Automatic callgraph generation

[MartyMcFlyInTheSky]

When browsing large codebases it can be cumbersome to get the right mental picture of the components architecture. It would be nice to have a quick look at the callgraphs of the current file or maybe multiple files just one shortcut away.

This is just a rough idea but I guess most developers know what I mean.

[HighCommander4]

It's an interesting idea.

I think the first step to fleshing it out would be to figure out, given that clangd is based on the Language Server Protocol, what part of this feature would be implemented by the server vs. the client, and whether an extension to the protocol is necessary.

[i-ky]

There is/was a wonderful project - Sourcetrail by CoatiSoftware. It is now abandoned, but there is a fork trying to keep it alive. There are extensions/plugins for various IDEs/text editors including VS Code.

[catskul]

@HighCommander4 landed the necessary feature upstream in clangd main here:
llvm/llvm-project#117673

Not sure if vscode-clangd would need any adjustment or if the language server protocol is already handled in vscode and thus would "just work"

I tried it and it works! 🚀 🎉

[vmoros]

@catskul that's awesome news. Could you please share a screenshot of the resulting callgraph? I'd love to see it.

[catskul]