call hierarchy not available in TypeScript file

[mkq]

(Moved from (https://bugs.eclipse.org/bugs/show_bug.cgi?id=583302):)

In a TypeScript file (opened with Generic Text Editor by default) in the context menu on a function declaration, "Open Call Hierarchy" is disabled. Could you please make it work?

(The required information seems to be available: Ctrl+Shift+G "Find References" finds callers; and F3 "Open Declaration" on a caller navigates to the called function.)

I love the call hierarchy (in Java). It's so much simpler than emulating it with consecutive "Find References" where I get lost quickly.

I used a new workspace and a fresh installation of eclipse-jee-2024-03-R-win32-x86_64.zip AKA:
Eclipse IDE for Enterprise Java and Web Developers (includes Incubating components)
Version: 2024-03 (4.31.0)
Build id: 20240307-1437

Thanks!

[mickaelistria]

I'm not much familiar with "Call hierarchy" to be honest.
But if you think it can be implemented with a combination of standard LSP features (find-references + open declaration), then it could be a good addition to LSP4E project directly so that would work for all languages that are supported by a language server.
What do you think?

[mkq]

Sorry. I didn't want to claim that I know how to implement that. I don't know anything about Eclipse development.

I just meant - purely from the user's perspective - it looks like the callers information is available, so it shouldn't be too much effort to display it as a call hierarchy tree.

[mickaelistria]

it shouldn't be too much effort to display it as a call hierarchy tree.

Probably not. But at the moment, I don't think this can become a priority of the maintainers. However, if you're willing to contribute it, most of us would be happy to assist you in doing so and to review and merge good code.

[mkq]

That's a pity.

I consider call hierarchy a basic IDE feature. I always find it baffling when I see a colleague use multiple "find references" and mental backtracking, while in a call hierarchy, you can immediately see where to continue your search (i. e. expand not yet expanded nodes). I will probably continue to use VSCode for TypeScript (which is another pity, because I hate IDEs / code editors with such a limited view / perspective management).

[sebthom]

Addressed in https://github.com/eclipse-lsp4e/lsp4e/releases/tag/0.28.0