How-to guides

Task recipes. Each assumes sibling checkouts of this repo and of the platform repos it patches.

Add an operator

Add grammar rows for the token with its left/right binding power; a precedence change is a data edit, not a code edit.

Consume the parse result

Read the root as the arena's last node — this engine appends children before their parents.

let ast = engine.parse(&request)?;
let root = ast.last().expect("parser always emits a root");