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Posted to notifications@groovy.apache.org by "Paul King (JIRA)" <ji...@apache.org> on 2017/02/19 21:26:44 UTC

[jira] [Updated] (GROOVY-7996) Using with method with a closure that references a protected property produces ClassCastException

     [ https://issues.apache.org/jira/browse/GROOVY-7996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King updated GROOVY-7996:
------------------------------
    Description: 
The following example:

{code}
class Foo {
    Object propertyMissing(String name) {
         return "stuff"
    }
    
    void build(Closure callable) {
         this.with(callable)
    }
}

@groovy.transform.CompileStatic
class Bar {
    protected List bar = []
    
    boolean doStuff() {
        Foo foo = new Foo()
        foo.build {
           return bar.isEmpty() 
        }
    }
}

new Bar().doStuff()
{code}

Produces 

{code}
java.lang.ClassCastException: java.lang.String cannot be cast to java.util.List
	at Bar$_doStuff_closure1.doCall(ConsoleScript3:19)
	at Bar$_doStuff_closure1.call(ConsoleScript3)
	at org.codehaus.groovy.runtime.DefaultGroovyMethods.with(DefaultGroovyMethods.java:242)
	at Bar.doStuff(ConsoleScript3:18)
	at Ba
{code}

The equivalent code without CompileStatic prints:

{code}
Result: false
{code}

The behaviour of both should be he same IMO

  was:
The following example:

{code}

class Foo {
    Object propertyMissing(String name) {
         return "stuff"
    }
    
    void build(Closure callable) {
         this.with(callable)
    }
}

@groovy.transform.CompileStatic
class Bar {
    protected List bar = []
    
    boolean doStuff() {
        Foo foo = new Foo()
        foo.build {
           return bar.isEmpty() 
        }
    }
}

new Bar().doStuff()
{code}

Produces 

{code}
java.lang.ClassCastException: java.lang.String cannot be cast to java.util.List
	at Bar$_doStuff_closure1.doCall(ConsoleScript3:19)
	at Bar$_doStuff_closure1.call(ConsoleScript3)
	at org.codehaus.groovy.runtime.DefaultGroovyMethods.with(DefaultGroovyMethods.java:242)
	at Bar.doStuff(ConsoleScript3:18)
	at Ba
{code}

The equivalent code without CompileStatic prints:

{code}
Result: false
{code}

The behaviour of both should be he same IMO


> Using with method with a closure that references a protected property produces ClassCastException
> -------------------------------------------------------------------------------------------------
>
>                 Key: GROOVY-7996
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7996
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 2.4.7
>            Reporter: Graeme Rocher
>
> The following example:
> {code}
> class Foo {
>     Object propertyMissing(String name) {
>          return "stuff"
>     }
>     
>     void build(Closure callable) {
>          this.with(callable)
>     }
> }
> @groovy.transform.CompileStatic
> class Bar {
>     protected List bar = []
>     
>     boolean doStuff() {
>         Foo foo = new Foo()
>         foo.build {
>            return bar.isEmpty() 
>         }
>     }
> }
> new Bar().doStuff()
> {code}
> Produces 
> {code}
> java.lang.ClassCastException: java.lang.String cannot be cast to java.util.List
> 	at Bar$_doStuff_closure1.doCall(ConsoleScript3:19)
> 	at Bar$_doStuff_closure1.call(ConsoleScript3)
> 	at org.codehaus.groovy.runtime.DefaultGroovyMethods.with(DefaultGroovyMethods.java:242)
> 	at Bar.doStuff(ConsoleScript3:18)
> 	at Ba
> {code}
> The equivalent code without CompileStatic prints:
> {code}
> Result: false
> {code}
> The behaviour of both should be he same IMO



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