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improve documentation of the encoding methods

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This commit is contained in:
Ian Norden 2021-05-03 12:58:19 -05:00
parent 4336bf63eb
commit b13ce2a6ba
2 changed files with 23 additions and 13 deletions
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26
core/types/receipt.go
View File

@ -139,6 +139,9 @@ func NewReceipt(root []byte, failed bool, cumulativeGasUsed uint64) *Receipt {
// EncodeRLP implements rlp.Encoder, and flattens the consensus fields of a receipt
// into an RLP stream. If no post state is present, byzantium fork is assumed.
// For a legacy Receipt this returns RLP([PostStateOrStatus, CumulativeGasUsed, Bloom, Logs])
// For a EIP-2718 Receipt this returns RLP(TxType || ReceiptPayload)
// For a EIP-2930 Receipt, TxType == 0x01 and ReceiptPayload == RLP([PostStateOrStatus, CumulativeGasUsed, Bloom, Logs])
func (r *Receipt) EncodeRLP(w io.Writer) error {
data := &receiptRLP{r.statusEncoding(), r.CumulativeGasUsed, r.Bloom, r.Logs}
if r.Type == LegacyTxType {
@ -151,16 +154,22 @@ func (r *Receipt) EncodeRLP(w io.Writer) error {
buf := encodeBufferPool.Get().(*bytes.Buffer)
defer encodeBufferPool.Put(buf)
buf.Reset()
buf.WriteByte(r.Type)
if err := rlp.Encode(buf, data); err != nil {
if err := r.encodeTyped(data, buf); err != nil {
return err
}
return rlp.Encode(w, buf.Bytes())
}
// MarshalBinary returns the canonical encoding of the receipt.
// For legacy receipts, it returns the RLP encoding. For EIP-2718 typed
// receipts, it returns the `type || RLP encoding`.
// encodeTyped writes the canonical encoding of a typed receipt to w.
func (r *Receipt) encodeTyped(data *receiptRLP, w *bytes.Buffer) error {
w.WriteByte(r.Type)
return rlp.Encode(w, data)
}
// MarshalBinary returns the canonical consensus encoding of the receipt.
// For a legacy Receipt this returns RLP([PostStateOrStatus, CumulativeGasUsed, Bloom, Logs])
// For a EIP-2718 Receipt this returns TxType || ReceiptPayload
// For a EIP-2930, TxType == 0x01 and ReceiptPayload == RLP([PostStateOrStatus, CumulativeGasUsed, Bloom, Logs])
func (r *Receipt) MarshalBinary() ([]byte, error) {
if r.Type == LegacyTxType {
return rlp.EncodeToBytes(r)
@ -169,11 +178,8 @@ func (r *Receipt) MarshalBinary() ([]byte, error) {
buf := encodeBufferPool.Get().(*bytes.Buffer)
defer encodeBufferPool.Put(buf)
buf.Reset()
buf.WriteByte(r.Type)
if err := rlp.Encode(buf, data); err != nil {
return nil, err
}
return buf.Bytes(), nil
err := r.encodeTyped(data, buf)
return buf.Bytes(), err
}
// DecodeRLP implements rlp.Decoder, and loads the consensus fields of a receipt

10
core/types/transaction.go
View File

@ -83,6 +83,9 @@ type TxData interface {
}
// EncodeRLP implements rlp.Encoder
// For a legacy Transaction this returns RLP([AccountNonce, GasPrice, GasLimit, Recipient, Amount, Data, V, R, S])
// For a EIP-2718 Transaction this returns RLP(TxType || TxPayload)
// For a EIP-2930 Transaction, TxType == 0x01 and TxPayload == RLP([ChainID, AccountNonce, GasPrice, GasLimit, Recipient, Amount, Data, AccessList, V, R, S]
func (tx *Transaction) EncodeRLP(w io.Writer) error {
if tx.Type() == LegacyTxType {
return rlp.Encode(w, tx.inner)
@ -103,9 +106,10 @@ func (tx *Transaction) encodeTyped(w *bytes.Buffer) error {
return rlp.Encode(w, tx.inner)
}
// MarshalBinary returns the canonical encoding of the transaction.
// For legacy transactions, it returns the RLP encoding. For EIP-2718 typed
// transactions, it returns the type and payload.
// MarshalBinary returns the canonical consensus encoding of the transaction.
// For a legacy Transaction this returns RLP([AccountNonce, GasPrice, GasLimit, Recipient, Amount, Data, V, R, S])
// For a EIP-2718 Transaction this returns TxType || TxPayload
// For a EIP-2930 Transaction, TxType == 0x01 and TxPayload == RLP([ChainID, AccountNonce, GasPrice, GasLimit, Recipient, Amount, Data, AccessList, V, R, S]
func (tx *Transaction) MarshalBinary() ([]byte, error) {
if tx.Type() == LegacyTxType {
return rlp.EncodeToBytes(tx.inner)