alef-backend-java 0.16.21

    public static ConversionResult convertWithVisitor(String html, ConversionOptions options, Visitor visitor) throws {{ exception_class }} {
        try (var arena = Arena.ofShared();
             var bridge = new VisitorBridge(visitor)) {
            var cHtml = arena.allocateFrom(html);

            MemorySegment optionsPtr = MemorySegment.NULL;
            if (options != null) {
                var optJson = arena.allocateFrom(MAPPER.writeValueAsString(options));
                optionsPtr = (MemorySegment) NativeLib.{{ prefix_upper }}_CONVERSION_OPTIONS_FROM_JSON.invoke(optJson);
            }

            var visitorHandle = (MemorySegment) NativeLib.{{ prefix_upper }}_VISITOR_CREATE.invoke(bridge.callbacksStruct());
            if (visitorHandle.equals(MemorySegment.NULL)) {
                throw new {{ exception_class }}("Failed to create visitor handle", null);
            }

            try {
                var resultPtr = (MemorySegment) NativeLib.{{ prefix_upper }}_CONVERT_WITH_VISITOR.invoke(cHtml, optionsPtr, visitorHandle);
                if (!optionsPtr.equals(MemorySegment.NULL)) {
                    NativeLib.{{ prefix_upper }}_CONVERSION_OPTIONS_FREE.invoke(optionsPtr);
                }
                if (resultPtr.equals(MemorySegment.NULL)) {
                    checkLastError();
                    return null;
                }
                var markdown = resultPtr.reinterpret(Long.MAX_VALUE).getString(0);
                NativeLib.{{ prefix_upper }}_FREE_STRING.invoke(resultPtr);
                return new ConversionResult(markdown, null, null, null, null, null);
            } catch (Throwable e) {
                throw new {{ exception_class }}("FFI call failed", e);
            } finally {
                NativeLib.{{ prefix_upper }}_VISITOR_FREE.invoke(visitorHandle);
                bridge.rethrowVisitorError();
            }
        } catch ({{ exception_class }} e) {
            throw e;
        } catch (Throwable e) {
            throw new {{ exception_class }}("FFI call failed", e);
        }
    }