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https://github.com/6cdh/tree-sitter-scheme

Scheme grammar for tree-sitter
https://github.com/6cdh/tree-sitter-scheme

scheme tree-sitter

Last synced: 3 months ago
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Scheme grammar for tree-sitter

Host: GitHub
URL: https://github.com/6cdh/tree-sitter-scheme
Owner: 6cdh
License: mit
Created: 2022-04-01T05:46:58.000Z (over 2 years ago)
Default Branch: main
Last Pushed: 2024-04-12T01:34:00.000Z (7 months ago)
Last Synced: 2024-06-25T10:38:51.824Z (5 months ago)
Topics: scheme, tree-sitter
Language: Scheme
Homepage:
Size: 626 KB
Stars: 26
Watchers: 5
Forks: 4
Open Issues: 4
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE

Awesome Lists containing this project

README

        # tree-sitter-scheme

[![Build/test](https://github.com/6cdh/tree-sitter-scheme/workflows/Build/test/badge.svg)](https://github.com/6cdh/tree-sitter-scheme/actions/workflows/test.yml)

Scheme grammar for tree-sitter.

## Recent News

* With R7RS support, a single `|` can no longer appears in the middle of an identifier.

* The nodes `directive` no longer contain sub nodes `symbol`. Now it's a single node.

* some extensions added, see below

## Status

~~tree-sitter-scheme should work on a superset of Scheme.~~

Different Implementations might have conflict grammar. I am not sure if I should support

them. If you need some implementation-specific features, please open an issue, then I will consider support it.

current status:

* [x] R5RS

* [x] R6RS

* [x] R7RS

* [ ] Extensions

  * [x] `{}` as replacement for `()` or `[]`

  * [x] extend symbols which can start with digits, period, ... etc as long as it's not a number

  * [x] keyword `#:symbol`

  * [x] escape sequence in string `\` + any character

  * [x] characters `#\bel`, `#\ls`, `#\nel`, `#\rubout`, `#\vt`

Please open an issue to let me know it's really used if you want to add new extensions.

## Implementation

* [ ] Support for implementation

  * [ ] Chez Scheme ([#1](https://github.com/6cdh/tree-sitter-scheme/issues/1))

  * [ ] Chicken Scheme ([#3](https://github.com/6cdh/tree-sitter-scheme/issues/3))

  * [ ] Guile Scheme ([#7](https://github.com/6cdh/tree-sitter-scheme/issues/7))

## Usage

See [nodes.md](./nodes.md) for all visible nodes.

This parser don't parse language constructs. Instead, it parse code as lists.

If you want language constructs support, use custom queries (see [#5](https://github.com/6cdh/tree-sitter-scheme/issues/5)), also see [thchha/tree-sitter-scheme](https://gitlab.com/thchha/tree-sitter-scheme).

## Query

The queries here are too simple and not intended to be useful in an editor.

Please open an issue if you have suggestions.

## Reference

Scheme

* [R5RS](https://schemers.org/Documents/Standards/R5RS/)

* [R6RS](http://www.r6rs.org/)

* [R7RS](https://small.r7rs.org/)

* [The Scheme Programming Language](https://www.scheme.com/tspl4/)

Tree-sitter

* [official documents](https://tree-sitter.github.io/tree-sitter)

* [Guide to your first Tree-sitter grammar](https://gist.github.com/Aerijo/df27228d70c633e088b0591b8857eeef)

* [tree-sitter-clojure](https://github.com/sogaiu/tree-sitter-clojure)

* [tree-sitter-commonlisp](https://github.com/theHamsta/tree-sitter-commonlisp)

* [tree-sitter-fennel](https://github.com/TravonteD/tree-sitter-fennel)