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stream: Fix Chunk adapters size hints #2611

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merged 1 commit into from Jun 6, 2022
Merged

stream: Fix Chunk adapters size hints #2611

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2 changes: 1 addition & 1 deletion futures-util/src/stream/stream/chunks.rs
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Expand Up @@ -79,7 +79,7 @@ impl<St: Stream> Stream for Chunks<St> {
fn size_hint(&self) -> (usize, Option<usize>) {
let chunk_len = if self.items.is_empty() { 0 } else { 1 };
let (lower, upper) = self.stream.size_hint();
let lower = lower.saturating_add(chunk_len);
let lower = (lower / self.cap).saturating_add(chunk_len);
let upper = match upper {
Some(x) => x.checked_add(chunk_len),
None => None,
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2 changes: 1 addition & 1 deletion futures-util/src/stream/stream/ready_chunks.rs
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Expand Up @@ -87,7 +87,7 @@ impl<St: Stream> Stream for ReadyChunks<St> {
fn size_hint(&self) -> (usize, Option<usize>) {
let chunk_len = if self.items.is_empty() { 0 } else { 1 };
let (lower, upper) = self.stream.size_hint();
let lower = lower.saturating_add(chunk_len);
let lower = (lower / self.cap).saturating_add(chunk_len);
let upper = match upper {
Some(x) => x.checked_add(chunk_len),
None => None,
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2 changes: 1 addition & 1 deletion futures-util/src/stream/try_stream/try_chunks.rs
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Expand Up @@ -84,7 +84,7 @@ impl<St: TryStream> Stream for TryChunks<St> {
fn size_hint(&self) -> (usize, Option<usize>) {
let chunk_len = if self.items.is_empty() { 0 } else { 1 };
let (lower, upper) = self.stream.size_hint();
let lower = lower.saturating_add(chunk_len);
let lower = (lower / self.cap).saturating_add(chunk_len);
let upper = match upper {
Some(x) => x.checked_add(chunk_len),
None => None,
Expand Down