Awesome

tree-sitter-rst

reStructuredText grammar for tree-sitter. Based on the specification from https://docutils.sourceforge.io/docs/ref/rst/restructuredtext.html.

Check the playground at https://stsewd.dev/tree-sitter-rst/.

Note: this grammar is still under development, a lot of things may change!

TODO

• Allow lists with blank lines between items
• Refactor parse citation and footer reference
• Nested line blocks
• Option lists
• Add some nodes to inline?
• Check if there is a way to re-implement some nodes to JS instead of C?
• A definition list with classifiers can't be separated by a blank line.
• tests, tests, and more tests!

Design notes

• Nodes that contain body elements inside (like lists or directives), are inside a node named body.
• In RST sections are a big node that contains body elements, here they are just a node containing the title. This is to avoid guessing the level of subtitles.
• In RST standalone hyperlinks are reference nodes, here they are standalone_hyperlink nodes. This is to avoid confusion with inline references nodes (that are a reference node).
• Literal blocks are part of the paragraph they precede, not a separate node, except for the expanded form of literal blocks.
• In rst directives only have "body" node, here the body is parsed as arguments/options/content.

Design decisions

• Implement tables?

• Validate length of adornments in sections?

  The spec doesn't mention this, but this paragraph does.

  The underline/overline must be at least as long as the title text.

  https://docutils.sourceforge.io/docs/user/rst/quickstart.html

Projects using this grammar

• nvim-treesitter
• helix
• Yours?

Contributing

Check the CONTRIBUTING.md file

Other grammars

• tree-sitter-comment: grammar for comment tags like TODO, FIXME(user).