traintastic/server/src/lua/checkvector.hpp

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/**
* server/src/lua/checkvector.hpp
*
* This file is part of the traintastic source code.
*
* Copyright (C) 2023 Reinder Feenstra
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef TRAINTASTIC_SERVER_LUA_CHECKVECTOR_HPP
#define TRAINTASTIC_SERVER_LUA_CHECKVECTOR_HPP
#include <lua.hpp>
#include <type_traits>
#include <vector>
#include <cstddef>
#include "check.hpp"
namespace Lua {
template<typename T>
std::vector<T> checkVector(lua_State* L, int index)
{
luaL_checktype(L, index, LUA_TTABLE);
std::vector<T> v;
lua_len(L, index);
const lua_Integer len = lua_tointeger(L, -1);
lua_pop(L, 1);
if(len > 0)
{
v.resize(len);
for(lua_Integer i = 1; i <= len; i++)
{
lua_geti(L, index, i);
v[i - 1] = check<T>(L, -1);
lua_pop(L, 1);
}
}
return v;
}
}
#endif