Using error-types in annotation processors

[Victor Nazarov]

Jonathan,

thank you for your reply. Can I personally file this bug? It seems that I
have no access to https://bugs.openjdk.java.net/ . Is there a way I can
somehow track this bug status?

--
Victor Nazarov

On Tue, Dec 1, 2015 at 12:43 AM, Jonathan Gibbons <
jonathan.gibbons at oracle.com> wrote:

> cc: compiler-dev
> bcc: anno-pipeline-dev
>
> That being said, it seems like this is a bug/rfe that should be filed and
> fixed.
>
> -- Jon
>
>
>
> On 11/27/2015 05:36 AM, Victor Nazarov wrote:
>
>> Hello,
>>
>> I hope that this is an appropriate place to write my question.
>>
>> To add some context, I'm a developer of [adt4j](
>> https://github.com/sviperll/adt4j) project.
>>
>> Java compiler pass every reference to unknown classes as an "error" type.
>> But it can be useful to inspect such error-types in annotation processor
>> to
>> actually generate missing classes. This somewhat works in latest JDK8, but
>> not in the special case interesting for adt4j project.
>>
>> The way to inspect error type is to use methods provided by
>> ErrorType-class. There are only two interesting ways to inspect error
>> type:
>>
>> errorType.asElement().getSimpleName() --- to get the name of missing class
>> errorType.getTypeArguments() --- to get type-arguments applied to
>> type-to-be.
>>
>> The problem is that sometimes these methods provide no useful information.
>> In such situation getSimpleName method returns useless "<any>" string and
>> no feather processing is possible.
>>
>> Suppose that we want to generate class MyClassToGenerate and it is
>> currently missing. Below are some code snippets. With Example1, Example2
>> and Example3 error-type processing works as expected. Example4 doesn't
>> work
>> as expected and always returns "<any>" string. This looks inconsistent and
>> I'd be glad if it can be fixed in future versions of Java...
>>
>> Example1
>> --------------
>>      class MyClass extends MyClassToGenerate {
>>      }
>>
>> Example2
>> --------------
>>      class MyClass extends MyClassToGenerate<T> {
>>      }
>>
>> Example3
>> --------------
>>      class MyClass {
>>          void method1(MyClassToGenerate argument) {
>>          }
>>      }
>>
>> Example4
>> --------------
>>      class MyClass {
>>          void method1(MyClassToGenerate<T> argument) {
>>          }
>>      }
>>
>> --
>> Victor Nazarov
>>
>
>
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