A (very dirty) configuration example of Project Panama.
automatic resource mgmt example
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app/src/main/kotlin/App.kt
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app/src/main/kotlin/App.kt
···
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import org.example.interop.ExternStruct
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import org.example.interop.RustApi
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import org.example.interop.jvm_interop_h
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import java.lang.foreign.Arena
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// if IDEA or Kotlin LSP is scared, run ./gradlew :interop-panama:generateJextractBindings.
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// jvm_interop_h is a jextract-generated class.
···
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val yFromRust = ExternStruct.y(struct)
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println("Rust owns these. x: $xFromRust, y: $yFromRust. also, xy = nice!")
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jvm_interop_h.extern_struct_free(struct) // remember to clean after yourself!
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// or we can rely on automatic scope-based resource management
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val arena = Arena.ofConfined()
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arena.use { arena ->
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val struct2 = ExternStruct.allocate(arena)
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ExternStruct.x(struct2, 1234)
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ExternStruct.y(struct2, 103)
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println("${ExternStruct.x(struct2) + ExternStruct.y(struct2)} using automated cleanup")
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}
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}