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https://issues.apache.org/jira/browse/GROOVY-8820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16659149#comment-16659149
]
Frederico Costa Galvão commented on GROOVY-8820:
------------------------------------------------
Can be reproduced with as little code as:
{code:groovy}
trait Bacon {
def what() {
String[] l = []
l.with {
length
}
}
}
class B implements Bacon {}
new B().what()
{code}
Changing `trait` with `class` and `implements` with `extends` makes the code
run properly.
> 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
> Priority: Major
>
> 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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