mkarbo commented on code in PR #7535:
URL: https://github.com/apache/arrow-rs/pull/7535#discussion_r2104122900
##########
parquet-variant/src/utils.rs:
##########
@@ -0,0 +1,42 @@
+use std::{array::TryFromSliceError, ops::Range};
+
+use arrow_schema::ArrowError;
+
+#[inline]
+pub(crate) fn slice_from_slice(bytes: &[u8], range: Range<usize>) ->
Result<&[u8], ArrowError> {
+ bytes.get(range.clone()).ok_or_else(|| {
+ ArrowError::InvalidArgumentError(format!(
+ "Tried to extract {} bytes at offset {} from {}-byte buffer",
+ range.end - range.start,
+ range.start,
+ bytes.len(),
+ ))
+ })
+}
+pub(crate) fn array_from_slice<const N: usize>(
+ bytes: &[u8],
+ offset: usize,
+) -> Result<[u8; N], ArrowError> {
+ let bytes = slice_from_slice(bytes, offset..offset + N)?;
+ bytes.try_into().map_err(map_try_from_slice_error)
+}
+
+/// To be used in `map_err` when unpacking an integer from a slice of bytes.
+pub(crate) fn map_try_from_slice_error(e: TryFromSliceError) -> ArrowError {
+ ArrowError::InvalidArgumentError(e.to_string())
+}
+
+pub(crate) fn non_empty_slice(slice: &[u8]) -> Result<&[u8], ArrowError> {
+ if slice.is_empty() {
+ return Err(ArrowError::InvalidArgumentError(
+ "Received empty bytes".to_string(),
+ ));
+ } else {
+ return Ok(slice);
+ }
Review Comment:
Yes, has to return `Result<&u8, ArrowError>` but that worked fine as well.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
