public Set<QualifiedName> getImportedNames(XtextResource resource) {
XPackage xPackage = getXPackage(resource);
String packageName = xPackage.getName();
List<String> implicitPackageImports = newArrayList(packageName, "java.lang");
Set<QualifiedName> importedNames = newLinkedHashSet();
Map<String, QualifiedName> implicitAliases = getImplicitAliases();
for (INode node : XcoreUtil.importableCrossReferences(xPackage)) {
CrossReference grammarElement = (CrossReference) node.getGrammarElement();
EObject container = grammarElement.eContainer();
if (container instanceof Assignment) {
String name = node.getText().trim();
if (name.endsWith("::")) {
name = name.substring(0, name.length() - 2);
}
QualifiedName actualQualifiedName = nameConverter.toQualifiedName(name);
Assignment assignment = (Assignment) container;
String feature = assignment.getFeature();
EObject semanticObject = NodeModelUtils.findActualSemanticObjectFor(node);
EStructuralFeature eStructuralFeature =
semanticObject.eClass().getEStructuralFeature(feature);
if (!eStructuralFeature.isMany()) {
EObject eCrossReference = (EObject) semanticObject.eGet(eStructuralFeature);
EObject eContainer = eCrossReference.eContainer();
if (eContainer != xPackage
&& !(eContainer instanceof XPackage
&& "xcore.lang".equals(((XPackage) eContainer).getName()))
&& !(eContainer instanceof GenPackage
&& packageName.equals(((GenPackage) eContainer).getQualifiedPackageName()))
&& !(eCrossReference instanceof JvmDeclaredType
&& implicitPackageImports.contains(
((JvmDeclaredType) eCrossReference).getPackageName()))) {
QualifiedName fullyQualifiedName = nameProvider.getFullyQualifiedName(eCrossReference);
if (fullyQualifiedName != null
&& !actualQualifiedName.equals(fullyQualifiedName)
&& !fullyQualifiedName.equals(implicitAliases.get(name))) {
importedNames.add(fullyQualifiedName);
}
}
} else {
throw new RuntimeException("Not expecting multi-valued cross references in these models");
}
} else {
throw new RuntimeException(
"Expecting all cross references to be part of an assignment in these models");
}
}
return importedNames;
}
