/// <summary>
/// Applies an internally generated contract funds transfer message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, ContractTransferMessage message)
{
bool enoughBalance = EnsureSenderHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance));
}
var gasMeter = new GasMeter(message.GasLimit);
// If it's not a contract, create a regular P2PKH tx
// If it is a contract, do a regular contract call
byte[] contractCode = state.ContractState.GetCode(message.To);
if (contractCode == null || contractCode.Length == 0)
{
gasMeter.Spend((Gas)GasPriceList.TransferCost);
// No contract at this address, create a regular P2PKH xfer
state.AddInternalTransfer(new TransferInfo(message.From, message.To, message.Amount));
return(StateTransitionResult.Ok(gasMeter.GasConsumed, message.To));
}
// For internal contract-contract transfers we need to add the value contained in the contract invocation transaction
// to the internal transfer list. This must occur before we apply the message to the state.
state.AddInternalTransfer(new TransferInfo(message.From, message.To, message.Amount));
gasMeter.Spend((Gas)GasPriceList.BaseCost);
StateTransitionResult result = ApplyCall(state, message, contractCode, gasMeter);
return(result);
}
/// <summary>
/// Applies an internally generated contract creation message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, InternalCreateMessage message)
{
bool enoughBalance = EnsureSenderHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance)); // Trivial - just return and let the MethodCall gas account for it.
}
var gasMeter = new GasMeter(message.GasLimit);
gasMeter.Spend((Gas)GasPriceList.CreateCost);
byte[] contractCode = state.ContractState.GetCode(message.From);
uint160 address = state.GenerateAddress(this.AddressGenerator);
// For internal creates we need to add the value contained in the contract invocation transaction
// to the internal transfer list. This must occur before we apply the message to the state.
// For external creates we do not need to do this.
state.AddInternalTransfer(new TransferInfo(message.From, address, message.Amount));
StateTransitionResult result = ApplyCreate(state, message.Parameters, contractCode, message, address, gasMeter, message.Type);
return(result);
}
/// <summary>
/// Applies an internally generated contract creation message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, InternalCreateMessage message)
{
bool enoughBalance = this.EnsureSenderHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance));
}
byte[] contractCode = state.ContractState.GetCode(message.From);
uint160 address = state.GenerateAddress(this.AddressGenerator);
// For internal creates we need to add the value contained in the contract invocation transaction
// to the internal transfer list. This must occur before we apply the message to the state.
// For external creates we do not need to do this.
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = address,
Value = message.Amount
});
StateTransitionResult result = this.ApplyCreate(state, message.Parameters, contractCode, message, address, message.Type);
return(result);
}
/// <summary>
/// Applies an internally generated contract method call message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, InternalCallMessage message)
{
bool enoughBalance = EnsureSenderHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance)); // Trivial - just return and let the MethodCall gas account for it.
}
var gasMeter = new GasMeter(message.GasLimit);
gasMeter.Spend((Gas)GasPriceList.BaseCost);
byte[] contractCode = state.ContractState.GetCode(message.To);
if (contractCode == null || contractCode.Length == 0)
{
return(StateTransitionResult.Fail(gasMeter.GasConsumed, StateTransitionErrorKind.NoCode));
}
// For internal calls we need to add the value contained in the contract invocation transaction
// to the internal transfer list. This must occur before we apply the message to the state.
// For external calls we do not need to do this.
state.AddInternalTransfer(new TransferInfo(message.From, message.To, message.Amount));
StateTransitionResult result = ApplyCall(state, message, contractCode, gasMeter);
return(result);
}
/// <summary>
/// Applies an internally generated contract method call message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, InternalCallMessage message)
{
bool enoughBalance = this.EnsureSenderHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance));
}
byte[] contractCode = state.ContractState.GetCode(message.To);
if (contractCode == null || contractCode.Length == 0)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.NoCode));
}
// For internal calls we need to add the value contained in the contract invocation transaction
// to the internal transfer list. This must occur before we apply the message to the state.
// For external calls we do not need to do this.
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = message.To,
Value = message.Amount
});
StateTransitionResult result = this.ApplyCall(state, message, contractCode);
return(result);
}
/// <summary>
/// Applies an internally generated contract creation message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, InternalCreateMessage message)
{
bool enoughBalance = this.EnsureContractHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance));
}
byte[] contractCode = state.ContractState.GetCode(message.From);
StateTransitionResult result = this.ApplyCreate(state, message.Parameters, contractCode, message, message.Type);
// For successful internal creates we need to add the transfer to the internal transfer list.
// For external creates we do not need to do this.
if (result.IsSuccess)
{
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = result.Success.ContractAddress,
Value = message.Amount
});
}
return(result);
}
/// <summary>
/// Applies an internally generated contract method call message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, InternalCallMessage message)
{
bool enoughBalance = this.EnsureContractHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance));
}
byte[] contractCode = state.ContractState.GetCode(message.To);
if (contractCode == null || contractCode.Length == 0)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.NoCode));
}
StateTransitionResult result = this.ApplyCall(state, message, contractCode);
// For successful internal calls we need to add the transfer to the internal transfer list.
// For external calls we do not need to do this.
if (result.IsSuccess)
{
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = message.To,
Value = message.Amount
});
}
return(result);
}
/// <summary>
/// Applies an internally generated contract funds transfer message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, ContractTransferMessage message)
{
bool enoughBalance = this.EnsureContractHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance));
}
// If it's not a contract, create a regular P2PKH tx
// If it is a contract, do a regular contract call
byte[] contractCode = state.ContractState.GetCode(message.To);
if (contractCode == null || contractCode.Length == 0)
{
// No contract at this address, create a regular P2PKH xfer
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = message.To,
Value = message.Amount
});
return(StateTransitionResult.Ok((Gas)0, message.To));
}
StateTransitionResult result = this.ApplyCall(state, message, contractCode);
// For successful internal contract-contract transfers we need to add the transfer to the internal transfer list.
if (result.IsSuccess)
{
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = message.To,
Value = message.Amount
});
}
return(result);
}
/// <summary>
/// Applies an internally generated contract funds transfer message to the current state.
/// </summary>
public StateTransitionResult Apply(IState state, ContractTransferMessage message)
{
bool enoughBalance = this.EnsureSenderHasEnoughBalance(state, message.From, message.Amount);
if (!enoughBalance)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientBalance));
}
// If it's not a contract, create a regular P2PKH tx
// If it is a contract, do a regular contract call
byte[] contractCode = state.ContractState.GetCode(message.To);
if (contractCode == null || contractCode.Length == 0)
{
// No contract at this address, create a regular P2PKH xfer
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = message.To,
Value = message.Amount
});
return(StateTransitionResult.Ok((Gas)0, message.To));
}
// For internal contract-contract transfers we need to add the value contained in the contract invocation transaction
// to the internal transfer list. This must occur before we apply the message to the state.
state.AddInternalTransfer(new TransferInfo
{
From = message.From,
To = message.To,
Value = message.Amount
});
StateTransitionResult result = this.ApplyCall(state, message, contractCode);
return(result);
}
