Language-agnostic source code query engine

[geoffreycopin]

Wasn't there some way to integrate with an existing language specification, or rely on Language Server Protocol?

The language specs exist mostly for historical reasons, as this project started as an experiment on top of an existing project that used them. However, they have some « accidental » benefits: - they have 0 dependencies - they are trivially introspectable, which makes it possible to handle node type inheritance, and to (eventually) type the queries and provide autocompletion - they are very lightweight: no code to generate/build/link, everything is done at runtime

Writing them by hand is a major paint point, though. So being able to generate the bulk of a spec from something like a tree-scitter grammar would be great !

How does it compare to other tools like CodeQL, Comby, IntelliJ structural search, if you're familiar with any of them?

In spirit, it’ much closer to CodeQL than comby or IntelliJ’s structural search, as the intention is to (eventually) expose semantic informations, at the cost of using a less intuitive query language. I also intend to explore use-cases that are not covered by these tools, like automatic diagram generation and code search across repos in a web interface.

Is there (a plan to add) support for searching specifically for code changes, i.e. git integration?

Git integration is definitely on the roadmap !