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Posted to notifications@groovy.apache.org by "Ilya Kuchmin (JIRA)" <ji...@apache.org> on 2016/03/23 21:02:26 UTC
[jira] [Created] (GROOVY-7799) Extended generic types with var args
isn't compiled if they contains in different files
Ilya Kuchmin created GROOVY-7799:
------------------------------------
Summary: Extended generic types with var args isn't compiled if they contains in different files
Key: GROOVY-7799
URL: https://issues.apache.org/jira/browse/GROOVY-7799
Project: Groovy
Issue Type: Bug
Components: Compiler
Affects Versions: 2.4.6
Environment: Oracle JRE 1.8_66
Reporter: Ilya Kuchmin
Hi
I created two files.
{code:title=A.groovy|borderStyle=solid}
package example;
interface EE {
}
interface A<T extends EE> {
A<T> method(T args)
A<T> method(T[] args)
A<T> method(Collection<T> args)
}
class AB<T extends EE> implements A<T> {
@Override
AB<T> method(T args) {
return null
}
@Override
AB<T> method(T[] args) {
return this
}
@Override
AB<T> method(Collection<T> args) {
return this
}
}
{code}
{code:title=A.groovy|borderStyle=solid}
package example;
class ABC<T extends EE> extends AB<T> {}
{code}
If you would like get bug that you should compile A.groovy and then compile ABC.groovy. For second file you should use compiled classes from file A.groovy. For second file compile throw exception:
{noformat}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
ABC.groovy: 3: Can't have an abstract method in a non-abstract class. The class 'example.ABC' must be declared abstract or the method 'example.A method(java.lang.Object[])' must be implemented.
@ line 3, column 1.
class ABC<T extends EE> extends AB<T> {}
^
1 error
{noformat}
I can remove var args methods or replace "T extends EE" on T. It is workaround for compiler. Code will be compiled.
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