[jira] [Closed] (GROOVY-8434) ClassCastException: Class cannot be cast to type-of-with's-delegate

["Paul King (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-8434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King closed GROOVY-8434.
-----------------------------
    Resolution: Duplicate

I believe this is a duplicate of GROOVY-8873.

> ClassCastException: Class cannot be cast to type-of-with's-delegate
> -------------------------------------------------------------------
>
>                 Key: GROOVY-8434
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8434
>             Project: Groovy
>          Issue Type: Bug
>          Components: Compiler
>    Affects Versions: 2.4.12
>         Environment: Windows 10, Gradle 4.2.1
>            Reporter: Robert Papp
>            Priority: Major
>
> I'm sorry for the hard repro, but I couldn't figure it out with a smaller one.
> 1. https://github.com/TWiStErRob/net.twisterrob.gradle.quality/tree/groovy-cast-bug
> 2. {{gradlew test}} (if you're lucky it runs and fails, otherwise don't fret there's an other way)
> Test fails:
> {code}
> Caused by: java.lang.ClassCastException: java.lang.Class cannot be cast to org.gradle.api.reporting.ConfigurableReport
> 	at net.twisterrob.gradle.checkstyle.CheckStyleTask$TaskConfig$_setupReports_closure2$_closure3.doCall(CheckStyleTask.groovy:95)
> 	at net.twisterrob.gradle.checkstyle.CheckStyleTask$TaskConfig$_setupReports_closure2$_closure3.call(CheckStyleTask.groovy)
> 	at net.twisterrob.gradle.checkstyle.CheckStyleTask$TaskConfig$_setupReports_closure2.doCall(CheckStyleTask.groovy:94)
> 	at net.twisterrob.gradle.checkstyle.CheckStyleTask$TaskConfig$_setupReports_closure2.call(CheckStyleTask.groovy)
> 	at net.twisterrob.gradle.checkstyle.CheckStyleTask$TaskConfig.setupReports(CheckStyleTask.groovy:91)
> 	at net.twisterrob.gradle.checkstyle.CheckStyleTask$TaskConfig.execute(CheckStyleTask.groovy:42)
> 	at net.twisterrob.gradle.checkstyle.CheckStyleTask$TaskConfig.execute(CheckStyleTask.groovy)
> 	at org.gradle.api.internal.tasks.DefaultTaskContainer.create(DefaultTaskContainer.java:148)
> {code}
> Now, that's obviously not my error, because 1) it worked in the previous commit (when the class wasn't an inner class) and 2) I'm using {{ast(groovy.transform.CompileStatic)}} to build.
> Another way: {{gradlew groovyCompile}}, and then observe the build directory:
> {code}
> static def setupReports(CheckStyleTask task) {
> 	task.reports.with {
> 		def reportsDir = task.project.extensions.findByType(ReportingExtension).baseDir
> 		xml.with {
> 			enabled = true
> 			setDestination(new File(reportsDir, 'checkstyle.xml'))
> {code}
> compiles to
> {code}
> public Object doCall(Object it) {
>                             boolean var2 = true;
>                             ((ConfigurableReport)CheckStyleTask.class).setEnabled(var2);
>                             Object var10001 = null;
>                             ((ConfigurableReport)((_closure4)this).getDelegate()).setDestination(new File((File)ScriptBytecodeAdapter.castToType(this.reportsDir.get(), File.class), "checkstyle.html"));
>                             Object var10000 = null;
> {code}
> Note: the first cast is wrong, the second one is using getDelegate properly.



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