/// <summary>
/// We pay a big copy-paste tax to maintain ValueDecoders but we believe that the amount of allocations saved
/// make it worth it. To be reviewed periodically.
/// Question to Lukasz here -> would it be fine to always use ValueDecoderContext only?
/// I believe it cannot be done for the network items decoding and is only relevant for the DB loads.
/// </summary>
public AccessList?Decode(
ref Rlp.ValueDecoderContext decoderContext,
RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
if (decoderContext.IsNextItemNull())
{
decoderContext.ReadByte();
return(null);
}
int length = decoderContext.PeekNextRlpLength();
int check = decoderContext.Position + length;
decoderContext.SkipLength();
AccessListBuilder accessListBuilder = new();
while (decoderContext.Position < check)
{
decoderContext.SkipLength();
Address address = decoderContext.DecodeAddress();
if (address == null)
{
throw new RlpException("Invalid tx access list format - address is null");
}
accessListBuilder.AddAddress(address);
if (decoderContext.Position < check)
{
int storageCheck = decoderContext.Position + decoderContext.PeekNextRlpLength();
decoderContext.SkipLength();
while (decoderContext.Position < storageCheck)
{
UInt256 index = decoderContext.DecodeUInt256();
accessListBuilder.AddStorage(index);
}
}
}
if ((rlpBehaviors & RlpBehaviors.AllowExtraData) != RlpBehaviors.AllowExtraData)
{
decoderContext.Check(check);
}
return(accessListBuilder.ToAccessList());
}
public BlockHeader Decode(Rlp.ValueDecoderContext decoderContext, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
if (decoderContext.IsNextItemNull())
{
return(null);
}
var headerRlp = decoderContext.PeekNextItem();
int headerSequenceLength = decoderContext.ReadSequenceLength();
int headerCheck = decoderContext.Position + headerSequenceLength;
Keccak parentHash = decoderContext.DecodeKeccak();
Keccak ommersHash = decoderContext.DecodeKeccak();
Address beneficiary = decoderContext.DecodeAddress();
Keccak stateRoot = decoderContext.DecodeKeccak();
Keccak transactionsRoot = decoderContext.DecodeKeccak();
Keccak receiptsRoot = decoderContext.DecodeKeccak();
Bloom bloom = decoderContext.DecodeBloom();
UInt256 difficulty = decoderContext.DecodeUInt256();
UInt256 number = decoderContext.DecodeUInt256();
UInt256 gasLimit = decoderContext.DecodeUInt256();
UInt256 gasUsed = decoderContext.DecodeUInt256();
UInt256 timestamp = decoderContext.DecodeUInt256();
byte[] extraData = decoderContext.DecodeByteArray();
BlockHeader blockHeader = new BlockHeader(
parentHash,
ommersHash,
beneficiary,
difficulty,
(long)number,
(long)gasLimit,
timestamp,
extraData)
{
StateRoot = stateRoot,
TxRoot = transactionsRoot,
ReceiptsRoot = receiptsRoot,
Bloom = bloom,
GasUsed = (long)gasUsed,
Hash = Keccak.Compute(headerRlp)
};
if (decoderContext.PeekPrefixAndContentLength().ContentLength == Keccak.Size)
{
blockHeader.MixHash = decoderContext.DecodeKeccak();
blockHeader.Nonce = (ulong)decoderContext.DecodeUBigInt();
}
else
{
blockHeader.AuRaStep = (long)decoderContext.DecodeUInt256();
blockHeader.AuRaSignature = decoderContext.DecodeByteArray();
}
if ((rlpBehaviors & RlpBehaviors.AllowExtraData) != RlpBehaviors.AllowExtraData)
{
decoderContext.Check(headerCheck);
}
return(blockHeader);
}