opam-version: "2.0"
authors: ["Petter A. Urkedal"]
maintainer: "paurkedal@gmail.com"
homepage: "https://github.com/paurkedal/ppx_compose/"
bug-reports: "https://github.com/paurkedal/ppx_compose/issues"
dev-repo: "git+https://github.com/paurkedal/ppx_compose.git"
license: "LGPL-3.0-only WITH OCaml-LGPL-linking-exception"

build: [
  ["jbuilder" "build" "-p" name "-j" jobs]
  ["jbuilder" "runtest" "-p" name "-j" jobs] {with-test}
]
depends: [
  "ocaml" {>= "4.02.3"}
  "jbuilder" {>= "1.0+beta7"}
  "ocaml-migrate-parsetree" {< "2.0.0"}
]
synopsis: "Inlined Function Composition"
description: """
`ppx_compose` is a simple syntax extension which rewrites code containing
function compositions into composition-free code, effectively inlining the
composition operators.  The following two operators are supported

    let (%) g f x = g (f x)
    let (%>) f g x = g (f x)

Corresponding definitions are not provided, so partial applications of `(%)`
and `(%>)` will be undefined unless you provide the definitions.

The following rewrites are done:

  * A composition occurring to the left of an application is reduced by
    applying each term of the composition from right to left to the
    argument, ignoring associative variations.

  * A composition which is not the left side of an application is first
    turned into one by η-expansion, then the above rule applies.

  * Any partially applied composition operators are passed though unchanged.

E.g.

    h % g % f ==> (fun x -> h (f (g x)))
    h % (g % f) ==> (fun x -> h (f (g x)))
    (g % f) (h % h) ==> g (f (fun x -> h (h x)))"""
url {
  src:
    "https://github.com/paurkedal/ppx_compose/releases/download/v0.0.4/ppx_compose-0.0.4.tbz"
  checksum: [
    "sha256=22e46520a7ff8a846e32e64324b3d65a3f7ea29d27d1260ae7423e9b45f609e2"
    "md5=d597c0b1cf29402bbd29d821792c867e"
  ]
}