private StateTransitionResult ApplyCall(IState state, CallMessage message, byte[] contractCode)
{
var gasMeter = new GasMeter(message.GasLimit);
gasMeter.Spend((Gas)GasPriceList.BaseCost);
// This needs to happen after the base fee is charged, which is why it's in here.
// TODO - Remove this check. It isn't possible for the method name to be null.
if (message.Method.Name == null)
{
return(StateTransitionResult.Fail(gasMeter.GasConsumed, StateTransitionErrorKind.NoMethodName));
}
string type = state.ContractState.GetContractType(message.To);
ISmartContractState smartContractState = state.CreateSmartContractState(state, gasMeter, message.To, message, state.ContractState);
VmExecutionResult result = this.Vm.ExecuteMethod(smartContractState, message.Method, contractCode, type);
bool revert = !result.IsSuccess;
if (revert)
{
return(StateTransitionResult.Fail(
gasMeter.GasConsumed,
result.Error));
}
return(StateTransitionResult.Ok(
gasMeter.GasConsumed,
message.To,
result.Success.Result
));
}
private StateTransitionResult ApplyCall(CallMessage message, byte[] contractCode)
{
if (this.GasRemaining < message.GasLimit || this.GasRemaining < GasPriceList.BaseCost)
{
return(StateTransitionResult.Fail((Gas)0, StateTransitionErrorKind.InsufficientGas));
}
var gasMeter = new GasMeter(message.GasLimit);
gasMeter.Spend((Gas)GasPriceList.BaseCost);
if (message.Method.Name == null)
{
return(StateTransitionResult.Fail(gasMeter.GasConsumed, StateTransitionErrorKind.NoMethodName));
}
StateSnapshot stateSnapshot = this.TakeSnapshot();
IContractState state = this.CreateIntermediateState();
string type = state.GetContractType(message.To);
ISmartContractState smartContractState = this.CreateSmartContractState(gasMeter, message.To, message, state);
VmExecutionResult result = this.Vm.ExecuteMethod(smartContractState, message.Method, contractCode, type);
this.GasRemaining -= gasMeter.GasConsumed;
bool revert = result.ExecutionException != null;
if (revert)
{
this.Rollback(stateSnapshot);
return(StateTransitionResult.Fail(
gasMeter.GasConsumed,
result.ExecutionException));
}
state.Commit();
this.GasRemaining -= gasMeter.GasConsumed;
return(StateTransitionResult.Ok(
gasMeter.GasConsumed,
message.To,
result.Result
));
}
