Upgrade borsh to 1.0

Cargo.toml

@@ -14,15 +14,16 @@ repository = "https://github.com/sovereign-labs/nmt-rs"
 sha2 = { version = "0.10.6", default-features = false }
 bytes = { version = "1", default-features = false }
 serde = { version = "1", optional = true, features = ["derive"] }
-borsh = { version = "0.10.0", optional = true }
+borsh = { version = "1", features = ["derive"], optional = true }
 
 [dev-dependencies]
-borsh = { version = "0.10.0" }
+borsh = { version = "1" }
 serde_json = "1.0.96"
 postcard = { version = "1.0.4" }
-tendermint = {version = "0.35.0"}
+tendermint = { version = "0.35.0" }
 
 [features]
 default = ["std"]
-serde = ["dep:serde", "postcard/use-std"]
 std = []
+serde = ["dep:serde", "postcard/use-std"]
+borsh = ["dep:borsh", "std"]

src/namespaced_hash.rs

@@ -197,9 +197,9 @@ pub struct NamespacedHash<const NS_ID_SIZE: usize> {
 
 #[cfg(any(test, feature = "borsh"))]
 impl<const NS_ID_SIZE: usize> borsh::BorshDeserialize for NamespacedHash<NS_ID_SIZE> {
-    fn deserialize_reader<R: borsh::maybestd::io::Read>(
+    fn deserialize_reader<R: std::io::Read>(
         reader: &mut R,
-    ) -> borsh::maybestd::io::Result<Self> {
+    ) -> std::io::Result<Self> {
         let mut min_ns = NamespaceId([0u8; NS_ID_SIZE]);
         reader.read_exact(&mut min_ns.0)?;
 

src/simple_merkle/tree.rs

@@ -68,7 +68,7 @@ pub trait MerkleHash {
         + serde::de::DeserializeOwned;
 
     /// The output of this hasher
-    #[cfg(all(feature = "serde", feature = "std"))]
+    #[cfg(all(feature = "serde", not(feature = "borsh"), feature = "std"))]
     type Output: Debug
         + PartialEq
         + Eq
@@ -79,6 +79,20 @@ pub trait MerkleHash {
         + serde::Serialize
         + serde::de::DeserializeOwned;
 
+    /// The output of this hasher
+    #[cfg(all(feature = "serde", feature = "borsh", feature = "std"))]
+    type Output: Debug
+    + PartialEq
+    + Eq
+    + Clone
+    + Default
+    + Hash
+    + Ord
+    + serde::Serialize
+    + serde::de::DeserializeOwned
+    + borsh::BorshSerialize
+    + borsh::BorshDeserialize;
+
     /// The hash of the empty tree. This is often defined as the hash of the empty string
     const EMPTY_ROOT: Self::Output;