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https://issues.apache.org/jira/browse/GROOVY-7003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pascal Schumacher updated GROOVY-7003:
--------------------------------------
Affects Version/s: (was: 2.4.0-rc-1)
2.4.5
> Cannot assign closure to property of functional interface type
> --------------------------------------------------------------
>
> Key: GROOVY-7003
> URL: https://issues.apache.org/jira/browse/GROOVY-7003
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Affects Versions: 2.3.6, 2.4.5
> Reporter: Mauro Molinari
> Assignee: Cédric Champeau
>
> I don't know if this is on purpose, but I can't understand why it should be.
> The following passes the static type checking right:
> {code}
> package test
> import java.beans.PropertyChangeEvent;
> import java.beans.PropertyChangeListener;
> import javax.swing.JFrame;
> import groovy.transform.CompileStatic;
> @CompileStatic
> class TestCompileStatic {
> static final void main(String[] args) {
> JFrame frame = new JFrame()
> frame.name = 'foo'
> PropertyChangeListener listener = { PropertyChangeEvent event ->
> println "Name changed: ${event.oldValue} ->
> ${event.newValue}"
> }
> frame.addPropertyChangeListener('name', listener)
> frame.name = 'bar'
> }
> }
> {code}
> The following does not:
> {code}
> package test
> import java.beans.PropertyChangeEvent;
> import java.beans.PropertyChangeListener;
> import javax.swing.JFrame;
> import groovy.transform.CompileStatic;
> @CompileStatic
> class TestCompileStatic2 {
> static PropertyChangeListener listener = { PropertyChangeEvent event ->
> println "Name changed: ${event.oldValue} -> ${event.newValue}"
> }
>
> static final void main(String[] args) {
> JFrame frame = new JFrame()
> frame.name = 'foo'
>
> frame.addPropertyChangeListener('name', listener)
> frame.name = 'bar'
> }
> }
> {code}
> The error is:
> {noformat}
> C:\ws\44\DCS-shop-trunk\TestGroovy\src\main\groovy\test\TestCompileStatic.groovy:
> 13: [Static type checking] - Cannot assign value of type groovy.lang.Closure
> <
> java.lang.Void> to variable of type java.beans.PropertyChangeListener
> @ line 13, column 43.
> ertyChangeListener listener = { Property
> {noformat}
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