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state for support of Python-like whitespace-/newline-sensitive languages [message #1855002]

Thu, 22 September 2022 20:32

Joel Greenyer

Messages: 20
Registered: October 2014

Junior Member

Hi all,
I am trying to implement a Python-like language which is whitespace-/newline-sensitive. I started with the Home Automation example with its synthetic:BEGIN and synthetic:END terminals and added a newline terminal ('\r'? '\n').

This however seem to be problematic, as Christian Dietrich said a few years ago:
"this is not a real supported usecase and will explode in all kind of situations => not beginner friendly" (https://www.eclipse.org/forums/index.php/t/1101327/)

Also what I found is
https://bugs.eclipse.org/bugs/show_bug.cgi?id=476690
and slides by Sebastian Zarnekow
https://www.slideshare.net/szarnekow/building-a-python-ide-with-xtext
which only give an incomplete guide on how to do this and reinforces the feeling of "will explode".

So is the bottom line in 2022 still that this is tricky to do?

Has anyone come up with a good solution meanwhile?
Are there any example projects that I could use as a starting point?

Thanks,

Joel

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Re: state for support of Python-like whitespace-/newline-sensitive languages [message #1855014 is a reply to message #1855002]

Fri, 23 September 2022 11:46

Christian Dietrich

Messages: 14453
Registered: July 2009

Senior Member

from my pov there is no update.
as stated before it depends on your usecase and requirements what works and what does not (e.g. serialization and formatting are tricky)

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/it-services/methods-and-tools/xtext
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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