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Conference Papers Year : 2014

A Trusted Mechanised JavaScript Specification

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Abstract

JavaScript is the most widely used web language for client-side applications. Whilst the development of JavaScript was initially just led by implementation, there is now increasing momentum behind the ECMA standardisation process. The time is ripe for a formal, mechanised specification of JavaScript, to clarify ambiguities in the ECMA standards, to serve as a trusted reference for high-level language compilation and JavaScript implementations, and to provide a platform for high-assurance proofs of language properties. We present JSCert, a formalisation of the current ECMA standard in the Coq proof assistant, and JSRef, a reference interpreter for JavaScript extracted from Coq to OCaml. We give a Coq proof that JSRef is correct with respect to JSCert and assess JSRef using test262, the ECMA conformance test suite. Our methodology ensures that JSCert is a comparatively accurate formulation of the English standard, which will only improve as time goes on. We have demonstrated that modern techniques of mechanised specification can handle the complexity of JavaScript.
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Dates and versions

hal-00910135 , version 1 (27-11-2013)

Identifiers

  • HAL Id : hal-00910135 , version 1

Cite

Martin Bodin, Arthur Charguéraud, Daniele Filaretti, Philippa Gardner, Sergio Maffeis, et al.. A Trusted Mechanised JavaScript Specification. POPL 2014 - 41st ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages, Jan 2014, San Diego, United States. ⟨hal-00910135⟩
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