Explanation

Why this crate exists

Hand-written lexers put grammar knowledge in Rust, so every language variant needs a fork. Reading the rules from data keeps one engine for all languages and makes grammar reviewable as data.

Where it sits

This crate belongs to the engine-* family. Plugins, kits and hosts reach it through the kit's operation slot, so the engine can be swapped without touching a language definition.

See the reference for the API and the how-to guides for tasks.