/// <summary>
/// Calls the function in contract, state modification is allowed.
/// </summary>
/// <param name="header">Header in which context the call is done.</param>
/// <param name="function">Function in contract that is being called.</param>
/// <param name="sender">Sender of the transaction - caller of the function.</param>
/// <param name="arguments">Arguments to the function.</param>
/// <returns>Deserialized return value of the <see cref="function"/> based on its definition.</returns>
protected object[] Call(BlockHeader header, AbiFunctionDescription function, Address sender, params object[] arguments)
{
var transaction = GenerateTransaction <SystemTransaction>(function, sender, arguments);
var result = Call(header, transaction);
var objects = AbiEncoder.Decode(function.GetReturnInfo(), result);
return(objects);
}
public UInt256?BlockGasLimit(BlockHeader parentHeader)
{
this.BlockActivationCheck(parentHeader);
var function = Definition.GetFunction(nameof(BlockGasLimit));
var bytes = Constant.CallRaw(parentHeader, function, Address.Zero);
return((bytes?.Length ?? 0) == 0 ? (UInt256?)null : (UInt256)AbiEncoder.Decode(function.GetReturnInfo(), bytes)[0]);
}
/// <summary>
/// Calls the function in contract, state modification is allowed.
/// </summary>
/// <param name="header">Header in which context the call is done.</param>
/// <param name="functionName"></param>
/// <param name="sender">Sender of the transaction - caller of the function.</param>
/// <param name="gasLimit">Gas limit for generated transaction.</param>
/// <param name="arguments">Arguments to the function.</param>
/// <returns>Deserialized return value of the <see cref="functionName"/> based on its definition.</returns>
protected object[] Call(BlockHeader header, string functionName, Address sender, long gasLimit, params object[] arguments)
{
var function = AbiDefinition.GetFunction(functionName);
var transaction = GenerateTransaction <SystemTransaction>(functionName, sender, gasLimit, header, arguments);
var result = Call(header, transaction);
var objects = AbiEncoder.Decode(function.GetReturnInfo(), result);
return(objects);
}
protected object[] DecodeData(AbiEncodingInfo abiEncodingInfo, byte[] data)
{
try
{
return(AbiEncoder.Decode(abiEncodingInfo, data));
}
catch (Exception e)
{
throw new AbiException($"Cannot decode return data for function {abiEncodingInfo.Signature} for contract {ContractAddress}.", e);
}
}
/// <summary>
/// Same as <see cref="Call(Nethermind.Core.BlockHeader,AbiFunctionDescription,Address,object[])"/> but returns false instead of throwing <see cref="AuRaException"/>.
/// </summary>
/// <param name="header">Header in which context the call is done.</param>
/// <param name="function">Function in contract that is being called.</param>
/// <param name="sender">Sender of the transaction - caller of the function.</param>
/// <param name="result">Deserialized return value of the <see cref="function"/> based on its definition.</param>
/// <param name="arguments">Arguments to the function.</param>
/// <returns>true if function was <see cref="StatusCode.Success"/> otherwise false.</returns>
protected bool TryCall(BlockHeader header, AbiFunctionDescription function, Address sender, out object[] result, params object[] arguments)
{
var transaction = GenerateTransaction <SystemTransaction>(function, sender, arguments);
if (TryCall(header, transaction, out var bytes))
{
result = AbiEncoder.Decode(function.GetReturnInfo(), bytes);
return(true);
}
result = null;
return(false);
}
/// <summary>
/// Same as <see cref="Call(Nethermind.Core.BlockHeader,AbiFunctionDescription,Address,object[])"/> but returns false instead of throwing <see cref="AbiException"/>.
/// </summary>
/// <param name="header">Header in which context the call is done.</param>
/// <param name="functionName"></param>
/// <param name="sender">Sender of the transaction - caller of the function.</param>
/// <param name="gasLimit">Gas limit for generated transaction.</param>
/// <param name="result">Deserialized return value of the <see cref="functionName"/> based on its definition.</param>
/// <param name="arguments">Arguments to the function.</param>
/// <returns>true if function was <see cref="StatusCode.Success"/> otherwise false.</returns>
protected bool TryCall(BlockHeader header, string functionName, Address sender, long gasLimit, out object[] result, params object[] arguments)
{
var function = AbiDefinition.GetFunction(functionName);
var transaction = GenerateTransaction <SystemTransaction>(functionName, sender, gasLimit, header, arguments);
if (TryCall(header, transaction, out var bytes))
{
result = AbiEncoder.Decode(function.GetReturnInfo(), bytes);
return(true);
}
result = null;
return(false);
}
public void Dynamic_array_of_dynamic_array_of_uint(AbiEncodingStyle encodingStyle)
{
AbiType type = new AbiArray(new AbiArray(AbiType.UInt256));
AbiSignature signature = new AbiSignature("abc", type);
BigInteger[] element = { 1, 2, 3 };
BigInteger[][] data = { element, element };
byte[] encoded = _abiEncoder.Encode(encodingStyle, signature, new object[] { data });
object[] arguments = _abiEncoder.Decode(encodingStyle, signature, encoded);
Assert.AreEqual(arguments[0], data);
}
protected object[] DecodeData(AbiEncodingInfo abiEncodingInfo, byte[] data) => AbiEncoder.Decode(abiEncodingInfo, data);
protected object[] DecodeReturnData(string functionName, byte[] data)
{
return(AbiEncoder.Decode(AbiDefinition.GetFunction(functionName).GetReturnInfo(), data));
}
