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feat(data): expose CandleReader (CSV) natively in all 10 languages (#311)

Browse Source 
Add the data-layer CSV candle reader to every binding so loading OHLCV
candles from a CSV no longer needs a per-language CSV/dataframe dependency.

- C ABI: wickra_candle_reader_new(bytes, len) / _count / _read / _free over
  an opaque CandleReader handle (parse the whole buffer up front, then drain).
- Native: Node/WASM CandleReader.read() -> Candle[], Python read() -> list[tuple].
- C-ABI languages: Go Read() []Candle, C# Candle[] Read(), Java Candle[] read(),
  R read() S3 generic (n x 6 matrix); C / C++ call the C ABI directly.
- Cross-language golden testdata/golden/data_csv*.csv pins the parsed candles
  bit-for-bit across every binding.

Verified locally across Rust (test+clippy+fmt), Node, WASM, Python, C#, Go,
Java, R, and the C/C++ cmake parity suite.
This commit is contained in:
kingchenc
2026-06-16 00:10:58 +02:00
committed by GitHub
parent cb6da4d737
commit d362ae26a3
31 changed files with 867 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
testdata/golden/data_csv.csv
Vendored
+81
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@@ -0,0 +1,81 @@
timestamp,open,high,low,close,volume
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1 timestamp open high low close volume
2 0 99 101 98 100 1000
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