transaction.cpp

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include <primitives/transaction.h>
 
#include <consensus/amount.h>
#include <hash.h>
#include <tinyformat.h>
#include <util/strencodings.h>
 
#include <cassert>
 
std::string COutPoint::ToString() const {
    return strprintf("COutPoint(%s, %u)", txid.ToString().substr(0, 10), n);
}
 
std::string CTxIn::ToString() const {
    std::string str;
    str += "CTxIn(";
    str += prevout.ToString();
    if (prevout.IsNull()) {
        str += strprintf(", coinbase %s", HexStr(scriptSig));
    } else {
        str += strprintf(", scriptSig=%s", HexStr(scriptSig).substr(0, 24));
    }
    if (nSequence != SEQUENCE_FINAL) {
        str += strprintf(", nSequence=%u", nSequence);
    }
    str += ")";
    return str;
}
 
std::string CTxOut::ToString() const {
    const Amount xec = 100 * SATOSHI;
    return strprintf("CTxOut(nValue=%d.%02d, scriptPubKey=%s)", nValue / xec,
                     (nValue % xec) / SATOSHI,
                     HexStr(scriptPubKey).substr(0, 30));
}
 
CMutableTransaction::CMutableTransaction()
    : nVersion(CTransaction::CURRENT_VERSION), nLockTime(0) {}
CMutableTransaction::CMutableTransaction(const CTransaction &tx)
    : vin(tx.vin), vout(tx.vout), nVersion(tx.nVersion),
      nLockTime(tx.nLockTime) {}
 
static uint256 ComputeCMutableTransactionHash(const CMutableTransaction &tx) {
    return SerializeHash(tx, SER_GETHASH, 0);
}
 
TxId CMutableTransaction::GetId() const {
    return TxId(ComputeCMutableTransactionHash(*this));
}
 
TxHash CMutableTransaction::GetHash() const {
    return TxHash(ComputeCMutableTransactionHash(*this));
}
 
uint256 CTransaction::ComputeHash() const {
    return SerializeHash(*this, SER_GETHASH, 0);
}
 
CTransaction::CTransaction()
    : vin(), vout(), nVersion(CTransaction::CURRENT_VERSION), nLockTime(0),
      hash() {}
CTransaction::CTransaction(const CMutableTransaction &tx)
    : vin(tx.vin), vout(tx.vout), nVersion(tx.nVersion),
      nLockTime(tx.nLockTime), hash(ComputeHash()) {}
CTransaction::CTransaction(CMutableTransaction &&tx)
    : vin(std::move(tx.vin)), vout(std::move(tx.vout)), nVersion(tx.nVersion),
      nLockTime(tx.nLockTime), hash(ComputeHash()) {}
 
Amount CTransaction::GetValueOut() const {
    Amount nValueOut = Amount::zero();
    for (const auto &tx_out : vout) {
        if (!MoneyRange(tx_out.nValue) ||
            !MoneyRange(nValueOut + tx_out.nValue)) {
            throw std::runtime_error(std::string(__func__) +
                                     ": value out of range");
        }
        nValueOut += tx_out.nValue;
    }
    assert(MoneyRange(nValueOut));
    return nValueOut;
}
 
unsigned int CTransaction::GetTotalSize() const {
    return ::GetSerializeSize(*this, PROTOCOL_VERSION);
}
 
std::string CTransaction::ToString() const {
    std::string str;
    str += strprintf("CTransaction(txid=%s, ver=%d, vin.size=%u, vout.size=%u, "
                     "nLockTime=%u)\n",
                     GetId().ToString().substr(0, 10), nVersion, vin.size(),
                     vout.size(), nLockTime);
    for (const auto &nVin : vin) {
        str += "    " + nVin.ToString() + "\n";
    }
    for (const auto &nVout : vout) {
        str += "    " + nVout.ToString() + "\n";
    }
    return str;
}