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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.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.Path;
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.BaseFactory;
import org.eclipse.etrice.core.common.base.Import;
import org.eclipse.etrice.core.common.scoping.ModelLocatorUriResolver;
import org.eclipse.etrice.core.common.scoping.RelativeFileURIHandler;
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(optional = true) IResourceDescriptions resourceDescriptions; // world/workspace scope
public ModelLocatorUriResolver getUriResolver() {
return importUriResolver;
}
/**
* Returns elements from workspace.
*/
public Iterable<IEObjectDescription> findInWorskpace(QualifiedName fqn, boolean ignoreCase) {
return getWorkspaceDescriptions().getExportedObjects(EOBJECT, fqn, ignoreCase);
}
/**
* Returns elements from workspace.
*/
public IResourceDescriptions getWorkspaceDescriptions() {
if(resourceDescriptions != null) {
return resourceDescriptions;
}
throw new IllegalStateException("workspace resource descriptions not set or available");
}
/**
* 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 current visible/imported scope of given resource.
*/
public IGlobalScopeProvider getVisibleScopeProvider() {
return globalScope;
}
/**
* 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())) {
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());
}
public List<Import> createModelPathImports(String issueString, Resource resource, EClass type, boolean wildcard) {
final List<Import> result = new ArrayList<>();
IScope scope = getVisibleScope(resource, type);
scope.getAllElements().forEach((eObjDesc) -> {
if(eObjDesc.getName().getLastSegment().equalsIgnoreCase(issueString)) {
Import imp = BaseFactory.eINSTANCE.createImport();
imp.setImportedNamespace((wildcard) ? eObjDesc.getQualifiedName().skipLast(1) + ".*" : eObjDesc.getQualifiedName().toString());
result.add(imp);
}
});
return result;
}
public List<Import> createURIImports(String issueString, EClass type, URI baseURI) {
final List<Import> result = new ArrayList<>();
getWorkspaceDescriptions().getExportedObjectsByType(type).forEach((eObjDesc) -> {
if(eObjDesc.getName().getLastSegment().equalsIgnoreCase(issueString)) {
Import imp = BaseFactory.eINSTANCE.createImport();
imp.setImportedNamespace(eObjDesc.getQualifiedName().skipLast(1) + ".*");
imp.setImportURI(computeImportURIString(baseURI, eObjDesc.getEObjectURI()));
result.add(imp);
}
});
return result;
}
private String computeImportURIString(URI base, URI toImport) {
URI trimmedBase = base.trimQuery().trimFragment();
URI trimmedImport = toImport.trimQuery().trimFragment();
RelativeFileURIHandler fileHandler = new RelativeFileURIHandler();
fileHandler.setBaseURI(trimmedBase);
URI resolvedRelative= fileHandler.deresolve(trimmedImport);
// same project => relative
if(base.isPlatformResource() && toImport.isPlatformResource() && Objects.equals(base.segment(1), toImport.segment(1))) {
// check if exists
String baseLocation = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(base.trimSegments(1).toPlatformString(false))).getLocation().toFile().getAbsolutePath();
if(resolvedRelative.isRelative() && Files.exists(Paths.get(baseLocation, resolvedRelative.toString()))) {
return resolvedRelative.toString();
} else {
return trimmedImport.toString();
}
}
// both in workspace => platform resource
if(base.isPlatformResource() && toImport.isPlatformResource()) {
return trimmedImport.toString();
} else {
// else file
return resolvedRelative.toString();
}
}
}
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