From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 third_party/rust/indexmap/src/serde.rs | 155 +++++++++++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 third_party/rust/indexmap/src/serde.rs

(limited to 'third_party/rust/indexmap/src/serde.rs')

diff --git a/third_party/rust/indexmap/src/serde.rs b/third_party/rust/indexmap/src/serde.rs
new file mode 100644
index 0000000000..c6dd6d5ea0
--- /dev/null
+++ b/third_party/rust/indexmap/src/serde.rs
@@ -0,0 +1,155 @@
+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 crate::IndexMap;
+
+/// Requires crate feature `"serde"` or `"serde-1"`
+impl<K, V, S> Serialize for IndexMap<K, V, S>
+where
+    K: Serialize + Hash + Eq,
+    V: Serialize,
+    S: BuildHasher,
+{
+    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 mut values =
+            IndexMap::with_capacity_and_hasher(map.size_hint().unwrap_or(0), S::default());
+
+        while let Some((key, value)) = map.next_entry()? {
+            values.insert(key, value);
+        }
+
+        Ok(values)
+    }
+}
+
+/// Requires crate feature `"serde"` or `"serde-1"`
+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())
+    }
+}
+
+use crate::IndexSet;
+
+/// Requires crate feature `"serde"` or `"serde-1"`
+impl<T, S> Serialize for IndexSet<T, S>
+where
+    T: Serialize + Hash + Eq,
+    S: BuildHasher,
+{
+    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 mut values =
+            IndexSet::with_capacity_and_hasher(seq.size_hint().unwrap_or(0), S::default());
+
+        while let Some(value) = seq.next_element()? {
+            values.insert(value);
+        }
+
+        Ok(values)
+    }
+}
+
+/// Requires crate feature `"serde"` or `"serde-1"`
+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())
+    }
+}
-- 
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