@Cleanup support

[maxvader]

Hello, I see that this annotation is not in the supported list.
Do you plan to support it?

At the moment it can generate fake errors in the IDE for code like this:
try { @Cleanup InputStream profileIs = Thread.currentThread().getContextClassLoader().getResourceAsStream(PROFILE_CONTEXT); } catch (IOException e) { throw new CustomException(e); }

This code is correct and Eclipse accepts it, Intellij says that the IOException is never thrown but is not correct, is thrown by InputStream.close().
(I know that in this specific case AutoClosable should be used, but it's not always possible).

[sirgl]

Hello! We added extension point(com.intellij.codeInspection.resources.ImplicitResourceCloser) to support such scenario in Intellij Idea. It will be in 2018.1.

[mplushnikov]

Hello @sirgl ,
thank you for providing of new extension point! Just implemented it in plugin.

Unfortunately it will not fix current issue, because it's something else. Here I need some extension point to give IntelliJ a hint, that some line of code will actually produce an exception.
It's because @cleanup will generate try/finally block internally and call resource.close() in it. Which one will produce not catched IOException.

Code example:

import lombok.Cleanup;

import java.io.IOException;
import java.io.InputStream;

public class Main {

    public static void main(String[] args) {
        try {
            @Cleanup InputStream profile = Thread.currentThread().getContextClassLoader().getResourceAsStream("/someFile");
            System.out.println(profile);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

Code after lombok processing:

import java.io.IOException;
import java.io.InputStream;

public class Main {

    public static void main(String[] args) {
        try {
            InputStream profile = Thread.currentThread().getContextClassLoader().getResourceAsStream("/someFile");
            try {
                profile.getClass();
            } finally {
                if (java.util.Collections.singletonList(profile).get(0) != null) {
                    profile.close();
                }
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

Do you have some suggestions, how to make it working? Or can you provide some additional extension points?