paleolimbot commented on code in PR #143:
URL: https://github.com/apache/arrow-nanoarrow/pull/143#discussion_r1129451619
##########
extensions/nanoarrow_ipc/src/nanoarrow/nanoarrow_ipc.c:
##########
@@ -785,5 +876,261 @@ ArrowErrorCode ArrowIpcReaderDecode(struct
ArrowIpcReader* reader,
return EINVAL;
}
+ private_data->last_message = message_header;
+ return NANOARROW_OK;
+}
+
+ArrowErrorCode ArrowIpcReaderGetSchema(struct ArrowIpcReader* reader,
+ struct ArrowSchema* out,
+ struct ArrowError* error) {
+ struct ArrowIpcReaderPrivate* private_data =
+ (struct ArrowIpcReaderPrivate*)reader->private_data;
+
+ if (private_data->schema.release == NULL) {
+ ArrowErrorSet(error, "reader does not contain a valid schema");
+ return EINVAL;
+ }
+
+ ArrowSchemaMove(&private_data->schema, out);
Review Comment:
Until there's a code path where the decoder needs a copy of the schema for
something, probably a move? Strictly speaking, the decoder just needs to "see"
the schema once and doesn't need to refer to it again.
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