private void SetBindings(QVTRelations.IRelation relation, QVTBase.IPattern pattern, EssentialOCL.CSharpOpaqueExpression cSharpOpaqueExpression, ExpressionSyntax parsedExpression)
{
ISet <string> extractedIdentifiers = CSharpParser.ExtractNonMethodIdentifiersFromExpression(parsedExpression);
foreach (string extractedIdentifier in extractedIdentifiers)
{
EssentialOCL.IVariable variable = ConstructVariable(relation, extractedIdentifier);
pattern?.BindsTo.Add(variable);
cSharpOpaqueExpression.BindsTo.Add(variable);
}
}
private QVTRelations.IRelationDomain ConstructPrimitiveRelationDomain(QVTRelations.IRelation relation, EnAr.Connector qvtTransformationLinkConnector, EnAr.Element domainObjectElement)
{
EssentialOCL.IVariable variable = ConstructVariable(relation, domainObjectElement);
QVTRelations.IRelationDomain relationDomain = new QVTRelations.RelationDomain
{
Name = qvtTransformationLinkConnector.Name, // a primitive domain is supposed not to have a name, but we use it for ordering
IsCheckable = true,
IsEnforceable = false,
//DefaultAssignment = null // TODO?
Rule = relation,
RootVariable = variable
};
relation.Variable.Add(variable);
return(relationDomain);
}
private EssentialOCL.IVariable ConstructVariable(QVTRelations.IRelation relation, string name, EMOF.IType type = null)
{
EssentialOCL.IVariable variable = relation.Variable.FirstOrDefault(v => v.Name == name);
if (variable == null)
{
variable = new EssentialOCL.Variable()
{
Name = name,
Type = type,
InitExpression = null, // Not taken into account
};
relation.Variable.Add(variable);
}
// If there was an existing variable, but with no type yet, we give it the input type
else if (variable.Type == null && type != null)
{
variable.Type = type;
}
return(variable);
}
private QVTTemplate.IObjectTemplateExp ConstructObjectTemplateExp(QVTRelations.IRelation relation, QVTRelations.IDomainPattern domainPattern, EnAr.Element objectElement, ISet <EnAr.Connector> visitedConnectors = null)
{
EssentialOCL.IVariable variable = null;
EMOF.IType type = emofImporter.ConstructTypeOfTyped(objectElement);
// TODO manage the not ?
if (objectElement.Name != "{not}")
{
variable = ConstructVariable(relation, objectElement);
domainPattern?.BindsTo.Add(variable);
}
QVTTemplate.IObjectTemplateExp objectTemplateExp = new QVTTemplate.ObjectTemplateExp()
{
BindsTo = variable,
ReferredClass = type as EMOF.IClass,
Where = null // TODO
};
objectTemplateExp.SetAntiTemplate(variable == null);
objectElementToObjectTemplate.Add(objectElement, objectTemplateExp);
foreach (RunStateField runStateField in EnArExplorer.GetRunState(objectElement))
{
ConstructPropertyTemplateItem(relation, domainPattern, objectTemplateExp, runStateField);
}
foreach (EnAr.Connector connector in explorer.GetConnectorsLinkedTo(objectElement).FindAll(c => c.Stereotype != "qvtTransformationLink"))
{
Tuple <EnAr.ConnectorEnd, EnAr.Element> linked = explorer.GetElementOppositeTo(objectElement, connector);
EnAr.ConnectorEnd connectorEnd = linked.Item1;
EnAr.Element linkedElement = linked.Item2;
//if (!string.IsNullOrWhiteSpace(connectorEnd.Role))
//{
ConstructPropertyTemplateItem(relation, domainPattern, objectTemplateExp, connector, connectorEnd, linkedElement, visitedConnectors);
//}
}
return(objectTemplateExp);
}
private QVTTemplate.IPropertyTemplateItem ConstructPropertyTemplateItem(QVTRelations.IRelation relation, QVTRelations.IDomainPattern domainPattern, QVTTemplate.IObjectTemplateExp objectTemplateExp, EnAr.Connector connector, EnAr.ConnectorEnd connectorEnd, EnAr.Element linkedElement, ISet <EnAr.Connector> visitedConnectors)
{
EssentialOCL.IOclExpression value;
EMOF.IType type;
QVTTemplate.IObjectTemplateExp targetObjectTemplateExp;
ISet <EnAr.Connector> realVisitedConnectors = visitedConnectors ?? new HashSet <EnAr.Connector>();
ISet <EnAr.Connector> realVisitedConnectorsPropagated = new HashSet <EnAr.Connector>(realVisitedConnectors);
realVisitedConnectorsPropagated.Add(connector);
// Case cycle among object templates: simple variable expression
if (objectElementToObjectTemplate.ContainsKey(linkedElement))
{
targetObjectTemplateExp = objectElementToObjectTemplate[linkedElement];
EssentialOCL.IVariable existingVariable = targetObjectTemplateExp.BindsTo;
value = new EssentialOCL.VariableExp()
{
ReferredVariable = existingVariable
};
type = existingVariable.Type;
}
// Case no cycle; recursive creation of object template
else
{
targetObjectTemplateExp = ConstructObjectTemplateExp(relation, domainPattern, linkedElement, realVisitedConnectorsPropagated);
value = targetObjectTemplateExp;
type = ((QVTTemplate.IObjectTemplateExp)value).BindsTo.Type;
}
EMOF.IProperty property = null;
// If the connector end has a role, we use it to find the corresponding EMOF property
if (!string.IsNullOrWhiteSpace(connectorEnd.Role))
{
property = objectTemplateExp.ReferredClass.GetAllInheritedAttributes().Single(p => p.Name == connectorEnd.Role);
}
// If the connector end has no role (due to the else)
// AND if we haven't visited the connector yet
// AND if the connector has no roles whatsoever, we try to guess the type
else if (!realVisitedConnectors.Contains(connector) && connector.ClientEnd.Role.IsNullOrEmpty() && connector.SupplierEnd.Role.IsNullOrEmpty())
{
IList <EMOF.IProperty> candidateProperties = objectTemplateExp.ReferredClass.GetAllInheritedAttributes().Where(p =>
(p.Type as EMOF.IClass)?.GetAllSubTypes().Contains(type) ?? p.Type == type).ToList();
if (candidateProperties.Count == 0)
{
throw new InvalidQVTRelationsModelException("Relation " + relation.Name
+ ", invalid property connector between " + objectTemplateExp.BindsTo.Name + " and " + targetObjectTemplateExp.BindsTo.Name
+ ", no possible property", connector);
}
if (candidateProperties.Count > 1)
{
throw new InvalidQVTRelationsModelException("Relation " + relation.Name
+ ", ambiguous property connector between " + objectTemplateExp.BindsTo.Name + " and " + targetObjectTemplateExp.BindsTo.Name
+ ", cannot choose a property between the following: [" + string.Join(";", candidateProperties.Select(p => p.Name)) + "]", connector);
}
property = candidateProperties.Single();
}
QVTTemplate.PropertyTemplateItem propertyTemplateItem = null;
if (property != null)
{
propertyTemplateItem = new QVTTemplate.PropertyTemplateItem()
{
ReferredProperty = property,
Value = value,
IsOpposite = false, // TODO?
ObjContainer = objectTemplateExp
};
}
return(propertyTemplateItem);
}
private EssentialOCL.IOclExpression ConstructOCLExpression(QVTRelations.IRelation relation, ExpressionSyntax parsedExpression, QVTBase.IPattern
pattern, EMOF.IType type = null)
{
// Case single identifier => OCL VariableExp
if (parsedExpression is IdentifierNameSyntax)
{
EssentialOCL.IVariable variable = ConstructVariable(relation, parsedExpression.ToString(), type);
pattern?.BindsTo.Add(variable);
return(new EssentialOCL.VariableExp()
{
ReferredVariable = variable
});
}
// Case method call => QVT RelationCallExp (if the relation exists) of function call (if the function exists)
if (parsedExpression is InvocationExpressionSyntax)
{
InvocationExpressionSyntax invocationExpressionSyntax = (InvocationExpressionSyntax)parsedExpression;
// We are only interested in direct calls
if (invocationExpressionSyntax.Expression is IdentifierNameSyntax)
{
IdentifierNameSyntax methodIdentifier = (IdentifierNameSyntax)invocationExpressionSyntax.Expression;
ArgumentListSyntax argumentList = invocationExpressionSyntax.ArgumentList;
QVTRelations.IRelation calledRelation = FindRelation((QVTRelations.IRelationalTransformation)(relation.Transformation), methodIdentifier.ToString());
QVTBase.IFunction calledFunction = FindFunction((QVTRelations.IRelationalTransformation)(relation.Transformation), methodIdentifier.ToString());
if (calledRelation != null)
{
QVTRelations.RelationCallExp call = new QVTRelations.RelationCallExp
{
ReferredRelation = calledRelation
};
if (argumentList.Arguments.Count != calledRelation.Domain.Count)
{
throw new InvalidQVTRelationsModelException("Relation " + relation.Name + ": wrong number of arguments in relation call " + calledRelation.Name);
}
foreach (ArgumentSyntax argumentSyntax in argumentList.Arguments)
{
QVTRelations.IRelationDomain correspondingDomain = (QVTRelations.IRelationDomain)calledRelation.Domain[argumentList.Arguments.IndexOf(argumentSyntax)];
ExpressionSyntax argumentExpression = argumentSyntax.Expression;
EssentialOCL.IOclExpression argumentOCLExpression = ConstructOCLExpression(relation, argumentExpression, pattern, correspondingDomain.RootVariable.Type);
call.Argument.Add(argumentOCLExpression);
}
return(call);
}
else if (calledFunction != null)
{
string methodname = methodIdentifier.ToString();
EssentialOCL.IOperationCallExp call = new EssentialOCL.OperationCallExp()
{
Type = calledFunction.Type,
ReferredOperation = calledFunction,
Name = calledFunction.Name,
};
foreach (ArgumentSyntax argumentSyntax in argumentList.Arguments)
{
ExpressionSyntax argumentExpression = argumentSyntax.Expression;
EssentialOCL.IOclExpression argumentOCLExpression = ConstructOCLExpression(relation, argumentExpression, pattern, calledFunction.Type);
call.Argument.Add(argumentOCLExpression);
}
return(call);
}
}
}
// Case assignment => Custom Assignment //TODO replace by OCL '=='? Meaning having to provide basic parts of OCL standard lib
if (parsedExpression is AssignmentExpressionSyntax)
{
AssignmentExpressionSyntax assignmentExpressionSyntax = (AssignmentExpressionSyntax)parsedExpression;
IdentifierNameSyntax leftIdentifier = (IdentifierNameSyntax)assignmentExpressionSyntax.Left;
ExpressionSyntax right = assignmentExpressionSyntax.Right;
EssentialOCL.IVariable variable = ConstructVariable(relation, leftIdentifier.ToString());
pattern?.BindsTo.Add(variable);
return(new EssentialOCL.Assignment()
{
AssignedVariable = variable,
Value = ConstructOCLExpression(relation, right, pattern)
});
}
// Any other case => Custom CSharpOpaqueExpression // TODO replace by QVT "Function" with a black box implementation?
EssentialOCL.CSharpOpaqueExpression cSharpOpaqueExpression = new EssentialOCL.CSharpOpaqueExpression()
{
Code = parsedExpression.ToString()
};
SetBindings(relation, pattern, cSharpOpaqueExpression, parsedExpression);
return(cSharpOpaqueExpression);
}
