/**
* Tries to find a {@link DelayedReference#getQueryElement() foreach property init} on the delayed
* reference <code>ref</code>. Assuming that <code>ref</code> is a {@link
* DelayedReference.ReferenceType#TYPE_FOREACH_PREDICATE} reference, its {@link
* DelayedReference#getPredicateActionList() predicate list} (the list of when/as/mode clauses} is
* used to find the position/index of <code>activePredicateSemantic</code>. At this position, the
* {@link com.sap.furcas.metamodel.FURCAS.TCS.PredicateSemantic#getAs() template} to be used for
* production is looked up.
*
* <p>If either the reference doesn't have the property init set in its {@link
* DelayedReference#getQueryElement()}, <code>null</code> is returned. This will in particular be
* the case if the parser is not configured to produce text blocks.
*/
private Template getTemplateFromPredicateSemantic(
PredicateSemantic activePredicateSemantic, DelayedReference ref) {
int index = ref.getPredicateActionList().indexOf(activePredicateSemantic);
if (index >= 0 && ((ForeachPredicatePropertyInit) ref.getQueryElement()) != null) {
int i = 0;
for (com.sap.furcas.metamodel.FURCAS.TCS.PredicateSemantic predSem :
((ForeachPredicatePropertyInit) ref.getQueryElement()).getPredicateSemantic()) {
if (i++ == index) {
return predSem.getAs();
}
}
return null;
} else {
return null;
}
}
/**
* Finds the next {@link ForEachExecution} in the collection iterated by <code>
* foreachContextIterator</code> that is for the same {@link DelayedReference#getQueryElement()
* property init} as the <code>reference</code> and that is for the same {@link
* ForEachExecution#getSourceModelElement() source element} as the <code>reference</code>. If no
* such element is found, <code>null</code> is returned
*
* <p>Postcondition: if a non-<code>null</code> result is returned, the <code>
* foreachContextIterator</code> is at that element so that calling {@link Iterator#remove()}
* removes the element just returned
*
* @param foreachContextIterator must not be <code>null</code>
*/
private ForEachExecution getNextForeachContext(
Iterator<ForEachExecution> foreachContextIterator, DelayedReference reference) {
ForEachExecution result = null;
while (foreachContextIterator.hasNext() && result == null) {
ForEachExecution fec = foreachContextIterator.next();
if (fec.getForeachPedicatePropertyInit().equals(reference.getQueryElement())
&& reference.getModelElement().equals(fec.getSourceModelElement())) {
result = fec;
}
}
return result;
}
private ForEachExecution produceNewForEachContext(
DelayedReference reference, ForeachProductionResult producedResult) {
ForEachExecution newContext = TextblocksFactory.eINSTANCE.createForEachExecution();
newContext.setForeachPedicatePropertyInit(
(ForeachPredicatePropertyInit) reference.getQueryElement());
newContext.setSourceModelElement((EObject) reference.getModelElement());
newContext.setContextElement(
(EObject) producedResult.getForeachExpressionResultForWhichProduced());
newContext.setTemplateUsedForProduction(producedResult.getTemplateUsedForProduction());
newContext.setResultModelElement((EObject) reference.getRealValue());
return newContext;
}
