// NewBlockDeepCopy deep copies an entire block down to the wire components and
// returns the new block based off of this copy.
func NewBlockDeepCopy(msgBlock *wire.MsgBlock) *Block {
// Deep copy the header and all the transactions.
msgBlockCopy := new(wire.MsgBlock)
lenTxs := len(msgBlock.Transactions)
mtxsCopy := make([]*wire.MsgTx, lenTxs)
for i, mtx := range msgBlock.Transactions {
txd := NewTxDeep(mtx)
mtxsCopy[i] = txd.MsgTx()
}
msgBlockCopy.Transactions = mtxsCopy
lenStxs := len(msgBlock.STransactions)
smtxsCopy := make([]*wire.MsgTx, lenStxs)
for i, smtx := range msgBlock.STransactions {
stxd := NewTxDeep(smtx)
smtxsCopy[i] = stxd.MsgTx()
}
msgBlockCopy.STransactions = smtxsCopy
msgBlockCopy.Header = msgBlock.Header
bl := &Block{
blockHeight: int64(msgBlockCopy.Header.Height),
msgBlock: msgBlockCopy,
}
bl.hash = msgBlock.BlockHash()
return bl
}
// NewBlockDeepCopyCoinbase returns a new instance of a block given an underlying
// wire.MsgBlock, but makes a deep copy of the coinbase transaction since it's
// sometimes mutable.
func NewBlockDeepCopyCoinbase(msgBlock *wire.MsgBlock) *Block {
// Copy the msgBlock and the pointers to all the transactions.
msgBlockCopy := new(wire.MsgBlock)
lenTxs := len(msgBlock.Transactions)
mtxsCopy := make([]*wire.MsgTx, lenTxs)
for i, mtx := range msgBlock.Transactions {
mtxsCopy[i] = mtx
}
msgBlockCopy.Transactions = mtxsCopy
lenStxs := len(msgBlock.STransactions)
smtxsCopy := make([]*wire.MsgTx, lenStxs)
for i, smtx := range msgBlock.STransactions {
smtxsCopy[i] = smtx
}
msgBlockCopy.STransactions = smtxsCopy
msgBlockCopy.Header = msgBlock.Header
// Deep copy the first transaction. Also change the coinbase pointer.
msgBlockCopy.Transactions[0] =
NewTxDeep(msgBlockCopy.Transactions[0]).MsgTx()
bl := &Block{
blockHeight: int64(msgBlockCopy.Header.Height),
msgBlock: msgBlockCopy,
}
bl.hash = msgBlock.BlockHash()
return bl
}
