Usability of grammars-v4 contributions that don't have a license?

[Ross Patterson]

I know more than I'd care to about software licensing, so this isn't a noob question, although this is my first time doing anything with ANTLR.  I understand that the grammars-v4 repo explicitly has no common license, and expects each contributed parser to specify its licensing.  So, what about the ones that don't?  In the absence of a license, or a dedication to the public domain, copyright law applies, and it's up to the owner(s) to decide what to allow.

I would like to use, and to contribute improvements to, the Rexx parser (https://github.com/antlr/grammars-v4/commits/master/rexx).  But it doesn't have a license, either in a file or in the code (or even the test case).  Is there even a reason to include parsers nobody is allowed to use without permission in the collection?

Ross

[Wanadoo]

Dear Ross

surely you understand that there can’t be a general answer to this question.

I encourage you to reach out to the author of that specific grammar directly.

Eric 

Envoyé de mon iPhone

Le 26 févr. 2022 à 02:38, Ross Patterson <ross.pa...@gmail.com> a écrit :

I know more than I'd care to about software licensing, so this isn't a noob question, although this is my first time doing anything with ANTLR.  I understand that the grammars-v4 repo explicitly has no common license, and expects each contributed parser to specify its licensing.  So, what about the ones that don't?  In the absence of a license, or a dedication to the public domain, copyright law applies, and it's up to the owner(s) to decide what to allow.

I would like to use, and to contribute improvements to, the Rexx parser (https://github.com/antlr/grammars-v4/commits/master/rexx).  But it doesn't have a license, either in a file or in the code (or even the test case).  Is there even a reason to include parsers nobody is allowed to use without permission in the collection?

Ross

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[Terence Parr]

hi. yeah, sorry about that. In many cases we find things without licenses that we feel would be good to have, so included those grammars. sorry for any hassles.

Ter

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[Ross Patterson]

I've (just!) located the original source - https://github.com/candiduslynx/antlr4-rexx.  The original is under the MIT license, and I've asked the creator to submit a patch adding the license (https://github.com/candiduslynx/antlr4-rexx/blob/master/LICENSE) file to grammars-v4/rexx.

Ross

[Ross Patterson]

Actually, there can be.  It isn't up to me to make a decision (obviously), but code that isn't licensed doesn't even belong in the repo - absent a license, grant of permission, or dedication to the public domain, it's the private property of its author and can't be used by anyone else (at least in Berne Convention countries).  If it was my project, I wouldn't accept code without a clear statement of permission (ideally, a license).

Ross

[Terence Parr]

Thanks, Ross!

Ter

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[Andy]

Hi Ter, Have you chance to try and debug the code? Andy

 

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[Terence Parr]

sorry. not yet. Soon!

Ter

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[andy....@btinternet.com]

No worries. Andy

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[Ross Patterson]

The author has chosen to apply the Apache 2.0 license.  See PR antlr/grammars-v4#2529.

Ross

[Terence Parr]

 excellent. Thanks for chasing this down Ross!

Ter

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