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[xtend2.2] Semantics of "it" with "switch" [message #763162]

Fri, 09 December 2011 09:31

Klaus Birken

Messages: 4
Registered: November 2011

Junior Member

Hi,

I just upgraded to xtend 2.2 and experience the following (minor) issue.

In my xtend class, I am using the "it" special variable in combination with a switch-to-subclass expression (TBase and TSome are EMF classes and TBase is base class of TSome):

def generate(TBase it) {
   switch (it) {
      TSome:   name + " because " + purpose
      // ...
   }
}

name is an attribute of the base class TBase and works fine. purpose is an attribute of TSome, this gives an error marker Couldn't resolve reference to JvmIdentifiableElement 'purpose'. This can be fixed by explicitly using it.purpose.

I don't know what is intended here, but I guess the behavior changed from 2.1 to 2.2.

Regards,
Klaus

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Re: [xtend2.2] Semantics of "it" with "switch" [message #763245 is a reply to message #763162]

Fri, 09 December 2011 12:16

Sven Efftinge

Messages: 1823
Registered: July 2009

Senior Member

Yes, that's a know bug. But I don't think we have a bugreport yet.

Sven

Am 12/9/11 10:31 AM, schrieb Klaus Birken:
> Hi,
>
> I just upgraded to xtend 2.2 and experience the following (minor) issue.
>
> In my xtend class, I am using the "it" special variable in combination
> with a switch-to-subclass expression (TBase and TSome are EMF classes
> and TBase is base class of TSome):
>
> def generate(TBase it) {
> switch (it) {
> TSome: name + " because " + purpose
> // ...
> }
> }
>
>
> name is an attribute of the base class TBase and works fine. purpose is
> an attribute of TSome, this gives an error marker Couldn't resolve
> reference to JvmIdentifiableElement 'purpose'. This can be fixed by
> explicitly using it.purpose.
>
> I don't know what is intended here, but I guess the behavior changed
> from 2.1 to 2.2.
>
> Regards,
> Klaus
>

--
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Go to: http://xtext.itemis.com
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Re: [xtend2.2] Semantics of "it" with "switch" [message #763250 is a reply to message #763245]

Fri, 09 December 2011 12:28

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

The ticket is already here:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=365306

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

Am 09.12.11 13:16, schrieb Sven Efftinge:
> Yes, that's a know bug. But I don't think we have a bugreport yet.
>
> Sven
>
> Am 12/9/11 10:31 AM, schrieb Klaus Birken:
>> Hi,
>>
>> I just upgraded to xtend 2.2 and experience the following (minor) issue.
>>
>> In my xtend class, I am using the "it" special variable in combination
>> with a switch-to-subclass expression (TBase and TSome are EMF classes
>> and TBase is base class of TSome):
>>
>> def generate(TBase it) {
>> switch (it) {
>> TSome: name + " because " + purpose
>> // ...
>> }
>> }
>>
>>
>> name is an attribute of the base class TBase and works fine. purpose is
>> an attribute of TSome, this gives an error marker Couldn't resolve
>> reference to JvmIdentifiableElement 'purpose'. This can be fixed by
>> explicitly using it.purpose.
>>
>> I don't know what is intended here, but I guess the behavior changed
>> from 2.1 to 2.2.
>>
>> Regards,
>> Klaus
>>
>
>

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