Add serde feature for merde/merde_core for CowStr

merde/Cargo.toml

@@ -35,5 +35,8 @@ default = ["core", "deserialize"]
 full = ["core", "deserialize", "json", "time"]
 deserialize = ["core"]
 core = ["dep:merde_core"]
+compact_str = ["merde_core/compact_str"]
+serde = ["merde_core/serde"]
+
 json = ["dep:merde_json"]
 time = ["dep:merde_time"]

merde_core/Cargo.toml

@@ -12,8 +12,10 @@ categories = ["encoding", "parser-implementations"]
 
 [dependencies]
 compact_str = { version = "0.8.0", optional = true }
+serde = { version = "1", optional = true }
 
 [features]
 default = []
-full = ["compact_str"]
+full = ["compact_str", "serde"]
 compact_str = ["dep:compact_str"]
+serde = ["dep:serde", "compact_str/serde"]

merde_core/src/cowstr.rs

@@ -125,3 +125,34 @@ impl IntoStatic for CowStr<'_> {
         }
     }
 }
+
+#[cfg(feature = "serde")]
+mod serde_impls {
+    use super::*;
+
+    use serde::{Deserialize, Serialize};
+
+    impl Serialize for CowStr<'_> {
+        fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+        where
+            S: serde::Serializer,
+        {
+            serializer.serialize_str(self)
+        }
+    }
+
+    impl<'de> Deserialize<'de> for CowStr<'_> {
+        fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+        where
+            D: serde::Deserializer<'de>,
+        {
+            #[cfg(feature = "compact_str")]
+            let s = compact_str::CompactString::deserialize(deserializer)?;
+
+            #[cfg(not(feature = "compact_str"))]
+            let s = String::deserialize(deserializer)?;
+
+            Ok(CowStr::Owned(s))
+        }
+    }
+}

zerodeps-example/Cargo.toml

@@ -6,8 +6,7 @@ publish = false
 
 [dependencies]
 merde = { version = "4.0.0", path = "../merde", default-features = false }
-merdelcore = { version = "4.0.0", path = "../merde_core", default-features = false }
 
 [features]
 default = []
-merde = ["merde/core", "merde_core/compact_str"]
+merde = ["merde/core", "merde/compact_str"]