Eclipse Community Forums: TMF (Xtext) » Xtend, rich strings and SEPARATOR option

Help

Home

Home » Modeling » TMF (Xtext) » Xtend, rich strings and SEPARATOR option

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

Xtend, rich strings and SEPARATOR option [message #876315]

Thu, 24 May 2012 11:05

Aran A

Messages: 30
Registered: January 2011

Member

Hello,

In a previous post I have seen this code with rich strings

toString(Entity e) '''
«e.name»
«FOR member: e.members BEFORE "(" SEPARATOR "," AFTER ")"»
«member.toString»
«ENDFOR»
'''

The result will be the members separated by commas, in parentheses. If there
are no members, there won't be parentheses.

OK, but how can I do if I have a conditional inside the FOR?, as in the example:

toString(Entity e) '''
«e.name»
«FOR member: e.members BEFORE "(" SEPARATOR "," AFTER ")"»
«IF (a condition...)»«member.toString»«ENDIF»
«ENDFOR»
'''

Then, the result could be something like: m1, , , , m5, m6, m7, , , , , , m13,
How can I do if I want a result will be m1, m5, m6, m7, m3 ? Do I have to work it by hand?

Thanks in advance,

Aran

Report message to a moderator

Re: Xtend, rich strings and SEPARATOR option [message #876379 is a reply to message #876315]

Thu, 24 May 2012 13:36

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

What about wrapping it into an extra extension using map and filter?

e.g.

toString(Entity e) '''
«e.name»
«FOR member: e.members.filter(m|a condition) BEFORE "(" SEPARATOR "," AFTER ")"»
«member.toString»
«ENDFOR»
'''

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

[Updated on: Thu, 24 May 2012 18:08]

Report message to a moderator

Previous Topic:	J2SE-1.7 Problem
Next Topic:	greedy option in xtext

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 25 03:58:36 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter