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/*******************************************************************************
* Copyright (c) 2011 protos software gmbh (http://www.protos.de).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* CONTRIBUTORS:
* Juergen Haug (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.core.common.base.util;
import java.util.Iterator;
import java.util.List;
import java.util.Optional;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EcoreFactory;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.etrice.core.common.base.Import;
import org.eclipse.etrice.core.common.scoping.ModelLocatorUriResolver;
import org.eclipse.xtext.naming.IQualifiedNameConverter;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.resource.IResourceDescription;
import org.eclipse.xtext.resource.IResourceDescriptions;
import org.eclipse.xtext.resource.IResourceServiceProvider;
import org.eclipse.xtext.scoping.IGlobalScopeProvider;
import org.eclipse.xtext.scoping.IScope;
import com.google.common.base.Predicate;
import com.google.common.base.Predicates;
import com.google.common.collect.Lists;
import com.google.inject.Inject;
public class ImportHelpers {
private final static EClass EOBJECT = EcorePackage.eINSTANCE.getEObject();
@Inject IQualifiedNameConverter nameConverter;
@Inject ModelLocatorUriResolver importUriResolver;
@Inject IGlobalScopeProvider globalScope; // visible/imported scope
@Inject IResourceDescriptions resourceDescriptions; // world scope
public ModelLocatorUriResolver getUriResolver() {
return importUriResolver;
}
// /**
// * Returns elements from workspace.
// */
// public Iterable<IEObjectDescription> findInWorskpace(QualifiedName fqn) {
// return resourceDescriptions.getExportedObjects(EOBJECT, fqn, false);
// }
/**
* Returns current visible/imported scope of given resource.
*/
public IScope getVisibleScope(Resource context) {
return getVisibleScope(context, null);
}
/**
* Returns current visible/imported scope of given resource.
*/
public IScope getVisibleScope(Resource context, EClass type) {
EReference reference = EcoreFactory.eINSTANCE.createEReference();
reference.setEType((type != null) ? type : EOBJECT);
return globalScope.getScope(context, reference, Predicates.alwaysTrue());
}
/**
* Returns a list of imported target eObjects for an import or absent if import is not computable.
* The list contains either a single exact match (imported namespace && quickFixCandidateMatcher)
* or candidates only (imported namespace || quickFixCandidateMatcher) or is optional empty.
*/
public Optional<List<IEObjectDescription>> getImportedObjectsFor(Import imp, Predicate<IEObjectDescription> quickFixCandidateMatcher) {
QualifiedName importedFQN = toFQN(imp);
if (importedFQN == null)
return Optional.empty();
// check in BaseJavaValidator.checkImportURI
String uriString = importUriResolver.resolve(imp);
if (uriString == null)
return Optional.empty();
URI uri = URI.createURI(uriString);
Resource importedResource = null;
try {
if(imp.eResource().getResourceSet() instanceof ResourceSetImpl) {
ResourceSetImpl rs = (ResourceSetImpl) imp.eResource().getResourceSet();
importedResource = rs.getURIResourceMap().get(uri);
}
if(importedResource == null) {
importedResource = new ResourceSetImpl().getResource(uri, true);
}
} catch (RuntimeException re) {
return Optional.empty();
}
IResourceServiceProvider resourceServiceProvider = IResourceServiceProvider.Registry.INSTANCE.getResourceServiceProvider(uri);
if (importedResource == null || resourceServiceProvider == null)
return Optional.empty();
IResourceDescription.Manager manager = resourceServiceProvider.getResourceDescriptionManager();
IResourceDescription description = manager.getResourceDescription(importedResource);
List<IEObjectDescription> candidates = Lists.newArrayList();
if (description != null) {
Iterator<IEObjectDescription> iter = description.getExportedObjects().iterator();
while (iter.hasNext()) {
IEObjectDescription eObjDesc = iter.next();
if (importedFQN.equals(eObjDesc.getQualifiedName())) {
if (quickFixCandidateMatcher.apply(eObjDesc)) {
// exact match -> early quit
return Optional.of(Lists.newArrayList(eObjDesc));
}
candidates.add(eObjDesc);
} else if (quickFixCandidateMatcher.apply(eObjDesc)) {
candidates.add(eObjDesc);
}
}
}
return Optional.of(candidates);
}
public QualifiedName toFQN(String fqn) {
boolean isWildcard = false;
try {
QualifiedName orig = nameConverter.toQualifiedName(fqn);
isWildcard = orig.getLastSegment().equals("*");
return (isWildcard) ? orig.skipLast(1) : orig;
} catch(IllegalArgumentException e){
return null;
}
}
public QualifiedName toFQN(Import imp) {
return toFQN(imp.getImportedNamespace());
}
}
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