KMP の Swift export

extension DC 2025 Day2 @Sansan

※ 2025/10/2 現在、Swift export のステータスは experimental です

Transcript

1. KMP ͷ Swift export 2025/10/2 extension DC 2025 Day2 @Sansan Koki Hirokawa
2. @pihero13 KokiHirokawa Sony Honda Mobility Inc. 1
3. Swift export ͱ͸ Experimental Objective-C Λհͣ͞ʹ Swift ͔Β Kotlin Ͱॻ͔ΕͨॲཧΛݺͼग़ͨ͢Ίͷٕज़ 2
4. ΞδΣϯμ KMP ͱ͸ Objective-C export ͱ͸ Swift export ͱ͸ Objective-C export ͱ Swift export ͷҧ͍ ·ͱΊ 3
5. KMP ͱ͸
6. KMP - ֓ཁ Kotlin Multiplatform KMP Λ࢖༻͢ΔͱҟͳΔϓϥοτϑΥʔϜؒͰ Kotlin ίʔυΛڞ༗Ͱ͖Δ 5
7. KMP - ରԠϓϥοτϑΥʔϜ Android JVM iOS macOS Linux ... 6
8. Objective-C export ͱ͸
9. KMP - Apple platform 8
10. KMP - Apple platform 9
11. KMP - Apple platform 10
12. KMP - Apple platform 11
13. Objective-C header 12
14. Objective-C header 13
15. Objective-C export 14
16. Objective-C export Objective-C ͷϔομʔΛಡΉඞཁ͕͋Δ ͢΂ͯͷ I/F ͕1ͭͷϔομʔʹ·ͱ·Δ Swift Β͘͠ͳ͍ API ͕ఏڙ͞ΕΔ͜ͱ͕͋Δ γʔϜϨεʹ౷߹Ͱ͖ͳ͍ 15
17. Swift export ͱ͸
18. Swift export Experimental 17
19. Swift export Experimental Kotlin Multiplatform Development Roadmap for 2024 ϩʔυϚοϓʹొ৔ 18
20. Swift export Experimental Kotlin Multiplatform Development Roadmap for 2024 ϩʔυϚοϓʹొ৔ Kotlin Multiplatform Development Roadmap for 2025 ٸϐονͰ։ൃத 2025೥ͷ໨ඪ͸࠷ॳͷެ։൛ϦϦʔε 19
21. Swift export Experimental Kotlin Multiplatform Development Roadmap for 2024 ϩʔυϚοϓʹొ৔ Kotlin Multiplatform Development Roadmap for 2025 ٸϐονͰ։ൃத 2025೥ͷ໨ඪ͸࠷ॳͷެ։൛ϦϦʔε Kotlin 2.1.0 ॳظஈ֊ͷެ։ 20
22. Swift export Experimental What’s Next for Kotlin Multiplatform and Compose Multiplatform – August 2025 Update suspend function ΍ Flow ͱ͍ͬͨඇಉظॲཧͷαϙʔτ 2026೥ʹ҆ఆ൛ͷϦϦʔεΛ໨ࢦ͢ 21
23. Swift export Experimental What’s Next for Kotlin Multiplatform and Compose Multiplatform – August 2025 Update suspend function ΍ Flow ͱ͍ͬͨඇಉظॲཧͷαϙʔτ 2026೥ʹ҆ఆ൛ͷϦϦʔεΛ໨ࢦ͢ Kotlin 2.2.20 Experimental support 22
24. Swift export ͷ։ൃঢ়گ Experimental https://docs.google.com/spreadsheets/d/ 157wQt05ZyaJAP_P1wigXDs6nW9q7clqbpIDAfMrFhOg/ 23
25. Objective-C export ͱ Swift export ͷҧ͍
26. Top-level function Experimental Kotlin // Common.kt fun sharedFunction(): Int = 5 Objective-C export import Shared CommonKt.sharedFunction() Swift export import Shared sharedFunction() 25
27. Multi-module support Experimental Kotlin // Common.kt (Shared) fun sharedFunction(): Int = 5 // Common.kt (module-a) fun sharedFunction(): Int = 10 Objective-C export import Shared CommonKt.sharedFunction() CommonKt_.sharedFunction() Swift export import Shared import ModuleA Shared.sharedFunction() ModuleA.sharedFunction() 26
28. Multi-module support Experimental Objective-C export // Shared.h __attribute__((objc_subclassing_restricted)) __attribute__((swift_name("CommonKt"))) @interface SharedCommonKt : SharedBase + (int32_t)sharedFunction __attribute__((swift_name("sharedFunction()" ))); @end __attribute__((objc_subclassing_restricted)) __attribute__((swift_name("CommonKt_"))) @interface SharedCommonKt_ : SharedBase + (int32_t)sharedFunction __attribute__((swift_name("sharedFunction()" ))); @end Swift export // Shared.swift public func sharedFunction() -> Swift.Int32 { ExportedKotlinPackages.com.github.jetbrains. swiftexport.sharedFunction() } // ModuleA.swift public func sharedFunction() -> Swift.Int32 { ExportedKotlinPackages.com.github.jetbrains. modulea.sharedFunction() } 27
29. Package support Experimental Kotlin // MODULE: shared // FILE: Common.kt package com.github.jetbrains.swiftexport fun sharedFunction(): Int = 5 // MODULE: shared // FILE: Common.kt package com.github.jetbrains.swiftexport.packagea fun sharedFunction(): Int = 10 28
30. Package support Experimental Objective-C export import Shared CommonKt.sharedFunction() CommonKt.sharedFunction_() Swift export import Shared sharedFunction() packagea.sharedFunction() 29
31. Package support Experimental // ExportedKotlinPackages.swift public enum com { public enum github { public enum jetbrains { public enum swiftexport { public enum packagea { } } } } } 30
32. Swift export ͷࢼ͠ํ Experimental // build.gradle.kts @OptIn(ExperimentalSwiftExportDsl::class) swiftExport { // Root module name moduleName = "Shared" // Collapse rule flattenPackage = "com.github.jetbrains.swiftexport" } // Run Script Phase ./gradlew :shared:embedSwiftExportForXcode 31
33. Swift export ͷࢼ͠ํ Experimental https://github.com/Kotlin/swift-export-sample kotlin version Λ 2.2.20 ʹมߋ 32
34. ·ͱΊ
35. ·ͱΊ Swift ͔Β Kotlin Ͱॻ͔ΕͨॲཧΛݺͼग़͢ʹ͸ Objective-C Λհ͢Δඞཁ͕͋Δ Objective-C export Objective-C Λհ͞ͳ͍ Swift export ͕։ൃத Experimental Apple platform Ͱͷ KMP Λ࢖ͬͨ։ൃऀମݧ͕޲্͢ΔݟࠐΈ 34