Moved CCoins, CTxOutCompressor, CTxInUndo, and CTxUndo to core.
This commit is contained in:
Eric Lombrozo
parent
05df3fc68d
commit
65e7bbef74
2 changed files with 332 additions and 330 deletions
332
src/core.h
332
src/core.h
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@ -340,4 +340,336 @@ public:
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}
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};
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/** wrapper for CTxOut that provides a more compact serialization */
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class CTxOutCompressor
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{
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private:
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CTxOut &txout;
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public:
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static uint64 CompressAmount(uint64 nAmount);
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static uint64 DecompressAmount(uint64 nAmount);
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CTxOutCompressor(CTxOut &txoutIn) : txout(txoutIn) { }
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IMPLEMENT_SERIALIZE(({
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if (!fRead) {
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uint64 nVal = CompressAmount(txout.nValue);
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READWRITE(VARINT(nVal));
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} else {
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uint64 nVal = 0;
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READWRITE(VARINT(nVal));
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txout.nValue = DecompressAmount(nVal);
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}
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CScriptCompressor cscript(REF(txout.scriptPubKey));
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READWRITE(cscript);
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});)
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};
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/** Undo information for a CTxIn
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*
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* Contains the prevout's CTxOut being spent, and if this was the
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* last output of the affected transaction, its metadata as well
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* (coinbase or not, height, transaction version)
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*/
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class CTxInUndo
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{
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public:
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CTxOut txout; // the txout data before being spent
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bool fCoinBase; // if the outpoint was the last unspent: whether it belonged to a coinbase
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unsigned int nHeight; // if the outpoint was the last unspent: its height
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int nVersion; // if the outpoint was the last unspent: its version
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CTxInUndo() : txout(), fCoinBase(false), nHeight(0), nVersion(0) {}
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CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, unsigned int nHeightIn = 0, int nVersionIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), nHeight(nHeightIn), nVersion(nVersionIn) { }
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unsigned int GetSerializeSize(int nType, int nVersion) const {
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return ::GetSerializeSize(VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion) +
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(nHeight > 0 ? ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion) : 0) +
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::GetSerializeSize(CTxOutCompressor(REF(txout)), nType, nVersion);
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}
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template<typename Stream>
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void Serialize(Stream &s, int nType, int nVersion) const {
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::Serialize(s, VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion);
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if (nHeight > 0)
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::Serialize(s, VARINT(this->nVersion), nType, nVersion);
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::Serialize(s, CTxOutCompressor(REF(txout)), nType, nVersion);
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}
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template<typename Stream>
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void Unserialize(Stream &s, int nType, int nVersion) {
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unsigned int nCode = 0;
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::Unserialize(s, VARINT(nCode), nType, nVersion);
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nHeight = nCode / 2;
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fCoinBase = nCode & 1;
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if (nHeight > 0)
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::Unserialize(s, VARINT(this->nVersion), nType, nVersion);
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::Unserialize(s, REF(CTxOutCompressor(REF(txout))), nType, nVersion);
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}
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};
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/** Undo information for a CTransaction */
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class CTxUndo
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{
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public:
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// undo information for all txins
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std::vector<CTxInUndo> vprevout;
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IMPLEMENT_SERIALIZE(
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READWRITE(vprevout);
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)
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};
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/** pruned version of CTransaction: only retains metadata and unspent transaction outputs
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*
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* Serialized format:
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* - VARINT(nVersion)
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* - VARINT(nCode)
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* - unspentness bitvector, for vout[2] and further; least significant byte first
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* - the non-spent CTxOuts (via CTxOutCompressor)
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* - VARINT(nHeight)
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*
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* The nCode value consists of:
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* - bit 1: IsCoinBase()
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* - bit 2: vout[0] is not spent
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* - bit 4: vout[1] is not spent
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* - The higher bits encode N, the number of non-zero bytes in the following bitvector.
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* - In case both bit 2 and bit 4 are unset, they encode N-1, as there must be at
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* least one non-spent output).
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*
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* Example: 0104835800816115944e077fe7c803cfa57f29b36bf87c1d358bb85e
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* <><><--------------------------------------------><---->
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* | \ | /
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* version code vout[1] height
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*
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* - version = 1
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* - code = 4 (vout[1] is not spent, and 0 non-zero bytes of bitvector follow)
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* - unspentness bitvector: as 0 non-zero bytes follow, it has length 0
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* - vout[1]: 835800816115944e077fe7c803cfa57f29b36bf87c1d35
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* * 8358: compact amount representation for 60000000000 (600 BTC)
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* * 00: special txout type pay-to-pubkey-hash
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* * 816115944e077fe7c803cfa57f29b36bf87c1d35: address uint160
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* - height = 203998
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*
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*
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* Example: 0109044086ef97d5790061b01caab50f1b8e9c50a5057eb43c2d9563a4eebbd123008c988f1a4a4de2161e0f50aac7f17e7f9555caa486af3b
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* <><><--><--------------------------------------------------><----------------------------------------------><---->
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* / \ \ | | /
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* version code unspentness vout[4] vout[16] height
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*
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* - version = 1
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* - code = 9 (coinbase, neither vout[0] or vout[1] are unspent,
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* 2 (1, +1 because both bit 2 and bit 4 are unset) non-zero bitvector bytes follow)
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* - unspentness bitvector: bits 2 (0x04) and 14 (0x4000) are set, so vout[2+2] and vout[14+2] are unspent
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* - vout[4]: 86ef97d5790061b01caab50f1b8e9c50a5057eb43c2d9563a4ee
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* * 86ef97d579: compact amount representation for 234925952 (2.35 BTC)
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* * 00: special txout type pay-to-pubkey-hash
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* * 61b01caab50f1b8e9c50a5057eb43c2d9563a4ee: address uint160
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* - vout[16]: bbd123008c988f1a4a4de2161e0f50aac7f17e7f9555caa4
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* * bbd123: compact amount representation for 110397 (0.001 BTC)
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* * 00: special txout type pay-to-pubkey-hash
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* * 8c988f1a4a4de2161e0f50aac7f17e7f9555caa4: address uint160
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* - height = 120891
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*/
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class CCoins
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{
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public:
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// whether transaction is a coinbase
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bool fCoinBase;
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// unspent transaction outputs; spent outputs are .IsNull(); spent outputs at the end of the array are dropped
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std::vector<CTxOut> vout;
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// at which height this transaction was included in the active block chain
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int nHeight;
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// version of the CTransaction; accesses to this value should probably check for nHeight as well,
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// as new tx version will probably only be introduced at certain heights
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int nVersion;
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// construct a CCoins from a CTransaction, at a given height
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CCoins(const CTransaction &tx, int nHeightIn) : fCoinBase(tx.IsCoinBase()), vout(tx.vout), nHeight(nHeightIn), nVersion(tx.nVersion) { }
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// empty constructor
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CCoins() : fCoinBase(false), vout(0), nHeight(0), nVersion(0) { }
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// remove spent outputs at the end of vout
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void Cleanup() {
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while (vout.size() > 0 && vout.back().IsNull())
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vout.pop_back();
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if (vout.empty())
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std::vector<CTxOut>().swap(vout);
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}
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void swap(CCoins &to) {
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std::swap(to.fCoinBase, fCoinBase);
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to.vout.swap(vout);
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std::swap(to.nHeight, nHeight);
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std::swap(to.nVersion, nVersion);
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}
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// equality test
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friend bool operator==(const CCoins &a, const CCoins &b) {
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return a.fCoinBase == b.fCoinBase &&
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a.nHeight == b.nHeight &&
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a.nVersion == b.nVersion &&
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a.vout == b.vout;
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}
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friend bool operator!=(const CCoins &a, const CCoins &b) {
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return !(a == b);
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}
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// calculate number of bytes for the bitmask, and its number of non-zero bytes
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// each bit in the bitmask represents the availability of one output, but the
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// availabilities of the first two outputs are encoded separately
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void CalcMaskSize(unsigned int &nBytes, unsigned int &nNonzeroBytes) const {
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unsigned int nLastUsedByte = 0;
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for (unsigned int b = 0; 2+b*8 < vout.size(); b++) {
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bool fZero = true;
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for (unsigned int i = 0; i < 8 && 2+b*8+i < vout.size(); i++) {
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if (!vout[2+b*8+i].IsNull()) {
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fZero = false;
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continue;
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}
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}
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if (!fZero) {
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nLastUsedByte = b + 1;
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nNonzeroBytes++;
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}
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}
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nBytes += nLastUsedByte;
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}
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bool IsCoinBase() const {
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return fCoinBase;
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}
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unsigned int GetSerializeSize(int nType, int nVersion) const {
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unsigned int nSize = 0;
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unsigned int nMaskSize = 0, nMaskCode = 0;
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CalcMaskSize(nMaskSize, nMaskCode);
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bool fFirst = vout.size() > 0 && !vout[0].IsNull();
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bool fSecond = vout.size() > 1 && !vout[1].IsNull();
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assert(fFirst || fSecond || nMaskCode);
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unsigned int nCode = 8*(nMaskCode - (fFirst || fSecond ? 0 : 1)) + (fCoinBase ? 1 : 0) + (fFirst ? 2 : 0) + (fSecond ? 4 : 0);
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// version
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nSize += ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion);
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// size of header code
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nSize += ::GetSerializeSize(VARINT(nCode), nType, nVersion);
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// spentness bitmask
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nSize += nMaskSize;
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// txouts themself
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for (unsigned int i = 0; i < vout.size(); i++)
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if (!vout[i].IsNull())
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nSize += ::GetSerializeSize(CTxOutCompressor(REF(vout[i])), nType, nVersion);
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// height
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nSize += ::GetSerializeSize(VARINT(nHeight), nType, nVersion);
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return nSize;
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}
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template<typename Stream>
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void Serialize(Stream &s, int nType, int nVersion) const {
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unsigned int nMaskSize = 0, nMaskCode = 0;
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CalcMaskSize(nMaskSize, nMaskCode);
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bool fFirst = vout.size() > 0 && !vout[0].IsNull();
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bool fSecond = vout.size() > 1 && !vout[1].IsNull();
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assert(fFirst || fSecond || nMaskCode);
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unsigned int nCode = 8*(nMaskCode - (fFirst || fSecond ? 0 : 1)) + (fCoinBase ? 1 : 0) + (fFirst ? 2 : 0) + (fSecond ? 4 : 0);
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// version
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::Serialize(s, VARINT(this->nVersion), nType, nVersion);
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// header code
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::Serialize(s, VARINT(nCode), nType, nVersion);
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// spentness bitmask
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for (unsigned int b = 0; b<nMaskSize; b++) {
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unsigned char chAvail = 0;
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for (unsigned int i = 0; i < 8 && 2+b*8+i < vout.size(); i++)
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if (!vout[2+b*8+i].IsNull())
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chAvail |= (1 << i);
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::Serialize(s, chAvail, nType, nVersion);
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}
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// txouts themself
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for (unsigned int i = 0; i < vout.size(); i++) {
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if (!vout[i].IsNull())
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::Serialize(s, CTxOutCompressor(REF(vout[i])), nType, nVersion);
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}
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// coinbase height
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::Serialize(s, VARINT(nHeight), nType, nVersion);
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}
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template<typename Stream>
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void Unserialize(Stream &s, int nType, int nVersion) {
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unsigned int nCode = 0;
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// version
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::Unserialize(s, VARINT(this->nVersion), nType, nVersion);
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// header code
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::Unserialize(s, VARINT(nCode), nType, nVersion);
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fCoinBase = nCode & 1;
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std::vector<bool> vAvail(2, false);
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vAvail[0] = nCode & 2;
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vAvail[1] = nCode & 4;
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unsigned int nMaskCode = (nCode / 8) + ((nCode & 6) != 0 ? 0 : 1);
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// spentness bitmask
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while (nMaskCode > 0) {
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unsigned char chAvail = 0;
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::Unserialize(s, chAvail, nType, nVersion);
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for (unsigned int p = 0; p < 8; p++) {
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bool f = (chAvail & (1 << p)) != 0;
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vAvail.push_back(f);
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}
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if (chAvail != 0)
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nMaskCode--;
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}
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// txouts themself
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vout.assign(vAvail.size(), CTxOut());
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for (unsigned int i = 0; i < vAvail.size(); i++) {
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if (vAvail[i])
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::Unserialize(s, REF(CTxOutCompressor(vout[i])), nType, nVersion);
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}
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// coinbase height
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::Unserialize(s, VARINT(nHeight), nType, nVersion);
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Cleanup();
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}
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// mark an outpoint spent, and construct undo information
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bool Spend(const COutPoint &out, CTxInUndo &undo) {
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if (out.n >= vout.size())
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return false;
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if (vout[out.n].IsNull())
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return false;
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undo = CTxInUndo(vout[out.n]);
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vout[out.n].SetNull();
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Cleanup();
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if (vout.size() == 0) {
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undo.nHeight = nHeight;
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undo.fCoinBase = fCoinBase;
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undo.nVersion = this->nVersion;
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}
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return true;
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}
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// mark a vout spent
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bool Spend(int nPos) {
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CTxInUndo undo;
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COutPoint out(0, nPos);
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return Spend(out, undo);
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}
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// check whether a particular output is still available
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bool IsAvailable(unsigned int nPos) const {
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return (nPos < vout.size() && !vout[nPos].IsNull());
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}
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// check whether the entire CCoins is spent
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// note that only !IsPruned() CCoins can be serialized
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bool IsPruned() const {
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BOOST_FOREACH(const CTxOut &out, vout)
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if (!out.IsNull())
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return false;
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return true;
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}
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};
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#endif
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330
src/main.h
330
src/main.h
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@ -328,88 +328,6 @@ bool IsFinalTx(const CTransaction &tx, int nBlockHeight = 0, int64 nBlockTime =
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*/
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int64 GetValueOut(const CTransaction& tx);
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/** wrapper for CTxOut that provides a more compact serialization */
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class CTxOutCompressor
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{
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private:
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CTxOut &txout;
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public:
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static uint64 CompressAmount(uint64 nAmount);
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static uint64 DecompressAmount(uint64 nAmount);
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CTxOutCompressor(CTxOut &txoutIn) : txout(txoutIn) { }
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IMPLEMENT_SERIALIZE(({
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if (!fRead) {
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uint64 nVal = CompressAmount(txout.nValue);
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READWRITE(VARINT(nVal));
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} else {
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uint64 nVal = 0;
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READWRITE(VARINT(nVal));
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txout.nValue = DecompressAmount(nVal);
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}
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CScriptCompressor cscript(REF(txout.scriptPubKey));
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READWRITE(cscript);
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});)
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};
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/** Undo information for a CTxIn
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*
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* Contains the prevout's CTxOut being spent, and if this was the
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* last output of the affected transaction, its metadata as well
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* (coinbase or not, height, transaction version)
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*/
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class CTxInUndo
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{
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public:
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CTxOut txout; // the txout data before being spent
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bool fCoinBase; // if the outpoint was the last unspent: whether it belonged to a coinbase
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unsigned int nHeight; // if the outpoint was the last unspent: its height
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int nVersion; // if the outpoint was the last unspent: its version
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CTxInUndo() : txout(), fCoinBase(false), nHeight(0), nVersion(0) {}
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CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, unsigned int nHeightIn = 0, int nVersionIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), nHeight(nHeightIn), nVersion(nVersionIn) { }
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unsigned int GetSerializeSize(int nType, int nVersion) const {
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return ::GetSerializeSize(VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion) +
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(nHeight > 0 ? ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion) : 0) +
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::GetSerializeSize(CTxOutCompressor(REF(txout)), nType, nVersion);
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}
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template<typename Stream>
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void Serialize(Stream &s, int nType, int nVersion) const {
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::Serialize(s, VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion);
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if (nHeight > 0)
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::Serialize(s, VARINT(this->nVersion), nType, nVersion);
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::Serialize(s, CTxOutCompressor(REF(txout)), nType, nVersion);
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}
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template<typename Stream>
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void Unserialize(Stream &s, int nType, int nVersion) {
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unsigned int nCode = 0;
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::Unserialize(s, VARINT(nCode), nType, nVersion);
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nHeight = nCode / 2;
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fCoinBase = nCode & 1;
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if (nHeight > 0)
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::Unserialize(s, VARINT(this->nVersion), nType, nVersion);
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::Unserialize(s, REF(CTxOutCompressor(REF(txout))), nType, nVersion);
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}
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};
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/** Undo information for a CTransaction */
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class CTxUndo
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{
|
||||
public:
|
||||
// undo information for all txins
|
||||
std::vector<CTxInUndo> vprevout;
|
||||
|
||||
IMPLEMENT_SERIALIZE(
|
||||
READWRITE(vprevout);
|
||||
)
|
||||
};
|
||||
|
||||
/** Undo information for a CBlock */
|
||||
class CBlockUndo
|
||||
{
|
||||
|
|
@ -480,254 +398,6 @@ public:
|
|||
}
|
||||
};
|
||||
|
||||
/** pruned version of CTransaction: only retains metadata and unspent transaction outputs
|
||||
*
|
||||
* Serialized format:
|
||||
* - VARINT(nVersion)
|
||||
* - VARINT(nCode)
|
||||
* - unspentness bitvector, for vout[2] and further; least significant byte first
|
||||
* - the non-spent CTxOuts (via CTxOutCompressor)
|
||||
* - VARINT(nHeight)
|
||||
*
|
||||
* The nCode value consists of:
|
||||
* - bit 1: IsCoinBase()
|
||||
* - bit 2: vout[0] is not spent
|
||||
* - bit 4: vout[1] is not spent
|
||||
* - The higher bits encode N, the number of non-zero bytes in the following bitvector.
|
||||
* - In case both bit 2 and bit 4 are unset, they encode N-1, as there must be at
|
||||
* least one non-spent output).
|
||||
*
|
||||
* Example: 0104835800816115944e077fe7c803cfa57f29b36bf87c1d358bb85e
|
||||
* <><><--------------------------------------------><---->
|
||||
* | \ | /
|
||||
* version code vout[1] height
|
||||
*
|
||||
* - version = 1
|
||||
* - code = 4 (vout[1] is not spent, and 0 non-zero bytes of bitvector follow)
|
||||
* - unspentness bitvector: as 0 non-zero bytes follow, it has length 0
|
||||
* - vout[1]: 835800816115944e077fe7c803cfa57f29b36bf87c1d35
|
||||
* * 8358: compact amount representation for 60000000000 (600 BTC)
|
||||
* * 00: special txout type pay-to-pubkey-hash
|
||||
* * 816115944e077fe7c803cfa57f29b36bf87c1d35: address uint160
|
||||
* - height = 203998
|
||||
*
|
||||
*
|
||||
* Example: 0109044086ef97d5790061b01caab50f1b8e9c50a5057eb43c2d9563a4eebbd123008c988f1a4a4de2161e0f50aac7f17e7f9555caa486af3b
|
||||
* <><><--><--------------------------------------------------><----------------------------------------------><---->
|
||||
* / \ \ | | /
|
||||
* version code unspentness vout[4] vout[16] height
|
||||
*
|
||||
* - version = 1
|
||||
* - code = 9 (coinbase, neither vout[0] or vout[1] are unspent,
|
||||
* 2 (1, +1 because both bit 2 and bit 4 are unset) non-zero bitvector bytes follow)
|
||||
* - unspentness bitvector: bits 2 (0x04) and 14 (0x4000) are set, so vout[2+2] and vout[14+2] are unspent
|
||||
* - vout[4]: 86ef97d5790061b01caab50f1b8e9c50a5057eb43c2d9563a4ee
|
||||
* * 86ef97d579: compact amount representation for 234925952 (2.35 BTC)
|
||||
* * 00: special txout type pay-to-pubkey-hash
|
||||
* * 61b01caab50f1b8e9c50a5057eb43c2d9563a4ee: address uint160
|
||||
* - vout[16]: bbd123008c988f1a4a4de2161e0f50aac7f17e7f9555caa4
|
||||
* * bbd123: compact amount representation for 110397 (0.001 BTC)
|
||||
* * 00: special txout type pay-to-pubkey-hash
|
||||
* * 8c988f1a4a4de2161e0f50aac7f17e7f9555caa4: address uint160
|
||||
* - height = 120891
|
||||
*/
|
||||
class CCoins
|
||||
{
|
||||
public:
|
||||
// whether transaction is a coinbase
|
||||
bool fCoinBase;
|
||||
|
||||
// unspent transaction outputs; spent outputs are .IsNull(); spent outputs at the end of the array are dropped
|
||||
std::vector<CTxOut> vout;
|
||||
|
||||
// at which height this transaction was included in the active block chain
|
||||
int nHeight;
|
||||
|
||||
// version of the CTransaction; accesses to this value should probably check for nHeight as well,
|
||||
// as new tx version will probably only be introduced at certain heights
|
||||
int nVersion;
|
||||
|
||||
// construct a CCoins from a CTransaction, at a given height
|
||||
CCoins(const CTransaction &tx, int nHeightIn) : fCoinBase(tx.IsCoinBase()), vout(tx.vout), nHeight(nHeightIn), nVersion(tx.nVersion) { }
|
||||
|
||||
// empty constructor
|
||||
CCoins() : fCoinBase(false), vout(0), nHeight(0), nVersion(0) { }
|
||||
|
||||
// remove spent outputs at the end of vout
|
||||
void Cleanup() {
|
||||
while (vout.size() > 0 && vout.back().IsNull())
|
||||
vout.pop_back();
|
||||
if (vout.empty())
|
||||
std::vector<CTxOut>().swap(vout);
|
||||
}
|
||||
|
||||
void swap(CCoins &to) {
|
||||
std::swap(to.fCoinBase, fCoinBase);
|
||||
to.vout.swap(vout);
|
||||
std::swap(to.nHeight, nHeight);
|
||||
std::swap(to.nVersion, nVersion);
|
||||
}
|
||||
|
||||
// equality test
|
||||
friend bool operator==(const CCoins &a, const CCoins &b) {
|
||||
return a.fCoinBase == b.fCoinBase &&
|
||||
a.nHeight == b.nHeight &&
|
||||
a.nVersion == b.nVersion &&
|
||||
a.vout == b.vout;
|
||||
}
|
||||
friend bool operator!=(const CCoins &a, const CCoins &b) {
|
||||
return !(a == b);
|
||||
}
|
||||
|
||||
// calculate number of bytes for the bitmask, and its number of non-zero bytes
|
||||
// each bit in the bitmask represents the availability of one output, but the
|
||||
// availabilities of the first two outputs are encoded separately
|
||||
void CalcMaskSize(unsigned int &nBytes, unsigned int &nNonzeroBytes) const {
|
||||
unsigned int nLastUsedByte = 0;
|
||||
for (unsigned int b = 0; 2+b*8 < vout.size(); b++) {
|
||||
bool fZero = true;
|
||||
for (unsigned int i = 0; i < 8 && 2+b*8+i < vout.size(); i++) {
|
||||
if (!vout[2+b*8+i].IsNull()) {
|
||||
fZero = false;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
if (!fZero) {
|
||||
nLastUsedByte = b + 1;
|
||||
nNonzeroBytes++;
|
||||
}
|
||||
}
|
||||
nBytes += nLastUsedByte;
|
||||
}
|
||||
|
||||
bool IsCoinBase() const {
|
||||
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;
|
||||
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
|
||||
::Serialize(s, VARINT(this->nVersion), nType, nVersion);
|
||||
// header code
|
||||
::Serialize(s, VARINT(nCode), nType, nVersion);
|
||||
// spentness bitmask
|
||||
for (unsigned int b = 0; b<nMaskSize; b++) {
|
||||
unsigned char chAvail = 0;
|
||||
for (unsigned int i = 0; i < 8 && 2+b*8+i < vout.size(); i++)
|
||||
if (!vout[2+b*8+i].IsNull())
|
||||
chAvail |= (1 << i);
|
||||
::Serialize(s, chAvail, nType, nVersion);
|
||||
}
|
||||
// txouts themself
|
||||
for (unsigned int i = 0; i < vout.size(); i++) {
|
||||
if (!vout[i].IsNull())
|
||||
::Serialize(s, CTxOutCompressor(REF(vout[i])), nType, nVersion);
|
||||
}
|
||||
// coinbase height
|
||||
::Serialize(s, VARINT(nHeight), nType, nVersion);
|
||||
}
|
||||
|
||||
template<typename Stream>
|
||||
void Unserialize(Stream &s, int nType, int nVersion) {
|
||||
unsigned int nCode = 0;
|
||||
// version
|
||||
::Unserialize(s, VARINT(this->nVersion), nType, nVersion);
|
||||
// header code
|
||||
::Unserialize(s, VARINT(nCode), nType, nVersion);
|
||||
fCoinBase = nCode & 1;
|
||||
std::vector<bool> vAvail(2, false);
|
||||
vAvail[0] = nCode & 2;
|
||||
vAvail[1] = nCode & 4;
|
||||
unsigned int nMaskCode = (nCode / 8) + ((nCode & 6) != 0 ? 0 : 1);
|
||||
// spentness bitmask
|
||||
while (nMaskCode > 0) {
|
||||
unsigned char chAvail = 0;
|
||||
::Unserialize(s, chAvail, nType, nVersion);
|
||||
for (unsigned int p = 0; p < 8; p++) {
|
||||
bool f = (chAvail & (1 << p)) != 0;
|
||||
vAvail.push_back(f);
|
||||
}
|
||||
if (chAvail != 0)
|
||||
nMaskCode--;
|
||||
}
|
||||
// txouts themself
|
||||
vout.assign(vAvail.size(), CTxOut());
|
||||
for (unsigned int i = 0; i < vAvail.size(); i++) {
|
||||
if (vAvail[i])
|
||||
::Unserialize(s, REF(CTxOutCompressor(vout[i])), nType, nVersion);
|
||||
}
|
||||
// coinbase height
|
||||
::Unserialize(s, VARINT(nHeight), nType, nVersion);
|
||||
Cleanup();
|
||||
}
|
||||
|
||||
// mark an outpoint spent, and construct undo information
|
||||
bool Spend(const COutPoint &out, CTxInUndo &undo) {
|
||||
if (out.n >= vout.size())
|
||||
return false;
|
||||
if (vout[out.n].IsNull())
|
||||
return false;
|
||||
undo = CTxInUndo(vout[out.n]);
|
||||
vout[out.n].SetNull();
|
||||
Cleanup();
|
||||
if (vout.size() == 0) {
|
||||
undo.nHeight = nHeight;
|
||||
undo.fCoinBase = fCoinBase;
|
||||
undo.nVersion = this->nVersion;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// mark a vout spent
|
||||
bool Spend(int nPos) {
|
||||
CTxInUndo undo;
|
||||
COutPoint out(0, nPos);
|
||||
return Spend(out, undo);
|
||||
}
|
||||
|
||||
// check whether a particular output is still available
|
||||
bool IsAvailable(unsigned int nPos) const {
|
||||
return (nPos < vout.size() && !vout[nPos].IsNull());
|
||||
}
|
||||
|
||||
// check whether the entire CCoins is spent
|
||||
// note that only !IsPruned() CCoins can be serialized
|
||||
bool IsPruned() const {
|
||||
BOOST_FOREACH(const CTxOut &out, vout)
|
||||
if (!out.IsNull())
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
/** Closure representing one script verification
|
||||
* Note that this stores references to the spending transaction */
|
||||
|
|
|
|||
Loading…
Reference in a new issue