Eclipse Community Forums: TMF (Xtext) » Get token list for an EObject

Help

Home

Home » Modeling » TMF (Xtext) » Get token list for an EObject

Show: Today's Messages :: Show Polls :: Message Navigator

Get token list for an EObject [message #795263]

Fri, 10 February 2012 09:06

John J. Camilleri

Messages: 33
Registered: November 2011
Location: Göteborg

Member

Simple question but can't find an answer for it..

If I have an EObject, how do I get a String representation of all the source tokens that it covers?

Report message to a moderator

Re: Get token list for an EObject [message #795274 is a reply to message #795263]

Fri, 10 February 2012 09:21

John J. Camilleri

Messages: 33
Registered: November 2011
Location: Göteborg

Member

Ok, I have found this way of doing it which seems to work:

@Inject
protected Serializer serializer;
	
protected String getTokens(EObject eobj) {
	return serializer.serialize(eobj);
}

However I am warned by Eclipse that accessing the serializer is discouraged. Is there a better way to do this?

[Updated on: Fri, 10 February 2012 09:21]

Report message to a moderator

Re: Get token list for an EObject [message #795391 is a reply to message #795263]

Fri, 10 February 2012 12:23

Lorenzo Bettini

Messages: 1812
Registered: July 2009
Location: Firenze, Italy

Senior Member

On 02/10/2012 10:06 AM, John J. Camilleri wrote:
> Simple question but can't find an answer for it..
>
> If I have an EObject, how do I get a String representation of all the
> source tokens that it covers?

public String getProgramText(EObject object) {
final ICompositeNode node = NodeModelUtils.getNode(object);
if (node == null)
return null;
return NodeModelUtils.getTokenText(node);
}

hope this helps
Lorenzo

--
Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
ICQ# lbetto, 16080134 (GNU/Linux User # 158233)
HOME: http://www.lorenzobettini.it MUSIC: http://www.purplesucker.com
http://www.myspace.com/supertrouperabba
BLOGS: http://tronprog.blogspot.com http://longlivemusic.blogspot.com
http://www.gnu.org/software/src-highlite
http://www.gnu.org/software/gengetopt
http://www.gnu.org/software/gengen http://doublecpp.sourceforge.net

HOME: http://www.lorenzobettini.it
TDD Book: https://leanpub.com/tdd-buildautomation-ci
Xtext Book: https://www.packtpub.com/application-development/implementing-domain-specific-languages-xtext-and-xtend-second-edition

Report message to a moderator

Re: Get token list for an EObject [message #795400 is a reply to message #795263]

Fri, 10 February 2012 12:39

Henrik Lindberg

Messages: 2509
Registered: July 2009

Senior Member

NodeModelUtils.getNode(eObj).getText()

and beweare of nulls...

- henrik

On 2012-10-02 10:06, John J. Camilleri wrote:
> Simple question but can't find an answer for it..
>
> If I have an EObject, how do I get a String representation of all the
> source tokens that it covers?

Report message to a moderator

Re: Get token list for an EObject [message #795463 is a reply to message #795391]

Fri, 10 February 2012 13:48

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Lorenzo, Henrik, et.al.

as the java doc suggests, you should have a look at
NodeModelUtils#findActualNodeFor(EObject) which is almost always the one
that you want to use.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 10.02.12 13:23, schrieb Lorenzo Bettini:
> On 02/10/2012 10:06 AM, John J. Camilleri wrote:
>> Simple question but can't find an answer for it..
>>
>> If I have an EObject, how do I get a String representation of all the
>> source tokens that it covers?
>
> public String getProgramText(EObject object) {
> final ICompositeNode node = NodeModelUtils.getNode(object);
> if (node == null)
> return null;
> return NodeModelUtils.getTokenText(node);
> }
>
> hope this helps
> Lorenzo
>

Report message to a moderator

Re: Get token list for an EObject [message #795495 is a reply to message #795463]

Fri, 10 February 2012 14:35

John J. Camilleri

Messages: 33
Registered: November 2011
Location: Göteborg

Member

Fantastic, thank you guys.
Here's the final & formatted version of the code for anyone else who may search for this:

final ICompositeNode node = NodeModelUtils.findActualNodeFor(eobj);		
if (node != null) {
    return NodeModelUtils.getTokenText(node);
}

Report message to a moderator

Previous Topic:	[Xtext 2.2] Using syntactic predicates within multi-cardinality constructs
Next Topic:	How to modify Xtext resources programmatically

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 25 17:54:39 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter