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beginner question about outline and label [message #696170]

Wed, 13 July 2011 12:21

alex.ren2006

Messages: 46
Registered: June 2011

Member

I am currently working on building an IDE for ATS (www.ats-lang.org). I have a simple question about building Outline and label in Xtext. Any suggestion is highly appreciated. For clarity, the following is an example grammar.

=======================

grammar org.Test1 with org.eclipse.xtext.common.Terminals

generate test1 "http://www.Test1.org"

program:
	m1=ent1
	m2=ent2
;

ent1:
	m=ab
;

ent2:
	m=cd
;

ab:
	'a'|'b'
;

cd:
	'c'|'d'
;

=======================

I want to show all the information of m1 and m2 in the label of program. My first idea is to add a "tostring" method to all of those class (program, ent1, ent2, etc.). But they are generated by Xtext. The following is what I am doing now.

=======================

	String text(program ele) {
		return "program " + ele.getM1().getM() + " " + ele.getM2().getM();
	}

========================

The method seems a little bit tedious. What's the usual way to get all the information of a semantic element? Does Xtext support converting a semantic element back to the string?

Thanks a lot.

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Re: beginner question about outline and label [message #696228 is a reply to message #696170]

Wed, 13 July 2011 14:28

Alexander Nittka

Messages: 1193
Registered: July 2009

Senior Member

Hi,

This is the way to go. How should Xtext know, what the relevant information is? I won't suggest serialising the object as that is as stupid as it can get as an outline label.

Alex

Need training, onsite consulting or any other kind of help for Xtext?
Go visit http://xtext.itemis.com or send a mail to xtext@itemis.de

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