feat(bindings/haskell): add more api#6264
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Xuanwo merged 12 commits intoapache:mainfrom Jun 10, 2025
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Pull Request Overview
Enhance Haskell bindings with writer, append, operator info, and remove-all APIs, and back them with new tests.
- Introduce new blocking FFI functions (
append,writer,writer_append,operator_info,remove_all) in Rust and expose them in the Haskell FFI. - Add high-level Haskell bindings (
Writer,WriterOption,defaultWriterOption,appendWriterOption,writerOpRaw,writerWrite,writerClose,operatorInfoRaw,removeAllOpRaw). - Expand the test suite with
WriterTest.hs,ErrorTest.hs,PerformanceTest.hs, updateBasicTest.hs,Spec.hs, and the cabal file.
Reviewed Changes
Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| bindings/haskell/src/lib.rs | Implement new FFI functions for append, writer creation, operator info, and remove-all |
| bindings/haskell/haskell-src/OpenDAL.hs | Expose the Writer API, options, and high-level functions to Haskell users |
| bindings/haskell/haskell-src/OpenDAL/FFI.hs | Add raw imports for the new FFI functions and define RawWriter |
| bindings/haskell/opendal.cabal | Register the new test modules in the test suite |
| bindings/haskell/test/WriterTest.hs | Add writer tests (sequential, large, empty, binary, append scenarios) |
| bindings/haskell/test/ErrorTest.hs | Add error-handling tests for read, stat, delete, copy, rename, list, config, monad |
| bindings/haskell/test/PerformanceTest.hs | Add performance benchmarks for bulk, writer vs direct write, large file, concurrency |
| bindings/haskell/test/BasicTest.hs | Extend basic tests to cover writer, append, lister, copy/rename, removeAll, info |
| bindings/haskell/test/Spec.hs | Register the new test groups in the overall suite |
Comments suppressed due to low confidence (1)
bindings/haskell/haskell-src/OpenDAL.hs:625
BS.useAsCStringLenand theByteStringtype aren’t in scope here. You should importData.ByteString (ByteString)andqualified Data.ByteString as BS, or switch to usingBS8.useAsCStringLenif you prefer the Char8 variant.
BS.useAsCStringLen byte $ \(cByte, len) ->
- Introduced `WriterOption` data type to specify write behavior (overwrite or append). - Updated `writerOpRaw` function to accept `WriterOption` for creating writers. - Replaced instances of `newWriter` and `newWriterAppend` with `writerOpRaw` in tests to utilize the new options. - Added default and append writer options for easier usage.
…usage in tests. Updated tests to demonstrate writing to files using the new writer functionality, ensuring compatibility with existing operations.
- Introduced `parseString` function to convert `CString` to `String`, improving memory management by freeing the original `CString`. - Updated `operatorInfoRaw` to utilize `parseString` instead of `peekCString`.
silver-ymz
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LGTM, thanks for your contribution
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Which issue does this PR close?
part of haskell binding (currently no issue)
Rationale for this change
What changes are included in this PR?
Are there any user-facing changes?