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Make sure Found{Hosts, Addrs} have is_empty and len methods #316

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Make sure Found{Hosts, Addrs} have is_empty and len methods #316

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8 changes: 8 additions & 0 deletions src/resolv/lookup/addr.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,14 @@ pub async fn lookup_addr<R: Resolver>(
pub struct FoundAddrs<R: Resolver>(R::Answer);

impl<R: Resolver> FoundAddrs<R> {
pub fn is_empty(&self) -> bool {
self.len() == 0
}

pub fn len(&self) -> usize {
self.0.as_ref().header_counts().ancount() as usize
}

/// Returns an iterator over the host names.
pub fn iter(&self) -> FoundAddrsIter<'_, R::Octets>
where
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14 changes: 14 additions & 0 deletions src/resolv/lookup/host.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,20 @@ impl<R: Resolver> FoundHosts<R> {
true
}

pub fn len(&self) -> usize {
let aaaa = self
.aaaa
.as_ref()
.map_or(0, |m| m.as_ref().header_counts().ancount());

let a = self
.a
.as_ref()
.map_or(0, |m| m.as_ref().header_counts().ancount());

(aaaa + a) as usize
}

/// Returns a reference to one of the answers.
fn answer(&self) -> &R::Answer {
match self.aaaa.as_ref() {
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