private Transaction GetTransactionFromBlock(ApplicationEngine engine, byte[] blockIndexOrHash, int txIndex)
{
UInt256 hash;
if (blockIndexOrHash.Length < UInt256.Length)
{
hash = GetBlockHash(engine.Snapshot, (uint)new BigInteger(blockIndexOrHash));
}
else if (blockIndexOrHash.Length == UInt256.Length)
{
hash = new UInt256(blockIndexOrHash);
}
else
{
throw new ArgumentException(null, nameof(blockIndexOrHash));
}
if (hash is null)
{
return(null);
}
TrimmedBlock block = GetTrimmedBlock(engine.Snapshot, hash);
if (block is null || !IsTraceableBlock(engine.Snapshot, block.Index, engine.ProtocolSettings.MaxTraceableBlocks))
{
return(null);
}
if (txIndex < 0 || txIndex >= block.Hashes.Length)
{
throw new ArgumentOutOfRangeException(nameof(txIndex));
}
return(GetTransaction(engine.Snapshot, block.Hashes[txIndex]));
}
private TrimmedBlock GetBlock(ApplicationEngine engine, byte[] indexOrHash)
{
UInt256 hash;
if (indexOrHash.Length < UInt256.Length)
{
hash = GetBlockHash(engine.Snapshot, (uint)new BigInteger(indexOrHash));
}
else if (indexOrHash.Length == UInt256.Length)
{
hash = new UInt256(indexOrHash);
}
else
{
throw new ArgumentException(null, nameof(indexOrHash));
}
if (hash is null)
{
return(null);
}
TrimmedBlock block = GetTrimmedBlock(engine.Snapshot, hash);
if (block is null || !IsTraceableBlock(engine.Snapshot, block.Index, engine.ProtocolSettings.MaxTraceableBlocks))
{
return(null);
}
return(block);
}
/// <summary>
/// Gets a block with the specified hash.
/// </summary>
/// <param name="snapshot">The snapshot used to read data.</param>
/// <param name="hash">The hash of the block.</param>
/// <returns>The block with the specified hash.</returns>
public Block GetBlock(DataCache snapshot, UInt256 hash)
{
TrimmedBlock state = GetTrimmedBlock(snapshot, hash);
if (state is null)
{
return(null);
}
return(new Block
{
Header = state.Header,
Transactions = state.Hashes.Select(p => GetTransaction(snapshot, p)).ToArray()
});
}