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package org.eclipse.emf.ecore.xcore.resource;
import java.util.Collections;
import java.util.Iterator;
import org.eclipse.emf.codegen.ecore.genmodel.GenBase;
import org.eclipse.emf.codegen.ecore.genmodel.GenModel;
import org.eclipse.emf.codegen.ecore.genmodel.GenModelFactory;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EModelElement;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.ecore.xcore.XPackage;
import org.eclipse.emf.ecore.xcore.scoping.LazyCreationProxyUriConverter;
import org.eclipse.emf.ecore.xcore.util.XcoreEcoreBuilder;
import org.eclipse.emf.ecore.xcore.util.XcoreJvmInferrer;
import org.eclipse.xtext.common.types.JvmGenericType;
import org.eclipse.xtext.naming.IQualifiedNameProvider;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.parser.IParseResult;
import org.eclipse.xtext.util.Pair;
import org.eclipse.xtext.xbase.resource.XbaseResource;
import com.google.inject.Inject;
public class XcoreResource extends XbaseResource {
@Inject
private LazyCreationProxyUriConverter proxyConverter;
@Inject
private IQualifiedNameProvider nameProvider;
@Inject
private XcoreJvmInferrer jvmInferrer;
protected boolean fullyInitialized = false;
@Override
public EList<EObject> getContents() {
if (!isLoading && !isUpdating && !fullyInitialized) {
try {
eSetDeliver(false);
isLoading = true;
lateInitialize();
fullyInitialized = true;
} finally {
isLoading = false;
eSetDeliver(true);
}
}
return super.getContents();
}
@Override
protected void updateInternalState(IParseResult parseResult) {
EObject ePackage = null;
EList<EObject> contents = getContents();
int size = contents.size();
if (size > 1)
{
for (Iterator<EObject> i = contents.iterator(); i.hasNext(); )
{
EObject eObject = i.next();
if (eObject instanceof EPackage)
{
// Defer unloading until the GenModel is unloaded.
//
ePackage = eObject;
}
else if (eObject instanceof GenModel || eObject instanceof JvmGenericType)
{
unload(eObject);
if (ePackage != null)
{
unload(ePackage);
ePackage = null;
}
}
}
contents.clear();
}
fullyInitialized = false;
super.updateInternalState(parseResult);
}
protected void lateInitialize() {
if (getParseResult() != null && getParseResult().getRootASTElement() instanceof XPackage)
{
XPackage model = (XPackage) getParseResult().getRootASTElement();
XcoreEcoreBuilder xcoreEcoreBuilder = new XcoreEcoreBuilder();
EPackage ePackage = xcoreEcoreBuilder.getEPackage(model);
super.getContents().add(ePackage);
GenModel genModel = GenModelFactory.eINSTANCE.createGenModel();
genModel.initialize(Collections.singleton(ePackage));
super.getContents().add(genModel);
genModel.initialize();
for (Iterator<EObject> i = genModel.eAllContents(); i.hasNext(); )
{
EObject eObject = i.next();
if (eObject instanceof GenBase)
{
GenBase genBase = (GenBase)eObject;
EModelElement eModelElement = genBase.getEcoreModelElement();
if (eModelElement != null)
{
XcoreEcoreBuilder.map(eModelElement, (GenBase)eObject);
}
}
}
xcoreEcoreBuilder.link();
super.getContents().addAll(jvmInferrer.getDeclaredTypes(model));
getCache().clear(this);
}
}
@Override
public synchronized EObject getEObject(String uriFragment) {
Pair<EClass,QualifiedName> fragmentInfo = proxyConverter.decodeFragment(uriFragment);
if (fragmentInfo != null) {
return findEObject(fragmentInfo.getFirst(), fragmentInfo.getSecond());
} else {
return super.getEObject(uriFragment);
}
}
/**
* finds the EObject of the given type and the given {@link QualifiedName}.
*
* TODO optimize
*/
protected EObject findEObject(EClass clazz, QualifiedName name) {
TreeIterator<EObject> iterator = EcoreUtil.getAllContents(this, false);
while (iterator.hasNext()) {
EObject candidate = iterator.next();
if (clazz.isInstance(candidate)) {
QualifiedName qualifiedName = nameProvider.getFullyQualifiedName(candidate);
if (name.equals(qualifiedName))
return candidate;
}
}
return null;
}
}
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