Make GetSerializeSize a wrapper on top of CSizeComputer

Given that in default GetSerializeSize implementations created by
ADD_SERIALIZE_METHODS we're already using CSizeComputer(), get rid
of the specialized GetSerializeSize methods everywhere, and just use
CSizeComputer. This removes a lot of code which isn't actually used
anywhere.

For CCompactSize and CVarInt this actually removes a more efficient
size computing algorithm, which is brought back in a later commit.

14 files changed, 27 insertions, 210 deletions

diff --git a/src/addrman.h b/src/addrman.h
index e9e137c978..03b380165f 100644
--- a/src/addrman.h
+++ b/src/addrman.h
@@ -448,11 +448,6 @@ public:
         Check();
     }
 
-    unsigned int GetSerializeSize(int nType, int nVersion) const
-    {
-        return (CSizeComputer(nType, nVersion) << *this).size();
-    }
-
     void Clear()
     {
         std::vector<int>().swap(vRandom);
diff --git a/src/blockencodings.cpp b/src/blockencodings.cpp
index 93d3fa372b..bde8463b33 100644
--- a/src/blockencodings.cpp
+++ b/src/blockencodings.cpp
@@ -131,7 +131,7 @@ ReadStatus PartiallyDownloadedBlock::InitData(const CBlockHeaderAndShortTxIDs& c
             break;
     }
 
-    LogPrint("cmpctblock", "Initialized PartiallyDownloadedBlock for block %s using a cmpctblock of size %lu\n", cmpctblock.header.GetHash().ToString(), cmpctblock.GetSerializeSize(SER_NETWORK, PROTOCOL_VERSION));
+    LogPrint("cmpctblock", "Initialized PartiallyDownloadedBlock for block %s using a cmpctblock of size %lu\n", cmpctblock.header.GetHash().ToString(), GetSerializeSize(cmpctblock, SER_NETWORK, PROTOCOL_VERSION));
 
     return READ_STATUS_OK;
 }
diff --git a/src/coins.h b/src/coins.h
index 033651a435..3e134cf675 100644
--- a/src/coins.h
+++ b/src/coins.h
@@ -153,29 +153,6 @@ public:
         return fCoinBase;
     }
 
-    unsigned int GetSerializeSize(int nType, int nVersion) const {
-        unsigned int nSize = 0;
-        unsigned int nMaskSize = 0, nMaskCode = 0;
-        CalcMaskSize(nMaskSize, nMaskCode);
-        bool fFirst = vout.size() > 0 && !vout[0].IsNull();
-        bool fSecond = vout.size() > 1 && !vout[1].IsNull();
-        assert(fFirst || fSecond || nMaskCode);
-        unsigned int nCode = 8*(nMaskCode - (fFirst || fSecond ? 0 : 1)) + (fCoinBase ? 1 : 0) + (fFirst ? 2 : 0) + (fSecond ? 4 : 0);
-        // version
-        nSize += ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion);
-        // size of header code
-        nSize += ::GetSerializeSize(VARINT(nCode), nType, nVersion);
-        // spentness bitmask
-        nSize += nMaskSize;
-        // txouts themself
-        for (unsigned int i = 0; i < vout.size(); i++)
-            if (!vout[i].IsNull())
-                nSize += ::GetSerializeSize(CTxOutCompressor(REF(vout[i])), nType, nVersion);
-        // height
-        nSize += ::GetSerializeSize(VARINT(nHeight), nType, nVersion);
-        return nSize;
-    }
-
     template<typename Stream>
     void Serialize(Stream &s, int nType, int nVersion) const {
         unsigned int nMaskSize = 0, nMaskCode = 0;
diff --git a/src/compressor.h b/src/compressor.h
index fa702f0dfa..90749499d1 100644
--- a/src/compressor.h
+++ b/src/compressor.h
@@ -55,14 +55,6 @@ protected:
 public:
     CScriptCompressor(CScript &scriptIn) : script(scriptIn) { }
 
-    unsigned int GetSerializeSize(int nType, int nVersion) const {
-        std::vector<unsigned char> compr;
-        if (Compress(compr))
-            return compr.size();
-        unsigned int nSize = script.size() + nSpecialScripts;
-        return script.size() + VARINT(nSize).GetSerializeSize(nType, nVersion);
-    }
-
     template<typename Stream>
     void Serialize(Stream &s, int nType, int nVersion) const {
         std::vector<unsigned char> compr;
diff --git a/src/dbwrapper.h b/src/dbwrapper.h
index 47bdb31b5b..7728b49d93 100644
--- a/src/dbwrapper.h
+++ b/src/dbwrapper.h
@@ -60,12 +60,12 @@ public:
     void Write(const K& key, const V& value)
     {
         CDataStream ssKey(SER_DISK, CLIENT_VERSION);
-        ssKey.reserve(ssKey.GetSerializeSize(key));
+        ssKey.reserve(GetSerializeSize(ssKey, key));
         ssKey << key;
         leveldb::Slice slKey(&ssKey[0], ssKey.size());
 
         CDataStream ssValue(SER_DISK, CLIENT_VERSION);
-        ssValue.reserve(ssValue.GetSerializeSize(value));
+        ssValue.reserve(GetSerializeSize(ssValue, value));
         ssValue << value;
         ssValue.Xor(dbwrapper_private::GetObfuscateKey(parent));
         leveldb::Slice slValue(&ssValue[0], ssValue.size());
@@ -77,7 +77,7 @@ public:
     void Erase(const K& key)
     {
         CDataStream ssKey(SER_DISK, CLIENT_VERSION);
-        ssKey.reserve(ssKey.GetSerializeSize(key));
+        ssKey.reserve(GetSerializeSize(ssKey, key));
         ssKey << key;
         leveldb::Slice slKey(&ssKey[0], ssKey.size());
 
@@ -107,7 +107,7 @@ public:
 
     template<typename K> void Seek(const K& key) {
         CDataStream ssKey(SER_DISK, CLIENT_VERSION);
-        ssKey.reserve(ssKey.GetSerializeSize(key));
+        ssKey.reserve(GetSerializeSize(ssKey, key));
         ssKey << key;
         leveldb::Slice slKey(&ssKey[0], ssKey.size());
         piter->Seek(slKey);
@@ -200,7 +200,7 @@ public:
     bool Read(const K& key, V& value) const
     {
         CDataStream ssKey(SER_DISK, CLIENT_VERSION);
-        ssKey.reserve(ssKey.GetSerializeSize(key));
+        ssKey.reserve(GetSerializeSize(ssKey, key));
         ssKey << key;
         leveldb::Slice slKey(&ssKey[0], ssKey.size());
 
@@ -234,7 +234,7 @@ public:
     bool Exists(const K& key) const
     {
         CDataStream ssKey(SER_DISK, CLIENT_VERSION);
-        ssKey.reserve(ssKey.GetSerializeSize(key));
+        ssKey.reserve(GetSerializeSize(ssKey, key));
         ssKey << key;
         leveldb::Slice slKey(&ssKey[0], ssKey.size());
 
diff --git a/src/main.cpp b/src/main.cpp
index e0c614b731..13872c4bf2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1710,7 +1710,7 @@ bool WriteBlockToDisk(const CBlock& block, CDiskBlockPos& pos, const CMessageHea
         return error("WriteBlockToDisk: OpenBlockFile failed");
 
     // Write index header
-    unsigned int nSize = fileout.GetSerializeSize(block);
+    unsigned int nSize = GetSerializeSize(fileout, block);
     fileout << FLATDATA(messageStart) << nSize;
 
     // Write block
@@ -2100,7 +2100,7 @@ bool UndoWriteToDisk(const CBlockUndo& blockundo, CDiskBlockPos& pos, const uint
         return error("%s: OpenUndoFile failed", __func__);
 
     // Write index header
-    unsigned int nSize = fileout.GetSerializeSize(blockundo);
+    unsigned int nSize = GetSerializeSize(fileout, blockundo);
     fileout << FLATDATA(messageStart) << nSize;
 
     // Write undo data
diff --git a/src/primitives/transaction.h b/src/primitives/transaction.h
index 1afeb87039..714ab34548 100644
--- a/src/primitives/transaction.h
+++ b/src/primitives/transaction.h
@@ -177,7 +177,7 @@ public:
         if (scriptPubKey.IsUnspendable())
             return 0;
 
-        size_t nSize = GetSerializeSize(SER_DISK, 0);
+        size_t nSize = GetSerializeSize(*this, SER_DISK, 0);
         int witnessversion = 0;
         std::vector<unsigned char> witnessprogram;
 
diff --git a/src/pubkey.h b/src/pubkey.h
index 3a554877f8..3277218bb6 100644
--- a/src/pubkey.h
+++ b/src/pubkey.h
@@ -116,10 +116,6 @@ public:
     }
 
     //! Implement serialization, as if this was a byte vector.
-    unsigned int GetSerializeSize(int nType, int nVersion) const
-    {
-        return size() + 1;
-    }
     template <typename Stream>
     void Serialize(Stream& s, int nType, int nVersion) const
     {
@@ -214,10 +210,6 @@ struct CExtPubKey {
     void Decode(const unsigned char code[BIP32_EXTKEY_SIZE]);
     bool Derive(CExtPubKey& out, unsigned int nChild) const;
 
-    unsigned int GetSerializeSize(int nType, int nVersion) const
-    {
-        return BIP32_EXTKEY_SIZE+1; //add one byte for the size (compact int)
-    }
     template <typename Stream>
     void Serialize(Stream& s, int nType, int nVersion) const
     {
diff --git a/src/script/bitcoinconsensus.cpp b/src/script/bitcoinconsensus.cpp
index 4e2358d9a2..ec573c3183 100644
--- a/src/script/bitcoinconsensus.cpp
+++ b/src/script/bitcoinconsensus.cpp
@@ -87,7 +87,7 @@ static int verify_script(const unsigned char *scriptPubKey, unsigned int scriptP
         stream >> tx;
         if (nIn >= tx.vin.size())
             return set_error(err, bitcoinconsensus_ERR_TX_INDEX);
-        if (tx.GetSerializeSize(SER_NETWORK, PROTOCOL_VERSION) != txToLen)
+        if (GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION) != txToLen)
             return set_error(err, bitcoinconsensus_ERR_TX_SIZE_MISMATCH);
 
         // Regardless of the verification result, the tx did not error.
diff --git a/src/serialize.h b/src/serialize.h
index 68a8e28477..80289a365a 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -169,11 +169,6 @@ enum
  * added as members. 
  */
 #define ADD_SERIALIZE_METHODS                                                          \
-    size_t GetSerializeSize(int nType, int nVersion) const {                         \
-        CSizeComputer s(nType, nVersion);                                            \
-        NCONST_PTR(this)->SerializationOp(s, CSerActionSerialize(), nType, nVersion);\
-        return s.size();                                                             \
-    }                                                                                \
     template<typename Stream>                                                        \
     void Serialize(Stream& s, int nType, int nVersion) const {                       \
         NCONST_PTR(this)->SerializationOp(s, CSerActionSerialize(), nType, nVersion);\
@@ -186,18 +181,6 @@ enum
 /*
  * Basic Types
  */
-inline unsigned int GetSerializeSize(char a,      int, int=0) { return 1; }
-inline unsigned int GetSerializeSize(int8_t a,    int, int=0) { return 1; }
-inline unsigned int GetSerializeSize(uint8_t a,   int, int=0) { return 1; }
-inline unsigned int GetSerializeSize(int16_t a,   int, int=0) { return 2; }
-inline unsigned int GetSerializeSize(uint16_t a,  int, int=0) { return 2; }
-inline unsigned int GetSerializeSize(int32_t a,   int, int=0) { return 4; }
-inline unsigned int GetSerializeSize(uint32_t a,  int, int=0) { return 4; }
-inline unsigned int GetSerializeSize(int64_t a,   int, int=0) { return 8; }
-inline unsigned int GetSerializeSize(uint64_t a,  int, int=0) { return 8; }
-inline unsigned int GetSerializeSize(float a,     int, int=0) { return 4; }
-inline unsigned int GetSerializeSize(double a,    int, int=0) { return 8; }
-
 template<typename Stream> inline void Serialize(Stream& s, char a,         int, int=0) { ser_writedata8(s, a); } // TODO Get rid of bare char
 template<typename Stream> inline void Serialize(Stream& s, int8_t a,       int, int=0) { ser_writedata8(s, a); }
 template<typename Stream> inline void Serialize(Stream& s, uint8_t a,      int, int=0) { ser_writedata8(s, a); }
@@ -222,7 +205,6 @@ template<typename Stream> inline void Unserialize(Stream& s, uint64_t& a,  int,
 template<typename Stream> inline void Unserialize(Stream& s, float& a,     int, int=0) { a = ser_uint32_to_float(ser_readdata32(s)); }
 template<typename Stream> inline void Unserialize(Stream& s, double& a,    int, int=0) { a = ser_uint64_to_double(ser_readdata64(s)); }
 
-inline unsigned int GetSerializeSize(bool a, int, int=0)                          { return sizeof(char); }
 template<typename Stream> inline void Serialize(Stream& s, bool a, int, int=0)    { char f=a; ser_writedata8(s, f); }
 template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0) { char f=ser_readdata8(s); a=f; }
 
@@ -403,11 +385,6 @@ public:
     char* end() { return pend; }
     const char* end() const { return pend; }
 
-    unsigned int GetSerializeSize(int, int=0) const
-    {
-        return pend - pbegin;
-    }
-
     template<typename Stream>
     void Serialize(Stream& s, int, int=0) const
     {
@@ -429,10 +406,6 @@ protected:
 public:
     CVarInt(I& nIn) : n(nIn) { }
 
-    unsigned int GetSerializeSize(int, int) const {
-        return GetSizeOfVarInt<I>(n);
-    }
-
     template<typename Stream>
     void Serialize(Stream &s, int, int) const {
         WriteVarInt<Stream,I>(s, n);
@@ -451,10 +424,6 @@ protected:
 public:
     CCompactSize(uint64_t& nIn) : n(nIn) { }
 
-    unsigned int GetSerializeSize(int, int) const {
-        return GetSizeOfCompactSize(n);
-    }
-
     template<typename Stream>
     void Serialize(Stream &s, int, int) const {
         WriteCompactSize<Stream>(s, n);
@@ -493,11 +462,6 @@ public:
         if (!string.empty())
             s.write((char*)&string[0], string.size());
     }
-
-    unsigned int GetSerializeSize(int, int=0) const
-    {
-        return GetSizeOfCompactSize(string.size()) + string.size();
-    }
 };
 
 template<typename I>
@@ -510,7 +474,6 @@ CVarInt<I> WrapVarInt(I& n) { return CVarInt<I>(n); }
 /**
  *  string
  */
-template<typename C> unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int=0);
 template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str, int, int=0);
 template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);
 
@@ -518,9 +481,6 @@ template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_st
  * prevector
  * prevectors of unsigned char are a special case and are intended to be serialized as a single opaque blob.
  */
-template<unsigned int N, typename T> unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const unsigned char&);
-template<unsigned int N, typename T, typename V> unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const V&);
-template<unsigned int N, typename T> inline unsigned int GetSerializeSize(const prevector<N, T>& v, int nType, int nVersion);
 template<typename Stream, unsigned int N, typename T> void Serialize_impl(Stream& os, const prevector<N, T>& v, int nType, int nVersion, const unsigned char&);
 template<typename Stream, unsigned int N, typename T, typename V> void Serialize_impl(Stream& os, const prevector<N, T>& v, int nType, int nVersion, const V&);
 template<typename Stream, unsigned int N, typename T> inline void Serialize(Stream& os, const prevector<N, T>& v, int nType, int nVersion);
@@ -532,9 +492,6 @@ template<typename Stream, unsigned int N, typename T> inline void Unserialize(St
  * vector
  * vectors of unsigned char are a special case and are intended to be serialized as a single opaque blob.
  */
-template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const unsigned char&);
-template<typename T, typename A, typename V> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const V&);
-template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion);
 template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const unsigned char&);
 template<typename Stream, typename T, typename A, typename V> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const V&);
 template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion);
@@ -545,21 +502,18 @@ template<typename Stream, typename T, typename A> inline void Unserialize(Stream
 /**
  * pair
  */
-template<typename K, typename T> unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion);
 template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion);
 template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion);
 
 /**
  * map
  */
-template<typename K, typename T, typename Pred, typename A> unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion);
 template<typename Stream, typename K, typename T, typename Pred, typename A> void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion);
 template<typename Stream, typename K, typename T, typename Pred, typename A> void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion);
 
 /**
  * set
  */
-template<typename K, typename Pred, typename A> unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion);
 template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion);
 template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion);
 
@@ -573,12 +527,6 @@ template<typename Stream, typename K, typename Pred, typename A> void Unserializ
  * The compiler will only cast int to long if none of the other templates matched.
  * Thanks to Boost serialization for this idea.
  */
-template<typename T>
-inline unsigned int GetSerializeSize(const T& a, long nType, int nVersion)
-{
-    return a.GetSerializeSize((int)nType, nVersion);
-}
-
 template<typename Stream, typename T>
 inline void Serialize(Stream& os, const T& a, long nType, int nVersion)
 {
@@ -598,12 +546,6 @@ inline void Unserialize(Stream& is, T& a, long nType, int nVersion)
 /**
  * string
  */
-template<typename C>
-unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int)
-{
-    return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]);
-}
-
 template<typename Stream, typename C>
 void Serialize(Stream& os, const std::basic_string<C>& str, int, int)
 {
@@ -626,28 +568,6 @@ void Unserialize(Stream& is, std::basic_string<C>& str, int, int)
 /**
  * prevector
  */
-template<unsigned int N, typename T>
-unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const unsigned char&)
-{
-    return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
-}
-
-template<unsigned int N, typename T, typename V>
-unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const V&)
-{
-    unsigned int nSize = GetSizeOfCompactSize(v.size());
-    for (typename prevector<N, T>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
-        nSize += GetSerializeSize((*vi), nType, nVersion);
-    return nSize;
-}
-
-template<unsigned int N, typename T>
-inline unsigned int GetSerializeSize(const prevector<N, T>& v, int nType, int nVersion)
-{
-    return GetSerializeSize_impl(v, nType, nVersion, T());
-}
-
-
 template<typename Stream, unsigned int N, typename T>
 void Serialize_impl(Stream& os, const prevector<N, T>& v, int nType, int nVersion, const unsigned char&)
 {
@@ -716,28 +636,6 @@ inline void Unserialize(Stream& is, prevector<N, T>& v, int nType, int nVersion)
 /**
  * vector
  */
-template<typename T, typename A>
-unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const unsigned char&)
-{
-    return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
-}
-
-template<typename T, typename A, typename V>
-unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const V&)
-{
-    unsigned int nSize = GetSizeOfCompactSize(v.size());
-    for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
-        nSize += GetSerializeSize((*vi), nType, nVersion);
-    return nSize;
-}
-
-template<typename T, typename A>
-inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
-{
-    return GetSerializeSize_impl(v, nType, nVersion, T());
-}
-
-
 template<typename Stream, typename T, typename A>
 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const unsigned char&)
 {
@@ -806,12 +704,6 @@ inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersio
 /**
  * pair
  */
-template<typename K, typename T>
-unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion)
-{
-    return GetSerializeSize(item.first, nType, nVersion) + GetSerializeSize(item.second, nType, nVersion);
-}
-
 template<typename Stream, typename K, typename T>
 void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion)
 {
@@ -831,15 +723,6 @@ void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion)
 /**
  * map
  */
-template<typename K, typename T, typename Pred, typename A>
-unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion)
-{
-    unsigned int nSize = GetSizeOfCompactSize(m.size());
-    for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
-        nSize += GetSerializeSize((*mi), nType, nVersion);
-    return nSize;
-}
-
 template<typename Stream, typename K, typename T, typename Pred, typename A>
 void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion)
 {
@@ -867,15 +750,6 @@ void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion
 /**
  * set
  */
-template<typename K, typename Pred, typename A>
-unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion)
-{
-    unsigned int nSize = GetSizeOfCompactSize(m.size());
-    for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
-        nSize += GetSerializeSize((*it), nType, nVersion);
-    return nSize;
-}
-
 template<typename Stream, typename K, typename Pred, typename A>
 void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion)
 {
@@ -1008,4 +882,16 @@ inline void SerReadWriteMany(Stream& s, int nType, int nVersion, CSerActionUnser
     ::UnserializeMany(s, nType, nVersion, args...);
 }
 
+template <typename T>
+size_t GetSerializeSize(const T& t, int nType, int nVersion = 0)
+{
+    return (CSizeComputer(nType, nVersion) << t).size();
+}
+
+template <typename S, typename T>
+size_t GetSerializeSize(const S& s, const T& t)
+{
+    return (CSizeComputer(s.GetType(), s.GetVersion()) << t).size();
+}
+
 #endif // BITCOIN_SERIALIZE_H
diff --git a/src/streams.h b/src/streams.h
index 12a36a4a70..d9965b534d 100644
--- a/src/streams.h
+++ b/src/streams.h
@@ -309,13 +309,6 @@ public:
     }
 
     template<typename T>
-    unsigned int GetSerializeSize(const T& obj)
-    {
-        // Tells the size of the object if serialized to this stream
-        return ::GetSerializeSize(obj, nType, nVersion);
-    }
-
-    template<typename T>
     CDataStream& operator<<(const T& obj)
     {
         // Serialize to this stream
@@ -458,13 +451,6 @@ public:
     }
 
     template<typename T>
-    unsigned int GetSerializeSize(const T& obj)
-    {
-        // Tells the size of the object if serialized to this stream
-        return ::GetSerializeSize(obj, nType, nVersion);
-    }
-
-    template<typename T>
     CAutoFile& operator<<(const T& obj)
     {
         // Serialize to this stream
diff --git a/src/test/uint256_tests.cpp b/src/test/uint256_tests.cpp
index da0a3d73e0..ba8eb16ba9 100644
--- a/src/test/uint256_tests.cpp
+++ b/src/test/uint256_tests.cpp
@@ -184,8 +184,8 @@ BOOST_AUTO_TEST_CASE( methods ) // GetHex SetHex begin() end() size() GetLow64 G
     BOOST_CHECK(OneL.begin() + 32 == OneL.end());
     BOOST_CHECK(MaxL.begin() + 32 == MaxL.end());
     BOOST_CHECK(TmpL.begin() + 32 == TmpL.end());
-    BOOST_CHECK(R1L.GetSerializeSize(0,PROTOCOL_VERSION) == 32);
-    BOOST_CHECK(ZeroL.GetSerializeSize(0,PROTOCOL_VERSION) == 32);
+    BOOST_CHECK(GetSerializeSize(R1L, 0, PROTOCOL_VERSION) == 32);
+    BOOST_CHECK(GetSerializeSize(ZeroL, 0, PROTOCOL_VERSION) == 32);
 
     std::stringstream ss;
     R1L.Serialize(ss,0,PROTOCOL_VERSION);
@@ -230,8 +230,8 @@ BOOST_AUTO_TEST_CASE( methods ) // GetHex SetHex begin() end() size() GetLow64 G
     BOOST_CHECK(OneS.begin() + 20 == OneS.end());
     BOOST_CHECK(MaxS.begin() + 20 == MaxS.end());
     BOOST_CHECK(TmpS.begin() + 20 == TmpS.end());
-    BOOST_CHECK(R1S.GetSerializeSize(0,PROTOCOL_VERSION) == 20);
-    BOOST_CHECK(ZeroS.GetSerializeSize(0,PROTOCOL_VERSION) == 20);
+    BOOST_CHECK(GetSerializeSize(R1S, 0, PROTOCOL_VERSION) == 20);
+    BOOST_CHECK(GetSerializeSize(ZeroS, 0, PROTOCOL_VERSION) == 20);
 
     R1S.Serialize(ss,0,PROTOCOL_VERSION);
     BOOST_CHECK(ss.str() == std::string(R1Array,R1Array+20));
diff --git a/src/uint256.h b/src/uint256.h
index dd8432d74c..94fe66d26c 100644
--- a/src/uint256.h
+++ b/src/uint256.h
@@ -78,11 +78,6 @@ public:
         return sizeof(data);
     }
 
-    unsigned int GetSerializeSize(int nType, int nVersion) const
-    {
-        return sizeof(data);
-    }
-
     uint64_t GetUint64(int pos) const
     {
         const uint8_t* ptr = data + pos * 8;
diff --git a/src/undo.h b/src/undo.h
index d4fc84c90c..9d6f9bd0d0 100644
--- a/src/undo.h
+++ b/src/undo.h
@@ -27,12 +27,6 @@ public:
     CTxInUndo() : txout(), fCoinBase(false), nHeight(0), nVersion(0) {}
     CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, unsigned int nHeightIn = 0, int nVersionIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), nHeight(nHeightIn), nVersion(nVersionIn) { }
 
-    unsigned int GetSerializeSize(int nType, int nVersion) const {
-        return ::GetSerializeSize(VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion) +
-               (nHeight > 0 ? ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion) : 0) +
-               ::GetSerializeSize(CTxOutCompressor(REF(txout)), nType, nVersion);
-    }
-
     template<typename Stream>
     void Serialize(Stream &s, int nType, int nVersion) const {
         ::Serialize(s, VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion);