Does anyone know how to configure IntelliJ Idea wi...

# announcements

[Joeywp]

Does anyone know how to configure IntelliJ Idea with Kotlin external annotations? If I use an external @Deprecated annotation the IDE picks it up correctly, but when I annotate it with @Nullable (from org.jetbrains.annotations.Nullable) the IDE just ignores it's nullability?

Edit: It's for an external library, that's why I have to use the external annotations

[Shawn]

is this external library written in Kotlin or written in Java?

[Joeywp]

It's written in Java (it's actually the Minecraft Spigot server)

Example annotations:

<root>
    <item name='org.bukkit.inventory.PlayerInventory org.bukkit.inventory.ItemStack getItemInMainHand()'>
        <annotation name='org.jetbrains.annotations.Nullable'/>
        <annotation name='java.lang.Deprecated'/>
    </item>
</root>

[Joeywp]

https://i.gyazo.com/a4c7b37b69acc8b238ac1c3f420fbcc2.png▾

As this image shows, the Deprecated one is picked up by the IDE, but the Nullable isn't for some reason

In the editor however, both do actually show up:

https://i.gyazo.com/393e04abc624a58ad6a0479d7b40d590.png▾

[Shawn]

the call route looks a little different here - it may be that using . directly on the result of itemInMainHand might be accidentally casting the object from ItemStack! to ItemStack rather than ItemStack?

[Shawn]

the result of .clone() on a non-null, cloneable object should result in a non-null reference being returned

[Joeywp]

Oh I picked a bit of a wrong example, it also does this on none .clone() methods, for example:

https://i.gyazo.com/fb8bc996f8c05da25b256ed210249ba6.png▾

Also, the .inventory refers to an interface that only has methods, CTRL+Clicking the method confirms it refers to the externally annotated method

[Joeywp]

If it where to refer to the wrong element, I assume the @Deprecated also shouldn't work, right?

[Shawn]

hmm that’s a good question

[Shawn]

I’m not sure if appending @Nullable via external annotations overrides Kotlin’s concept of platform types here

[Shawn]

may or may not be worth filing a youtrack ?

[Joeywp]

Yeah I indeed assumed the same, guess I'll indeed just try a youtrack issue

[Shawn]

is there any chance that method is actually marked as deprecated by the library authors?

[Shawn]

I don’t have the source or reference in front of me to check 😅

[Joeywp]

Nope, if I remove the @Deprecated from the external annotations it dissapears again

[Joeywp]

Just used the @Deprecated to test if I configured it wrongly or if it did ignore my @Nullable

[Shawn]

I see

[Joeywp]

Created the issue:
https://youtrack.jetbrains.com/issue/IDEA-191434