BREAKCHANGE: support multi leaves merkle proof

src/error.rs

@@ -5,6 +5,10 @@ pub enum Error {
     GetRootOnEmpty,
     InconsistentStore,
     StoreError(crate::string::String),
+    /// proof items is not enough to build a tree
+    CorruptedProof,
+    /// The leaves is an empty list, or beyond the mmr range
+    GenProofForInvalidLeaves,
 }
 
 impl core::fmt::Display for Error {
@@ -14,6 +18,8 @@ impl core::fmt::Display for Error {
             GetRootOnEmpty => write!(f, "Get root on an empty MMR")?,
             InconsistentStore => write!(f, "Inconsistent store")?,
             StoreError(msg) => write!(f, "Store error {}", msg)?,
+            CorruptedProof => write!(f, "Corrupted proof")?,
+            GenProofForInvalidLeaves => write!(f, "Generate proof ofr invalid leaves")?,
         }
         Ok(())
     }