alef-backend-java 0.15.21

Java (Panama FFM) backend for alef
Documentation 
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    private static void checkLastError() throws Throwable {
        int errCode = (int) NativeLib.{{ prefix_upper }}_LAST_ERROR_CODE.invoke();
        if (errCode != 0) {
            var ctxPtr = (MemorySegment) NativeLib.{{ prefix_upper }}_LAST_ERROR_CONTEXT.invoke();
            String msg = ctxPtr.reinterpret(Long.MAX_VALUE).getString(0);
            switch (errCode) {
                case 1 -> throw new InvalidInputException(msg);
                case 2 -> throw new ConversionErrorException(msg);
                default -> throw new {{ class_name }}Exception(errCode, msg);
            }
        }
    }