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Code Issues Packages 1 Wiki Activity

perf(serde_v8): preallocate vector when serializing arrays (#9955)

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Aaron O'Mullan 2021-04-04 15:04:35 +02:00 • committed by GitHub
parent e33e46e13b
commit 5f2a83f563
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1 changed files with 8 additions and 9 deletions
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17
serde_v8/src/ser.rs
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@ -103,13 +103,12 @@ pub struct ArraySerializer<'a, 'b, 'c> {
}
impl<'a, 'b, 'c> ArraySerializer<'a, 'b, 'c> {
pub fn new(scope: ScopePtr<'a, 'b, 'c>) -> Self {
// let serializer = Serializer::new(scope);
Self {
scope,
// serializer,
pending: vec![],
}
pub fn new(scope: ScopePtr<'a, 'b, 'c>, len: Option<usize>) -> Self {
let pending = match len {
Some(len) => Vec::with_capacity(len),
None => vec![],
};
Self { scope, pending }
}
}
@ -421,8 +420,8 @@ impl<'a, 'b, 'c> ser::Serializer for Serializer<'a, 'b, 'c> {
}
/// Serialises any Rust iterable into a JS Array
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
Ok(ArraySerializer::new(self.scope))
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
Ok(ArraySerializer::new(self.scope, len))
}
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {