engine-lex-pattern

The data-driven lexer: every pattern comes from the language definition.

What it is

A lexer engine with no Rust lexing logic. It collects LexerRuleDef fragments from the Language, sorts them by priority ascending, and applies them: literals, character classes, numbers and delimited blocks are all data. Swapping the lexer is a change to lexer_rules, not a recompile (ADR-0044 §1, §3).

Start here

• Reference — public API
• How-to — task recipes
• Explanation — design and rationale

No tutorials: this repo is a building block used from Rust. End-to-end walkthroughs live with the product that composes it — see the Handl platform.