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Merge #8589: Inline CTxInWitness inside CTxIn

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f6fb7ac Move CTxInWitness inside CTxIn (Pieter Wuille)
This commit is contained in:
Wladimir J. van der Laan
2016-12-21 14:04:03 +01:00
parent 0698639a38 f6fb7acda4
commit e8cfe1ee2d
18 changed files with 96 additions and 176 deletions
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10
src/primitives/transaction.cpp
View File

@@ -55,7 +55,7 @@ std::string CTxOut::ToString() const
}
CMutableTransaction::CMutableTransaction() : nVersion(CTransaction::CURRENT_VERSION), nLockTime(0) {}
CMutableTransaction::CMutableTransaction(const CTransaction& tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), wit(tx.wit), nLockTime(tx.nLockTime) {}
CMutableTransaction::CMutableTransaction(const CTransaction& tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime) {}
uint256 CMutableTransaction::GetHash() const
{
@@ -74,8 +74,8 @@ uint256 CTransaction::GetWitnessHash() const
/* 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()) {}
CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion), vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime), hash(ComputeHash()) {}
CTransaction::CTransaction(CMutableTransaction &&tx) : nVersion(tx.nVersion), vin(std::move(tx.vin)), vout(std::move(tx.vout)), nLockTime(tx.nLockTime), hash(ComputeHash()) {}
CAmount CTransaction::GetValueOut() const
{
@@ -131,8 +131,8 @@ std::string CTransaction::ToString() const
nLockTime);
for (unsigned int i = 0; i < vin.size(); i++)
str += " " + vin[i].ToString() + "\n";
for (unsigned int i = 0; i < wit.vtxinwit.size(); i++)
str += " " + wit.vtxinwit[i].scriptWitness.ToString() + "\n";
for (unsigned int i = 0; i < vin.size(); i++)
str += " " + vin[i].scriptWitness.ToString() + "\n";
for (unsigned int i = 0; i < vout.size(); i++)
str += " " + vout[i].ToString() + "\n";
return str;

99
src/primitives/transaction.h
View File

@@ -65,6 +65,7 @@ public:
COutPoint prevout;
CScript scriptSig;
uint32_t nSequence;
CScriptWitness scriptWitness; //! Only serialized through CTransaction
/* Setting nSequence to this value for every input in a transaction
* disables nLockTime. */
@@ -211,62 +212,6 @@ public:
std::string ToString() const;
};
class CTxInWitness
{
public:
CScriptWitness scriptWitness;
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action)
{
READWRITE(scriptWitness.stack);
}
bool IsNull() const { return scriptWitness.IsNull(); }
CTxInWitness() { }
};
class CTxWitness
{
public:
/** In case vtxinwit is missing, all entries are treated as if they were empty CTxInWitnesses */
std::vector<CTxInWitness> vtxinwit;
ADD_SERIALIZE_METHODS;
bool IsEmpty() const { return vtxinwit.empty(); }
bool IsNull() const
{
for (size_t n = 0; n < vtxinwit.size(); n++) {
if (!vtxinwit[n].IsNull()) {
return false;
}
}
return true;
}
void SetNull()
{
vtxinwit.clear();
}
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action)
{
for (size_t n = 0; n < vtxinwit.size(); n++) {
READWRITE(vtxinwit[n]);
}
if (IsNull()) {
/* It's illegal to encode a witness when all vtxinwit entries are empty. */
throw std::ios_base::failure("Superfluous witness record");
}
}
};
struct CMutableTransaction;
/**
@@ -294,7 +239,6 @@ inline void UnserializeTransaction(TxType& tx, Stream& s) {
unsigned char flags = 0;
tx.vin.clear();
tx.vout.clear();
tx.wit.SetNull();
/* Try to read the vin. In case the dummy is there, this will be read as an empty vector. */
s >> tx.vin;
if (tx.vin.size() == 0 && fAllowWitness) {
@@ -311,8 +255,9 @@ inline void UnserializeTransaction(TxType& tx, Stream& s) {
if ((flags & 1) && fAllowWitness) {
/* The witness flag is present, and we support witnesses. */
flags ^= 1;
tx.wit.vtxinwit.resize(tx.vin.size());
s >> tx.wit;
for (size_t i = 0; i < tx.vin.size(); i++) {
s >> tx.vin[i].scriptWitness.stack;
}
}
if (flags) {
/* Unknown flag in the serialization */
@@ -328,10 +273,9 @@ inline void SerializeTransaction(const TxType& tx, Stream& s) {
s << tx.nVersion;
unsigned char flags = 0;
// Consistency check
assert(tx.wit.vtxinwit.size() <= tx.vin.size());
if (fAllowWitness) {
/* Check whether witnesses need to be serialized. */
if (!tx.wit.IsNull()) {
if (tx.HasWitness()) {
flags |= 1;
}
}
@@ -345,11 +289,7 @@ inline void SerializeTransaction(const TxType& tx, Stream& s) {
s << tx.vout;
if (flags & 1) {
for (size_t i = 0; i < tx.vin.size(); i++) {
if (i < tx.wit.vtxinwit.size()) {
s << tx.wit.vtxinwit[i];
} else {
s << CTxInWitness();
}
s << tx.vin[i].scriptWitness.stack;
}
}
s << tx.nLockTime;
@@ -379,7 +319,6 @@ public:
const int32_t nVersion;
const std::vector<CTxIn> vin;
const std::vector<CTxOut> vout;
CTxWitness wit; // Not const: can change without invalidating the txid cache
const uint32_t nLockTime;
private:
@@ -451,6 +390,16 @@ public:
}
std::string ToString() const;
bool HasWitness() const
{
for (size_t i = 0; i < vin.size(); i++) {
if (!vin[i].scriptWitness.IsNull()) {
return true;
}
}
return false;
}
};
/** A mutable version of CTransaction. */
@@ -459,7 +408,6 @@ struct CMutableTransaction
int32_t nVersion;
std::vector<CTxIn> vin;
std::vector<CTxOut> vout;
CTxWitness wit;
uint32_t nLockTime;
CMutableTransaction();
@@ -485,6 +433,21 @@ struct CMutableTransaction
* fly, as opposed to GetHash() in CTransaction, which uses a cached result.
*/
uint256 GetHash() const;
friend bool operator==(const CMutableTransaction& a, const CMutableTransaction& b)
{
return a.GetHash() == b.GetHash();
}
bool HasWitness() const
{
for (size_t i = 0; i < vin.size(); i++) {
if (!vin[i].scriptWitness.IsNull()) {
return true;
}
}
return false;
}
};
typedef std::shared_ptr<const CTransaction> CTransactionRef;