Running Swift From Rust about swift-bridge HOT 4 CLOSED

Hey very sorry for the delay, July 21-Aug 1 is super hectic for me and then I'll be back to normal once I settle back in.

The book seems to focus heavily on calling Rust FROM Swift but not the other way around.

Yup totally. The reason for this is that my current use case mainly involves calling Rust from Swift, so I've mainly focused on supporting and writing documentation for that use case.

That being said we also want swift-bridge to make it easy to call Swift from Rust so I'd love to help with anything that you need here.

So you're trying to compile a Swift native library and then link to it from Rust?

If so, there's a very tiny example of this in the book right now (we still need to write a deeper walkthrough) https://github.com/chinedufn/swift-bridge/blob/a78e617ffbb9471224c4ee79a6e42f0498ed4c43/book/src/building/swiftc-and-cargo/README.md#rust-links-to-a-swift-native-library

You don't need to annotate Swift code to call it from Rust. swift-bridge generates the FFI bridge for you.

For example, here we test the generated code for a Swift function that takes a Swift class instance as an argument:

I'm assuming there's some sort of build/compile step I'm missing with Swift to generate the needed header files that I may have just missed in the docs?

Yup it's that little blurb from the first link where you use the swift-bridge API or CLI to generate the header files. The CLI command doesn't exist yet, but I can add it for you if you need it (or give you step by step instructions on how to do it if you'd like to make a first contribution!)

Let me know if that helps.

I'd love to help make sure that all of your problems get solved here.

Our approach has been to add documentation as we go.. so once we get you sorted out I'll add some docs on this before closing out this issue.

Cheers!

from swift-bridge.

I'm working on a full example of a Rust binary that calls a Swift library

from swift-bridge.

Update: I have a working example. Now I need to clean it up.

from swift-bridge.

Whipped up an example of a Rust binary that calls a Swift package in #104

You can view the example here -> https://github.com/chinedufn/swift-bridge/tree/23d60feaa0f8e92f2c854d8665868aa5573ef505/examples/rust-binary-calls-swift-package

Please feel free to re-open this if this example isn't enough for your use case.

Cheers!

from swift-bridge.