Implement Extends for Base

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Unreleased
 
+# 0.7.0-alpha.7
+- implement Extends for Base
+
 # 0.7.0-alpha.6
 - Add Actor and AsApActor impls for ApObject
 

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "activitystreams"
 description = "A set of core types and traits for activitystreams data"
-version = "0.7.0-alpha.6"
+version = "0.7.0-alpha.7"
 license = "GPL-3.0"
 authors = ["asonix <asonix@asonix.dog>"]
 repository = "https://git.asonix.dog/Aardwolf/activitystreams"

src/base.rs

@@ -1850,6 +1850,18 @@ impl<Kind> AsBase<Kind> for Base<Kind> {
     }
 }
 
+impl<Kind> Extends<Kind> for Base<Kind> {
+    type Error = std::convert::Infallible;
+
+    fn extends(base: Base<Kind>) -> Result<Self, Self::Error> {
+        Ok(base)
+    }
+
+    fn retracts(self) -> Result<Base<Kind>, Self::Error> {
+        Ok(self)
+    }
+}
+
 impl<T, Kind> ExtendsExt<Kind> for T
 where
     T: Extends<Kind>,