Upgrade borsh to 1.0 (#27)

Cargo.toml

@@ -13,16 +13,27 @@ repository = "https://github.com/sovereign-labs/nmt-rs"
 [dependencies]
 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 }
+serde = { version = "1", default-features = false, optional = true, features = ["derive"] }
+borsh = { version = "1", default-features = false, features = ["derive"], optional = true }
 
 [dev-dependencies]
-borsh = { version = "0.10.0" }
+nmt-rs = { path = ".", features = ["borsh", "serde"] }
+borsh = { version = "1" }
 serde_json = "1.0.96"
-postcard = { version = "1.0.4" }
-tendermint = {version = "0.35.0"}
+postcard = { version = "1.0.4", features = ["use-std"] }
+tendermint = { version = "0.35.0" }
 
 [features]
 default = ["std"]
-serde = ["dep:serde", "postcard/use-std"]
-std = []
+borsh = ["dep:borsh"]
+serde = [
+	"dep:serde",
+	"bytes/serde",
+	"nmt-rs/serde"
+]
+std = [
+	"borsh?/std",
+	"serde?/std",
+	"bytes/std",
+	"sha2/std"
+]

src/namespaced_hash.rs

@@ -197,9 +197,7 @@ 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>(
-        reader: &mut R,
-    ) -> borsh::maybestd::io::Result<Self> {
+    fn deserialize_reader<R: borsh::io::Read>(reader: &mut R) -> borsh::io::Result<Self> {
         let mut min_ns = NamespaceId([0u8; NS_ID_SIZE]);
         reader.read_exact(&mut min_ns.0)?;
 
@@ -399,15 +397,12 @@ impl<const NS_ID_SIZE: usize> TryFrom<&[u8]> for NamespacedHash<NS_ID_SIZE> {
 mod tests {
     use crate::NamespacedHash;
     use borsh::de::BorshDeserialize;
-    use borsh::ser::BorshSerialize;
 
     #[test]
     fn test_namespaced_hash_borsh() {
         let hash = NamespacedHash::<8>::try_from([8u8; 48].as_ref()).unwrap();
 
-        let serialized = hash
-            .try_to_vec()
-            .expect("Serialization to vec must succeed");
+        let serialized = borsh::to_vec(&hash).expect("Serialization to vec must succeed");
 
         let got =
             NamespacedHash::deserialize(&mut &serialized[..]).expect("serialized hash is correct");

src/simple_merkle/tree.rs

@@ -48,27 +48,53 @@ impl<Db: PreimageDb<<M as MerkleHash>::Output>, M: MerkleHash + Default> Default
 
 /// A trait for hashing data into a merkle tree
 pub trait MerkleHash {
-    /// The output of this hasher
-    #[cfg(all(not(feature = "serde"), feature = "std"))]
+    // --- no-std
+    /// The output of this hasher.
+    #[cfg(all(not(feature = "serde"), not(feature = "borsh"), not(feature = "std")))]
     type Output: Debug + PartialEq + Eq + Clone + Default + Hash;
 
-    /// The output of this hasher
-    #[cfg(all(not(feature = "serde"), not(feature = "std")))]
-    type Output: Debug + PartialEq + Eq + Clone + Default + Hash + Ord;
+    /// The output of this hasher.
+    #[cfg(all(feature = "serde", not(feature = "borsh"), not(feature = "std")))]
+    type Output: Debug
+        + PartialEq
+        + Eq
+        + Clone
+        + Default
+        + Hash
+        + serde::Serialize
+        + serde::de::DeserializeOwned;
 
-    /// The output of this hasher
-    #[cfg(all(feature = "serde", not(feature = "std")))]
+    /// The output of this hasher.
+    #[cfg(all(feature = "borsh", not(feature = "serde"), not(feature = "std")))]
     type Output: Debug
         + PartialEq
         + Eq
         + Clone
         + Default
         + Hash
+        + borsh::BorshSerialize
+        + borsh::BorshDeserialize;
+
+    /// The output of this hasher.
+    #[cfg(all(feature = "borsh", feature = "serde", not(feature = "std")))]
+    type Output: Debug
+        + PartialEq
+        + Eq
+        + Clone
+        + Default
+        + Hash
+        + borsh::BorshSerialize
+        + borsh::BorshDeserialize
         + serde::Serialize
         + serde::de::DeserializeOwned;
 
-    /// The output of this hasher
-    #[cfg(all(feature = "serde", feature = "std"))]
+    // --- std
+    /// The output of this hasher.
+    #[cfg(all(not(feature = "serde"), not(feature = "borsh"), feature = "std"))]
+    type Output: Debug + PartialEq + Eq + Clone + Default + Hash + Ord;
+
+    /// The output of this hasher.
+    #[cfg(all(feature = "serde", not(feature = "borsh"), feature = "std"))]
     type Output: Debug
         + PartialEq
         + Eq
@@ -79,12 +105,38 @@ pub trait MerkleHash {
         + serde::Serialize
         + serde::de::DeserializeOwned;
 
-    /// The hash of the empty tree. This is often defined as the hash of the empty string
+    /// The output of this hasher.
+    #[cfg(all(not(feature = "serde"), feature = "borsh", feature = "std"))]
+    type Output: Debug
+        + PartialEq
+        + Eq
+        + Clone
+        + Default
+        + Hash
+        + Ord
+        + borsh::BorshSerialize
+        + borsh::BorshDeserialize;
+
+    /// 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;
 
-    /// Hashes data as a "leaf" of the tree. This operation *should* be domain separated
+    /// Hashes data as a "leaf" of the tree. This operation *should* be domain separated.
     fn hash_leaf(&self, data: &[u8]) -> Self::Output;
-    /// Hashes two digests into one. This operation *should* be domain separated
+    /// Hashes two digests into one. This operation *should* be domain separated.
     fn hash_nodes(&self, l: &Self::Output, r: &Self::Output) -> Self::Output;
 }