Converting an ast.Node into a golang.org/x/net/html.Node?

[philion]

I'm trying create a tool for markdown query like jq for JSON files.

Specifically, given an XPath-like query string, match the selected nodes in the markdown document.

Libraries like https://github.com/antchfx/xpath and https://github.com/andybalholm/cascadia take an html.Node to perform the match, but goldmark uses the ast.Node interface that is very similar but in no way directly compatible.

Current solution is to parse markdown to the simplest HTML, then re-parse that with the standard Go HTML parser into an html.Node that can then be passed into xpath.QueryAll() or something similar. This feels really clunky, and I'm trying to find a better way.

Is there a suggested way to make this work that doesn't involve re-coping or re-parsing the document?

I'm experimenting with forking and refactoring goldmark ast to parse into html.Nodes instead, but my initial approach of "just replace everywhere BaseNode is mentioned with html.Node" is going much slower then expected and is producing more bugs than solving.

Thanks!