[jira] [Resolved] (GROOVY-9597) CompileStatic: @ClosureParams in @DelegatesTo doesn't work

["Daniel Sun (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-9597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Sun resolved GROOVY-9597.
--------------------------------
    Fix Version/s: 3.0.5
                   4.0.0-alpha-1
       Resolution: Fixed

> CompileStatic: @ClosureParams in @DelegatesTo doesn't work
> ----------------------------------------------------------
>
>                 Key: GROOVY-9597
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9597
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>    Affects Versions: 3.0.4
>         Environment: Tested in GroovyConsole 3.0.4
>            Reporter: Felix Scheinost
>            Assignee: Eric Milles
>            Priority: Minor
>             Fix For: 4.0.0-alpha-1, 3.0.5
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> This code doesn't compile with this error:
> {noformat}
> [Static type checking] - Cannot find matching method java.lang.Object#toBigDecimal(). Please check if the declared type is correct and if the method exists.{noformat}
> Explicitly adding a `delegate.someFunctionName` works around the problem.
> {code:groovy}
> import groovy.transform.CompileStatic
> import groovy.transform.stc.ClosureParams
> import groovy.transform.stc.FirstParam
> import groovy.transform.stc.FromString
> @CompileStatic
> class Delegate {
>   def <T2> void someFunctionName(Collection<T2> values, @ClosureParams(FirstParam.FirstGenericType) Closure<String> optionKey) {
>   }
>   static Delegate of(@DelegatesTo(Delegate) Closure c) {
>     def d = new Delegate()
>     c.delegate = d
>     c()
>     return d
>   }
> }
> @CompileStatic
> class App {
>   List<Integer> someList
>   Delegate datePicker = Delegate.of {
>     someFunctionName(
>       this.someList,
>       // Here: Cannot find matching method java.lang.Object#toBigDecimal(). Please check if the declared type is correct and if the method exists.
>       // But it should be known to be Integer
>       // The code compiles when delegate.someFunctionName is used above
>       { it.toBigDecimal().toString() },
>     )
>   }
> }
> new App()
> {code}
>  



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