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Rust pi-forall

An implementation of pi-forall in Rust.

Motivation

pi-forall is a demo dependently-typed programming language. Its reference implementation is written in Haskell, which is accompanied by lecture notes. In this repository, I replicate that work in Rust.

I replicate the full/ variant of pi-forall presented at OPLSS 2022. Though, I only reimplemented a subset of features that I consider interesting. Also keep in mind that idiomatic Rust has a vastly different structure from idiomatic Haskell; No monads, nor its transformers.

Features

Currently, we support:

  • Equality
  • Irrelevance

That roughly corresponds with version3/. Datatypes are still missing. (Though, the parser supports case statements)

Running

First, install Rust. Then, run (in this directory):

cargo run --release -- pi/Lec1.pi

That typechecks pi/Lec1.pi.