol: received nil for 'self' argument (use ':' for accessing member functions, make sure member variables are "
- "preceeded by the "
- "actual object with '.' syntax)");
- }
- object_type* o = static_cast<object_type*>(maybeo.value());
- return call(L, std::forward<Fx>(fx), *o);
-#else
- object_type& o = static_cast<object_type&>(*stack::unqualified_get<non_null<Ta*>>(L, 1));
- return call(L, std::forward<Fx>(fx), o);
-#endif // Safety
- }
- else {
- using returns_list = typename wrap::returns_list;
- using args_list = typename wrap::args_list;
- using caller = typename wrap::caller;
- return stack::call_into_lua<checked, clean_stack>(
- returns_list(), args_list(), L, boost + (is_variable ? 3 : 2), caller(), std::forward<Fx>(fx), std::forward<Args>(args)...);
- }
- }
- else if constexpr (std::is_member_object_pointer_v<F>) {
- using wrap = wrapper<F>;
- using object_type = typename wrap::object_type;
- if constexpr (is_index) {
- if constexpr (sizeof...(Args) < 1) {
- using Ta = meta::conditional_t<std::is_void_v<T>, object_type, T>;
-#if defined(SOL_SAFE_USERTYPE) && SOL_SAFE_USERTYPE
- auto maybeo = stack::check_get<Ta*>(L, 1);
- if (!maybeo || maybeo.value() == nullptr) {
- if (is_variable) {
- return luaL_error(L, "sol: 'self' argument is lua_nil (bad '.' access?)");
- }
- return luaL_error(L, "sol: 'self' argument is lua_nil (pass 'self' as first argument)");
- }
- object_type* o = static_cast<object_type*>(maybeo.value());
- return call(L, std::forward<Fx>(fx), *o);
-#else
- object_type& o = static_cast<object_type&>(*stack::get<non_null<Ta*>>(L, 1));
- return call(L, std::forward<Fx>(fx), o);
-#endif // Safety
- }
- else {
- using returns_list = typename wrap::returns_list;
- using caller = typename wrap::caller;
- return stack::call_into_lua<checked, clean_stack>(
- returns_list(), types<>(), L, boost + (is_variable ? 3 : 2), caller(), std::forward<Fx>(fx), std::forward<Args>(args)...);
- }
- }
- else {
- using traits_type = lua_bind_traits<F>;
- using return_type = typename traits_type::return_type;
- constexpr bool is_const = std::is_const_v<std::remove_reference_t<return_type>>;
- if constexpr (is_const) {
- (void)fx;
- (void)detail::swallow{ 0, (static_cast<void>(args), 0)... };
- return luaL_error(L, "sol: cannot write to a readonly (const) variable");
- }
- else {
- using u_return_type = meta::unqualified_t<return_type>;
- constexpr bool is_assignable = std::is_copy_assignable_v<u_return_type> || std::is_array_v<u_return_type>;
- if constexpr (!is_assignable) {
- (void)fx;
- (void)detail::swallow{ 0, ((void)args, 0)... };
- return luaL_error(L, "sol: cannot write to this variable: copy assignment/constructor not available");
- }
- else {
- using args_list = typename wrap::args_list;
- using caller = typename wrap::caller;
- if constexpr (sizeof...(Args) > 0) {
- return stack::call_into_lua<checked, clean_stack>(types<void>(),
- args_list(),
- L,
- boost + (is_variable ? 3 : 2),
- caller(),
- std::forward<Fx>(fx),
- std::forward<Args>(args)...);
- }
- else {
- using Ta = meta::conditional_t<std::is_void_v<T>, object_type, T>;
- #if defined(SOL_SAFE_USERTYPE) && SOL_SAFE_USERTYPE
- auto maybeo = stack::check_get<Ta*>(L, 1);
- if (!maybeo || maybeo.value() == nullptr) {
- if (is_variable) {
- return luaL_error(L, "sol: received nil for 'self' argument (bad '.' access?)");
- }
- return luaL_error(L, "sol: received nil for 'self' argument (pass 'self' as first argument)");
- }
- object_type* po = static_cast<object_type*>(maybeo.value());
- object_type& o = *po;
- #else
- object_type& o = static_cast<object_type&>(*stack::get<non_null<Ta*>>(L, 1));
- #endif // Safety
-
- return stack::call_into_lua<checked, clean_stack>(
- types<void>(), args_list(), L, boost + (is_variable ? 3 : 2), caller(), std::forward<Fx>(fx), o);
- }
- }
- }
- }
- }
- else {
- agnostic_lua_call_wrapper<F, is_index, is_variable, checked, boost, clean_stack> alcw{};
- return alcw.call(L, std::forward<Fx>(fx), std::forward<Args>(args)...);
- }
- }
- };
-
- template <typename T, typename F, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, readonly_wrapper<F>, is_index, is_variable, checked, boost, clean_stack, C> {
- using traits_type = lua_bind_traits<F>;
- using wrap = wrapper<F>;
- using object_type = typename wrap::object_type;
-
- static int call(lua_State* L, readonly_wrapper<F>&& rw) {
- if constexpr (!is_index) {
- (void)rw;
- return luaL_error(L, "sol: cannot write to a sol::readonly variable");
- }
- else {
- lua_call_wrapper<T, F, true, is_variable, checked, boost, clean_stack, C> lcw;
- return lcw.call(L, std::move(rw.value()));
- }
- }
-
- static int call(lua_State* L, readonly_wrapper<F>&& rw, object_type& o) {
- if constexpr (!is_index) {
- (void)o;
- return call(L, std::move(rw));
- }
- else {
- lua_call_wrapper<T, F, true, is_variable, checked, boost, clean_stack, C> lcw;
- return lcw.call(L, rw.value(), o);
- }
- }
-
- static int call(lua_State* L, const readonly_wrapper<F>& rw) {
- if constexpr (!is_index) {
- (void)rw;
- return luaL_error(L, "sol: cannot write to a sol::readonly variable");
- }
- else {
- lua_call_wrapper<T, F, true, is_variable, checked, boost, clean_stack, C> lcw;
- return lcw.call(L, rw.value());
- }
- }
-
- static int call(lua_State* L, const readonly_wrapper<F>& rw, object_type& o) {
- if constexpr (!is_index) {
- (void)o;
- return call(L, rw);
- }
- else {
- lua_call_wrapper<T, F, true, is_variable, checked, boost, clean_stack, C> lcw;
- return lcw.call(L, rw.value(), o);
- }
- }
- };
-
- template <typename T, typename... Args, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, constructor_list<Args...>, is_index, is_variable, checked, boost, clean_stack, C> {
- typedef constructor_list<Args...> F;
-
- static int call(lua_State* L, F&) {
- const auto& meta = usertype_traits<T>::metatable();
- int argcount = lua_gettop(L);
- call_syntax syntax = argcount > 0 ? stack::get_call_syntax(L, usertype_traits<T>::user_metatable(), 1) : call_syntax::dot;
- argcount -= static_cast<int>(syntax);
-
- T* obj = detail::usertype_allocate<T>(L);
- reference userdataref(L, -1);
- stack::stack_detail::undefined_metatable umf(L, &meta[0], &stack::stack_detail::set_undefined_methods_on<T>);
- umf();
-
- construct_match<T, Args...>(constructor_match<T, false, clean_stack>(obj), L, argcount, boost + 1 + static_cast<int>(syntax));
-
- userdataref.push();
- return 1;
- }
- };
-
- template <typename T, typename... Cxs, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, constructor_wrapper<Cxs...>, is_index, is_variable, checked, boost, clean_stack, C> {
- typedef constructor_wrapper<Cxs...> F;
-
- struct onmatch {
- template <typename Fx, std::size_t I, typename... R, typename... Args>
- int operator()(types<Fx>, meta::index_value<I>, types<R...> r, types<Args...> a, lua_State* L, int, int start, F& f) {
- const auto& meta = usertype_traits<T>::metatable();
- T* obj = detail::usertype_allocate<T>(L);
- reference userdataref(L, -1);
- stack::stack_detail::undefined_metatable umf(L, &meta[0], &stack::stack_detail::set_undefined_methods_on<T>);
- umf();
-
- auto& func = std::get<I>(f.functions);
- stack::call_into_lua<checked, clean_stack>(r, a, L, boost + start, func, detail::implicit_wrapper<T>(obj));
-
- userdataref.push();
- return 1;
- }
- };
-
- static int call(lua_State* L, F& f) {
- call_syntax syntax = stack::get_call_syntax(L, usertype_traits<T>::user_metatable(), 1);
- int syntaxval = static_cast<int>(syntax);
- int argcount = lua_gettop(L) - syntaxval;
- return construct_match<T, meta::pop_front_type_t<meta::function_args_t<Cxs>>...>(onmatch(), L, argcount, 1 + syntaxval, f);
- }
- };
-
- template <typename T, typename Fx, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, destructor_wrapper<Fx>, is_index, is_variable, checked, boost, clean_stack, C> {
-
- template <typename F>
- static int call(lua_State* L, F&& f) {
- if constexpr (std::is_void_v<Fx>) {
- return detail::usertype_alloc_destruct<T>(L);
- }
- else {
- using uFx = meta::unqualified_t<Fx>;
- lua_call_wrapper<T, uFx, is_index, is_variable, checked, boost, clean_stack> lcw{};
- return lcw.call(L, std::forward<F>(f).fx);
- }
- }
- };
-
- template <typename T, typename... Fs, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, overload_set<Fs...>, is_index, is_variable, checked, boost, clean_stack, C> {
- typedef overload_set<Fs...> F;
-
- struct on_match {
- template <typename Fx, std::size_t I, typename... R, typename... Args>
- int operator()(types<Fx>, meta::index_value<I>, types<R...>, types<Args...>, lua_State* L, int, int, F& fx) {
- auto& f = std::get<I>(fx.functions);
- return lua_call_wrapper<T, Fx, is_index, is_variable, checked, boost>{}.call(L, f);
- }
- };
-
- static int call(lua_State* L, F& fx) {
- return overload_match_arity<Fs...>(on_match(), L, lua_gettop(L), 1, fx);
- }
- };
-
- template <typename T, typename... Fs, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, factory_wrapper<Fs...>, is_index, is_variable, checked, boost, clean_stack, C> {
- typedef factory_wrapper<Fs...> F;
-
- struct on_match {
- template <typename Fx, std::size_t I, typename... R, typename... Args>
- int operator()(types<Fx>, meta::index_value<I>, types<R...>, types<Args...>, lua_State* L, int, int, F& fx) {
- auto& f = std::get<I>(fx.functions);
- return lua_call_wrapper<T, Fx, is_index, is_variable, checked, boost, clean_stack>{}.call(L, f);
- }
- };
-
- static int call(lua_State* L, F& fx) {
- return overload_match_arity<Fs...>(on_match(), L, lua_gettop(L) - boost, 1 + boost, fx);
- }
- };
-
- template <typename T, typename R, typename W, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, property_wrapper<R, W>, is_index, is_variable, checked, boost, clean_stack, C> {
- typedef meta::conditional_t<is_index, R, W> P;
- typedef meta::unqualified_t<P> U;
- typedef wrapper<U> wrap;
- typedef lua_bind_traits<U> traits_type;
- typedef meta::unqualified_t<typename traits_type::template arg_at<0>> object_type;
-
- template <typename F, typename... Args>
- static int call(lua_State* L, F&& f, Args&&... args) {
- constexpr bool is_specialized = meta::any<
- std::is_same<U, detail::no_prop>,
- meta::is_specialization_of<U, var_wrapper>,
- meta::is_specialization_of<U, constructor_wrapper>,
- meta::is_specialization_of<U, constructor_list>,
- std::is_member_pointer<U>>::value;
- if constexpr (is_specialized) {
- if constexpr (is_index) {
- decltype(auto) p = f.read();
- lua_call_wrapper<T, meta::unqualified_t<decltype(p)>, is_index, is_variable, checked, boost, clean_stack> lcw{};
- return lcw.call(L, p, std::forward<Args>(args)...);
- }
- else {
- decltype(auto) p = f.write();
- lua_call_wrapper<T, meta::unqualified_t<decltype(p)>, is_index, is_variable, checked, boost, clean_stack> lcw{};
- return lcw.call(L, p, std::forward<Args>(args)...);
- }
- }
- else {
- constexpr bool non_class_object_type = meta::any<std::is_void<object_type>,
- meta::boolean<lua_type_of<meta::unwrap_unqualified_t<object_type>>::value != type::userdata>>::value;
- if constexpr (non_class_object_type) {
- // The type being void means we don't have any arguments, so it might be a free functions?
- using args_list = typename traits_type::free_args_list;
- using returns_list = typename wrap::returns_list;
- using caller = typename wrap::caller;
- if constexpr (is_index) {
- decltype(auto) pf = f.read();
- return stack::call_into_lua<checked, clean_stack>(
- returns_list(), args_list(), L, boost + (is_variable ? 3 : 2), caller(), pf);
- }
- else {
- decltype(auto) pf = f.write();
- return stack::call_into_lua<checked, clean_stack>(
- returns_list(), args_list(), L, boost + (is_variable ? 3 : 2), caller(), pf);
- }
- }
- else {
- using args_list = meta::pop_front_type_t<typename traits_type::free_args_list>;
- using Ta = T;
- using Oa = std::remove_pointer_t<object_type>;
-#if defined(SOL_SAFE_USERTYPE) && SOL_SAFE_USERTYPE
- auto maybeo = stack::check_get<Ta*>(L, 1);
- if (!maybeo || maybeo.value() == nullptr) {
- if (is_variable) {
- return luaL_error(L, "sol: 'self' argument is lua_nil (bad '.' access?)");
- }
- return luaL_error(L, "sol: 'self' argument is lua_nil (pass 'self' as first argument)");
- }
- Oa* o = static_cast<Oa*>(maybeo.value());
-#else
- Oa* o = static_cast<Oa*>(stack::get<non_null<Ta*>>(L, 1));
-#endif // Safety
- using returns_list = typename wrap::returns_list;
- using caller = typename wrap::caller;
- if constexpr (is_index) {
- decltype(auto) pf = f.read();
- return stack::call_into_lua<checked, clean_stack>(
- returns_list(), args_list(), L, boost + (is_variable ? 3 : 2), caller(), pf, detail::implicit_wrapper<Oa>(*o));
- }
- else {
- decltype(auto) pf = f.write();
- return stack::call_into_lua<checked, clean_stack>(
- returns_list(), args_list(), L, boost + (is_variable ? 3 : 2), caller(), pf, detail::implicit_wrapper<Oa>(*o));
- }
- }
- }
- }
- };
-
- template <typename T, typename V, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, protect_t<V>, is_index, is_variable, checked, boost, clean_stack, C> {
- typedef protect_t<V> F;
-
- template <typename... Args>
- static int call(lua_State* L, F& fx, Args&&... args) {
- return lua_call_wrapper<T, V, is_index, is_variable, true, boost, clean_stack>{}.call(L, fx.value, std::forward<Args>(args)...);
- }
- };
-
- template <typename T, typename F, typename... Policies, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, policy_wrapper<F, Policies...>, is_index, is_variable, checked, boost, clean_stack, C> {
- typedef policy_wrapper<F, Policies...> P;
-
- template <std::size_t... In>
- static int call(std::index_sequence<In...>, lua_State* L, P& fx) {
- int pushed = lua_call_wrapper<T, F, is_index, is_variable, checked, boost, false, C>{}.call(L, fx.value);
- (void)detail::swallow{ int(), (policy_detail::handle_policy(std::get<In>(fx.policies), L, pushed), int())... };
- return pushed;
- }
-
- static int call(lua_State* L, P& fx) {
- typedef typename P::indices indices;
- return call(indices(), L, fx);
- }
- };
-
- template <typename T, typename Y, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, yielding_t<Y>, is_index, is_variable, checked, boost, clean_stack, C> {
- template <typename F>
- static int call(lua_State* L, F&& f) {
- return lua_call_wrapper<T, meta::unqualified_t<Y>, is_index, is_variable, checked, boost, clean_stack>{}.call(L, f.func);
- }
- };
-
- template <typename T, typename Sig, typename P, bool is_index, bool is_variable, bool checked, int boost, bool clean_stack, typename C>
- struct lua_call_wrapper<T, function_arguments<Sig, P>, is_index, is_variable, checked, boost, clean_stack, C> {
- static int call(lua_State* L, const function_arguments<Sig, P>& f) {
- lua_call_wrapper<T, meta::unqualified_t<P>, is_index, is_variable, checked, boost, clean_stack> lcw{};
- return lcw.call(L, std::get<0>(f.arguments));
- }
-
- static int call(lua_State* L, function_arguments<Sig, P>&& f) {
- lua_call_wrapper<T, meta::unqualified_t<P>, is_index, is_variable, checked, boost, clean_stack> lcw{};
- return lcw.call(L, std::get<0>(std::move(f.arguments)));
- }
- };
-
- template <typename T, bool is_index, bool is_variable, int boost = 0, bool checked = detail::default_safe_function_calls, bool clean_stack = true,
- typename Fx, typename... Args>
- inline int call_wrapped(lua_State* L, Fx&& fx, Args&&... args) {
- using uFx = meta::unqualified_t<Fx>;
- if constexpr (meta::is_specialization_of_v<uFx, yielding_t>) {
- using real_fx = meta::unqualified_t<decltype(std::forward<Fx>(fx).func)>;
- lua_call_wrapper<T, real_fx, is_index, is_variable, checked, boost, clean_stack> lcw{};
- int nr = lcw.call(L, std::forward<Fx>(fx).func, std::forward<Args>(args)...);
- return lua_yield(L, nr);
- }
- else {
- lua_call_wrapper<T, uFx, is_index, is_variable, checked, boost, clean_stack> lcw{};
- return lcw.call(L, std::forward<Fx>(fx), std::forward<Args>(args)...);
- }
- }
-
- template <typename T, bool is_index, bool is_variable, typename F, int start = 1, bool checked = detail::default_safe_function_calls, bool clean_stack = true>
- inline int call_user(lua_State* L) {
- auto& fx = stack::unqualified_get<user<F>>(L, upvalue_index(start));
- return call_wrapped<T, is_index, is_variable, 0, checked, clean_stack>(L, fx);
- }
-
- template <typename T, typename = void>
- struct is_var_bind : std::false_type {};
-
- template <typename T>
- struct is_var_bind<T, std::enable_if_t<std::is_member_object_pointer<T>::value>> : std::true_type {};
-
- template <typename T>
- struct is_var_bind<T, std::enable_if_t<is_lua_reference_or_proxy<T>::value>> : std::true_type {};
-
- template <>
- struct is_var_bind<detail::no_prop> : std::true_type {};
-
- template <typename R, typename W>
- struct is_var_bind<property_wrapper<R, W>> : std::true_type {};
-
- template <typename T>
- struct is_var_bind<var_wrapper<T>> : std::true_type {};
-
- template <typename T>
- struct is_var_bind<readonly_wrapper<T>> : is_var_bind<meta::unqualified_t<T>> {};
-
- template <typename F, typename... Policies>
- struct is_var_bind<policy_wrapper<F, Policies...>> : is_var_bind<meta::unqualified_t<F>> {};
- } // namespace call_detail
-
- template <typename T>
- struct is_variable_binding : call_detail::is_var_bind<meta::unqualified_t<T>> {};
-
- template <typename T>
- using is_var_wrapper = meta::is_specialization_of<T, var_wrapper>;
-
- template <typename T>
- struct is_function_binding : meta::neg<is_variable_binding<T>> {};
-
-} // namespace sol
-
-#endif // SOL_CALL_HPP
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-06 23:01:50 +0000