chore: bump version for extism-convert

convert/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "extism-convert"
-version = "0.2.0"
+version = "0.3.0"
 edition = "2021"
 authors = ["The Extism Authors", "oss@extism.org"]
 license = "BSD-3-Clause"
@@ -13,14 +13,16 @@ description = "Traits to make Rust types usable with Extism"
 anyhow = "1.0.75"
 base64 = "0.21.3"
 prost = { version = "0.12.0", optional = true }
+protobuf = { version = "3.3.0", optional = true }
 rmp-serde = { version = "1.1.2", optional = true }
 serde = "1.0.186"
 serde_json = "1.0.105"
 
 [dev-dependencies]
-serde = {version = "1.0.186", features = ["derive"]}
+serde = { version = "1.0.186", features = ["derive"] }
 
 [features]
-default = ["msgpack", "protobuf"]
+default = ["msgpack", "prost"]
 msgpack = ["rmp-serde"]
-protobuf = ["prost"]
+prost = ["prost"]
+protobuf = ["protobuf"]

convert/src/encoding.rs

@@ -98,10 +98,10 @@ impl FromBytesOwned for Base64<String> {
 /// Protobuf encoding
 ///
 /// Allows for `prost` Protobuf messages to be used as arguments to Extism plugin calls
-#[cfg(feature = "protobuf")]
+#[cfg(feature = "prost")]
 pub struct Protobuf<T: prost::Message>(pub T);
 
-#[cfg(feature = "protobuf")]
+#[cfg(feature = "prost")]
 impl<'a, T: prost::Message> ToBytes<'a> for Protobuf<T> {
     type Bytes = Vec<u8>;
 
@@ -110,9 +110,31 @@ impl<'a, T: prost::Message> ToBytes<'a> for Protobuf<T> {
     }
 }
 
-#[cfg(feature = "protobuf")]
+#[cfg(feature = "prost")]
 impl<T: Default + prost::Message> FromBytesOwned for Protobuf<T> {
     fn from_bytes_owned(data: &[u8]) -> Result<Self, Error> {
         Ok(Protobuf(T::decode(data)?))
     }
 }
+
+/// Protobuf encoding
+///
+/// Allows for `protobuf` Protobuf messages to be used as arguments to Extism plugin calls
+#[cfg(feature = "protobuf")]
+pub struct Protobuf<T: protobuf::Message>(pub T);
+
+#[cfg(feature = "protobuf")]
+impl<'a, T: protobuf::Message> ToBytes<'a> for Protobuf<T> {
+    type Bytes = Vec<u8>;
+
+    fn to_bytes(&self) -> Result<Self::Bytes, Error> {
+        Ok(self.0.write_to_bytes()?)
+    }
+}
+
+#[cfg(feature = "protobuf")]
+impl<'a, T: Default + protobuf::Message> FromBytesOwned for Protobuf<T> {
+    fn from_bytes_owned(data: &[u8]) -> Result<Self, Error> {
+        Ok(Protobuf(T::parse_from_bytes(data)?))
+    }
+}