Eclipse Community Forums: TMF (Xtext) » Xtext Grammar generates extera white space

Help

Home

Home » Modeling » TMF (Xtext) » Xtext Grammar generates extera white space

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

Xtext Grammar generates extera white space [message #1715863]

Thu, 26 November 2015 18:01

Saeed Tajfar

Messages: 5
Registered: September 2015

Junior Member

Hello everyone!!

I have a Xtext grammar that is generated form an existing ecore file. Here is part of the grammar:

Template returns Template :
'{'
id=ID0 ':' (name=String0)?
'{'
some grammar rules here...
'}'
'}'

Right now, grammar generates this output:
{
ID_VALUE : NAME_VALE
{
}
}

But the expected output is ( both ID and Name values should be surrounded by double quotations,Without any extra White Space ):
I need the grammar to create as output:
{
"ID_VALUE" : "NAME_VALUE"
{
}
}

MY Problem is that if I add the double quotations to the grammar, then it will creates Extra WHITE spaces before and after double quotations; for instance " ID_VALUE " : " NAME_VALUE "

{
" ID_VALUE " : " NAME_VALUE "
{
}
}

Which makes my output invalid!!

Any idea to add double quotations without white spaces?

Thanks in advanced.

Report message to a moderator

Re: Xtext Grammar generates extera white space [message #1715864 is a reply to message #1715863]

Thu, 26 November 2015 18:35

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

I am not sure if i get your question. Do you try to serialize a model using xtext?
You may try id=STRING ':' name=STRING

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

[Updated on: Thu, 26 November 2015 18:36]

Report message to a moderator

Re: Xtext Grammar generates extera white space [message #1715868 is a reply to message #1715864]

Thu, 26 November 2015 19:31

Saeed Tajfar

Messages: 5
Registered: September 2015

Junior Member

Perfect, Works!

yes, what I am doing is to convert an XMI model of my Ecore metamodel to obtain a json file as output by running the grammar is standalone mode.

the Xtext project type is: "xtext project from existing ecore models".

I forgot to say that string0 and ID are defined as following inside the grammar:

ID0 returns type::ID:
'ID' /* TODO: implement this rule and an appropriate IValueConverter */;

String0 returns type::String :
'String' /* TODO: implement this rule and an appropriate IValueConverter */;

[Updated on: Thu, 26 November 2015 19:43]

Report message to a moderator

Previous Topic:	Out of memory Xtext RC1 (IDEA)
Next Topic:	Xtext build with maven and mixed Xtend/Java projects

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 25 12:09:27 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter