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Restrictable Variants: A Simple and Practical Alternative to Extensible Variants (Artifact)

Authors Magnus Madsen , Jonathan Lindegaard Starup , Matthew Lutze



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Artifact Description

DARTS.9.2.12.pdf
  • Filesize: 0.5 MB
  • 3 pages

Document Identifiers

Author Details

Magnus Madsen
  • Department of Computer Science, Aarhus University, Denmark
Jonathan Lindegaard Starup
  • Department of Computer Science, Aarhus University, Denmark
Matthew Lutze
  • Department of Computer Science, Aarhus University, Denmark

Cite AsGet BibTex

Magnus Madsen, Jonathan Lindegaard Starup, and Matthew Lutze. Restrictable Variants: A Simple and Practical Alternative to Extensible Variants (Artifact). In Special Issue of the 37th European Conference on Object-Oriented Programming (ECOOP 2023). Dagstuhl Artifacts Series (DARTS), Volume 9, Issue 2, pp. 12:1-12:3, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2023)
https://doi.org/10.4230/DARTS.9.2.12

Artifact

Artifact Evaluation Policy

The artifact has been evaluated as described in the ECOOP 2023 Call for Artifacts and the ACM Artifact Review and Badging Policy

Abstract

In this artifact, we provide an implementation of the λ^res_var calculus, as described in the related article. The implementation is an extension of the Flix programming language compiler, supporting restrictable variants and the two partial pattern-matching constructs: choose and choose-⋆. The artifact consists of the extended Flix compiler, a Visual Studio Code extension supporting common IDE features such as syntax highlighting and type hovering, and a collection of Flix files demonstrating the use of restrictable variants. The Flix files correspond to examples presented in the paper. Users are invited to modify the Flix files in order to observe the influence of their changes on the inferred types in the provided programs.

Subject Classification

ACM Subject Classification
  • Theory of computation → Program semantics
Keywords
  • restrictable variants
  • extensible variants
  • refinement types
  • Boolean unification

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