Function lua_isstring

third-party/lua-5.3.5/src/lapi.c:283–286

LUA_API int lua_isstring (lua_State *L, int idx) {
  const TValue *o = index2addr(L, idx);
  return (ttisstring(o) || cvt2str(o));
}


LUA_API int lua_isuserdata (lua_State *L, int idx) {