Swift Auto Completion Helper
This is a simple daemon that can read Xcode Swift projects and offers auto completion for Swift files and more over a built-in webserver. Effectively, this allows any kind of editor like Vim, Emacs, Sublime, or Atom to support Swift, Auto Completion, and Xcode projects.
It includes an example, very simple, Xcode like, editor (see SwiftCode folder) which explains how to use / embedd the actual SourceKittenDaemon.
Here's a video showing the example editor in action:
- Get completions for current position in document
- Get completions for edited, unsaved files (via temporary files)
- Return files in project
- Parse Xcode project and understand compiler arguments, targets, etc
- Communication over http for easy integration in various editors
This app uses the fantastic SourceKitten framework without which none of this would be possible. SourceKittenDaemon is really just a small wrapper that keeps an Xcode Project indexer running and offers a nice way to query Xcode Project properties and completions via a comfortable interface.
Have a look at the Protocol.org file, which explains how to start and use the daemon.
Building / Installation
You'll find an installable package under the releases tab
- Clone the repository
- Install via
SwiftCode Example Editor
You'll find a zip file under the releases tab
Using it in an editor
Have a look at the SwiftCode example project, or at the existing editor integrations (below). Alternatively, the communication protocol is outlined in the Protocol.org file in this repository.
SourceKittenDaemon is used in the company-sourcekit Emacs Swift plugin:
autocomplete-swift is a working Atom plugin offering Swift auto completion support via SourceKittenDaemon.
There's a working implementation for TextMate here.
This is a very simple, featureless reference implementation to see how to embed SourceKittenDaemon into an editor. It offers:
- Reading Xcode Projects
- Selecting / Editing / Saving files
- Getting completions for files either when you enter a "." or when you hit the ESC key.
This is a very simple editor and no sane person should try to write code with it. It is only meant to show how to embed the daemon.
SourceKittenDaemon is not Linux-Ready yet, but I'll investigate this in the next days. Also, since it is very dependent upon the SourceKitten and Taylor frameworks, it won't work under Linux until those have been ported, too. The background daemon, SourceKitD, is available as Open Source via Apple's Swift repository.
Byte offset vs character offset
X-Offset header takes a byte offset as opposed to a character
offset. For most characters this will make no difference. However special
characters such as
© are counted as two bytes is
UTF8. See this issue for more details.