https://github.com/epfl-systemf/linden

Formal Verification for JavaScript Regular Expressions
https://github.com/epfl-systemf/linden

Last synced: 9 months ago
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Formal Verification for JavaScript Regular Expressions

• Host: GitHub
• URL: https://github.com/epfl-systemf/linden
• Owner: epfl-systemf
• Created: 2025-08-14T12:25:26.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2025-09-18T15:18:50.000Z (9 months ago)
• Last Synced: 2025-09-18T16:59:46.160Z (9 months ago)
• Language: Rocq Prover
• Size: 4.6 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
Linden: Formal Verification for JavaScript Regular Expressions

==============================================================

Authors: [Aurèle Barrière](https://aurele-barriere.github.io/), [Victor Deng](https://victor-deng.fr/) and [Clément Pit-Claudel](https://pit-claudel.fr/clement/).

Related Preprint: [Formal Verification for JavaScript Regular Expressions: a Proven Semantics and its Applications](https://arxiv.org/abs/2507.13091). Appendix A provides a correspondence between paper definitions and the code.

![Linden](etc/linden.png)

# About

This repository contains mechanized proofs, in Rocq, about JavaScript Regular Expressions.

This includes:

- a new *backtracking tree* semantics for JavaScript regexes, in folder `Semantics`.

- a proof that this semantics is equivalent to the [Warblre](https://github.com/epfl-systemf/Warblre) mechanization of JavaScript regexes, in folder `WarblreEquiv`.

- a proof of the PikeVM linear-time matching algorithm supporting a subset of JavaScript regexes, in folder `Engine`. The algorithm is adapted to fit JavaScript unique quantifier semantics, following section 4.1 of [Linear Matching of JavaScript Regular Expressions](https://dl.acm.org/doi/10.1145/3656431).

- proof of JavaScript regex *contextual equivalences*, in folder `Rewriting`.

# Dependencies

- coq 8.18.0

- Warblre 0.1.0

- dune >= 3.14

# Usage

Build all proofs with `dune build`.