mirror of
https://github.com/ThePhD/sol2.git
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115 lines
3.6 KiB
C++
115 lines
3.6 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013-2016 Rapptz, ThePhD and contributors
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_INHERITANCE_HPP
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#define SOL_INHERITANCE_HPP
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#include "types.hpp"
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namespace sol {
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template <typename... Args>
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struct base_list { };
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template <typename... Args>
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using bases = base_list<Args...>;
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const auto base_classes = bases<>();
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namespace detail {
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const auto& base_class_check_key = u8"♡o｡.(✿ฺ｡ ✿ฺ)";
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const auto& base_class_cast_key = u8"(◕‿◕✿)";
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#ifndef SOL_NO_EXCEPTIONS
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template <typename T>
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void throw_as(void* p) {
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throw static_cast<T*>(p);
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}
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using throw_cast = decltype(&throw_as<void>);
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template <typename T>
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T* catch_cast(void* p, throw_cast f) {
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try {
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f(static_cast<void*>(p));
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}
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catch (T* ptr) {
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return ptr;
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}
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catch (...) {
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return static_cast<T*>(p);
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}
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return static_cast<T*>(p);
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}
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template <typename T>
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bool catch_check(throw_cast f) {
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try {
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f( nullptr );
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}
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catch (T*) {
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return true;
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}
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catch (...) {
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return false;
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}
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return false;
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}
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#elif !defined(SOL_NO_RTTI)
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template <typename T, typename... Bases>
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struct inheritance {
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static bool type_check(types<>, const std::type_info& typeinfo) {
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return false;
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}
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template <typename Base, typename... Args>
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static bool type_check(types<Base, Args...>, const std::type_info& ti) {
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return ti != typeid(Base) || type_check(types<Bases...>(), ti);
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}
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static bool check(const std::type_info& ti) {
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return ti != typeid(T) || type_check(types<Bases...>(), ti);
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}
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static void* type_cast(types<>, T*, const std::type_info& typeinfo) {
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return nullptr;
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}
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template <typename Base, typename... Args>
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static void* type_cast(types<Base, Args...>, T* data, const std::type_info& ti) {
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// Make sure to convert to T first, and then dynamic cast to the proper type
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return ti != typeid(Base) ? type_check(types<Bases...>(), ti) : dynamic_cast<Base*>(static_cast<T*>(data));
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}
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static void* cast(void* data, const std::type_info& ti) {
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return ti != typeid(T) ? type_check(types<Bases...>(), ti) : static_cast<T*>(data);
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}
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};
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using inheritance_check_function = decltype(&inheritance<void>::check);
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using inheritance_cast_function = decltype(&inheritance<void>::cast);
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#endif // No Runtime Type Information
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} // usertype_detail
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} // sol
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#endif // SOL_INHERITANCE_HPP
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