Open Source Swift Code Generators

Copilot for Xcode is an Xcode Source Editor Extension that provides GitHub Copilot, Codeium and ChatGPT support for Xcode.

Promises simplify asynchronous programming, freeing you up to focus on the more important things. They are easy to learn, easy to master and result in clearer, more readable code. Your co-workers will thank you. PromiseKit is a thoughtful and complete implementation of promises for any platform that has a swiftc. It has excellent Objective-C bridging and delightful specializations for iOS, macOS, tvOS and watchOS. It is a top-100 pod used in many of the most popular apps in the world. We are testing PromiseKit 7 alpha, it is Swift 5 only. It is tagged and thus importable in all package managers. PromiseKit 6, 5 and 4 support Xcode 8.3, 9.x and 10.0; Swift 3.1, 3.2, 3.3, 3.4, 4.0, 4.1, 4.2, 4.3 and 5.0 (development snapshots); iOS, macOS, tvOS, watchOS, Linux and Android; CocoaPods, Carthage and SwiftPM; (CI Matrix). For Carthage, SwiftPM, Accio, etc., or for instructions when using older Swifts or Xcodes, see our Installation Guide. We recommend Carthage or Accio.

Rx is a generic abstraction of computation expressed through Observable<Element> interface, which lets you broadcast and subscribe to values and other events from an Observable stream. RxSwift is the Swift-specific implementation of the Reactive Extensions standard. While this version aims to stay true to the original spirit and naming conventions of Rx, this projects also aims to provide a true Swift-first API for Rx APIs. Cross platform documentation can be found on ReactiveX.io. Like other Rx implementation, RxSwift's intention is to enable easy composition of asynchronous operations and streams of data in the form of Observable objects and a suite of methods to transform and compose these pieces of asynchronous work. KVO observation, async operations, UI Events and other streams of data are all unified under abstraction of sequence. This is the reason why Rx is so simple, elegant and powerful.

Sourcery is a code generator for Swift language, built on top of Apple's own SwiftSyntax. It extends the language abstractions to allow you to generate boilerplate code automatically. It's used in over 40,000 projects on both iOS and macOS and it powers some of the most popular and critically-acclaimed apps you have used (including Airbnb, Bumble, New York Times). Its massive community adoption was one of the factors that pushed Apple to implement derived Equality and automatic Codable conformance. Sourcery is maintained by a growing community of contributors. Try Sourcery for your next project or add it to an existing one, you'll save a lot of time and be happy you did! Sourcery allows you to get rid of repetitive code and create better architecture and developer workflows. An example might be implementing Mocks for all your protocols, without Sourcery you will need to write hundreds lines of code per each protocol.

SwiftGen is a tool to automatically generates Swift code for resources of your projects (like images, localized strings, etc), to make them type-safe to use. Also, it's fully customizable thanks to Stencil templates, so even if it comes with predefined templates, you can make your own to generate whatever code fits your needs and your guidelines! SwiftGen is provided as a single command-line tool that uses a configuration file to define the various parsers to run (depending on the type of input files you need to parse) and their parameters. To create a sample configuration file as a starting point to adapt to your needs, run swiftgen config init. To use SwiftGen, simply create a swiftgen.yml YAML file (either manually or using swiftgen config init) then edit it to adapt to your project. The config file should list all the parsers to invoke, and for each parser, the list of inputs/outputs/templates/parameters to use for it.

XcodeGen is a command line tool written in Swift that generates your Xcode project using your folder structure and a project spec. The project spec is a YAML or JSON file that defines your targets, configurations, schemes, custom build settings and many other options. All your source directories are automatically parsed and referenced appropriately while preserving your folder structure. Sensible defaults are used in many places, so you only need to customize what is needed. Very complex projects can also be defined using more advanced features. Generate projects on demand and remove your .xcodeproj from git, which means no more merge conflicts! Automatically generate Schemes for different environments like test and production. Share build settings across multiple targets with build setting groups. Easily copy and paste files and directories without having to edit anything in Xcode.