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Keep the Grammar structure same as before saving the file [message #1806731]

Tue, 14 May 2019 13:21

Nagashree KN

Messages: 32
Registered: September 2018

Member

Hi,

I am facing problem in the Structure of the Grammar. on saving the xtext editor (runtime) , Grammar format is changing. it is displaying the grammar in 1 line. How i can retain the grammar structure same ,before and after saving the file.
My grammar is given below-

grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.common.Terminals

import "http://www.eclipse.org/sirius/sample/basicfamily"
import "http://www.eclipse.org/emf/2002/Ecore" as ecore

Family returns Family:
{Family}
'Family{'
name=EString
('members{' members+=Person ( "," members+=Person)* '}' )?
'}';

Person returns Person:
Man | Woman;

EString returns ecore::EString:
STRING | ID;

Man returns Man:
{Man}
'Man{'
name=EString
('children{' children+=[Person|EString] ( "," children+=
[Person|EString])* '}' )?
('parents{' parents+=[Person|EString] ( "," parents+=
[Person|EString])* '}' )?
'}';

Woman returns Woman:
{Woman}
'Woman{'
name=EString
('children{' children+=[Person|EString] ( "," children+=
[Person|EString])* '}' )?
('parents{' parents+=[Person|EString] ( "," parents+=
[Person|EString])* '}' )?
'}';
And i have attached some screenshots.

Please help i how to solve.

Attachment: GrammarBeforeSave.PNG
(Size: 4.54KB, Downloaded 69 times)
Attachment: GrammarAfterSave.PNG
(Size: 2.77KB, Downloaded 72 times)

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Re: Keep the Grammar structure same as before saving the file [message #1819672 is a reply to message #1806731]

Tue, 21 January 2020 04:13

Naveen R

Messages: 7
Registered: May 2019

Junior Member

Hi,
From Xtext 2.8 extend the new formatter2 class org.eclipse.xtext.formatting2 .
Refer the blog - https://blogs.itemis.com/en/tabular-formatting-with-the-new-formatter-api

Before Xtext 2.8 extend the formatter class org.eclipse.xtext.formatting.impl.AbstractDeclarativeFormatter
Refer - https://github.com/mn-mikke/Model-driven-Pretty-Printer-for-Xtext-Framework/wiki/Standard-Way-of-Code-Formatting-in-Xtext-Framework

Using the above classes the formatting of the DSL can be controlled.

Regards,
Naveen

[Updated on: Tue, 21 January 2020 04:16]

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Re: Keep the Grammar structure same as before saving the file [message #1821336 is a reply to message #1819672]

Tue, 11 February 2020 04:49

Nagashree KN

Messages: 32
Registered: September 2018

Member

Thank you Naveen :)

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