duckdb-ffi-1.5.3.0: cbits/duckdb_arrow.h

#ifndef DUCKDB_HASKELL_ARROW_H
#define DUCKDB_HASKELL_ARROW_H

#include <stdint.h>

// Arrow C Data Interface structures used by the deprecated DuckDB API.
struct ArrowSchema {
  const char *format;
  const char *name;
  const char *metadata;
  int64_t flags;
  int64_t n_children;
  struct ArrowSchema **children;
  struct ArrowSchema *dictionary;
  void (*release)(struct ArrowSchema *);
  void *private_data;
};

struct ArrowArray {
  int64_t length;
  int64_t null_count;
  int64_t offset;
  int64_t n_buffers;
  int64_t n_children;
  const void **buffers;
  struct ArrowArray **children;
  struct ArrowArray *dictionary;
  void (*release)(struct ArrowArray *);
  void *private_data;
};

struct ArrowArrayStream {
  int (*get_schema)(struct ArrowArrayStream *, struct ArrowSchema *);
  int (*get_next)(struct ArrowArrayStream *, struct ArrowArray *);
  const char *(*get_last_error)(struct ArrowArrayStream *);
  void (*release)(struct ArrowArrayStream *);
  void *private_data;
};

#endif