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use crate::{
collections::btree_map::{ArchivedBTreeMap, BTreeMapResolver},
ser::Serializer,
Archive, Deserialize, Fallible, Serialize,
};
#[cfg(not(feature = "std"))]
use alloc::collections::BTreeMap;
#[cfg(feature = "std")]
use std::collections::BTreeMap;
impl<K: Archive + Ord, V: Archive> Archive for BTreeMap<K, V>
where
K::Archived: Ord,
{
type Archived = ArchivedBTreeMap<K::Archived, V::Archived>;
type Resolver = BTreeMapResolver;
#[inline]
unsafe fn resolve(&self, pos: usize, resolver: Self::Resolver, out: *mut Self::Archived) {
ArchivedBTreeMap::resolve_from_len(self.len(), pos, resolver, out);
}
}
impl<K: Serialize<S> + Ord, V: Serialize<S>, S: Serializer + ?Sized> Serialize<S> for BTreeMap<K, V>
where
K::Archived: Ord,
{
#[inline]
fn serialize(&self, serializer: &mut S) -> Result<Self::Resolver, S::Error> {
unsafe { ArchivedBTreeMap::serialize_from_reverse_iter(self.iter().rev(), serializer) }
}
}
impl<K: Archive + Ord, V: Archive, D: Fallible + ?Sized> Deserialize<BTreeMap<K, V>, D>
for ArchivedBTreeMap<K::Archived, V::Archived>
where
K::Archived: Deserialize<K, D> + Ord,
V::Archived: Deserialize<V, D>,
{
#[inline]
fn deserialize(&self, deserializer: &mut D) -> Result<BTreeMap<K, V>, D::Error> {
let mut result = BTreeMap::new();
for (key, value) in self.iter() {
result.insert(
key.deserialize(deserializer)?,
value.deserialize(deserializer)?,
);
}
Ok(result)
}
}
impl<K, V, AK: PartialEq<K>, AV: PartialEq<V>> PartialEq<BTreeMap<K, V>>
for ArchivedBTreeMap<AK, AV>
{
#[inline]
fn eq(&self, other: &BTreeMap<K, V>) -> bool {
if self.len() != other.len() {
false
} else {
self.iter()
.zip(other.iter())
.all(|(a, b)| a.0.eq(b.0) && a.1.eq(b.1))
}
}
}
impl<K, V, AK: PartialEq<K>, AV: PartialEq<V>> PartialEq<ArchivedBTreeMap<AK, AV>>
for BTreeMap<K, V>
{
#[inline]
fn eq(&self, other: &ArchivedBTreeMap<AK, AV>) -> bool {
other.eq(self)
}
}