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mod se {
use crate::halfbrown::HashMap;
use core::hash::Hash;
use serde::ser::{Serialize, SerializeMap, Serializer};
impl<K, V> Serialize for HashMap<K, V>
where
K: Eq + Hash + Serialize,
V: Serialize,
{
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let mut map = serializer.serialize_map(Some(self.len()))?;
for (k, v) in self.iter() {
map.serialize_entry(k, v)?;
}
map.end()
}
}
}
mod de {
use crate::halfbrown::HashMap;
use core::hash::Hash;
use core::marker::PhantomData;
use serde::de::{Deserialize, Deserializer, MapAccess, Visitor};
use std::fmt;
mod size_hint {
use core::cmp;
#[inline]
pub(super) fn cautious(hint: Option<usize>) -> usize {
cmp::min(hint.unwrap_or(0), 4096)
}
}
impl<'de, K, V> Deserialize<'de> for HashMap<K, V>
where
K: Eq + Hash + Deserialize<'de>,
V: Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<HashMap<K, V>, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_any(HashMapVisitor {
marker: PhantomData,
})
}
}
struct HashMapVisitor<K, V>
where
K: Eq + Hash,
{
marker: PhantomData<HashMap<K, V>>,
}
impl<'de, K, V> Visitor<'de> for HashMapVisitor<K, V>
where
K: Eq + Hash + Deserialize<'de>,
V: Deserialize<'de>,
{
type Value = HashMap<K, V>;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("an Object/Map structure")
}
fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let size = size_hint::cautious(map.size_hint());
let mut m = HashMap::with_capacity(size);
while let Some(k) = map.next_key()? {
let v = map.next_value()?;
m.insert(k, v);
}
Ok(m)
}
}
}