Method GetCoin

src/txmempool.cpp:980–994

CCoinsViewMemPool::CCoinsViewMemPool(CCoinsView* baseIn, const CTxMemPool& mempoolIn) : CCoinsViewBacked(baseIn), mempool(mempoolIn) { }

bool CCoinsViewMemPool::GetCoin(const COutPoint &outpoint, CCoins &coin) const {
    // If an entry in the mempool exists, always return that one, as it's guaranteed to never
    // conflict with the underlying cache, and it cannot have pruned entries (as it contains full)
    // transactions. First checking the underlying cache risks returning a pruned entry instead.
    CTransactionRef ptx = mempool.get(outpoint.hash);
    if (ptx) {
        if (outpoint.n < ptx->vout.size()) {
            coin = CCoins(*ptx, MEMPOOL_HEIGHT);
            return true;
        } else {
            return false;
        }
    }
    return (base->GetCoins(outpoint.hash, coin) /*&& !coin.IsSpent()*/);
}

bool CCoinsViewMemPool::HaveCoin(const COutPoint &outpoint) const {
    return mempool.exists(outpoint) || base->HaveCoins(outpoint.hash);