Refactor GetTxid() into UpdateTxid() to match coding style of hash member variable.
UpdateTxid() is called alongside UpdateHash() when a CTransaction is deserialized or constructed. GetTxid() now returns a const reference.
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@ -132,6 +132,7 @@ CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion
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joinSplitPubKey(tx.joinSplitPubKey), joinSplitSig(tx.joinSplitSig)
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{
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UpdateHash();
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UpdateTxid();
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}
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CTransaction& CTransaction::operator=(const CTransaction &tx) {
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@ -143,6 +144,7 @@ CTransaction& CTransaction::operator=(const CTransaction &tx) {
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*const_cast<uint256*>(&joinSplitPubKey) = tx.joinSplitPubKey;
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*const_cast<joinsplit_sig_t*>(&joinSplitSig) = tx.joinSplitSig;
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*const_cast<uint256*>(&hash) = tx.hash;
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*const_cast<uint256*>(&txid) = tx.txid;
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return *this;
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}
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@ -227,7 +229,7 @@ std::string CTransaction::ToString() const
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// Return a txid which is non-malleable.
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// Signature data is cleared before the transaction is serialized and hashed.
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uint256 CTransaction::GetTxid() const
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void CTransaction::UpdateTxid() const
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{
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// Create a deep copy of this transaction
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CMutableTransaction tx(*this);
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@ -241,10 +243,9 @@ uint256 CTransaction::GetTxid() const
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tx.joinSplitSig.assign(0);
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// Return double SHA256 hash
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return tx.GetSerializeHash();
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*const_cast<uint256*>(&txid) = tx.GetSerializeHash();
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}
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// Return a txid which is non-malleable.
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uint256 CMutableTransaction::GetTxid() const
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{
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@ -288,6 +288,8 @@ private:
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/** Memory only. */
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const uint256 hash;
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void UpdateHash() const;
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uint256 txid;
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void UpdateTxid() const;
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public:
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typedef boost::array<unsigned char, 64> joinsplit_sig_t;
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@ -331,8 +333,10 @@ public:
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READWRITE(*const_cast<joinsplit_sig_t*>(&joinSplitSig));
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}
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}
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if (ser_action.ForRead())
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if (ser_action.ForRead()) {
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UpdateHash();
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UpdateTxid();
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}
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}
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bool IsNull() const {
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@ -374,9 +378,10 @@ public:
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std::string ToString() const;
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// Return the txid which is the double SHA256 hash of the transaction.
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uint256 GetTxid() const;
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// Return the txid, which is the double SHA256 hash over portions of the transaction.
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const uint256& GetTxid() const {
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return txid;
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}
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};
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/** A mutable version of CTransaction. */
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