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Thu 23 Jan 2020 14:43 - 15:05 at Ile de France II (IDF II) - Type Systems Chair(s): Peter Thiemann

We present Turnstile+, a high-level, macros-based metaDSL for building dependently typed languages.

With it, programmers may rapidly prototype and iterate on the design of new dependently typed features and extensions.

Or they may create entirely new DSLs whose dependent type “power” is tailored to a specific domain.

Our framework’s support of language-oriented programming also makes it suitable for experimenting with systems of interacting components, e.g., a proof assistant and its companion DSLs.

This paper explains the implementation details of Turnstile+, as well as how it may be used to create a wide-variety of dependently typed languages, from a lightweight one with indexed types, to a full spectrum proof assistant, complete with a tactic system and extensions for features like sized types and SMT interaction.

Dependent Type Systems as Macros (slides) (2020-01-23 POPL.pdf)563KiB

Thu 23 Jan
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14:00 - 15:05: Type SystemsResearch Papers at Ile de France II (IDF II)
Chair(s): Peter ThiemannUniversity of Freiburg, Germany
14:00 - 14:21
Undecidability of D<: and Its Decidable FragmentsDistinguished Paper
Research Papers
Jason Z.S. HuMcGill University, Ondřej LhotákUniversity of Waterloo
Link to publication DOI Media Attached File Attached
14:21 - 14:43
Decidable Subtyping for Path Dependent Types
Research Papers
Julian MackayVictoria University of Wellington, Alex PotaninVictoria University of Wellington, Jonathan AldrichCarnegie Mellon University, Lindsay GrovesVictoria University of Wellington
Link to publication DOI Media Attached
14:43 - 15:05
Dependent Type Systems as Macros
Research Papers
Stephen ChangNortheastern University, Michael BallantynePLT @ Northeastern University, Milo TurnerPLT @ Northeastern University, William J. BowmanUniversity of British Columbia
Link to publication DOI Media Attached File Attached