overhaul serialization code

The implementation of each class' serialization/deserialization is no longer
passed within a macro. The implementation now lies within a template of form:

template <typename T, typename Stream, typename Operation>
inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
    size_t nSerSize = 0;
    /* CODE */
    return nSerSize;
}

In cases when codepath should depend on whether or not we are just deserializing
(old fGetSize, fWrite, fRead flags) an additional clause can be used:
bool fRead = boost::is_same<Operation, CSerActionUnserialize>();

The IMPLEMENT_SERIALIZE macro will now be a freestanding clause added within
class' body (similiar to Qt's Q_OBJECT) to implement GetSerializeSize,
Serialize and Unserialize. These are now wrappers around
the "SerializationOp" template.

13 files changed, 463 insertions, 274 deletions

diff --git a/src/addrman.h b/src/addrman.h
index 052d364655..4287cbc1b3 100644
--- a/src/addrman.h
+++ b/src/addrman.h
@@ -46,13 +46,18 @@ private:
 
 public:
 
-    IMPLEMENT_SERIALIZE(
-        CAddress* pthis = (CAddress*)(this);
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        CAddress* pthis = (CAddress*)(thisPtr);
         READWRITE(*pthis);
-        READWRITE(source);
-        READWRITE(nLastSuccess);
-        READWRITE(nAttempts);
-    )
+        READWRITE(thisPtr->source);
+        READWRITE(thisPtr->nLastSuccess);
+        READWRITE(thisPtr->nAttempts);
+        return nSerSize;
+    }
 
     void Init()
     {
diff --git a/src/alert.h b/src/alert.h
index b9d850b565..4c8267fd06 100644
--- a/src/alert.h
+++ b/src/alert.h
@@ -47,23 +47,27 @@ public:
     std::string strReserved;
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(this->nVersion);
-        nVersion = this->nVersion;
-        READWRITE(nRelayUntil);
-        READWRITE(nExpiration);
-        READWRITE(nID);
-        READWRITE(nCancel);
-        READWRITE(setCancel);
-        READWRITE(nMinVer);
-        READWRITE(nMaxVer);
-        READWRITE(setSubVer);
-        READWRITE(nPriority);
-
-        READWRITE(LIMITED_STRING(strComment, 65536));
-        READWRITE(LIMITED_STRING(strStatusBar, 256));
-        READWRITE(LIMITED_STRING(strReserved, 256));
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->nVersion);
+        nVersion = thisPtr->nVersion;
+        READWRITE(thisPtr->nRelayUntil);
+        READWRITE(thisPtr->nExpiration);
+        READWRITE(thisPtr->nID);
+        READWRITE(thisPtr->nCancel);
+        READWRITE(thisPtr->setCancel);
+        READWRITE(thisPtr->nMinVer);
+        READWRITE(thisPtr->nMaxVer);
+        READWRITE(thisPtr->setSubVer);
+        READWRITE(thisPtr->nPriority);
+
+        READWRITE(LIMITED_STRING(thisPtr->strComment, 65536));
+        READWRITE(LIMITED_STRING(thisPtr->strStatusBar, 256));
+        READWRITE(LIMITED_STRING(thisPtr->strReserved, 256));
+        return nSerSize;
+    }
 
     void SetNull();
 
@@ -83,10 +87,14 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(vchMsg);
-        READWRITE(vchSig);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->vchMsg);
+        READWRITE(thisPtr->vchSig);
+        return nSerSize;
+    }
 
     void SetNull();
     bool IsNull() const;
diff --git a/src/bloom.h b/src/bloom.h
index 54d16d7126..dafea67029 100644
--- a/src/bloom.h
+++ b/src/bloom.h
@@ -63,12 +63,16 @@ public:
     CBloomFilter() : isFull(true), isEmpty(false), nHashFuncs(0), nTweak(0), nFlags(0) {}
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(vData);
-        READWRITE(nHashFuncs);
-        READWRITE(nTweak);
-        READWRITE(nFlags);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->vData);
+        READWRITE(thisPtr->nHashFuncs);
+        READWRITE(thisPtr->nTweak);
+        READWRITE(thisPtr->nFlags);
+        return nSerSize;
+    }
 
     void insert(const std::vector<unsigned char>& vKey);
     void insert(const COutPoint& outpoint);
diff --git a/src/core.h b/src/core.h
index 126e1baa98..1caf9da6c0 100644
--- a/src/core.h
+++ b/src/core.h
@@ -30,7 +30,16 @@ public:
 
     COutPoint() { SetNull(); }
     COutPoint(uint256 hashIn, uint32_t nIn) { hash = hashIn; n = nIn; }
-    IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
+
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(FLATDATA(*thisPtr));
+        return nSerSize;
+    }
+
     void SetNull() { hash = 0; n = (uint32_t) -1; }
     bool IsNull() const { return (hash == 0 && n == (uint32_t) -1); }
 
@@ -85,11 +94,15 @@ public:
     CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn=CScript(), uint32_t nSequenceIn=std::numeric_limits<uint32_t>::max());
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(prevout);
-        READWRITE(scriptSig);
-        READWRITE(nSequence);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->prevout);
+        READWRITE(thisPtr->scriptSig);
+        READWRITE(thisPtr->nSequence);
+        return nSerSize;
+    }
 
     bool IsFinal() const
     {
@@ -136,7 +149,14 @@ public:
     friend bool operator>=(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK >= b.nSatoshisPerK; }
     std::string ToString() const;
 
-    IMPLEMENT_SERIALIZE( READWRITE(nSatoshisPerK); )
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->nSatoshisPerK);
+        return nSerSize;
+    }
 };
 
 
@@ -157,10 +177,14 @@ public:
     CTxOut(int64_t nValueIn, CScript scriptPubKeyIn);
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(nValue);
-        READWRITE(scriptPubKey);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->nValue);
+        READWRITE(thisPtr->scriptPubKey);
+        return nSerSize;
+    }
 
     void SetNull()
     {
@@ -237,15 +261,23 @@ public:
 
     CTransaction& operator=(const CTransaction& tx);
 
-    IMPLEMENT_SERIALIZE(
-        READWRITE(*const_cast<int32_t*>(&this->nVersion));
-        nVersion = this->nVersion;
-        READWRITE(*const_cast<std::vector<CTxIn>*>(&vin));
-        READWRITE(*const_cast<std::vector<CTxOut>*>(&vout));
-        READWRITE(*const_cast<uint32_t*>(&nLockTime));
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+
+        READWRITE(*const_cast<int32_t*>(&thisPtr->nVersion));
+        nVersion = thisPtr->nVersion;
+        READWRITE(*const_cast<std::vector<CTxIn>*>(&thisPtr->vin));
+        READWRITE(*const_cast<std::vector<CTxOut>*>(&thisPtr->vout));
+        READWRITE(*const_cast<uint32_t*>(&thisPtr->nLockTime));
         if (fRead)
-            UpdateHash();
-    )
+            thisPtr->UpdateHash();
+
+        return nSerSize;
+    }
 
     bool IsNull() const {
         return vin.empty() && vout.empty();
@@ -292,13 +324,20 @@ struct CMutableTransaction
     CMutableTransaction();
     CMutableTransaction(const CTransaction& tx);
 
-    IMPLEMENT_SERIALIZE(
-        READWRITE(this->nVersion);
-        nVersion = this->nVersion;
-        READWRITE(vin);
-        READWRITE(vout);
-        READWRITE(nLockTime);
-    )
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+
+        READWRITE(thisPtr->nVersion);
+        nVersion = thisPtr->nVersion;
+        READWRITE(thisPtr->vin);
+        READWRITE(thisPtr->vout);
+        READWRITE(thisPtr->nLockTime);
+
+        return nSerSize;
+    }
 
     /** Compute the hash of this CMutableTransaction. This is computed on the
      * fly, as opposed to GetHash() in CTransaction, which uses a cached result.
@@ -318,18 +357,24 @@ public:
 
     CTxOutCompressor(CTxOut &txoutIn) : txout(txoutIn) { }
 
-    IMPLEMENT_SERIALIZE(({
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+        size_t nSerSize = 0;
         if (!fRead) {
-            uint64_t nVal = CompressAmount(txout.nValue);
+            uint64_t nVal = CompressAmount(thisPtr->txout.nValue);
             READWRITE(VARINT(nVal));
         } else {
             uint64_t nVal = 0;
             READWRITE(VARINT(nVal));
-            txout.nValue = DecompressAmount(nVal);
+            thisPtr->txout.nValue = DecompressAmount(nVal);
         }
-        CScriptCompressor cscript(REF(txout.scriptPubKey));
+        CScriptCompressor cscript(REF(thisPtr->txout.scriptPubKey));
         READWRITE(cscript);
-    });)
+        return nSerSize;
+    }
 };
 
 /** Undo information for a CTxIn
@@ -382,9 +427,14 @@ public:
     // undo information for all txins
     std::vector<CTxInUndo> vprevout;
 
-    IMPLEMENT_SERIALIZE(
-        READWRITE(vprevout);
-    )
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->vprevout);
+        return nSerSize;
+    }
 };
 
 
@@ -413,15 +463,21 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(this->nVersion);
-        nVersion = this->nVersion;
-        READWRITE(hashPrevBlock);
-        READWRITE(hashMerkleRoot);
-        READWRITE(nTime);
-        READWRITE(nBits);
-        READWRITE(nNonce);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+
+        READWRITE(thisPtr->nVersion);
+        nVersion = thisPtr->nVersion;
+        READWRITE(thisPtr->hashPrevBlock);
+        READWRITE(thisPtr->hashMerkleRoot);
+        READWRITE(thisPtr->nTime);
+        READWRITE(thisPtr->nBits);
+        READWRITE(thisPtr->nNonce);
+
+        return nSerSize;
+    }
 
     void SetNull()
     {
@@ -468,10 +524,16 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(*(CBlockHeader*)this);
-        READWRITE(vtx);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+
+        READWRITE(*(CBlockHeader*)thisPtr);
+        READWRITE(thisPtr->vtx);
+
+        return nSerSize;
+    }
 
     void SetNull()
     {
@@ -516,11 +578,17 @@ struct CBlockLocator
     }
 
     IMPLEMENT_SERIALIZE
-    (
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+
         if (!(nType & SER_GETHASH))
             READWRITE(nVersion);
-        READWRITE(vHave);
-    )
+        READWRITE(thisPtr->vHave);
+
+        return nSerSize;
+    }
 
     void SetNull()
     {
diff --git a/src/crypter.h b/src/crypter.h
index f16fcef9c7..c3f4ed971c 100644
--- a/src/crypter.h
+++ b/src/crypter.h
@@ -44,13 +44,18 @@ public:
     std::vector<unsigned char> vchOtherDerivationParameters;
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(vchCryptedKey);
-        READWRITE(vchSalt);
-        READWRITE(nDerivationMethod);
-        READWRITE(nDeriveIterations);
-        READWRITE(vchOtherDerivationParameters);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->vchCryptedKey);
+        READWRITE(thisPtr->vchSalt);
+        READWRITE(thisPtr->nDerivationMethod);
+        READWRITE(thisPtr->nDeriveIterations);
+        READWRITE(thisPtr->vchOtherDerivationParameters);
+        return nSerSize;
+    }
+
     CMasterKey()
     {
         // 25000 rounds is just under 0.1 seconds on a 1.86 GHz Pentium M
diff --git a/src/main.h b/src/main.h
index 9fe15d3aa3..88e3159e3f 100644
--- a/src/main.h
+++ b/src/main.h
@@ -197,10 +197,15 @@ struct CDiskBlockPos
     int nFile;
     unsigned int nPos;
 
-    IMPLEMENT_SERIALIZE(
-        READWRITE(VARINT(nFile));
-        READWRITE(VARINT(nPos));
-    )
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(VARINT(thisPtr->nFile));
+        READWRITE(VARINT(thisPtr->nPos));
+        return nSerSize;
+    }
 
     CDiskBlockPos() {
         SetNull();
@@ -227,10 +232,15 @@ struct CDiskTxPos : public CDiskBlockPos
 {
     unsigned int nTxOffset; // after header
 
-    IMPLEMENT_SERIALIZE(
-        READWRITE(*(CDiskBlockPos*)this);
-        READWRITE(VARINT(nTxOffset));
-    )
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(*(CDiskBlockPos*)thisPtr);
+        READWRITE(VARINT(thisPtr->nTxOffset));
+        return nSerSize;
+    }
 
     CDiskTxPos(const CDiskBlockPos &blockIn, unsigned int nTxOffsetIn) : CDiskBlockPos(blockIn.nFile, blockIn.nPos), nTxOffset(nTxOffsetIn) {
     }
@@ -307,9 +317,14 @@ class CBlockUndo
 public:
     std::vector<CTxUndo> vtxundo; // for all but the coinbase
 
-    IMPLEMENT_SERIALIZE(
-        READWRITE(vtxundo);
-    )
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->vtxundo);
+        return nSerSize;
+    }
 
     bool WriteToDisk(CDiskBlockPos &pos, const uint256 &hashBlock);
     bool ReadFromDisk(const CDiskBlockPos &pos, const uint256 &hashBlock);
@@ -411,24 +426,32 @@ protected:
 public:
 
     // serialization implementation
-    IMPLEMENT_SERIALIZE(
-        READWRITE(nTransactions);
-        READWRITE(vHash);
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+
+        READWRITE(thisPtr->nTransactions);
+        READWRITE(thisPtr->vHash);
         std::vector<unsigned char> vBytes;
         if (fRead) {
             READWRITE(vBytes);
-            CPartialMerkleTree &us = *(const_cast<CPartialMerkleTree*>(this));
+            CPartialMerkleTree &us = *(const_cast<CPartialMerkleTree*>(thisPtr));
             us.vBits.resize(vBytes.size() * 8);
             for (unsigned int p = 0; p < us.vBits.size(); p++)
                 us.vBits[p] = (vBytes[p / 8] & (1 << (p % 8))) != 0;
             us.fBad = false;
         } else {
-            vBytes.resize((vBits.size()+7)/8);
-            for (unsigned int p = 0; p < vBits.size(); p++)
-                vBytes[p / 8] |= vBits[p] << (p % 8);
+            vBytes.resize((thisPtr->vBits.size()+7)/8);
+            for (unsigned int p = 0; p < thisPtr->vBits.size(); p++)
+                vBytes[p / 8] |= thisPtr->vBits[p] << (p % 8);
             READWRITE(vBytes);
         }
-    )
+
+        return nSerSize;
+    }
 
     // Construct a partial merkle tree from a list of transaction id's, and a mask that selects a subset of them
     CPartialMerkleTree(const std::vector<uint256> &vTxid, const std::vector<bool> &vMatch);
@@ -484,15 +507,22 @@ public:
     uint64_t nTimeFirst;         // earliest time of block in file
     uint64_t nTimeLast;          // latest time of block in file
 
-    IMPLEMENT_SERIALIZE(
-        READWRITE(VARINT(nBlocks));
-        READWRITE(VARINT(nSize));
-        READWRITE(VARINT(nUndoSize));
-        READWRITE(VARINT(nHeightFirst));
-        READWRITE(VARINT(nHeightLast));
-        READWRITE(VARINT(nTimeFirst));
-        READWRITE(VARINT(nTimeLast));
-     )
+    IMPLEMENT_SERIALIZE
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+
+        READWRITE(VARINT(thisPtr->nBlocks));
+        READWRITE(VARINT(thisPtr->nSize));
+        READWRITE(VARINT(thisPtr->nUndoSize));
+        READWRITE(VARINT(thisPtr->nHeightFirst));
+        READWRITE(VARINT(thisPtr->nHeightLast));
+        READWRITE(VARINT(thisPtr->nTimeFirst));
+        READWRITE(VARINT(thisPtr->nTimeLast));
+
+        return nSerSize;
+    }
 
      void SetNull() {
          nBlocks = 0;
@@ -756,28 +786,34 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+
         if (!(nType & SER_GETHASH))
             READWRITE(VARINT(nVersion));
 
-        READWRITE(VARINT(nHeight));
-        READWRITE(VARINT(nStatus));
-        READWRITE(VARINT(nTx));
-        if (nStatus & (BLOCK_HAVE_DATA | BLOCK_HAVE_UNDO))
-            READWRITE(VARINT(nFile));
-        if (nStatus & BLOCK_HAVE_DATA)
-            READWRITE(VARINT(nDataPos));
-        if (nStatus & BLOCK_HAVE_UNDO)
-            READWRITE(VARINT(nUndoPos));
+        READWRITE(VARINT(thisPtr->nHeight));
+        READWRITE(VARINT(thisPtr->nStatus));
+        READWRITE(VARINT(thisPtr->nTx));
+        if (thisPtr->nStatus & (BLOCK_HAVE_DATA | BLOCK_HAVE_UNDO))
+            READWRITE(VARINT(thisPtr->nFile));
+        if (thisPtr->nStatus & BLOCK_HAVE_DATA)
+            READWRITE(VARINT(thisPtr->nDataPos));
+        if (thisPtr->nStatus & BLOCK_HAVE_UNDO)
+            READWRITE(VARINT(thisPtr->nUndoPos));
 
         // block header
-        READWRITE(this->nVersion);
-        READWRITE(hashPrev);
-        READWRITE(hashMerkleRoot);
-        READWRITE(nTime);
-        READWRITE(nBits);
-        READWRITE(nNonce);
-    )
+        READWRITE(thisPtr->nVersion);
+        READWRITE(thisPtr->hashPrev);
+        READWRITE(thisPtr->hashMerkleRoot);
+        READWRITE(thisPtr->nTime);
+        READWRITE(thisPtr->nBits);
+        READWRITE(thisPtr->nNonce);
+
+        return nSerSize;
+    }
 
     uint256 GetBlockHash() const
     {
@@ -976,10 +1012,14 @@ public:
     CMerkleBlock(const CBlock& block, CBloomFilter& filter);
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(header);
-        READWRITE(txn);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->header);
+        READWRITE(thisPtr->txn);
+        return nSerSize;
+    }
 };
 
 
diff --git a/src/netbase.h b/src/netbase.h
index 2df3c4474d..6f8c132502 100644
--- a/src/netbase.h
+++ b/src/netbase.h
@@ -89,9 +89,13 @@ class CNetAddr
         friend bool operator<(const CNetAddr& a, const CNetAddr& b);
 
         IMPLEMENT_SERIALIZE
-            (
-             READWRITE(FLATDATA(ip));
-            )
+
+        template <typename T, typename Stream, typename Operation>
+        inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+            size_t nSerSize = 0;
+            READWRITE(FLATDATA(thisPtr->ip));
+            return nSerSize;
+        }
 };
 
 class CSubNet
@@ -149,14 +153,19 @@ class CService : public CNetAddr
         CService(const struct sockaddr_in6& addr);
 
         IMPLEMENT_SERIALIZE
-            (
-             CService* pthis = const_cast<CService*>(this);
-             READWRITE(FLATDATA(ip));
-             unsigned short portN = htons(port);
-             READWRITE(portN);
-             if (fRead)
+
+        template <typename T, typename Stream, typename Operation>
+        inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+            bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+            size_t nSerSize = 0;
+            CService* pthis = const_cast<CService*>(thisPtr);
+            READWRITE(FLATDATA(thisPtr->ip));
+            unsigned short portN = htons(thisPtr->port);
+            READWRITE(portN);
+            if (fRead)
                  pthis->port = ntohs(portN);
-            )
+            return nSerSize;
+        }
 };
 
 typedef CService proxyType;
diff --git a/src/protocol.h b/src/protocol.h
index d7565584af..851fca9d9e 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -36,12 +36,16 @@ class CMessageHeader
         bool IsValid() const;
 
         IMPLEMENT_SERIALIZE
-            (
-             READWRITE(FLATDATA(pchMessageStart));
-             READWRITE(FLATDATA(pchCommand));
-             READWRITE(nMessageSize);
-             READWRITE(nChecksum);
-            )
+
+        template <typename T, typename Stream, typename Operation>
+        inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+            size_t nSerSize = 0;
+            READWRITE(FLATDATA(thisPtr->pchMessageStart));
+            READWRITE(FLATDATA(thisPtr->pchCommand));
+            READWRITE(thisPtr->nMessageSize);
+            READWRITE(thisPtr->nChecksum);
+            return nSerSize;
+        }
 
     // TODO: make private (improves encapsulation)
     public:
@@ -84,19 +88,26 @@ class CAddress : public CService
         void Init();
 
         IMPLEMENT_SERIALIZE
-            (
-             CAddress* pthis = const_cast<CAddress*>(this);
-             CService* pip = (CService*)pthis;
-             if (fRead)
-                 pthis->Init();
-             if (nType & SER_DISK)
-                 READWRITE(nVersion);
-             if ((nType & SER_DISK) ||
-                 (nVersion >= CADDR_TIME_VERSION && !(nType & SER_GETHASH)))
-                 READWRITE(nTime);
-             READWRITE(nServices);
-             READWRITE(*pip);
-            )
+
+        template <typename T, typename Stream, typename Operation>
+        inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+            size_t nSerSize = 0;
+            bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+
+            CAddress* pthis = const_cast<CAddress*>(thisPtr);
+            CService* pip = (CService*)pthis;
+            if (fRead)
+                pthis->Init();
+            if (nType & SER_DISK)
+                READWRITE(nVersion);
+            if ((nType & SER_DISK) ||
+                (nVersion >= CADDR_TIME_VERSION && !(nType & SER_GETHASH)))
+            READWRITE(thisPtr->nTime);
+            READWRITE(thisPtr->nServices);
+            READWRITE(*pip);
+
+            return nSerSize;
+        }
 
     // TODO: make private (improves encapsulation)
     public:
@@ -118,10 +129,14 @@ class CInv
         CInv(const std::string& strType, const uint256& hashIn);
 
         IMPLEMENT_SERIALIZE
-        (
-            READWRITE(type);
-            READWRITE(hash);
-        )
+
+        template <typename T, typename Stream, typename Operation>
+        inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+            size_t nSerSize = 0;
+            READWRITE(thisPtr->type);
+            READWRITE(thisPtr->hash);
+            return nSerSize;
+        }
 
         friend bool operator<(const CInv& a, const CInv& b);
 
diff --git a/src/qt/recentrequeststablemodel.h b/src/qt/recentrequeststablemodel.h
index 4f0b241259..50962334f5 100644
--- a/src/qt/recentrequeststablemodel.h
+++ b/src/qt/recentrequeststablemodel.h
@@ -25,20 +25,27 @@ public:
     SendCoinsRecipient recipient;
 
     IMPLEMENT_SERIALIZE
-    (
-        RecentRequestEntry* pthis = const_cast<RecentRequestEntry*>(this);
 
-        unsigned int nDate = date.toTime_t();
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+
+        RecentRequestEntry* pthis = const_cast<RecentRequestEntry*>(thisPtr);
+
+        unsigned int nDate = thisPtr->date.toTime_t();
 
         READWRITE(pthis->nVersion);
         nVersion = pthis->nVersion;
-        READWRITE(id);
+        READWRITE(thisPtr->id);
         READWRITE(nDate);
-        READWRITE(recipient);
+        READWRITE(thisPtr->recipient);
 
         if (fRead)
             pthis->date = QDateTime::fromTime_t(nDate);
-    )
+
+        return nSerSize;
+    }
 };
 
 class RecentRequestEntryLessThan
diff --git a/src/qt/walletmodel.h b/src/qt/walletmodel.h
index b3a401e4cc..543843733c 100644
--- a/src/qt/walletmodel.h
+++ b/src/qt/walletmodel.h
@@ -60,8 +60,13 @@ public:
     int nVersion;
 
     IMPLEMENT_SERIALIZE
-    (
-        SendCoinsRecipient* pthis = const_cast<SendCoinsRecipient*>(this);
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+
+        SendCoinsRecipient* pthis = const_cast<SendCoinsRecipient*>(thisPtr);
 
         std::string sAddress = pthis->address.toStdString();
         std::string sLabel = pthis->label.toStdString();
@@ -75,7 +80,7 @@ public:
         nVersion = pthis->nVersion;
         READWRITE(sAddress);
         READWRITE(sLabel);
-        READWRITE(amount);
+        READWRITE(thisPtr->amount);
         READWRITE(sMessage);
         READWRITE(sPaymentRequest);
         READWRITE(sAuthenticatedMerchant);
@@ -89,7 +94,9 @@ public:
                 pthis->paymentRequest.parse(QByteArray::fromRawData(sPaymentRequest.data(), sPaymentRequest.size()));
             pthis->authenticatedMerchant = QString::fromStdString(sAuthenticatedMerchant);
         }
-    )
+
+        return nSerSize;
+    }
 };
 
 /** Interface to Bitcoin wallet from Qt view code. */
diff --git a/src/serialize.h b/src/serialize.h
index 17cb724bee..7e0ecc2edf 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -22,6 +22,7 @@
 
 #include <boost/tuple/tuple.hpp>
 #include <boost/type_traits/is_fundamental.hpp>
+#include <boost/typeof/typeof.hpp>
 
 class CAutoFile;
 class CDataStream;
@@ -37,6 +38,14 @@ inline T& REF(const T& val)
     return const_cast<T&>(val);
 }
 
+// Used to acquire a const pointer "this" and generate a const
+// serialization operation from a template
+template<typename T>
+inline T MAKE_CONST(T val)
+{
+    return const_cast<const T>(val);
+}
+
 /** Get begin pointer of vector (non-const version).
  * @note These functions avoid the undefined case of indexing into an empty
  * vector, as well as that of indexing after the end of the vector.
@@ -79,48 +88,27 @@ enum
     SER_GETHASH         = (1 << 2),
 };
 
-#define IMPLEMENT_SERIALIZE(statements)    \
-    unsigned int GetSerializeSize(int nType, int nVersion) const  \
-    {                                           \
-        CSerActionGetSerializeSize ser_action;  \
-        const bool fGetSize = true;             \
-        const bool fWrite = false;              \
-        const bool fRead = false;               \
-        unsigned int nSerSize = 0;              \
-        ser_streamplaceholder s;                \
-        assert(fGetSize||fWrite||fRead); /* suppress warning */ \
-        s.nType = nType;                        \
-        s.nVersion = nVersion;                  \
-        {statements}                            \
-        return nSerSize;                        \
-    }                                           \
-    template<typename Stream>                   \
-    void Serialize(Stream& s, int nType, int nVersion) const  \
-    {                                           \
-        CSerActionSerialize ser_action;         \
-        const bool fGetSize = false;            \
-        const bool fWrite = true;               \
-        const bool fRead = false;               \
-        unsigned int nSerSize = 0;              \
-        assert(fGetSize||fWrite||fRead); /* suppress warning */ \
-        {statements}                            \
-    }                                           \
-    template<typename Stream>                   \
-    void Unserialize(Stream& s, int nType, int nVersion)  \
-    {                                           \
-        CSerActionUnserialize ser_action;       \
-        const bool fGetSize = false;            \
-        const bool fWrite = false;              \
-        const bool fRead = true;                \
-        unsigned int nSerSize = 0;              \
-        assert(fGetSize||fWrite||fRead); /* suppress warning */ \
-        {statements}                            \
-    }
-
 #define READWRITE(obj)      (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action))
 
-
-
+/* Implement three methods for serializable objects. These are actually wrappers over
+ * "SerializationOp" template, which implements the body of each class' serialization
+ * code. Adding "IMPLEMENT_SERIALIZE" in the body of the class causes these wrappers to be
+ * added as members. */
+#define IMPLEMENT_SERIALIZE                                                                         \
+    size_t GetSerializeSize(int nType, int nVersion) const {                                        \
+        ser_streamplaceholder s;                                                                    \
+        s.nType = nType;                                                                            \
+        s.nVersion = nVersion;                                                                      \
+        return SerializationOp(MAKE_CONST(this), s, CSerActionGetSerializeSize(), nType, nVersion); \
+    }                                                                                               \
+    template<typename Stream>                                                                       \
+    void Serialize(Stream& s, int nType, int nVersion) const {                                      \
+        SerializationOp(MAKE_CONST(this), s, CSerActionSerialize(), nType, nVersion);               \
+    }                                                                                               \
+    template<typename Stream>                                                                       \
+    void Unserialize(Stream& s, int nType, int nVersion) {                                          \
+        SerializationOp(this, s, CSerActionUnserialize(), nType, nVersion);                         \
+    }
 
 
 
diff --git a/src/wallet.h b/src/wallet.h
index 544b4f5bfb..36b0bafe5a 100644
--- a/src/wallet.h
+++ b/src/wallet.h
@@ -64,12 +64,16 @@ public:
     CKeyPool(const CPubKey& vchPubKeyIn);
 
     IMPLEMENT_SERIALIZE
-    (
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
         if (!(nType & SER_GETHASH))
             READWRITE(nVersion);
-        READWRITE(nTime);
-        READWRITE(vchPubKey);
-    )
+        READWRITE(thisPtr->nTime);
+        READWRITE(thisPtr->vchPubKey);
+        return nSerSize;
+    }
 };
 
 /** Address book data */
@@ -489,16 +493,20 @@ public:
         fMerkleVerified = false;
     }
 
-
     IMPLEMENT_SERIALIZE
-    (
-        nSerSize += SerReadWrite(s, *(CTransaction*)this, nType, nVersion, ser_action);
-        nVersion = this->nVersion;
-        READWRITE(hashBlock);
-        READWRITE(vMerkleBranch);
-        READWRITE(nIndex);
-    )
 
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+
+        nSerSize += SerReadWrite(s, *(CTransaction*)thisPtr, nType, nVersion, ser_action);
+        nVersion = thisPtr->nVersion;
+        READWRITE(thisPtr->hashBlock);
+        READWRITE(thisPtr->vMerkleBranch);
+        READWRITE(thisPtr->nIndex);
+
+        return nSerSize;
+    }
 
     int SetMerkleBranch(const CBlock* pblock=NULL);
 
@@ -513,7 +521,6 @@ public:
     bool AcceptToMemoryPool(bool fLimitFree=true, bool fRejectInsaneFee=true);
 };
 
-
 /** A transaction with a bunch of additional info that only the owner cares about.
  * It includes any unrecorded transactions needed to link it back to the block chain.
  */
@@ -604,8 +611,13 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
-        CWalletTx* pthis = const_cast<CWalletTx*>(this);
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+
+        CWalletTx* pthis = const_cast<CWalletTx*>(thisPtr);
         if (fRead)
             pthis->Init(NULL);
         char fSpent = false;
@@ -616,18 +628,18 @@ public:
 
             WriteOrderPos(pthis->nOrderPos, pthis->mapValue);
 
-            if (nTimeSmart)
-                pthis->mapValue["timesmart"] = strprintf("%u", nTimeSmart);
+            if (thisPtr->nTimeSmart)
+                pthis->mapValue["timesmart"] = strprintf("%u", thisPtr->nTimeSmart);
         }
 
-        nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion,ser_action);
+        nSerSize += SerReadWrite(s, *(CMerkleTx*)thisPtr, nType, nVersion,ser_action);
         std::vector<CMerkleTx> vUnused; // Used to be vtxPrev
         READWRITE(vUnused);
-        READWRITE(mapValue);
-        READWRITE(vOrderForm);
-        READWRITE(fTimeReceivedIsTxTime);
-        READWRITE(nTimeReceived);
-        READWRITE(fFromMe);
+        READWRITE(thisPtr->mapValue);
+        READWRITE(thisPtr->vOrderForm);
+        READWRITE(thisPtr->fTimeReceivedIsTxTime);
+        READWRITE(thisPtr->nTimeReceived);
+        READWRITE(thisPtr->fFromMe);
         READWRITE(fSpent);
 
         if (fRead)
@@ -636,7 +648,7 @@ public:
 
             ReadOrderPos(pthis->nOrderPos, pthis->mapValue);
 
-            pthis->nTimeSmart = mapValue.count("timesmart") ? (unsigned int)atoi64(pthis->mapValue["timesmart"]) : 0;
+            pthis->nTimeSmart = thisPtr->mapValue.count("timesmart") ? (unsigned int)atoi64(pthis->mapValue["timesmart"]) : 0;
         }
 
         pthis->mapValue.erase("fromaccount");
@@ -644,7 +656,9 @@ public:
         pthis->mapValue.erase("spent");
         pthis->mapValue.erase("n");
         pthis->mapValue.erase("timesmart");
-    )
+
+        return nSerSize;
+    }
 
     // make sure balances are recalculated
     void MarkDirty()
@@ -891,14 +905,18 @@ public:
     CWalletKey(int64_t nExpires=0);
 
     IMPLEMENT_SERIALIZE
-    (
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
         if (!(nType & SER_GETHASH))
             READWRITE(nVersion);
-        READWRITE(vchPrivKey);
-        READWRITE(nTimeCreated);
-        READWRITE(nTimeExpires);
-        READWRITE(LIMITED_STRING(strComment, 65536));
-    )
+        READWRITE(thisPtr->vchPrivKey);
+        READWRITE(thisPtr->nTimeCreated);
+        READWRITE(thisPtr->nTimeExpires);
+        READWRITE(LIMITED_STRING(thisPtr->strComment, 65536));
+        return nSerSize;
+    }
 };
 
 
@@ -925,11 +943,15 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
         if (!(nType & SER_GETHASH))
             READWRITE(nVersion);
-        READWRITE(vchPubKey);
-    )
+        READWRITE(thisPtr->vchPubKey);
+        return nSerSize;
+    }
 };
 
 
@@ -966,38 +988,43 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
-        CAccountingEntry& me = *const_cast<CAccountingEntry*>(this);
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
+
+        CAccountingEntry& me = *const_cast<CAccountingEntry*>(thisPtr);
         if (!(nType & SER_GETHASH))
             READWRITE(nVersion);
         // Note: strAccount is serialized as part of the key, not here.
-        READWRITE(nCreditDebit);
-        READWRITE(nTime);
-        READWRITE(LIMITED_STRING(strOtherAccount, 65536));
+        READWRITE(thisPtr->nCreditDebit);
+        READWRITE(thisPtr->nTime);
+        READWRITE(LIMITED_STRING(thisPtr->strOtherAccount, 65536));
 
         if (!fRead)
         {
-            WriteOrderPos(nOrderPos, me.mapValue);
+            WriteOrderPos(thisPtr->nOrderPos, me.mapValue);
 
-            if (!(mapValue.empty() && _ssExtra.empty()))
+            if (!(thisPtr->mapValue.empty() && thisPtr->_ssExtra.empty()))
             {
                 CDataStream ss(nType, nVersion);
                 ss.insert(ss.begin(), '\0');
-                ss << mapValue;
-                ss.insert(ss.end(), _ssExtra.begin(), _ssExtra.end());
+                ss << thisPtr->mapValue;
+                ss.insert(ss.end(), thisPtr->_ssExtra.begin(), thisPtr->_ssExtra.end());
                 me.strComment.append(ss.str());
             }
         }
 
-        READWRITE(LIMITED_STRING(strComment, 65536));
+        READWRITE(LIMITED_STRING(thisPtr->strComment, 65536));
 
-        size_t nSepPos = strComment.find("\0", 0, 1);
+        size_t nSepPos = thisPtr->strComment.find("\0", 0, 1);
         if (fRead)
         {
             me.mapValue.clear();
             if (std::string::npos != nSepPos)
             {
-                CDataStream ss(std::vector<char>(strComment.begin() + nSepPos + 1, strComment.end()), nType, nVersion);
+                CDataStream ss(std::vector<char>(thisPtr->strComment.begin() + nSepPos + 1, thisPtr->strComment.end()), nType, nVersion);
                 ss >> me.mapValue;
                 me._ssExtra = std::vector<char>(ss.begin(), ss.end());
             }
@@ -1007,7 +1034,9 @@ public:
             me.strComment.erase(nSepPos);
 
         me.mapValue.erase("n");
-    )
+
+        return nSerSize;
+    }
 
 private:
     std::vector<char> _ssExtra;
diff --git a/src/walletdb.h b/src/walletdb.h
index 58b4571b16..e14c137ba8 100644
--- a/src/walletdb.h
+++ b/src/walletdb.h
@@ -55,11 +55,15 @@ public:
     }
 
     IMPLEMENT_SERIALIZE
-    (
-        READWRITE(this->nVersion);
-        nVersion = this->nVersion;
-        READWRITE(nCreateTime);
-    )
+
+    template <typename T, typename Stream, typename Operation>
+    inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
+        size_t nSerSize = 0;
+        READWRITE(thisPtr->nVersion);
+        nVersion = thisPtr->nVersion;
+        READWRITE(thisPtr->nCreateTime);
+        return nSerSize;
+    }
 
     void SetNull()
     {