[JExtract/JNI] Add support for async Swift methods#413
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ktoso
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Oct 29, 2025
ktoso
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ktoso
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ktoso
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This is looking very good, thanks!
ktoso
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0xZaph
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| if swiftFunctionResultType.isVoid { | ||
| printer.print("environment.interface.CallBooleanMethodA(environment, globalFuture, _JNIMethodIDCache.CompletableFuture.complete, [jvalue(l: nil)])") | ||
| } else { | ||
| printer.printBraceBlock("withVaList([SwiftJavaRuntimeSupport._JNIBoxedConversions.box(\(inner), in: environment)])") { printer in |
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On Android, I'm getting this compilation error:
withVaList([SwiftJavaRuntimeSupport._JNIBoxedConversions.box(resultBits$.getJNIValue(in: environment), in: environment)]) {
| `- error: cannot convert value of type 'jobject' (aka 'UnsafeMutableRawPointer') to expected element type 'any CVarArg'
This appears to originate from this code, though it compiles fine on Darwin. I'm not certain if this is an issue with my local Android sdk or not so just wanted to flag it.
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@0xZaph thanks for reporting this! seems like the issue is that the Android JNI imports jobjects as UnsafeRawMutablePointer, but that does not conform to CVarArg. And the "normal" JNI, imports it as OpaquePointer, which does.
I'll move away from withVaList, which also should fix swiftlang/swift-android-examples#15
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Adds support for extracting
asyncmethods from Swift.We use an upcall from Swift to Java to complete a
CompletableFutureAdditional changes:
SwiftKitSwifttoSwiftRuntimeFunctionsSwiftJavaRuntimeSupportfor runtime files needed by JExtract