Eclipse Community Forums: TMF (Xtext)

Home

Home » Modeling » TMF (Xtext) » Formatting conflict

Formatting conflict [message #1868439]

Fri, 19 July 2024 09:07

Eclipse User

I'm a bit puzzled by a

ConflictingFormattingException

while implementing formatting using Xtext 2.34.0:

!MESSAGE org.eclipse.xtext.util.ExceptionAcceptor - Conflicting Regions.
{{{}}}: newLine=2 at offset=286 length=1
[[[]]]: newLine=1-1-2 at offset=286 length=1

My interpretation is that the first region requires 2 new lines while the following region requires at least 1 new line but 2 new lines is the maximum. In this sense, placing 2 new lines between these regions would be the solution, right? Indeed, this is my intention.
So why is this exception thrown?

As can be seen, the first region has

append[setNewLine(2)]

while the following region has

prepend[setNewLines(1, 1, 2)]

Regards,
Ralph

Re: Formatting conflict [message #1868442 is a reply to message #1868439]

Fri, 19 July 2024 09:22

Eclipse User

as i have no idea can you provide a minimum reproducer?

Re: Formatting conflict [message #1868445 is a reply to message #1868442]

Fri, 19 July 2024 09:41

Eclipse User

(org.eclipse.xtext.formatting2.ConflictingFormattingException) org.eclipse.xtext.formatting2.ConflictingFormattingException: Conflicting values for 'newLineMin': '2' and '1'.

cannot tell you what the design considerations are for that

Re: Formatting conflict [message #1868448 is a reply to message #1868445]

Fri, 19 July 2024 11:04

Eclipse User

I can reproduce the issue in the Entities example from Bettini' book.
In the EntitiesFormatter.xtend file, just add a

prepend[newLine]

to the attribute at line 44:

 attribute.prepend[newLine].append[setNewLines(1, 1, 2)]

Three following sample.entities code will reproduce the exception:

entity MyFirstEntity {
    string s;
    int a;
}

[Updated on: Fri, 19 July 2024 11:10] by Moderator

Re: Formatting conflict [message #1868451 is a reply to message #1868448]

Fri, 19 July 2024 12:24

Eclipse User

maybe you can workaround this using
some conditionally formatting.

if (! a after b) b.prepend ....

or if (a after b) set 2 to both otherwise ...

[Updated on: Fri, 19 July 2024 12:25] by Moderator

Re: Formatting conflict [message #1868457 is a reply to message #1868451]

Fri, 19 July 2024 14:16

Eclipse User

You're right, of course I can find a workaround but in this case I think it might be a bug that needs to be reported.
I didn't look at the source code yet because I don't have time at the moment... unfortunately.

Re: Formatting conflict [message #1868616 is a reply to message #1868457]

Fri, 19 July 2024 23:38

Eclipse User

Looking at the code the behavior looks intentional.
But I cannot tell you the design considerations

Previous Topic:	Xtend java source version configuration (maven)
Next Topic:	Xtext 2.36.0.M3 is out

Goto Forum:

-=] Back to Top [=-

Current Time: Fri Mar 21 13:51:38 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter