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// sol2
// The MIT License (MIT)
// Copyright (c) 2013-2022 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_VARIADIC_ARGS_HPP
#define SOL_VARIADIC_ARGS_HPP
#include <sol/stack.hpp>
#include <sol/stack_proxy.hpp>
#include <sol/stack_iterator.hpp>
#include <limits>
#include <iterator>
namespace sol {
struct variadic_args {
private:
lua_State* L;
int index;
int stacktop;
public:
typedef stack_proxy reference_type;
typedef stack_proxy value_type;
typedef stack_proxy* pointer;
typedef std::ptrdiff_t difference_type;
typedef std::size_t size_type;
typedef stack_iterator<stack_proxy, false> iterator;
typedef stack_iterator<stack_proxy, true> const_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
variadic_args() = default;
variadic_args(lua_State* luastate, int stackindex = -1) : L(luastate), index(lua_absindex(luastate, stackindex)), stacktop(lua_gettop(luastate)) {
}
variadic_args(lua_State* luastate, int stackindex, int lastindex) : L(luastate), index(lua_absindex(luastate, stackindex)), stacktop(lastindex) {
}
variadic_args(const variadic_args&) = default;
variadic_args& operator=(const variadic_args&) = default;
variadic_args(variadic_args&& o) : L(o.L), index(o.index), stacktop(o.stacktop) {
// Must be manual, otherwise destructor will screw us
// return count being 0 is enough to keep things clean
// but will be thorough
o.L = nullptr;
o.index = 0;
o.stacktop = 0;
}
variadic_args& operator=(variadic_args&& o) {
L = o.L;
index = o.index;
stacktop = o.stacktop;
// Must be manual, otherwise destructor will screw us
// return count being 0 is enough to keep things clean
// but will be thorough
o.L = nullptr;
o.index = 0;
o.stacktop = 0;
return *this;
}
iterator begin() {
return iterator(L, index, stacktop + 1);
}
iterator end() {
return iterator(L, stacktop + 1, stacktop + 1);
}
const_iterator begin() const {
return const_iterator(L, index, stacktop + 1);
}
const_iterator end() const {
return const_iterator(L, stacktop + 1, stacktop + 1);
}
const_iterator cbegin() const {
return begin();
}
const_iterator cend() const {
return end();
}
reverse_iterator rbegin() {
return std::reverse_iterator<iterator>(begin());
}
reverse_iterator rend() {
return std::reverse_iterator<iterator>(end());
}
const_reverse_iterator rbegin() const {
return std::reverse_iterator<const_iterator>(begin());
}
const_reverse_iterator rend() const {
return std::reverse_iterator<const_iterator>(end());
}
const_reverse_iterator crbegin() const {
return std::reverse_iterator<const_iterator>(cbegin());
}
const_reverse_iterator crend() const {
return std::reverse_iterator<const_iterator>(cend());
}
int push() const {
return push(L);
}
int push(lua_State* target) const {
int pushcount = 0;
for (int i = index; i <= stacktop; ++i) {
lua_pushvalue(L, i);
pushcount += 1;
}
if (target != L) {
lua_xmove(L, target, pushcount);
}
return pushcount;
}
template <typename T>
decltype(auto) get(difference_type index_offset = 0) const {
return stack::get<T>(L, index + static_cast<int>(index_offset));
}
type get_type(difference_type index_offset = 0) const noexcept {
return type_of(L, index + static_cast<int>(index_offset));
}
stack_proxy operator[](difference_type index_offset) const {
return stack_proxy(L, index + static_cast<int>(index_offset));
}
lua_State* lua_state() const {
return L;
};
int stack_index() const {
return index;
};
int leftover_count() const {
return stacktop - (index - 1);
}
std::size_t size() const {
return static_cast<std::size_t>(leftover_count());
}
int top() const {
return stacktop;
}
};
namespace stack {
template <>
struct unqualified_getter<variadic_args> {
static variadic_args get(lua_State* L, int index, record& tracking) {
tracking.last = 0;
return variadic_args(L, index);
}
};
template <>
struct unqualified_pusher<variadic_args> {
static int push(lua_State* L, const variadic_args& ref) {
return ref.push(L);
}
};
} // namespace stack
} // namespace sol
#endif // SOL_VARIADIC_ARGS_HPP
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