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// Magic number for the Rust proxy to call using the same mechanism as every other method,
// to free the callback once it's dropped by Rust.
internal const val IDX_CALLBACK_FREE = 0
// Callback return codes
internal const val UNIFFI_CALLBACK_SUCCESS = 0
internal const val UNIFFI_CALLBACK_ERROR = 1
internal const val UNIFFI_CALLBACK_UNEXPECTED_ERROR = 2
public abstract class FfiConverterCallbackInterface<CallbackInterface: Any>: FfiConverter<CallbackInterface, Long> {
internal val handleMap = UniffiHandleMap<CallbackInterface>()
internal fun drop(handle: Long) {
handleMap.remove(handle)
}
override fun lift(value: Long): CallbackInterface {
return handleMap.get(value)
}
override fun read(buf: ByteBuffer) = lift(buf.getLong())
override fun lower(value: CallbackInterface) = handleMap.insert(value)
override fun allocationSize(value: CallbackInterface) = 8UL
override fun write(value: CallbackInterface, buf: ByteBuffer) {
buf.putLong(lower(value))
}
}
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