From 9c347313f7f504d602a9d744f1ad7aee4e3d6f9a Mon Sep 17 00:00:00 2001
From: Tom Harding <tomh@thinlink.com>
Date: Mon, 21 Jul 2014 11:50:07 -0700
Subject: [PATCH] CBloomFilter::clear() method

---
 src/bloom.cpp            | 7 +++++++
 src/bloom.h              | 2 ++
 src/test/bloom_tests.cpp | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/src/bloom.cpp b/src/bloom.cpp
index 26e366179..85a2ddc18 100644
--- a/src/bloom.cpp
+++ b/src/bloom.cpp
@@ -94,6 +94,13 @@ bool CBloomFilter::contains(const uint256& hash) const
     return contains(data);
 }
 
+void CBloomFilter::clear()
+{
+    vData.assign(vData.size(),0);
+    isFull = false;
+    isEmpty = true;
+}
+
 bool CBloomFilter::IsWithinSizeConstraints() const
 {
     return vData.size() <= MAX_BLOOM_FILTER_SIZE && nHashFuncs <= MAX_HASH_FUNCS;
diff --git a/src/bloom.h b/src/bloom.h
index 956bead87..d0caf9e9f 100644
--- a/src/bloom.h
+++ b/src/bloom.h
@@ -78,6 +78,8 @@ public:
     bool contains(const COutPoint& outpoint) const;
     bool contains(const uint256& hash) const;
 
+    void clear();
+
     // True if the size is <= MAX_BLOOM_FILTER_SIZE and the number of hash functions is <= MAX_HASH_FUNCS
     // (catch a filter which was just deserialized which was too big)
     bool IsWithinSizeConstraints() const;
diff --git a/src/test/bloom_tests.cpp b/src/test/bloom_tests.cpp
index 69de3b5bb..2cdafa4bd 100644
--- a/src/test/bloom_tests.cpp
+++ b/src/test/bloom_tests.cpp
@@ -45,6 +45,10 @@ BOOST_AUTO_TEST_CASE(bloom_create_insert_serialize)
         expected[i] = (char)vch[i];
 
     BOOST_CHECK_EQUAL_COLLECTIONS(stream.begin(), stream.end(), expected.begin(), expected.end());
+
+    BOOST_CHECK_MESSAGE( filter.contains(ParseHex("99108ad8ed9bb6274d3980bab5a85c048f0950c8")), "BloomFilter doesn't contain just-inserted object!");
+    filter.clear();
+    BOOST_CHECK_MESSAGE( !filter.contains(ParseHex("99108ad8ed9bb6274d3980bab5a85c048f0950c8")), "BloomFilter should be empty!");
 }
 
 BOOST_AUTO_TEST_CASE(bloom_create_insert_serialize_with_tweak)