sol2/sol/usertype.hpp
ThePhD 0c9d567d0a "automatic usertypes" are now applied everywhere, regardless of what happens
new sol::filters (currently undocumented)
new gc tests, new plain_type tests
core abstractions over usertypes streamlined
SOL_STRINGS_ARE_NUMBERS triggers added
update single
2017-08-21 15:25:43 -04:00

102 lines
4.2 KiB
C++

// The MIT License (MIT)
// Copyright (c) 2013-2017 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_USERTYPE_HPP
#define SOL_USERTYPE_HPP
#include "stack.hpp"
#include "usertype_metatable.hpp"
#include "simple_usertype_metatable.hpp"
#include "container_usertype_metatable.hpp"
#include <memory>
namespace sol {
template<typename T>
class usertype {
private:
std::unique_ptr<usertype_detail::registrar, detail::deleter> metatableregister;
template<typename... Args>
usertype(detail::verified_tag, Args&&... args) : metatableregister(detail::make_unique_deleter<usertype_metatable<T, std::make_index_sequence<sizeof...(Args) / 2>, Args...>, detail::deleter>(std::forward<Args>(args)...)) {
static_assert(detail::has_destructor<Args...>::value, "this type does not have an explicit destructor declared; please pass a custom destructor function wrapped in sol::destruct, especially if the type does not have an accessible (private) destructor");
}
template<typename... Args>
usertype(detail::add_destructor_tag, Args&&... args) : usertype(detail::verified, std::forward<Args>(args)..., "__gc", default_destructor) {}
template<typename... Args>
usertype(detail::check_destructor_tag, Args&&... args) : usertype(meta::condition<meta::all<std::is_destructible<T>, meta::neg<detail::has_destructor<Args...>>>, detail::add_destructor_tag, detail::verified_tag>(), std::forward<Args>(args)...) {}
public:
template<typename... Args>
usertype(Args&&... args) : usertype(meta::condition<meta::all<std::is_default_constructible<T>, meta::neg<detail::has_constructor<Args...>>>, decltype(default_constructor), detail::check_destructor_tag>(), std::forward<Args>(args)...) {}
template<typename... Args, typename... CArgs>
usertype(constructors<CArgs...> constructorlist, Args&&... args) : usertype(detail::check_destructor_tag(), std::forward<Args>(args)..., "new", constructorlist) {}
template<typename... Args, typename... Fxs>
usertype(constructor_wrapper<Fxs...> constructorlist, Args&&... args) : usertype(detail::check_destructor_tag(), std::forward<Args>(args)..., "new", constructorlist) {}
template<typename... Args>
usertype(simple_tag, lua_State* L, Args&&... args) : metatableregister(detail::make_unique_deleter<simple_usertype_metatable<T>, detail::deleter>(L, std::forward<Args>(args)...)) {}
usertype_detail::registrar* registrar_data() {
return metatableregister.get();
}
int push(lua_State* L) {
int r = metatableregister->push_um(L);
metatableregister = nullptr;
return r;
}
};
template<typename T>
class simple_usertype : public usertype<T> {
private:
typedef usertype<T> base_t;
lua_State* state;
public:
template<typename... Args>
simple_usertype(lua_State* L, Args&&... args) : base_t(simple, L, std::forward<Args>(args)...), state(L) {}
template <typename N, typename F>
void set(N&& n, F&& f) {
auto meta = static_cast<simple_usertype_metatable<T>*>(base_t::registrar_data());
meta->add(state, std::forward<N>(n), std::forward<F>(f));
}
};
namespace stack {
template<typename T>
struct pusher<usertype<T>> {
static int push(lua_State* L, usertype<T>& user) {
return user.push(L);
}
};
} // stack
} // sol
#endif // SOL_USERTYPE_HPP