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Diffstat (limited to 'lib/sol2/include/sol/stack_check_unqualified.hpp')
| -rw-r--r-- | lib/sol2/include/sol/stack_check_unqualified.hpp | 606 |
1 files changed, 0 insertions, 606 deletions
diff --git a/lib/sol2/include/sol/stack_check_unqualified.hpp b/lib/sol2/include/sol/stack_check_unqualified.hpp deleted file mode 100644 index 025961c..0000000 --- a/lib/sol2/include/sol/stack_check_unqualified.hpp +++ /dev/null @@ -1,606 +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_STACK_CHECK_UNQUALIFIED_HPP -#define SOL_STACK_CHECK_UNQUALIFIED_HPP - -#include "stack_core.hpp" -#include "usertype_traits.hpp" -#include "inheritance.hpp" -#include <memory> -#include <functional> -#include <utility> -#include <cmath> -#if defined(SOL_CXX17_FEATURES) && SOL_CXX17_FEATURES -#include <optional> -#if defined(SOL_STD_VARIANT) && SOL_STD_VARIANT -#include <variant> -#endif // SOL_STD_VARIANT -#endif // SOL_CXX17_FEATURES - -namespace sol { namespace stack { - namespace stack_detail { - template <typename T, bool poptable = true> - inline bool check_metatable(lua_State* L, int index = -2) { - const auto& metakey = usertype_traits<T>::metatable(); - luaL_getmetatable(L, &metakey[0]); - const type expectedmetatabletype = static_cast<type>(lua_type(L, -1)); - if (expectedmetatabletype != type::lua_nil) { - if (lua_rawequal(L, -1, index) == 1) { - lua_pop(L, 1 + static_cast<int>(poptable)); - return true; - } - } - lua_pop(L, 1); - return false; - } - - template <type expected, int (*check_func)(lua_State*, int)> - struct basic_check { - template <typename Handler> - static bool check(lua_State* L, int index, Handler&& handler, record& tracking) { - tracking.use(1); - bool success = check_func(L, index) == 1; - if (!success) { - // expected type, actual type - handler(L, index, expected, type_of(L, index), ""); - } - return success; - } - }; - } // namespace stack_detail - - template <typename T, typename> - struct unqualified_interop_checker { - template <typename Handler> - static bool check(lua_State*, int, type, Handler&&, record&) { - return false; - } - }; - - template <typename T, typename> - struct qualified_interop_checker { - template <typename Handler> - static bool check(lua_State* L, int index, type index_type, Handler&& handler, record& tracking) { - return stack_detail::unqualified_interop_check<T>(L, index, index_type, std::forward<Handler>(handler), tracking); - } - }; - - template <typename T, type expected, typename> - struct unqualified_checker { - template <typename Handler> - static bool check(lua_State* L, int index, Handler&& handler, record& tracking) { - if constexpr (std::is_same_v<T, bool>) { - tracking.use(1); - bool success = lua_isboolean(L, index) == 1; - if (!success) { - // expected type, actual type - handler(L, index, expected, type_of(L, index), ""); - } - return success; - } - else if constexpr (meta::any_same_v<T, char /* , char8_t*/, char16_t, char32_t>) { - return stack::check<std::basic_string<T>>(L, index, std::forward<Handler>(handler), tracking); - } - else if constexpr (std::is_integral_v<T> || std::is_same_v<T, lua_Integer>) { - tracking.use(1); -#if SOL_LUA_VERSION >= 503 -#if defined(SOL_STRINGS_ARE_NUMBERS) && SOL_STRINGS_ARE_NUMBERS - int isnum = 0; - lua_tointegerx(L, index, &isnum); - const bool success = isnum != 0; - if (!success) { - // expected type, actual type - handler(L, index, type::number, type_of(L, index), detail::not_a_number_or_number_string_integral); - } -#elif (defined(SOL_SAFE_NUMERICS) && SOL_SAFE_NUMERICS) && !(defined(SOL_NO_CHECK_NUMBER_PRECISION) && SOL_NO_CHECK_NUMBER_PRECISION) - // this check is precise, does not convert - if (lua_isinteger(L, index) == 1) { - return true; - } - const bool success = false; - if (!success) { - // expected type, actual type - handler(L, index, type::number, type_of(L, index), detail::not_a_number_integral); - } -#else - type t = type_of(L, index); - const bool success = t == type::number; -#endif // If numbers are enabled, use the imprecise check - if (!success) { - // expected type, actual type - handler(L, index, type::number, type_of(L, index), detail::not_a_number); - } - return success; -#else -#if !defined(SOL_STRINGS_ARE_NUMBERS) || !SOL_STRINGS_ARE_NUMBERS - // must pre-check, because it will convert - type t = type_of(L, index); - if (t != type::number) { - // expected type, actual type - handler(L, index, type::number, t, detail::not_a_number); - return false; - } -#endif // Do not allow strings to be numbers -#if (defined(SOL_SAFE_NUMERICS) && SOL_SAFE_NUMERICS) && !(defined(SOL_NO_CHECK_NUMBER_PRECISION) && SOL_NO_CHECK_NUMBER_PRECISION) - int isnum = 0; - const lua_Number v = lua_tonumberx(L, index, &isnum); - const bool success = isnum != 0 && static_cast<lua_Number>(llround(v)) == v; -#else - const bool success = true; -#endif // Safe numerics and number precision checking - if (!success) { - // expected type, actual type -#if defined(SOL_STRINGS_ARE_NUMBERS) && SOL_STRINGS_ARE_NUMBERS - handler(L, index, type::number, type_of(L, index), detail::not_a_number_or_number_string); -#elif (defined(SOL_SAFE_NUMERICS) && SOL_SAFE_NUMERICS) - handler(L, index, type::number, t, detail::not_a_number_or_number_string); -#else - handler(L, index, type::number, t, detail::not_a_number); -#endif - } - return success; -#endif // Lua Version 5.3 versus others - } - else if constexpr (std::is_floating_point_v<T> || std::is_same_v<T, lua_Number>) { - tracking.use(1); -#if defined(SOL_STRINGS_ARE_NUMBERS) && SOL_STRINGS_ARE_NUMBERS - bool success = lua_isnumber(L, index) == 1; - if (!success) { - // expected type, actual type - handler(L, index, type::number, type_of(L, index), detail::not_a_number_or_number_string); - } - return success; -#else - type t = type_of(L, index); - bool success = t == type::number; - if (!success) { - // expected type, actual type - handler(L, index, type::number, t, detail::not_a_number); - } - return success; -#endif // Strings are Numbers - } - else if constexpr(meta::any_same_v<T, type, this_state, this_main_state, this_environment, variadic_args>) { - (void)L; - (void)index; - (void)handler; - tracking.use(0); - return true; - } - else if constexpr (is_unique_usertype_v<T>) { - using proper_T = typename unique_usertype_traits<T>::type; - const type indextype = type_of(L, index); - tracking.use(1); - if (indextype != type::userdata) { - handler(L, index, type::userdata, indextype, "value is not a userdata"); - return false; - } - if (lua_getmetatable(L, index) == 0) { - return true; - } - int metatableindex = lua_gettop(L); - if (stack_detail::check_metatable<detail::unique_usertype<proper_T>>(L, metatableindex)) { - void* memory = lua_touserdata(L, index); - memory = detail::align_usertype_unique_destructor(memory); - detail::unique_destructor& pdx = *static_cast<detail::unique_destructor*>(memory); - bool success = &detail::usertype_unique_alloc_destroy<proper_T, T> == pdx; - if (!success) { - memory = detail::align_usertype_unique_tag<true>(memory); -#if 0 - // New version -#else - const char*& name_tag = *static_cast<const char**>(memory); - success = usertype_traits<T>::qualified_name() == name_tag; -#endif - if (!success) { - handler(L, index, type::userdata, indextype, "value is a userdata but is not the correct unique usertype"); - } - } - return success; - } - lua_pop(L, 1); - handler(L, index, type::userdata, indextype, "unrecognized userdata (not pushed by sol?)"); - return false; - } - else if constexpr (meta::any_same_v<T, lua_nil_t, -#if defined(SOL_CXX_17_FEATURES) && SOL_CXX_17_FEATURES - std::nullopt_t, -#endif - nullopt_t>) { - bool success = lua_isnil(L, index); - if (success) { - tracking.use(1); - return success; - } - tracking.use(0); - success = lua_isnone(L, index); - if (!success) { - // expected type, actual type - handler(L, index, expected, type_of(L, index), ""); - } - return success; - } - else if constexpr (std::is_same_v<T, env_key_t>) { - tracking.use(1); - type t = type_of(L, index); - if (t == type::table || t == type::none || t == type::lua_nil || t == type::userdata) { - return true; - } - handler(L, index, type::table, t, "value cannot not have a valid environment"); - return true; - } - else if constexpr (std::is_same_v<T, detail::non_lua_nil_t>) { - return !stack::unqualified_check<lua_nil_t>(L, index, std::forward<Handler>(handler), tracking); - } - else if constexpr (meta::is_specialization_of_v<T, basic_lua_table>) { - tracking.use(1); - type t = type_of(L, index); - if (t != type::table) { - handler(L, index, type::table, t, "value is not a table"); - return false; - } - return true; - } - else if constexpr (meta::is_specialization_of_v<T, basic_bytecode>) { - tracking.use(1); - type t = type_of(L, index); - if (t != type::function) { - handler(L, index, type::function, t, "value is not a function that can be dumped"); - return false; - } - return true; - } - else if constexpr(meta::is_specialization_of_v<T, basic_environment>) { - tracking.use(1); - if (lua_getmetatable(L, index) == 0) { - return true; - } - type t = type_of(L, -1); - if (t == type::table || t == type::none || t == type::lua_nil) { - lua_pop(L, 1); - return true; - } - if (t != type::userdata) { - lua_pop(L, 1); - handler(L, index, type::table, t, "value does not have a valid metatable"); - return false; - } - return true; - } - else if constexpr (std::is_same_v<T, metatable_key_t>) { - tracking.use(1); - if (lua_getmetatable(L, index) == 0) { - return true; - } - type t = type_of(L, -1); - if (t == type::table || t == type::none || t == type::lua_nil) { - lua_pop(L, 1); - return true; - } - if (t != type::userdata) { - lua_pop(L, 1); - handler(L, index, expected, t, "value does not have a valid metatable"); - return false; - } - return true; - } - else if constexpr (expected == type::userdata) { - if constexpr (meta::any_same_v<T, userdata_value> || meta::is_specialization_of_v<T, basic_userdata>) { - tracking.use(1); - type t = type_of(L, index); - bool success = t == type::userdata; - if (!success) { - // expected type, actual type - handler(L, index, type::userdata, t, ""); - } - return success; - } - else if constexpr (meta::is_specialization_of_v<T, user>) { - unqualified_checker<lightuserdata_value, type::userdata> c; - (void)c; - return c.check(L, index, std::forward<Handler>(handler), tracking); - } - else { - if constexpr (std::is_pointer_v<T>) { - return check_usertype<T>(L, index, std::forward<Handler>(handler), tracking); - } - else if constexpr (meta::is_specialization_of_v<T, std::reference_wrapper>) { - using T_internal = typename T::type; - return stack::check<T_internal>(L, index, std::forward<Handler>(handler), tracking); - } - else { - return check_usertype<T>(L, index, std::forward<Handler>(handler), tracking); - } - } - } - else if constexpr (expected == type::poly) { - tracking.use(1); - bool success = is_lua_reference_v<T> || !lua_isnone(L, index); - if (!success) { - // expected type, actual type - handler(L, index, type::poly, type_of(L, index), ""); - } - return success; - } - else if constexpr (expected == type::lightuserdata) { - tracking.use(1); - type t = type_of(L, index); - bool success = t == type::userdata || t == type::lightuserdata; - if (!success) { - // expected type, actual type - handler(L, index, type::lightuserdata, t, ""); - } - return success; - } - else if constexpr (expected == type::function) { - if constexpr (meta::any_same_v<T, lua_CFunction, std::remove_pointer_t<lua_CFunction>, c_closure>) { - tracking.use(1); - bool success = lua_iscfunction(L, index) == 1; - if (!success) { - // expected type, actual type - handler(L, index, expected, type_of(L, index), ""); - } - return success; - } - else { - tracking.use(1); - type t = type_of(L, index); - if (t == type::lua_nil || t == type::none || t == type::function) { - // allow for lua_nil to be returned - return true; - } - if (t != type::userdata && t != type::table) { - handler(L, index, type::function, t, "must be a function or table or a userdata"); - return false; - } - // Do advanced check for call-style userdata? - static const auto& callkey = to_string(meta_function::call); - if (lua_getmetatable(L, index) == 0) { - // No metatable, no __call key possible - handler(L, index, type::function, t, "value is not a function and does not have overriden metatable"); - return false; - } - if (lua_isnoneornil(L, -1)) { - lua_pop(L, 1); - handler(L, index, type::function, t, "value is not a function and does not have valid metatable"); - return false; - } - lua_getfield(L, -1, &callkey[0]); - if (lua_isnoneornil(L, -1)) { - lua_pop(L, 2); - handler(L, index, type::function, t, "value's metatable does not have __call overridden in metatable, cannot call this type"); - return false; - } - // has call, is definitely a function - lua_pop(L, 2); - return true; - } - } - else if constexpr (expected == type::table) { - tracking.use(1); - type t = type_of(L, index); - if (t == type::table) { - return true; - } - if (t != type::userdata) { - handler(L, index, type::table, t, "value is not a table or a userdata that can behave like one"); - return false; - } - return true; - } - else { - tracking.use(1); - const type indextype = type_of(L, index); - bool success = expected == indextype; - if (!success) { - // expected type, actual type, message - handler(L, index, expected, indextype, ""); - } - return success; - } - } - }; - - template <typename T> - struct unqualified_checker<non_null<T>, type::userdata> : unqualified_checker<T, lua_type_of_v<T>> {}; - - template <typename T> - struct unqualified_checker<detail::as_value_tag<T>, type::userdata> { - template <typename Handler> - static bool check(lua_State* L, int index, Handler&& handler, record& tracking) { - const type indextype = type_of(L, index); - return check(types<T>(), L, index, indextype, std::forward<Handler>(handler), tracking); - } - - template <typename U, typename Handler> - static bool check(types<U>, lua_State* L, int index, type indextype, Handler&& handler, record& tracking) { - if constexpr (std::is_same_v<T, lightuserdata_value> || std::is_same_v<T, userdata_value> || std::is_same_v<T, userdata> || std::is_same_v<T, lightuserdata>) { - tracking.use(1); - if (indextype != type::userdata) { - handler(L, index, type::userdata, indextype, "value is not a valid userdata"); - return false; - } - return true; - } - else { -#if defined(SOL_ENABLE_INTEROP) && SOL_ENABLE_INTEROP - if (stack_detail::interop_check<U>(L, index, indextype, handler, tracking)) { - return true; - } -#endif // interop extensibility - tracking.use(1); - if (indextype != type::userdata) { - handler(L, index, type::userdata, indextype, "value is not a valid userdata"); - return false; - } - if (lua_getmetatable(L, index) == 0) { - return true; - } - int metatableindex = lua_gettop(L); - if (stack_detail::check_metatable<U>(L, metatableindex)) - return true; - if (stack_detail::check_metatable<U*>(L, metatableindex)) - return true; - if (stack_detail::check_metatable<detail::unique_usertype<U>>(L, metatableindex)) - return true; - if (stack_detail::check_metatable<as_container_t<U>>(L, metatableindex)) - return true; - bool success = false; - bool has_derived = derive<T>::value || weak_derive<T>::value; - if (has_derived) { - #if defined(SOL_SAFE_STACK_CHECK) && SOL_SAFE_STACK_CHECK - luaL_checkstack(L, 1, detail::not_enough_stack_space_string); - #endif // make sure stack doesn't overflow - auto pn = stack::pop_n(L, 1); - lua_pushstring(L, &detail::base_class_check_key()[0]); - lua_rawget(L, metatableindex); - if (type_of(L, -1) != type::lua_nil) { - void* basecastdata = lua_touserdata(L, -1); - detail::inheritance_check_function ic = reinterpret_cast<detail::inheritance_check_function>(basecastdata); - success = ic(usertype_traits<T>::qualified_name()); - } - } - lua_pop(L, 1); - if (!success) { - handler(L, index, type::userdata, indextype, "value at this index does not properly reflect the desired type"); - return false; - } - return true; - } - } - }; - - template <typename T> - struct unqualified_checker<detail::as_pointer_tag<T>, type::userdata> { - template <typename Handler> - static bool check(lua_State* L, int index, type indextype, Handler&& handler, record& tracking) { - if (indextype == type::lua_nil) { - tracking.use(1); - return true; - } - return check_usertype<std::remove_pointer_t<T>>(L, index, std::forward<Handler>(handler), tracking); - } - - template <typename Handler> - static bool check(lua_State* L, int index, Handler&& handler, record& tracking) { - const type indextype = type_of(L, index); - return check(L, index, indextype, std::forward<Handler>(handler), tracking); - } - }; - - template <typename... Args> - struct unqualified_checker<std::tuple<Args...>, type::poly> { - template <typename Handler> - static bool check(lua_State* L, int index, Handler&& handler, record& tracking) { - return stack::multi_check<Args...>(L, index, std::forward<Handler>(handler), tracking); - } - }; - - template <typename A, typename B> - struct unqualified_checker<std::pair<A, B>, type::poly> { - template <typename Handler> - static bool check(lua_State* L, int index, Handler&& handler, record& tracking) { - return stack::multi_check<A, B>(L, index, std::forward<Handler>(handler), tracking); - } - }; - - template <typename T> - struct unqualified_checker<optional<T>, type::poly> { - template <typename Handler> - static bool check(lua_State* L, int index, Handler&&, record& tracking) { - type t = type_of(L, index); - if (t == type::none) { - tracking.use(0); - return true; - } - if (t == type::lua_nil) { - tracking.use(1); - return true; - } - return stack::unqualified_check<T>(L, index, no_panic, tracking); - } - }; - -#if defined(SOL_CXX17_FEATURES) && SOL_CXX17_FEATURES - - template <typename T> - struct unqualified_checker<std::optional<T>, type::poly> { - template <typename Handler> - static bool check(lua_State* L, int index, Handler&&, record& tracking) { - type t = type_of(L, index); - if (t == type::none) { - tracking.use(0); - return true; - } - if (t == type::lua_nil) { - tracking.use(1); - return true; - } - return stack::check<T>(L, index, no_panic, tracking); - } - }; - -#if defined(SOL_STD_VARIANT) && SOL_STD_VARIANT - - template <typename... Tn> - struct unqualified_checker<std::variant<Tn...>, type::poly> { - typedef std::variant<Tn...> V; - typedef std::variant_size<V> V_size; - typedef std::integral_constant<bool, V_size::value == 0> V_is_empty; - - template <typename Handler> - static bool is_one(std::integral_constant<std::size_t, 0>, lua_State* L, int index, Handler&& handler, record& tracking) { - if constexpr (V_is_empty::value) { - if (lua_isnone(L, index)) { - return true; - } - } - tracking.use(1); - handler(L, index, type::poly, type_of(L, index), "value does not fit any type present in the variant"); - return false; - } - - template <std::size_t I, typename Handler> - static bool is_one(std::integral_constant<std::size_t, I>, lua_State* L, int index, Handler&& handler, record& tracking) { - typedef std::variant_alternative_t<I - 1, V> T; - record temp_tracking = tracking; - if (stack::check<T>(L, index, no_panic, temp_tracking)) { - tracking = temp_tracking; - return true; - } - return is_one(std::integral_constant<std::size_t, I - 1>(), L, index, std::forward<Handler>(handler), tracking); - } - - template <typename Handler> - static bool check(lua_State* L, int index, Handler&& handler, record& tracking) { - return is_one(std::integral_constant<std::size_t, V_size::value>(), L, index, std::forward<Handler>(handler), tracking); - } - }; - -#endif // SOL_STD_VARIANT - -#endif // SOL_CXX17_FEATURES -}} // namespace sol::stack - -#endif // SOL_STACK_CHECK_UNQUALIFIED_HPP |