| use crate::HashMap; |
| use core::{ |
| borrow::Borrow, |
| hash::{BuildHasher, Hash}, |
| }; |
| use rkyv::{ |
| collections::hash_map::{ArchivedHashMap, HashMapResolver}, |
| ser::{ScratchSpace, Serializer}, |
| Archive, Deserialize, Fallible, Serialize, |
| }; |
| |
| impl<K: Archive + Hash + Eq, V: Archive, S> Archive for HashMap<K, V, S> |
| where |
| K::Archived: Hash + Eq, |
| { |
| type Archived = ArchivedHashMap<K::Archived, V::Archived>; |
| type Resolver = HashMapResolver; |
| |
| #[inline] |
| unsafe fn resolve(&self, pos: usize, resolver: Self::Resolver, out: *mut Self::Archived) { |
| ArchivedHashMap::resolve_from_len(self.len(), pos, resolver, out); |
| } |
| } |
| |
| impl<K, V, S, RandomState> Serialize<S> for HashMap<K, V, RandomState> |
| where |
| K: Serialize<S> + Hash + Eq, |
| K::Archived: Hash + Eq, |
| V: Serialize<S>, |
| S: Serializer + ScratchSpace + ?Sized, |
| { |
| #[inline] |
| fn serialize(&self, serializer: &mut S) -> Result<Self::Resolver, S::Error> { |
| unsafe { ArchivedHashMap::serialize_from_iter(self.iter(), serializer) } |
| } |
| } |
| |
| impl<K: Archive + Hash + Eq, V: Archive, D: Fallible + ?Sized, S: Default + BuildHasher> |
| Deserialize<HashMap<K, V, S>, D> for ArchivedHashMap<K::Archived, V::Archived> |
| where |
| K::Archived: Deserialize<K, D> + Hash + Eq, |
| V::Archived: Deserialize<V, D>, |
| { |
| #[inline] |
| fn deserialize(&self, deserializer: &mut D) -> Result<HashMap<K, V, S>, D::Error> { |
| let mut result = HashMap::with_capacity_and_hasher(self.len(), S::default()); |
| for (k, v) in self.iter() { |
| result.insert(k.deserialize(deserializer)?, v.deserialize(deserializer)?); |
| } |
| Ok(result) |
| } |
| } |
| |
| impl<K: Hash + Eq + Borrow<AK>, V, AK: Hash + Eq, AV: PartialEq<V>, S: BuildHasher> |
| PartialEq<HashMap<K, V, S>> for ArchivedHashMap<AK, AV> |
| { |
| #[inline] |
| fn eq(&self, other: &HashMap<K, V, S>) -> bool { |
| if self.len() != other.len() { |
| false |
| } else { |
| self.iter() |
| .all(|(key, value)| other.get(key).map_or(false, |v| value.eq(v))) |
| } |
| } |
| } |
| |
| impl<K: Hash + Eq + Borrow<AK>, V, AK: Hash + Eq, AV: PartialEq<V>> |
| PartialEq<ArchivedHashMap<AK, AV>> for HashMap<K, V> |
| { |
| #[inline] |
| fn eq(&self, other: &ArchivedHashMap<AK, AV>) -> bool { |
| other.eq(self) |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use crate::HashMap; |
| use alloc::string::String; |
| use rkyv::{ |
| archived_root, check_archived_root, |
| ser::{serializers::AllocSerializer, Serializer}, |
| Deserialize, Infallible, |
| }; |
| |
| #[test] |
| fn index_map() { |
| let mut value = HashMap::new(); |
| value.insert(String::from("foo"), 10); |
| value.insert(String::from("bar"), 20); |
| value.insert(String::from("baz"), 40); |
| value.insert(String::from("bat"), 80); |
| |
| let mut serializer = AllocSerializer::<4096>::default(); |
| serializer.serialize_value(&value).unwrap(); |
| let result = serializer.into_serializer().into_inner(); |
| let archived = unsafe { archived_root::<HashMap<String, i32>>(result.as_ref()) }; |
| |
| assert_eq!(value.len(), archived.len()); |
| for (k, v) in value.iter() { |
| let (ak, av) = archived.get_key_value(k.as_str()).unwrap(); |
| assert_eq!(k, ak); |
| assert_eq!(v, av); |
| } |
| |
| let deserialized: HashMap<String, i32> = archived.deserialize(&mut Infallible).unwrap(); |
| assert_eq!(value, deserialized); |
| } |
| |
| #[test] |
| fn validate_index_map() { |
| let mut value = HashMap::new(); |
| value.insert(String::from("foo"), 10); |
| value.insert(String::from("bar"), 20); |
| value.insert(String::from("baz"), 40); |
| value.insert(String::from("bat"), 80); |
| |
| let mut serializer = AllocSerializer::<4096>::default(); |
| serializer.serialize_value(&value).unwrap(); |
| let result = serializer.into_serializer().into_inner(); |
| check_archived_root::<HashMap<String, i32>>(result.as_ref()) |
| .expect("failed to validate archived index map"); |
| } |
| } |