tree-sitter-vala

Workflow

You need the tree-sitter CLI. On Arch, install tree-sitter.

1. edit grammar.js
2. tree-sitter generate
3. tree-sitter test

You can use tree-sitter parse <file> and tree-sitter highlight <file> after regenerating.

Neovim integration

For a working neovim integration you need to install this grammar with

:TSInstall vala

And you need to install the vala.vim plugin to recognize the filetype.

For vim-plug this would be:

Plug 'vala-lang/vala.vim'

Then install with

:PlugUpdate

For other plugin mangers consider the install steps will be different.