1 files changed, 739 insertions, 0 deletions
diff --git a/third_party/rust/serde_with/src/ser/impls.rs b/third_party/rust/serde_with/src/ser/impls.rs
new file mode 100644
index 0000000000..16a8fb913c
--- /dev/null
+++ b/third_party/rust/serde_with/src/ser/impls.rs
@@ -0,0 +1,739 @@
+use super::*;
+use crate::{
+    formats::Strictness, rust::StringWithSeparator, utils::duration::DurationSigned, Separator,
+};
+use alloc::{
+    borrow::Cow,
+    boxed::Box,
+    collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque},
+    rc::{Rc, Weak as RcWeak},
+    string::{String, ToString},
+    sync::{Arc, Weak as ArcWeak},
+    vec::Vec,
+};
+use core::{
+    cell::{Cell, RefCell},
+    convert::TryInto,
+    fmt::Display,
+    time::Duration,
+};
+#[cfg(feature = "indexmap")]
+use indexmap_crate::{IndexMap, IndexSet};
+use serde::ser::Error;
+use std::{
+    collections::{HashMap, HashSet},
+    sync::{Mutex, RwLock},
+    time::SystemTime,
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// region: Simple Wrapper types (e.g., Box, Option)
+
+impl<'a, T, U> SerializeAs<&'a T> for &'a U
+where
+    U: SerializeAs<T>,
+    T: ?Sized,
+    U: ?Sized,
+{
+    fn serialize_as<S>(source: &&'a T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, U>::new(source).serialize(serializer)
+    }
+}
+
+impl<'a, T, U> SerializeAs<&'a mut T> for &'a mut U
+where
+    U: SerializeAs<T>,
+    T: ?Sized,
+    U: ?Sized,
+{
+    fn serialize_as<S>(source: &&'a mut T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, U>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<Box<T>> for Box<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Box<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, U>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<Option<T>> for Option<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Option<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match *source {
+            Some(ref value) => serializer.serialize_some(&SerializeAsWrap::<T, U>::new(value)),
+            None => serializer.serialize_none(),
+        }
+    }
+}
+
+impl<T, U> SerializeAs<Rc<T>> for Rc<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Rc<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, U>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<RcWeak<T>> for RcWeak<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &RcWeak<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<Option<Rc<T>>, Option<Rc<U>>>::new(&source.upgrade())
+            .serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<Arc<T>> for Arc<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Arc<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, U>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<ArcWeak<T>> for ArcWeak<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &ArcWeak<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<Option<Arc<T>>, Option<Arc<U>>>::new(&source.upgrade())
+            .serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<Cell<T>> for Cell<U>
+where
+    U: SerializeAs<T>,
+    T: Copy,
+{
+    fn serialize_as<S>(source: &Cell<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, U>::new(&source.get()).serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<RefCell<T>> for RefCell<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &RefCell<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match source.try_borrow() {
+            Ok(source) => SerializeAsWrap::<T, U>::new(&*source).serialize(serializer),
+            Err(_) => Err(S::Error::custom("already mutably borrowed")),
+        }
+    }
+}
+
+impl<T, U> SerializeAs<Mutex<T>> for Mutex<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Mutex<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match source.lock() {
+            Ok(source) => SerializeAsWrap::<T, U>::new(&*source).serialize(serializer),
+            Err(_) => Err(S::Error::custom("lock poison error while serializing")),
+        }
+    }
+}
+
+impl<T, U> SerializeAs<RwLock<T>> for RwLock<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &RwLock<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match source.read() {
+            Ok(source) => SerializeAsWrap::<T, U>::new(&*source).serialize(serializer),
+            Err(_) => Err(S::Error::custom("lock poison error while serializing")),
+        }
+    }
+}
+
+impl<T, TAs, E, EAs> SerializeAs<Result<T, E>> for Result<TAs, EAs>
+where
+    TAs: SerializeAs<T>,
+    EAs: SerializeAs<E>,
+{
+    fn serialize_as<S>(source: &Result<T, E>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        source
+            .as_ref()
+            .map(SerializeAsWrap::<T, TAs>::new)
+            .map_err(SerializeAsWrap::<E, EAs>::new)
+            .serialize(serializer)
+    }
+}
+
+// endregion
+///////////////////////////////////////////////////////////////////////////////
+// region: Collection Types (e.g., Maps, Sets, Vec)
+
+macro_rules! seq_impl {
+    ($ty:ident < T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound:ident )* >) => {
+        impl<T, U $(, $typaram)*> SerializeAs<$ty<T $(, $typaram)*>> for $ty<U $(, $typaram)*>
+        where
+            U: SerializeAs<T>,
+            $(T: ?Sized + $tbound1 $(+ $tbound2)*,)*
+            $($typaram: ?Sized + $bound,)*
+        {
+            fn serialize_as<S>(source: &$ty<T $(, $typaram)*>, serializer: S) -> Result<S::Ok, S::Error>
+            where
+                S: Serializer,
+            {
+                serializer.collect_seq(source.iter().map(|item| SerializeAsWrap::<T, U>::new(item)))
+            }
+        }
+    }
+}
+
+type BoxedSlice<T> = Box<[T]>;
+type Slice<T> = [T];
+seq_impl!(BinaryHeap<T>);
+seq_impl!(BoxedSlice<T>);
+seq_impl!(BTreeSet<T>);
+seq_impl!(HashSet<T, H: Sized>);
+seq_impl!(LinkedList<T>);
+seq_impl!(Slice<T>);
+seq_impl!(Vec<T>);
+seq_impl!(VecDeque<T>);
+#[cfg(feature = "indexmap")]
+seq_impl!(IndexSet<T, H: Sized>);
+
+macro_rules! map_impl {
+    ($ty:ident < K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V $(, $typaram:ident : $bound:ident)* >) => {
+        impl<K, KU, V, VU $(, $typaram)*> SerializeAs<$ty<K, V $(, $typaram)*>> for $ty<KU, VU $(, $typaram)*>
+        where
+            KU: SerializeAs<K>,
+            VU: SerializeAs<V>,
+            $(K: ?Sized + $kbound1 $(+ $kbound2)*,)*
+            $($typaram: ?Sized + $bound,)*
+        {
+            fn serialize_as<S>(source: &$ty<K, V $(, $typaram)*>, serializer: S) -> Result<S::Ok, S::Error>
+            where
+                S: Serializer,
+            {
+                serializer.collect_map(source.iter().map(|(k, v)| (SerializeAsWrap::<K, KU>::new(k), SerializeAsWrap::<V, VU>::new(v))))
+            }
+        }
+    }
+}
+
+map_impl!(BTreeMap<K, V>);
+map_impl!(HashMap<K, V, H: Sized>);
+#[cfg(feature = "indexmap")]
+map_impl!(IndexMap<K, V, H: Sized>);
+
+macro_rules! tuple_impl {
+    ($len:literal $($n:tt $t:ident $tas:ident)+) => {
+        impl<$($t, $tas,)+> SerializeAs<($($t,)+)> for ($($tas,)+)
+        where
+            $($tas: SerializeAs<$t>,)+
+        {
+            fn serialize_as<S>(tuple: &($($t,)+), serializer: S) -> Result<S::Ok, S::Error>
+            where
+                S: Serializer,
+            {
+                use serde::ser::SerializeTuple;
+                let mut tup = serializer.serialize_tuple($len)?;
+                $(
+                    tup.serialize_element(&SerializeAsWrap::<$t, $tas>::new(&tuple.$n))?;
+                )+
+                tup.end()
+            }
+        }
+    };
+}
+
+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);
+
+macro_rules! map_as_tuple_seq {
+    ($ty:ident < K $(: $kbound1:ident $(+ $kbound2:ident)*)*, V >) => {
+        impl<K, KAs, V, VAs> SerializeAs<$ty<K, V>> for Vec<(KAs, VAs)>
+        where
+            KAs: SerializeAs<K>,
+            VAs: SerializeAs<V>,
+        {
+            fn serialize_as<S>(source: &$ty<K, V>, serializer: S) -> Result<S::Ok, S::Error>
+            where
+                S: Serializer,
+            {
+                serializer.collect_seq(source.iter().map(|(k, v)| {
+                    (
+                        SerializeAsWrap::<K, KAs>::new(k),
+                        SerializeAsWrap::<V, VAs>::new(v),
+                    )
+                }))
+            }
+        }
+    };
+}
+map_as_tuple_seq!(BTreeMap<K, V>);
+// TODO HashMap with a custom hasher support would be better, but results in "unconstrained type parameter"
+map_as_tuple_seq!(HashMap<K, V>);
+#[cfg(feature = "indexmap")]
+map_as_tuple_seq!(IndexMap<K, V>);
+
+// endregion
+///////////////////////////////////////////////////////////////////////////////
+// region: Conversion types which cause different serialization behavior
+
+impl<T> SerializeAs<T> for Same
+where
+    T: Serialize + ?Sized,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        source.serialize(serializer)
+    }
+}
+
+impl<T> SerializeAs<T> for DisplayFromStr
+where
+    T: Display,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        crate::rust::display_fromstr::serialize(source, serializer)
+    }
+}
+
+impl<T, U> SerializeAs<Vec<T>> for VecSkipError<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Vec<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        Vec::<U>::serialize_as(source, serializer)
+    }
+}
+
+impl<AsRefStr> SerializeAs<Option<AsRefStr>> for NoneAsEmptyString
+where
+    AsRefStr: AsRef<str>,
+{
+    fn serialize_as<S>(source: &Option<AsRefStr>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        crate::rust::string_empty_as_none::serialize(source, serializer)
+    }
+}
+
+macro_rules! tuple_seq_as_map_impl_intern {
+    ($tyorig:ty, $ty:ident <K, V>) => {
+        #[allow(clippy::implicit_hasher)]
+        impl<K, KAs, V, VAs> SerializeAs<$tyorig> for $ty<KAs, VAs>
+        where
+            KAs: SerializeAs<K>,
+            VAs: SerializeAs<V>,
+        {
+            fn serialize_as<S>(source: &$tyorig, serializer: S) -> Result<S::Ok, S::Error>
+            where
+                S: Serializer,
+            {
+                serializer.collect_map(source.iter().map(|(k, v)| {
+                    (
+                        SerializeAsWrap::<K, KAs>::new(k),
+                        SerializeAsWrap::<V, VAs>::new(v),
+                    )
+                }))
+            }
+        }
+    };
+}
+macro_rules! tuple_seq_as_map_impl {
+    ($($ty:ty $(,)?)+) => {$(
+        tuple_seq_as_map_impl_intern!($ty, BTreeMap<K, V>);
+        tuple_seq_as_map_impl_intern!($ty, HashMap<K, V>);
+    )+}
+}
+
+tuple_seq_as_map_impl! {
+    BinaryHeap<(K, V)>,
+    BTreeSet<(K, V)>,
+    LinkedList<(K, V)>,
+    Option<(K, V)>,
+    Vec<(K, V)>,
+    VecDeque<(K, V)>,
+}
+tuple_seq_as_map_impl!(HashSet<(K, V)>);
+#[cfg(feature = "indexmap")]
+tuple_seq_as_map_impl!(IndexSet<(K, V)>);
+
+impl<T, TAs> SerializeAs<T> for DefaultOnError<TAs>
+where
+    TAs: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        TAs::serialize_as(source, serializer)
+    }
+}
+
+impl SerializeAs<Vec<u8>> for BytesOrString {
+    fn serialize_as<S>(source: &Vec<u8>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        source.serialize(serializer)
+    }
+}
+
+impl<SEPARATOR, I, T> SerializeAs<I> for StringWithSeparator<SEPARATOR, T>
+where
+    SEPARATOR: Separator,
+    for<'a> &'a I: IntoIterator<Item = &'a T>,
+    T: ToString,
+{
+    fn serialize_as<S>(source: &I, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut s = String::new();
+        for v in source {
+            s.push_str(&*v.to_string());
+            s.push_str(SEPARATOR::separator());
+        }
+        serializer.serialize_str(if !s.is_empty() {
+            // remove trailing separator if present
+            &s[..s.len() - SEPARATOR::separator().len()]
+        } else {
+            &s[..]
+        })
+    }
+}
+
+macro_rules! use_signed_duration {
+    (
+        $main_trait:ident $internal_trait:ident =>
+        {
+            $ty:ty =>
+            $({
+                $format:ty, $strictness:ty =>
+                $($tbound:ident: $bound:ident $(,)?)*
+            })*
+        }
+    ) => {
+        $(
+            impl<$($tbound,)*> SerializeAs<$ty> for $main_trait<$format, $strictness>
+            where
+                $($tbound: $bound,)*
+            {
+                fn serialize_as<S>(source: &$ty, serializer: S) -> Result<S::Ok, S::Error>
+                where
+                    S: Serializer,
+                {
+                    $internal_trait::<$format, $strictness>::serialize_as(
+                        &DurationSigned::from(source),
+                        serializer,
+                    )
+                }
+            }
+        )*
+    };
+    (
+        $( $main_trait:ident $internal_trait:ident, )+ => $rest:tt
+    ) => {
+        $( use_signed_duration!($main_trait $internal_trait => $rest); )+
+    };
+}
+
+use_signed_duration!(
+    DurationSeconds DurationSeconds,
+    DurationMilliSeconds DurationMilliSeconds,
+    DurationMicroSeconds DurationMicroSeconds,
+    DurationNanoSeconds DurationNanoSeconds,
+    => {
+        Duration =>
+        {u64, STRICTNESS => STRICTNESS: Strictness}
+        {f64, STRICTNESS => STRICTNESS: Strictness}
+        {String, STRICTNESS => STRICTNESS: Strictness}
+    }
+);
+use_signed_duration!(
+    DurationSecondsWithFrac DurationSecondsWithFrac,
+    DurationMilliSecondsWithFrac DurationMilliSecondsWithFrac,
+    DurationMicroSecondsWithFrac DurationMicroSecondsWithFrac,
+    DurationNanoSecondsWithFrac DurationNanoSecondsWithFrac,
+    => {
+        Duration =>
+        {f64, STRICTNESS => STRICTNESS: Strictness}
+        {String, STRICTNESS => STRICTNESS: Strictness}
+    }
+);
+
+use_signed_duration!(
+    TimestampSeconds DurationSeconds,
+    TimestampMilliSeconds DurationMilliSeconds,
+    TimestampMicroSeconds DurationMicroSeconds,
+    TimestampNanoSeconds DurationNanoSeconds,
+    => {
+        SystemTime =>
+        {i64, STRICTNESS => STRICTNESS: Strictness}
+        {f64, STRICTNESS => STRICTNESS: Strictness}
+        {String, STRICTNESS => STRICTNESS: Strictness}
+    }
+);
+use_signed_duration!(
+    TimestampSecondsWithFrac DurationSecondsWithFrac,
+    TimestampMilliSecondsWithFrac DurationMilliSecondsWithFrac,
+    TimestampMicroSecondsWithFrac DurationMicroSecondsWithFrac,
+    TimestampNanoSecondsWithFrac DurationNanoSecondsWithFrac,
+    => {
+        SystemTime =>
+        {f64, STRICTNESS => STRICTNESS: Strictness}
+        {String, STRICTNESS => STRICTNESS: Strictness}
+    }
+);
+
+impl<T, U> SerializeAs<T> for DefaultOnNull<U>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_some(&SerializeAsWrap::<T, U>::new(source))
+    }
+}
+
+impl SerializeAs<&[u8]> for Bytes {
+    fn serialize_as<S>(bytes: &&[u8], serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_bytes(bytes)
+    }
+}
+
+impl SerializeAs<Vec<u8>> for Bytes {
+    fn serialize_as<S>(bytes: &Vec<u8>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_bytes(bytes)
+    }
+}
+
+impl SerializeAs<Box<[u8]>> for Bytes {
+    fn serialize_as<S>(bytes: &Box<[u8]>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_bytes(bytes)
+    }
+}
+
+impl<'a> SerializeAs<Cow<'a, [u8]>> for Bytes {
+    fn serialize_as<S>(bytes: &Cow<'a, [u8]>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_bytes(bytes)
+    }
+}
+
+impl<T, U> SerializeAs<Vec<T>> for OneOrMany<U, formats::PreferOne>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Vec<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match source.len() {
+            1 => SerializeAsWrap::<T, U>::new(source.iter().next().expect("Cannot be empty"))
+                .serialize(serializer),
+            _ => SerializeAsWrap::<Vec<T>, Vec<U>>::new(source).serialize(serializer),
+        }
+    }
+}
+
+impl<T, U> SerializeAs<Vec<T>> for OneOrMany<U, formats::PreferMany>
+where
+    U: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &Vec<T>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<Vec<T>, Vec<U>>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, TAs1> SerializeAs<T> for PickFirst<(TAs1,)>
+where
+    TAs1: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, TAs1>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, TAs1, TAs2> SerializeAs<T> for PickFirst<(TAs1, TAs2)>
+where
+    TAs1: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, TAs1>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, TAs1, TAs2, TAs3> SerializeAs<T> for PickFirst<(TAs1, TAs2, TAs3)>
+where
+    TAs1: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, TAs1>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, TAs1, TAs2, TAs3, TAs4> SerializeAs<T> for PickFirst<(TAs1, TAs2, TAs3, TAs4)>
+where
+    TAs1: SerializeAs<T>,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        SerializeAsWrap::<T, TAs1>::new(source).serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<T> for FromInto<U>
+where
+    T: Into<U> + Clone,
+    U: Serialize,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        source.clone().into().serialize(serializer)
+    }
+}
+
+impl<T, U> SerializeAs<T> for TryFromInto<U>
+where
+    T: TryInto<U> + Clone,
+    <T as TryInto<U>>::Error: Display,
+    U: Serialize,
+{
+    fn serialize_as<S>(source: &T, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        source
+            .clone()
+            .try_into()
+            .map_err(S::Error::custom)?
+            .serialize(serializer)
+    }
+}
+
+impl<'a> SerializeAs<Cow<'a, str>> for BorrowCow {
+    fn serialize_as<S>(source: &Cow<'a, str>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(source)
+    }
+}
+
+impl<'a> SerializeAs<Cow<'a, [u8]>> for BorrowCow {
+    fn serialize_as<S>(value: &Cow<'a, [u8]>, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.collect_seq(value.iter())
+    }
+}
+
+impl<STRICTNESS: Strictness> SerializeAs<bool> for BoolFromInt<STRICTNESS> {
+    fn serialize_as<S>(source: &bool, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_u8(*source as u8)
+    }
+}
+
+// endregion