protected Map<TemplateParameter, ParameterableElement> getIterationBindings(
Iteration candidateIteration) {
Type sourceType = this.sourceType;
if (!(sourceType instanceof CollectionType)
&& (candidateIteration.getOwningType() instanceof CollectionType)) {
sourceType = metaModelManager.getCollectionType("Set", sourceType); // Implicit oclAsSet()
}
if (!(sourceType instanceof CollectionType)) { // May be InvalidType
return null;
}
HashMap<TemplateParameter, ParameterableElement> bindings =
new HashMap<TemplateParameter, ParameterableElement>();
bindings.put(
candidateIteration.getOwningType().getOwnedTemplateSignature().getOwnedParameter().get(0),
((CollectionType) sourceType).getElementType());
PivotUtil.getAllTemplateParameterSubstitutions(bindings, sourceType);
TemplateSignature templateSignature = candidateIteration.getOwnedTemplateSignature();
if (templateSignature != null) {
List<TemplateParameter> templateParameters = templateSignature.getOwnedParameter();
int accIndex = 0;
for (NavigatingArgCS csArgument : csArguments) {
if (csArgument.getRole() == NavigationRole.ACCUMULATOR) {
if (accIndex < templateParameters.size()) {
Variable argument = PivotUtil.getPivot(Variable.class, csArgument);
Type argumentType = argument.getType();
TemplateParameter accParameter = templateParameters.get(accIndex);
bindings.put(accParameter, argumentType);
}
accIndex++;
}
}
}
return bindings;
}
public boolean matches(EnvironmentView environmentView, Type forType, EObject eObject) {
if (eObject instanceof Iteration) {
Iteration candidateIteration = (Iteration) eObject;
int iteratorCount = candidateIteration.getOwnedIterator().size();
if ((0 < iterators) && (iteratorCount != iterators)) {
return false;
}
int accumulatorCount = candidateIteration.getOwnedAccumulator().size();
if (accumulatorCount != accumulators) {
return false;
}
Map<TemplateParameter, ParameterableElement> bindings =
getIterationBindings(candidateIteration);
if (bindings != null) {
installBindings(environmentView, forType, eObject, bindings);
}
return true;
} else if (eObject instanceof Operation) {
if (iterators > 0) {
return false;
}
if (accumulators > 0) {
return false;
}
Operation candidateOperation = (Operation) eObject;
List<Parameter> candidateParameters = candidateOperation.getOwnedParameter();
if (expressions != candidateParameters.size()) {
return false;
}
Map<TemplateParameter, ParameterableElement> bindings =
getOperationBindings(candidateOperation);
for (int i = 0; i < expressions; i++) {
Parameter candidateParameter = candidateParameters.get(i);
NavigatingArgCS csExpression = csArguments.get(i);
OclExpression expression = PivotUtil.getPivot(OclExpression.class, csExpression);
if (expression == null) {
return false;
}
Type candidateType = metaModelManager.getTypeWithMultiplicity(candidateParameter);
if (candidateType instanceof SelfType) {
candidateType = candidateOperation.getOwningType();
}
Type expressionType = expression.getType();
expressionType =
PivotUtil.getBehavioralType(expressionType); // FIXME make this a general facility
if (!metaModelManager.conformsTo(expressionType, candidateType, bindings)) {
return false;
}
}
if (bindings != null) {
installBindings(environmentView, forType, eObject, bindings);
}
return true;
} else {
return false;
}
}