Add code comments about CNoteData::witnessHeight
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@ -762,6 +762,8 @@ void CWallet::DecrementNoteWitnesses(const CBlockIndex* pindex)
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if (nd->witnesses.size() > 0) {
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nd->witnesses.pop_front();
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}
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// pindex is the block being removed, so the new witness cache
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// height is one below it.
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nd->witnessHeight = pindex->nHeight - 1;
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}
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}
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@ -221,7 +221,15 @@ public:
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*/
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std::list<ZCIncrementalWitness> witnesses;
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/** Block height corresponding to the most current witness. */
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/**
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* Block height corresponding to the most current witness.
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*
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* When we first create a CNoteData in CWallet::FindMyNotes, this is set to
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* -1 as a placeholder. The next time CWallet::ChainTip is called, we can
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* determine what height the witness cache for this note is valid for (even
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* if no witnesses were cached), and so can set the correct value in
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* CWallet::IncrementNoteWitnesses and CWallet::DecrementNoteWitnesses.
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*/
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int witnessHeight;
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CNoteData() : address(), nullifier(), witnessHeight {-1} { }
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@ -616,9 +624,15 @@ public:
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void ClearNoteWitnessCache();
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protected:
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/**
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* pindex is the new tip being connected.
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*/
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void IncrementNoteWitnesses(const CBlockIndex* pindex,
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const CBlock* pblock,
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ZCIncrementalMerkleTree& tree);
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/**
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* pindex is the old tip being disconnected.
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*/
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void DecrementNoteWitnesses(const CBlockIndex* pindex);
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template <typename WalletDB>
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