{"id":31195632,"url":"https://github.com/epfl-systemf/linden","last_synced_at":"2025-09-20T03:45:44.298Z","repository":{"id":315435732,"uuid":"1037977606","full_name":"epfl-systemf/Linden","owner":"epfl-systemf","description":"Formal Verification for JavaScript Regular Expressions","archived":false,"fork":false,"pushed_at":"2025-09-18T15:18:50.000Z","size":4823,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-09-18T16:59:46.160Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Rocq Prover","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/epfl-systemf.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2025-08-14T12:25:26.000Z","updated_at":"2025-08-19T14:46:12.000Z","dependencies_parsed_at":"2025-09-18T21:46:02.679Z","dependency_job_id":null,"html_url":"https://github.com/epfl-systemf/Linden","commit_stats":null,"previous_names":["epfl-systemf/linden"],"tags_count":1,"template":false,"template_full_name":null,"purl":"pkg:github/epfl-systemf/Linden","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/epfl-systemf%2FLinden","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/epfl-systemf%2FLinden/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/epfl-systemf%2FLinden/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/epfl-systemf%2FLinden/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/epfl-systemf","download_url":"https://codeload.github.com/epfl-systemf/Linden/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/epfl-systemf%2FLinden/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":276042108,"owners_count":25574998,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-09-20T02:00:10.207Z","response_time":63,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-09-20T03:45:41.265Z","updated_at":"2025-09-20T03:45:44.291Z","avatar_url":"https://github.com/epfl-systemf.png","language":"Rocq Prover","funding_links":[],"categories":[],"sub_categories":[],"readme":"Linden: Formal Verification for JavaScript Regular Expressions\n==============================================================\n\nAuthors: [Aurèle Barrière](https://aurele-barriere.github.io/), [Victor Deng](https://victor-deng.fr/) and [Clément Pit-Claudel](https://pit-claudel.fr/clement/).\n\nRelated 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.\n\n![Linden](etc/linden.png)\n\n# About\n\nThis repository contains mechanized proofs, in Rocq, about JavaScript Regular Expressions.\nThis includes:\n- a new *backtracking tree* semantics for JavaScript regexes, in folder `Semantics`.\n- a proof that this semantics is equivalent to the [Warblre](https://github.com/epfl-systemf/Warblre) mechanization of JavaScript regexes, in folder `WarblreEquiv`.\n- 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).\n- proof of JavaScript regex *contextual equivalences*, in folder `Rewriting`.\n\n# Dependencies\n- coq 8.18.0\n- Warblre 0.1.0\n- dune \u003e= 3.14\n\n# Usage\nBuild all proofs with `dune build`.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fepfl-systemf%2Flinden","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fepfl-systemf%2Flinden","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fepfl-systemf%2Flinden/lists"}