Function luaX_lookahead

src/Chain/libraries/glua/llex.cpp:594–598

int luaX_lookahead(LexState *ls) {
    lua_assert(ls->lookahead.token == TK_EOS);
    ls->lookahead.token = llex(ls, &ls->lookahead.seminfo);
    return ls->lookahead.token;
}