[jira] [Resolved] (GROOVY-8820) Closure inside trait cannot use Closure's delegate variables

["Eric Milles (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-8820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles resolved GROOVY-8820.
---------------------------------
    Fix Version/s: 3.0.6
                   4.0.0-alpha-1
       Resolution: Fixed

> Closure inside trait cannot use Closure's delegate variables
> ------------------------------------------------------------
>
>                 Key: GROOVY-8820
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8820
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 2.4.15, 3.0.0-alpha-3, 2.5.2
>         Environment: Groovy Version: 3.0.0-alpha-3 JVM: 1.8.0_171 Vendor: Oracle Corporation OS: Mac OS X
>            Reporter: Renato Athaydes
>            Assignee: Eric Milles
>            Priority: Major
>             Fix For: 4.0.0-alpha-1, 3.0.6
>
>
> The following code throws an error at runtime:
>  
> {code:java}
> trait T {
>     def doIt() {
>         return {
>             n = 1
>         }
>     }
> }
> class Delegate {
>     int n
> }
>     
> class Tish implements T {
>     def go() {
>         def closure = doIt()
>         def d = new Delegate()
>         closure.delegate = d
>         closure()
>         assert d.n == 1
>         println "All good!"
>     }
> }
> new Tish().go(){code}
>  
> This is the error I see on Groovy 3.0.0-alpha-3 (same as previous versions):
>  
> {code:java}
> groovy.lang.MissingPropertyException: No such property: n for class: Tish{code}
>  
> This is expected to work because, outside of traits, it does: this runs successfully:
>  
> {code:java}
> class T {
>     def doIt() {
>         return {
>             n = 1
>         }
>     }
> }
> class Delegate {
>     int n
> }
>     
> class Tisha extends T {
>     def go() {
>         def closure = doIt()
>         def d = new Delegate()
>         closure.delegate = d
>         closure()
>         assert d.n == 1
>         println "All good!"
>     }
> }
> new Tisha().go(){code}
>  



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