ANTLR grammar license [closed]

Question

I'm planning to make an implementation of Lua for the DLR, and i would like to use the listed Lua 5.1 grammar here. However i can't see a license that it was released under, so can someone please kindly point me in the direction of the license it uses?

Answer 1

Except for the lexical parts, the grammar looks like it's copied from the Lua reference manual, which is subject to the MIT license.

Answer 2

As it doesn't say (and a brief dig around the site doesn't indicate), the default state is that the copyright resides with the author. You'll have to contact him/her directly to use it legally.