Tree-sitter mode for Emacs

[bolsen]

Hi,

I have been learning Pascal for a little while as a hobby. Lazarus is OK, but I am used to Emacs. I gotten to a point where I feel comfortable using it (LSP, highlighting and other creature comforts), but I suppose there is some work to be done (or there is work that I need to do!)

However: The opascal-mode that comes with Emacs is OK for indenting (for now) but the syntax highlighting, at least out of the box, didn't look good for me. I thought I would try a tree-sitter mode, but couldn't find anything at all that uses the existing tree-sitter parser (https://github.com/Isopod/tree-sitter-pascal) (forgive me if I missed something.) So I started something: https://github.com/bolsen/pascal-ts-mode.git . After a few hours poking at it, code looks nicer in Emacs.

I hope this is useful for others.

Brian

[d2010]

Hi,
I have been learning Pascal for a little while as a hobby. Lazarus is OK, but I am used to Emacs. I gotten to a point where I feel comfortable using it (LSP, highlighting and other creature comforts), but I suppose there is some work to be done (or there is work that I need to do!)
Brian

Can You, anyone share to a public,  many many demos with EmacS'Pascal?
I have a few experienced with "clone-Pascal", I am happy to test and EmacsPascaL.
But I need a downloading one big .zip with full Emacs-with-Demos.zip"
(e.g Portable.zip from sourceforge.com)
 

[bolsen]

Can You, anyone share to a public,  many many demos with EmacS'Pascal?
I have a few experienced with "clone-Pascal", I am happy to test and EmacsPascaL.
But I need a downloading one big .zip with full Emacs-with-Demos.zip"
(e.g Portable.zip from sourceforge.com)
 

Maybe some day.

I have setup now is using github.com/genericptr/pascal-language-server for LSP support. That is not complete, but it is the best one I found so far (also I see there are issues raised that prevent building on the master/main branch.) I use Lazarus right now for debugging and setting up projects, but use lazbuild via `M-x compile` in Emacs otherwise.Anything Pascal through Emacs was not a plug-and-play experience for me like other programming languages, but there is something decent now.

This is also critical to using lazbuild in Emacs compilation-mode:

Code: Pascal  [Select][+][-]

1. (add-to-list 'compilation-error-regexp-alist 'fpc)
2. (add-to-list 'compilation-error-regexp-alist-alist
3.             '(fpc "^\\(.+\\)(\\([0-9]+\\),\\([0-9]+\\)) \\(.+\\):.+" 1 2 3 (4)))

Ideally, a lot of workflows can be done with smashing 3rd-party tools together, but Lazarus still has its place (and something to lean on to implement those cmd line tools, I guess )

[bolsen]

I added a bit more that I find useful :
1. Use M-x compile (like I said in my last post)
2. A flycheck checker for getting errors in source. With lsp-ui, it looks really nice   It uses `fpc` to get syntax. From my view, the time it takes to boot the compiler from a cold start takes the most time, so this is probably something to eventually tweak.

In some time, I will integrate a better lsp client, which supports https://github.com/genericptr/pascal-language-server better (this mostly completes the stack for me and have been using it for awhile. With flycheck showing syntax errors, it makes the experience with the lsp server better.)

[AlexK]

I have setup now is using github.com/genericptr/pascal-language-server for LSP support. That is not complete, but it is the best one I found so far (also I see there are issues raised that prevent building on the master/main branch.)

Opascal has lsp now. Those build instructions, though.

I'm gonna explore modern ctags potential..

[bolsen]

Opascal has lsp now. Those build instructions, though.

I'm gonna explore modern ctags potential..

Yeah, the lsp server is also slightly broken (edit: to be fair: not "broken", but as it is described in the repo, incomplete.) I had to fix things, but I have to revisit it if it is worth doing a pull request.