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Implement size_hint function for SeqVisitor and MapVisitor #65

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Merged
merged 1 commit into from
Jul 3, 2016
Merged

Implement size_hint function for SeqVisitor and MapVisitor #65

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8 changes: 8 additions & 0 deletions rmp-serde/src/decode.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -441,6 +441,10 @@ impl<'a, R: Read + 'a> serde::de::SeqVisitor for SeqVisitor<'a, R> {
Err(Error::LengthMismatch(self.actual))
}
}

fn size_hint(&self) -> (usize, Option<usize>) {
(self.actual as usize, Some(self.actual as usize))
}
}

struct MapVisitor<'a, R: Read + 'a> {
Expand Down Expand Up @@ -478,6 +482,10 @@ impl<'a, R: Read + 'a> serde::de::MapVisitor for MapVisitor<'a, R> {
Err(Error::LengthMismatch(self.actual))
}
}

fn size_hint(&self) -> (usize, Option<usize>) {
(self.actual as usize, Some(self.actual as usize))
}
}

/// Default variant visitor.
Expand Down