public override object Clone(PSMPath newContainingPath)
{
return(new ClassLiteralStep(newContainingPath)
{
ClassLiteralExpression = this.ClassLiteralExpression
});
}
public override object Clone(PSMPath newContainingPath)
{
return(new TuplePartStep(newContainingPath)
{
TupleExpresion = this.TupleExpresion, TuplePart = this.TuplePart
});
}
public override object Clone(PSMPath newContainingPath)
{
return(new PSMPathAttributeStep(newContainingPath)
{
Attribute = this.Attribute
});
}
public override object Clone(PSMPath newContainingPath)
{
return(new PSMPathVariableStep(newContainingPath)
{
VariableExp = this.VariableExp
});
}
public override object Clone(PSMPath newContainingPath)
{
return(new PSMPathAssociationStep(newContainingPath)
{
Association = this.Association, From = this.From, To = this.To, IsUp = this.IsUp
});
}
public override object Clone(PSMPath newContainingPath)
{
return(new TupleLiteralStep(newContainingPath)
{
TupleExpresion = this.TupleExpresion
});
}
public override object Clone(PSMPath newContainingPath)
{
return(new GeneralSubexpressionStep(newContainingPath)
{
OclExpression = this.OclExpression
});
}
public override object Clone(PSMPath newContainingPath)
{
return(new PSMEvolutionPrevStep(newContainingPath)
{
PSMAssociationMemberTargetVersion = this.PSMAssociationMemberTargetVersion,
PSMAssociationMemberSourceVersion = this.PSMAssociationMemberSourceVersion,
StepAssociationNewVersion = this.StepAssociationNewVersion,
StepAttributeNewVersion = this.StepAttributeNewVersion
});
}
public object Clone()
{
PSMPath clone = new PSMPath();
clone.Context = Context;
foreach (PSMPathStep navigationStep in Steps)
{
PSMPathStep stepClone = (PSMPathStep)navigationStep.Clone(clone);
clone.Steps.Add(stepClone);
}
return(clone);
}
private OclExpression CreateExpressionFromPath(PSMPath psmPath)
{
VariableExp startVarExp = new VariableExp(psmPath.StartingVariableExp.referredVariable);
OclExpression result = startVarExp;
Classifier sourceClassifier = startVarExp.Type;
foreach (PSMPathStep step in psmPath.Steps)
{
if (step is PSMPathVariableStep)
{
continue;
}
Property referredProperty;
if (step is PSMPathAssociationStep)
{
PSMPathAssociationStep pathAssociationStep = ((PSMPathAssociationStep)step);
referredProperty = sourceClassifier.LookupProperty(pathAssociationStep.Association.Name);
if (referredProperty == null)
{
if (pathAssociationStep.IsUp)
{
referredProperty = sourceClassifier.LookupProperty(PSMBridgeAssociation.PARENT_STEP);
}
else
{
referredProperty = sourceClassifier.LookupProperty(string.Format(PSMBridgeAssociation.CHILD_N_STEP,
pathAssociationStep.From.ChildPSMAssociations.IndexOf(pathAssociationStep.Association)));
}
}
}
else if (step is PSMPathAttributeStep)
{
referredProperty = sourceClassifier.LookupProperty(((PSMPathAttributeStep)step).Attribute.Name);
}
else
{
throw new NotImplementedException();
}
Property navigationSource = null;
OclExpression qualifier = null;
PropertyCallExp propertyCallExp = new PropertyCallExp(result, false, navigationSource, qualifier, referredProperty);
result = propertyCallExp;
if (step is PSMPathAssociationStep)
{
sourceClassifier = psmBridge.Find(((PSMPathAssociationStep)step).To);
}
// else => no other steps
}
return(result);
}
public static PSMPath BuildPSMPath(ClassLiteralExp classLiteral, IConstraintsContext constraintsContext, VariableNamer variableNamer, BuildPSMPathParams buildPsmPathParams)
{
PSMPath path = new PSMPath();
path.Context.ConstraintContext = constraintsContext;
path.Context.VariableNamer = variableNamer;
path.TupleLiteralToXPathCallback = buildPsmPathParams.TupleLiteralToXPathCallback;
path.ClassLiteralToXPathCallback = buildPsmPathParams.ClassLiteralToXPathCallback;
path.GenericExpressionToXPathCallback = buildPsmPathParams.GenericExpressionToXPathCallback;
ClassLiteralStep classLiteralStep = new ClassLiteralStep(path)
{
ClassLiteralExpression = classLiteral
};
path.Steps.Insert(0, classLiteralStep);
return(path);
}
public override OclExpression Visit(PropertyCallExp node)
{
PIMPath pimPath = PIMPathBuilder.BuildPIMPath(node);
#region failure check
if (!PathMappings.ContainsKey(pimPath) || PathMappings[pimPath].Count == 0)
{
isSuitable = false;
notConvertibleExpression = node;
throw new OclSubexpressionNotConvertible(notConvertibleExpression);
}
#endregion
PSMPath psmPath = PathMappings[pimPath].First();
OclExpression result = CreateExpressionFromPath(psmPath);
return(result);
}
public static PSMPath BuildPSMPath(VariableExp variableExp, IConstraintsContext constraintsContext, VariableNamer variableNamer, BuildPSMPathParams buildPsmPathParams)
{
PSMPath path = new PSMPath();
path.Context.ConstraintContext = constraintsContext;
path.Context.VariableNamer = variableNamer;
path.TupleLiteralToXPathCallback = buildPsmPathParams.TupleLiteralToXPathCallback;
path.GenericExpressionToXPathCallback = buildPsmPathParams.GenericExpressionToXPathCallback;
path.ClassLiteralToXPathCallback = buildPsmPathParams.ClassLiteralToXPathCallback;
PSMPathVariableStep pathVariableStep = new PSMPathVariableStep(path)
{
VariableExp = variableExp
};
if (string.IsNullOrEmpty(variableExp.referredVariable.Name))
{
variableExp.referredVariable.Name = path.Context.VariableNamer.GetName(variableExp.referredVariable.PropertyType);
}
path.Steps.Insert(0, pathVariableStep);
return(path);
}
private bool FindNavigationsForPIMNavigationRecursive(PIMPath pimPath, int stepIndex, PSMAssociationMember currentMember, PSMPath builtPath, bool canGoToParent, ref List <PSMPath> result, PSMAssociation associationUsedAlready)
{
if (stepIndex == pimPath.Steps.Count)
{
result.Add(builtPath);
return(true);
}
PIMPathStep currentStep = pimPath.Steps[stepIndex];
if (currentStep is PIMPathAssociationStep)
{
Debug.Assert(currentMember != null);
PIMPathAssociationStep nextStep = (PIMPathAssociationStep)currentStep;
List <PSMAssociationMember> candidates = currentMember.ChildPSMAssociations.Where(a => allowNonTree || !a.IsNonTreeAssociation).Select(a => a.Child).ToList();
/*
* we forbid non-tree associations for now,
* it certainly makes thinks easier and I am not sure
* whether it is really a restriction
*/
List <PSMAssociation> candidatesAssociations = currentMember.ChildPSMAssociations.Where(a => allowNonTree || !a.IsNonTreeAssociation).ToList();
PSMAssociationMember parent = currentMember.ParentAssociation != null ? currentMember.ParentAssociation.Parent : null;
if (parent != null && canGoToParent && !(parent is PSMSchemaClass))
{
bool candidateParent = true;
if (currentMember.ParentAssociation.Interpretation != null)
{
PIMAssociation interpretedAssociation = (PIMAssociation)currentMember.ParentAssociation.Interpretation;
PIMAssociationEnd interpretedEnd = currentMember.ParentAssociation.InterpretedAssociationEnd;
PIMAssociationEnd oppositeEnd = interpretedAssociation.PIMAssociationEnds.Single(e => e != interpretedEnd);
// upwards navigation on ends with upper cardinality > 1 breaks semantics of the expression
if (oppositeEnd.Upper > 1)
{
candidateParent = false;
}
}
if (candidateParent)
{
candidates.Add(parent);
candidatesAssociations.Add(currentMember.ParentAssociation);
}
}
bool found = false;
for (int index = 0; index < candidates.Count; index++)
{
PSMAssociationMember candidate = candidates[index];
PSMAssociation candidateAssociation = candidatesAssociations[index];
bool parentStep = candidate == parent && !candidateAssociation.IsNonTreeAssociation;
// forbid traversing the same association several times
if (associationUsedAlready == candidateAssociation)
{
continue;
}
int nextStepIndex = stepIndex;
bool interpretedClassSatisfies = candidateAssociation.Interpretation != null &&
candidate.DownCastSatisfies <PSMClass>(c => c.Interpretation == nextStep.Class);
if (candidate.Interpretation == null || interpretedClassSatisfies)
{
PSMPath nextBuiltPath = (PSMPath)builtPath.Clone();
nextBuiltPath.Steps.Add(new PSMPathAssociationStep(nextBuiltPath)
{
Association = candidateAssociation, To = candidate, From = currentMember,
IsUp = candidateAssociation.Parent == candidate
});
if (interpretedClassSatisfies)
{
nextStepIndex++;
}
found |= FindNavigationsForPIMNavigationRecursive(pimPath, nextStepIndex, candidate, nextBuiltPath,
canGoToParent && !parentStep, ref result, parentStep ? candidateAssociation : null);
}
}
return(found);
}
else if (currentStep is PIMPathVariableStep)
{
Debug.Assert(currentMember == null);
PIMPathVariableStep pathVariableStep = (PIMPathVariableStep)currentStep;
IEnumerable <PSMClass> candidates = TargetPSMSchema.PSMClasses.Where(c => c.Interpretation == pimPath.StartingClass);
if (!VariableClassMappings.ContainsKey(pathVariableStep.Variable))
{
return(false);
}
candidates = candidates.Intersect(VariableClassMappings[pathVariableStep.Variable]);
bool found = false;
List <PSMClass> eliminatedCandidates = new List <PSMClass>();
eliminatedCandidates.AddRange(VariableClassMappings[pathVariableStep.Variable].Except(candidates));
foreach (PSMClass candidate in candidates)
{
PSMBridgeClass startType = psmBridge.Find(candidate);
builtPath = new PSMPath();
VariableDeclaration vd;
if (!variableTranslations.ContainsKey(pathVariableStep.Variable))
{
vd = new VariableDeclaration(pathVariableStep.Variable.Name, startType, null);
variableTranslations[pathVariableStep.Variable] = vd;
}
else
{
vd = variableTranslations[pathVariableStep.Variable];
}
builtPath.Steps.Add(new PSMPathVariableStep(builtPath)
{
VariableExp = new VariableExp(vd)
});
bool candidateUsable = FindNavigationsForPIMNavigationRecursive(pimPath, stepIndex + 1, candidate, builtPath, true, ref result, null);
if (!candidateUsable)
{
eliminatedCandidates.Add(candidate);
}
found |= candidateUsable;
}
VariableClassMappings[pathVariableStep.Variable].RemoveAll(eliminatedCandidates.Contains);
if (PathMappings.ContainsKey(pimPath))
{
PathMappings[pimPath].RemoveAll(p => eliminatedCandidates.Contains(p.StartingClass));
}
return(found);
}
else if (currentStep is PIMPathAttributeStep)
{
PIMPathAttributeStep pathAttributeStep = (PIMPathAttributeStep)currentStep;
Debug.Assert(currentMember is PSMClass);
bool found = false;
foreach (PSMAttribute psmAttribute in ((PSMClass)currentMember).PSMAttributes)
{
if (psmAttribute.Interpretation == pathAttributeStep.Attribute)
{
PSMPath nextBuiltPath = (PSMPath)builtPath.Clone();
nextBuiltPath.Steps.Add(new PSMPathAttributeStep(nextBuiltPath)
{
Attribute = psmAttribute
});
result.Add(nextBuiltPath);
found |= true;
}
}
return(found);
}
else
{
throw new NotImplementedException();
}
}
protected PSMPathStep(PSMPath path)
{
Path = path;
}
public static PSMPath BuildPSMPath(PropertyCallExp node, IConstraintsContext constraintsContext, VariableNamer variableNamer, BuildPSMPathParams buildPsmPathParams)
{
PSMPath path = new PSMPath();
path.TupleLiteralToXPathCallback = buildPsmPathParams.TupleLiteralToXPathCallback;
path.GenericExpressionToXPathCallback = buildPsmPathParams.GenericExpressionToXPathCallback;
path.GetRelativeXPathEvolutionCallback = buildPsmPathParams.GetRelativeXPathEvolutionCallback;
path.Context.ConstraintContext = constraintsContext;
path.Context.VariableNamer = variableNamer;
OclExpression s;
if (buildPsmPathParams.Evolution && IsEvolutionPrevStep(node))
{
PSMEvolutionPrevStep prevStep = new PSMEvolutionPrevStep(path);
if (node.ReferredProperty is PSMBridgeAttribute)
{
prevStep.StepAttributeNewVersion = ((PSMBridgeAttribute)node.ReferredProperty).SourceAttribute;
}
else if (node.ReferredProperty is PSMBridgeAssociation)
{
prevStep.StepAssociationNewVersion = ((PSMBridgeAssociation)node.ReferredProperty).SourceAsscociation;
}
else
{
throw new InvalidOperationException();
}
PrevOperationTag tag = (PrevOperationTag)((OperationCallExp)node.Source).ReferredOperation.Tag;
prevStep.PSMAssociationMemberTargetVersion = (PSMAssociationMember)tag.TargetVersionClassifier.Tag;
prevStep.PSMAssociationMemberSourceVersion = (PSMAssociationMember)tag.SourceVersionClassifier.Tag;
path.Steps.Add(prevStep);
OclExpression prevSource = ((OperationCallExp)node.Source).Source;
if (prevSource is VariableExp && ((VariableExp)prevSource).referredVariable == constraintsContext.Self)
{
s = null;
}
else
{
s = prevSource;
}
}
else if (node.ReferredProperty is PSMBridgeAssociation)
{
s = node;
}
else if (node.Source is TupleLiteralExp)
{
TuplePartStep tuplePartStep = new TuplePartStep(path)
{
TupleExpresion = (TupleLiteralExp)node.Source
};
tuplePartStep.TuplePart = tuplePartStep.TupleExpresion.Parts[node.ReferredProperty.Name];
path.Steps.Add(tuplePartStep);
s = node.Source;
}
else
{
PSMAttribute a = (PSMAttribute)node.ReferredProperty.Tag;
PSMPathAttributeStep pathAttributeStep = new PSMPathAttributeStep(path)
{
Attribute = a
};
path.Steps.Add(pathAttributeStep);
s = node.Source;
}
while (s is PropertyCallExp)
{
PSMPathAssociationStep step = new PSMPathAssociationStep(path);
var sp = ((PropertyCallExp)s);
// HACK: WFJT turn class tag into association tag
PSMBridgeAssociation bridgeAssociation = (PSMBridgeAssociation)sp.ReferredProperty;
step.Association = bridgeAssociation.SourceAsscociation;
if (bridgeAssociation.Direction == PSMBridgeAssociation.AssociationDirection.Down)
{
step.From = bridgeAssociation.SourceAsscociation.Parent;
step.To = bridgeAssociation.SourceAsscociation.Child;
step.IsUp = false;
}
else
{
step.From = bridgeAssociation.SourceAsscociation.Child;
step.To = bridgeAssociation.SourceAsscociation.Parent;
step.IsUp = true;
}
path.Steps.Insert(0, step);
s = sp.Source;
}
if (s is VariableExp)
{
VariableExp variableExp = (VariableExp)s;
PSMPathVariableStep pathVariableStep = new PSMPathVariableStep(path)
{
VariableExp = variableExp
};
if (string.IsNullOrEmpty(variableExp.referredVariable.Name))
{
variableExp.referredVariable.Name =
path.Context.VariableNamer.GetName(variableExp.referredVariable.PropertyType);
}
path.Steps.Insert(0, pathVariableStep);
}
else if (s is TupleLiteralExp)
{
TupleLiteralExp tupleLiteralExp = (TupleLiteralExp)s;
TupleLiteralStep tupleLiteralStep = new TupleLiteralStep(path);
tupleLiteralStep.TupleExpresion = tupleLiteralExp;
path.Steps.Insert(0, tupleLiteralStep);
}
else if (node.Source is ClassLiteralExp)
{
ClassLiteralExp classLiteralExp = (ClassLiteralExp)s;
ClassLiteralStep tupleLiteralStep = new ClassLiteralStep(path);
tupleLiteralStep.ClassLiteralExpression = classLiteralExp;
path.Steps.Insert(0, tupleLiteralStep);
}
else if (s == null)
{
// do nothing
}
else
{
GeneralSubexpressionStep generalSubexpressionStep = new GeneralSubexpressionStep(path);
generalSubexpressionStep.OclExpression = s;
path.Steps.Insert(0, generalSubexpressionStep);
}
return(path);
}
public PSMPathVariableStep(PSMPath path) : base(path)
{
}
public PSMEvolutionPrevStep(PSMPath path) : base(path)
{
}
public PSMPathAttributeStep(PSMPath path) : base(path)
{
}
public PSMPathAssociationStep(PSMPath path) : base(path)
{
}
public TuplePartStep(PSMPath path) : base(path)
{
}
public abstract object Clone(PSMPath newContainingPath);
public GeneralSubexpressionStep(PSMPath path)
: base(path)
{
}
public TupleLiteralStep(PSMPath path) : base(path)
{
}
public ClassLiteralStep(PSMPath path)
: base(path)
{
}