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https://github.com/igor-makarov/swift-ffi

Demo for exporting Swift code to use with Ruby FFI
https://github.com/igor-makarov/swift-ffi

Last synced: about 1 month ago
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Demo for exporting Swift code to use with Ruby FFI

Host: GitHub
URL: https://github.com/igor-makarov/swift-ffi
Owner: igor-makarov
Created: 2020-01-28T08:25:29.000Z (over 4 years ago)
Default Branch: master
Last Pushed: 2020-01-28T10:07:03.000Z (over 4 years ago)
Last Synced: 2024-04-04T18:32:05.075Z (6 months ago)
Language: Swift
Size: 5.86 KB
Stars: 11
Watchers: 1
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md

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README

        # swift-ffi

[![Travis (.org)](https://img.shields.io/travis/igor-makarov/swift-ffi?style=flat-square)](https://travis-ci.com/igor-makarov/swift-ffi)

Shows how to use Swift code in a Ruby FFI.

See [swift_ffi.swift](Sources/swift-ffi/swift_ffi.swift) for the Swift code and [run.rb](run.rb) for the Ruby code.

The Swift code is exported as free functions using `@_cdecl` attribute. It's a little undocumented, but will probably be canonized at some point.  

### Note:

The string function `swift_ffi_duplicate_string` returns a 'fresh' string, which means the dealloc is the responsibility of the Ruby code in this case. The Ruby code copies and frees the string before exposing it.  Different C API design might have different constraints.