I want to generate Lenses for all structs

Contributed by @filip_zawada

What are Lenses? Great explanation by @mbrandonw

This script assumes you follow swift naming convention, e.g. structs start with an upper letter.

Stencil template

Example output:

extension House {

  static let roomsLens = Lens<House, Room>(
    get: { $0.rooms },
    set: { rooms, house in
       House(rooms: rooms, address: house.address, size: house.size)
  static let addressLens = Lens<House, String>(
  get: { $0.address },
  set: { address, house in
     House(rooms: house.rooms, address: address, size: house.size)