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Implement FusedIterator for DecodeUtf16 when the inner iterator does #110729

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Oct 15, 2023
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Implement FusedIterator for DecodeUtf16 when the inner iterator does #110729

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4 changes: 4 additions & 0 deletions library/core/src/char/decode.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

use crate::error::Error;
use crate::fmt;
use crate::iter::FusedIterator;

/// An iterator that decodes UTF-16 encoded code points from an iterator of `u16`s.
///
Expand Down Expand Up @@ -105,6 +106,9 @@ impl<I: Iterator<Item = u16>> Iterator for DecodeUtf16<I> {
}
}

#[stable(feature = "decode_utf16_fused_iterator", since = "CURRENT_RUSTC_VERSION")]
impl<I: Iterator<Item = u16> + FusedIterator> FusedIterator for DecodeUtf16<I> {}

impl DecodeUtf16Error {
/// Returns the unpaired surrogate which caused this error.
#[must_use]
Expand Down