Mapping a struct return type

[castortech]

I have a C function that returns a struct such as (and also other variants)

@JniClass(flags = { STRUCT, TYPEDEF })
public static class MDBX_aah_result_t {
	@JniField(cast = "MDBX_aah_t")
	public long aah;
	@JniField(cast = "MDBX_error_t")
	public int err;
}

That doesn't seem to be supported as per the following error:

#error Warning: bad return type. :public static final native JNI$MDBX_aah_result_t JNI.mdbx_aa_open(long,java.lang.String,long,long,long)

while the documentation states:

Structure and Union arguments/return values

So what is the best way to handle this. Was thinking of returning a byte array but concerned that since many member types can have varying size that would force me to capture many sizeof.

[acheong08]

@castortech Have you been able to work around this? Also hitting the same issue

[acheong08]

I just needed a coordinate (x,z). I did this unholy fuck:

long long getNearestStructure(int structType, int x, int z, uint64_t seed, int mc, int searchSize) {
...
return ((long long)bestPos.x << 32) | (bestPos.z & 0xffffffffL);
}

long result = getNearestStructure(structType, x, z, seed, mc_version, searchSize);
		if (result == 0) {
			return null;
		}
		Pos pos = new Pos();
		pos.x = (int) (result >> 32);
		pos.z = (int) (result & 0xFFFFFFFF);
		return pos;

[castortech]

@castortech Have you been able to work around this? Also hitting the same issue

Hacked my way around it as well.

[gptlang]

Hacked my way around it as well.

May I ask how you did it? My workarounds don't feel very elegant