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

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

    [ https://issues.apache.org/jira/browse/GROOVY-9597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17150603#comment-17150603 ] 

Eric Milles commented on GROOVY-9597:
-------------------------------------

Here is a smaller example:
{code:groovy}
import groovy.transform.*
import groovy.transform.stc.*

@CompileStatic
class Help9597 {
  def <T> void proc(Collection<T> values, @ClosureParams(FirstParam.FirstGenericType) Closure<String> block) {
  }
}

@CompileStatic
class Main9597 {
  List<Integer> list
  void test(Help9597 h) {
    h.proc(this.list) { it.toBigDecimal().toString() } // works
    h.with {
      proc(this.list) { it.toBigDecimal().toString() } // error
    }
  }
}
{code}


> 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 compilation
>    Affects Versions: 3.0.4
>         Environment: Tested in GroovyConsole 3.0.4
>            Reporter: Felix Scheinost
>            Assignee: Eric Milles
>            Priority: Minor
>
> 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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