This is an experiment to see if we can create a good parser for nu-lang.

• Ability to serve as a parser for a repl
• Ability to work in editors that support tree-sitter (hx, nvim, others)
• Ability to work in rust
• Fast
• Ability to be utilized for syntax highlighting
• ?

1. cargo install tree-sitter-cli
2. make sure nodejs and npm is installed (you may have to do npm install - see docs above)
3. tree-sitter generate
4. tree-sitter parse example-file.nu

1. main.rs
2. cargo run --example main

1. Add a file to test/corpus/descriptive_test_name.txt
2. Use the custom_command_1.txt as a guide
3. run tree-sitter test -f 'custom command 1' and evaluate the results
4. More information can be found here

• A line in the grammar.js that begins with $._blah means that blah is anonymous and won't show up in the final syntax tree.
• Most of the grammar how-to is found here

• https://siraben.dev/2022/03/22/tree-sitter-linter.html

• https://derek.stride.host/posts/comprehensive-introduction-to-tree-sitter

• https://tree-sitter.github.io/tree-sitter/

• https://rfdonnelly.github.io/posts/using-tree-sitter-parsers-in-rust/

• https://deepsource.io/blog/lightweight-linting/

• tree-sitter/tree-sitter#418

• https://github.com/DerekStride/tree-sitter-math