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85 lines
3.0 KiB
85 lines
3.0 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2014 The Bitcoin Core developers |
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// Distributed under the MIT software license, see the accompanying |
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// file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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#ifndef BITCOIN_UNDO_H |
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#define BITCOIN_UNDO_H |
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#include "compressor.h" |
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#include "primitives/transaction.h" |
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#include "serialize.h" |
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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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ADD_SERIALIZE_METHODS; |
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template <typename Stream, typename Operation> |
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inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
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READWRITE(vprevout); |
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} |
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}; |
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/** Undo information for a CBlock */ |
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class CBlockUndo |
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{ |
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public: |
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std::vector<CTxUndo> vtxundo; // for all but the coinbase |
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ADD_SERIALIZE_METHODS; |
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template <typename Stream, typename Operation> |
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inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { |
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READWRITE(vtxundo); |
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} |
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}; |
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#endif // BITCOIN_UNDO_H
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