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Toward Verified Library-Level Choreographic Programming with Algebraic Effects

2024/07/09 by Gan Shen, Shen, Gan, Lindsey Kuper +1 · 1 citation
Computer Science · #Artificial Intelligence in Games #Computability, Logic, AI Algorithms #FOS: Computer and information sciences #Programming Languages (cs.PL) #Reinforcement Learning in Robotics

paper · pdf · doi:10.48550/arxiv.2407.06509

openalex publication_date 2024/07/09 · openalex created_date 2024/07/11 · openalex updated_date 2026/07/28

Abstract

Choreographic programming (CP) is a paradigm for programming distributed applications as single, unified programs, called choreographies, that are then compiled to node-local programs via endpoint projection (EPP). Recently, library-level CP frameworks have emerged, in which choreographies and EPP are expressed as constructs in an existing host language. So far, however, library-level CP lacks a solid theoretical foundation. In this paper, we propose modeling library-level CP using algebraic effects, an abstraction that generalizes the approach taken by existing CP libraries. Algebraic effects let us define choreographies as computations with user-defined effects and EPP as location-specific effect handlers. Algebraic effects also lend themselves to reasoning about correctness properties, such as soundness and completeness of EPP. We present a prototype of a library-level CP framework based on algebraic effects, implemented in the Agda proof assistant, and discuss our ongoing work on leveraging the algebraic-effects-based approach to prove the correctness of our library-level CP implementation.

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