Merge rust-bitcoin/rust-bitcoin#1051: Add getter methods for PartialMerkleTree fields

9ff0e06810 Add getter methods for PartialMerkleTree fields (eunoia_1729)

Pull request description:

  Resolves: #1046

ACKs for top commit:
  apoelstra:
    ACK 9ff0e06810
  tcharding:
    ACK 9ff0e06810

Tree-SHA512: 849f2bf87ab99a8f975ee9c78eaaf3b8d392c3338317d94234ceb9da0d78bddd488c67dfb3ded1c572d5ce400c10263d75815315a4cd52b80cd6b60e12d55078

src/util/merkleblock.rs

@@ -122,6 +122,21 @@ pub struct PartialMerkleTree {
 }
 
 impl PartialMerkleTree {
+    /// Returns the total number of transactions in the block.
+    pub fn num_transactions(&self) -> u32 {
+        self.num_transactions
+    }
+
+    /// Returns the node-is-parent-of-matched-txid bits of the partial merkle tree.
+    pub fn bits(&self) -> &Vec<bool> {
+        &self.bits
+    }
+
+    /// Returns the transaction ids and internal hashes of the partial merkle tree.
+    pub fn hashes(&self) -> &Vec<TxMerkleNode> {
+        &self.hashes
+    }
+
     /// Construct a partial merkle tree
     /// The `txids` are the transaction hashes of the block and the `matches` is the contains flags
     /// wherever a tx hash should be included in the proof.