chore: make clippy happy (#17)

src/hash_builder/mod.rs

@@ -228,7 +228,7 @@ impl HashBuilder {
                         trace!(target: "trie::hash_builder", ?leaf_node, "pushing leaf node");
                         trace!(target: "trie::hash_builder", rlp = {
                             self.rlp_buf.clear();
-                            hex::encode(&leaf_node.rlp(&mut self.rlp_buf))
+                            hex::encode(leaf_node.rlp(&mut self.rlp_buf))
                         }, "leaf node rlp");
 
                         self.rlp_buf.clear();
@@ -259,7 +259,7 @@ impl HashBuilder {
                 trace!(target: "trie::hash_builder", ?extension_node, "pushing extension node");
                 trace!(target: "trie::hash_builder", rlp = {
                     self.rlp_buf.clear();
-                    hex::encode(&extension_node.rlp(&mut self.rlp_buf))
+                    hex::encode(extension_node.rlp(&mut self.rlp_buf))
                 }, "extension node rlp");
 
                 self.rlp_buf.clear();

src/nodes/branch.rs

@@ -75,7 +75,7 @@ impl Decodable for BranchNode {
 
 impl BranchNode {
     /// Creates a new branch node with the given stack and state mask.
-    pub fn new(stack: Vec<Vec<u8>>, state_mask: TrieMask) -> Self {
+    pub const fn new(stack: Vec<Vec<u8>>, state_mask: TrieMask) -> Self {
         Self { stack, state_mask }
     }
 

src/nodes/extension.rs

@@ -69,7 +69,7 @@ impl ExtensionNode {
     pub const ODD_FLAG: u8 = 0x10;
 
     /// Creates a new extension node with the given key and a pointer to the child.
-    pub fn new(key: Nibbles, child: Vec<u8>) -> Self {
+    pub const fn new(key: Nibbles, child: Vec<u8>) -> Self {
         Self { key, child }
     }
 

src/nodes/leaf.rs

@@ -69,7 +69,7 @@ impl LeafNode {
     pub const ODD_FLAG: u8 = 0x30;
 
     /// Creates a new leaf node with the given key and value.
-    pub fn new(key: Nibbles, value: Vec<u8>) -> Self {
+    pub const fn new(key: Nibbles, value: Vec<u8>) -> Self {
         Self { key, value }
     }