/**
* Walks up the containment hierarchy to find an EObject that is able to hold (contain) the given
* object.
*/
protected EObject findHookParent(
EObject container,
EClass startClass,
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ContainedFeature currentLink,
EObject object) {
EClass containerClass = currentLink.getContainerClass();
while (container != null) {
if (containerClass.isInstance(object)) {
if (startClass.equals(container.eClass())) {
return container;
}
}
container = container.eContainer();
}
return null;
}
protected EObject findCorrectContainer(
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ExpectedTerminal expectedTerminal) {
EObject container = expectedTerminal.getContainer();
EClass ruleMetaclass = expectedTerminal.getTerminal().getRuleMetaclass();
if (ruleMetaclass.isInstance(container)) {
// container is correct for expected terminal
return container;
}
// the container is wrong
EObject parent = null;
EObject previousParent = null;
EObject correctContainer = null;
EObject hookableParent = null;
org.emftext.language.xpath3.resource.xpath3.grammar.Xpath3ContainmentTrace containmentTrace =
expectedTerminal.getContainmentTrace();
EClass startClass = containmentTrace.getStartClass();
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ContainedFeature currentLink = null;
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ContainedFeature previousLink = null;
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ContainedFeature[] containedFeatures =
containmentTrace.getPath();
for (int i = 0; i < containedFeatures.length; i++) {
currentLink = containedFeatures[i];
if (i > 0) {
previousLink = containedFeatures[i - 1];
}
EClass containerClass = currentLink.getContainerClass();
hookableParent = findHookParent(container, startClass, currentLink, parent);
if (hookableParent != null) {
// we found the correct parent
break;
} else {
previousParent = parent;
parent = containerClass.getEPackage().getEFactoryInstance().create(containerClass);
if (parent != null) {
if (previousParent == null) {
// replace container for expectedTerminal with correctContainer
correctContainer = parent;
} else {
// This assignment is only performed to get rid of a warning about a potential
// null pointer access. Variable 'previousLink' cannot be null here, because it is
// initialized for all loop iterations where 'i' is greather than 0 and for the
// case where 'i' equals zero, this path is never executed, because
// 'previousParent' is null in this case.
org.emftext.language.xpath3.resource.xpath3.mopp.Xpath3ContainedFeature link =
previousLink;
org.emftext.language.xpath3.resource.xpath3.util.Xpath3EObjectUtil.setFeature(
parent, link.getFeature(), previousParent, false);
}
}
}
}
if (correctContainer == null) {
correctContainer = container;
}
if (currentLink == null) {
return correctContainer;
}
hookableParent = findHookParent(container, startClass, currentLink, parent);
final EObject finalHookableParent = hookableParent;
final EStructuralFeature finalFeature = currentLink.getFeature();
final EObject finalParent = parent;
if (parent != null && hookableParent != null) {
expectedTerminal.setAttachmentCode(
new Runnable() {
public void run() {
org.emftext.language.xpath3.resource.xpath3.util.Xpath3EObjectUtil.setFeature(
finalHookableParent, finalFeature, finalParent, false);
}
});
}
return correctContainer;
}