Source code
Revision control
Copy as Markdown
Other Tools
use super::impls::{foreach_map_create, foreach_set_create};
use crate::{
duplicate_key_impls::{
DuplicateInsertsFirstWinsMap, DuplicateInsertsLastWinsSet, PreventDuplicateInsertsMap,
PreventDuplicateInsertsSet,
},
prelude::*,
MapFirstKeyWins, MapPreventDuplicates, SetLastValueWins, SetPreventDuplicates,
};
#[cfg(feature = "indexmap_1")]
use indexmap_1::{IndexMap, IndexSet};
struct SetPreventDuplicatesVisitor<SET, T, TAs>(PhantomData<(SET, T, TAs)>);
impl<'de, SET, T, TAs> Visitor<'de> for SetPreventDuplicatesVisitor<SET, T, TAs>
where
SET: PreventDuplicateInsertsSet<T>,
TAs: DeserializeAs<'de, T>,
{
type Value = SET;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a sequence")
}
#[inline]
fn visit_seq<A>(self, mut access: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
let mut values = Self::Value::new(access.size_hint());
while let Some(value) = access.next_element::<DeserializeAsWrap<T, TAs>>()? {
if !values.insert(value.into_inner()) {
return Err(DeError::custom("invalid entry: found duplicate value"));
};
}
Ok(values)
}
}
struct SetLastValueWinsVisitor<SET, T, TAs>(PhantomData<(SET, T, TAs)>);
impl<'de, SET, T, TAs> Visitor<'de> for SetLastValueWinsVisitor<SET, T, TAs>
where
SET: DuplicateInsertsLastWinsSet<T>,
TAs: DeserializeAs<'de, T>,
{
type Value = SET;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a sequence")
}
#[inline]
fn visit_seq<A>(self, mut access: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
let mut values = Self::Value::new(access.size_hint());
while let Some(value) = access.next_element::<DeserializeAsWrap<T, TAs>>()? {
values.replace(value.into_inner());
}
Ok(values)
}
}
#[cfg(feature = "alloc")]
macro_rules! set_impl {
(
$ty:ident < T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)* )* >,
$with_capacity:expr,
$append:ident
) => {
impl<'de, T, TAs $(, $typaram)*> DeserializeAs<'de, $ty<T $(, $typaram)*>> for SetPreventDuplicates<TAs>
where
TAs: DeserializeAs<'de, T>,
$(T: $tbound1 $(+ $tbound2)*,)*
$($typaram: $bound1 $(+ $bound2)*),*
{
fn deserialize_as<D>(deserializer: D) -> Result<$ty<T $(, $typaram)*>, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_seq(SetPreventDuplicatesVisitor::<$ty<T $(, $typaram)*>, T, TAs>(
PhantomData,
))
}
}
impl<'de, T, TAs $(, $typaram)*> DeserializeAs<'de, $ty<T $(, $typaram)*>> for SetLastValueWins<TAs>
where
TAs: DeserializeAs<'de, T>,
$(T: $tbound1 $(+ $tbound2)*,)*
$($typaram: $bound1 $(+ $bound2)*),*
{
fn deserialize_as<D>(deserializer: D) -> Result<$ty<T $(, $typaram)*>, D::Error>
where
D: Deserializer<'de>,
{
deserializer
.deserialize_seq(SetLastValueWinsVisitor::<$ty<T $(, $typaram)*>, T, TAs>(PhantomData))
}
}
}
}
foreach_set_create!(set_impl);
struct MapPreventDuplicatesVisitor<MAP, K, KAs, V, VAs>(PhantomData<(MAP, K, KAs, V, VAs)>);
impl<'de, MAP, K, KAs, V, VAs> Visitor<'de> for MapPreventDuplicatesVisitor<MAP, K, KAs, V, VAs>
where
MAP: PreventDuplicateInsertsMap<K, V>,
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
{
type Value = MAP;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a map")
}
#[inline]
fn visit_map<A>(self, mut access: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let mut values = Self::Value::new(access.size_hint());
while let Some((key, value)) =
access.next_entry::<DeserializeAsWrap<K, KAs>, DeserializeAsWrap<V, VAs>>()?
{
if !values.insert(key.into_inner(), value.into_inner()) {
return Err(DeError::custom("invalid entry: found duplicate key"));
};
}
Ok(values)
}
}
struct MapFirstKeyWinsVisitor<MAP, K, KAs, V, VAs>(PhantomData<(MAP, K, KAs, V, VAs)>);
impl<'de, MAP, K, KAs, V, VAs> Visitor<'de> for MapFirstKeyWinsVisitor<MAP, K, KAs, V, VAs>
where
MAP: DuplicateInsertsFirstWinsMap<K, V>,
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
{
type Value = MAP;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a map")
}
#[inline]
fn visit_map<A>(self, mut access: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let mut values = Self::Value::new(access.size_hint());
while let Some((key, value)) =
access.next_entry::<DeserializeAsWrap<K, KAs>, DeserializeAsWrap<V, VAs>>()?
{
values.insert(key.into_inner(), value.into_inner());
}
Ok(values)
}
}
#[cfg(feature = "alloc")]
macro_rules! map_impl {
(
$ty:ident < K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)*)* >,
$with_capacity:expr
) => {
impl<'de, K, V, KAs, VAs $(, $typaram)*> DeserializeAs<'de, $ty<K, V $(, $typaram)*>>
for MapPreventDuplicates<KAs, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
$(K: $kbound1 $(+ $kbound2)*,)*
$($typaram: $bound1 $(+ $bound2)*),*
{
fn deserialize_as<D>(deserializer: D) -> Result<$ty<K, V $(, $typaram)*>, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_map(MapPreventDuplicatesVisitor::<
$ty<K, V $(, $typaram)*>,
K,
KAs,
V,
VAs,
>(PhantomData))
}
}
impl<'de, K, V, KAs, VAs $(, $typaram)*> DeserializeAs<'de, $ty<K, V $(, $typaram)*>>
for MapFirstKeyWins<KAs, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
$(K: $kbound1 $(+ $kbound2)*,)*
$($typaram: $bound1 $(+ $bound2)*),*
{
fn deserialize_as<D>(deserializer: D) -> Result<$ty<K, V $(, $typaram)*>, D::Error>
where
D: Deserializer<'de>,
{
deserializer.deserialize_map(MapFirstKeyWinsVisitor::<$ty<K, V $(, $typaram)*>, K, KAs, V, VAs>(
PhantomData,
))
}
}
};
}
foreach_map_create!(map_impl);