coq-of-ocaml

Compile a subset of OCaml to Coq
README

https://clarus.github.io/coq-of-ocaml/

Start with the file main.ml:

type 'a tree =
  | Leaf of 'a
  | Node of 'a tree * 'a tree

let rec sum tree =
  match tree with
  | Leaf n -> n
  | Node (tree1, tree2) -> sum tree1 + sum tree2

Run:

coq-of-ocaml main.ml

Get a file Main.v:

Require Import CoqOfOCaml.CoqOfOCaml.
Require Import CoqOfOCaml.Settings.

Inductive tree (a : Set) : Set :=
| Leaf : a -> tree a
| Node : tree a -> tree a -> tree a.

Arguments Leaf {_}.
Arguments Node {_}.

Fixpoint sum (tree : tree int) : int :=
  match tree with
  | Leaf n => n
  | Node tree1 tree2 => Z.add (sum tree1) (sum tree2)
  end.

Features

  • core of OCaml (functions, let bindings, pattern-matching,...) ✔️

  • type definitions (records, inductive types, synonyms, mutual types) ✔️

  • modules as namespaces ✔️

  • modules as dependent records (signatures, functors, first-class modules) ✔️

  • projects with complex dependencies using .merlin files ✔️

  • .ml and .mli files ✔️

  • existential types ✔️

  • partial support of GADTs 🌊

  • partial support of polymorphic variants 🌊

  • partial support of extensible types 🌊

  • ignores side-effects ❌

Even in case of errors we try to generate some Coq code. The generated Coq code should be readable and with a size similar to the OCaml source. One should not hesitate to fix remaining compilation errors, by hand or with a script (name collisions, missing Require,...).

Install

Latest stable version

Using the package manager opam,

opam install coq-of-ocaml

Current development version

To install the current development version:

opam pin add https://github.com/clarus/coq-of-ocaml.git#master

Manually

Read the coq-of-ocaml.opam file at the root of the project to know the dependencies to install and get the list of commands to build the project.

Usage

coq-of-ocaml compiles the .ml or .mli files using Merlin to understand the dependencies of a project. One first needs to have a compiled project with a working configuration of Merlin. The basic command is:

coq-of-ocaml file.ml

You can start to experiment with the test files in tests/ or look at our online examples.

License

MIT © Guillaume Claret.

Install
Published
15 Mar 2021
Maintainers
Sources
2.4.1.tar.gz
sha256=5856656d5542475e7eaf9e82a8348d85754f5c1ef1c56240ca97234793fb68ff
sha512=44530bce7d40c8a27459db17c504b2a14d9c37fdbb0658df70bcf376df4309bd88222b89a069d8534c09eb40f1394dabda2bade9e44a9fde5a49b01fc9325d35
Dependencies
yojson
>= "1.6.0"
ocamlfind
>= "1.5.2"
ocaml
>= "4.10" & < "4.11"
dune
>= "2.8"
csexp
< "1.5"
Reverse Dependencies