Function luaB_setmetatable

src/Chain/libraries/glua/lbaselib.cpp:237–247

static int luaB_setmetatable(lua_State *L) {
    int t = lua_type(L, 2);
    luaL_checktype(L, 1, LUA_TTABLE);
    luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
        "nil or table expected");
    if (luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL)
        return luaL_error(L, "cannot change a protected metatable");
    lua_settop(L, 2);
    lua_setmetatable(L, 1);
    return 1;
}


static int luaB_rawequal(lua_State *L) {