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Diffstat (limited to 'vendor/indexmap/src/serde.rs')
| -rw-r--r-- | vendor/indexmap/src/serde.rs | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/vendor/indexmap/src/serde.rs b/vendor/indexmap/src/serde.rs deleted file mode 100644 index 25546d53..00000000 --- a/vendor/indexmap/src/serde.rs +++ /dev/null @@ -1,166 +0,0 @@ -#![cfg_attr(docsrs, doc(cfg(feature = "serde")))] - -use serde::de::value::{MapDeserializer, SeqDeserializer}; -use serde::de::{ - Deserialize, Deserializer, Error, IntoDeserializer, MapAccess, SeqAccess, Visitor, -}; -use serde::ser::{Serialize, Serializer}; - -use core::fmt::{self, Formatter}; -use core::hash::{BuildHasher, Hash}; -use core::marker::PhantomData; -use core::{cmp, mem}; - -use crate::{Bucket, IndexMap, IndexSet}; - -/// Limit our preallocated capacity from a deserializer `size_hint()`. -/// -/// We do account for the `Bucket` overhead from its saved `hash` field, but we don't count the -/// `RawTable` allocation or the fact that its raw capacity will be rounded up to a power of two. -/// The "max" is an arbitrary choice anyway, not something that needs precise adherence. -/// -/// This is based on the internal `serde::de::size_hint::cautious(hint)` function. -pub(crate) fn cautious_capacity<K, V>(hint: Option<usize>) -> usize { - const MAX_PREALLOC_BYTES: usize = 1024 * 1024; - - cmp::min( - hint.unwrap_or(0), - MAX_PREALLOC_BYTES / mem::size_of::<Bucket<K, V>>(), - ) -} - -impl<K, V, S> Serialize for IndexMap<K, V, S> -where - K: Serialize, - V: Serialize, -{ - fn serialize<T>(&self, serializer: T) -> Result<T::Ok, T::Error> - where - T: Serializer, - { - serializer.collect_map(self) - } -} - -struct IndexMapVisitor<K, V, S>(PhantomData<(K, V, S)>); - -impl<'de, K, V, S> Visitor<'de> for IndexMapVisitor<K, V, S> -where - K: Deserialize<'de> + Eq + Hash, - V: Deserialize<'de>, - S: Default + BuildHasher, -{ - type Value = IndexMap<K, V, S>; - - fn expecting(&self, formatter: &mut Formatter<'_>) -> fmt::Result { - write!(formatter, "a map") - } - - fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error> - where - A: MapAccess<'de>, - { - let capacity = cautious_capacity::<K, V>(map.size_hint()); - let mut values = IndexMap::with_capacity_and_hasher(capacity, S::default()); - - while let Some((key, value)) = map.next_entry()? { - values.insert(key, value); - } - - Ok(values) - } -} - -impl<'de, K, V, S> Deserialize<'de> for IndexMap<K, V, S> -where - K: Deserialize<'de> + Eq + Hash, - V: Deserialize<'de>, - S: Default + BuildHasher, -{ - fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> - where - D: Deserializer<'de>, - { - deserializer.deserialize_map(IndexMapVisitor(PhantomData)) - } -} - -impl<'de, K, V, S, E> IntoDeserializer<'de, E> for IndexMap<K, V, S> -where - K: IntoDeserializer<'de, E> + Eq + Hash, - V: IntoDeserializer<'de, E>, - S: BuildHasher, - E: Error, -{ - type Deserializer = MapDeserializer<'de, <Self as IntoIterator>::IntoIter, E>; - - fn into_deserializer(self) -> Self::Deserializer { - MapDeserializer::new(self.into_iter()) - } -} - -impl<T, S> Serialize for IndexSet<T, S> -where - T: Serialize, -{ - fn serialize<Se>(&self, serializer: Se) -> Result<Se::Ok, Se::Error> - where - Se: Serializer, - { - serializer.collect_seq(self) - } -} - -struct IndexSetVisitor<T, S>(PhantomData<(T, S)>); - -impl<'de, T, S> Visitor<'de> for IndexSetVisitor<T, S> -where - T: Deserialize<'de> + Eq + Hash, - S: Default + BuildHasher, -{ - type Value = IndexSet<T, S>; - - fn expecting(&self, formatter: &mut Formatter<'_>) -> fmt::Result { - write!(formatter, "a set") - } - - fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error> - where - A: SeqAccess<'de>, - { - let capacity = cautious_capacity::<T, ()>(seq.size_hint()); - let mut values = IndexSet::with_capacity_and_hasher(capacity, S::default()); - - while let Some(value) = seq.next_element()? { - values.insert(value); - } - - Ok(values) - } -} - -impl<'de, T, S> Deserialize<'de> for IndexSet<T, S> -where - T: Deserialize<'de> + Eq + Hash, - S: Default + BuildHasher, -{ - fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> - where - D: Deserializer<'de>, - { - deserializer.deserialize_seq(IndexSetVisitor(PhantomData)) - } -} - -impl<'de, T, S, E> IntoDeserializer<'de, E> for IndexSet<T, S> -where - T: IntoDeserializer<'de, E> + Eq + Hash, - S: BuildHasher, - E: Error, -{ - type Deserializer = SeqDeserializer<<Self as IntoIterator>::IntoIter, E>; - - fn into_deserializer(self) -> Self::Deserializer { - SeqDeserializer::new(self.into_iter()) - } -} |
