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state_handle.cpp
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state_handle.cpp
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// Copyright (C) 2019 Tomoyuki Fujimori <moyu@dromozoa.com>
//
// This file is part of dromozoa-multi.
//
// dromozoa-multi 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 3 of the License, or
// (at your option) any later version.
//
// dromozoa-multi 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 dromozoa-multi. If not, see <http://www.gnu.org/licenses/>.
#include "common.hpp"
namespace dromozoa {
state_handle::state_handle(lua_State* state) : state_(state) {}
state_handle::~state_handle() {
if (state_) {
lua_close(state_);
}
}
lua_State* state_handle::get() const {
return state_;
}
lua_State* state_handle::release() {
lua_State* state = state_;
state_ = 0;
return state;
}
int state_handle::xcopy(lua_State* L, int arg) {
int top = lua_gettop(L);
for (int i = arg; i <= top; ++i) {
switch (lua_type(L, i)) {
case LUA_TNIL:
luaX_push(state_, luaX_nil);
break;
case LUA_TBOOLEAN:
luaX_push(state_, lua_toboolean(L, i));
break;
case LUA_TNUMBER:
luaX_push(state_, lua_tonumber(L, i));
break;
case LUA_TSTRING:
luaX_push(state_, luaX_to_string(L, i));
break;
case LUA_TLIGHTUSERDATA:
lua_pushlightuserdata(state_, lua_touserdata(L, i));
break;
default:
if (i > arg) {
lua_pop(state_, i - arg);
}
return luaL_argerror(L, i, "nil/boolean/number/string/lightuserdata expected");
}
}
return top - arg + 1;
}
}