sol2/sol/reference.hpp
ThePhD c0b565fa3d Renamed many parts of lua_function.hpp to make more sense.
Added pop() function to `reference`
`stack.hpp` now has many more functions to properly handle user data
`types.hpp` now has `userdata_t` and `lightuserdata_t` to faciliate `stack`'s `pop` and `push` operations
Class binding functionality built into `table` and `state`, as well as placed in `userdata` class in `userdata.hpp`
demangling detail now present for clang, gcc, and MSVC (somewhat for MSVC)
Constructor arity still needs to be handled for `userdata<T>`
tests updated and passing
2014-04-25 20:20:35 -04:00

99 lines
2.6 KiB
C++

// The MIT License (MIT)
// Copyright (c) 2013 Danny Y., Rapptz
// 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_REFERENCE_HPP
#define SOL_REFERENCE_HPP
#include "types.hpp"
namespace sol {
class reference {
private:
lua_State* L = nullptr; // non-owning
int ref = LUA_NOREF;
int copy() const {
push();
return luaL_ref(L, LUA_REGISTRYINDEX);
}
public:
reference() noexcept = default;
reference(lua_State* L, int index): L(L) {
lua_pushvalue(L, index);
ref = luaL_ref(L, LUA_REGISTRYINDEX);
}
virtual ~reference() {
luaL_unref(L, LUA_REGISTRYINDEX, ref);
}
void push() const noexcept {
lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
}
void pop() const noexcept {
lua_pop(L, 1);
}
reference(reference&& o) noexcept {
L = o.L;
ref = o.ref;
o.L = nullptr;
o.ref = LUA_NOREF;
}
reference& operator=(reference&& o) noexcept {
L = o.L;
ref = o.ref;
o.L = nullptr;
o.ref = LUA_NOREF;
return *this;
}
reference(const reference& o) noexcept {
L = o.L;
ref = o.copy();
}
reference& operator=(const reference& o) noexcept {
L = o.L;
ref = o.copy();
return *this;
}
type get_type() {
push();
int result = lua_type(L, -1);
lua_pop(L, 1);
return static_cast<type>(result);
}
lua_State* state() const noexcept {
return L;
}
};
} // sol
#endif // SOL_REFERENCE_HPP