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use crate::{formats::*, prelude::*};
#[cfg(feature = "indexmap_1")]
use indexmap_1::{IndexMap, IndexSet};
///////////////////////////////////////////////////////////////////////////////
// Helper macro used internally
#[cfg(feature = "alloc")]
type BoxedSlice<T> = Box<[T]>;
macro_rules! foreach_map {
($m:ident) => {
#[cfg(feature = "alloc")]
$m!(BTreeMap<K: Ord, V>);
#[cfg(feature = "std")]
$m!(HashMap<K: Eq + Hash, V, H: Sized>);
#[cfg(all(feature = "std", feature = "indexmap_1"))]
$m!(IndexMap<K: Eq + Hash, V, H: Sized>);
};
}
pub(crate) use foreach_map;
macro_rules! foreach_map_create {
($m:ident) => {
#[cfg(feature = "alloc")]
$m!(BTreeMap<K: Ord, V>,
(|_size| BTreeMap::new()));
#[cfg(feature = "std")]
$m!(HashMap<K: Eq + Hash, V, S: BuildHasher + Default>,
(|size| HashMap::with_capacity_and_hasher(size, Default::default())));
#[cfg(feature = "indexmap_1")]
$m!(IndexMap<K: Eq + Hash, V, S: BuildHasher + Default>,
(|size| IndexMap::with_capacity_and_hasher(size, Default::default())));
}
}
pub(crate) use foreach_map_create;
macro_rules! foreach_set {
($m:ident) => {
#[cfg(feature = "alloc")]
$m!(BTreeSet<(K, V): Ord>);
#[cfg(feature = "std")]
$m!(HashSet<(K, V): Eq + Hash>);
#[cfg(all(feature = "std", feature = "indexmap_1"))]
$m!(IndexSet<(K, V): Eq + Hash>);
}
}
pub(crate) use foreach_set;
macro_rules! foreach_set_create {
($m:ident) => {
#[cfg(feature = "alloc")]
$m!(BTreeSet<T: Ord>, (|_| BTreeSet::new()), insert);
#[cfg(feature = "std")]
$m!(
HashSet<T: Eq + Hash, S: BuildHasher + Default>,
(|size| HashSet::with_capacity_and_hasher(size, S::default())),
insert
);
#[cfg(feature = "indexmap_1")]
$m!(
IndexSet<T: Eq + Hash, S: BuildHasher + Default>,
(|size| IndexSet::with_capacity_and_hasher(size, S::default())),
insert
);
}
}
pub(crate) use foreach_set_create;
macro_rules! foreach_seq {
($m:ident) => {
foreach_set!($m);
#[cfg(feature = "alloc")]
$m!(BinaryHeap<(K, V): Ord>);
#[cfg(feature = "alloc")]
$m!(LinkedList<(K, V)>);
#[cfg(feature = "alloc")]
$m!(Vec<(K, V)>);
#[cfg(feature = "alloc")]
$m!(VecDeque<(K, V)>);
}
}
pub(crate) use foreach_seq;
macro_rules! foreach_seq_create {
($m:ident) => {
foreach_set_create!($m);
#[cfg(feature = "alloc")]
$m!(
BinaryHeap<T: Ord>,
(|size| BinaryHeap::with_capacity(size)),
push
);
#[cfg(feature = "alloc")]
$m!(BoxedSlice<T>, (|size| Vec::with_capacity(size)), push);
#[cfg(feature = "alloc")]
$m!(LinkedList<T>, (|_| LinkedList::new()), push_back);
#[cfg(feature = "alloc")]
$m!(Vec<T>, (|size| Vec::with_capacity(size)), push);
#[cfg(feature = "alloc")]
$m!(
VecDeque<T>,
(|size| VecDeque::with_capacity(size)),
push_back
);
};
}
pub(crate) use foreach_seq_create;
///////////////////////////////////////////////////////////////////////////////
// region: Simple Wrapper types (e.g., Box, Option)
#[cfg(feature = "alloc")]
impl<'de, T, U> DeserializeAs<'de, Box<T>> for Box<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Box<T>, D::Error>
where
D: Deserializer<'de>,
{
Ok(Box::new(
DeserializeAsWrap::<T, U>::deserialize(deserializer)?.into_inner(),
))
}
}
impl<'de, T, U> DeserializeAs<'de, Option<T>> for Option<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Option<T>, D::Error>
where
D: Deserializer<'de>,
{
struct OptionVisitor<T, U>(PhantomData<(T, U)>);
impl<'de, T, U> Visitor<'de> for OptionVisitor<T, U>
where
U: DeserializeAs<'de, T>,
{
type Value = Option<T>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("option")
}
#[inline]
fn visit_unit<E>(self) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(None)
}
#[inline]
fn visit_none<E>(self) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(None)
}
#[inline]
fn visit_some<D>(self, deserializer: D) -> Result<Self::Value, D::Error>
where
D: Deserializer<'de>,
{
U::deserialize_as(deserializer).map(Some)
}
}
deserializer.deserialize_option(OptionVisitor::<T, U>(PhantomData))
}
}
#[cfg(feature = "alloc")]
impl<'de, T, U> DeserializeAs<'de, Rc<T>> for Rc<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Rc<T>, D::Error>
where
D: Deserializer<'de>,
{
Ok(Rc::new(
DeserializeAsWrap::<T, U>::deserialize(deserializer)?.into_inner(),
))
}
}
#[cfg(feature = "alloc")]
impl<'de, T, U> DeserializeAs<'de, RcWeak<T>> for RcWeak<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<RcWeak<T>, D::Error>
where
D: Deserializer<'de>,
{
DeserializeAsWrap::<Option<Rc<T>>, Option<Rc<U>>>::deserialize(deserializer)?;
Ok(RcWeak::new())
}
}
#[cfg(all(feature = "alloc", target_has_atomic = "ptr"))]
impl<'de, T, U> DeserializeAs<'de, Arc<T>> for Arc<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Arc<T>, D::Error>
where
D: Deserializer<'de>,
{
Ok(Arc::new(
DeserializeAsWrap::<T, U>::deserialize(deserializer)?.into_inner(),
))
}
}
#[cfg(all(feature = "alloc", target_has_atomic = "ptr"))]
impl<'de, T, U> DeserializeAs<'de, ArcWeak<T>> for ArcWeak<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<ArcWeak<T>, D::Error>
where
D: Deserializer<'de>,
{
DeserializeAsWrap::<Option<Arc<T>>, Option<Arc<U>>>::deserialize(deserializer)?;
Ok(ArcWeak::new())
}
}
impl<'de, T, U> DeserializeAs<'de, Cell<T>> for Cell<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Cell<T>, D::Error>
where
D: Deserializer<'de>,
{
Ok(Cell::new(
DeserializeAsWrap::<T, U>::deserialize(deserializer)?.into_inner(),
))
}
}
impl<'de, T, U> DeserializeAs<'de, RefCell<T>> for RefCell<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<RefCell<T>, D::Error>
where
D: Deserializer<'de>,
{
Ok(RefCell::new(
DeserializeAsWrap::<T, U>::deserialize(deserializer)?.into_inner(),
))
}
}
#[cfg(feature = "std")]
impl<'de, T, U> DeserializeAs<'de, Mutex<T>> for Mutex<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Mutex<T>, D::Error>
where
D: Deserializer<'de>,
{
Ok(Mutex::new(
DeserializeAsWrap::<T, U>::deserialize(deserializer)?.into_inner(),
))
}
}
#[cfg(feature = "std")]
impl<'de, T, U> DeserializeAs<'de, RwLock<T>> for RwLock<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<RwLock<T>, D::Error>
where
D: Deserializer<'de>,
{
Ok(RwLock::new(
DeserializeAsWrap::<T, U>::deserialize(deserializer)?.into_inner(),
))
}
}
impl<'de, T, TAs, E, EAs> DeserializeAs<'de, Result<T, E>> for Result<TAs, EAs>
where
TAs: DeserializeAs<'de, T>,
EAs: DeserializeAs<'de, E>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Result<T, E>, D::Error>
where
D: Deserializer<'de>,
{
Ok(
match Result::<DeserializeAsWrap<T, TAs>, DeserializeAsWrap<E, EAs>>::deserialize(
deserializer,
)? {
Ok(value) => Ok(value.into_inner()),
Err(err) => Err(err.into_inner()),
},
)
}
}
impl<'de, T, As, const N: usize> DeserializeAs<'de, [T; N]> for [As; N]
where
As: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<[T; N], D::Error>
where
D: Deserializer<'de>,
{
struct ArrayVisitor<T, const M: usize>(PhantomData<T>);
impl<'de, T, As, const M: usize> Visitor<'de> for ArrayVisitor<DeserializeAsWrap<T, As>, M>
where
As: DeserializeAs<'de, T>,
{
type Value = [T; M];
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_fmt(format_args!("an array of size {M}"))
}
fn visit_seq<A>(self, seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
utils::array_from_iterator(
utils::SeqIter::new(seq).map(
|res: Result<DeserializeAsWrap<T, As>, A::Error>| {
res.map(|t| t.into_inner())
},
),
&self,
)
}
}
deserializer.deserialize_tuple(N, ArrayVisitor::<DeserializeAsWrap<T, As>, N>(PhantomData))
}
}
// endregion
///////////////////////////////////////////////////////////////////////////////
// region: Collection Types (e.g., Maps, Sets, Vec)
#[cfg(feature = "alloc")]
macro_rules! seq_impl {
(
$ty:ident < T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)* )* >,
$with_capacity:expr,
$append:ident
) => {
// Fix for clippy regression in macros on stable
// The bug no longer exists on nightly
#[allow(clippy::semicolon_if_nothing_returned)]
impl<'de, T, U $(, $typaram)*> DeserializeAs<'de, $ty<T $(, $typaram)*>> for $ty<U $(, $typaram)*>
where
U: 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>,
{
struct SeqVisitor<T, U $(, $typaram)*> {
marker: PhantomData<(T, U $(, $typaram)*)>,
}
impl<'de, T, U $(, $typaram)*> Visitor<'de> for SeqVisitor<T, U $(, $typaram)*>
where
U: DeserializeAs<'de, T>,
$(T: $tbound1 $(+ $tbound2)*,)*
$($typaram: $bound1 $(+ $bound2)*),*
{
type Value = $ty<T $(, $typaram)*>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a sequence")
}
fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
let mut values = ($with_capacity)(utils::size_hint_cautious(seq.size_hint()));
while let Some(value) = seq
.next_element()?
.map(|v: DeserializeAsWrap<T, U>| v.into_inner())
{
values.$append(value);
}
Ok(values.into())
}
}
let visitor = SeqVisitor::<T, U $(, $typaram)*> {
marker: PhantomData,
};
deserializer.deserialize_seq(visitor)
}
}
};
}
foreach_seq_create!(seq_impl);
#[cfg(feature = "alloc")]
macro_rules! map_impl {
(
$ty:ident < K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)*)* >,
$with_capacity:expr
) => {
// Fix for clippy regression in macros on stable
// The bug no longer exists on nightly
#[allow(clippy::semicolon_if_nothing_returned)]
impl<'de, K, V, KU, VU $(, $typaram)*> DeserializeAs<'de, $ty<K, V $(, $typaram)*>> for $ty<KU, VU $(, $typaram)*>
where
KU: DeserializeAs<'de, K>,
VU: 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>,
{
struct MapVisitor<K, V, KU, VU $(, $typaram)*>(PhantomData<(K, V, KU, VU $(, $typaram)*)>);
impl<'de, K, V, KU, VU $(, $typaram)*> Visitor<'de> for MapVisitor<K, V, KU, VU $(, $typaram)*>
where
KU: DeserializeAs<'de, K>,
VU: DeserializeAs<'de, V>,
$(K: $kbound1 $(+ $kbound2)*,)*
$($typaram: $bound1 $(+ $bound2)*),*
{
type Value = $ty<K, V $(, $typaram)*>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a map")
}
#[inline]
fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let mut values = ($with_capacity)(utils::size_hint_cautious(map.size_hint()));
while let Some((key, value)) = (map.next_entry())?.map(|(k, v): (DeserializeAsWrap::<K, KU>, DeserializeAsWrap::<V, VU>)| (k.into_inner(), v.into_inner())) {
values.insert(key, value);
}
Ok(values)
}
}
let visitor = MapVisitor::<K, V, KU, VU $(, $typaram)*> (PhantomData);
deserializer.deserialize_map(visitor)
}
}
}
}
foreach_map_create!(map_impl);
macro_rules! tuple_impl {
($len:literal $($n:tt $t:ident $tas:ident)+) => {
impl<'de, $($t, $tas,)+> DeserializeAs<'de, ($($t,)+)> for ($($tas,)+)
where
$($tas: DeserializeAs<'de, $t>,)+
{
fn deserialize_as<D>(deserializer: D) -> Result<($($t,)+), D::Error>
where
D: Deserializer<'de>,
{
struct TupleVisitor<$($t,)+>(PhantomData<($($t,)+)>);
impl<'de, $($t, $tas,)+> Visitor<'de>
for TupleVisitor<$(DeserializeAsWrap<$t, $tas>,)+>
where
$($tas: DeserializeAs<'de, $t>,)+
{
type Value = ($($t,)+);
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str(concat!("a tuple of size ", $len))
}
#[allow(non_snake_case)]
fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
$(
let $t: DeserializeAsWrap<$t, $tas> = match seq.next_element()? {
Some(value) => value,
None => return Err(DeError::invalid_length($n, &self)),
};
)+
Ok(($($t.into_inner(),)+))
}
}
deserializer.deserialize_tuple(
$len,
TupleVisitor::<$(DeserializeAsWrap<$t, $tas>,)+>(PhantomData),
)
}
}
};
}
tuple_impl!(1 0 T0 As0);
tuple_impl!(2 0 T0 As0 1 T1 As1);
tuple_impl!(3 0 T0 As0 1 T1 As1 2 T2 As2);
tuple_impl!(4 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3);
tuple_impl!(5 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4);
tuple_impl!(6 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5);
tuple_impl!(7 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6);
tuple_impl!(8 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7);
tuple_impl!(9 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8);
tuple_impl!(10 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8 9 T9 As9);
tuple_impl!(11 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8 9 T9 As9 10 T10 As10);
tuple_impl!(12 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8 9 T9 As9 10 T10 As10 11 T11 As11);
tuple_impl!(13 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8 9 T9 As9 10 T10 As10 11 T11 As11 12 T12 As12);
tuple_impl!(14 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8 9 T9 As9 10 T10 As10 11 T11 As11 12 T12 As12 13 T13 As13);
tuple_impl!(15 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8 9 T9 As9 10 T10 As10 11 T11 As11 12 T12 As12 13 T13 As13 14 T14 As14);
tuple_impl!(16 0 T0 As0 1 T1 As1 2 T2 As2 3 T3 As3 4 T4 As4 5 T5 As5 6 T6 As6 7 T7 As7 8 T8 As8 9 T9 As9 10 T10 As10 11 T11 As11 12 T12 As12 13 T13 As13 14 T14 As14 15 T15 As15);
#[cfg(feature = "alloc")]
macro_rules! map_as_tuple_seq_intern {
($tyorig:ident < K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)*)* >, $ty:ident <(KAs, VAs)>) => {
impl<'de, K, KAs, V, VAs> DeserializeAs<'de, $tyorig<K, V>> for $ty<(KAs, VAs)>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
$(K: $kbound1 $(+ $kbound2)*,)*
{
fn deserialize_as<D>(deserializer: D) -> Result<$tyorig<K, V>, D::Error>
where
D: Deserializer<'de>,
{
struct SeqVisitor<K, KAs, V, VAs> {
marker: PhantomData<(K, KAs, V, VAs)>,
}
impl<'de, K, KAs, V, VAs> Visitor<'de> for SeqVisitor<K, KAs, V, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
$(K: $kbound1 $(+ $kbound2)*,)*
{
type Value = $tyorig<K, V>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a sequence")
}
#[inline]
fn visit_seq<A>(self, access: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
let iter = utils::SeqIter::new(access);
iter.map(|res| {
res.map(
|(k, v): (DeserializeAsWrap<K, KAs>, DeserializeAsWrap<V, VAs>)| {
(k.into_inner(), v.into_inner())
},
)
})
.collect()
}
}
let visitor = SeqVisitor::<K, KAs, V, VAs> {
marker: PhantomData,
};
deserializer.deserialize_seq(visitor)
}
}
};
}
#[cfg(feature = "alloc")]
macro_rules! map_as_tuple_seq {
($tyorig:ident < K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound1:ident $(+ $bound2:ident)*)* >) => {
map_as_tuple_seq_intern!($tyorig < K $(: $kbound1 $(+ $kbound2)*)* , V $(, $typaram : $bound1 $(+ $bound2)*)* > , Seq<(KAs, VAs)>);
#[cfg(feature = "alloc")]
map_as_tuple_seq_intern!($tyorig < K $(: $kbound1 $(+ $kbound2)*)* , V $(, $typaram : $bound1 $(+ $bound2)*)* >, Vec<(KAs, VAs)>);
}
}
foreach_map!(map_as_tuple_seq);
#[cfg(feature = "alloc")]
macro_rules! tuple_seq_as_map_impl_intern {
($tyorig:ident < (K, V) $(: $($bound:ident $(+)?)+)?>, $ty:ident <KAs, VAs>) => {
#[allow(clippy::implicit_hasher)]
impl<'de, K, KAs, V, VAs> DeserializeAs<'de, $tyorig < (K, V) >> for $ty<KAs, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
(K, V): $($($bound +)*)*,
{
fn deserialize_as<D>(deserializer: D) -> Result<$tyorig < (K, V) >, D::Error>
where
D: Deserializer<'de>,
{
struct MapVisitor<K, KAs, V, VAs> {
marker: PhantomData<(K, KAs, V, VAs)>,
}
impl<'de, K, KAs, V, VAs> Visitor<'de> for MapVisitor<K, KAs, V, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
(K, V): $($($bound +)*)*,
{
type Value = $tyorig < (K, V) >;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a map")
}
#[inline]
fn visit_map<A>(self, access: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let iter = utils::MapIter::new(access);
iter.map(|res| {
res.map(
|(k, v): (DeserializeAsWrap<K, KAs>, DeserializeAsWrap<V, VAs>)| {
(k.into_inner(), v.into_inner())
},
)
})
.collect()
}
}
let visitor = MapVisitor::<K, KAs, V, VAs> {
marker: PhantomData,
};
deserializer.deserialize_map(visitor)
}
}
}
}
#[cfg(feature = "alloc")]
macro_rules! tuple_seq_as_map_impl {
($tyorig:ident < (K, V) $(: $($bound:ident $(+)?)+)?>) => {
tuple_seq_as_map_impl_intern!($tyorig < (K, V) $(: $($bound +)+)? >, Map<KAs, VAs>);
#[cfg(feature = "alloc")]
tuple_seq_as_map_impl_intern!($tyorig < (K, V) $(: $($bound +)+)? >, BTreeMap<KAs, VAs>);
#[cfg(feature = "std")]
tuple_seq_as_map_impl_intern!($tyorig < (K, V) $(: $($bound +)+)? >, HashMap<KAs, VAs>);
}
}
foreach_seq!(tuple_seq_as_map_impl);
// Option does not implement FromIterator directly, so we need a different implementation
#[cfg(feature = "alloc")]
macro_rules! tuple_seq_as_map_option_impl {
($ty:ident) => {
#[allow(clippy::implicit_hasher)]
impl<'de, K, KAs, V, VAs> DeserializeAs<'de, Option<(K, V)>> for $ty<KAs, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Option<(K, V)>, D::Error>
where
D: Deserializer<'de>,
{
struct MapVisitor<K, KAs, V, VAs> {
marker: PhantomData<(K, KAs, V, VAs)>,
}
impl<'de, K, KAs, V, VAs> Visitor<'de> for MapVisitor<K, KAs, V, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
{
type Value = Option<(K, V)>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a map of size 1")
}
#[inline]
fn visit_map<A>(self, access: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
let iter = utils::MapIter::new(access);
iter.map(|res| {
res.map(
|(k, v): (DeserializeAsWrap<K, KAs>, DeserializeAsWrap<V, VAs>)| {
(k.into_inner(), v.into_inner())
},
)
})
.next()
.transpose()
}
}
let visitor = MapVisitor::<K, KAs, V, VAs> {
marker: PhantomData,
};
deserializer.deserialize_map(visitor)
}
}
};
}
#[cfg(feature = "alloc")]
tuple_seq_as_map_option_impl!(BTreeMap);
#[cfg(feature = "std")]
tuple_seq_as_map_option_impl!(HashMap);
macro_rules! tuple_seq_as_map_arr {
($ty:ident <KAs, VAs>) => {
#[allow(clippy::implicit_hasher)]
impl<'de, K, KAs, V, VAs, const N: usize> DeserializeAs<'de, [(K, V); N]> for $ty<KAs, VAs>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
{
fn deserialize_as<D>(deserializer: D) -> Result<[(K, V); N], D::Error>
where
D: Deserializer<'de>,
{
struct MapVisitor<K, KAs, V, VAs, const M: usize> {
marker: PhantomData<(K, KAs, V, VAs)>,
}
impl<'de, K, KAs, V, VAs, const M: usize> Visitor<'de> for MapVisitor<K, KAs, V, VAs, M>
where
KAs: DeserializeAs<'de, K>,
VAs: DeserializeAs<'de, V>,
{
type Value = [(K, V); M];
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_fmt(format_args!("a map of length {}", M))
}
fn visit_map<A>(self, access: A) -> Result<Self::Value, A::Error>
where
A: MapAccess<'de>,
{
utils::array_from_iterator(utils::MapIter::new(access).map(
|res: Result<(DeserializeAsWrap<K, KAs>, DeserializeAsWrap<V, VAs>), A::Error>| {
res.map(|(k, v)| (k.into_inner(), v.into_inner()))
}
), &self)
}
}
let visitor = MapVisitor::<K, KAs, V, VAs, N> {
marker: PhantomData,
};
deserializer.deserialize_map(visitor)
}
}
}
}
tuple_seq_as_map_arr!(Map<KAs, VAs>);
#[cfg(feature = "alloc")]
tuple_seq_as_map_arr!(BTreeMap<KAs, VAs>);
#[cfg(feature = "std")]
tuple_seq_as_map_arr!(HashMap<KAs, VAs>);
// endregion
///////////////////////////////////////////////////////////////////////////////
// region: Conversion types which cause different serialization behavior
impl<'de, T: Deserialize<'de>> DeserializeAs<'de, T> for Same {
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
T::deserialize(deserializer)
}
}
impl<'de, T> DeserializeAs<'de, T> for DisplayFromStr
where
T: FromStr,
T::Err: Display,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
struct Helper<S>(PhantomData<S>);
impl<'de, S> Visitor<'de> for Helper<S>
where
S: FromStr,
<S as FromStr>::Err: Display,
{
type Value = S;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(formatter, "a string")
}
fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
where
E: DeError,
{
value.parse::<Self::Value>().map_err(DeError::custom)
}
}
deserializer.deserialize_str(Helper(PhantomData))
}
}
#[cfg(feature = "alloc")]
impl<'de, T, U> DeserializeAs<'de, Vec<T>> for VecSkipError<U>
where
U: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<Vec<T>, D::Error>
where
D: Deserializer<'de>,
{
enum GoodOrError<T, TAs> {
Good(T),
// Only here to consume the TAs generic
Error(PhantomData<TAs>),
}
impl<'de, T, TAs> Deserialize<'de> for GoodOrError<T, TAs>
where
TAs: DeserializeAs<'de, T>,
{
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let is_hr = deserializer.is_human_readable();
let content: content::de::Content<'de> = Deserialize::deserialize(deserializer)?;
Ok(
match <DeserializeAsWrap<T, TAs>>::deserialize(
content::de::ContentDeserializer::<D::Error>::new(content, is_hr),
) {
Ok(elem) => GoodOrError::Good(elem.into_inner()),
Err(_) => GoodOrError::Error(PhantomData),
},
)
}
}
struct SeqVisitor<T, U> {
marker: PhantomData<T>,
marker2: PhantomData<U>,
}
impl<'de, T, TAs> Visitor<'de> for SeqVisitor<T, TAs>
where
TAs: DeserializeAs<'de, T>,
{
type Value = Vec<T>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a sequence")
}
fn visit_seq<A>(self, seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
utils::SeqIter::new(seq)
.filter_map(|res: Result<GoodOrError<T, TAs>, A::Error>| match res {
Ok(GoodOrError::Good(value)) => Some(Ok(value)),
Ok(GoodOrError::Error(_)) => None,
Err(err) => Some(Err(err)),
})
.collect()
}
}
let visitor = SeqVisitor::<T, U> {
marker: PhantomData,
marker2: PhantomData,
};
deserializer.deserialize_seq(visitor)
}
}
impl<'de, Str> DeserializeAs<'de, Option<Str>> for NoneAsEmptyString
where
Str: FromStr,
Str::Err: Display,
{
fn deserialize_as<D>(deserializer: D) -> Result<Option<Str>, D::Error>
where
D: Deserializer<'de>,
{
struct OptionStringEmptyNone<S>(PhantomData<S>);
impl<'de, S> Visitor<'de> for OptionStringEmptyNone<S>
where
S: FromStr,
S::Err: Display,
{
type Value = Option<S>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a string")
}
fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
where
E: DeError,
{
match value {
"" => Ok(None),
v => S::from_str(v).map(Some).map_err(DeError::custom),
}
}
// handles the `null` case
fn visit_unit<E>(self) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(None)
}
}
deserializer.deserialize_any(OptionStringEmptyNone(PhantomData))
}
}
#[cfg(feature = "alloc")]
impl<'de, T, TAs> DeserializeAs<'de, T> for DefaultOnError<TAs>
where
TAs: DeserializeAs<'de, T>,
T: Default,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
let is_hr = deserializer.is_human_readable();
let content: content::de::Content<'de> = match Deserialize::deserialize(deserializer) {
Ok(content) => content,
Err(_) => return Ok(Default::default()),
};
Ok(
match <DeserializeAsWrap<T, TAs>>::deserialize(content::de::ContentDeserializer::<
D::Error,
>::new(content, is_hr))
{
Ok(elem) => elem.into_inner(),
Err(_) => Default::default(),
},
)
}
}
#[cfg(feature = "alloc")]
impl<'de> DeserializeAs<'de, Vec<u8>> for BytesOrString {
fn deserialize_as<D>(deserializer: D) -> Result<Vec<u8>, D::Error>
where
D: Deserializer<'de>,
{
struct BytesOrStringVisitor;
impl<'de> Visitor<'de> for BytesOrStringVisitor {
type Value = Vec<u8>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a list of bytes or a string")
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E> {
Ok(v.to_vec())
}
#[cfg(feature = "alloc")]
fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E> {
Ok(v)
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> {
Ok(v.as_bytes().to_vec())
}
#[cfg(feature = "alloc")]
fn visit_string<E>(self, v: String) -> Result<Self::Value, E> {
Ok(v.into_bytes())
}
fn visit_seq<A>(self, seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
utils::SeqIter::new(seq).collect()
}
}
deserializer.deserialize_any(BytesOrStringVisitor)
}
}
impl<'de, SEPARATOR, I, T> DeserializeAs<'de, I> for StringWithSeparator<SEPARATOR, T>
where
SEPARATOR: Separator,
I: FromIterator<T>,
T: FromStr,
T::Err: Display,
{
fn deserialize_as<D>(deserializer: D) -> Result<I, D::Error>
where
D: Deserializer<'de>,
{
struct Helper<SEPARATOR, I, T>(PhantomData<(SEPARATOR, I, T)>);
impl<'de, SEPARATOR, I, T> Visitor<'de> for Helper<SEPARATOR, I, T>
where
SEPARATOR: Separator,
I: FromIterator<T>,
T: FromStr,
T::Err: Display,
{
type Value = I;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(formatter, "a string")
}
fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
where
E: DeError,
{
if value.is_empty() {
Ok(None.into_iter().collect())
} else {
value
.split(SEPARATOR::separator())
.map(FromStr::from_str)
.collect::<Result<_, _>>()
.map_err(DeError::custom)
}
}
}
deserializer.deserialize_str(Helper::<SEPARATOR, I, T>(PhantomData))
}
}
#[cfg(feature = "std")]
macro_rules! use_signed_duration {
(
$main_trait:ident $internal_trait:ident =>
{
$ty:ty; $converter:ident =>
$({
$format:ty, $strictness:ty =>
$($tbound:ident: $bound:ident $(,)?)*
})*
}
) => {
$(
impl<'de, $($tbound,)*> DeserializeAs<'de, $ty> for $main_trait<$format, $strictness>
where
$($tbound: $bound,)*
{
fn deserialize_as<D>(deserializer: D) -> Result<$ty, D::Error>
where
D: Deserializer<'de>,
{
let dur: DurationSigned = $internal_trait::<$format, $strictness>::deserialize_as(deserializer)?;
dur.$converter::<D>()
}
}
)*
};
(
$( $main_trait:ident $internal_trait:ident, )+ => $rest:tt
) => {
$( use_signed_duration!($main_trait $internal_trait => $rest); )+
};
}
#[cfg(feature = "std")]
use_signed_duration!(
DurationSeconds DurationSeconds,
DurationMilliSeconds DurationMilliSeconds,
DurationMicroSeconds DurationMicroSeconds,
DurationNanoSeconds DurationNanoSeconds,
=> {
Duration; to_std_duration =>
{u64, Strict =>}
{f64, Strict =>}
{String, Strict =>}
{FORMAT, Flexible => FORMAT: Format}
}
);
#[cfg(feature = "std")]
use_signed_duration!(
DurationSecondsWithFrac DurationSecondsWithFrac,
DurationMilliSecondsWithFrac DurationMilliSecondsWithFrac,
DurationMicroSecondsWithFrac DurationMicroSecondsWithFrac,
DurationNanoSecondsWithFrac DurationNanoSecondsWithFrac,
=> {
Duration; to_std_duration =>
{f64, Strict =>}
{String, Strict =>}
{FORMAT, Flexible => FORMAT: Format}
}
);
#[cfg(feature = "std")]
use_signed_duration!(
TimestampSeconds DurationSeconds,
TimestampMilliSeconds DurationMilliSeconds,
TimestampMicroSeconds DurationMicroSeconds,
TimestampNanoSeconds DurationNanoSeconds,
=> {
SystemTime; to_system_time =>
{i64, Strict =>}
{f64, Strict =>}
{String, Strict =>}
{FORMAT, Flexible => FORMAT: Format}
}
);
#[cfg(feature = "std")]
use_signed_duration!(
TimestampSecondsWithFrac DurationSecondsWithFrac,
TimestampMilliSecondsWithFrac DurationMilliSecondsWithFrac,
TimestampMicroSecondsWithFrac DurationMicroSecondsWithFrac,
TimestampNanoSecondsWithFrac DurationNanoSecondsWithFrac,
=> {
SystemTime; to_system_time =>
{f64, Strict =>}
{String, Strict =>}
{FORMAT, Flexible => FORMAT: Format}
}
);
impl<'de, T, U> DeserializeAs<'de, T> for DefaultOnNull<U>
where
U: DeserializeAs<'de, T>,
T: Default,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
Ok(Option::<U>::deserialize_as(deserializer)?.unwrap_or_default())
}
}
impl<'de> DeserializeAs<'de, &'de [u8]> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<&'de [u8], D::Error>
where
D: Deserializer<'de>,
{
<&'de [u8]>::deserialize(deserializer)
}
}
// serde_bytes implementation for ByteBuf
// https://github.com/serde-rs/bytes/blob/cbae606b9dc225fc094b031cc84eac9493da2058/src/bytebuf.rs#L196
//
// Implements:
// * visit_seq
// * visit_bytes
// * visit_byte_buf
// * visit_str
// * visit_string
#[cfg(feature = "alloc")]
impl<'de> DeserializeAs<'de, Vec<u8>> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<Vec<u8>, D::Error>
where
D: Deserializer<'de>,
{
struct VecVisitor;
impl<'de> Visitor<'de> for VecVisitor {
type Value = Vec<u8>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a byte array")
}
fn visit_seq<A>(self, seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
utils::SeqIter::new(seq).collect::<Result<_, _>>()
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v.to_vec())
}
fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v)
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v.as_bytes().to_vec())
}
fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v.into_bytes())
}
}
deserializer.deserialize_byte_buf(VecVisitor)
}
}
#[cfg(feature = "alloc")]
impl<'de> DeserializeAs<'de, Box<[u8]>> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<Box<[u8]>, D::Error>
where
D: Deserializer<'de>,
{
<Bytes as DeserializeAs<'de, Vec<u8>>>::deserialize_as(deserializer)
.map(|vec| vec.into_boxed_slice())
}
}
// serde_bytes implementation for Cow<'a, [u8]>
//
// Implements:
// * visit_borrowed_bytes
// * visit_borrowed_str
// * visit_bytes
// * visit_str
// * visit_byte_buf
// * visit_string
// * visit_seq
#[cfg(feature = "alloc")]
impl<'de> DeserializeAs<'de, Cow<'de, [u8]>> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<Cow<'de, [u8]>, D::Error>
where
D: Deserializer<'de>,
{
struct CowVisitor;
impl<'de> Visitor<'de> for CowVisitor {
type Value = Cow<'de, [u8]>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a byte array")
}
fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Borrowed(v))
}
fn visit_borrowed_str<E>(self, v: &'de str) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Borrowed(v.as_bytes()))
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(v.to_vec()))
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(v.as_bytes().to_vec()))
}
fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(v))
}
fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(v.into_bytes()))
}
fn visit_seq<V>(self, seq: V) -> Result<Self::Value, V::Error>
where
V: SeqAccess<'de>,
{
Ok(Cow::Owned(
utils::SeqIter::new(seq).collect::<Result<_, _>>()?,
))
}
}
deserializer.deserialize_bytes(CowVisitor)
}
}
impl<'de, const N: usize> DeserializeAs<'de, [u8; N]> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<[u8; N], D::Error>
where
D: Deserializer<'de>,
{
struct ArrayVisitor<const M: usize>;
impl<'de, const M: usize> Visitor<'de> for ArrayVisitor<M> {
type Value = [u8; M];
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_fmt(format_args!("an byte array of size {M}"))
}
fn visit_seq<A>(self, seq: A) -> Result<Self::Value, A::Error>
where
A: SeqAccess<'de>,
{
utils::array_from_iterator(utils::SeqIter::new(seq), &self)
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: DeError,
{
v.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: DeError,
{
v.as_bytes()
.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))
}
}
deserializer.deserialize_bytes(ArrayVisitor::<N>)
}
}
impl<'de, const N: usize> DeserializeAs<'de, &'de [u8; N]> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<&'de [u8; N], D::Error>
where
D: Deserializer<'de>,
{
struct ArrayVisitor<const M: usize>;
impl<'de, const M: usize> Visitor<'de> for ArrayVisitor<M> {
type Value = &'de [u8; M];
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_fmt(format_args!("a borrowed byte array of size {M}"))
}
fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<Self::Value, E>
where
E: DeError,
{
v.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))
}
fn visit_borrowed_str<E>(self, v: &'de str) -> Result<Self::Value, E>
where
E: DeError,
{
v.as_bytes()
.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))
}
}
deserializer.deserialize_bytes(ArrayVisitor::<N>)
}
}
#[cfg(feature = "alloc")]
impl<'de, const N: usize> DeserializeAs<'de, Cow<'de, [u8; N]>> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<Cow<'de, [u8; N]>, D::Error>
where
D: Deserializer<'de>,
{
struct CowVisitor<const M: usize>;
impl<'de, const M: usize> Visitor<'de> for CowVisitor<M> {
type Value = Cow<'de, [u8; M]>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("a byte array")
}
fn visit_borrowed_bytes<E>(self, v: &'de [u8]) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Borrowed(
v.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))?,
))
}
fn visit_borrowed_str<E>(self, v: &'de str) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Borrowed(
v.as_bytes()
.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))?,
))
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(
v.to_vec()
.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))?,
))
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(
v.as_bytes()
.to_vec()
.try_into()
.map_err(|_| DeError::invalid_length(v.len(), &self))?,
))
}
fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
where
E: DeError,
{
let len = v.len();
Ok(Cow::Owned(
v.try_into()
.map_err(|_| DeError::invalid_length(len, &self))?,
))
}
fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
where
E: DeError,
{
let len = v.len();
Ok(Cow::Owned(
v.into_bytes()
.try_into()
.map_err(|_| DeError::invalid_length(len, &self))?,
))
}
fn visit_seq<V>(self, seq: V) -> Result<Self::Value, V::Error>
where
V: SeqAccess<'de>,
{
Ok(Cow::Owned(utils::array_from_iterator(
utils::SeqIter::new(seq),
&self,
)?))
}
}
deserializer.deserialize_bytes(CowVisitor)
}
}
#[cfg(feature = "alloc")]
impl<'de, const N: usize> DeserializeAs<'de, Box<[u8; N]>> for Bytes {
fn deserialize_as<D>(deserializer: D) -> Result<Box<[u8; N]>, D::Error>
where
D: Deserializer<'de>,
{
Bytes::deserialize_as(deserializer).map(Box::new)
}
}
#[cfg(feature = "alloc")]
impl<'de, T, TAs, FORMAT> DeserializeAs<'de, Vec<T>> for OneOrMany<TAs, FORMAT>
where
TAs: DeserializeAs<'de, T>,
FORMAT: Format,
{
fn deserialize_as<D>(deserializer: D) -> Result<Vec<T>, D::Error>
where
D: Deserializer<'de>,
{
let is_hr = deserializer.is_human_readable();
let content: content::de::Content<'de> = Deserialize::deserialize(deserializer)?;
let one_err: D::Error = match <DeserializeAsWrap<T, TAs>>::deserialize(
content::de::ContentRefDeserializer::new(&content, is_hr),
) {
Ok(one) => return Ok(alloc::vec![one.into_inner()]),
Err(err) => err,
};
let many_err: D::Error = match <DeserializeAsWrap<Vec<T>, Vec<TAs>>>::deserialize(
content::de::ContentDeserializer::new(content, is_hr),
) {
Ok(many) => return Ok(many.into_inner()),
Err(err) => err,
};
Err(DeError::custom(format_args!(
"OneOrMany could not deserialize any variant:\n One: {}\n Many: {}",
one_err, many_err
)))
}
}
#[cfg(feature = "alloc")]
impl<'de, T, TAs1> DeserializeAs<'de, T> for PickFirst<(TAs1,)>
where
TAs1: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
Ok(DeserializeAsWrap::<T, TAs1>::deserialize(deserializer)?.into_inner())
}
}
#[cfg(feature = "alloc")]
impl<'de, T, TAs1, TAs2> DeserializeAs<'de, T> for PickFirst<(TAs1, TAs2)>
where
TAs1: DeserializeAs<'de, T>,
TAs2: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
let is_hr = deserializer.is_human_readable();
let content: content::de::Content<'de> = Deserialize::deserialize(deserializer)?;
let first_err: D::Error = match <DeserializeAsWrap<T, TAs1>>::deserialize(
content::de::ContentRefDeserializer::new(&content, is_hr),
) {
Ok(first) => return Ok(first.into_inner()),
Err(err) => err,
};
let second_err: D::Error = match <DeserializeAsWrap<T, TAs2>>::deserialize(
content::de::ContentDeserializer::new(content, is_hr),
) {
Ok(second) => return Ok(second.into_inner()),
Err(err) => err,
};
Err(DeError::custom(format_args!(
"PickFirst could not deserialize any variant:\n First: {}\n Second: {}",
first_err, second_err
)))
}
}
#[cfg(feature = "alloc")]
impl<'de, T, TAs1, TAs2, TAs3> DeserializeAs<'de, T> for PickFirst<(TAs1, TAs2, TAs3)>
where
TAs1: DeserializeAs<'de, T>,
TAs2: DeserializeAs<'de, T>,
TAs3: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
let is_hr = deserializer.is_human_readable();
let content: content::de::Content<'de> = Deserialize::deserialize(deserializer)?;
let first_err: D::Error = match <DeserializeAsWrap<T, TAs1>>::deserialize(
content::de::ContentRefDeserializer::new(&content, is_hr),
) {
Ok(first) => return Ok(first.into_inner()),
Err(err) => err,
};
let second_err: D::Error = match <DeserializeAsWrap<T, TAs2>>::deserialize(
content::de::ContentRefDeserializer::new(&content, is_hr),
) {
Ok(second) => return Ok(second.into_inner()),
Err(err) => err,
};
let third_err: D::Error = match <DeserializeAsWrap<T, TAs3>>::deserialize(
content::de::ContentDeserializer::new(content, is_hr),
) {
Ok(third) => return Ok(third.into_inner()),
Err(err) => err,
};
Err(DeError::custom(format_args!(
"PickFirst could not deserialize any variant:\n First: {}\n Second: {}\n Third: {}",
first_err, second_err, third_err,
)))
}
}
#[cfg(feature = "alloc")]
impl<'de, T, TAs1, TAs2, TAs3, TAs4> DeserializeAs<'de, T> for PickFirst<(TAs1, TAs2, TAs3, TAs4)>
where
TAs1: DeserializeAs<'de, T>,
TAs2: DeserializeAs<'de, T>,
TAs3: DeserializeAs<'de, T>,
TAs4: DeserializeAs<'de, T>,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
let is_hr = deserializer.is_human_readable();
let content: content::de::Content<'de> = Deserialize::deserialize(deserializer)?;
let first_err: D::Error = match <DeserializeAsWrap<T, TAs1>>::deserialize(
content::de::ContentRefDeserializer::new(&content, is_hr),
) {
Ok(first) => return Ok(first.into_inner()),
Err(err) => err,
};
let second_err: D::Error = match <DeserializeAsWrap<T, TAs2>>::deserialize(
content::de::ContentRefDeserializer::new(&content, is_hr),
) {
Ok(second) => return Ok(second.into_inner()),
Err(err) => err,
};
let third_err: D::Error = match <DeserializeAsWrap<T, TAs3>>::deserialize(
content::de::ContentRefDeserializer::new(&content, is_hr),
) {
Ok(third) => return Ok(third.into_inner()),
Err(err) => err,
};
let fourth_err: D::Error = match <DeserializeAsWrap<T, TAs4>>::deserialize(
content::de::ContentDeserializer::new(content, is_hr),
) {
Ok(fourth) => return Ok(fourth.into_inner()),
Err(err) => err,
};
Err(DeError::custom(format_args!(
"PickFirst could not deserialize any variant:\n First: {}\n Second: {}\n Third: {}\n Fourth: {}",
first_err, second_err, third_err, fourth_err,
)))
}
}
impl<'de, T, U> DeserializeAs<'de, T> for FromInto<U>
where
U: Into<T>,
U: Deserialize<'de>,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
Ok(U::deserialize(deserializer)?.into())
}
}
impl<'de, T, U> DeserializeAs<'de, T> for TryFromInto<U>
where
U: TryInto<T>,
<U as TryInto<T>>::Error: Display,
U: Deserialize<'de>,
{
fn deserialize_as<D>(deserializer: D) -> Result<T, D::Error>
where
D: Deserializer<'de>,
{
U::deserialize(deserializer)?
.try_into()
.map_err(DeError::custom)
}
}
#[cfg(feature = "alloc")]
impl<'de> DeserializeAs<'de, Cow<'de, str>> for BorrowCow {
fn deserialize_as<D>(deserializer: D) -> Result<Cow<'de, str>, D::Error>
where
D: Deserializer<'de>,
{
struct CowVisitor;
impl<'de> Visitor<'de> for CowVisitor {
type Value = Cow<'de, str>;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("an optionally borrowed string")
}
fn visit_borrowed_str<E>(self, v: &'de str) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Borrowed(v))
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(v.to_owned()))
}
fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(Cow::Owned(v))
}
}
deserializer.deserialize_string(CowVisitor)
}
}
#[cfg(feature = "alloc")]
impl<'de> DeserializeAs<'de, Cow<'de, [u8]>> for BorrowCow {
fn deserialize_as<D>(deserializer: D) -> Result<Cow<'de, [u8]>, D::Error>
where
D: Deserializer<'de>,
{
Bytes::deserialize_as(deserializer)
}
}
#[cfg(feature = "alloc")]
impl<'de, const N: usize> DeserializeAs<'de, Cow<'de, [u8; N]>> for BorrowCow {
fn deserialize_as<D>(deserializer: D) -> Result<Cow<'de, [u8; N]>, D::Error>
where
D: Deserializer<'de>,
{
Bytes::deserialize_as(deserializer)
}
}
impl<'de> DeserializeAs<'de, bool> for BoolFromInt<Strict> {
fn deserialize_as<D>(deserializer: D) -> Result<bool, D::Error>
where
D: Deserializer<'de>,
{
struct U8Visitor;
impl<'de> Visitor<'de> for U8Visitor {
type Value = bool;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("an integer 0 or 1")
}
fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E>
where
E: DeError,
{
match v {
0 => Ok(false),
1 => Ok(true),
unexp => Err(DeError::invalid_value(
Unexpected::Unsigned(unexp as u64),
&"0 or 1",
)),
}
}
fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E>
where
E: DeError,
{
match v {
0 => Ok(false),
1 => Ok(true),
unexp => Err(DeError::invalid_value(
Unexpected::Signed(unexp as i64),
&"0 or 1",
)),
}
}
fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
where
E: DeError,
{
match v {
0 => Ok(false),
1 => Ok(true),
unexp => Err(DeError::invalid_value(
Unexpected::Unsigned(unexp),
&"0 or 1",
)),
}
}
fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
where
E: DeError,
{
match v {
0 => Ok(false),
1 => Ok(true),
unexp => Err(DeError::invalid_value(Unexpected::Signed(unexp), &"0 or 1")),
}
}
fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>
where
E: DeError,
{
match v {
0 => Ok(false),
1 => Ok(true),
unexp => Err(DeError::invalid_value(
Unexpected::Unsigned(unexp as u64),
&"0 or 1",
)),
}
}
fn visit_i128<E>(self, v: i128) -> Result<Self::Value, E>
where
E: DeError,
{
match v {
0 => Ok(false),
1 => Ok(true),
unexp => Err(DeError::invalid_value(
Unexpected::Signed(unexp as i64),
&"0 or 1",
)),
}
}
}
deserializer.deserialize_u8(U8Visitor)
}
}
impl<'de> DeserializeAs<'de, bool> for BoolFromInt<Flexible> {
fn deserialize_as<D>(deserializer: D) -> Result<bool, D::Error>
where
D: Deserializer<'de>,
{
struct U8Visitor;
impl<'de> Visitor<'de> for U8Visitor {
type Value = bool;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str("an integer")
}
fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v != 0)
}
fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v != 0)
}
fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v != 0)
}
fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v != 0)
}
fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v != 0)
}
fn visit_i128<E>(self, v: i128) -> Result<Self::Value, E>
where
E: DeError,
{
Ok(v != 0)
}
}
deserializer.deserialize_u8(U8Visitor)
}
}
// endregion