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[JExtract/FFM] Bridge Optional parameters #320

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Merged
merged 2 commits into from
Jul 16, 2025

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@rintaro rintaro commented Jul 15, 2025

  • Non primitive types, e.g. arg: MySwiftTy?
    • CDecl: type UnsafeRawPointer? conversion arg?.assumingMemoryBound(to: MySwiftTy.self).pointee
    • Java: type Optional<MySwiftTy>, conversion: arg.map((val) -> val.$memorySegment()).orElse(MemorySegment.NULL)
  • Primitive types, e.g. arg: Int?
    • CDecl: type UnsafePointer<Int>?conversion arg?.pointee
    • Java: type OptionalLong conversion: arg.isPresent() ? arena.allocateFrom(ValueLayout.JAVA_LONG, arg.getAsLong()) : MemorySegment.NULL;
  • Pointer types, e.g. arg: UnsafePointer?
    • Not supported, yet.

@rintaro rintaro force-pushed the jextract-optional-parameter branch from 2094332 to 92cbb5e Compare July 15, 2025 23:08
@rintaro rintaro force-pushed the jextract-optional-parameter branch from 92cbb5e to 2fe946e Compare July 15, 2025 23:27
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@ktoso ktoso left a comment

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Looks great, thank you 👍

@ktoso ktoso merged commit 19a6785 into swiftlang:main Jul 16, 2025
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@rintaro rintaro deleted the jextract-optional-parameter branch July 16, 2025 03:41
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2 participants