Function parse_document 

pub fn parse_document(source: &str) -> ParsedDocument

Parses source as a .pactole document and collects syntax diagnostics.

This function never fails: malformed input yields a ParsedDocument whose ParsedDocument::diagnostics describe the ERROR/MISSING nodes found in the resulting concrete syntax tree.

Panics

Panics if the tree-sitter parser fails to load the Pactole grammar, which would indicate a build-time inconsistency rather than a user-facing error.