Lint Slim

[phoet]

I saw that the plugin can lint .haml files using the syntax_tree-haml gem. I assume there is no alternative for slim templates? I've recently had a look if there is anything providing auto-formating for slim, but only found slim-lint which unfortunately does not offer such a functionality.

What would need to be done to add slim? Pointers appreciated.

[kddnewton]

So do you mean linting or do you mean formatting? Assuming you mean formatting, yeah that doesn't exist at the moment. It would require a couple of steps. Here's a bit of a roadmap:

• Create a new repository that has the syntax_tree and prettier_print dependencies.
• Define SyntaxTree::Slim::parse(source) to return the AST. This should use slim's own parser to parse the source. From a quick glance it looks like it uses a gem called Temple under the hood, so I'd start with those docs.
• Define a visitor that will visit the AST that you got back. You can see how I hooked into existing trees like HAML or RBS.
• Define a formatter that inherits from the visitor and prints out the tree using prettier_print. You can see that done in every plugin.
• Call SyntaxTree::register_plugin with your SyntaxTree::Slim module, like we do in all the plugins. (Here's the JSON one.)

Best of luck! I'll be happy to include it in the ruby-syntax-tree GitHub org once you get started, or you could keep it on your own.

[phoet]

in case anyone is interested, i started to play around with it here https://github.com/phoet/syntax_tree-slim/blob/main/test/syntax_tree/slim_test.rb#L27-L61