Custom visualization of dataframes

[sotte]

This is more a question than an issue. I'm wondering how one would go about implementing a custom widget/view for pandas dataframes. The default debug views don't really give you a nicely readable view of the the DF. For displaying one could use e.g. https://github.com/MunifTanjim/nui.nvim/tree/main/lua/nui/table, but I'm not sure how this would fit into the DAP ecosystem. Do you have any pointers/ideas?

[mfussenegger]

You could create some custom functions that use the session to retrieve the variables and then render them in whatever way you want.

I played around a while ago with graphviz to visualize variables, maybe that gives you an idea how to use the API:

https://github.com/mfussenegger/dotfiles/blob/b4762410a523ca19bd08102e0ac4f2a592a1fe8c/vim/.config/nvim/lua/me/dap.lua#L7-L106

Some more pointers:

• You can make any kind of request using the request method on the session. You get the session via dap.session(). The signature is session:request(method_name, params, [callback]). If you're in a coroutine, you can omit the callback and get a err, result tuple as result instead.
• The session has a current_frame property which contains a StackFrame if the session is stopped at a breakpoint.
• nvim-dap adds a scopes property to the StackFrame, which contains a list of Scopes
• evaluate could be useful if you want to evaluate arbitrary expressions

[sotte]

This is super helpful and way more than I was hoping for, thank @mfussenegger! This should be enough to build something.