nim-ffi/examples/timer/ios/Package.swift
Ivan FB 014e1618ba
docs(examples): add iOS (Swift) example over the native C ABI
A SwiftPM package wrapping the timer library's native ABI behind an idiomatic
`TimerNode` Swift class. `build-xcframework.sh` cross-compiles the Nim library
to a static MyTimer.xcframework with three slices — ios-arm64 (device),
ios-arm64-simulator, and macos-arm64 — assembling the .xcframework by hand so it
works without a functioning Simulator toolchain (CI-friendly).

The wrapper bridges the async FFI-thread callback to a synchronous Swift API
with a semaphore and reads the typed EchoResponse struct out of the callback.
The macos-arm64 slice makes the wrapper testable on the host: `swift test`
passes against it. Device/simulator slices are the real iOS deployment artifacts.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-05-31 18:37:19 +02:00

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Swift

// swift-tools-version:5.9
import PackageDescription
// SwiftPM package wrapping the timer library for iOS (and macOS, so the Swift
// wrapper is testable on the host with `swift test`).
//
// `MyTimer.xcframework` is produced by ./build-xcframework.sh and bundles the
// static library for ios-arm64 (device), ios-arm64-simulator, and macos-arm64,
// each with the C headers + module map. Run the build script before
// `swift build` / `swift test`.
let package = Package(
name: "MyTimer",
platforms: [.iOS(.v13), .macOS(.v12)],
products: [
.library(name: "MyTimer", targets: ["MyTimer"])
],
targets: [
.binaryTarget(name: "CMyTimer", path: "MyTimer.xcframework"),
.target(name: "MyTimer", dependencies: ["CMyTimer"]),
.testTarget(name: "MyTimerTests", dependencies: ["MyTimer"]),
]
)