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https://issues.apache.org/jira/browse/GROOVY-7970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15611543#comment-15611543
 ] 

Paul King commented on GROOVY-7970:
-----------------------------------

After applying the proposed PR#451 from GROOVY-7973 and also convincing the 
type checker to allow Class.this type expressions within closures, the 
following script works (i.e. the above suggested workaround which was showing a 
VerifyError):
{code}
@groovy.transform.CompileStatic
class Bar {
    String renderTemplate(String arg) { "dummy$arg" }
    def foo() {
        new Object() {
            String bar() {
               'B'.with{ Bar.this.renderTemplate(it) }
            }
        }
    }
}

assert new Bar().foo().bar() == 'dummyB'
{code}
I still need to work on the fix without the qualified name workaround in place.

> Can't call private method from outer class when using anonymous inner classes 
> and @CS
> -------------------------------------------------------------------------------------
>
>                 Key: GROOVY-7970
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7970
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 2.4.7
>            Reporter: Graeme Rocher
>
> This example:
> {code}
> import groovy.json.*
> import groovy.transform.*
> @CompileStatic
> class Bar {
>     private Writable renderTemplate(Object o, Map args) {
>     
>     }
>     def foo(Map map, Map arguments) {
>     
>         def writable = new Writable() {
>             @Override
>             Writer writeTo(Writer out) throws IOException {
>                 StreamingJsonBuilder builder = new StreamingJsonBuilder(out)
>                 builder.call {
>                     for(key in map.keySet()) {
>                         def o = map.get(key)
>                         Writable writable = renderTemplate((Object)o, 
> arguments)
>                         call(key.toString(), writable)
>                     }
>                 }
>                 return out
>             }
>         }
>     }
> }
> writable = new Bar().foo([one:'two'],[foo:'bar'])
> sw = new StringWriter()
> writable.writeTo(sw)
> println sw
> {code}
> Results in a compilation error:
> {code}
> [Static type checking] - Cannot find matching method 
> Bar$1#renderTemplate(java.lang.Object, java.util.Map). Please check if the 
> declared type is right and if the method exists.
>  at line: 18, column: 45
> {code}
> If you attempt to use {{Bar.this}}:
> {code}
> Writable writable = Bar.this.renderTemplate((Object)o, arguments)
> {code}
> The result is a VerifierError
> {code}
> java.lang.VerifyError: (class: Bar$1$_writeTo_closure1, method: doCall 
> signature: (Ljava/lang/Object;)Ljava/lang/Object;) Incompatible argument to 
> function
>       at Bar$1.writeTo(ConsoleScript11:15)
>       at groovy.lang.Writable$writeTo.call(Unknown Source)
>       at 
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
>       at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
>       
> {code}



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