1 files changed, 64 insertions, 0 deletions
diff --git a/src/wallet/spend.h b/src/wallet/spend.h
new file mode 100644
index 0000000000..03f9a7c2b5
--- /dev/null
+++ b/src/wallet/spend.h
@@ -0,0 +1,64 @@
+// Copyright (c) 2021 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_WALLET_SPEND_H
+#define BITCOIN_WALLET_SPEND_H
+
+#include <wallet/coinselection.h>
+#include <wallet/transaction.h>
+#include <wallet/wallet.h>
+
+class COutput
+{
+public:
+    const CWalletTx *tx;
+
+    /** Index in tx->vout. */
+    int i;
+
+    /**
+     * Depth in block chain.
+     * If > 0: the tx is on chain and has this many confirmations.
+     * If = 0: the tx is waiting confirmation.
+     * If < 0: a conflicting tx is on chain and has this many confirmations. */
+    int nDepth;
+
+    /** Pre-computed estimated size of this output as a fully-signed input in a transaction. Can be -1 if it could not be calculated */
+    int nInputBytes;
+
+    /** Whether we have the private keys to spend this output */
+    bool fSpendable;
+
+    /** Whether we know how to spend this output, ignoring the lack of keys */
+    bool fSolvable;
+
+    /** Whether to use the maximum sized, 72 byte signature when calculating the size of the input spend. This should only be set when watch-only outputs are allowed */
+    bool use_max_sig;
+
+    /**
+     * Whether this output is considered safe to spend. Unconfirmed transactions
+     * from outside keys and unconfirmed replacement transactions are considered
+     * unsafe and will not be used to fund new spending transactions.
+     */
+    bool fSafe;
+
+    COutput(const CWalletTx *txIn, int iIn, int nDepthIn, bool fSpendableIn, bool fSolvableIn, bool fSafeIn, bool use_max_sig_in = false)
+    {
+        tx = txIn; i = iIn; nDepth = nDepthIn; fSpendable = fSpendableIn; fSolvable = fSolvableIn; fSafe = fSafeIn; nInputBytes = -1; use_max_sig = use_max_sig_in;
+        // If known and signable by the given wallet, compute nInputBytes
+        // Failure will keep this value -1
+        if (fSpendable && tx) {
+            nInputBytes = tx->GetSpendSize(i, use_max_sig);
+        }
+    }
+
+    std::string ToString() const;
+
+    inline CInputCoin GetInputCoin() const
+    {
+        return CInputCoin(tx->tx, i, nInputBytes);
+    }
+};
+
+#endif // BITCOIN_WALLET_SPEND_H