protected string GetCountTarget(Task taskElement)
{
if (taskElement.LoopCollection != null)
{
if (processConverter.Contract.TryGetProperty(taskElement.LoopCollection, out var property, out var entity))
{
if (!entity.IsRootEntity)
{
return(null); //TODO Exception
}
if (property.PropertyType == PropertyType.Collection)
{
return($"{property.Name.ToLowerCamelCase()}.length");
}
if (property.PropertyType == PropertyType.Dictionary)
{
return($"{ConversionTemplates.MappingKeysArrayName(property.Name.ToLowerCamelCase())}.length");
}
}
}
else if (taskElement.LoopCardinality != "0")
{
return(taskElement.LoopCardinality.ToString());
}
return(null); //TODO exception
}
public override void ConvertElementLogic()
{
processReturnFunction = CreateProcessReturnFunction();
mainFunction = new SolidityFunction(GetElementCallName(), SolidityVisibility.Internal);
mainFunction.AddParameters(processConverter.GetIdentifiersAsParameters());
var calledStartEventConverter = processConverter.ContractConverter.GetStartEventConverter(callActivity);
var callSubprocessStatement = calledStartEventConverter.GetStatementForPrevious(callActivity);
stateTracker = new SolidityStatement($"uint256 {ConversionTemplates.CallActivityCounter(GetElementCallName())}");
switch (callActivity.InstanceType)
{
case InstanceType.Single:
//Call the subprocess.
mainFunction.AddToBody(callSubprocessStatement);
break;
case InstanceType.Sequential:
//Call the subprocess and create a counter.
mainFunction.AddToBody(new SolidityStatement($"{ConversionTemplates.CallActivityCounter(GetElementCallName())} = 0"));
mainFunction.AddToBody(callSubprocessStatement);
break;
case InstanceType.Parallel:
//Call all of the subprocesses using an identifier, create a counter.
mainFunction.AddToBody(new SolidityStatement($"{ConversionTemplates.CallActivityCounter(GetElementCallName())} = 0"));
var solidityForLoop = new SolidityFor(GetLoopVariable(), GetCountTarget(callActivity));
solidityForLoop.AddToBody(callSubprocessStatement);
mainFunction.AddToBody(solidityForLoop);
break;
}
}
SolidityFunction CreateElementMainFunction()
{
SolidityFunction function = new SolidityFunction(GetElementCallName(), SolidityVisibility.Public);
function.AddModifier($"{ConversionTemplates.StateGuardModifierName(GetElementCallName())}({processConverter.GetIdentifierNames()})");
function.AddParameters(processConverter.GetIdentifiersAsParameters());
/*
* if (IsAddressGuardRequired())
* function.AddModifier($"{ConversionTemplates.AddressGuardModifierName(GetElementCallName())}({processConverter.GetIdentifierNames()})");
*/
boundaryEventCalls.ForEach(c => function.AddToBody(c));
function.AddToBody(new SolidityStatement(userTaskElement.ValidationScript, false));
if (userTaskElement.Form.Fields != null)
{
foreach (var field in userTaskElement.Form.Fields)
{
//TODO: throw exception if no property has been found
var propertyAndEntity = processConverter.GetPropertyAndEntity(field.PropertyExpression);
var property = propertyAndEntity.Item1;
var entity = propertyAndEntity.Item2;
var formPropertyDisplayName = Helpers.ToLowerCamelCase(field.DisplayName);
function.AddParameter(new SolidityParameter(Helpers.PropertyTypeToString(property, processConverter.ContractConverter), formPropertyDisplayName));
}
}
function.AddToBody(CreateCallNextBody());
return(function);
}
SolidityModifier CreateAddressGuard()
{
//Initialize the modifier using the generated name
SolidityModifier addressGuard = new SolidityModifier(ConversionTemplates.AddressGuardModifierName(GetElementCallName()));
addressGuard.AddParameters(processConverter.GetIdentifiersAsParameters());
//Address is force assigned
if (userTaskElement.Assignee.Address != null)
{
SolidityStatement requireStatement = new SolidityStatement($"require(msg.sender=={GetAssigneeAddress()})");
addressGuard.AddToBody(requireStatement);
}
//Address is not force assigned, it will be assigned to the first caller of the first task method containing this assignee
else if (userTaskElement.Assignee.Name != null)
{
var addressPosition = $"{ConverterConfig.ADDRESS_MAPPING_VAR_NAME}[\"{userTaskElement.Assignee.Name}\"]";
var ifElseBlock = new SolidityIfElse();
//Assigns the address, if address has not been been yet assigned to the assignee
ifElseBlock.AddConditionBlock($"{addressPosition} == address(0x0)", new SolidityStatement($"{addressPosition} = msg.sender"));
//Checks whether the sender has the required address
SolidityStatement requireStatement = new SolidityStatement($"require(msg.sender=={addressPosition})");
addressGuard.AddToBody(ifElseBlock);
addressGuard.AddToBody(requireStatement);
}
return(addressGuard);
}
SolidityFunction CreateElementMainFunction()
{
SolidityFunction function = new SolidityFunction(GetElementCallName(), SolidityVisibility.Public);
function.AddModifier($"{ConversionTemplates.StateGuardModifierName(GetElementCallName())}({processConverter.GetIdentifierNames()})");
function.AddParameters(processConverter.GetIdentifiersAsParameters());
/*
* if (IsAddressGuardRequired())
* function.AddModifier($"{ConversionTemplates.AddressGuardModifierName(GetElementCallName())}({processConverter.GetIdentifierNames()})");
*/
boundaryEventCalls.ForEach(c => function.AddToBody(c));
function.AddToBody(new SolidityStatement(userTaskElement.ValidationScript, false));
foreach (var fieldGroup in userTaskElement.Form.FieldGroups)
{
foreach (var field in fieldGroup.Fields)
{
//var property = processConverter.GetProperty(field.ParamBind);
var formPropertyDisplayName = Helpers.ToLowerCamelCase(field.Label);
function.AddParameter(new SolidityParameter(Helpers.FormFieldToDataType(field), formPropertyDisplayName));
}
}
function.AddToBody(CreateCallNextBody());
return(function);
}
string GetLoopVariable()
{
if (callActivity.LoopCollection != null || callActivity.LoopCardinality != "0")
{
return(ConversionTemplates.IdentifierVariableName(callActivity.Id));
}
return(null); //TODO exception
}
SolidityStatement CreateMultiInstanceCounterDefinition()
{
if (userTaskElement.LoopCardinality != 0 || userTaskElement.LoopCollection != null)
{
var variableName = ConversionTemplates.MultiInstanceCounterVariable(GetElementCallName());
return(new SolidityStatement($"uint256 {variableName}"));
}
return(null);
}
public override SolidityStatement GetStatementForPrevious(ProcessElement previous)
{
var statement = new SolidityStatement();
if (counterVariablePresent)
{
statement.Add(new SolidityStatement($"{ConversionTemplates.MultiInstanceCounterVariable(GetElementCallName())} = 0"));
}
statement.Add(GetChangeActiveStateStatement(true));
return(statement);
}
public override SolidityStatement GetStatementForPrevious(ProcessElement previous)
{
var statement = new SolidityStatement();
statement.Add(GetChangeActiveStateStatement(true));
//Call the return function of the parent call element, if it exists
if (processConverter.ParentProcessConverter != null)
{
var callActivityReturnName = ConversionTemplates.CallActivityReturnFunctionName(processConverter.GetParentCallActivityCallName());
statement.Add($"{callActivityReturnName}({processConverter.ParentProcessConverter.GetIdentifierNames()})");
}
return(statement);
}
SolidityFunction CreateTouchFunction(TaskConverter attachedToConverter)
{
var function = new SolidityFunction($"touch{GetElementCallName()}", SolidityVisibility.Public, "bool");
function.AddParameters(processConverter.GetIdentifiersAsParameters());
function.AddModifier($"{ConversionTemplates.StateGuardModifierName(attachedToConverter.GetElementCallName())}({processConverter.GetIdentifierNames()})");
var solidityCondition = new SolidityIfElse();
solidityCondition.AddConditionBlock($"now > {GetTimerCondition()}", CreateTouchFunctionLogic(attachedToConverter));
function.AddToBody(solidityCondition);
function.AddToBody(new SolidityStatement("return true"));
return(function);
}
SolidityModifier CreateStateGuard()
{
SolidityModifier stateGuard = new SolidityModifier(ConversionTemplates.StateGuardModifierName(GetElementCallName()));
stateGuard.AddParameters(processConverter.GetIdentifiersAsParameters());
var activeStateFunctionName = ConversionTemplates.ActiveStatesFunctionName(processConverter.Id);
var callParameters = processConverter.GetIdentifierNames();
if (callParameters.Length > 0)
{
callParameters += ",";
}
callParameters += $"\"{GetElementCallName()}\"";
SolidityStatement requireStatement = new SolidityStatement($"require({activeStateFunctionName}({callParameters}) == true)");
stateGuard.AddToBody(requireStatement);
return(stateGuard);
}
SolidityFunction CreateProcessReturnFunction()
{
var function = new SolidityFunction(ConversionTemplates.CallActivityReturnFunctionName(GetElementCallName()), SolidityVisibility.Internal);
function.AddParameters(processConverter.GetIdentifiersAsParameters());
var nextElementStatement = CreateNextElementStatement();
var incrementStatement = new SolidityStatement($"{ConversionTemplates.CallActivityCounter(GetElementCallName())}++");
var checkConditionBlock = new SolidityIfElse();
var calledStartEventConverter = processConverter.ContractConverter.GetStartEventConverter(callActivity);
var callSubprocessStatement = calledStartEventConverter.GetStatementForPrevious(callActivity);
checkConditionBlock.AddConditionBlock($"{ConversionTemplates.CallActivityCounter(GetElementCallName())} >= {GetCountTarget(callActivity)}",
nextElementStatement);
switch (callActivity.InstanceType)
{
case InstanceType.Single:
function.AddToBody(nextElementStatement);
break;
case InstanceType.Sequential:
//increment the counter, check if counter reached limit.
//If counter reached limit, then call the next element. If not, call the subprocess again.
function.AddToBody(incrementStatement);
checkConditionBlock.AddConditionBlock("", callSubprocessStatement);
function.AddToBody(checkConditionBlock);
break;
case InstanceType.Parallel:
//increment the counter, check if counter reached limit.
//If counter reached limit, then call the next element. If not, do nothing.
function.AddToBody(incrementStatement);
function.AddToBody(checkConditionBlock);
break;
}
return(function);
}
List <SolidityComponent> CreateCallNextBody()
{
var components = new List <SolidityComponent>();
var callNextStatement = GetChangeActiveStateStatement(false);
callNextStatement.Add(processConverter.GetStatementOfNextElement(userTaskElement));
if (userTaskElement.InstanceType != InstanceType.Single)
{
//The tasks will run until it gets interrupted by some boundary event
if (userTaskElement.LoopCardinality == -1 || (userTaskElement.LoopCardinality == 0 && userTaskElement.LoopCollection == null))
{
return(components);
}
var ifStatement = new SolidityIfElse();
var counterVariableName = ConversionTemplates.MultiInstanceCounterVariable(GetElementCallName());
components.Add(new SolidityStatement($"{counterVariableName}++"));
counterVariablePresent = true;
if (userTaskElement.LoopCardinality > 0)
{
ifStatement.AddConditionBlock($"{counterVariableName} >= {userTaskElement.LoopCardinality}", callNextStatement);
}
else if (userTaskElement.LoopCollection != null)
{
ifStatement.AddConditionBlock($"{counterVariableName} >= {GetCountTarget(userTaskElement)}", callNextStatement);
}
components.Add(ifStatement);
}
else
{
components.Add(callNextStatement);
}
return(components);
}