westonpace commented on a change in pull request #9095:
URL: https://github.com/apache/arrow/pull/9095#discussion_r565980902
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File path: cpp/src/arrow/csv/reader.cc
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@@ -220,14 +238,36 @@ class ThreadedBlockReader : public BlockReader {
public:
using BlockReader::BlockReader;
- Result<arrow::util::optional<CSVBlock>> Next() {
+ static Iterator<util::optional<CSVBlock>> MakeIterator(
+ Iterator<std::shared_ptr<Buffer>> buffer_iterator,
std::unique_ptr<Chunker> chunker,
+ std::shared_ptr<Buffer> first_buffer) {
+ auto block_reader =
+ std::make_shared<ThreadedBlockReader>(std::move(chunker),
first_buffer);
+ // Wrap shared pointer in callable
+ Transformer<std::shared_ptr<Buffer>, util::optional<CSVBlock>>
block_reader_fn =
+ [block_reader](std::shared_ptr<Buffer> next) { return
(*block_reader)(next); };
+ return MakeTransformedIterator(std::move(buffer_iterator),
block_reader_fn);
+ }
+
+ static AsyncGenerator<util::optional<CSVBlock>> MakeAsyncIterator(
+ AsyncGenerator<std::shared_ptr<Buffer>> buffer_generator,
+ std::unique_ptr<Chunker> chunker, std::shared_ptr<Buffer> first_buffer) {
+ auto block_reader =
+ std::make_shared<ThreadedBlockReader>(std::move(chunker),
first_buffer);
+ // Wrap shared pointer in callable
+ Transformer<std::shared_ptr<Buffer>, util::optional<CSVBlock>>
block_reader_fn =
+ [block_reader](std::shared_ptr<Buffer> next) { return
(*block_reader)(next); };
+ return TransformAsyncGenerator(buffer_generator, block_reader_fn);
Review comment:
Fixed.
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