Hi all,

I had mentioned in my previous update that I was looking into a purely lexer-based formatting implementation. I realised this wouldn't work due to poor error handling, lack of semantic information, and poor future-proofing in case we want to add context-sensitive format rules going forward. For these reasons, it would be ideal to use an AST instead.

Across the last week, I've been working on getting an existing pass to use the DMD AST (specifically, the pass to format comments). Currently, dfmt traverses the entire tree and stores the locations of each type of token, and later operates on the token stream. I'm trying to see if there's a way to directly operate on the AST without having to store the location information.

On Friday, 6 October 2023 at 16:20:07 UTC, Prajwal S N wrote:

Are you trying to write your own formatter inspired by dfmt or rewrite dfmt to use dmd's code?

On Friday, 6 October 2023 at 16:21:29 UTC, max haughton wrote:

I'm refrctoring dfmt to use DMD's code, but it's not a simple one-to-one port due to the differences between libdparse and DMD.