Structure the code in modules

@sebbes wrote:

Hello,

I have troubles in splitting my app into modules & submodules using dune.

Here is my current project tree (following this SO answer: https://stackoverflow.com/a/53325230/3421913 ) :

├── dune
├── dune-project
├── booleanFormulae
│   ├── booleanFormulae.ml // begins with "open Types"
│   ├── booleanFormulae.mli // begins with "open Types"
│   ├── dune
│   ├── parser.ml // begins with "open Types"
│   └── types.ml
├── main.ml
├── test
│   ├── dune
│   └── test.ml

Here is the root dune file:

(executable
 (name main)
 (libraries BooleanFormulae))

Here is lib/dune:

(library 
    (name BooleanFormulae)
    (libraries angstrom)
    (preprocess (pps ppx_deriving.show ppx_deriving.ord)))

In the dune docs (https://dune.readthedocs.io/en/stable/dune-files.html), it is said

By default dune will use all the .ml/.re files in the same directory as the dune file.

So if I understand well, in the main.ml I should be able to open BooleanFormulae.Parser or
open BooleanFormulae.Types.
However, dune build main.exe complains:

File "main.ml", line 2, characters 5-27:
2 | open BooleanFormulae.Parser
         ^^^^^^^^^^^^^^^^^^^^^^
Error: Unbound module BooleanFormulae.Parser

Just referring to Parser in main.ml doesn’t work either.

What should I do? And is my project globally well structured?

Posts: 7

Participants: 3

Read full topic