mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
82 lines
2.9 KiB
C++
82 lines
2.9 KiB
C++
// The MIT License (MIT)
|
|
|
|
// Copyright (c) 2013-2016 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_ENVIRONMENT_HPP
|
|
#define SOL_ENVIRONMENT_HPP
|
|
|
|
#include "table.hpp"
|
|
|
|
namespace sol {
|
|
|
|
template <typename base_type>
|
|
struct basic_environment : basic_table<base_type> {
|
|
private:
|
|
typedef basic_table<base_type> table_t;
|
|
public:
|
|
basic_environment() noexcept = default;
|
|
basic_environment(const basic_environment&) = default;
|
|
basic_environment(basic_environment&&) = default;
|
|
basic_environment& operator=(const basic_environment&) = default;
|
|
basic_environment& operator=(basic_environment&&) = default;
|
|
|
|
basic_environment(lua_State* L, sol::new_table t, const sol::reference& fallback) : table_t(L, std::move(t)) {
|
|
sol::stack_table mt(L, sol::new_table(0, 1));
|
|
mt.set(sol::meta_function::index, fallback);
|
|
this->set(metatable_key, mt);
|
|
mt.pop();
|
|
}
|
|
template <typename T, typename... Args, meta::enable<
|
|
meta::neg<std::is_same<meta::unqualified_t<T>, basic_environment>>,
|
|
meta::boolean<!(sizeof...(Args) == 2 && meta::any_same<new_table, meta::unqualified_t<Args>...>::value)>,
|
|
meta::boolean<!(sizeof...(Args) == 0 && std::is_base_of<proxy_base_tag, meta::unqualified_t<T>>::value)>
|
|
> = meta::enabler>
|
|
basic_environment(T&& arg, Args&&... args) : table_t(std::forward<T>(arg), std::forward<Args>(args)...) { }
|
|
|
|
template <typename T>
|
|
void set_on(const T& target) const {
|
|
lua_State* L = target.lua_state();
|
|
#if SOL_LUA_VERSION < 502
|
|
// Use lua_setfenv
|
|
target.push();
|
|
this->push();
|
|
lua_setfenv(L, -2);
|
|
target.pop();
|
|
#else
|
|
// Use upvalues as explained in Lua 5.2 and beyond's manual
|
|
target.push();
|
|
this->push();
|
|
if (lua_setupvalue(L, -2, 1) == nullptr) {
|
|
this->pop();
|
|
}
|
|
target.pop();
|
|
#endif
|
|
}
|
|
};
|
|
|
|
template <typename T, typename E>
|
|
void set_environment(const basic_environment<E>& env, const T& target) {
|
|
env.set_on(target);
|
|
}
|
|
|
|
} // sol
|
|
|
|
#endif // SOL_ENVIRONMENT_HPP
|