mirror of https://github.com/OpenMW/openmw.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
// sol2
|
|
|
|
// The MIT License (MIT)
|
|
|
|
// Copyright (c) 2013-2021 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_PROTECTED_HANDLER_HPP
|
|
#define SOL_PROTECTED_HANDLER_HPP
|
|
|
|
#include <sol/reference.hpp>
|
|
#include <sol/stack.hpp>
|
|
#include <sol/protected_function_result.hpp>
|
|
#include <sol/unsafe_function.hpp>
|
|
#include <cstdint>
|
|
|
|
namespace sol { namespace detail {
|
|
inline const char (&default_handler_name())[9] {
|
|
static const char name[9] = "sol.\xF0\x9F\x94\xA9";
|
|
return name;
|
|
}
|
|
|
|
template <bool ShouldPush, typename Target = reference>
|
|
struct protected_handler {
|
|
lua_State* m_L;
|
|
const Target& target;
|
|
int stack_index;
|
|
|
|
protected_handler(std::false_type, lua_State* L_, const Target& target_) : m_L(L_), target(target_), stack_index(0) {
|
|
if (ShouldPush) {
|
|
stack_index = lua_gettop(L_) + 1;
|
|
target.push(L_);
|
|
}
|
|
}
|
|
|
|
protected_handler(std::true_type, lua_State* L_, const Target& target_) : m_L(L_), target(target_), stack_index(0) {
|
|
if (ShouldPush) {
|
|
stack_index = target.stack_index();
|
|
}
|
|
}
|
|
|
|
protected_handler(lua_State* L_, const Target& target_) : protected_handler(meta::boolean<is_stack_based_v<Target>>(), L_, target_) {
|
|
}
|
|
|
|
bool valid() const noexcept {
|
|
return ShouldPush;
|
|
}
|
|
|
|
~protected_handler() {
|
|
if constexpr (!is_stack_based_v<Target>) {
|
|
if (stack_index != 0) {
|
|
lua_remove(m_L, stack_index);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
template <typename Base, typename T>
|
|
inline basic_function<Base> force_cast(T& p) {
|
|
return p;
|
|
}
|
|
|
|
template <typename Reference, bool IsMainReference = false>
|
|
inline Reference get_default_handler(lua_State* L_) {
|
|
if (is_stack_based_v<Reference> || L_ == nullptr)
|
|
return Reference(L_, lua_nil);
|
|
L_ = IsMainReference ? main_thread(L_, L_) : L_;
|
|
lua_getglobal(L_, default_handler_name());
|
|
auto pp = stack::pop_n(L_, 1);
|
|
return Reference(L_, -1);
|
|
}
|
|
|
|
template <typename T>
|
|
inline void set_default_handler(lua_State* L, const T& ref) {
|
|
if (L == nullptr) {
|
|
return;
|
|
}
|
|
if (!ref.valid()) {
|
|
#if SOL_IS_ON(SOL_SAFE_STACK_CHECK_I_)
|
|
luaL_checkstack(L, 1, detail::not_enough_stack_space_generic);
|
|
#endif // make sure stack doesn't overflow
|
|
lua_pushnil(L);
|
|
lua_setglobal(L, default_handler_name());
|
|
}
|
|
else {
|
|
ref.push(L);
|
|
lua_setglobal(L, default_handler_name());
|
|
}
|
|
}
|
|
}} // namespace sol::detail
|
|
|
|
#endif // SOL_PROTECTED_HANDLER_HPP
|