This extension gives VSCode support for tree-sitter syntax coloring. Examples with tree-sitter coloring on the right:
Fixing colorization of an existing language
If you see something getting colored wrong, or something that should be colored but isn't, you can help! The simplest way to help is to create an issue with a simple example, a screenshot, and an explanation of what is wrong.
You are also welcome to fix the problem yourself and submit a PR. Colorization is performed by the various colorLanguage(x, editor) functions in src/colors.ts. When working on the colorization rules, please keep in mind two core principles:
Good colorization is consistent. It's better to not color at all than to color inconsistently.
Good colorization is selective. The fewer things that we color, the more emphasis the color gives.
Add a dependency on the npm package for that language: npm install tree-sitter-yourlang.
Add a color function to ./lib/colors.ts
Add a language to the dictionary at the top of ./lib/extension.ts
Add a simplified TextMate grammar to ./textmate/yourlang.tmLanguage.json. The job of this textmate grammar is just to color keywords and simple literals; anything tricky should be left white and colored by your color function.