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Make CTransaction actually immutable

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This commit is contained in:
Pieter Wuille
2016-11-11 16:23:17 -08:00
parent 42fd8dee30
commit 81e3228fcb
10 changed files with 132 additions and 141 deletions
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27
src/primitives/transaction.cpp
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@@ -62,9 +62,9 @@ uint256 CMutableTransaction::GetHash() const
return SerializeHash(*this, SER_GETHASH, SERIALIZE_TRANSACTION_NO_WITNESS);
}
void CTransaction::UpdateHash() const
uint256 CTransaction::ComputeHash() const
{
*const_cast<uint256*>(&hash) = SerializeHash(*this, SER_GETHASH, SERIALIZE_TRANSACTION_NO_WITNESS);
return SerializeHash(*this, SER_GETHASH, SERIALIZE_TRANSACTION_NO_WITNESS);
}
uint256 CTransaction::GetWitnessHash() const
@@ -72,25 +72,10 @@ uint256 CTransaction::GetWitnessHash() const
return SerializeHash(*this, SER_GETHASH, 0);
}
CTransaction::CTransaction() : nVersion(CTransaction::CURRENT_VERSION), vin(), vout(), nLockTime(0) { }
CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), wit(tx.wit), nLockTime(tx.nLockTime) {
UpdateHash();
}
CTransaction::CTransaction(CMutableTransaction &&tx) : nVersion(tx.nVersion), vin(std::move(tx.vin)), vout(std::move(tx.vout)), wit(std::move(tx.wit)), nLockTime(tx.nLockTime) {
UpdateHash();
}
CTransaction& CTransaction::operator=(const CTransaction &tx) {
*const_cast<int*>(&nVersion) = tx.nVersion;
*const_cast<std::vector<CTxIn>*>(&vin) = tx.vin;
*const_cast<std::vector<CTxOut>*>(&vout) = tx.vout;
*const_cast<CTxWitness*>(&wit) = tx.wit;
*const_cast<unsigned int*>(&nLockTime) = tx.nLockTime;
*const_cast<uint256*>(&hash) = tx.hash;
return *this;
}
/* For backward compatibility, the hash is initialized to 0. TODO: remove the need for this default constructor entirely. */
CTransaction::CTransaction() : nVersion(CTransaction::CURRENT_VERSION), vin(), vout(), nLockTime(0), hash() {}
CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), wit(tx.wit), nLockTime(tx.nLockTime), hash(ComputeHash()) {}
CTransaction::CTransaction(CMutableTransaction &&tx) : nVersion(tx.nVersion), vin(std::move(tx.vin)), vout(std::move(tx.vout)), wit(std::move(tx.wit)), nLockTime(tx.nLockTime), hash(ComputeHash()) {}
CAmount CTransaction::GetValueOut() const
{