This is what I got with the PSI approach:

# arrow-meta

[Imran/Malic]

This is what I got with the PSI approach:

[Imran/Malic]

For an general reference you can check out this DevGuide.
It is not very good, but all we got about the theoretical part. https://www.jetbrains.org/intellij/sdk/docs/basics/architectural_overview/psi_files.html

[AdrianRaFo]

This is all the info we need to get from the `PsiElement`https://github.com/arrow-kt/arrow/blob/master/modules/meta/arrow-meta/src/main/java/arrow/meta/ast/ast.kt#L233
This is a MPP project using Psi https://github.com/square/sqldelight
and this is the Psi native library that sqdelight use under the hood https://github.com/AlecStrong/sqlite-psi

[Imran/Malic]

My current workflow is to search through the IntelliJ Platform support and try to find gold examples.
One for (virtual) PSI generation in PHP
https://intellij-support.jetbrains.com/hc/en-us/community/posts/360002038299-Add-element-to-PSI?flash_digest=abd9f102af43a4eeae9145715b3188a8a94222bb

This plugin seems to work for most PSI dev’s, but I am still working on how the PSI System works.
https://plugins.jetbrains.com/plugin/227-psiviewer

[AdrianRaFo]

ok

[Imran/Malic]

Update
The aforementioned purity was a dead end. I’’ll try to find a way to fetch the info.
At least now. I know where all the information is.
From there I will try to generate code in either a virtual file, or an physical. (A virtual file is from an PSI standpoint viewable, but the User of the annotation. Can not see the generated code. I hope to avoid this path, but let’s see)

[Imran/Malic]

VirtualFile docs https://upsource.jetbrains.com/idea-ce/file/idea-ce-c7e453646ff4e8b28cac88459c8d4271b1032ec8/platform/core-api/src/com/intellij/openapi/vfs/VirtualFile.java

[AdrianRaFo]

I think we will need the physical one if we need to do the same hack as on kapt

[Imran/Malic]

Those how, read into the doc’s need to get used to the idea. That in intellij PSIElements are either files or directory. I am still at the beginning to find a function, which can distinguish those two.

Thereby the meaning of PSIElement children makes sense, now at least.

[AdrianRaFo]

don't worry you are doing a good job