[Feature] Call Hierarchy Navigation

[pidgeon777]

LSP supports Call Hierarchy, to see the called function, or the functions they call. See from here:

https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_prepareCallHierarchy

It would be great to add a function to the AerialNav panel so that, instead of the symbol hierarchy, it is possible to navigate the call hierarchy.

So:

• Left window: functions which call function_xxx
• Middle window: function_xxx
• Right window: functions called by function_xxx

This could be implemented in three ways:

• Using a different command, e.g. AerialNavCallHierarchy.
• Using the same AerialNav window, switching to the call hierarchy and symbols mode with a keybinding.
• Showing both the symbols and the calls in the same AerialNav window.

[stevearc]

This sounds pretty divergent with the previous functions of aerial. If this feature was built as a standalone plugin, would there be any overlap with aerial other than the miller column UI?

[stevearc]

Closing as out of scope