Add uint256 support to CRollingBloomFilter

(cherry picked from commit bbe41088c61f2ad328766e851ffe6169aa80935a)

src/bloom.cpp

@@ -234,6 +234,20 @@ void CRollingBloomFilter::insert(const std::vector<unsigned char>& vKey)
     }
 }
 
+void CRollingBloomFilter::insert(const uint256& hash)
+{
+    if (nInsertions == 0) {
+        b1.clear();
+    } else if (nInsertions == nBloomSize / 2) {
+        b2.clear();
+    }
+    b1.insert(hash);
+    b2.insert(hash);
+    if (++nInsertions == nBloomSize) {
+        nInsertions = 0;
+    }
+}
+
 bool CRollingBloomFilter::contains(const std::vector<unsigned char>& vKey) const
 {
     if (nInsertions < nBloomSize / 2) {
@@ -242,6 +256,14 @@ bool CRollingBloomFilter::contains(const std::vector<unsigned char>& vKey) const
     return b1.contains(vKey);
 }
 
+bool CRollingBloomFilter::contains(const uint256& hash) const
+{
+    if (nInsertions < nBloomSize / 2) {
+        return b2.contains(hash);
+    }
+    return b1.contains(hash);
+}
+
 void CRollingBloomFilter::clear()
 {
     b1.clear();

src/bloom.h

@@ -114,7 +114,9 @@ public:
     CRollingBloomFilter(unsigned int nElements, double nFPRate, unsigned int nTweak);
 
     void insert(const std::vector<unsigned char>& vKey);
+    void insert(const uint256& hash);
     bool contains(const std::vector<unsigned char>& vKey) const;
+    bool contains(const uint256& hash) const;
 
     void clear();