refactor: generic magic for addressable/asmultihash

base/src/addressing.rs

@@ -242,6 +242,8 @@ pub trait Addressable: AsMultihash {
     }
 }
 
+impl<T> Addressable for T where T: AsMultihash {}
+
 #[cfg(test)]
 mod tests {
     use url::Url;

base/src/entry.rs

@@ -1,4 +1,4 @@
-use crate::addressing::{Address, Addressable};
+use crate::addressing::Address;
 use crate::error::UpEndError;
 use crate::hash::{b58_decode, sha256hash, AsMultihash, AsMultihashError, UpMultihash};
 use chrono::NaiveDateTime;
@@ -110,9 +110,6 @@ impl AsMultihash for InvariantEntry {
     }
 }
 
-impl Addressable for Entry {}
-impl Addressable for InvariantEntry {}
-
 impl EntryValue {
     pub fn to_string(&self) -> Result<String, UpEndError> {
         let (type_char, content) = match self {

base/src/hash.rs

@@ -154,6 +154,15 @@ pub trait AsMultihash {
     fn as_multihash(&self) -> Result<UpMultihash, AsMultihashError>;
 }
 
+impl<T> AsMultihash for T
+where
+    T: AsRef<[u8]>,
+{
+    fn as_multihash(&self) -> Result<UpMultihash, AsMultihashError> {
+        sha256hash(self)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use crate::hash::{b58_decode, b58_encode};