Whenever you need to interface with C code, you will need to deal with constants, enumerations, etc.
Cast (for C-AST) allows to build elixir code directly from C AST.
Cast uses C AST built with castxml.
See Cast module documentation and examples in test/support.
The package can be installed by adding cast to your list of dependencies in
mix.exs:
def deps do
[
{:cast, "~> 0.1.0"}
]
end