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Posted to notifications@groovy.apache.org by "Paul King (Jira)" <ji...@apache.org> on 2023/02/10 21:41:00 UTC

[jira] [Closed] (GROOVY-10791) STC doesn't find method reference on superclass

     [ https://issues.apache.org/jira/browse/GROOVY-10791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King closed GROOVY-10791.
------------------------------

> STC doesn't find method reference on superclass
> -----------------------------------------------
>
>                 Key: GROOVY-10791
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10791
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>    Affects Versions: 4.0.6
>            Reporter: Christopher Smith
>            Assignee: Eric Milles
>            Priority: Major
>              Labels: default-methods
>             Fix For: 3.0.14, 4.0.7
>
>
> Java permits method references to specify a subclass in {{ContainingType}}, but the STC produces an error unless the exact declaring type is supplied.
> {code:groovy}
> @Grab('io.vavr:vavr:0.10.4')
> import io.vavr.control.Option
> Option<String> supply() { Option.of('hello') }
> @groovy.transform.CompileStatic
> void test() {
>   println supply().map(Option::toTry)
>   //                   ^ declared on Value
> }
> test()
> {code}
> produces
> {code}
> Failed to find the expected method[toTry(java.lang.String)] in the type[io.vavr.control.Option] @ line 8, column 24.
>      println supply().map(Option::toTry)
> {code}
> (which also suggests that the STC, not traversing supertypes to find a {{::toTry}}, has misinferred the signature).



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